The Tor Browser: media/libvpx/vp8/encoder/onyx

media/libvpx/vp8/encoder/onyx_if.c@b8a032363ba2 (annotated)

media/libvpx/vp8/encoder/onyx_if.c

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 #include "vpx_config.h"
 #include "./vpx_scale_rtcd.h"
 #include "vp8/common/onyxc_int.h"
 #include "vp8/common/blockd.h"
 #include "onyx_int.h"
 #include "vp8/common/systemdependent.h"
 #include "quantize.h"
 #include "vp8/common/alloccommon.h"
 #include "mcomp.h"
 #include "firstpass.h"
 #include "psnr.h"
 #include "vpx_scale/vpx_scale.h"
 #include "vp8/common/extend.h"
 #include "ratectrl.h"
 #include "vp8/common/quant_common.h"
 #include "segmentation.h"
 #if CONFIG_POSTPROC
 #include "vp8/common/postproc.h"
 #endif
 #include "vpx_mem/vpx_mem.h"
 #include "vp8/common/swapyv12buffer.h"
 #include "vp8/common/threading.h"
 #include "vpx_ports/vpx_timer.h"
 #if ARCH_ARM
 #include "vpx_ports/arm.h"
 #endif
 #if CONFIG_MULTI_RES_ENCODING
 #include "mr_dissim.h"
 #endif
 #include "encodeframe.h"
 #include <math.h>
 #include <stdio.h>
 #include <limits.h>
 #if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING
 extern int vp8_update_coef_context(VP8_COMP *cpi);
 extern void vp8_update_coef_probs(VP8_COMP *cpi);
 #endif
 extern void vp8cx_pick_filter_level_fast(YV12_BUFFER_CONFIG *sd, VP8_COMP *cpi);
 extern void vp8cx_set_alt_lf_level(VP8_COMP *cpi, int filt_val);
 extern void vp8cx_pick_filter_level(YV12_BUFFER_CONFIG *sd, VP8_COMP *cpi);
 extern void vp8_deblock_frame(YV12_BUFFER_CONFIG *source, YV12_BUFFER_CONFIG *post, int filt_lvl, int low_var_thresh, int flag);
 extern void print_parms(VP8_CONFIG *ocf, char *filenam);
 extern unsigned int vp8_get_processor_freq();
 extern void print_tree_update_probs();
 extern int vp8cx_create_encoder_threads(VP8_COMP *cpi);
 extern void vp8cx_remove_encoder_threads(VP8_COMP *cpi);
 int vp8_estimate_entropy_savings(VP8_COMP *cpi);
 int vp8_calc_ss_err(YV12_BUFFER_CONFIG *source, YV12_BUFFER_CONFIG *dest);
 extern void vp8_temporal_filter_prepare_c(VP8_COMP *cpi, int distance);
 static void set_default_lf_deltas(VP8_COMP *cpi);
 extern const int vp8_gf_interval_table[101];
 #if CONFIG_INTERNAL_STATS
 #include "math.h"
 extern double vp8_calc_ssim
 (
     YV12_BUFFER_CONFIG *source,
     YV12_BUFFER_CONFIG *dest,
     int lumamask,
     double *weight
 );
 extern double vp8_calc_ssimg
 (
     YV12_BUFFER_CONFIG *source,
     YV12_BUFFER_CONFIG *dest,
     double *ssim_y,
     double *ssim_u,
     double *ssim_v
 );
 #endif
 #ifdef OUTPUT_YUV_SRC
 FILE *yuv_file;
 #endif
 #if 0
 FILE *framepsnr;
 FILE *kf_list;
 FILE *keyfile;
 #endif
 #if 0
 extern int skip_true_count;
 extern int skip_false_count;
 #endif
 #ifdef VP8_ENTROPY_STATS
 extern int intra_mode_stats[10][10][10];
 #endif
 #ifdef SPEEDSTATS
 unsigned int frames_at_speed[16] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
 unsigned int tot_pm = 0;
 unsigned int cnt_pm = 0;
 unsigned int tot_ef = 0;
 unsigned int cnt_ef = 0;
 #endif
 #ifdef MODE_STATS
 extern unsigned __int64 Sectionbits[50];
 extern int y_modes[5]  ;
 extern int uv_modes[4] ;
 extern int b_modes[10]  ;
 extern int inter_y_modes[10] ;
 extern int inter_uv_modes[4] ;
 extern unsigned int inter_b_modes[15];
 #endif
 extern const int vp8_bits_per_mb[2][QINDEX_RANGE];
 extern const int qrounding_factors[129];
 extern const int qzbin_factors[129];
 extern void vp8cx_init_quantizer(VP8_COMP *cpi);
 extern const int vp8cx_base_skip_false_prob[128];
 /* Tables relating active max Q to active min Q */
 static const unsigned char kf_low_motion_minq[QINDEX_RANGE] =
 {
 ,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 ,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 ,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 ,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2,
 ,3,3,3,3,3,4,4,4,5,5,5,5,5,6,6,
 ,6,7,7,8,8,8,8,9,9,10,10,10,10,11,11,
 ,11,12,12,13,13,13,13,14,14,15,15,15,15,16,16,
 ,16,17,17,18,18,18,18,19,20,20,21,21,22,23,23
 };
 static const unsigned char kf_high_motion_minq[QINDEX_RANGE] =
 {
 ,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 ,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 ,1,1,1,1,1,1,1,2,2,2,2,3,3,3,3,
 ,3,3,3,4,4,4,4,5,5,5,5,5,5,6,6,
 ,6,7,7,8,8,8,8,9,9,10,10,10,10,11,11,
 ,11,12,12,13,13,13,13,14,14,15,15,15,15,16,16,
 ,16,17,17,18,18,18,18,19,19,20,20,20,20,21,21,
 ,21,22,22,23,23,24,25,25,26,26,27,28,28,29,30
 };
 static const unsigned char gf_low_motion_minq[QINDEX_RANGE] =
 {
 ,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2,
 ,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,
 ,7,7,7,8,8,8,8,9,9,9,9,10,10,10,10,
 ,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,
 ,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,
 ,27,28,28,29,29,30,30,31,31,32,32,33,33,34,34,
 ,35,36,36,37,37,38,38,39,39,40,40,41,41,42,42,
 ,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58
 };
 static const unsigned char gf_mid_motion_minq[QINDEX_RANGE] =
 {
 ,0,0,0,1,1,1,1,1,1,2,2,3,3,3,4,
 ,4,5,5,5,6,6,6,7,7,7,8,8,8,9,9,
 ,10,10,10,10,11,11,11,12,12,12,12,13,13,13,14,
 ,14,15,15,16,16,17,17,18,18,19,19,20,20,21,21,
 ,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,
 ,30,31,31,32,32,33,33,34,34,35,35,36,36,37,37,
 ,39,39,40,40,41,41,42,42,43,43,44,45,46,47,48,
 ,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64
 };
 static const unsigned char gf_high_motion_minq[QINDEX_RANGE] =
 {
 ,0,0,0,1,1,1,1,1,2,2,2,3,3,3,4,
 ,4,5,5,5,6,6,6,7,7,7,8,8,8,9,9,
 ,10,10,10,11,11,12,12,13,13,14,14,15,15,16,16,
 ,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,
 ,25,26,26,27,27,28,28,29,29,30,30,31,31,32,32,
 ,33,34,34,35,35,36,36,37,37,38,38,39,39,40,40,
 ,41,42,42,43,44,45,46,47,48,49,50,51,52,53,54,
 ,56,57,58,59,60,62,64,66,68,70,72,74,76,78,80
 };
 static const unsigned char inter_minq[QINDEX_RANGE] =
 {
 ,0,1,1,2,3,3,4,4,5,6,6,7,8,8,9,
 ,10,11,11,12,13,13,14,15,15,16,17,17,18,19,20,
 ,21,22,22,23,24,24,25,26,27,27,28,29,30,30,31,
 ,33,33,34,35,36,36,37,38,39,39,40,41,42,42,43,
 ,45,46,46,47,48,49,50,50,51,52,53,54,55,55,56,
 ,58,59,60,60,61,62,63,64,65,66,67,67,68,69,70,
 ,72,73,74,75,75,76,77,78,79,80,81,82,83,84,85,
 ,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100
 };
 #ifdef PACKET_TESTING
 extern FILE *vpxlogc;
 #endif
 static void save_layer_context(VP8_COMP *cpi)
 {
     LAYER_CONTEXT *lc = &cpi->layer_context[cpi->current_layer];
     /* Save layer dependent coding state */
     lc->target_bandwidth                 = cpi->target_bandwidth;
     lc->starting_buffer_level            = cpi->oxcf.starting_buffer_level;
     lc->optimal_buffer_level             = cpi->oxcf.optimal_buffer_level;
     lc->maximum_buffer_size              = cpi->oxcf.maximum_buffer_size;
     lc->starting_buffer_level_in_ms      = cpi->oxcf.starting_buffer_level_in_ms;
     lc->optimal_buffer_level_in_ms       = cpi->oxcf.optimal_buffer_level_in_ms;
     lc->maximum_buffer_size_in_ms        = cpi->oxcf.maximum_buffer_size_in_ms;
     lc->buffer_level                     = cpi->buffer_level;
     lc->bits_off_target                  = cpi->bits_off_target;
     lc->total_actual_bits                = cpi->total_actual_bits;
     lc->worst_quality                    = cpi->worst_quality;
     lc->active_worst_quality             = cpi->active_worst_quality;
     lc->best_quality                     = cpi->best_quality;
     lc->active_best_quality              = cpi->active_best_quality;
     lc->ni_av_qi                         = cpi->ni_av_qi;
     lc->ni_tot_qi                        = cpi->ni_tot_qi;
     lc->ni_frames                        = cpi->ni_frames;
     lc->avg_frame_qindex                 = cpi->avg_frame_qindex;
     lc->rate_correction_factor           = cpi->rate_correction_factor;
     lc->key_frame_rate_correction_factor = cpi->key_frame_rate_correction_factor;
     lc->gf_rate_correction_factor        = cpi->gf_rate_correction_factor;
     lc->zbin_over_quant                  = cpi->mb.zbin_over_quant;
     lc->inter_frame_target               = cpi->inter_frame_target;
     lc->total_byte_count                 = cpi->total_byte_count;
     lc->filter_level                     = cpi->common.filter_level;
     lc->last_frame_percent_intra         = cpi->last_frame_percent_intra;
     memcpy (lc->count_mb_ref_frame_usage,
             cpi->mb.count_mb_ref_frame_usage,
             sizeof(cpi->mb.count_mb_ref_frame_usage));
 }
 static void restore_layer_context(VP8_COMP *cpi, const int layer)
 {
     LAYER_CONTEXT *lc = &cpi->layer_context[layer];
     /* Restore layer dependent coding state */
     cpi->current_layer                    = layer;
     cpi->target_bandwidth                 = lc->target_bandwidth;
     cpi->oxcf.target_bandwidth            = lc->target_bandwidth;
     cpi->oxcf.starting_buffer_level       = lc->starting_buffer_level;
     cpi->oxcf.optimal_buffer_level        = lc->optimal_buffer_level;
     cpi->oxcf.maximum_buffer_size         = lc->maximum_buffer_size;
     cpi->oxcf.starting_buffer_level_in_ms = lc->starting_buffer_level_in_ms;
     cpi->oxcf.optimal_buffer_level_in_ms  = lc->optimal_buffer_level_in_ms;
     cpi->oxcf.maximum_buffer_size_in_ms   = lc->maximum_buffer_size_in_ms;
     cpi->buffer_level                     = lc->buffer_level;
     cpi->bits_off_target                  = lc->bits_off_target;
     cpi->total_actual_bits                = lc->total_actual_bits;
     cpi->active_worst_quality             = lc->active_worst_quality;
     cpi->active_best_quality              = lc->active_best_quality;
     cpi->ni_av_qi                         = lc->ni_av_qi;
     cpi->ni_tot_qi                        = lc->ni_tot_qi;
     cpi->ni_frames                        = lc->ni_frames;
     cpi->avg_frame_qindex                 = lc->avg_frame_qindex;
     cpi->rate_correction_factor           = lc->rate_correction_factor;
     cpi->key_frame_rate_correction_factor = lc->key_frame_rate_correction_factor;
     cpi->gf_rate_correction_factor        = lc->gf_rate_correction_factor;
     cpi->mb.zbin_over_quant                  = lc->zbin_over_quant;
     cpi->inter_frame_target               = lc->inter_frame_target;
     cpi->total_byte_count                 = lc->total_byte_count;
     cpi->common.filter_level              = lc->filter_level;
     cpi->last_frame_percent_intra         = lc->last_frame_percent_intra;
     memcpy (cpi->mb.count_mb_ref_frame_usage,
             lc->count_mb_ref_frame_usage,
             sizeof(cpi->mb.count_mb_ref_frame_usage));
 }
 static int rescale(int val, int num, int denom)
 {
     int64_t llnum = num;
     int64_t llden = denom;
     int64_t llval = val;
     return (int)(llval * llnum / llden);
 }
 static void init_temporal_layer_context(VP8_COMP *cpi,
                                         VP8_CONFIG *oxcf,
                                         const int layer,
                                         double prev_layer_framerate)
 {
     LAYER_CONTEXT *lc = &cpi->layer_context[layer];
     lc->framerate = cpi->output_framerate / cpi->oxcf.rate_decimator[layer];
     lc->target_bandwidth = cpi->oxcf.target_bitrate[layer] * 1000;
     lc->starting_buffer_level_in_ms = oxcf->starting_buffer_level;
     lc->optimal_buffer_level_in_ms  = oxcf->optimal_buffer_level;
     lc->maximum_buffer_size_in_ms   = oxcf->maximum_buffer_size;
     lc->starting_buffer_level =
         rescale((int)(oxcf->starting_buffer_level),
                 lc->target_bandwidth, 1000);
     if (oxcf->optimal_buffer_level == 0)
       lc->optimal_buffer_level = lc->target_bandwidth / 8;
     else
       lc->optimal_buffer_level =
           rescale((int)(oxcf->optimal_buffer_level),
                   lc->target_bandwidth, 1000);
     if (oxcf->maximum_buffer_size == 0)
       lc->maximum_buffer_size = lc->target_bandwidth / 8;
     else
       lc->maximum_buffer_size =
           rescale((int)(oxcf->maximum_buffer_size),
                   lc->target_bandwidth, 1000);
     /* Work out the average size of a frame within this layer */
     if (layer > 0)
       lc->avg_frame_size_for_layer =
           (int)((cpi->oxcf.target_bitrate[layer] -
                 cpi->oxcf.target_bitrate[layer-1]) * 1000 /
                 (lc->framerate - prev_layer_framerate));
      lc->active_worst_quality         = cpi->oxcf.worst_allowed_q;
      lc->active_best_quality          = cpi->oxcf.best_allowed_q;
      lc->avg_frame_qindex             = cpi->oxcf.worst_allowed_q;
      lc->buffer_level                 = lc->starting_buffer_level;
      lc->bits_off_target              = lc->starting_buffer_level;
      lc->total_actual_bits                 = 0;
      lc->ni_av_qi                          = 0;
      lc->ni_tot_qi                         = 0;
      lc->ni_frames                         = 0;
      lc->rate_correction_factor            = 1.0;
      lc->key_frame_rate_correction_factor  = 1.0;
      lc->gf_rate_correction_factor         = 1.0;
      lc->inter_frame_target                = 0;
 }
 // Upon a run-time change in temporal layers, reset the layer context parameters
 // for any "new" layers. For "existing" layers, let them inherit the parameters
 // from the previous layer state (at the same layer #). In future we may want
 // to better map the previous layer state(s) to the "new" ones.
 static void reset_temporal_layer_change(VP8_COMP *cpi,
                                         VP8_CONFIG *oxcf,
                                         const int prev_num_layers)
 {
     int i;
     double prev_layer_framerate = 0;
     const int curr_num_layers = cpi->oxcf.number_of_layers;
     // If the previous state was 1 layer, get current layer context from cpi.
     // We need this to set the layer context for the new layers below.
     if (prev_num_layers == 1)
     {
         cpi->current_layer = 0;
         save_layer_context(cpi);
     }
     for (i = 0; i < curr_num_layers; i++)
     {
         LAYER_CONTEXT *lc = &cpi->layer_context[i];
         if (i >= prev_num_layers)
         {
            init_temporal_layer_context(cpi, oxcf, i, prev_layer_framerate);
         }
         // The initial buffer levels are set based on their starting levels.
         // We could set the buffer levels based on the previous state (normalized
         // properly by the layer bandwidths) but we would need to keep track of
         // the previous set of layer bandwidths (i.e., target_bitrate[i])
         // before the layer change. For now, reset to the starting levels.
         lc->buffer_level = cpi->oxcf.starting_buffer_level_in_ms *
                            cpi->oxcf.target_bitrate[i];
         lc->bits_off_target = lc->buffer_level;
         // TDOD(marpan): Should we set the rate_correction_factor and
         // active_worst/best_quality to values derived from the previous layer
         // state (to smooth-out quality dips/rate fluctuation at transition)?
         // We need to treat the 1 layer case separately: oxcf.target_bitrate[i]
         // is not set for 1 layer, and the restore_layer_context/save_context()
         // are not called in the encoding loop, so we need to call it here to
         // pass the layer context state to |cpi|.
         if (curr_num_layers == 1)
         {
             lc->target_bandwidth = cpi->oxcf.target_bandwidth;
             lc->buffer_level = cpi->oxcf.starting_buffer_level_in_ms *
                                lc->target_bandwidth  / 1000;
             lc->bits_off_target = lc->buffer_level;
             restore_layer_context(cpi, 0);
         }
         prev_layer_framerate = cpi->output_framerate /
                                cpi->oxcf.rate_decimator[i];
     }
 }
 static void setup_features(VP8_COMP *cpi)
 {
     // If segmentation enabled set the update flags
     if ( cpi->mb.e_mbd.segmentation_enabled )
     {
         cpi->mb.e_mbd.update_mb_segmentation_map = 1;
         cpi->mb.e_mbd.update_mb_segmentation_data = 1;
     }
     else
     {
         cpi->mb.e_mbd.update_mb_segmentation_map = 0;
         cpi->mb.e_mbd.update_mb_segmentation_data = 0;
     }
     cpi->mb.e_mbd.mode_ref_lf_delta_enabled = 0;
     cpi->mb.e_mbd.mode_ref_lf_delta_update = 0;
     vpx_memset(cpi->mb.e_mbd.ref_lf_deltas, 0, sizeof(cpi->mb.e_mbd.ref_lf_deltas));
     vpx_memset(cpi->mb.e_mbd.mode_lf_deltas, 0, sizeof(cpi->mb.e_mbd.mode_lf_deltas));
     vpx_memset(cpi->mb.e_mbd.last_ref_lf_deltas, 0, sizeof(cpi->mb.e_mbd.ref_lf_deltas));
     vpx_memset(cpi->mb.e_mbd.last_mode_lf_deltas, 0, sizeof(cpi->mb.e_mbd.mode_lf_deltas));
     set_default_lf_deltas(cpi);
 }
 static void dealloc_raw_frame_buffers(VP8_COMP *cpi);
 static void dealloc_compressor_data(VP8_COMP *cpi)
 {
     vpx_free(cpi->tplist);
     cpi->tplist = NULL;
     /* Delete last frame MV storage buffers */
     vpx_free(cpi->lfmv);
     cpi->lfmv = 0;
     vpx_free(cpi->lf_ref_frame_sign_bias);
     cpi->lf_ref_frame_sign_bias = 0;
     vpx_free(cpi->lf_ref_frame);
     cpi->lf_ref_frame = 0;
     /* Delete sementation map */
     vpx_free(cpi->segmentation_map);
     cpi->segmentation_map = 0;
     vpx_free(cpi->active_map);
     cpi->active_map = 0;
     vp8_de_alloc_frame_buffers(&cpi->common);
     vp8_yv12_de_alloc_frame_buffer(&cpi->pick_lf_lvl_frame);
     vp8_yv12_de_alloc_frame_buffer(&cpi->scaled_source);
     dealloc_raw_frame_buffers(cpi);
     vpx_free(cpi->tok);
     cpi->tok = 0;
     /* Structure used to monitor GF usage */
     vpx_free(cpi->gf_active_flags);
     cpi->gf_active_flags = 0;
     /* Activity mask based per mb zbin adjustments */
     vpx_free(cpi->mb_activity_map);
     cpi->mb_activity_map = 0;
     vpx_free(cpi->mb.pip);
     cpi->mb.pip = 0;
 #if CONFIG_MULTITHREAD
     vpx_free(cpi->mt_current_mb_col);
     cpi->mt_current_mb_col = NULL;
 #endif
 }
 static void enable_segmentation(VP8_COMP *cpi)
 {
     /* Set the appropriate feature bit */
     cpi->mb.e_mbd.segmentation_enabled = 1;
     cpi->mb.e_mbd.update_mb_segmentation_map = 1;
     cpi->mb.e_mbd.update_mb_segmentation_data = 1;
 }
 static void disable_segmentation(VP8_COMP *cpi)
 {
     /* Clear the appropriate feature bit */
     cpi->mb.e_mbd.segmentation_enabled = 0;
 }
 /* Valid values for a segment are 0 to 3
  * Segmentation map is arrange as [Rows][Columns]
  */
 static void set_segmentation_map(VP8_COMP *cpi, unsigned char *segmentation_map)
 {
     /* Copy in the new segmentation map */
     vpx_memcpy(cpi->segmentation_map, segmentation_map, (cpi->common.mb_rows * cpi->common.mb_cols));
     /* Signal that the map should be updated. */
     cpi->mb.e_mbd.update_mb_segmentation_map = 1;
     cpi->mb.e_mbd.update_mb_segmentation_data = 1;
 }
 /* The values given for each segment can be either deltas (from the default
  * value chosen for the frame) or absolute values.
  *
  * Valid range for abs values is:
  *    (0-127 for MB_LVL_ALT_Q), (0-63 for SEGMENT_ALT_LF)
  * Valid range for delta values are:
  *    (+/-127 for MB_LVL_ALT_Q), (+/-63 for SEGMENT_ALT_LF)
  *
  * abs_delta = SEGMENT_DELTADATA (deltas)
  * abs_delta = SEGMENT_ABSDATA (use the absolute values given).
  *
  */
 static void set_segment_data(VP8_COMP *cpi, signed char *feature_data, unsigned char abs_delta)
 {
     cpi->mb.e_mbd.mb_segement_abs_delta = abs_delta;
     vpx_memcpy(cpi->segment_feature_data, feature_data, sizeof(cpi->segment_feature_data));
 }
 static void segmentation_test_function(VP8_COMP *cpi)
 {
     unsigned char *seg_map;
     signed char feature_data[MB_LVL_MAX][MAX_MB_SEGMENTS];
     // Create a temporary map for segmentation data.
     CHECK_MEM_ERROR(seg_map, vpx_calloc(cpi->common.mb_rows * cpi->common.mb_cols, 1));
     // Set the segmentation Map
     set_segmentation_map(cpi, seg_map);
     // Activate segmentation.
     enable_segmentation(cpi);
     // Set up the quant segment data
     feature_data[MB_LVL_ALT_Q][0] = 0;
     feature_data[MB_LVL_ALT_Q][1] = 4;
     feature_data[MB_LVL_ALT_Q][2] = 0;
     feature_data[MB_LVL_ALT_Q][3] = 0;
     // Set up the loop segment data
     feature_data[MB_LVL_ALT_LF][0] = 0;
     feature_data[MB_LVL_ALT_LF][1] = 0;
     feature_data[MB_LVL_ALT_LF][2] = 0;
     feature_data[MB_LVL_ALT_LF][3] = 0;
     // Initialise the feature data structure
     // SEGMENT_DELTADATA    0, SEGMENT_ABSDATA      1
     set_segment_data(cpi, &feature_data[0][0], SEGMENT_DELTADATA);
     // Delete sementation map
     vpx_free(seg_map);
     seg_map = 0;
 }
 /* A simple function to cyclically refresh the background at a lower Q */
 static void cyclic_background_refresh(VP8_COMP *cpi, int Q, int lf_adjustment)
 {
     unsigned char *seg_map = cpi->segmentation_map;
     signed char feature_data[MB_LVL_MAX][MAX_MB_SEGMENTS];
     int i;
     int block_count = cpi->cyclic_refresh_mode_max_mbs_perframe;
     int mbs_in_frame = cpi->common.mb_rows * cpi->common.mb_cols;
     cpi->cyclic_refresh_q = Q / 2;
     // Set every macroblock to be eligible for update.
     // For key frame this will reset seg map to 0.
     vpx_memset(cpi->segmentation_map, 0, mbs_in_frame);
     if (cpi->common.frame_type != KEY_FRAME)
     {
         /* Cycle through the macro_block rows */
         /* MB loop to set local segmentation map */
         i = cpi->cyclic_refresh_mode_index;
         assert(i < mbs_in_frame);
         do
         {
           /* If the MB is as a candidate for clean up then mark it for
            * possible boost/refresh (segment 1) The segment id may get
            * reset to 0 later if the MB gets coded anything other than
            * last frame 0,0 as only (last frame 0,0) MBs are eligable for
            * refresh : that is to say Mbs likely to be background blocks.
