The Tor Browser: media/libvpx/vp9/encoder/vp9_onyx

media/libvpx/vp9/encoder/vp9_onyx_if.c@b8a032363ba2 (annotated)

media/libvpx/vp9/encoder/vp9_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 <math.h>
 #include <stdio.h>
 #include <limits.h>
 #include "./vpx_config.h"
 #include "./vpx_scale_rtcd.h"
 #include "vp9/common/vp9_alloccommon.h"
 #include "vp9/common/vp9_filter.h"
 #include "vp9/common/vp9_idct.h"
 #if CONFIG_VP9_POSTPROC
 #include "vp9/common/vp9_postproc.h"
 #endif
 #include "vp9/common/vp9_reconinter.h"
 #include "vp9/common/vp9_systemdependent.h"
 #include "vp9/common/vp9_tile_common.h"
 #include "vp9/encoder/vp9_firstpass.h"
 #include "vp9/encoder/vp9_mbgraph.h"
 #include "vp9/encoder/vp9_onyx_int.h"
 #include "vp9/encoder/vp9_picklpf.h"
 #include "vp9/encoder/vp9_psnr.h"
 #include "vp9/encoder/vp9_ratectrl.h"
 #include "vp9/encoder/vp9_rdopt.h"
 #include "vp9/encoder/vp9_segmentation.h"
 #include "vp9/encoder/vp9_temporal_filter.h"
 #include "vp9/encoder/vp9_vaq.h"
 #include "vpx_ports/vpx_timer.h"
 extern void print_tree_update_probs();
 static void set_default_lf_deltas(struct loopfilter *lf);
 #define DEFAULT_INTERP_FILTER SWITCHABLE
 #define SHARP_FILTER_QTHRESH 0          /* Q threshold for 8-tap sharp filter */
 #define ALTREF_HIGH_PRECISION_MV 1      // Whether to use high precision mv
                                          //  for altref computation.
 #define HIGH_PRECISION_MV_QTHRESH 200   // Q threshold for high precision
                                          // mv. Choose a very high value for
                                          // now so that HIGH_PRECISION is always
                                          // chosen.
 // Masks for partially or completely disabling split mode
 #define DISABLE_ALL_SPLIT         0x3F
 #define DISABLE_ALL_INTER_SPLIT   0x1F
 #define DISABLE_COMPOUND_SPLIT    0x18
 #define LAST_AND_INTRA_SPLIT_ONLY 0x1E
 #if CONFIG_INTERNAL_STATS
 extern double vp9_calc_ssim(YV12_BUFFER_CONFIG *source,
                             YV12_BUFFER_CONFIG *dest, int lumamask,
                             double *weight);
 extern double vp9_calc_ssimg(YV12_BUFFER_CONFIG *source,
                              YV12_BUFFER_CONFIG *dest, double *ssim_y,
                              double *ssim_u, double *ssim_v);
 #endif
 // #define OUTPUT_YUV_REC
 #ifdef OUTPUT_YUV_SRC
 FILE *yuv_file;
 #endif
 #ifdef OUTPUT_YUV_REC
 FILE *yuv_rec_file;
 #endif
 #if 0
 FILE *framepsnr;
 FILE *kf_list;
 FILE *keyfile;
 #endif
 #ifdef ENTROPY_STATS
 extern int intra_mode_stats[INTRA_MODES]
                            [INTRA_MODES]
                            [INTRA_MODES];
 #endif
 #ifdef MODE_STATS
 extern void init_tx_count_stats();
 extern void write_tx_count_stats();
 extern void init_switchable_interp_stats();
 extern void write_switchable_interp_stats();
 #endif
 #ifdef SPEEDSTATS
 unsigned int frames_at_speed[16] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 , 0, 0};
 #endif
 #if defined(SECTIONBITS_OUTPUT)
 extern unsigned __int64 Sectionbits[500];
 #endif
 extern void vp9_init_quantizer(VP9_COMP *cpi);
 // Tables relating active max Q to active min Q
 static int kf_low_motion_minq[QINDEX_RANGE];
 static int kf_high_motion_minq[QINDEX_RANGE];
 static int gf_low_motion_minq[QINDEX_RANGE];
 static int gf_high_motion_minq[QINDEX_RANGE];
 static int inter_minq[QINDEX_RANGE];
 static int afq_low_motion_minq[QINDEX_RANGE];
 static int afq_high_motion_minq[QINDEX_RANGE];
 static INLINE void Scale2Ratio(int mode, int *hr, int *hs) {
   switch (mode) {
     case NORMAL:
       *hr = 1;
       *hs = 1;
       break;
     case FOURFIVE:
       *hr = 4;
       *hs = 5;
       break;
     case THREEFIVE:
       *hr = 3;
       *hs = 5;
     break;
     case ONETWO:
       *hr = 1;
       *hs = 2;
     break;
     default:
       *hr = 1;
       *hs = 1;
        assert(0);
       break;
   }
 }
 // Functions to compute the active minq lookup table entries based on a
 // formulaic approach to facilitate easier adjustment of the Q tables.