            */
           if (cpi->cyclic_refresh_map[i] == 0)
           {
               seg_map[i] = 1;
               block_count --;
           }
           else if (cpi->cyclic_refresh_map[i] < 0)
               cpi->cyclic_refresh_map[i]++;
           i++;
           if (i == mbs_in_frame)
               i = 0;
         }
         while(block_count && i != cpi->cyclic_refresh_mode_index);
         cpi->cyclic_refresh_mode_index = i;
     }
     /* Activate segmentation. */
     cpi->mb.e_mbd.update_mb_segmentation_map = 1;
     cpi->mb.e_mbd.update_mb_segmentation_data = 1;
     enable_segmentation(cpi);
     /* Set up the quant segment data */
     feature_data[MB_LVL_ALT_Q][0] = 0;
     feature_data[MB_LVL_ALT_Q][1] = (cpi->cyclic_refresh_q - Q);
     feature_data[MB_LVL_ALT_Q][2] = 0;
     feature_data[MB_LVL_ALT_Q][3] = 0;
     /* Set up the loop segment data */
     feature_data[MB_LVL_ALT_LF][0] = 0;
     feature_data[MB_LVL_ALT_LF][1] = lf_adjustment;
     feature_data[MB_LVL_ALT_LF][2] = 0;
     feature_data[MB_LVL_ALT_LF][3] = 0;
     /* Initialise the feature data structure */
     set_segment_data(cpi, &feature_data[0][0], SEGMENT_DELTADATA);
 }
 static void set_default_lf_deltas(VP8_COMP *cpi)
 {
     cpi->mb.e_mbd.mode_ref_lf_delta_enabled = 1;
     cpi->mb.e_mbd.mode_ref_lf_delta_update = 1;
     vpx_memset(cpi->mb.e_mbd.ref_lf_deltas, 0, sizeof(cpi->mb.e_mbd.ref_lf_deltas));
     vpx_memset(cpi->mb.e_mbd.mode_lf_deltas, 0, sizeof(cpi->mb.e_mbd.mode_lf_deltas));
     /* Test of ref frame deltas */
     cpi->mb.e_mbd.ref_lf_deltas[INTRA_FRAME] = 2;
     cpi->mb.e_mbd.ref_lf_deltas[LAST_FRAME] = 0;
     cpi->mb.e_mbd.ref_lf_deltas[GOLDEN_FRAME] = -2;
     cpi->mb.e_mbd.ref_lf_deltas[ALTREF_FRAME] = -2;
     cpi->mb.e_mbd.mode_lf_deltas[0] = 4;               /* BPRED */
     if(cpi->oxcf.Mode == MODE_REALTIME)
       cpi->mb.e_mbd.mode_lf_deltas[1] = -12;              /* Zero */
     else
       cpi->mb.e_mbd.mode_lf_deltas[1] = -2;              /* Zero */
     cpi->mb.e_mbd.mode_lf_deltas[2] = 2;               /* New mv */
     cpi->mb.e_mbd.mode_lf_deltas[3] = 4;               /* Split mv */
 }
 /* Convenience macros for mapping speed and mode into a continuous
  * range
  */
 #define GOOD(x) (x+1)
 #define RT(x) (x+7)
 static int speed_map(int speed, const int *map)
 {
     int res;
     do
     {
         res = *map++;
     } while(speed >= *map++);
     return res;
 }
 static const int thresh_mult_map_znn[] = {
     /* map common to zero, nearest, and near */
 , GOOD(2), 1500, GOOD(3), 2000, RT(0), 1000, RT(2), 2000, INT_MAX
 };
 static const int thresh_mult_map_vhpred[] = {
 , GOOD(2), 1500, GOOD(3), 2000, RT(0), 1000, RT(1), 2000,
     RT(7), INT_MAX, INT_MAX
 };
 static const int thresh_mult_map_bpred[] = {
 , GOOD(0), 2500, GOOD(2), 5000, GOOD(3), 7500, RT(0), 2500, RT(1), 5000,
     RT(6), INT_MAX, INT_MAX
 };
 static const int thresh_mult_map_tm[] = {
 , GOOD(2), 1500, GOOD(3), 2000, RT(0), 0, RT(1), 1000, RT(2), 2000,
     RT(7), INT_MAX, INT_MAX
 };
 static const int thresh_mult_map_new1[] = {
 , GOOD(2), 2000, RT(0), 2000, INT_MAX
 };
 static const int thresh_mult_map_new2[] = {
 , GOOD(2), 2000, GOOD(3), 2500, GOOD(5), 4000, RT(0), 2000, RT(2), 2500,
     RT(5), 4000, INT_MAX
 };
 static const int thresh_mult_map_split1[] = {
 , GOOD(0), 1700, GOOD(2), 10000, GOOD(3), 25000, GOOD(4), INT_MAX,
     RT(0), 5000, RT(1), 10000, RT(2), 25000, RT(3), INT_MAX, INT_MAX
 };
 static const int thresh_mult_map_split2[] = {
 , GOOD(0), 4500, GOOD(2), 20000, GOOD(3), 50000, GOOD(4), INT_MAX,
     RT(0), 10000, RT(1), 20000, RT(2), 50000, RT(3), INT_MAX, INT_MAX
 };
 static const int mode_check_freq_map_zn2[] = {
     /* {zero,nearest}{2,3} */
 , RT(10), 1<<1, RT(11), 1<<2, RT(12), 1<<3, INT_MAX
 };
 static const int mode_check_freq_map_vhbpred[] = {
 , GOOD(5), 2, RT(0), 0, RT(3), 2, RT(5), 4, INT_MAX
 };
 static const int mode_check_freq_map_near2[] = {
 , GOOD(5), 2, RT(0), 0, RT(3), 2, RT(10), 1<<2, RT(11), 1<<3, RT(12), 1<<4,
     INT_MAX
 };
 static const int mode_check_freq_map_new1[] = {
 , RT(10), 1<<1, RT(11), 1<<2, RT(12), 1<<3, INT_MAX
 };
 static const int mode_check_freq_map_new2[] = {
 , GOOD(5), 4, RT(0), 0, RT(3), 4, RT(10), 1<<3, RT(11), 1<<4, RT(12), 1<<5,
     INT_MAX
 };
 static const int mode_check_freq_map_split1[] = {
 , GOOD(2), 2, GOOD(3), 7, RT(1), 2, RT(2), 7, INT_MAX
 };
 static const int mode_check_freq_map_split2[] = {
 , GOOD(1), 2, GOOD(2), 4, GOOD(3), 15, RT(1), 4, RT(2), 15, INT_MAX
 };
 void vp8_set_speed_features(VP8_COMP *cpi)
 {
     SPEED_FEATURES *sf = &cpi->sf;
     int Mode = cpi->compressor_speed;
     int Speed = cpi->Speed;
     int i;
     VP8_COMMON *cm = &cpi->common;
     int last_improved_quant = sf->improved_quant;
     int ref_frames;
     /* Initialise default mode frequency sampling variables */
     for (i = 0; i < MAX_MODES; i ++)
     {
         cpi->mode_check_freq[i] = 0;
     }
     cpi->mb.mbs_tested_so_far = 0;
     /* best quality defaults */
     sf->RD = 1;
     sf->search_method = NSTEP;
     sf->improved_quant = 1;
     sf->improved_dct = 1;
     sf->auto_filter = 1;
     sf->recode_loop = 1;
     sf->quarter_pixel_search = 1;
     sf->half_pixel_search = 1;
     sf->iterative_sub_pixel = 1;
     sf->optimize_coefficients = 1;
     sf->use_fastquant_for_pick = 0;
     sf->no_skip_block4x4_search = 1;
     sf->first_step = 0;
     sf->max_step_search_steps = MAX_MVSEARCH_STEPS;
     sf->improved_mv_pred = 1;
     /* default thresholds to 0 */
     for (i = 0; i < MAX_MODES; i++)
         sf->thresh_mult[i] = 0;
     /* Count enabled references */
     ref_frames = 1;
     if (cpi->ref_frame_flags & VP8_LAST_FRAME)
         ref_frames++;
     if (cpi->ref_frame_flags & VP8_GOLD_FRAME)
         ref_frames++;
     if (cpi->ref_frame_flags & VP8_ALTR_FRAME)
         ref_frames++;
     /* Convert speed to continuous range, with clamping */
     if (Mode == 0)
         Speed = 0;
     else if (Mode == 2)
         Speed = RT(Speed);
     else
     {
         if (Speed > 5)
             Speed = 5;
         Speed = GOOD(Speed);
     }
     sf->thresh_mult[THR_ZERO1] =
     sf->thresh_mult[THR_NEAREST1] =
     sf->thresh_mult[THR_NEAR1] =
     sf->thresh_mult[THR_DC] = 0; /* always */
     sf->thresh_mult[THR_ZERO2] =
     sf->thresh_mult[THR_ZERO3] =
     sf->thresh_mult[THR_NEAREST2] =
     sf->thresh_mult[THR_NEAREST3] =
     sf->thresh_mult[THR_NEAR2]  =
     sf->thresh_mult[THR_NEAR3]  = speed_map(Speed, thresh_mult_map_znn);
     sf->thresh_mult[THR_V_PRED] =
     sf->thresh_mult[THR_H_PRED] = speed_map(Speed, thresh_mult_map_vhpred);
     sf->thresh_mult[THR_B_PRED] = speed_map(Speed, thresh_mult_map_bpred);
     sf->thresh_mult[THR_TM]     = speed_map(Speed, thresh_mult_map_tm);
     sf->thresh_mult[THR_NEW1]   = speed_map(Speed, thresh_mult_map_new1);
     sf->thresh_mult[THR_NEW2]   =
     sf->thresh_mult[THR_NEW3]   = speed_map(Speed, thresh_mult_map_new2);
     sf->thresh_mult[THR_SPLIT1] = speed_map(Speed, thresh_mult_map_split1);
     sf->thresh_mult[THR_SPLIT2] =
     sf->thresh_mult[THR_SPLIT3] = speed_map(Speed, thresh_mult_map_split2);
     cpi->mode_check_freq[THR_ZERO1] =
     cpi->mode_check_freq[THR_NEAREST1] =
     cpi->mode_check_freq[THR_NEAR1] =
     cpi->mode_check_freq[THR_TM]     =
     cpi->mode_check_freq[THR_DC] = 0; /* always */
     cpi->mode_check_freq[THR_ZERO2] =
     cpi->mode_check_freq[THR_ZERO3] =
     cpi->mode_check_freq[THR_NEAREST2] =
     cpi->mode_check_freq[THR_NEAREST3] = speed_map(Speed,
                                                    mode_check_freq_map_zn2);
     cpi->mode_check_freq[THR_NEAR2]  =
     cpi->mode_check_freq[THR_NEAR3]  = speed_map(Speed,
                                                  mode_check_freq_map_near2);
     cpi->mode_check_freq[THR_V_PRED] =
     cpi->mode_check_freq[THR_H_PRED] =
     cpi->mode_check_freq[THR_B_PRED] = speed_map(Speed,
                                                  mode_check_freq_map_vhbpred);
     cpi->mode_check_freq[THR_NEW1]   = speed_map(Speed,
                                                  mode_check_freq_map_new1);
     cpi->mode_check_freq[THR_NEW2]   =
     cpi->mode_check_freq[THR_NEW3]   = speed_map(Speed,
                                                  mode_check_freq_map_new2);
     cpi->mode_check_freq[THR_SPLIT1] = speed_map(Speed,
                                                  mode_check_freq_map_split1);
     cpi->mode_check_freq[THR_SPLIT2] =
     cpi->mode_check_freq[THR_SPLIT3] = speed_map(Speed,
                                                  mode_check_freq_map_split2);
     Speed = cpi->Speed;
     switch (Mode)
     {
 #if !(CONFIG_REALTIME_ONLY)
     case 0: /* best quality mode */
         sf->first_step = 0;
         sf->max_step_search_steps = MAX_MVSEARCH_STEPS;
         break;
     case 1:
     case 3:
         if (Speed > 0)
         {
             /* Disable coefficient optimization above speed 0 */
             sf->optimize_coefficients = 0;
             sf->use_fastquant_for_pick = 1;
             sf->no_skip_block4x4_search = 0;
             sf->first_step = 1;
         }
         if (Speed > 2)
         {
             sf->improved_quant = 0;
             sf->improved_dct = 0;
             /* Only do recode loop on key frames, golden frames and
              * alt ref frames
              */
             sf->recode_loop = 2;
         }
         if (Speed > 3)
         {
             sf->auto_filter = 1;
             sf->recode_loop = 0; /* recode loop off */
             sf->RD = 0;         /* Turn rd off */
         }
         if (Speed > 4)
         {
             sf->auto_filter = 0;  /* Faster selection of loop filter */
         }
         break;
 #endif
     case 2:
         sf->optimize_coefficients = 0;
         sf->recode_loop = 0;
         sf->auto_filter = 1;
         sf->iterative_sub_pixel = 1;
         sf->search_method = NSTEP;
         if (Speed > 0)
         {
             sf->improved_quant = 0;
             sf->improved_dct = 0;
             sf->use_fastquant_for_pick = 1;
             sf->no_skip_block4x4_search = 0;
             sf->first_step = 1;
         }
         if (Speed > 2)
             sf->auto_filter = 0;  /* Faster selection of loop filter */
         if (Speed > 3)
         {
             sf->RD = 0;
             sf->auto_filter = 1;
         }
         if (Speed > 4)
         {
             sf->auto_filter = 0;  /* Faster selection of loop filter */
             sf->search_method = HEX;
             sf->iterative_sub_pixel = 0;
         }
         if (Speed > 6)
         {
             unsigned int sum = 0;
             unsigned int total_mbs = cm->MBs;
             int thresh;
             unsigned int total_skip;
             int min = 2000;
             if (cpi->oxcf.encode_breakout > 2000)
                 min = cpi->oxcf.encode_breakout;
             min >>= 7;
             for (i = 0; i < min; i++)
             {
                 sum += cpi->mb.error_bins[i];
             }
             total_skip = sum;
             sum = 0;
             /* i starts from 2 to make sure thresh started from 2048 */
             for (; i < 1024; i++)
             {
                 sum += cpi->mb.error_bins[i];
                 if (10 * sum >= (unsigned int)(cpi->Speed - 6)*(total_mbs - total_skip))
                     break;
             }
             i--;
             thresh = (i << 7);
             if (thresh < 2000)
                 thresh = 2000;
             if (ref_frames > 1)
             {
                 sf->thresh_mult[THR_NEW1 ] = thresh;
                 sf->thresh_mult[THR_NEAREST1  ] = thresh >> 1;
                 sf->thresh_mult[THR_NEAR1     ] = thresh >> 1;
             }
             if (ref_frames > 2)
             {
                 sf->thresh_mult[THR_NEW2] = thresh << 1;
                 sf->thresh_mult[THR_NEAREST2 ] = thresh;
                 sf->thresh_mult[THR_NEAR2    ] = thresh;
             }
             if (ref_frames > 3)
             {
                 sf->thresh_mult[THR_NEW3] = thresh << 1;
                 sf->thresh_mult[THR_NEAREST3 ] = thresh;
                 sf->thresh_mult[THR_NEAR3    ] = thresh;
             }
             sf->improved_mv_pred = 0;
         }
         if (Speed > 8)
             sf->quarter_pixel_search = 0;
         if(cm->version == 0)
         {
             cm->filter_type = NORMAL_LOOPFILTER;
             if (Speed >= 14)
                 cm->filter_type = SIMPLE_LOOPFILTER;
         }
         else
         {
             cm->filter_type = SIMPLE_LOOPFILTER;
         }
         /* This has a big hit on quality. Last resort */
         if (Speed >= 15)
             sf->half_pixel_search = 0;
         vpx_memset(cpi->mb.error_bins, 0, sizeof(cpi->mb.error_bins));
     }; /* switch */
     /* Slow quant, dct and trellis not worthwhile for first pass
      * so make sure they are always turned off.
      */
     if ( cpi->pass == 1 )
     {
         sf->improved_quant = 0;
         sf->optimize_coefficients = 0;
         sf->improved_dct = 0;
     }
     if (cpi->sf.search_method == NSTEP)
     {
         vp8_init3smotion_compensation(&cpi->mb, cm->yv12_fb[cm->lst_fb_idx].y_stride);
     }
     else if (cpi->sf.search_method == DIAMOND)
     {
         vp8_init_dsmotion_compensation(&cpi->mb, cm->yv12_fb[cm->lst_fb_idx].y_stride);
     }
     if (cpi->sf.improved_dct)
     {
         cpi->mb.short_fdct8x4 = vp8_short_fdct8x4;
         cpi->mb.short_fdct4x4 = vp8_short_fdct4x4;
     }
     else
     {
         /* No fast FDCT defined for any platform at this time. */
         cpi->mb.short_fdct8x4 = vp8_short_fdct8x4;
         cpi->mb.short_fdct4x4 = vp8_short_fdct4x4;
     }
     cpi->mb.short_walsh4x4 = vp8_short_walsh4x4;
     if (cpi->sf.improved_quant)
     {
         cpi->mb.quantize_b      = vp8_regular_quantize_b;
         cpi->mb.quantize_b_pair = vp8_regular_quantize_b_pair;
     }
     else
     {
         cpi->mb.quantize_b      = vp8_fast_quantize_b;
         cpi->mb.quantize_b_pair = vp8_fast_quantize_b_pair;
     }
     if (cpi->sf.improved_quant != last_improved_quant)
         vp8cx_init_quantizer(cpi);
     if (cpi->sf.iterative_sub_pixel == 1)
     {
         cpi->find_fractional_mv_step = vp8_find_best_sub_pixel_step_iteratively;
     }
     else if (cpi->sf.quarter_pixel_search)
     {
         cpi->find_fractional_mv_step = vp8_find_best_sub_pixel_step;
     }
     else if (cpi->sf.half_pixel_search)
     {
         cpi->find_fractional_mv_step = vp8_find_best_half_pixel_step;
     }
     else
     {
         cpi->find_fractional_mv_step = vp8_skip_fractional_mv_step;
     }
     if (cpi->sf.optimize_coefficients == 1 && cpi->pass!=1)
         cpi->mb.optimize = 1;
     else
         cpi->mb.optimize = 0;
     if (cpi->common.full_pixel)
         cpi->find_fractional_mv_step = vp8_skip_fractional_mv_step;
 #ifdef SPEEDSTATS
     frames_at_speed[cpi->Speed]++;
 #endif
 }
 #undef GOOD
 #undef RT
 static void alloc_raw_frame_buffers(VP8_COMP *cpi)
 {
 #if VP8_TEMPORAL_ALT_REF
     int width = (cpi->oxcf.Width + 15) & ~15;
     int height = (cpi->oxcf.Height + 15) & ~15;
 #endif
     cpi->lookahead = vp8_lookahead_init(cpi->oxcf.Width, cpi->oxcf.Height,
                                         cpi->oxcf.lag_in_frames);
     if(!cpi->lookahead)
         vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                            "Failed to allocate lag buffers");
 #if VP8_TEMPORAL_ALT_REF
     if (vp8_yv12_alloc_frame_buffer(&cpi->alt_ref_buffer,
                                     width, height, VP8BORDERINPIXELS))
         vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                            "Failed to allocate altref buffer");
 #endif
 }
 static void dealloc_raw_frame_buffers(VP8_COMP *cpi)
 {
 #if VP8_TEMPORAL_ALT_REF
     vp8_yv12_de_alloc_frame_buffer(&cpi->alt_ref_buffer);
 #endif
     vp8_lookahead_destroy(cpi->lookahead);
 }
 static int vp8_alloc_partition_data(VP8_COMP *cpi)
 {
         vpx_free(cpi->mb.pip);
     cpi->mb.pip = vpx_calloc((cpi->common.mb_cols + 1) *
                                 (cpi->common.mb_rows + 1),
                                 sizeof(PARTITION_INFO));
     if(!cpi->mb.pip)
         return 1;
     cpi->mb.pi = cpi->mb.pip + cpi->common.mode_info_stride + 1;
     return 0;
 }
 void vp8_alloc_compressor_data(VP8_COMP *cpi)
 {
     VP8_COMMON *cm = & cpi->common;
     int width = cm->Width;
     int height = cm->Height;
     if (vp8_alloc_frame_buffers(cm, width, height))
         vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                            "Failed to allocate frame buffers");
     if (vp8_alloc_partition_data(cpi))
         vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                            "Failed to allocate partition data");
     if ((width & 0xf) != 0)
         width += 16 - (width & 0xf);
     if ((height & 0xf) != 0)
         height += 16 - (height & 0xf);
     if (vp8_yv12_alloc_frame_buffer(&cpi->pick_lf_lvl_frame,
                                     width, height, VP8BORDERINPIXELS))
         vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                            "Failed to allocate last frame buffer");
     if (vp8_yv12_alloc_frame_buffer(&cpi->scaled_source,
                                     width, height, VP8BORDERINPIXELS))
         vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                            "Failed to allocate scaled source buffer");
     vpx_free(cpi->tok);
     {
 #if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING
         unsigned int tokens = 8 * 24 * 16; /* one MB for each thread */
 #else
         unsigned int tokens = cm->mb_rows * cm->mb_cols * 24 * 16;
 #endif
         CHECK_MEM_ERROR(cpi->tok, vpx_calloc(tokens, sizeof(*cpi->tok)));
     }
     /* Data used for real time vc mode to see if gf needs refreshing */
     cpi->zeromv_count = 0;
     /* Structures used to monitor GF usage */
     vpx_free(cpi->gf_active_flags);
     CHECK_MEM_ERROR(cpi->gf_active_flags,
                     vpx_calloc(sizeof(*cpi->gf_active_flags),
                     cm->mb_rows * cm->mb_cols));
     cpi->gf_active_count = cm->mb_rows * cm->mb_cols;
     vpx_free(cpi->mb_activity_map);
     CHECK_MEM_ERROR(cpi->mb_activity_map,
                     vpx_calloc(sizeof(*cpi->mb_activity_map),
                     cm->mb_rows * cm->mb_cols));
     /* allocate memory for storing last frame's MVs for MV prediction. */
     vpx_free(cpi->lfmv);
     CHECK_MEM_ERROR(cpi->lfmv, vpx_calloc((cm->mb_rows+2) * (cm->mb_cols+2),
                     sizeof(*cpi->lfmv)));
     vpx_free(cpi->lf_ref_frame_sign_bias);
     CHECK_MEM_ERROR(cpi->lf_ref_frame_sign_bias,
                     vpx_calloc((cm->mb_rows+2) * (cm->mb_cols+2),
                     sizeof(*cpi->lf_ref_frame_sign_bias)));
     vpx_free(cpi->lf_ref_frame);
     CHECK_MEM_ERROR(cpi->lf_ref_frame,
                     vpx_calloc((cm->mb_rows+2) * (cm->mb_cols+2),
                     sizeof(*cpi->lf_ref_frame)));
     /* Create the encoder segmentation map and set all entries to 0 */
     vpx_free(cpi->segmentation_map);
     CHECK_MEM_ERROR(cpi->segmentation_map,
                     vpx_calloc(cm->mb_rows * cm->mb_cols,
                     sizeof(*cpi->segmentation_map)));
     cpi->cyclic_refresh_mode_index = 0;
     vpx_free(cpi->active_map);
     CHECK_MEM_ERROR(cpi->active_map,
                     vpx_calloc(cm->mb_rows * cm->mb_cols,
                     sizeof(*cpi->active_map)));
     vpx_memset(cpi->active_map , 1, (cm->mb_rows * cm->mb_cols));
 #if CONFIG_MULTITHREAD
     if (width < 640)
         cpi->mt_sync_range = 1;
     else if (width <= 1280)
         cpi->mt_sync_range = 4;
     else if (width <= 2560)
         cpi->mt_sync_range = 8;
     else
         cpi->mt_sync_range = 16;
     if (cpi->oxcf.multi_threaded > 1)
     {
         vpx_free(cpi->mt_current_mb_col);
         CHECK_MEM_ERROR(cpi->mt_current_mb_col,
                     vpx_malloc(sizeof(*cpi->mt_current_mb_col) * cm->mb_rows));
     }
 #endif
     vpx_free(cpi->tplist);
     CHECK_MEM_ERROR(cpi->tplist, vpx_malloc(sizeof(TOKENLIST) * cm->mb_rows));
 }
 /* Quant MOD */
 static const int q_trans[] =
 {
 ,   1,  2,  3,  4,  5,  7,  8,
 ,  10, 12, 13, 15, 17, 18, 19,
 ,  21, 23, 24, 25, 26, 27, 28,
 ,  30, 31, 33, 35, 37, 39, 41,
 ,  45, 47, 49, 51, 53, 55, 57,
 ,  61, 64, 67, 70, 73, 76, 79,
 ,  85, 88, 91, 94, 97, 100, 103,
 , 109, 112, 115, 118, 121, 124, 127,
 };
 int vp8_reverse_trans(int x)
 {
     int i;
     for (i = 0; i < 64; i++)
         if (q_trans[i] >= x)
             return i;
     return 63;
 }
 void vp8_new_framerate(VP8_COMP *cpi, double framerate)
 {
     if(framerate < .1)
         framerate = 30;
     cpi->framerate              = framerate;
     cpi->output_framerate       = framerate;
     cpi->per_frame_bandwidth    = (int)(cpi->oxcf.target_bandwidth /
                                   cpi->output_framerate);
     cpi->av_per_frame_bandwidth = cpi->per_frame_bandwidth;
     cpi->min_frame_bandwidth    = (int)(cpi->av_per_frame_bandwidth *
                                   cpi->oxcf.two_pass_vbrmin_section / 100);
     /* Set Maximum gf/arf interval */
     cpi->max_gf_interval = ((int)(cpi->output_framerate / 2.0) + 2);
     if(cpi->max_gf_interval < 12)
         cpi->max_gf_interval = 12;
     /* Extended interval for genuinely static scenes */
     cpi->twopass.static_scene_max_gf_interval = cpi->key_frame_frequency >> 1;
      /* Special conditions when altr ref frame enabled in lagged compress mode */
     if (cpi->oxcf.play_alternate && cpi->oxcf.lag_in_frames)
     {
         if (cpi->max_gf_interval > cpi->oxcf.lag_in_frames - 1)
             cpi->max_gf_interval = cpi->oxcf.lag_in_frames - 1;
         if (cpi->twopass.static_scene_max_gf_interval > cpi->oxcf.lag_in_frames - 1)
             cpi->twopass.static_scene_max_gf_interval = cpi->oxcf.lag_in_frames - 1;
     }
     if ( cpi->max_gf_interval > cpi->twopass.static_scene_max_gf_interval )
         cpi->max_gf_interval = cpi->twopass.static_scene_max_gf_interval;
 }
 static void init_config(VP8_COMP *cpi, VP8_CONFIG *oxcf)
 {
     VP8_COMMON *cm = &cpi->common;
     cpi->oxcf = *oxcf;
     cpi->auto_gold = 1;
     cpi->auto_adjust_gold_quantizer = 1;
     cm->version = oxcf->Version;
     vp8_setup_version(cm);
     /* frame rate is not available on the first frame, as it's derived from
      * the observed timestamps. The actual value used here doesn't matter
      * too much, as it will adapt quickly. If the reciprocal of the timebase
      * seems like a reasonable framerate, then use that as a guess, otherwise
      * use 30.
      */
     cpi->framerate = (double)(oxcf->timebase.den) /
                      (double)(oxcf->timebase.num);
     if (cpi->framerate > 180)
         cpi->framerate = 30;
     cpi->ref_framerate = cpi->framerate;
     /* change includes all joint functionality */
     vp8_change_config(cpi, oxcf);
     /* Initialize active best and worst q and average q values. */
     cpi->active_worst_quality         = cpi->oxcf.worst_allowed_q;
     cpi->active_best_quality          = cpi->oxcf.best_allowed_q;
     cpi->avg_frame_qindex             = cpi->oxcf.worst_allowed_q;
     /* Initialise the starting buffer levels */
     cpi->buffer_level                 = cpi->oxcf.starting_buffer_level;
     cpi->bits_off_target              = cpi->oxcf.starting_buffer_level;
     cpi->rolling_target_bits          = cpi->av_per_frame_bandwidth;
     cpi->rolling_actual_bits          = cpi->av_per_frame_bandwidth;
     cpi->long_rolling_target_bits     = cpi->av_per_frame_bandwidth;
     cpi->long_rolling_actual_bits     = cpi->av_per_frame_bandwidth;
     cpi->total_actual_bits            = 0;
     cpi->total_target_vs_actual       = 0;
     /* Temporal scalabilty */
     if (cpi->oxcf.number_of_layers > 1)
     {
         unsigned int i;
         double prev_layer_framerate=0;
         for (i=0; i<cpi->oxcf.number_of_layers; i++)
         {
             init_temporal_layer_context(cpi, oxcf, i, prev_layer_framerate);
             prev_layer_framerate = cpi->output_framerate /
                                    cpi->oxcf.rate_decimator[i];
         }
     }
 #if VP8_TEMPORAL_ALT_REF
     {
         int i;
         cpi->fixed_divide[0] = 0;
         for (i = 1; i < 512; i++)
             cpi->fixed_divide[i] = 0x80000 / i;
     }
 #endif
 }
 static void update_layer_contexts (VP8_COMP *cpi)
 {
     VP8_CONFIG *oxcf = &cpi->oxcf;
     /* Update snapshots of the layer contexts to reflect new parameters */
     if (oxcf->number_of_layers > 1)
     {
         unsigned int i;
         double prev_layer_framerate=0;
         for (i=0; i<oxcf->number_of_layers; i++)
         {
             LAYER_CONTEXT *lc = &cpi->layer_context[i];
             lc->framerate =
                 cpi->ref_framerate / oxcf->rate_decimator[i];
             lc->target_bandwidth = oxcf->target_bitrate[i] * 1000;
             lc->starting_buffer_level = rescale(
                           (int)oxcf->starting_buffer_level_in_ms,
                           lc->target_bandwidth, 1000);
             if (oxcf->optimal_buffer_level == 0)
                 lc->optimal_buffer_level = lc->target_bandwidth / 8;
             else
                 lc->optimal_buffer_level = rescale(
                           (int)oxcf->optimal_buffer_level_in_ms,
                           lc->target_bandwidth, 1000);
             if (oxcf->maximum_buffer_size == 0)
                 lc->maximum_buffer_size = lc->target_bandwidth / 8;
             else
                 lc->maximum_buffer_size = rescale(
                           (int)oxcf->maximum_buffer_size_in_ms,
                           lc->target_bandwidth, 1000);
             /* Work out the average size of a frame within this layer */
             if (i > 0)
                 lc->avg_frame_size_for_layer =
                    (int)((oxcf->target_bitrate[i] -
                           oxcf->target_bitrate[i-1]) * 1000 /
                           (lc->framerate - prev_layer_framerate));
             prev_layer_framerate = lc->framerate;
         }
     }
 }
 void vp8_change_config(VP8_COMP *cpi, VP8_CONFIG *oxcf)
 {
     VP8_COMMON *cm = &cpi->common;
     int last_w, last_h, prev_number_of_layers;
     if (!cpi)
         return;
     if (!oxcf)
         return;
 #if CONFIG_MULTITHREAD
     /*  wait for the last picture loopfilter thread done */
     if (cpi->b_lpf_running)
     {
         sem_wait(&cpi->h_event_end_lpf);
         cpi->b_lpf_running = 0;
     }
 #endif
     if (cm->version != oxcf->Version)
     {
         cm->version = oxcf->Version;
         vp8_setup_version(cm);
     }
     last_w = cpi->oxcf.Width;
     last_h = cpi->oxcf.Height;
     prev_number_of_layers = cpi->oxcf.number_of_layers;
     cpi->oxcf = *oxcf;
     switch (cpi->oxcf.Mode)
     {
     case MODE_REALTIME:
         cpi->pass = 0;
         cpi->compressor_speed = 2;
         if (cpi->oxcf.cpu_used < -16)
         {
             cpi->oxcf.cpu_used = -16;
         }
         if (cpi->oxcf.cpu_used > 16)
             cpi->oxcf.cpu_used = 16;
         break;
     case MODE_GOODQUALITY:
         cpi->pass = 0;
         cpi->compressor_speed = 1;
         if (cpi->oxcf.cpu_used < -5)
         {
             cpi->oxcf.cpu_used = -5;
         }
         if (cpi->oxcf.cpu_used > 5)
             cpi->oxcf.cpu_used = 5;
         break;
     case MODE_BESTQUALITY:
         cpi->pass = 0;
         cpi->compressor_speed = 0;
         break;
     case MODE_FIRSTPASS:
         cpi->pass = 1;
         cpi->compressor_speed = 1;
         break;
     case MODE_SECONDPASS:
         cpi->pass = 2;
         cpi->compressor_speed = 1;
         if (cpi->oxcf.cpu_used < -5)
         {
             cpi->oxcf.cpu_used = -5;
         }
         if (cpi->oxcf.cpu_used > 5)
             cpi->oxcf.cpu_used = 5;
         break;
     case MODE_SECONDPASS_BEST:
         cpi->pass = 2;
         cpi->compressor_speed = 0;
         break;
     }
     if (cpi->pass == 0)
         cpi->auto_worst_q = 1;
     cpi->oxcf.worst_allowed_q = q_trans[oxcf->worst_allowed_q];
     cpi->oxcf.best_allowed_q = q_trans[oxcf->best_allowed_q];
     cpi->oxcf.cq_level = q_trans[cpi->oxcf.cq_level];
     if (oxcf->fixed_q >= 0)
     {
         if (oxcf->worst_allowed_q < 0)
             cpi->oxcf.fixed_q = q_trans[0];
         else
             cpi->oxcf.fixed_q = q_trans[oxcf->worst_allowed_q];
         if (oxcf->alt_q < 0)
             cpi->oxcf.alt_q = q_trans[0];
         else
             cpi->oxcf.alt_q = q_trans[oxcf->alt_q];
         if (oxcf->key_q < 0)
             cpi->oxcf.key_q = q_trans[0];
         else
             cpi->oxcf.key_q = q_trans[oxcf->key_q];
         if (oxcf->gold_q < 0)
             cpi->oxcf.gold_q = q_trans[0];
         else
             cpi->oxcf.gold_q = q_trans[oxcf->gold_q];
     }
     cpi->baseline_gf_interval =
         cpi->oxcf.alt_freq ? cpi->oxcf.alt_freq : DEFAULT_GF_INTERVAL;
     cpi->ref_frame_flags = VP8_ALTR_FRAME | VP8_GOLD_FRAME | VP8_LAST_FRAME;
     cm->refresh_golden_frame = 0;
     cm->refresh_last_frame = 1;
     cm->refresh_entropy_probs = 1;
 #if (CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING)
     cpi->oxcf.token_partitions = 3;
 #endif
     if (cpi->oxcf.token_partitions >= 0 && cpi->oxcf.token_partitions <= 3)
         cm->multi_token_partition =
             (TOKEN_PARTITION) cpi->oxcf.token_partitions;
     setup_features(cpi);
     {
         int i;
         for (i = 0; i < MAX_MB_SEGMENTS; i++)
             cpi->segment_encode_breakout[i] = cpi->oxcf.encode_breakout;
     }
     /* At the moment the first order values may not be > MAXQ */
     if (cpi->oxcf.fixed_q > MAXQ)
         cpi->oxcf.fixed_q = MAXQ;
     /* local file playback mode == really big buffer */
     if (cpi->oxcf.end_usage == USAGE_LOCAL_FILE_PLAYBACK)
     {
         cpi->oxcf.starting_buffer_level       = 60000;
         cpi->oxcf.optimal_buffer_level        = 60000;
         cpi->oxcf.maximum_buffer_size         = 240000;
         cpi->oxcf.starting_buffer_level_in_ms = 60000;
         cpi->oxcf.optimal_buffer_level_in_ms  = 60000;
         cpi->oxcf.maximum_buffer_size_in_ms   = 240000;
     }
     /* Convert target bandwidth from Kbit/s to Bit/s */
     cpi->oxcf.target_bandwidth       *= 1000;
     cpi->oxcf.starting_buffer_level =
         rescale((int)cpi->oxcf.starting_buffer_level,
                 cpi->oxcf.target_bandwidth, 1000);
     /* Set or reset optimal and maximum buffer levels. */
     if (cpi->oxcf.optimal_buffer_level == 0)
         cpi->oxcf.optimal_buffer_level = cpi->oxcf.target_bandwidth / 8;
     else
         cpi->oxcf.optimal_buffer_level =
             rescale((int)cpi->oxcf.optimal_buffer_level,
                     cpi->oxcf.target_bandwidth, 1000);
     if (cpi->oxcf.maximum_buffer_size == 0)
         cpi->oxcf.maximum_buffer_size = cpi->oxcf.target_bandwidth / 8;
     else
         cpi->oxcf.maximum_buffer_size =
             rescale((int)cpi->oxcf.maximum_buffer_size,
                     cpi->oxcf.target_bandwidth, 1000);
     /* Set up frame rate and related parameters rate control values. */
     vp8_new_framerate(cpi, cpi->framerate);
     /* Set absolute upper and lower quality limits */
     cpi->worst_quality               = cpi->oxcf.worst_allowed_q;
     cpi->best_quality                = cpi->oxcf.best_allowed_q;
     /* active values should only be modified if out of new range */
     if (cpi->active_worst_quality > cpi->oxcf.worst_allowed_q)
     {
       cpi->active_worst_quality = cpi->oxcf.worst_allowed_q;
     }
     /* less likely */
     else if (cpi->active_worst_quality < cpi->oxcf.best_allowed_q)
     {
       cpi->active_worst_quality = cpi->oxcf.best_allowed_q;
     }
     if (cpi->active_best_quality < cpi->oxcf.best_allowed_q)
     {
       cpi->active_best_quality = cpi->oxcf.best_allowed_q;
     }
     /* less likely */
     else if (cpi->active_best_quality > cpi->oxcf.worst_allowed_q)
     {
       cpi->active_best_quality = cpi->oxcf.worst_allowed_q;
     }
     cpi->buffered_mode = cpi->oxcf.optimal_buffer_level > 0;
     cpi->cq_target_quality = cpi->oxcf.cq_level;
     /* Only allow dropped frames in buffered mode */
     cpi->drop_frames_allowed = cpi->oxcf.allow_df && cpi->buffered_mode;
     cpi->target_bandwidth = cpi->oxcf.target_bandwidth;
     // Check if the number of temporal layers has changed, and if so reset the
     // pattern counter and set/initialize the temporal layer context for the
     // new layer configuration.
     if (cpi->oxcf.number_of_layers != prev_number_of_layers)
     {
         // If the number of temporal layers are changed we must start at the
         // base of the pattern cycle, so reset temporal_pattern_counter.
         cpi->temporal_pattern_counter = 0;
         reset_temporal_layer_change(cpi, oxcf, prev_number_of_layers);
     }
     cm->Width       = cpi->oxcf.Width;
     cm->Height      = cpi->oxcf.Height;
     /* TODO(jkoleszar): if an internal spatial resampling is active,
      * and we downsize the input image, maybe we should clear the
      * internal scale immediately rather than waiting for it to
      * correct.
      */
     /* VP8 sharpness level mapping 0-7 (vs 0-10 in general VPx dialogs) */
     if (cpi->oxcf.Sharpness > 7)
         cpi->oxcf.Sharpness = 7;
     cm->sharpness_level = cpi->oxcf.Sharpness;
     if (cm->horiz_scale != NORMAL || cm->vert_scale != NORMAL)
     {
         int UNINITIALIZED_IS_SAFE(hr), UNINITIALIZED_IS_SAFE(hs);
         int UNINITIALIZED_IS_SAFE(vr), UNINITIALIZED_IS_SAFE(vs);
         Scale2Ratio(cm->horiz_scale, &hr, &hs);
         Scale2Ratio(cm->vert_scale, &vr, &vs);
         /* always go to the next whole number */
         cm->Width = (hs - 1 + cpi->oxcf.Width * hr) / hs;
         cm->Height = (vs - 1 + cpi->oxcf.Height * vr) / vs;
     }
     if (last_w != cpi->oxcf.Width || last_h != cpi->oxcf.Height)
         cpi->force_next_frame_intra = 1;
     if (((cm->Width + 15) & 0xfffffff0) !=
           cm->yv12_fb[cm->lst_fb_idx].y_width ||
         ((cm->Height + 15) & 0xfffffff0) !=
           cm->yv12_fb[cm->lst_fb_idx].y_height ||
         cm->yv12_fb[cm->lst_fb_idx].y_width == 0)
     {
         dealloc_raw_frame_buffers(cpi);
         alloc_raw_frame_buffers(cpi);
         vp8_alloc_compressor_data(cpi);
     }
     if (cpi->oxcf.fixed_q >= 0)
     {
         cpi->last_q[0] = cpi->oxcf.fixed_q;
         cpi->last_q[1] = cpi->oxcf.fixed_q;
     }
     cpi->Speed = cpi->oxcf.cpu_used;
     /* force to allowlag to 0 if lag_in_frames is 0; */
     if (cpi->oxcf.lag_in_frames == 0)
     {
         cpi->oxcf.allow_lag = 0;
     }
     /* Limit on lag buffers as these are not currently dynamically allocated */
     else if (cpi->oxcf.lag_in_frames > MAX_LAG_BUFFERS)
         cpi->oxcf.lag_in_frames = MAX_LAG_BUFFERS;
     /* YX Temp */
     cpi->alt_ref_source = NULL;
     cpi->is_src_frame_alt_ref = 0;
 #if CONFIG_TEMPORAL_DENOISING
     if (cpi->oxcf.noise_sensitivity)
     {
       if (!cpi->denoiser.yv12_mc_running_avg.buffer_alloc)
       {
         int width = (cpi->oxcf.Width + 15) & ~15;
         int height = (cpi->oxcf.Height + 15) & ~15;
         vp8_denoiser_allocate(&cpi->denoiser, width, height);
       }
     }
 #endif
 #if 0
     /* Experimental RD Code */
     cpi->frame_distortion = 0;
     cpi->last_frame_distortion = 0;
 #endif
 }
 #define M_LOG2_E 0.693147180559945309417
 #define log2f(x) (log (x) / (float) M_LOG2_E)
 static void cal_mvsadcosts(int *mvsadcost[2])
 {
     int i = 1;
     mvsadcost [0] [0] = 300;
     mvsadcost [1] [0] = 300;
     do
     {
         double z = 256 * (2 * (log2f(8 * i) + .6));
         mvsadcost [0][i] = (int) z;
         mvsadcost [1][i] = (int) z;
         mvsadcost [0][-i] = (int) z;
         mvsadcost [1][-i] = (int) z;
     }
     while (++i <= mvfp_max);
 }
 struct VP8_COMP* vp8_create_compressor(VP8_CONFIG *oxcf)
 {
     int i;
     VP8_COMP *cpi;
     VP8_COMMON *cm;
     cpi = vpx_memalign(32, sizeof(VP8_COMP));
     /* Check that the CPI instance is valid */
     if (!cpi)
         return 0;
     cm = &cpi->common;
     vpx_memset(cpi, 0, sizeof(VP8_COMP));
     if (setjmp(cm->error.jmp))
     {
         cpi->common.error.setjmp = 0;
         vp8_remove_compressor(&cpi);
         return 0;
     }
     cpi->common.error.setjmp = 1;
     CHECK_MEM_ERROR(cpi->mb.ss, vpx_calloc(sizeof(search_site), (MAX_MVSEARCH_STEPS * 8) + 1));
     vp8_create_common(&cpi->common);
     init_config(cpi, oxcf);
     memcpy(cpi->base_skip_false_prob, vp8cx_base_skip_false_prob, sizeof(vp8cx_base_skip_false_prob));
     cpi->common.current_video_frame   = 0;
     cpi->temporal_pattern_counter     = 0;
     cpi->kf_overspend_bits            = 0;
     cpi->kf_bitrate_adjustment        = 0;
     cpi->frames_till_gf_update_due      = 0;
     cpi->gf_overspend_bits            = 0;
     cpi->non_gf_bitrate_adjustment     = 0;
     cpi->prob_last_coded              = 128;
     cpi->prob_gf_coded                = 128;
     cpi->prob_intra_coded             = 63;
     /* Prime the recent reference frame usage counters.
      * Hereafter they will be maintained as a sort of moving average
      */
     cpi->recent_ref_frame_usage[INTRA_FRAME]  = 1;
     cpi->recent_ref_frame_usage[LAST_FRAME]   = 1;
     cpi->recent_ref_frame_usage[GOLDEN_FRAME] = 1;
     cpi->recent_ref_frame_usage[ALTREF_FRAME] = 1;
     /* Set reference frame sign bias for ALTREF frame to 1 (for now) */
     cpi->common.ref_frame_sign_bias[ALTREF_FRAME] = 1;
     cpi->twopass.gf_decay_rate = 0;
     cpi->baseline_gf_interval = DEFAULT_GF_INTERVAL;
     cpi->gold_is_last = 0 ;
     cpi->alt_is_last  = 0 ;
     cpi->gold_is_alt  = 0 ;
     cpi->active_map_enabled = 0;
 #if 0
     /* Experimental code for lagged and one pass */
     /* Initialise one_pass GF frames stats */
     /* Update stats used for GF selection */
     if (cpi->pass == 0)
     {
         cpi->one_pass_frame_index = 0;
         for (i = 0; i < MAX_LAG_BUFFERS; i++)
         {
             cpi->one_pass_frame_stats[i].frames_so_far = 0;
             cpi->one_pass_frame_stats[i].frame_intra_error = 0.0;
             cpi->one_pass_frame_stats[i].frame_coded_error = 0.0;
             cpi->one_pass_frame_stats[i].frame_pcnt_inter = 0.0;
             cpi->one_pass_frame_stats[i].frame_pcnt_motion = 0.0;
             cpi->one_pass_frame_stats[i].frame_mvr = 0.0;
             cpi->one_pass_frame_stats[i].frame_mvr_abs = 0.0;
             cpi->one_pass_frame_stats[i].frame_mvc = 0.0;
             cpi->one_pass_frame_stats[i].frame_mvc_abs = 0.0;
         }
     }
 #endif
     /* Should we use the cyclic refresh method.
      * Currently this is tied to error resilliant mode
      */
     cpi->cyclic_refresh_mode_enabled = cpi->oxcf.error_resilient_mode;
     cpi->cyclic_refresh_mode_max_mbs_perframe = (cpi->common.mb_rows * cpi->common.mb_cols) / 5;
     cpi->cyclic_refresh_mode_index = 0;
     cpi->cyclic_refresh_q = 32;
     if (cpi->cyclic_refresh_mode_enabled)
     {
         CHECK_MEM_ERROR(cpi->cyclic_refresh_map, vpx_calloc((cpi->common.mb_rows * cpi->common.mb_cols), 1));
     }
     else
         cpi->cyclic_refresh_map = (signed char *) NULL;
 #ifdef VP8_ENTROPY_STATS
     init_context_counters();
 #endif
     /*Initialize the feed-forward activity masking.*/
     cpi->activity_avg = 90<<12;
     /* Give a sensible default for the first frame. */
     cpi->frames_since_key = 8;
     cpi->key_frame_frequency = cpi->oxcf.key_freq;
     cpi->this_key_frame_forced = 0;
     cpi->next_key_frame_forced = 0;
     cpi->source_alt_ref_pending = 0;
     cpi->source_alt_ref_active = 0;
     cpi->common.refresh_alt_ref_frame = 0;
     cpi->b_calculate_psnr = CONFIG_INTERNAL_STATS;
 #if CONFIG_INTERNAL_STATS
     cpi->b_calculate_ssimg = 0;
     cpi->count = 0;
     cpi->bytes = 0;
     if (cpi->b_calculate_psnr)
     {
         cpi->total_sq_error = 0.0;
         cpi->total_sq_error2 = 0.0;
         cpi->total_y = 0.0;
         cpi->total_u = 0.0;
         cpi->total_v = 0.0;
         cpi->total = 0.0;
         cpi->totalp_y = 0.0;
         cpi->totalp_u = 0.0;
         cpi->totalp_v = 0.0;
         cpi->totalp = 0.0;
         cpi->tot_recode_hits = 0;
         cpi->summed_quality = 0;
         cpi->summed_weights = 0;
     }
     if (cpi->b_calculate_ssimg)
     {
         cpi->total_ssimg_y = 0;
         cpi->total_ssimg_u = 0;
         cpi->total_ssimg_v = 0;
         cpi->total_ssimg_all = 0;
     }
 #endif
     cpi->first_time_stamp_ever = 0x7FFFFFFF;
     cpi->frames_till_gf_update_due      = 0;
     cpi->key_frame_count              = 1;
     cpi->ni_av_qi                     = cpi->oxcf.worst_allowed_q;
     cpi->ni_tot_qi                    = 0;
     cpi->ni_frames                   = 0;
     cpi->total_byte_count             = 0;
     cpi->drop_frame                  = 0;
     cpi->rate_correction_factor         = 1.0;
     cpi->key_frame_rate_correction_factor = 1.0;
     cpi->gf_rate_correction_factor  = 1.0;
     cpi->twopass.est_max_qcorrection_factor  = 1.0;
     for (i = 0; i < KEY_FRAME_CONTEXT; i++)
     {
         cpi->prior_key_frame_distance[i] = (int)cpi->output_framerate;
     }
 #ifdef OUTPUT_YUV_SRC
     yuv_file = fopen("bd.yuv", "ab");
 #endif
 #if 0
     framepsnr = fopen("framepsnr.stt", "a");
     kf_list = fopen("kf_list.stt", "w");
 #endif
     cpi->output_pkt_list = oxcf->output_pkt_list;
 #if !(CONFIG_REALTIME_ONLY)
     if (cpi->pass == 1)
     {
         vp8_init_first_pass(cpi);
     }
     else if (cpi->pass == 2)
     {
         size_t packet_sz = sizeof(FIRSTPASS_STATS);
         int packets = (int)(oxcf->two_pass_stats_in.sz / packet_sz);
         cpi->twopass.stats_in_start = oxcf->two_pass_stats_in.buf;
         cpi->twopass.stats_in = cpi->twopass.stats_in_start;
         cpi->twopass.stats_in_end = (void*)((char *)cpi->twopass.stats_in
                             + (packets - 1) * packet_sz);
         vp8_init_second_pass(cpi);
     }
 #endif
     if (cpi->compressor_speed == 2)
     {
         cpi->avg_encode_time      = 0;
         cpi->avg_pick_mode_time    = 0;
     }
     vp8_set_speed_features(cpi);
     /* Set starting values of RD threshold multipliers (128 = *1) */
     for (i = 0; i < MAX_MODES; i++)
     {
         cpi->mb.rd_thresh_mult[i] = 128;
     }
 #ifdef VP8_ENTROPY_STATS
     init_mv_ref_counts();
 #endif
 #if CONFIG_MULTITHREAD
     if(vp8cx_create_encoder_threads(cpi))
     {
         vp8_remove_compressor(&cpi);
         return 0;
     }
 #endif
     cpi->fn_ptr[BLOCK_16X16].sdf            = vp8_sad16x16;
     cpi->fn_ptr[BLOCK_16X16].vf             = vp8_variance16x16;
     cpi->fn_ptr[BLOCK_16X16].svf            = vp8_sub_pixel_variance16x16;
     cpi->fn_ptr[BLOCK_16X16].svf_halfpix_h  = vp8_variance_halfpixvar16x16_h;
     cpi->fn_ptr[BLOCK_16X16].svf_halfpix_v  = vp8_variance_halfpixvar16x16_v;
     cpi->fn_ptr[BLOCK_16X16].svf_halfpix_hv = vp8_variance_halfpixvar16x16_hv;
     cpi->fn_ptr[BLOCK_16X16].sdx3f          = vp8_sad16x16x3;
     cpi->fn_ptr[BLOCK_16X16].sdx8f          = vp8_sad16x16x8;
     cpi->fn_ptr[BLOCK_16X16].sdx4df         = vp8_sad16x16x4d;
     cpi->fn_ptr[BLOCK_16X8].sdf            = vp8_sad16x8;
     cpi->fn_ptr[BLOCK_16X8].vf             = vp8_variance16x8;
     cpi->fn_ptr[BLOCK_16X8].svf            = vp8_sub_pixel_variance16x8;
     cpi->fn_ptr[BLOCK_16X8].svf_halfpix_h  = NULL;
     cpi->fn_ptr[BLOCK_16X8].svf_halfpix_v  = NULL;
     cpi->fn_ptr[BLOCK_16X8].svf_halfpix_hv = NULL;
     cpi->fn_ptr[BLOCK_16X8].sdx3f          = vp8_sad16x8x3;
     cpi->fn_ptr[BLOCK_16X8].sdx8f          = vp8_sad16x8x8;
     cpi->fn_ptr[BLOCK_16X8].sdx4df         = vp8_sad16x8x4d;
     cpi->fn_ptr[BLOCK_8X16].sdf            = vp8_sad8x16;
     cpi->fn_ptr[BLOCK_8X16].vf             = vp8_variance8x16;
     cpi->fn_ptr[BLOCK_8X16].svf            = vp8_sub_pixel_variance8x16;
     cpi->fn_ptr[BLOCK_8X16].svf_halfpix_h  = NULL;
     cpi->fn_ptr[BLOCK_8X16].svf_halfpix_v  = NULL;
     cpi->fn_ptr[BLOCK_8X16].svf_halfpix_hv = NULL;
     cpi->fn_ptr[BLOCK_8X16].sdx3f          = vp8_sad8x16x3;
     cpi->fn_ptr[BLOCK_8X16].sdx8f          = vp8_sad8x16x8;
     cpi->fn_ptr[BLOCK_8X16].sdx4df         = vp8_sad8x16x4d;
     cpi->fn_ptr[BLOCK_8X8].sdf            = vp8_sad8x8;
     cpi->fn_ptr[BLOCK_8X8].vf             = vp8_variance8x8;
     cpi->fn_ptr[BLOCK_8X8].svf            = vp8_sub_pixel_variance8x8;
     cpi->fn_ptr[BLOCK_8X8].svf_halfpix_h  = NULL;
     cpi->fn_ptr[BLOCK_8X8].svf_halfpix_v  = NULL;
     cpi->fn_ptr[BLOCK_8X8].svf_halfpix_hv = NULL;
     cpi->fn_ptr[BLOCK_8X8].sdx3f          = vp8_sad8x8x3;
     cpi->fn_ptr[BLOCK_8X8].sdx8f          = vp8_sad8x8x8;
     cpi->fn_ptr[BLOCK_8X8].sdx4df         = vp8_sad8x8x4d;
     cpi->fn_ptr[BLOCK_4X4].sdf            = vp8_sad4x4;
     cpi->fn_ptr[BLOCK_4X4].vf             = vp8_variance4x4;
     cpi->fn_ptr[BLOCK_4X4].svf            = vp8_sub_pixel_variance4x4;
     cpi->fn_ptr[BLOCK_4X4].svf_halfpix_h  = NULL;
     cpi->fn_ptr[BLOCK_4X4].svf_halfpix_v  = NULL;
     cpi->fn_ptr[BLOCK_4X4].svf_halfpix_hv = NULL;
     cpi->fn_ptr[BLOCK_4X4].sdx3f          = vp8_sad4x4x3;
     cpi->fn_ptr[BLOCK_4X4].sdx8f          = vp8_sad4x4x8;
     cpi->fn_ptr[BLOCK_4X4].sdx4df         = vp8_sad4x4x4d;
 #if ARCH_X86 || ARCH_X86_64
     cpi->fn_ptr[BLOCK_16X16].copymem      = vp8_copy32xn;
     cpi->fn_ptr[BLOCK_16X8].copymem       = vp8_copy32xn;
     cpi->fn_ptr[BLOCK_8X16].copymem       = vp8_copy32xn;
     cpi->fn_ptr[BLOCK_8X8].copymem        = vp8_copy32xn;
     cpi->fn_ptr[BLOCK_4X4].copymem        = vp8_copy32xn;
 #endif
     cpi->full_search_sad = vp8_full_search_sad;
     cpi->diamond_search_sad = vp8_diamond_search_sad;
     cpi->refining_search_sad = vp8_refining_search_sad;
     /* make sure frame 1 is okay */
     cpi->mb.error_bins[0] = cpi->common.MBs;
     /* vp8cx_init_quantizer() is first called here. Add check in
      * vp8cx_frame_init_quantizer() so that vp8cx_init_quantizer is only
      * called later when needed. This will avoid unnecessary calls of
      * vp8cx_init_quantizer() for every frame.
      */
     vp8cx_init_quantizer(cpi);
     vp8_loop_filter_init(cm);
     cpi->common.error.setjmp = 0;
 #if CONFIG_MULTI_RES_ENCODING
     /* Calculate # of MBs in a row in lower-resolution level image. */
     if (cpi->oxcf.mr_encoder_id > 0)
         vp8_cal_low_res_mb_cols(cpi);
 #endif
     /* setup RD costs to MACROBLOCK struct */
     cpi->mb.mvcost[0] = &cpi->rd_costs.mvcosts[0][mv_max+1];
     cpi->mb.mvcost[1] = &cpi->rd_costs.mvcosts[1][mv_max+1];
     cpi->mb.mvsadcost[0] = &cpi->rd_costs.mvsadcosts[0][mvfp_max+1];
     cpi->mb.mvsadcost[1] = &cpi->rd_costs.mvsadcosts[1][mvfp_max+1];
     cal_mvsadcosts(cpi->mb.mvsadcost);
     cpi->mb.mbmode_cost = cpi->rd_costs.mbmode_cost;
     cpi->mb.intra_uv_mode_cost = cpi->rd_costs.intra_uv_mode_cost;
     cpi->mb.bmode_costs = cpi->rd_costs.bmode_costs;
     cpi->mb.inter_bmode_costs = cpi->rd_costs.inter_bmode_costs;
     cpi->mb.token_costs = cpi->rd_costs.token_costs;
     /* setup block ptrs & offsets */
     vp8_setup_block_ptrs(&cpi->mb);
     vp8_setup_block_dptrs(&cpi->mb.e_mbd);
     return  cpi;
 }
 void vp8_remove_compressor(VP8_COMP **ptr)
 {
     VP8_COMP *cpi = *ptr;
     if (!cpi)
         return;
     if (cpi && (cpi->common.current_video_frame > 0))
     {
 #if !(CONFIG_REALTIME_ONLY)
         if (cpi->pass == 2)
         {
             vp8_end_second_pass(cpi);
         }
 #endif
 #ifdef VP8_ENTROPY_STATS
         print_context_counters();
         print_tree_update_probs();
         print_mode_context();
 #endif
 #if CONFIG_INTERNAL_STATS
         if (cpi->pass != 1)
         {
             FILE *f = fopen("opsnr.stt", "a");
             double time_encoded = (cpi->last_end_time_stamp_seen
                                    - cpi->first_time_stamp_ever) / 10000000.000;
             double total_encode_time = (cpi->time_receive_data +
                                             cpi->time_compress_data) / 1000.000;
             double dr = (double)cpi->bytes * 8.0 / 1000.0 / time_encoded;
             if (cpi->b_calculate_psnr)
             {
                 YV12_BUFFER_CONFIG *lst_yv12 =
                               &cpi->common.yv12_fb[cpi->common.lst_fb_idx];
                 if (cpi->oxcf.number_of_layers > 1)
                 {
                     int i;
                     fprintf(f, "Layer\tBitrate\tAVGPsnr\tGLBPsnr\tAVPsnrP\t"
                                "GLPsnrP\tVPXSSIM\t\n");
                     for (i=0; i<(int)cpi->oxcf.number_of_layers; i++)
                     {
                         double dr = (double)cpi->bytes_in_layer[i] *
 .0 / 1000.0  / time_encoded;
                         double samples = 3.0 / 2 * cpi->frames_in_layer[i] *
                                          lst_yv12->y_width * lst_yv12->y_height;
                         double total_psnr = vp8_mse2psnr(samples, 255.0,
                                                   cpi->total_error2[i]);
                         double total_psnr2 = vp8_mse2psnr(samples, 255.0,
                                                   cpi->total_error2_p[i]);
                         double total_ssim = 100 * pow(cpi->sum_ssim[i] /
                                                       cpi->sum_weights[i], 8.0);
                         fprintf(f, "%5d\t%7.3f\t%7.3f\t%7.3f\t%7.3f\t"
                                    "%7.3f\t%7.3f\n",
                                    i, dr,
                                    cpi->sum_psnr[i] / cpi->frames_in_layer[i],
                                    total_psnr,
                                    cpi->sum_psnr_p[i] / cpi->frames_in_layer[i],
                                    total_psnr2, total_ssim);
                     }
                 }
                 else
                 {
                     double samples = 3.0 / 2 * cpi->count *
                                         lst_yv12->y_width * lst_yv12->y_height;
                     double total_psnr = vp8_mse2psnr(samples, 255.0,
                                                          cpi->total_sq_error);
                     double total_psnr2 = vp8_mse2psnr(samples, 255.0,
                                                          cpi->total_sq_error2);
                     double total_ssim = 100 * pow(cpi->summed_quality /
                                                       cpi->summed_weights, 8.0);
                     fprintf(f, "Bitrate\tAVGPsnr\tGLBPsnr\tAVPsnrP\t"
                                "GLPsnrP\tVPXSSIM\t  Time(us)\n");
                     fprintf(f, "%7.3f\t%7.3f\t%7.3f\t%7.3f\t%7.3f\t"
                                "%7.3f\t%8.0f\n",
                                dr, cpi->total / cpi->count, total_psnr,
                                cpi->totalp / cpi->count, total_psnr2,
                                total_ssim, total_encode_time);
                 }
             }
             if (cpi->b_calculate_ssimg)
             {
                 if (cpi->oxcf.number_of_layers > 1)
                 {
                     int i;
                     fprintf(f, "Layer\tBitRate\tSSIM_Y\tSSIM_U\tSSIM_V\tSSIM_A\t"
                                "Time(us)\n");
                     for (i=0; i<(int)cpi->oxcf.number_of_layers; i++)
                     {
                         double dr = (double)cpi->bytes_in_layer[i] *
 .0 / 1000.0  / time_encoded;
                         fprintf(f, "%5d\t%7.3f\t%6.4f\t"
                                 "%6.4f\t%6.4f\t%6.4f\t%8.0f\n",
                                 i, dr,
                                 cpi->total_ssimg_y_in_layer[i] /
                                      cpi->frames_in_layer[i],
                                 cpi->total_ssimg_u_in_layer[i] /
                                      cpi->frames_in_layer[i],
                                 cpi->total_ssimg_v_in_layer[i] /
                                      cpi->frames_in_layer[i],
                                 cpi->total_ssimg_all_in_layer[i] /
                                      cpi->frames_in_layer[i],
                                 total_encode_time);
                     }
                 }
                 else
                 {
                     fprintf(f, "BitRate\tSSIM_Y\tSSIM_U\tSSIM_V\tSSIM_A\t"
                                "Time(us)\n");
                     fprintf(f, "%7.3f\t%6.4f\t%6.4f\t%6.4f\t%6.4f\t%8.0f\n", dr,
                             cpi->total_ssimg_y / cpi->count,
                             cpi->total_ssimg_u / cpi->count,
                             cpi->total_ssimg_v / cpi->count,
                             cpi->total_ssimg_all / cpi->count, total_encode_time);
                 }
             }
             fclose(f);
 #if 0
             f = fopen("qskip.stt", "a");
             fprintf(f, "minq:%d -maxq:%d skiptrue:skipfalse = %d:%d\n", cpi->oxcf.best_allowed_q, cpi->oxcf.worst_allowed_q, skiptruecount, skipfalsecount);
             fclose(f);
 #endif
         }
 #endif
 #ifdef SPEEDSTATS
         if (cpi->compressor_speed == 2)
         {
             int i;
             FILE *f = fopen("cxspeed.stt", "a");
             cnt_pm /= cpi->common.MBs;
             for (i = 0; i < 16; i++)
                 fprintf(f, "%5d", frames_at_speed[i]);
             fprintf(f, "\n");
             fclose(f);
         }
 #endif
 #ifdef MODE_STATS
         {
             extern int count_mb_seg[4];
             FILE *f = fopen("modes.stt", "a");
             double dr = (double)cpi->framerate * (double)bytes * (double)8 / (double)count / (double)1000 ;
             fprintf(f, "intra_mode in Intra Frames:\n");
             fprintf(f, "Y: %8d, %8d, %8d, %8d, %8d\n", y_modes[0], y_modes[1], y_modes[2], y_modes[3], y_modes[4]);
             fprintf(f, "UV:%8d, %8d, %8d, %8d\n", uv_modes[0], uv_modes[1], uv_modes[2], uv_modes[3]);
             fprintf(f, "B: ");
             {
                 int i;
                 for (i = 0; i < 10; i++)
                     fprintf(f, "%8d, ", b_modes[i]);
                 fprintf(f, "\n");
             }
             fprintf(f, "Modes in Inter Frames:\n");
             fprintf(f, "Y: %8d, %8d, %8d, %8d, %8d, %8d, %8d, %8d, %8d, %8d\n",
                     inter_y_modes[0], inter_y_modes[1], inter_y_modes[2], inter_y_modes[3], inter_y_modes[4],
                     inter_y_modes[5], inter_y_modes[6], inter_y_modes[7], inter_y_modes[8], inter_y_modes[9]);
             fprintf(f, "UV:%8d, %8d, %8d, %8d\n", inter_uv_modes[0], inter_uv_modes[1], inter_uv_modes[2], inter_uv_modes[3]);
             fprintf(f, "B: ");
             {
                 int i;
                 for (i = 0; i < 15; i++)
                     fprintf(f, "%8d, ", inter_b_modes[i]);
                 fprintf(f, "\n");
             }
             fprintf(f, "P:%8d, %8d, %8d, %8d\n", count_mb_seg[0], count_mb_seg[1], count_mb_seg[2], count_mb_seg[3]);
             fprintf(f, "PB:%8d, %8d, %8d, %8d\n", inter_b_modes[LEFT4X4], inter_b_modes[ABOVE4X4], inter_b_modes[ZERO4X4], inter_b_modes[NEW4X4]);
             fclose(f);
         }
 #endif
 #ifdef VP8_ENTROPY_STATS
         {
             int i, j, k;
             FILE *fmode = fopen("modecontext.c", "w");
             fprintf(fmode, "\n#include \"entropymode.h\"\n\n");
             fprintf(fmode, "const unsigned int vp8_kf_default_bmode_counts ");
             fprintf(fmode, "[VP8_BINTRAMODES] [VP8_BINTRAMODES] [VP8_BINTRAMODES] =\n{\n");
             for (i = 0; i < 10; i++)
             {
                 fprintf(fmode, "    { /* Above Mode :  %d */\n", i);
                 for (j = 0; j < 10; j++)
                 {
                     fprintf(fmode, "        {");
                     for (k = 0; k < 10; k++)
                     {
                         if (!intra_mode_stats[i][j][k])
                             fprintf(fmode, " %5d, ", 1);
                         else
                             fprintf(fmode, " %5d, ", intra_mode_stats[i][j][k]);
                     }
                     fprintf(fmode, "}, /* left_mode %d */\n", j);
                 }
                 fprintf(fmode, "    },\n");
             }
             fprintf(fmode, "};\n");
             fclose(fmode);
         }
 #endif
 #if defined(SECTIONBITS_OUTPUT)
         if (0)
         {
             int i;
             FILE *f = fopen("tokenbits.stt", "a");
             for (i = 0; i < 28; i++)
                 fprintf(f, "%8d", (int)(Sectionbits[i] / 256));
             fprintf(f, "\n");
             fclose(f);
         }
 #endif
 #if 0
         {
             printf("\n_pick_loop_filter_level:%d\n", cpi->time_pick_lpf / 1000);
             printf("\n_frames recive_data encod_mb_row compress_frame  Total\n");
             printf("%6d %10ld %10ld %10ld %10ld\n", cpi->common.current_video_frame, cpi->time_receive_data / 1000, cpi->time_encode_mb_row / 1000, cpi->time_compress_data / 1000, (cpi->time_receive_data + cpi->time_compress_data) / 1000);
         }
 #endif
     }
 #if CONFIG_MULTITHREAD
     vp8cx_remove_encoder_threads(cpi);
 #endif
 #if CONFIG_TEMPORAL_DENOISING
     vp8_denoiser_free(&cpi->denoiser);
 #endif
     dealloc_compressor_data(cpi);
     vpx_free(cpi->mb.ss);
     vpx_free(cpi->tok);
     vpx_free(cpi->cyclic_refresh_map);
     vp8_remove_common(&cpi->common);
     vpx_free(cpi);
     *ptr = 0;
 #ifdef OUTPUT_YUV_SRC
     fclose(yuv_file);
 #endif
 #if 0
     if (keyfile)
         fclose(keyfile);
     if (framepsnr)
         fclose(framepsnr);
     if (kf_list)
         fclose(kf_list);
 #endif
 }
 static uint64_t calc_plane_error(unsigned char *orig, int orig_stride,
                                  unsigned char *recon, int recon_stride,
                                  unsigned int cols, unsigned int rows)
 {
     unsigned int row, col;
     uint64_t total_sse = 0;
     int diff;
     for (row = 0; row + 16 <= rows; row += 16)
     {
         for (col = 0; col + 16 <= cols; col += 16)
         {
             unsigned int sse;
             vp8_mse16x16(orig + col, orig_stride,
                                             recon + col, recon_stride,
                                             &sse);
             total_sse += sse;
         }
         /* Handle odd-sized width */
         if (col < cols)
         {
             unsigned int   border_row, border_col;
             unsigned char *border_orig = orig;
             unsigned char *border_recon = recon;
             for (border_row = 0; border_row < 16; border_row++)
             {
                 for (border_col = col; border_col < cols; border_col++)
                 {
                     diff = border_orig[border_col] - border_recon[border_col];
                     total_sse += diff * diff;
                 }
                 border_orig += orig_stride;
                 border_recon += recon_stride;
             }
         }
         orig += orig_stride * 16;
         recon += recon_stride * 16;
     }
     /* Handle odd-sized height */
     for (; row < rows; row++)
     {
         for (col = 0; col < cols; col++)
         {
             diff = orig[col] - recon[col];
             total_sse += diff * diff;
         }
         orig += orig_stride;
         recon += recon_stride;
     }
     vp8_clear_system_state();
     return total_sse;
 }
 static void generate_psnr_packet(VP8_COMP *cpi)
 {
     YV12_BUFFER_CONFIG      *orig = cpi->Source;
     YV12_BUFFER_CONFIG      *recon = cpi->common.frame_to_show;
     struct vpx_codec_cx_pkt  pkt;
     uint64_t                 sse;
     int                      i;
     unsigned int             width = cpi->common.Width;
     unsigned int             height = cpi->common.Height;
     pkt.kind = VPX_CODEC_PSNR_PKT;
     sse = calc_plane_error(orig->y_buffer, orig->y_stride,
                            recon->y_buffer, recon->y_stride,
                            width, height);
     pkt.data.psnr.sse[0] = sse;
     pkt.data.psnr.sse[1] = sse;
     pkt.data.psnr.samples[0] = width * height;
     pkt.data.psnr.samples[1] = width * height;
     width = (width + 1) / 2;
     height = (height + 1) / 2;
     sse = calc_plane_error(orig->u_buffer, orig->uv_stride,
                            recon->u_buffer, recon->uv_stride,
                            width, height);
     pkt.data.psnr.sse[0] += sse;
     pkt.data.psnr.sse[2] = sse;
     pkt.data.psnr.samples[0] += width * height;
     pkt.data.psnr.samples[2] = width * height;
     sse = calc_plane_error(orig->v_buffer, orig->uv_stride,
                            recon->v_buffer, recon->uv_stride,
                            width, height);
     pkt.data.psnr.sse[0] += sse;
     pkt.data.psnr.sse[3] = sse;
     pkt.data.psnr.samples[0] += width * height;
     pkt.data.psnr.samples[3] = width * height;
     for (i = 0; i < 4; i++)
         pkt.data.psnr.psnr[i] = vp8_mse2psnr(pkt.data.psnr.samples[i], 255.0,
                                              (double)(pkt.data.psnr.sse[i]));
     vpx_codec_pkt_list_add(cpi->output_pkt_list, &pkt);
 }
 int vp8_use_as_reference(VP8_COMP *cpi, int ref_frame_flags)
 {
     if (ref_frame_flags > 7)
         return -1 ;
     cpi->ref_frame_flags = ref_frame_flags;
     return 0;
 }
 int vp8_update_reference(VP8_COMP *cpi, int ref_frame_flags)
 {
     if (ref_frame_flags > 7)
         return -1 ;
     cpi->common.refresh_golden_frame = 0;
     cpi->common.refresh_alt_ref_frame = 0;
     cpi->common.refresh_last_frame   = 0;
     if (ref_frame_flags & VP8_LAST_FRAME)
         cpi->common.refresh_last_frame = 1;
     if (ref_frame_flags & VP8_GOLD_FRAME)
         cpi->common.refresh_golden_frame = 1;
     if (ref_frame_flags & VP8_ALTR_FRAME)
         cpi->common.refresh_alt_ref_frame = 1;
     return 0;
 }
 int vp8_get_reference(VP8_COMP *cpi, enum vpx_ref_frame_type ref_frame_flag, YV12_BUFFER_CONFIG *sd)
 {
     VP8_COMMON *cm = &cpi->common;
     int ref_fb_idx;
     if (ref_frame_flag == VP8_LAST_FRAME)
         ref_fb_idx = cm->lst_fb_idx;
     else if (ref_frame_flag == VP8_GOLD_FRAME)
         ref_fb_idx = cm->gld_fb_idx;
     else if (ref_frame_flag == VP8_ALTR_FRAME)
         ref_fb_idx = cm->alt_fb_idx;
     else
         return -1;
     vp8_yv12_copy_frame(&cm->yv12_fb[ref_fb_idx], sd);
     return 0;
 }
 int vp8_set_reference(VP8_COMP *cpi, enum vpx_ref_frame_type ref_frame_flag, YV12_BUFFER_CONFIG *sd)
 {
     VP8_COMMON *cm = &cpi->common;
     int ref_fb_idx;
     if (ref_frame_flag == VP8_LAST_FRAME)
         ref_fb_idx = cm->lst_fb_idx;
     else if (ref_frame_flag == VP8_GOLD_FRAME)
         ref_fb_idx = cm->gld_fb_idx;
     else if (ref_frame_flag == VP8_ALTR_FRAME)
         ref_fb_idx = cm->alt_fb_idx;
     else
         return -1;
     vp8_yv12_copy_frame(sd, &cm->yv12_fb[ref_fb_idx]);
     return 0;
 }
 int vp8_update_entropy(VP8_COMP *cpi, int update)
 {
     VP8_COMMON *cm = &cpi->common;
     cm->refresh_entropy_probs = update;
     return 0;
 }
 #if OUTPUT_YUV_SRC
 void vp8_write_yuv_frame(const char *name, YV12_BUFFER_CONFIG *s)
 {
     FILE *yuv_file = fopen(name, "ab");
     unsigned char *src = s->y_buffer;
     int h = s->y_height;
     do
     {
         fwrite(src, s->y_width, 1,  yuv_file);
         src += s->y_stride;
     }
     while (--h);
     src = s->u_buffer;
     h = s->uv_height;
     do
     {
         fwrite(src, s->uv_width, 1,  yuv_file);
         src += s->uv_stride;
     }
     while (--h);
     src = s->v_buffer;
     h = s->uv_height;
     do
     {
         fwrite(src, s->uv_width, 1, yuv_file);
         src += s->uv_stride;
     }
     while (--h);
     fclose(yuv_file);
 }
 #endif
 static void scale_and_extend_source(YV12_BUFFER_CONFIG *sd, VP8_COMP *cpi)
 {
     VP8_COMMON *cm = &cpi->common;
     /* are we resizing the image */
     if (cm->horiz_scale != 0 || cm->vert_scale != 0)
     {
 #if CONFIG_SPATIAL_RESAMPLING
         int UNINITIALIZED_IS_SAFE(hr), UNINITIALIZED_IS_SAFE(hs);
         int UNINITIALIZED_IS_SAFE(vr), UNINITIALIZED_IS_SAFE(vs);
         int tmp_height;
         if (cm->vert_scale == 3)
             tmp_height = 9;
         else
             tmp_height = 11;
         Scale2Ratio(cm->horiz_scale, &hr, &hs);
         Scale2Ratio(cm->vert_scale, &vr, &vs);
         vpx_scale_frame(sd, &cpi->scaled_source, cm->temp_scale_frame.y_buffer,
                         tmp_height, hs, hr, vs, vr, 0);
         vp8_yv12_extend_frame_borders(&cpi->scaled_source);
         cpi->Source = &cpi->scaled_source;
 #endif
     }
     else
         cpi->Source = sd;
 }
 static int resize_key_frame(VP8_COMP *cpi)
 {
 #if CONFIG_SPATIAL_RESAMPLING
     VP8_COMMON *cm = &cpi->common;
     /* Do we need to apply resampling for one pass cbr.
      * In one pass this is more limited than in two pass cbr
      * The test and any change is only made one per key frame sequence
      */
     if (cpi->oxcf.allow_spatial_resampling && (cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER))
     {
         int UNINITIALIZED_IS_SAFE(hr), UNINITIALIZED_IS_SAFE(hs);
         int UNINITIALIZED_IS_SAFE(vr), UNINITIALIZED_IS_SAFE(vs);
         int new_width, new_height;
         /* If we are below the resample DOWN watermark then scale down a
          * notch.
          */
         if (cpi->buffer_level < (cpi->oxcf.resample_down_water_mark * cpi->oxcf.optimal_buffer_level / 100))
         {
             cm->horiz_scale = (cm->horiz_scale < ONETWO) ? cm->horiz_scale + 1 : ONETWO;
             cm->vert_scale = (cm->vert_scale < ONETWO) ? cm->vert_scale + 1 : ONETWO;
         }
         /* Should we now start scaling back up */
         else if (cpi->buffer_level > (cpi->oxcf.resample_up_water_mark * cpi->oxcf.optimal_buffer_level / 100))
         {
             cm->horiz_scale = (cm->horiz_scale > NORMAL) ? cm->horiz_scale - 1 : NORMAL;
             cm->vert_scale = (cm->vert_scale > NORMAL) ? cm->vert_scale - 1 : NORMAL;
         }
         /* Get the new hieght and width */
         Scale2Ratio(cm->horiz_scale, &hr, &hs);
         Scale2Ratio(cm->vert_scale, &vr, &vs);
         new_width = ((hs - 1) + (cpi->oxcf.Width * hr)) / hs;
         new_height = ((vs - 1) + (cpi->oxcf.Height * vr)) / vs;
         /* If the image size has changed we need to reallocate the buffers
          * and resample the source image
          */
         if ((cm->Width != new_width) || (cm->Height != new_height))
         {
             cm->Width = new_width;
             cm->Height = new_height;
             vp8_alloc_compressor_data(cpi);
             scale_and_extend_source(cpi->un_scaled_source, cpi);
             return 1;
         }
     }
 #endif
     return 0;
 }
 static void update_alt_ref_frame_stats(VP8_COMP *cpi)
 {
     VP8_COMMON *cm = &cpi->common;
     /* Select an interval before next GF or altref */
     if (!cpi->auto_gold)
         cpi->frames_till_gf_update_due = DEFAULT_GF_INTERVAL;
     if ((cpi->pass != 2) && cpi->frames_till_gf_update_due)
     {
         cpi->current_gf_interval = cpi->frames_till_gf_update_due;
         /* Set the bits per frame that we should try and recover in
          * subsequent inter frames to account for the extra GF spend...
          * note that his does not apply for GF updates that occur
          * coincident with a key frame as the extra cost of key frames is
          * dealt with elsewhere.
          */
         cpi->gf_overspend_bits += cpi->projected_frame_size;
         cpi->non_gf_bitrate_adjustment = cpi->gf_overspend_bits / cpi->frames_till_gf_update_due;
     }
     /* Update data structure that monitors level of reference to last GF */
     vpx_memset(cpi->gf_active_flags, 1, (cm->mb_rows * cm->mb_cols));
     cpi->gf_active_count = cm->mb_rows * cm->mb_cols;
     /* this frame refreshes means next frames don't unless specified by user */
     cpi->frames_since_golden = 0;
     /* Clear the alternate reference update pending flag. */
     cpi->source_alt_ref_pending = 0;
     /* Set the alternate reference frame active flag */
     cpi->source_alt_ref_active = 1;
 }
 static void update_golden_frame_stats(VP8_COMP *cpi)
 {
     VP8_COMMON *cm = &cpi->common;
     /* Update the Golden frame usage counts. */
     if (cm->refresh_golden_frame)
     {
         /* Select an interval before next GF */
         if (!cpi->auto_gold)
             cpi->frames_till_gf_update_due = DEFAULT_GF_INTERVAL;
         if ((cpi->pass != 2) && (cpi->frames_till_gf_update_due > 0))
         {
             cpi->current_gf_interval = cpi->frames_till_gf_update_due;
             /* Set the bits per frame that we should try and recover in
              * subsequent inter frames to account for the extra GF spend...
              * note that his does not apply for GF updates that occur
              * coincident with a key frame as the extra cost of key frames
              * is dealt with elsewhere.
              */
             if ((cm->frame_type != KEY_FRAME) && !cpi->source_alt_ref_active)
             {
                 /* Calcluate GF bits to be recovered
                  * Projected size - av frame bits available for inter
                  * frames for clip as a whole
                  */
                 cpi->gf_overspend_bits += (cpi->projected_frame_size - cpi->inter_frame_target);
             }
             cpi->non_gf_bitrate_adjustment = cpi->gf_overspend_bits / cpi->frames_till_gf_update_due;
         }
         /* Update data structure that monitors level of reference to last GF */
         vpx_memset(cpi->gf_active_flags, 1, (cm->mb_rows * cm->mb_cols));
         cpi->gf_active_count = cm->mb_rows * cm->mb_cols;
         /* this frame refreshes means next frames don't unless specified by
          * user
          */
         cm->refresh_golden_frame = 0;
         cpi->frames_since_golden = 0;
         cpi->recent_ref_frame_usage[INTRA_FRAME] = 1;
         cpi->recent_ref_frame_usage[LAST_FRAME] = 1;
         cpi->recent_ref_frame_usage[GOLDEN_FRAME] = 1;
         cpi->recent_ref_frame_usage[ALTREF_FRAME] = 1;
         /* ******** Fixed Q test code only ************ */
         /* If we are going to use the ALT reference for the next group of
          * frames set a flag to say so.
          */
         if (cpi->oxcf.fixed_q >= 0 &&
             cpi->oxcf.play_alternate && !cpi->common.refresh_alt_ref_frame)
         {
             cpi->source_alt_ref_pending = 1;
             cpi->frames_till_gf_update_due = cpi->baseline_gf_interval;
         }
         if (!cpi->source_alt_ref_pending)
             cpi->source_alt_ref_active = 0;
         /* Decrement count down till next gf */
         if (cpi->frames_till_gf_update_due > 0)
             cpi->frames_till_gf_update_due--;
     }
     else if (!cpi->common.refresh_alt_ref_frame)
     {
         /* Decrement count down till next gf */
         if (cpi->frames_till_gf_update_due > 0)
             cpi->frames_till_gf_update_due--;
         if (cpi->frames_till_alt_ref_frame)
             cpi->frames_till_alt_ref_frame --;
         cpi->frames_since_golden ++;
         if (cpi->frames_since_golden > 1)
         {
             cpi->recent_ref_frame_usage[INTRA_FRAME] +=
                 cpi->mb.count_mb_ref_frame_usage[INTRA_FRAME];
             cpi->recent_ref_frame_usage[LAST_FRAME] +=
                 cpi->mb.count_mb_ref_frame_usage[LAST_FRAME];
             cpi->recent_ref_frame_usage[GOLDEN_FRAME] +=
                 cpi->mb.count_mb_ref_frame_usage[GOLDEN_FRAME];
             cpi->recent_ref_frame_usage[ALTREF_FRAME] +=
                 cpi->mb.count_mb_ref_frame_usage[ALTREF_FRAME];
         }
     }
 }
 /* This function updates the reference frame probability estimates that
  * will be used during mode selection
  */
 static void update_rd_ref_frame_probs(VP8_COMP *cpi)
 {
     VP8_COMMON *cm = &cpi->common;
     const int *const rfct = cpi->mb.count_mb_ref_frame_usage;
     const int rf_intra = rfct[INTRA_FRAME];
     const int rf_inter = rfct[LAST_FRAME] + rfct[GOLDEN_FRAME] + rfct[ALTREF_FRAME];
     if (cm->frame_type == KEY_FRAME)
     {
         cpi->prob_intra_coded = 255;
         cpi->prob_last_coded  = 128;
         cpi->prob_gf_coded  = 128;
     }
     else if (!(rf_intra + rf_inter))
     {
         cpi->prob_intra_coded = 63;
         cpi->prob_last_coded  = 128;
         cpi->prob_gf_coded    = 128;
     }
     /* update reference frame costs since we can do better than what we got
      * last frame.
      */
     if (cpi->oxcf.number_of_layers == 1)
     {
         if (cpi->common.refresh_alt_ref_frame)
         {
             cpi->prob_intra_coded += 40;
             if (cpi->prob_intra_coded > 255)
                 cpi->prob_intra_coded = 255;
             cpi->prob_last_coded = 200;
             cpi->prob_gf_coded = 1;
         }
         else if (cpi->frames_since_golden == 0)
         {
             cpi->prob_last_coded = 214;
         }
         else if (cpi->frames_since_golden == 1)
         {
             cpi->prob_last_coded = 192;
             cpi->prob_gf_coded = 220;
         }
         else if (cpi->source_alt_ref_active)
         {
             cpi->prob_gf_coded -= 20;
             if (cpi->prob_gf_coded < 10)
                 cpi->prob_gf_coded = 10;
         }
         if (!cpi->source_alt_ref_active)
             cpi->prob_gf_coded = 255;
     }
 }
 /* 1 = key, 0 = inter */
 static int decide_key_frame(VP8_COMP *cpi)
 {
     VP8_COMMON *cm = &cpi->common;
     int code_key_frame = 0;
     cpi->kf_boost = 0;
     if (cpi->Speed > 11)
         return 0;
     /* Clear down mmx registers */
     vp8_clear_system_state();
     if ((cpi->compressor_speed == 2) && (cpi->Speed >= 5) && (cpi->sf.RD == 0))
     {
         double change = 1.0 * abs((int)(cpi->mb.intra_error -
             cpi->last_intra_error)) / (1 + cpi->last_intra_error);
         double change2 = 1.0 * abs((int)(cpi->mb.prediction_error -
             cpi->last_prediction_error)) / (1 + cpi->last_prediction_error);
         double minerror = cm->MBs * 256;
         cpi->last_intra_error = cpi->mb.intra_error;
         cpi->last_prediction_error = cpi->mb.prediction_error;
         if (10 * cpi->mb.intra_error / (1 + cpi->mb.prediction_error) < 15
             && cpi->mb.prediction_error > minerror
             && (change > .25 || change2 > .25))
         {
             /*(change > 1.4 || change < .75)&& cpi->this_frame_percent_intra > cpi->last_frame_percent_intra + 3*/
             return 1;
         }
         return 0;
     }
     /* If the following are true we might as well code a key frame */
     if (((cpi->this_frame_percent_intra == 100) &&
          (cpi->this_frame_percent_intra > (cpi->last_frame_percent_intra + 2))) ||
         ((cpi->this_frame_percent_intra > 95) &&
          (cpi->this_frame_percent_intra >= (cpi->last_frame_percent_intra + 5))))
     {
         code_key_frame = 1;
     }
     /* in addition if the following are true and this is not a golden frame
      * then code a key frame Note that on golden frames there often seems
      * to be a pop in intra useage anyway hence this restriction is
      * designed to prevent spurious key frames. The Intra pop needs to be
      * investigated.
      */
     else if (((cpi->this_frame_percent_intra > 60) &&
               (cpi->this_frame_percent_intra > (cpi->last_frame_percent_intra * 2))) ||
              ((cpi->this_frame_percent_intra > 75) &&
               (cpi->this_frame_percent_intra > (cpi->last_frame_percent_intra * 3 / 2))) ||
              ((cpi->this_frame_percent_intra > 90) &&
               (cpi->this_frame_percent_intra > (cpi->last_frame_percent_intra + 10))))
     {
         if (!cm->refresh_golden_frame)
             code_key_frame = 1;
     }
     return code_key_frame;
 }
 #if !(CONFIG_REALTIME_ONLY)
 static void Pass1Encode(VP8_COMP *cpi, unsigned long *size, unsigned char *dest, unsigned int *frame_flags)
 {
     (void) size;
     (void) dest;
     (void) frame_flags;
     vp8_set_quantizer(cpi, 26);
     vp8_first_pass(cpi);
 }
 #endif
 #if 0
 void write_cx_frame_to_file(YV12_BUFFER_CONFIG *frame, int this_frame)
 {
     /* write the frame */
     FILE *yframe;
     int i;
     char filename[255];
     sprintf(filename, "cx\\y%04d.raw", this_frame);
     yframe = fopen(filename, "wb");
     for (i = 0; i < frame->y_height; i++)
         fwrite(frame->y_buffer + i * frame->y_stride, frame->y_width, 1, yframe);
     fclose(yframe);
     sprintf(filename, "cx\\u%04d.raw", this_frame);
     yframe = fopen(filename, "wb");
     for (i = 0; i < frame->uv_height; i++)
         fwrite(frame->u_buffer + i * frame->uv_stride, frame->uv_width, 1, yframe);
     fclose(yframe);
     sprintf(filename, "cx\\v%04d.raw", this_frame);
     yframe = fopen(filename, "wb");
     for (i = 0; i < frame->uv_height; i++)
         fwrite(frame->v_buffer + i * frame->uv_stride, frame->uv_width, 1, yframe);
     fclose(yframe);
 }
 #endif
 /* return of 0 means drop frame */
 /* Function to test for conditions that indeicate we should loop
  * back and recode a frame.
  */
 static int recode_loop_test( VP8_COMP *cpi,
                               int high_limit, int low_limit,
                               int q, int maxq, int minq )
 {
     int force_recode = 0;
     VP8_COMMON *cm = &cpi->common;
     /* Is frame recode allowed at all
      * Yes if either recode mode 1 is selected or mode two is selcted
      * and the frame is a key frame. golden frame or alt_ref_frame
      */
     if ( (cpi->sf.recode_loop == 1) ||
          ( (cpi->sf.recode_loop == 2) &&
            ( (cm->frame_type == KEY_FRAME) ||
              cm->refresh_golden_frame ||
              cm->refresh_alt_ref_frame ) ) )
     {
         /* General over and under shoot tests */
         if ( ((cpi->projected_frame_size > high_limit) && (q < maxq)) ||
              ((cpi->projected_frame_size < low_limit) && (q > minq)) )
         {
             force_recode = 1;
         }
         /* Special Constrained quality tests */
         else if (cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY)
         {
             /* Undershoot and below auto cq level */
             if ( (q > cpi->cq_target_quality) &&
                  (cpi->projected_frame_size <
                      ((cpi->this_frame_target * 7) >> 3)))
             {
                 force_recode = 1;
             }
             /* Severe undershoot and between auto and user cq level */
             else if ( (q > cpi->oxcf.cq_level) &&
                       (cpi->projected_frame_size < cpi->min_frame_bandwidth) &&
                       (cpi->active_best_quality > cpi->oxcf.cq_level))
             {
                 force_recode = 1;
                 cpi->active_best_quality = cpi->oxcf.cq_level;
             }
         }
     }
     return force_recode;
 }
 static void update_reference_frames(VP8_COMP *cpi)
 {
     VP8_COMMON *cm = &cpi->common;
     YV12_BUFFER_CONFIG *yv12_fb = cm->yv12_fb;
     /* At this point the new frame has been encoded.
      * If any buffer copy / swapping is signaled it should be done here.
      */
     if (cm->frame_type == KEY_FRAME)
     {
         yv12_fb[cm->new_fb_idx].flags |= VP8_GOLD_FRAME | VP8_ALTR_FRAME ;
         yv12_fb[cm->gld_fb_idx].flags &= ~VP8_GOLD_FRAME;
         yv12_fb[cm->alt_fb_idx].flags &= ~VP8_ALTR_FRAME;
         cm->alt_fb_idx = cm->gld_fb_idx = cm->new_fb_idx;
 #if CONFIG_MULTI_RES_ENCODING
         cpi->current_ref_frames[GOLDEN_FRAME] = cm->current_video_frame;
         cpi->current_ref_frames[ALTREF_FRAME] = cm->current_video_frame;
 #endif
     }
     else    /* For non key frames */
     {
         if (cm->refresh_alt_ref_frame)
         {
             assert(!cm->copy_buffer_to_arf);
             cm->yv12_fb[cm->new_fb_idx].flags |= VP8_ALTR_FRAME;
             cm->yv12_fb[cm->alt_fb_idx].flags &= ~VP8_ALTR_FRAME;
             cm->alt_fb_idx = cm->new_fb_idx;
 #if CONFIG_MULTI_RES_ENCODING
             cpi->current_ref_frames[ALTREF_FRAME] = cm->current_video_frame;
 #endif
         }
         else if (cm->copy_buffer_to_arf)
         {
             assert(!(cm->copy_buffer_to_arf & ~0x3));
             if (cm->copy_buffer_to_arf == 1)
             {
                 if(cm->alt_fb_idx != cm->lst_fb_idx)
                 {
                     yv12_fb[cm->lst_fb_idx].flags |= VP8_ALTR_FRAME;
                     yv12_fb[cm->alt_fb_idx].flags &= ~VP8_ALTR_FRAME;
                     cm->alt_fb_idx = cm->lst_fb_idx;
 #if CONFIG_MULTI_RES_ENCODING
                     cpi->current_ref_frames[ALTREF_FRAME] =
                         cpi->current_ref_frames[LAST_FRAME];
 #endif
                 }
             }
             else /* if (cm->copy_buffer_to_arf == 2) */
             {
                 if(cm->alt_fb_idx != cm->gld_fb_idx)
                 {
                     yv12_fb[cm->gld_fb_idx].flags |= VP8_ALTR_FRAME;
                     yv12_fb[cm->alt_fb_idx].flags &= ~VP8_ALTR_FRAME;
                     cm->alt_fb_idx = cm->gld_fb_idx;
 #if CONFIG_MULTI_RES_ENCODING
                     cpi->current_ref_frames[ALTREF_FRAME] =
                         cpi->current_ref_frames[GOLDEN_FRAME];
 #endif
                 }
             }
         }
         if (cm->refresh_golden_frame)
         {
             assert(!cm->copy_buffer_to_gf);
             cm->yv12_fb[cm->new_fb_idx].flags |= VP8_GOLD_FRAME;
             cm->yv12_fb[cm->gld_fb_idx].flags &= ~VP8_GOLD_FRAME;
             cm->gld_fb_idx = cm->new_fb_idx;
 #if CONFIG_MULTI_RES_ENCODING
             cpi->current_ref_frames[GOLDEN_FRAME] = cm->current_video_frame;
 #endif
         }
         else if (cm->copy_buffer_to_gf)
         {
             assert(!(cm->copy_buffer_to_arf & ~0x3));
             if (cm->copy_buffer_to_gf == 1)
             {
                 if(cm->gld_fb_idx != cm->lst_fb_idx)
                 {
                     yv12_fb[cm->lst_fb_idx].flags |= VP8_GOLD_FRAME;
                     yv12_fb[cm->gld_fb_idx].flags &= ~VP8_GOLD_FRAME;
                     cm->gld_fb_idx = cm->lst_fb_idx;
 #if CONFIG_MULTI_RES_ENCODING
                     cpi->current_ref_frames[GOLDEN_FRAME] =
                         cpi->current_ref_frames[LAST_FRAME];
 #endif
                 }
             }
             else /* if (cm->copy_buffer_to_gf == 2) */
             {
                 if(cm->alt_fb_idx != cm->gld_fb_idx)
                 {
                     yv12_fb[cm->alt_fb_idx].flags |= VP8_GOLD_FRAME;
                     yv12_fb[cm->gld_fb_idx].flags &= ~VP8_GOLD_FRAME;
                     cm->gld_fb_idx = cm->alt_fb_idx;
 #if CONFIG_MULTI_RES_ENCODING
                     cpi->current_ref_frames[GOLDEN_FRAME] =
                         cpi->current_ref_frames[ALTREF_FRAME];
 #endif
                 }
             }
         }
     }
     if (cm->refresh_last_frame)
     {
         cm->yv12_fb[cm->new_fb_idx].flags |= VP8_LAST_FRAME;
         cm->yv12_fb[cm->lst_fb_idx].flags &= ~VP8_LAST_FRAME;
         cm->lst_fb_idx = cm->new_fb_idx;
 #if CONFIG_MULTI_RES_ENCODING
         cpi->current_ref_frames[LAST_FRAME] = cm->current_video_frame;
 #endif
     }
 #if CONFIG_TEMPORAL_DENOISING
     if (cpi->oxcf.noise_sensitivity)
     {
         /* we shouldn't have to keep multiple copies as we know in advance which
          * buffer we should start - for now to get something up and running
          * I've chosen to copy the buffers
          */
         if (cm->frame_type == KEY_FRAME)
         {
             int i;
             vp8_yv12_copy_frame(
                     cpi->Source,
                     &cpi->denoiser.yv12_running_avg[LAST_FRAME]);
             vp8_yv12_extend_frame_borders(
                     &cpi->denoiser.yv12_running_avg[LAST_FRAME]);
             for (i = 2; i < MAX_REF_FRAMES - 1; i++)
                 vp8_yv12_copy_frame(
                         &cpi->denoiser.yv12_running_avg[LAST_FRAME],
                         &cpi->denoiser.yv12_running_avg[i]);
         }
         else /* For non key frames */
         {
             vp8_yv12_extend_frame_borders(
                     &cpi->denoiser.yv12_running_avg[INTRA_FRAME]);
             if (cm->refresh_alt_ref_frame || cm->copy_buffer_to_arf)
             {
                 vp8_yv12_copy_frame(
                         &cpi->denoiser.yv12_running_avg[INTRA_FRAME],
                         &cpi->denoiser.yv12_running_avg[ALTREF_FRAME]);
             }
             if (cm->refresh_golden_frame || cm->copy_buffer_to_gf)
             {
                 vp8_yv12_copy_frame(
                         &cpi->denoiser.yv12_running_avg[INTRA_FRAME],
                         &cpi->denoiser.yv12_running_avg[GOLDEN_FRAME]);
             }
             if(cm->refresh_last_frame)
             {
                 vp8_yv12_copy_frame(
                         &cpi->denoiser.yv12_running_avg[INTRA_FRAME],
                         &cpi->denoiser.yv12_running_avg[LAST_FRAME]);
             }
         }
     }
 #endif
 }
 void vp8_loopfilter_frame(VP8_COMP *cpi, VP8_COMMON *cm)
 {
     const FRAME_TYPE frame_type = cm->frame_type;
     if (cm->no_lpf)
     {
         cm->filter_level = 0;
     }
     else
     {
         struct vpx_usec_timer timer;
         vp8_clear_system_state();
         vpx_usec_timer_start(&timer);
         if (cpi->sf.auto_filter == 0)
             vp8cx_pick_filter_level_fast(cpi->Source, cpi);
         else
             vp8cx_pick_filter_level(cpi->Source, cpi);
         if (cm->filter_level > 0)
         {
             vp8cx_set_alt_lf_level(cpi, cm->filter_level);
         }
         vpx_usec_timer_mark(&timer);
         cpi->time_pick_lpf += vpx_usec_timer_elapsed(&timer);
     }
 #if CONFIG_MULTITHREAD
     if (cpi->b_multi_threaded)
         sem_post(&cpi->h_event_end_lpf); /* signal that we have set filter_level */
 #endif
     if (cm->filter_level > 0)
     {
         vp8_loop_filter_frame(cm, &cpi->mb.e_mbd, frame_type);
     }
     vp8_yv12_extend_frame_borders(cm->frame_to_show);
 }
 static void encode_frame_to_data_rate
 (
     VP8_COMP *cpi,
     unsigned long *size,
     unsigned char *dest,
     unsigned char* dest_end,
     unsigned int *frame_flags
 )
 {
     int Q;
     int frame_over_shoot_limit;
     int frame_under_shoot_limit;
     int Loop = 0;
     int loop_count;
     VP8_COMMON *cm = &cpi->common;
     int active_worst_qchanged = 0;
 #if !(CONFIG_REALTIME_ONLY)
     int q_low;
     int q_high;
     int zbin_oq_high;
     int zbin_oq_low = 0;
     int top_index;
     int bottom_index;
     int overshoot_seen = 0;
     int undershoot_seen = 0;
 #endif
     int drop_mark = (int)(cpi->oxcf.drop_frames_water_mark *
                           cpi->oxcf.optimal_buffer_level / 100);
     int drop_mark75 = drop_mark * 2 / 3;
     int drop_mark50 = drop_mark / 4;
     int drop_mark25 = drop_mark / 8;
     /* Clear down mmx registers to allow floating point in what follows */
     vp8_clear_system_state();
 #if CONFIG_MULTITHREAD
     /*  wait for the last picture loopfilter thread done */
     if (cpi->b_lpf_running)
     {
         sem_wait(&cpi->h_event_end_lpf);
         cpi->b_lpf_running = 0;
     }
 #endif
     if(cpi->force_next_frame_intra)
     {
         cm->frame_type = KEY_FRAME;  /* delayed intra frame */
         cpi->force_next_frame_intra = 0;
     }
     /* For an alt ref frame in 2 pass we skip the call to the second pass
      * function that sets the target bandwidth
      */
 #if !(CONFIG_REALTIME_ONLY)
     if (cpi->pass == 2)
     {
         if (cpi->common.refresh_alt_ref_frame)
         {
             /* Per frame bit target for the alt ref frame */
             cpi->per_frame_bandwidth = cpi->twopass.gf_bits;
             /* per second target bitrate */
             cpi->target_bandwidth = (int)(cpi->twopass.gf_bits *
                                           cpi->output_framerate);
         }
     }
     else
 #endif
         cpi->per_frame_bandwidth  = (int)(cpi->target_bandwidth / cpi->output_framerate);
     /* Default turn off buffer to buffer copying */
     cm->copy_buffer_to_gf = 0;
     cm->copy_buffer_to_arf = 0;
     /* Clear zbin over-quant value and mode boost values. */
     cpi->mb.zbin_over_quant = 0;
     cpi->mb.zbin_mode_boost = 0;
     /* Enable or disable mode based tweaking of the zbin
      * For 2 Pass Only used where GF/ARF prediction quality
      * is above a threshold
      */
     cpi->mb.zbin_mode_boost_enabled = 1;
     if (cpi->pass == 2)
     {
         if ( cpi->gfu_boost <= 400 )
         {
             cpi->mb.zbin_mode_boost_enabled = 0;
         }
     }
     /* Current default encoder behaviour for the altref sign bias */
     if (cpi->source_alt_ref_active)
         cpi->common.ref_frame_sign_bias[ALTREF_FRAME] = 1;
     else
         cpi->common.ref_frame_sign_bias[ALTREF_FRAME] = 0;
     /* Check to see if a key frame is signaled
      * For two pass with auto key frame enabled cm->frame_type may already
      * be set, but not for one pass.
      */
     if ((cm->current_video_frame == 0) ||
         (cm->frame_flags & FRAMEFLAGS_KEY) ||
         (cpi->oxcf.auto_key && (cpi->frames_since_key % cpi->key_frame_frequency == 0)))
     {
         /* Key frame from VFW/auto-keyframe/first frame */
         cm->frame_type = KEY_FRAME;
     }
 #if CONFIG_MULTI_RES_ENCODING
     /* In multi-resolution encoding, frame_type is decided by lowest-resolution
      * encoder. Same frame_type is adopted while encoding at other resolution.
      */
     if (cpi->oxcf.mr_encoder_id)
     {
         LOWER_RES_FRAME_INFO* low_res_frame_info
                         = (LOWER_RES_FRAME_INFO*)cpi->oxcf.mr_low_res_mode_info;
         cm->frame_type = low_res_frame_info->frame_type;
         if(cm->frame_type != KEY_FRAME)
         {
             cpi->mr_low_res_mv_avail = 1;
             cpi->mr_low_res_mv_avail &= !(low_res_frame_info->is_frame_dropped);
             if (cpi->ref_frame_flags & VP8_LAST_FRAME)
                 cpi->mr_low_res_mv_avail &= (cpi->current_ref_frames[LAST_FRAME]
                          == low_res_frame_info->low_res_ref_frames[LAST_FRAME]);
             if (cpi->ref_frame_flags & VP8_GOLD_FRAME)
                 cpi->mr_low_res_mv_avail &= (cpi->current_ref_frames[GOLDEN_FRAME]
                          == low_res_frame_info->low_res_ref_frames[GOLDEN_FRAME]);
             if (cpi->ref_frame_flags & VP8_ALTR_FRAME)
                 cpi->mr_low_res_mv_avail &= (cpi->current_ref_frames[ALTREF_FRAME]
                          == low_res_frame_info->low_res_ref_frames[ALTREF_FRAME]);
         }
     }
 #endif
     /* Set various flags etc to special state if it is a key frame */
     if (cm->frame_type == KEY_FRAME)
     {
         int i;
         // Set the loop filter deltas and segmentation map update
         setup_features(cpi);
         /* The alternate reference frame cannot be active for a key frame */
         cpi->source_alt_ref_active = 0;
         /* Reset the RD threshold multipliers to default of * 1 (128) */
         for (i = 0; i < MAX_MODES; i++)
         {
             cpi->mb.rd_thresh_mult[i] = 128;
         }
     }
 #if 0
     /* Experimental code for lagged compress and one pass
      * Initialise one_pass GF frames stats
      * Update stats used for GF selection
      */
     {
         cpi->one_pass_frame_index = cm->current_video_frame % MAX_LAG_BUFFERS;
         cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frames_so_far = 0;
         cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_intra_error = 0.0;
         cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_coded_error = 0.0;
         cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_pcnt_inter = 0.0;
         cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_pcnt_motion = 0.0;
         cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_mvr = 0.0;
         cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_mvr_abs = 0.0;
         cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_mvc = 0.0;
         cpi->one_pass_frame_stats[cpi->one_pass_frame_index ].frame_mvc_abs = 0.0;
     }
 #endif
     update_rd_ref_frame_probs(cpi);
     if (cpi->drop_frames_allowed)
     {
         /* The reset to decimation 0 is only done here for one pass.
          * Once it is set two pass leaves decimation on till the next kf.
          */
         if ((cpi->buffer_level > drop_mark) && (cpi->decimation_factor > 0))
             cpi->decimation_factor --;
         if (cpi->buffer_level > drop_mark75 && cpi->decimation_factor > 0)
             cpi->decimation_factor = 1;
         else if (cpi->buffer_level < drop_mark25 && (cpi->decimation_factor == 2 || cpi->decimation_factor == 3))
         {
             cpi->decimation_factor = 3;
         }
         else if (cpi->buffer_level < drop_mark50 && (cpi->decimation_factor == 1 || cpi->decimation_factor == 2))
         {
             cpi->decimation_factor = 2;
         }
         else if (cpi->buffer_level < drop_mark75 && (cpi->decimation_factor == 0 || cpi->decimation_factor == 1))
         {
             cpi->decimation_factor = 1;
         }
     }
     /* The following decimates the frame rate according to a regular
      * pattern (i.e. to 1/2 or 2/3 frame rate) This can be used to help
      * prevent buffer under-run in CBR mode. Alternatively it might be
      * desirable in some situations to drop frame rate but throw more bits
      * at each frame.
      *
      * Note that dropping a key frame can be problematic if spatial
      * resampling is also active
      */
     if (cpi->decimation_factor > 0)
     {
         switch (cpi->decimation_factor)
         {
         case 1:
             cpi->per_frame_bandwidth  = cpi->per_frame_bandwidth * 3 / 2;
             break;
         case 2:
             cpi->per_frame_bandwidth  = cpi->per_frame_bandwidth * 5 / 4;
             break;
         case 3:
             cpi->per_frame_bandwidth  = cpi->per_frame_bandwidth * 5 / 4;
             break;
         }
         /* Note that we should not throw out a key frame (especially when
          * spatial resampling is enabled).
          */
         if (cm->frame_type == KEY_FRAME)
         {
             cpi->decimation_count = cpi->decimation_factor;
         }
         else if (cpi->decimation_count > 0)
         {
             cpi->decimation_count --;
             cpi->bits_off_target += cpi->av_per_frame_bandwidth;
             if (cpi->bits_off_target > cpi->oxcf.maximum_buffer_size)
                 cpi->bits_off_target = cpi->oxcf.maximum_buffer_size;
 #if CONFIG_MULTI_RES_ENCODING
             vp8_store_drop_frame_info(cpi);
 #endif
             cm->current_video_frame++;
             cpi->frames_since_key++;
             // We advance the temporal pattern for dropped frames.
             cpi->temporal_pattern_counter++;
 #if CONFIG_INTERNAL_STATS
             cpi->count ++;
 #endif
             cpi->buffer_level = cpi->bits_off_target;
             if (cpi->oxcf.number_of_layers > 1)
             {
                 unsigned int i;
                 /* Propagate bits saved by dropping the frame to higher
                  * layers
                  */
                 for (i=cpi->current_layer+1; i<cpi->oxcf.number_of_layers; i++)
                 {
                     LAYER_CONTEXT *lc = &cpi->layer_context[i];
                     lc->bits_off_target += (int)(lc->target_bandwidth /
                                                  lc->framerate);
                     if (lc->bits_off_target > lc->maximum_buffer_size)
                         lc->bits_off_target = lc->maximum_buffer_size;
                     lc->buffer_level = lc->bits_off_target;
                 }
             }
             return;
         }
         else
             cpi->decimation_count = cpi->decimation_factor;
     }
     else
         cpi->decimation_count = 0;
     /* Decide how big to make the frame */
     if (!vp8_pick_frame_size(cpi))
     {
         /*TODO: 2 drop_frame and return code could be put together. */
 #if CONFIG_MULTI_RES_ENCODING
         vp8_store_drop_frame_info(cpi);
 #endif
         cm->current_video_frame++;
         cpi->frames_since_key++;
         // We advance the temporal pattern for dropped frames.
         cpi->temporal_pattern_counter++;
         return;
     }
     /* Reduce active_worst_allowed_q for CBR if our buffer is getting too full.
      * This has a knock on effect on active best quality as well.
      * For CBR if the buffer reaches its maximum level then we can no longer
      * save up bits for later frames so we might as well use them up
      * on the current frame.
      */
     if ((cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER) &&
         (cpi->buffer_level >= cpi->oxcf.optimal_buffer_level) && cpi->buffered_mode)
     {
         /* Max adjustment is 1/4 */
         int Adjustment = cpi->active_worst_quality / 4;
         if (Adjustment)
         {
             int buff_lvl_step;
             if (cpi->buffer_level < cpi->oxcf.maximum_buffer_size)
             {
                 buff_lvl_step = (int)
                                 ((cpi->oxcf.maximum_buffer_size -
                                   cpi->oxcf.optimal_buffer_level) /
                                   Adjustment);
                 if (buff_lvl_step)
                     Adjustment = (int)
                                  ((cpi->buffer_level -
                                  cpi->oxcf.optimal_buffer_level) /
                                  buff_lvl_step);
                 else
                     Adjustment = 0;
             }
             cpi->active_worst_quality -= Adjustment;
             if(cpi->active_worst_quality < cpi->active_best_quality)
                 cpi->active_worst_quality = cpi->active_best_quality;
         }
     }
     /* Set an active best quality and if necessary active worst quality
      * There is some odd behavior for one pass here that needs attention.
      */
     if ( (cpi->pass == 2) || (cpi->ni_frames > 150))
     {
         vp8_clear_system_state();
         Q = cpi->active_worst_quality;
         if ( cm->frame_type == KEY_FRAME )
         {
             if ( cpi->pass == 2 )
             {
                 if (cpi->gfu_boost > 600)
                    cpi->active_best_quality = kf_low_motion_minq[Q];
                 else
                    cpi->active_best_quality = kf_high_motion_minq[Q];
                 /* Special case for key frames forced because we have reached
                  * the maximum key frame interval. Here force the Q to a range
                  * based on the ambient Q to reduce the risk of popping
                  */
                 if ( cpi->this_key_frame_forced )
                 {
                     if ( cpi->active_best_quality > cpi->avg_frame_qindex * 7/8)
                         cpi->active_best_quality = cpi->avg_frame_qindex * 7/8;
                     else if ( cpi->active_best_quality < cpi->avg_frame_qindex >> 2 )
                         cpi->active_best_quality = cpi->avg_frame_qindex >> 2;
                 }
             }
             /* One pass more conservative */
             else
                cpi->active_best_quality = kf_high_motion_minq[Q];
         }
         else if (cpi->oxcf.number_of_layers==1 &&
                 (cm->refresh_golden_frame || cpi->common.refresh_alt_ref_frame))
         {
             /* Use the lower of cpi->active_worst_quality and recent
              * average Q as basis for GF/ARF Q limit unless last frame was
              * a key frame.
              */
             if ( (cpi->frames_since_key > 1) &&
                (cpi->avg_frame_qindex < cpi->active_worst_quality) )
             {
                 Q = cpi->avg_frame_qindex;
             }
             /* For constrained quality dont allow Q less than the cq level */
             if ( (cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY) &&
                  (Q < cpi->cq_target_quality) )
             {
                 Q = cpi->cq_target_quality;
             }
             if ( cpi->pass == 2 )
             {
                 if ( cpi->gfu_boost > 1000 )
                     cpi->active_best_quality = gf_low_motion_minq[Q];
                 else if ( cpi->gfu_boost < 400 )
                     cpi->active_best_quality = gf_high_motion_minq[Q];
                 else
                     cpi->active_best_quality = gf_mid_motion_minq[Q];
                 /* Constrained quality use slightly lower active best. */
                 if ( cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY )
                 {
                     cpi->active_best_quality =
                         cpi->active_best_quality * 15/16;
                 }
             }
             /* One pass more conservative */
             else
                 cpi->active_best_quality = gf_high_motion_minq[Q];
         }
         else
         {
             cpi->active_best_quality = inter_minq[Q];
             /* For the constant/constrained quality mode we dont want
              * q to fall below the cq level.
              */
             if ((cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY) &&
                 (cpi->active_best_quality < cpi->cq_target_quality) )
             {
                 /* If we are strongly undershooting the target rate in the last
                  * frames then use the user passed in cq value not the auto
                  * cq value.
                  */
                 if ( cpi->rolling_actual_bits < cpi->min_frame_bandwidth )
                     cpi->active_best_quality = cpi->oxcf.cq_level;
                 else
                     cpi->active_best_quality = cpi->cq_target_quality;
             }
         }
         /* If CBR and the buffer is as full then it is reasonable to allow
          * higher quality on the frames to prevent bits just going to waste.
          */
         if (cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER)
         {
             /* Note that the use of >= here elliminates the risk of a devide
              * by 0 error in the else if clause
              */
             if (cpi->buffer_level >= cpi->oxcf.maximum_buffer_size)
                 cpi->active_best_quality = cpi->best_quality;
             else if (cpi->buffer_level > cpi->oxcf.optimal_buffer_level)
             {
                 int Fraction = (int)
                   (((cpi->buffer_level - cpi->oxcf.optimal_buffer_level) * 128)
                   / (cpi->oxcf.maximum_buffer_size -
                   cpi->oxcf.optimal_buffer_level));
                 int min_qadjustment = ((cpi->active_best_quality -
                                         cpi->best_quality) * Fraction) / 128;
                 cpi->active_best_quality -= min_qadjustment;
             }
         }
     }
     /* Make sure constrained quality mode limits are adhered to for the first
      * few frames of one pass encodes
      */
     else if (cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY)
     {
         if ( (cm->frame_type == KEY_FRAME) ||
              cm->refresh_golden_frame || cpi->common.refresh_alt_ref_frame )
         {
              cpi->active_best_quality = cpi->best_quality;
         }
         else if (cpi->active_best_quality < cpi->cq_target_quality)
         {
             cpi->active_best_quality = cpi->cq_target_quality;
         }
     }
     /* Clip the active best and worst quality values to limits */
     if (cpi->active_worst_quality > cpi->worst_quality)
         cpi->active_worst_quality = cpi->worst_quality;
     if (cpi->active_best_quality < cpi->best_quality)
         cpi->active_best_quality = cpi->best_quality;
     if ( cpi->active_worst_quality < cpi->active_best_quality )
         cpi->active_worst_quality = cpi->active_best_quality;
     /* Determine initial Q to try */
     Q = vp8_regulate_q(cpi, cpi->this_frame_target);
 #if !(CONFIG_REALTIME_ONLY)
     /* Set highest allowed value for Zbin over quant */
     if (cm->frame_type == KEY_FRAME)
         zbin_oq_high = 0;
     else if ((cpi->oxcf.number_of_layers == 1) && ((cm->refresh_alt_ref_frame ||
               (cm->refresh_golden_frame && !cpi->source_alt_ref_active))))
     {
           zbin_oq_high = 16;
     }
     else
         zbin_oq_high = ZBIN_OQ_MAX;
 #endif
     /* Setup background Q adjustment for error resilient mode.
      * For multi-layer encodes only enable this for the base layer.
      */
     if (cpi->cyclic_refresh_mode_enabled)
     {
       if (cpi->current_layer==0)
         cyclic_background_refresh(cpi, Q, 0);
       else
         disable_segmentation(cpi);
     }
     vp8_compute_frame_size_bounds(cpi, &frame_under_shoot_limit, &frame_over_shoot_limit);
 #if !(CONFIG_REALTIME_ONLY)
     /* Limit Q range for the adaptive loop. */
     bottom_index = cpi->active_best_quality;
     top_index    = cpi->active_worst_quality;
     q_low  = cpi->active_best_quality;
     q_high = cpi->active_worst_quality;
 #endif
     vp8_save_coding_context(cpi);
     loop_count = 0;
     scale_and_extend_source(cpi->un_scaled_source, cpi);
 #if !(CONFIG_REALTIME_ONLY) && CONFIG_POSTPROC && !(CONFIG_TEMPORAL_DENOISING)
     if (cpi->oxcf.noise_sensitivity > 0)
     {
         unsigned char *src;
         int l = 0;
         switch (cpi->oxcf.noise_sensitivity)
         {
         case 1:
             l = 20;
             break;
         case 2:
             l = 40;
             break;
         case 3:
             l = 60;
             break;
         case 4:
             l = 80;
             break;
         case 5:
             l = 100;
             break;
         case 6:
             l = 150;
             break;
         }
         if (cm->frame_type == KEY_FRAME)
         {
             vp8_de_noise(cm, cpi->Source, cpi->Source, l , 1,  0);
         }
         else
         {
             vp8_de_noise(cm, cpi->Source, cpi->Source, l , 1,  0);
             src = cpi->Source->y_buffer;
             if (cpi->Source->y_stride < 0)
             {
                 src += cpi->Source->y_stride * (cpi->Source->y_height - 1);
             }
         }
     }
 #endif
 #ifdef OUTPUT_YUV_SRC
     vp8_write_yuv_frame(cpi->Source);
 #endif
     do
     {
         vp8_clear_system_state();
         vp8_set_quantizer(cpi, Q);
         /* setup skip prob for costing in mode/mv decision */
         if (cpi->common.mb_no_coeff_skip)
         {
             cpi->prob_skip_false = cpi->base_skip_false_prob[Q];
             if (cm->frame_type != KEY_FRAME)
             {
                 if (cpi->common.refresh_alt_ref_frame)
                 {
                     if (cpi->last_skip_false_probs[2] != 0)
                         cpi->prob_skip_false = cpi->last_skip_false_probs[2];
                     /*
                                         if(cpi->last_skip_false_probs[2]!=0 && abs(Q- cpi->last_skip_probs_q[2])<=16 )
                        cpi->prob_skip_false = cpi->last_skip_false_probs[2];
                                         else if (cpi->last_skip_false_probs[2]!=0)
                        cpi->prob_skip_false = (cpi->last_skip_false_probs[2]  + cpi->prob_skip_false ) / 2;
                        */
                 }
                 else if (cpi->common.refresh_golden_frame)
                 {
                     if (cpi->last_skip_false_probs[1] != 0)
                         cpi->prob_skip_false = cpi->last_skip_false_probs[1];
                     /*
                                         if(cpi->last_skip_false_probs[1]!=0 && abs(Q- cpi->last_skip_probs_q[1])<=16 )
                        cpi->prob_skip_false = cpi->last_skip_false_probs[1];
                                         else if (cpi->last_skip_false_probs[1]!=0)
                        cpi->prob_skip_false = (cpi->last_skip_false_probs[1]  + cpi->prob_skip_false ) / 2;
                        */
                 }
                 else
                 {
                     if (cpi->last_skip_false_probs[0] != 0)
                         cpi->prob_skip_false = cpi->last_skip_false_probs[0];
                     /*
                     if(cpi->last_skip_false_probs[0]!=0 && abs(Q- cpi->last_skip_probs_q[0])<=16 )
                         cpi->prob_skip_false = cpi->last_skip_false_probs[0];
                     else if(cpi->last_skip_false_probs[0]!=0)
                         cpi->prob_skip_false = (cpi->last_skip_false_probs[0]  + cpi->prob_skip_false ) / 2;
                         */
                 }
                 /* as this is for cost estimate, let's make sure it does not
                  * go extreme eitehr way
                  */
                 if (cpi->prob_skip_false < 5)
                     cpi->prob_skip_false = 5;
                 if (cpi->prob_skip_false > 250)
                     cpi->prob_skip_false = 250;
                 if (cpi->oxcf.number_of_layers == 1 && cpi->is_src_frame_alt_ref)
                     cpi->prob_skip_false = 1;
             }
 #if 0
             if (cpi->pass != 1)
             {
                 FILE *f = fopen("skip.stt", "a");
                 fprintf(f, "%d, %d, %4d ", cpi->common.refresh_golden_frame, cpi->common.refresh_alt_ref_frame, cpi->prob_skip_false);
                 fclose(f);
             }
 #endif
         }
         if (cm->frame_type == KEY_FRAME)
         {
             if(resize_key_frame(cpi))
             {
               /* If the frame size has changed, need to reset Q, quantizer,
                * and background refresh.
                */
               Q = vp8_regulate_q(cpi, cpi->this_frame_target);
               if (cpi->cyclic_refresh_mode_enabled)
               {
                 if (cpi->current_layer==0)
                   cyclic_background_refresh(cpi, Q, 0);
                 else
                   disable_segmentation(cpi);
               }
               vp8_set_quantizer(cpi, Q);
             }
             vp8_setup_key_frame(cpi);
         }
 #if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING
         {
             if(cpi->oxcf.error_resilient_mode)
                 cm->refresh_entropy_probs = 0;
             if (cpi->oxcf.error_resilient_mode & VPX_ERROR_RESILIENT_PARTITIONS)
             {
                 if (cm->frame_type == KEY_FRAME)
                     cm->refresh_entropy_probs = 1;
             }
             if (cm->refresh_entropy_probs == 0)
             {
                 /* save a copy for later refresh */
                 vpx_memcpy(&cm->lfc, &cm->fc, sizeof(cm->fc));
             }
             vp8_update_coef_context(cpi);
             vp8_update_coef_probs(cpi);
             /* transform / motion compensation build reconstruction frame
              * +pack coef partitions
              */
             vp8_encode_frame(cpi);
             /* cpi->projected_frame_size is not needed for RT mode */
         }
 #else
         /* transform / motion compensation build reconstruction frame */
         vp8_encode_frame(cpi);
         cpi->projected_frame_size -= vp8_estimate_entropy_savings(cpi);
         cpi->projected_frame_size = (cpi->projected_frame_size > 0) ? cpi->projected_frame_size : 0;
 #endif
         vp8_clear_system_state();
         /* Test to see if the stats generated for this frame indicate that
          * we should have coded a key frame (assuming that we didn't)!
          */
         if (cpi->pass != 2 && cpi->oxcf.auto_key && cm->frame_type != KEY_FRAME
             && cpi->compressor_speed != 2)
         {
 #if !(CONFIG_REALTIME_ONLY)
             if (decide_key_frame(cpi))
             {
                 /* Reset all our sizing numbers and recode */
                 cm->frame_type = KEY_FRAME;
                 vp8_pick_frame_size(cpi);
                 /* Clear the Alt reference frame active flag when we have
                  * a key frame
                  */
                 cpi->source_alt_ref_active = 0;
                 // Set the loop filter deltas and segmentation map update
                 setup_features(cpi);
                 vp8_restore_coding_context(cpi);
                 Q = vp8_regulate_q(cpi, cpi->this_frame_target);
                 vp8_compute_frame_size_bounds(cpi, &frame_under_shoot_limit, &frame_over_shoot_limit);
                 /* Limit Q range for the adaptive loop. */
                 bottom_index = cpi->active_best_quality;
                 top_index    = cpi->active_worst_quality;
                 q_low  = cpi->active_best_quality;
                 q_high = cpi->active_worst_quality;
                 loop_count++;
                 Loop = 1;
                 continue;
             }
 #endif
         }
         vp8_clear_system_state();
         if (frame_over_shoot_limit == 0)
             frame_over_shoot_limit = 1;
         /* Are we are overshooting and up against the limit of active max Q. */
         if (((cpi->pass != 2) || (cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER)) &&
             (Q == cpi->active_worst_quality)                     &&
             (cpi->active_worst_quality < cpi->worst_quality)      &&
             (cpi->projected_frame_size > frame_over_shoot_limit))
         {
             int over_size_percent = ((cpi->projected_frame_size - frame_over_shoot_limit) * 100) / frame_over_shoot_limit;
             /* If so is there any scope for relaxing it */
             while ((cpi->active_worst_quality < cpi->worst_quality) && (over_size_percent > 0))
             {
                 cpi->active_worst_quality++;
                 /* Assume 1 qstep = about 4% on frame size. */
                 over_size_percent = (int)(over_size_percent * 0.96);
             }
 #if !(CONFIG_REALTIME_ONLY)
             top_index = cpi->active_worst_quality;
 #endif
             /* If we have updated the active max Q do not call
              * vp8_update_rate_correction_factors() this loop.
              */
             active_worst_qchanged = 1;
         }
         else
             active_worst_qchanged = 0;
 #if !(CONFIG_REALTIME_ONLY)
         /* Special case handling for forced key frames */
         if ( (cm->frame_type == KEY_FRAME) && cpi->this_key_frame_forced )
         {
             int last_q = Q;
             int kf_err = vp8_calc_ss_err(cpi->Source,
                                          &cm->yv12_fb[cm->new_fb_idx]);
             /* The key frame is not good enough */
             if ( kf_err > ((cpi->ambient_err * 7) >> 3) )
             {
                 /* Lower q_high */
                 q_high = (Q > q_low) ? (Q - 1) : q_low;
                 /* Adjust Q */
                 Q = (q_high + q_low) >> 1;
             }
             /* The key frame is much better than the previous frame */
             else if ( kf_err < (cpi->ambient_err >> 1) )
             {
                 /* Raise q_low */
                 q_low = (Q < q_high) ? (Q + 1) : q_high;
                 /* Adjust Q */
                 Q = (q_high + q_low + 1) >> 1;
             }
             /* Clamp Q to upper and lower limits: */
             if (Q > q_high)
                 Q = q_high;
             else if (Q < q_low)
                 Q = q_low;
             Loop = Q != last_q;
         }
         /* Is the projected frame size out of range and are we allowed
          * to attempt to recode.
          */
         else if ( recode_loop_test( cpi,
                                frame_over_shoot_limit, frame_under_shoot_limit,
                                Q, top_index, bottom_index ) )
         {
             int last_q = Q;
             int Retries = 0;
             /* Frame size out of permitted range. Update correction factor
              * & compute new Q to try...
              */
             /* Frame is too large */
             if (cpi->projected_frame_size > cpi->this_frame_target)
             {
                 /* Raise Qlow as to at least the current value */
                 q_low = (Q < q_high) ? (Q + 1) : q_high;
                 /* If we are using over quant do the same for zbin_oq_low */
                 if (cpi->mb.zbin_over_quant > 0)
                     zbin_oq_low = (cpi->mb.zbin_over_quant < zbin_oq_high) ?
                         (cpi->mb.zbin_over_quant + 1) : zbin_oq_high;
                 if (undershoot_seen)
                 {
                     /* Update rate_correction_factor unless
                      * cpi->active_worst_quality has changed.
                      */
                     if (!active_worst_qchanged)
                         vp8_update_rate_correction_factors(cpi, 1);
                     Q = (q_high + q_low + 1) / 2;
                     /* Adjust cpi->zbin_over_quant (only allowed when Q
                      * is max)
                      */
                     if (Q < MAXQ)
                         cpi->mb.zbin_over_quant = 0;
                     else
                     {
                         zbin_oq_low = (cpi->mb.zbin_over_quant < zbin_oq_high) ?
                             (cpi->mb.zbin_over_quant + 1) : zbin_oq_high;
                         cpi->mb.zbin_over_quant =
                             (zbin_oq_high + zbin_oq_low) / 2;
                     }
                 }
                 else
                 {
                     /* Update rate_correction_factor unless
                      * cpi->active_worst_quality has changed.
                      */
                     if (!active_worst_qchanged)
                         vp8_update_rate_correction_factors(cpi, 0);
                     Q = vp8_regulate_q(cpi, cpi->this_frame_target);
                     while (((Q < q_low) ||
                         (cpi->mb.zbin_over_quant < zbin_oq_low)) &&
                         (Retries < 10))
                     {
                         vp8_update_rate_correction_factors(cpi, 0);
                         Q = vp8_regulate_q(cpi, cpi->this_frame_target);
                         Retries ++;
                     }
                 }
                 overshoot_seen = 1;
             }
             /* Frame is too small */
             else
             {
                 if (cpi->mb.zbin_over_quant == 0)
                     /* Lower q_high if not using over quant */
                     q_high = (Q > q_low) ? (Q - 1) : q_low;
                 else
                     /* else lower zbin_oq_high */
                     zbin_oq_high = (cpi->mb.zbin_over_quant > zbin_oq_low) ?
                         (cpi->mb.zbin_over_quant - 1) : zbin_oq_low;
                 if (overshoot_seen)
                 {
                     /* Update rate_correction_factor unless
                      * cpi->active_worst_quality has changed.
                      */
                     if (!active_worst_qchanged)
                         vp8_update_rate_correction_factors(cpi, 1);
                     Q = (q_high + q_low) / 2;
                     /* Adjust cpi->zbin_over_quant (only allowed when Q
                      * is max)
                      */
                     if (Q < MAXQ)
                         cpi->mb.zbin_over_quant = 0;
                     else
                         cpi->mb.zbin_over_quant =
                             (zbin_oq_high + zbin_oq_low) / 2;
                 }
                 else
                 {
                     /* Update rate_correction_factor unless
                      * cpi->active_worst_quality has changed.
                      */
                     if (!active_worst_qchanged)
                         vp8_update_rate_correction_factors(cpi, 0);
                     Q = vp8_regulate_q(cpi, cpi->this_frame_target);
                     /* Special case reset for qlow for constrained quality.
                      * This should only trigger where there is very substantial
                      * undershoot on a frame and the auto cq level is above
                      * the user passsed in value.
                      */
                     if ( (cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY) &&
                          (Q < q_low) )
                     {
                         q_low = Q;
                     }
                     while (((Q > q_high) ||
                         (cpi->mb.zbin_over_quant > zbin_oq_high)) &&
                         (Retries < 10))
                     {
                         vp8_update_rate_correction_factors(cpi, 0);
                         Q = vp8_regulate_q(cpi, cpi->this_frame_target);
                         Retries ++;
                     }
                 }
                 undershoot_seen = 1;
             }
             /* Clamp Q to upper and lower limits: */
             if (Q > q_high)
                 Q = q_high;
             else if (Q < q_low)
                 Q = q_low;
             /* Clamp cpi->zbin_over_quant */
             cpi->mb.zbin_over_quant = (cpi->mb.zbin_over_quant < zbin_oq_low) ?
                 zbin_oq_low : (cpi->mb.zbin_over_quant > zbin_oq_high) ?
                     zbin_oq_high : cpi->mb.zbin_over_quant;
             Loop = Q != last_q;
         }
         else
 #endif
             Loop = 0;
         if (cpi->is_src_frame_alt_ref)
             Loop = 0;
         if (Loop == 1)
         {
             vp8_restore_coding_context(cpi);
             loop_count++;
 #if CONFIG_INTERNAL_STATS
             cpi->tot_recode_hits++;
 #endif
         }
     }
     while (Loop == 1);
 #if 0
     /* Experimental code for lagged and one pass
      * Update stats used for one pass GF selection
      */
     {
         cpi->one_pass_frame_stats[cpi->one_pass_frame_index].frame_coded_error = (double)cpi->prediction_error;
         cpi->one_pass_frame_stats[cpi->one_pass_frame_index].frame_intra_error = (double)cpi->intra_error;
         cpi->one_pass_frame_stats[cpi->one_pass_frame_index].frame_pcnt_inter = (double)(100 - cpi->this_frame_percent_intra) / 100.0;
     }
 #endif
     /* Special case code to reduce pulsing when key frames are forced at a
      * fixed interval. Note the reconstruction error if it is the frame before
      * the force key frame
      */
     if ( cpi->next_key_frame_forced && (cpi->twopass.frames_to_key == 0) )
     {
         cpi->ambient_err = vp8_calc_ss_err(cpi->Source,
                                            &cm->yv12_fb[cm->new_fb_idx]);
     }
     /* This frame's MVs are saved and will be used in next frame's MV predictor.
      * Last frame has one more line(add to bottom) and one more column(add to
      * right) than cm->mip. The edge elements are initialized to 0.
      */
 #if CONFIG_MULTI_RES_ENCODING
     if(!cpi->oxcf.mr_encoder_id && cm->show_frame)
 #else
     if(cm->show_frame)   /* do not save for altref frame */
 #endif
     {
         int mb_row;
         int mb_col;
         /* Point to beginning of allocated MODE_INFO arrays. */
         MODE_INFO *tmp = cm->mip;
         if(cm->frame_type != KEY_FRAME)
         {
             for (mb_row = 0; mb_row < cm->mb_rows+1; mb_row ++)
             {
                 for (mb_col = 0; mb_col < cm->mb_cols+1; mb_col ++)
                 {
                     if(tmp->mbmi.ref_frame != INTRA_FRAME)
                         cpi->lfmv[mb_col + mb_row*(cm->mode_info_stride+1)].as_int = tmp->mbmi.mv.as_int;
                     cpi->lf_ref_frame_sign_bias[mb_col + mb_row*(cm->mode_info_stride+1)] = cm->ref_frame_sign_bias[tmp->mbmi.ref_frame];
                     cpi->lf_ref_frame[mb_col + mb_row*(cm->mode_info_stride+1)] = tmp->mbmi.ref_frame;
                     tmp++;
                 }
             }
         }
     }
     /* Count last ref frame 0,0 usage on current encoded frame. */
     {
         int mb_row;
         int mb_col;
         /* Point to beginning of MODE_INFO arrays. */
         MODE_INFO *tmp = cm->mi;
         cpi->zeromv_count = 0;
         if(cm->frame_type != KEY_FRAME)
         {
             for (mb_row = 0; mb_row < cm->mb_rows; mb_row ++)
             {
                 for (mb_col = 0; mb_col < cm->mb_cols; mb_col ++)
                 {
                     if(tmp->mbmi.mode == ZEROMV)
                         cpi->zeromv_count++;
                     tmp++;
                 }
                 tmp++;
             }
         }
     }
 #if CONFIG_MULTI_RES_ENCODING
     vp8_cal_dissimilarity(cpi);
 #endif
     /* Update the GF useage maps.
      * This is done after completing the compression of a frame when all
      * modes etc. are finalized but before loop filter
      */
     if (cpi->oxcf.number_of_layers == 1)
         vp8_update_gf_useage_maps(cpi, cm, &cpi->mb);
     if (cm->frame_type == KEY_FRAME)
         cm->refresh_last_frame = 1;
 #if 0
     {
         FILE *f = fopen("gfactive.stt", "a");
         fprintf(f, "%8d %8d %8d %8d %8d\n", cm->current_video_frame, (100 * cpi->gf_active_count) / (cpi->common.mb_rows * cpi->common.mb_cols), cpi->this_iiratio, cpi->next_iiratio, cm->refresh_golden_frame);
         fclose(f);
     }
 #endif
     /* For inter frames the current default behavior is that when
      * cm->refresh_golden_frame is set we copy the old GF over to the ARF buffer
      * This is purely an encoder decision at present.
      */
     if (!cpi->oxcf.error_resilient_mode && cm->refresh_golden_frame)
         cm->copy_buffer_to_arf  = 2;
     else
         cm->copy_buffer_to_arf  = 0;
     cm->frame_to_show = &cm->yv12_fb[cm->new_fb_idx];
 #if CONFIG_MULTITHREAD
     if (cpi->b_multi_threaded)
     {
         /* start loopfilter in separate thread */
         sem_post(&cpi->h_event_start_lpf);
         cpi->b_lpf_running = 1;
     }
     else
 #endif
     {
         vp8_loopfilter_frame(cpi, cm);
     }
     update_reference_frames(cpi);
 #if !(CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING)
     if (cpi->oxcf.error_resilient_mode)
     {
         cm->refresh_entropy_probs = 0;
     }
 #endif
 #if CONFIG_MULTITHREAD
     /* wait that filter_level is picked so that we can continue with stream packing */
     if (cpi->b_multi_threaded)
         sem_wait(&cpi->h_event_end_lpf);
 #endif
     /* build the bitstream */
     vp8_pack_bitstream(cpi, dest, dest_end, size);
 #if CONFIG_MULTITHREAD
     /* if PSNR packets are generated we have to wait for the lpf */
     if (cpi->b_lpf_running && cpi->b_calculate_psnr)
     {
         sem_wait(&cpi->h_event_end_lpf);
         cpi->b_lpf_running = 0;
     }
 #endif
     /* Move storing frame_type out of the above loop since it is also
      * needed in motion search besides loopfilter */
     cm->last_frame_type = cm->frame_type;
     /* Update rate control heuristics */
     cpi->total_byte_count += (*size);
     cpi->projected_frame_size = (*size) << 3;
     if (cpi->oxcf.number_of_layers > 1)
     {
         unsigned int i;
         for (i=cpi->current_layer+1; i<cpi->oxcf.number_of_layers; i++)
           cpi->layer_context[i].total_byte_count += (*size);
     }
     if (!active_worst_qchanged)
         vp8_update_rate_correction_factors(cpi, 2);
     cpi->last_q[cm->frame_type] = cm->base_qindex;
     if (cm->frame_type == KEY_FRAME)
     {
         vp8_adjust_key_frame_context(cpi);
     }
     /* Keep a record of ambient average Q. */
     if (cm->frame_type != KEY_FRAME)
         cpi->avg_frame_qindex = (2 + 3 * cpi->avg_frame_qindex + cm->base_qindex) >> 2;
     /* Keep a record from which we can calculate the average Q excluding
      * GF updates and key frames
      */
     if ((cm->frame_type != KEY_FRAME) && ((cpi->oxcf.number_of_layers > 1) ||
         (!cm->refresh_golden_frame && !cm->refresh_alt_ref_frame)))
     {
         cpi->ni_frames++;
         /* Calculate the average Q for normal inter frames (not key or GFU
          * frames).
          */
         if ( cpi->pass == 2 )
         {
             cpi->ni_tot_qi += Q;
             cpi->ni_av_qi = (cpi->ni_tot_qi / cpi->ni_frames);
         }
         else
         {
             /* Damp value for first few frames */
             if (cpi->ni_frames > 150 )
             {
                 cpi->ni_tot_qi += Q;
                 cpi->ni_av_qi = (cpi->ni_tot_qi / cpi->ni_frames);
             }
             /* For one pass, early in the clip ... average the current frame Q
              * value with the worstq entered by the user as a dampening measure
              */
             else
             {
                 cpi->ni_tot_qi += Q;
                 cpi->ni_av_qi = ((cpi->ni_tot_qi / cpi->ni_frames) + cpi->worst_quality + 1) / 2;
             }
             /* If the average Q is higher than what was used in the last
              * frame (after going through the recode loop to keep the frame
              * size within range) then use the last frame value - 1. The -1
              * is designed to stop Q and hence the data rate, from
              * progressively falling away during difficult sections, but at
              * the same time reduce the number of itterations around the
              * recode loop.
              */
             if (Q > cpi->ni_av_qi)
                 cpi->ni_av_qi = Q - 1;
         }
     }
     /* Update the buffer level variable. */
     /* Non-viewable frames are a special case and are treated as pure overhead. */
     if ( !cm->show_frame )
         cpi->bits_off_target -= cpi->projected_frame_size;
     else
         cpi->bits_off_target += cpi->av_per_frame_bandwidth - cpi->projected_frame_size;
     /* Clip the buffer level to the maximum specified buffer size */
     if (cpi->bits_off_target > cpi->oxcf.maximum_buffer_size)
         cpi->bits_off_target = cpi->oxcf.maximum_buffer_size;
     /* Rolling monitors of whether we are over or underspending used to
      * help regulate min and Max Q in two pass.
      */
     cpi->rolling_target_bits = ((cpi->rolling_target_bits * 3) + cpi->this_frame_target + 2) / 4;
     cpi->rolling_actual_bits = ((cpi->rolling_actual_bits * 3) + cpi->projected_frame_size + 2) / 4;
     cpi->long_rolling_target_bits = ((cpi->long_rolling_target_bits * 31) + cpi->this_frame_target + 16) / 32;
     cpi->long_rolling_actual_bits = ((cpi->long_rolling_actual_bits * 31) + cpi->projected_frame_size + 16) / 32;
     /* Actual bits spent */
     cpi->total_actual_bits += cpi->projected_frame_size;
     /* Debug stats */
     cpi->total_target_vs_actual += (cpi->this_frame_target - cpi->projected_frame_size);
     cpi->buffer_level = cpi->bits_off_target;
     /* Propagate values to higher temporal layers */
     if (cpi->oxcf.number_of_layers > 1)
     {
         unsigned int i;
         for (i=cpi->current_layer+1; i<cpi->oxcf.number_of_layers; i++)
         {
             LAYER_CONTEXT *lc = &cpi->layer_context[i];
             int bits_off_for_this_layer =
                (int)(lc->target_bandwidth / lc->framerate -
                      cpi->projected_frame_size);
             lc->bits_off_target += bits_off_for_this_layer;
             /* Clip buffer level to maximum buffer size for the layer */
             if (lc->bits_off_target > lc->maximum_buffer_size)
                 lc->bits_off_target = lc->maximum_buffer_size;
             lc->total_actual_bits += cpi->projected_frame_size;
             lc->total_target_vs_actual += bits_off_for_this_layer;
             lc->buffer_level = lc->bits_off_target;
         }
     }
     /* Update bits left to the kf and gf groups to account for overshoot
      * or undershoot on these frames
      */
     if (cm->frame_type == KEY_FRAME)
     {
         cpi->twopass.kf_group_bits += cpi->this_frame_target - cpi->projected_frame_size;
         if (cpi->twopass.kf_group_bits < 0)
             cpi->twopass.kf_group_bits = 0 ;
     }
     else if (cm->refresh_golden_frame || cm->refresh_alt_ref_frame)
     {
         cpi->twopass.gf_group_bits += cpi->this_frame_target - cpi->projected_frame_size;
         if (cpi->twopass.gf_group_bits < 0)
             cpi->twopass.gf_group_bits = 0 ;
     }
     if (cm->frame_type != KEY_FRAME)
     {
         if (cpi->common.refresh_alt_ref_frame)
         {
             cpi->last_skip_false_probs[2] = cpi->prob_skip_false;
             cpi->last_skip_probs_q[2] = cm->base_qindex;
         }
         else if (cpi->common.refresh_golden_frame)
         {
             cpi->last_skip_false_probs[1] = cpi->prob_skip_false;
             cpi->last_skip_probs_q[1] = cm->base_qindex;
         }
         else
         {
             cpi->last_skip_false_probs[0] = cpi->prob_skip_false;
             cpi->last_skip_probs_q[0] = cm->base_qindex;
             /* update the baseline */
             cpi->base_skip_false_prob[cm->base_qindex] = cpi->prob_skip_false;
         }
     }
 #if 0 && CONFIG_INTERNAL_STATS
     {
         FILE *f = fopen("tmp.stt", "a");
         vp8_clear_system_state();
         if (cpi->twopass.total_left_stats.coded_error != 0.0)
             fprintf(f, "%10d %10d %10d %10d %10d %10d %10d %10d %10d %6d %6d"
                        "%6d %6d %6d %5d %5d %5d %8d %8.2f %10d %10.3f"
                        "%10.3f %8d\n",
                        cpi->common.current_video_frame, cpi->this_frame_target,
                        cpi->projected_frame_size,
                        (cpi->projected_frame_size - cpi->this_frame_target),
                        (int)cpi->total_target_vs_actual,
                        cpi->buffer_level,
                        (cpi->oxcf.starting_buffer_level-cpi->bits_off_target),
                        (int)cpi->total_actual_bits, cm->base_qindex,
                        cpi->active_best_quality, cpi->active_worst_quality,
                        cpi->ni_av_qi, cpi->cq_target_quality,
                        cpi->zbin_over_quant,
                        cm->refresh_golden_frame, cm->refresh_alt_ref_frame,
                        cm->frame_type, cpi->gfu_boost,
                        cpi->twopass.est_max_qcorrection_factor,
                        (int)cpi->twopass.bits_left,
                        cpi->twopass.total_left_stats.coded_error,
                        (double)cpi->twopass.bits_left /
                            cpi->twopass.total_left_stats.coded_error,
                        cpi->tot_recode_hits);
         else
             fprintf(f, "%10d %10d %10d %10d %10d %10d %10d %10d %10d %6d %6d"
                        "%6d %6d %6d %5d %5d %5d %8d %8.2f %10d %10.3f"
                        "%8d\n",
                        cpi->common.current_video_frame,
                        cpi->this_frame_target, cpi->projected_frame_size,
                        (cpi->projected_frame_size - cpi->this_frame_target),
                        (int)cpi->total_target_vs_actual,
                        cpi->buffer_level,
                        (cpi->oxcf.starting_buffer_level-cpi->bits_off_target),
                        (int)cpi->total_actual_bits, cm->base_qindex,
                        cpi->active_best_quality, cpi->active_worst_quality,
                        cpi->ni_av_qi, cpi->cq_target_quality,
                        cpi->zbin_over_quant,
                        cm->refresh_golden_frame, cm->refresh_alt_ref_frame,
                        cm->frame_type, cpi->gfu_boost,
                        cpi->twopass.est_max_qcorrection_factor,
                        (int)cpi->twopass.bits_left,
                        cpi->twopass.total_left_stats.coded_error,
                        cpi->tot_recode_hits);
         fclose(f);
         {
             FILE *fmodes = fopen("Modes.stt", "a");
             int i;
             fprintf(fmodes, "%6d:%1d:%1d:%1d ",
                         cpi->common.current_video_frame,
                         cm->frame_type, cm->refresh_golden_frame,
                         cm->refresh_alt_ref_frame);
             fprintf(fmodes, "\n");
             fclose(fmodes);
         }
     }
 #endif
     if (cm->refresh_golden_frame == 1)
         cm->frame_flags = cm->frame_flags | FRAMEFLAGS_GOLDEN;
     else
         cm->frame_flags = cm->frame_flags&~FRAMEFLAGS_GOLDEN;
     if (cm->refresh_alt_ref_frame == 1)
         cm->frame_flags = cm->frame_flags | FRAMEFLAGS_ALTREF;
     else
         cm->frame_flags = cm->frame_flags&~FRAMEFLAGS_ALTREF;
     if (cm->refresh_last_frame & cm->refresh_golden_frame)
         /* both refreshed */
         cpi->gold_is_last = 1;
     else if (cm->refresh_last_frame ^ cm->refresh_golden_frame)
         /* 1 refreshed but not the other */
         cpi->gold_is_last = 0;
     if (cm->refresh_last_frame & cm->refresh_alt_ref_frame)
         /* both refreshed */
         cpi->alt_is_last = 1;
     else if (cm->refresh_last_frame ^ cm->refresh_alt_ref_frame)
         /* 1 refreshed but not the other */
         cpi->alt_is_last = 0;
     if (cm->refresh_alt_ref_frame & cm->refresh_golden_frame)
         /* both refreshed */
         cpi->gold_is_alt = 1;
     else if (cm->refresh_alt_ref_frame ^ cm->refresh_golden_frame)
         /* 1 refreshed but not the other */
         cpi->gold_is_alt = 0;
     cpi->ref_frame_flags = VP8_ALTR_FRAME | VP8_GOLD_FRAME | VP8_LAST_FRAME;
     if (cpi->gold_is_last)
         cpi->ref_frame_flags &= ~VP8_GOLD_FRAME;
     if (cpi->alt_is_last)
         cpi->ref_frame_flags &= ~VP8_ALTR_FRAME;
     if (cpi->gold_is_alt)
         cpi->ref_frame_flags &= ~VP8_ALTR_FRAME;
     if (!cpi->oxcf.error_resilient_mode)
     {
         if (cpi->oxcf.play_alternate && cm->refresh_alt_ref_frame && (cm->frame_type != KEY_FRAME))
             /* Update the alternate reference frame stats as appropriate. */
             update_alt_ref_frame_stats(cpi);
         else
             /* Update the Golden frame stats as appropriate. */
             update_golden_frame_stats(cpi);
     }
     if (cm->frame_type == KEY_FRAME)
     {
         /* Tell the caller that the frame was coded as a key frame */
         *frame_flags = cm->frame_flags | FRAMEFLAGS_KEY;
         /* As this frame is a key frame  the next defaults to an inter frame. */
         cm->frame_type = INTER_FRAME;
         cpi->last_frame_percent_intra = 100;
     }
     else
     {
         *frame_flags = cm->frame_flags&~FRAMEFLAGS_KEY;
         cpi->last_frame_percent_intra = cpi->this_frame_percent_intra;
     }
     /* Clear the one shot update flags for segmentation map and mode/ref
      * loop filter deltas.
      */
     cpi->mb.e_mbd.update_mb_segmentation_map = 0;
     cpi->mb.e_mbd.update_mb_segmentation_data = 0;
     cpi->mb.e_mbd.mode_ref_lf_delta_update = 0;
     /* Dont increment frame counters if this was an altref buffer update
      * not a real frame
      */
     if (cm->show_frame)
     {
         cm->current_video_frame++;
         cpi->frames_since_key++;
         cpi->temporal_pattern_counter++;
     }
     /* reset to normal state now that we are done. */
 #if 0
     {
         char filename[512];
         FILE *recon_file;
         sprintf(filename, "enc%04d.yuv", (int) cm->current_video_frame);
         recon_file = fopen(filename, "wb");
         fwrite(cm->yv12_fb[cm->lst_fb_idx].buffer_alloc,
                cm->yv12_fb[cm->lst_fb_idx].frame_size, 1, recon_file);
         fclose(recon_file);
     }
 #endif
     /* DEBUG */
     /* vp8_write_yuv_frame("encoder_recon.yuv", cm->frame_to_show); */
 }
 #if !(CONFIG_REALTIME_ONLY)
 static void Pass2Encode(VP8_COMP *cpi, unsigned long *size, unsigned char *dest, unsigned char * dest_end, unsigned int *frame_flags)
 {
     if (!cpi->common.refresh_alt_ref_frame)
         vp8_second_pass(cpi);
     encode_frame_to_data_rate(cpi, size, dest, dest_end, frame_flags);
     cpi->twopass.bits_left -= 8 * *size;
     if (!cpi->common.refresh_alt_ref_frame)
     {
         double two_pass_min_rate = (double)(cpi->oxcf.target_bandwidth
             *cpi->oxcf.two_pass_vbrmin_section / 100);
         cpi->twopass.bits_left += (int64_t)(two_pass_min_rate / cpi->framerate);
     }
 }
 #endif
 /* For ARM NEON, d8-d15 are callee-saved registers, and need to be saved. */
 #if HAVE_NEON
 extern void vp8_push_neon(int64_t *store);
 extern void vp8_pop_neon(int64_t *store);
 #endif
 int vp8_receive_raw_frame(VP8_COMP *cpi, unsigned int frame_flags, YV12_BUFFER_CONFIG *sd, int64_t time_stamp, int64_t end_time)
 {
 #if HAVE_NEON
     int64_t store_reg[8];
 #if CONFIG_RUNTIME_CPU_DETECT
     VP8_COMMON            *cm = &cpi->common;
 #endif
 #endif
     struct vpx_usec_timer  timer;
     int                    res = 0;
 #if HAVE_NEON
 #if CONFIG_RUNTIME_CPU_DETECT
     if (cm->cpu_caps & HAS_NEON)
 #endif
     {
         vp8_push_neon(store_reg);
     }
 #endif
     vpx_usec_timer_start(&timer);
     /* Reinit the lookahead buffer if the frame size changes */
     if (sd->y_width != cpi->oxcf.Width || sd->y_height != cpi->oxcf.Height)
     {
         assert(cpi->oxcf.lag_in_frames < 2);
         dealloc_raw_frame_buffers(cpi);
         alloc_raw_frame_buffers(cpi);
     }
     if(vp8_lookahead_push(cpi->lookahead, sd, time_stamp, end_time,
                           frame_flags, cpi->active_map_enabled ? cpi->active_map : NULL))
         res = -1;
     vpx_usec_timer_mark(&timer);
     cpi->time_receive_data += vpx_usec_timer_elapsed(&timer);
 #if HAVE_NEON
 #if CONFIG_RUNTIME_CPU_DETECT
     if (cm->cpu_caps & HAS_NEON)
 #endif
     {
         vp8_pop_neon(store_reg);
     }
 #endif
     return res;
 }
 static int frame_is_reference(const VP8_COMP *cpi)
 {
     const VP8_COMMON *cm = &cpi->common;
     const MACROBLOCKD *xd = &cpi->mb.e_mbd;
     return cm->frame_type == KEY_FRAME || cm->refresh_last_frame
            || cm->refresh_golden_frame || cm->refresh_alt_ref_frame
            || cm->copy_buffer_to_gf || cm->copy_buffer_to_arf
            || cm->refresh_entropy_probs
            || xd->mode_ref_lf_delta_update
            || xd->update_mb_segmentation_map || xd->update_mb_segmentation_data;
 }
 int vp8_get_compressed_data(VP8_COMP *cpi, unsigned int *frame_flags, unsigned long *size, unsigned char *dest, unsigned char *dest_end, int64_t *time_stamp, int64_t *time_end, int flush)
 {
 #if HAVE_NEON
     int64_t store_reg[8];
 #endif
     VP8_COMMON *cm;
     struct vpx_usec_timer  tsctimer;
     struct vpx_usec_timer  ticktimer;
     struct vpx_usec_timer  cmptimer;
     YV12_BUFFER_CONFIG    *force_src_buffer = NULL;
     if (!cpi)
         return -1;
     cm = &cpi->common;
     if (setjmp(cpi->common.error.jmp))
     {
         cpi->common.error.setjmp = 0;
         return VPX_CODEC_CORRUPT_FRAME;
     }
     cpi->common.error.setjmp = 1;
 #if HAVE_NEON
 #if CONFIG_RUNTIME_CPU_DETECT
     if (cm->cpu_caps & HAS_NEON)
 #endif
     {
         vp8_push_neon(store_reg);
     }
 #endif
     vpx_usec_timer_start(&cmptimer);
     cpi->source = NULL;
 #if !(CONFIG_REALTIME_ONLY)
     /* Should we code an alternate reference frame */
     if (cpi->oxcf.error_resilient_mode == 0 &&
         cpi->oxcf.play_alternate &&
         cpi->source_alt_ref_pending)
     {
         if ((cpi->source = vp8_lookahead_peek(cpi->lookahead,
                                               cpi->frames_till_gf_update_due,
                                               PEEK_FORWARD)))
         {
             cpi->alt_ref_source = cpi->source;
             if (cpi->oxcf.arnr_max_frames > 0)
             {
                 vp8_temporal_filter_prepare_c(cpi,
                                               cpi->frames_till_gf_update_due);
                 force_src_buffer = &cpi->alt_ref_buffer;
             }
             cpi->frames_till_alt_ref_frame = cpi->frames_till_gf_update_due;
             cm->refresh_alt_ref_frame = 1;
             cm->refresh_golden_frame = 0;
             cm->refresh_last_frame = 0;
             cm->show_frame = 0;
             /* Clear Pending alt Ref flag. */
             cpi->source_alt_ref_pending = 0;
             cpi->is_src_frame_alt_ref = 0;
         }
     }
 #endif
     if (!cpi->source)
     {
         /* Read last frame source if we are encoding first pass. */
         if (cpi->pass == 1 && cm->current_video_frame > 0)
         {
             if((cpi->last_source = vp8_lookahead_peek(cpi->lookahead, 1,
                                                       PEEK_BACKWARD)) == NULL)
               return -1;
         }
         if ((cpi->source = vp8_lookahead_pop(cpi->lookahead, flush)))
         {
             cm->show_frame = 1;
             cpi->is_src_frame_alt_ref = cpi->alt_ref_source
                                         && (cpi->source == cpi->alt_ref_source);
             if(cpi->is_src_frame_alt_ref)
                 cpi->alt_ref_source = NULL;
         }
     }
     if (cpi->source)
     {
         cpi->Source = force_src_buffer ? force_src_buffer : &cpi->source->img;
         cpi->un_scaled_source = cpi->Source;
         *time_stamp = cpi->source->ts_start;
         *time_end = cpi->source->ts_end;
         *frame_flags = cpi->source->flags;
         if (cpi->pass == 1 && cm->current_video_frame > 0)
         {
             cpi->last_frame_unscaled_source = &cpi->last_source->img;
         }
     }
     else
     {
         *size = 0;
 #if !(CONFIG_REALTIME_ONLY)
         if (flush && cpi->pass == 1 && !cpi->twopass.first_pass_done)
         {
             vp8_end_first_pass(cpi);    /* get last stats packet */
             cpi->twopass.first_pass_done = 1;
         }
 #endif
 #if HAVE_NEON
 #if CONFIG_RUNTIME_CPU_DETECT
         if (cm->cpu_caps & HAS_NEON)
 #endif
         {
             vp8_pop_neon(store_reg);
         }
 #endif
         return -1;
     }
     if (cpi->source->ts_start < cpi->first_time_stamp_ever)
     {
         cpi->first_time_stamp_ever = cpi->source->ts_start;
         cpi->last_end_time_stamp_seen = cpi->source->ts_start;
     }
     /* adjust frame rates based on timestamps given */
     if (cm->show_frame)
     {
         int64_t this_duration;
         int step = 0;
         if (cpi->source->ts_start == cpi->first_time_stamp_ever)
         {
             this_duration = cpi->source->ts_end - cpi->source->ts_start;
             step = 1;
         }
         else
         {
             int64_t last_duration;
             this_duration = cpi->source->ts_end - cpi->last_end_time_stamp_seen;
             last_duration = cpi->last_end_time_stamp_seen
                             - cpi->last_time_stamp_seen;
             /* do a step update if the duration changes by 10% */
             if (last_duration)
                 step = (int)(((this_duration - last_duration) *
 / last_duration));
         }
         if (this_duration)
         {
             if (step)
                 cpi->ref_framerate = 10000000.0 / this_duration;
             else
             {
                 double avg_duration, interval;
                 /* Average this frame's rate into the last second's average
                  * frame rate. If we haven't seen 1 second yet, then average
                  * over the whole interval seen.
                  */
                 interval = (double)(cpi->source->ts_end -
                                     cpi->first_time_stamp_ever);
                 if(interval > 10000000.0)
                     interval = 10000000;
                 avg_duration = 10000000.0 / cpi->ref_framerate;
                 avg_duration *= (interval - avg_duration + this_duration);
                 avg_duration /= interval;
                 cpi->ref_framerate = 10000000.0 / avg_duration;
             }
             if (cpi->oxcf.number_of_layers > 1)
             {
                 unsigned int i;
                 /* Update frame rates for each layer */
                 for (i=0; i<cpi->oxcf.number_of_layers; i++)
                 {
                     LAYER_CONTEXT *lc = &cpi->layer_context[i];
                     lc->framerate = cpi->ref_framerate /
                                     cpi->oxcf.rate_decimator[i];
                 }
             }
             else
                 vp8_new_framerate(cpi, cpi->ref_framerate);
         }
         cpi->last_time_stamp_seen = cpi->source->ts_start;
         cpi->last_end_time_stamp_seen = cpi->source->ts_end;
     }
     if (cpi->oxcf.number_of_layers > 1)
     {
         int layer;
         update_layer_contexts (cpi);
         /* Restore layer specific context & set frame rate */
         layer = cpi->oxcf.layer_id[
                 cpi->temporal_pattern_counter % cpi->oxcf.periodicity];
         restore_layer_context (cpi, layer);
         vp8_new_framerate(cpi, cpi->layer_context[layer].framerate);
     }
     if (cpi->compressor_speed == 2)
     {
         vpx_usec_timer_start(&tsctimer);
         vpx_usec_timer_start(&ticktimer);
     }
     cpi->lf_zeromv_pct = (cpi->zeromv_count * 100)/cm->MBs;
 #if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING
     {
         int i;
         const int num_part = (1 << cm->multi_token_partition);
         /* the available bytes in dest */
         const unsigned long dest_size = dest_end - dest;
         const int tok_part_buff_size = (dest_size * 9) / (10 * num_part);
         unsigned char *dp = dest;
         cpi->partition_d[0] = dp;
         dp += dest_size/10;         /* reserve 1/10 for control partition */
         cpi->partition_d_end[0] = dp;
         for(i = 0; i < num_part; i++)
         {
             cpi->partition_d[i + 1] = dp;
             dp += tok_part_buff_size;
             cpi->partition_d_end[i + 1] = dp;
         }
     }
 #endif
     /* start with a 0 size frame */
     *size = 0;
     /* Clear down mmx registers */
     vp8_clear_system_state();
     cm->frame_type = INTER_FRAME;
     cm->frame_flags = *frame_flags;
 #if 0
     if (cm->refresh_alt_ref_frame)
     {
         cm->refresh_golden_frame = 0;
         cm->refresh_last_frame = 0;
     }
     else
     {
         cm->refresh_golden_frame = 0;
         cm->refresh_last_frame = 1;
     }
 #endif
     /* find a free buffer for the new frame */
     {
         int i = 0;
         for(; i < NUM_YV12_BUFFERS; i++)
         {
             if(!cm->yv12_fb[i].flags)
             {
                 cm->new_fb_idx = i;
                 break;
             }
         }
         assert(i < NUM_YV12_BUFFERS );
     }
 #if !(CONFIG_REALTIME_ONLY)
     if (cpi->pass == 1)
     {
         Pass1Encode(cpi, size, dest, frame_flags);
     }
     else if (cpi->pass == 2)
     {
         Pass2Encode(cpi, size, dest, dest_end, frame_flags);
     }
     else
 #endif
         encode_frame_to_data_rate(cpi, size, dest, dest_end, frame_flags);
     if (cpi->compressor_speed == 2)
     {
         unsigned int duration, duration2;
         vpx_usec_timer_mark(&tsctimer);
         vpx_usec_timer_mark(&ticktimer);
         duration = (int)(vpx_usec_timer_elapsed(&ticktimer));
         duration2 = (unsigned int)((double)duration / 2);
         if (cm->frame_type != KEY_FRAME)
         {
             if (cpi->avg_encode_time == 0)
                 cpi->avg_encode_time = duration;
             else
                 cpi->avg_encode_time = (7 * cpi->avg_encode_time + duration) >> 3;
         }
         if (duration2)
         {
             {
                 if (cpi->avg_pick_mode_time == 0)
                     cpi->avg_pick_mode_time = duration2;
                 else
                     cpi->avg_pick_mode_time = (7 * cpi->avg_pick_mode_time + duration2) >> 3;
             }
         }
     }
     if (cm->refresh_entropy_probs == 0)
     {
         vpx_memcpy(&cm->fc, &cm->lfc, sizeof(cm->fc));
     }
     /* Save the contexts separately for alt ref, gold and last. */
     /* (TODO jbb -> Optimize this with pointers to avoid extra copies. ) */
     if(cm->refresh_alt_ref_frame)
         vpx_memcpy(&cpi->lfc_a, &cm->fc, sizeof(cm->fc));
     if(cm->refresh_golden_frame)
         vpx_memcpy(&cpi->lfc_g, &cm->fc, sizeof(cm->fc));
     if(cm->refresh_last_frame)
         vpx_memcpy(&cpi->lfc_n, &cm->fc, sizeof(cm->fc));
     /* if its a dropped frame honor the requests on subsequent frames */
     if (*size > 0)
     {
         cpi->droppable = !frame_is_reference(cpi);
         /* return to normal state */
         cm->refresh_entropy_probs = 1;
         cm->refresh_alt_ref_frame = 0;
         cm->refresh_golden_frame = 0;
         cm->refresh_last_frame = 1;
         cm->frame_type = INTER_FRAME;
     }
     /* Save layer specific state */
     if (cpi->oxcf.number_of_layers > 1)
         save_layer_context (cpi);
     vpx_usec_timer_mark(&cmptimer);
     cpi->time_compress_data += vpx_usec_timer_elapsed(&cmptimer);
     if (cpi->b_calculate_psnr && cpi->pass != 1 && cm->show_frame)
     {
         generate_psnr_packet(cpi);
     }
 #if CONFIG_INTERNAL_STATS
     if (cpi->pass != 1)
     {
         cpi->bytes += *size;
         if (cm->show_frame)
         {
             cpi->common.show_frame_mi = cpi->common.mi;
             cpi->count ++;
             if (cpi->b_calculate_psnr)
             {
                 uint64_t ye,ue,ve;
                 double frame_psnr;
                 YV12_BUFFER_CONFIG      *orig = cpi->Source;
                 YV12_BUFFER_CONFIG      *recon = cpi->common.frame_to_show;
                 int y_samples = orig->y_height * orig->y_width ;
                 int uv_samples = orig->uv_height * orig->uv_width ;
                 int t_samples = y_samples + 2 * uv_samples;
                 double sq_error, sq_error2;
                 ye = calc_plane_error(orig->y_buffer, orig->y_stride,
                   recon->y_buffer, recon->y_stride, orig->y_width, orig->y_height);
                 ue = calc_plane_error(orig->u_buffer, orig->uv_stride,
                   recon->u_buffer, recon->uv_stride, orig->uv_width, orig->uv_height);
                 ve = calc_plane_error(orig->v_buffer, orig->uv_stride,
                   recon->v_buffer, recon->uv_stride, orig->uv_width, orig->uv_height);
                 sq_error = (double)(ye + ue + ve);
                 frame_psnr = vp8_mse2psnr(t_samples, 255.0, sq_error);
                 cpi->total_y += vp8_mse2psnr(y_samples, 255.0, (double)ye);
                 cpi->total_u += vp8_mse2psnr(uv_samples, 255.0, (double)ue);
                 cpi->total_v += vp8_mse2psnr(uv_samples, 255.0, (double)ve);
                 cpi->total_sq_error += sq_error;
                 cpi->total  += frame_psnr;
 #if CONFIG_POSTPROC
                 {
                     YV12_BUFFER_CONFIG      *pp = &cm->post_proc_buffer;
                     double frame_psnr2, frame_ssim2 = 0;
                     double weight = 0;
                     vp8_deblock(cm, cm->frame_to_show, &cm->post_proc_buffer, cm->filter_level * 10 / 6, 1, 0);
                     vp8_clear_system_state();
                     ye = calc_plane_error(orig->y_buffer, orig->y_stride,
                       pp->y_buffer, pp->y_stride, orig->y_width, orig->y_height);
                     ue = calc_plane_error(orig->u_buffer, orig->uv_stride,
                       pp->u_buffer, pp->uv_stride, orig->uv_width, orig->uv_height);
                     ve = calc_plane_error(orig->v_buffer, orig->uv_stride,
                       pp->v_buffer, pp->uv_stride, orig->uv_width, orig->uv_height);
                     sq_error2 = (double)(ye + ue + ve);
                     frame_psnr2 = vp8_mse2psnr(t_samples, 255.0, sq_error2);
                     cpi->totalp_y += vp8_mse2psnr(y_samples,
 .0, (double)ye);
                     cpi->totalp_u += vp8_mse2psnr(uv_samples,
 .0, (double)ue);
                     cpi->totalp_v += vp8_mse2psnr(uv_samples,
 .0, (double)ve);
                     cpi->total_sq_error2 += sq_error2;
                     cpi->totalp  += frame_psnr2;
                     frame_ssim2 = vp8_calc_ssim(cpi->Source,
                       &cm->post_proc_buffer, 1, &weight);
                     cpi->summed_quality += frame_ssim2 * weight;
                     cpi->summed_weights += weight;
                     if (cpi->oxcf.number_of_layers > 1)
                     {
                          unsigned int i;
                          for (i=cpi->current_layer;
                                        i<cpi->oxcf.number_of_layers; i++)
                          {
                              cpi->frames_in_layer[i]++;
                              cpi->bytes_in_layer[i] += *size;
                              cpi->sum_psnr[i]       += frame_psnr;
                              cpi->sum_psnr_p[i]     += frame_psnr2;
                              cpi->total_error2[i]   += sq_error;
                              cpi->total_error2_p[i] += sq_error2;
                              cpi->sum_ssim[i]       += frame_ssim2 * weight;
                              cpi->sum_weights[i]    += weight;
                          }
                     }
                 }
 #endif
             }
             if (cpi->b_calculate_ssimg)
             {
                 double y, u, v, frame_all;
                 frame_all =  vp8_calc_ssimg(cpi->Source, cm->frame_to_show,
                     &y, &u, &v);
                 if (cpi->oxcf.number_of_layers > 1)
                 {
                     unsigned int i;
                     for (i=cpi->current_layer;
                          i<cpi->oxcf.number_of_layers; i++)
                     {
                         if (!cpi->b_calculate_psnr)
                             cpi->frames_in_layer[i]++;
                         cpi->total_ssimg_y_in_layer[i] += y;
                         cpi->total_ssimg_u_in_layer[i] += u;
                         cpi->total_ssimg_v_in_layer[i] += v;
                         cpi->total_ssimg_all_in_layer[i] += frame_all;
                     }
                 }
                 else
                 {
                     cpi->total_ssimg_y += y;
                     cpi->total_ssimg_u += u;
                     cpi->total_ssimg_v += v;
                     cpi->total_ssimg_all += frame_all;
                 }
             }
         }
     }
 #if 0
     if (cpi->common.frame_type != 0 && cpi->common.base_qindex == cpi->oxcf.worst_allowed_q)
     {
         skiptruecount += cpi->skip_true_count;
         skipfalsecount += cpi->skip_false_count;
     }
 #endif
 #if 0
     if (cpi->pass != 1)
     {
         FILE *f = fopen("skip.stt", "a");
         fprintf(f, "frame:%4d flags:%4x Q:%4d P:%4d Size:%5d\n", cpi->common.current_video_frame, *frame_flags, cpi->common.base_qindex, cpi->prob_skip_false, *size);
         if (cpi->is_src_frame_alt_ref == 1)
             fprintf(f, "skipcount: %4d framesize: %d\n", cpi->skip_true_count , *size);
         fclose(f);
     }
 #endif
 #endif
 #if HAVE_NEON
 #if CONFIG_RUNTIME_CPU_DETECT
     if (cm->cpu_caps & HAS_NEON)
 #endif
     {
         vp8_pop_neon(store_reg);
     }
 #endif
     cpi->common.error.setjmp = 0;
     return 0;
 }
 int vp8_get_preview_raw_frame(VP8_COMP *cpi, YV12_BUFFER_CONFIG *dest, vp8_ppflags_t *flags)
 {
     if (cpi->common.refresh_alt_ref_frame)
         return -1;
     else
     {
         int ret;
 #if CONFIG_MULTITHREAD
         if(cpi->b_lpf_running)
         {
             sem_wait(&cpi->h_event_end_lpf);
             cpi->b_lpf_running = 0;
         }
 #endif
 #if CONFIG_POSTPROC
         cpi->common.show_frame_mi = cpi->common.mi;
         ret = vp8_post_proc_frame(&cpi->common, dest, flags);
 #else
         if (cpi->common.frame_to_show)
         {
             *dest = *cpi->common.frame_to_show;
             dest->y_width = cpi->common.Width;
             dest->y_height = cpi->common.Height;
             dest->uv_height = cpi->common.Height / 2;
             ret = 0;
         }
         else
         {
             ret = -1;
         }
 #endif
         vp8_clear_system_state();
         return ret;
     }
 }
 int vp8_set_roimap(VP8_COMP *cpi, unsigned char *map, unsigned int rows, unsigned int cols, int delta_q[4], int delta_lf[4], unsigned int threshold[4])
 {
     signed char feature_data[MB_LVL_MAX][MAX_MB_SEGMENTS];
     int internal_delta_q[MAX_MB_SEGMENTS];
     const int range = 63;
     int i;
     // This method is currently incompatible with the cyclic refresh method
     if ( cpi->cyclic_refresh_mode_enabled )
         return -1;
     // Check number of rows and columns match
     if (cpi->common.mb_rows != rows || cpi->common.mb_cols != cols)
         return -1;
     // Range check the delta Q values and convert the external Q range values
     // to internal ones.
     if ( (abs(delta_q[0]) > range) || (abs(delta_q[1]) > range) ||
          (abs(delta_q[2]) > range) || (abs(delta_q[3]) > range) )
         return -1;
     // Range check the delta lf values
     if ( (abs(delta_lf[0]) > range) || (abs(delta_lf[1]) > range) ||
          (abs(delta_lf[2]) > range) || (abs(delta_lf[3]) > range) )
         return -1;
     if (!map)
     {
         disable_segmentation(cpi);
         return 0;
     }
     // Translate the external delta q values to internal values.
     for ( i = 0; i < MAX_MB_SEGMENTS; i++ )
         internal_delta_q[i] =
             ( delta_q[i] >= 0 ) ? q_trans[delta_q[i]] : -q_trans[-delta_q[i]];
     /* Set the segmentation Map */
     set_segmentation_map(cpi, map);
     /* Activate segmentation. */
     enable_segmentation(cpi);
     /* Set up the quant segment data */
     feature_data[MB_LVL_ALT_Q][0] = internal_delta_q[0];
     feature_data[MB_LVL_ALT_Q][1] = internal_delta_q[1];
     feature_data[MB_LVL_ALT_Q][2] = internal_delta_q[2];
     feature_data[MB_LVL_ALT_Q][3] = internal_delta_q[3];
     /* Set up the loop segment data s */
     feature_data[MB_LVL_ALT_LF][0] = delta_lf[0];
     feature_data[MB_LVL_ALT_LF][1] = delta_lf[1];
     feature_data[MB_LVL_ALT_LF][2] = delta_lf[2];
     feature_data[MB_LVL_ALT_LF][3] = delta_lf[3];
     cpi->segment_encode_breakout[0] = threshold[0];
     cpi->segment_encode_breakout[1] = threshold[1];
     cpi->segment_encode_breakout[2] = threshold[2];
     cpi->segment_encode_breakout[3] = threshold[3];
     /* Initialise the feature data structure */
     set_segment_data(cpi, &feature_data[0][0], SEGMENT_DELTADATA);
     return 0;
 }
 int vp8_set_active_map(VP8_COMP *cpi, unsigned char *map, unsigned int rows, unsigned int cols)
 {
     if (rows == cpi->common.mb_rows && cols == cpi->common.mb_cols)
     {
         if (map)
         {
             vpx_memcpy(cpi->active_map, map, rows * cols);
             cpi->active_map_enabled = 1;
         }
         else
             cpi->active_map_enabled = 0;
         return 0;
     }
     else
     {
         return -1 ;
     }
 }
 int vp8_set_internal_size(VP8_COMP *cpi, VPX_SCALING horiz_mode, VPX_SCALING vert_mode)
 {
     if (horiz_mode <= ONETWO)
         cpi->common.horiz_scale = horiz_mode;
     else
         return -1;
     if (vert_mode <= ONETWO)
         cpi->common.vert_scale  = vert_mode;
     else
         return -1;
     return 0;
 }
 int vp8_calc_ss_err(YV12_BUFFER_CONFIG *source, YV12_BUFFER_CONFIG *dest)
 {
     int i, j;
     int Total = 0;
     unsigned char *src = source->y_buffer;
     unsigned char *dst = dest->y_buffer;
     /* Loop through the Y plane raw and reconstruction data summing
      * (square differences)
      */
     for (i = 0; i < source->y_height; i += 16)
     {
         for (j = 0; j < source->y_width; j += 16)
         {
             unsigned int sse;
             Total += vp8_mse16x16(src + j, source->y_stride, dst + j, dest->y_stride, &sse);
         }
         src += 16 * source->y_stride;
         dst += 16 * dest->y_stride;
     }
     return Total;
 }
 int vp8_get_quantizer(VP8_COMP *cpi)
 {
     return cpi->common.base_qindex;
 }

The Tor Browser / annotate

media/libvpx/vp8/encoder/onyx_if.c@b8a032363ba2 (annotated)

media/libvpx/vp8/encoder/onyx_if.c