 // The formulae were derived from computing a 3rd order polynomial best
 // fit to the original data (after plotting real maxq vs minq (not q index))
 static int calculate_minq_index(double maxq,
                                 double x3, double x2, double x1, double c) {
   int i;
   const double minqtarget = MIN(((x3 * maxq + x2) * maxq + x1) * maxq + c,
                                 maxq);
   // Special case handling to deal with the step from q2.0
   // down to lossless mode represented by q 1.0.
   if (minqtarget <= 2.0)
     return 0;
   for (i = 0; i < QINDEX_RANGE; i++) {
     if (minqtarget <= vp9_convert_qindex_to_q(i))
       return i;
   }
   return QINDEX_RANGE - 1;
 }
 static void init_minq_luts(void) {
   int i;
   for (i = 0; i < QINDEX_RANGE; i++) {
     const double maxq = vp9_convert_qindex_to_q(i);
     kf_low_motion_minq[i] = calculate_minq_index(maxq,
 .000001,
                                                  -0.0004,
 .15,
 .0);
     kf_high_motion_minq[i] = calculate_minq_index(maxq,
 .000002,
                                                   -0.0012,
 .5,
 .0);
     gf_low_motion_minq[i] = calculate_minq_index(maxq,
 .0000015,
                                                  -0.0009,
 .32,
 .0);
     gf_high_motion_minq[i] = calculate_minq_index(maxq,
 .0000021,
                                                   -0.00125,
 .50,
 .0);
     inter_minq[i] = calculate_minq_index(maxq,
 .00000271,
                                          -0.00113,
 .75,
 .0);
     afq_low_motion_minq[i] = calculate_minq_index(maxq,
 .0000015,
                                                   -0.0009,
 .33,
 .0);
     afq_high_motion_minq[i] = calculate_minq_index(maxq,
 .0000021,
                                                    -0.00125,
 .55,
 .0);
   }
 }
 static int get_active_quality(int q,
                               int gfu_boost,
                               int low,
                               int high,
                               int *low_motion_minq,
                               int *high_motion_minq) {
   int active_best_quality;
   if (gfu_boost > high) {
     active_best_quality = low_motion_minq[q];
   } else if (gfu_boost < low) {
     active_best_quality = high_motion_minq[q];
   } else {
     const int gap = high - low;
     const int offset = high - gfu_boost;
     const int qdiff = high_motion_minq[q] - low_motion_minq[q];
     const int adjustment = ((offset * qdiff) + (gap >> 1)) / gap;
     active_best_quality = low_motion_minq[q] + adjustment;
   }
   return active_best_quality;
 }
 static void set_mvcost(VP9_COMP *cpi) {
   MACROBLOCK *const mb = &cpi->mb;
   if (cpi->common.allow_high_precision_mv) {
     mb->mvcost = mb->nmvcost_hp;
     mb->mvsadcost = mb->nmvsadcost_hp;
   } else {
     mb->mvcost = mb->nmvcost;
     mb->mvsadcost = mb->nmvsadcost;
   }
 }
 void vp9_initialize_enc() {
   static int init_done = 0;
   if (!init_done) {
     vp9_initialize_common();
     vp9_tokenize_initialize();
     vp9_init_quant_tables();
     vp9_init_me_luts();
     init_minq_luts();
     // init_base_skip_probs();
     init_done = 1;
   }
 }
 static void setup_features(VP9_COMMON *cm) {
   struct loopfilter *const lf = &cm->lf;
   struct segmentation *const seg = &cm->seg;
   // Set up default state for MB feature flags
   seg->enabled = 0;
   seg->update_map = 0;
   seg->update_data = 0;
   vpx_memset(seg->tree_probs, 255, sizeof(seg->tree_probs));
   vp9_clearall_segfeatures(seg);
   lf->mode_ref_delta_enabled = 0;
   lf->mode_ref_delta_update = 0;
   vp9_zero(lf->ref_deltas);
   vp9_zero(lf->mode_deltas);
   vp9_zero(lf->last_ref_deltas);
   vp9_zero(lf->last_mode_deltas);
   set_default_lf_deltas(lf);
 }
 static void dealloc_compressor_data(VP9_COMP *cpi) {
   // Delete sementation map
   vpx_free(cpi->segmentation_map);
   cpi->segmentation_map = 0;
   vpx_free(cpi->common.last_frame_seg_map);
   cpi->common.last_frame_seg_map = 0;
   vpx_free(cpi->coding_context.last_frame_seg_map_copy);
   cpi->coding_context.last_frame_seg_map_copy = 0;
   vpx_free(cpi->active_map);
   cpi->active_map = 0;
   vp9_free_frame_buffers(&cpi->common);
   vp9_free_frame_buffer(&cpi->last_frame_uf);
   vp9_free_frame_buffer(&cpi->scaled_source);
   vp9_free_frame_buffer(&cpi->alt_ref_buffer);
   vp9_lookahead_destroy(cpi->lookahead);
   vpx_free(cpi->tok);
   cpi->tok = 0;
   // Activity mask based per mb zbin adjustments
   vpx_free(cpi->mb_activity_map);
   cpi->mb_activity_map = 0;
   vpx_free(cpi->mb_norm_activity_map);
   cpi->mb_norm_activity_map = 0;
   vpx_free(cpi->above_context[0]);
   cpi->above_context[0] = NULL;
   vpx_free(cpi->above_seg_context);
   cpi->above_seg_context = NULL;
 }
 // Computes a q delta (in "q index" terms) to get from a starting q value
 // to a target value
 // target q value
 int vp9_compute_qdelta(VP9_COMP *cpi, double qstart, double qtarget) {
   int i;
   int start_index = cpi->worst_quality;
   int target_index = cpi->worst_quality;
   // Convert the average q value to an index.
   for (i = cpi->best_quality; i < cpi->worst_quality; i++) {
     start_index = i;
     if (vp9_convert_qindex_to_q(i) >= qstart)
       break;
   }
   // Convert the q target to an index
   for (i = cpi->best_quality; i < cpi->worst_quality; i++) {
     target_index = i;
     if (vp9_convert_qindex_to_q(i) >= qtarget)
       break;
   }
   return target_index - start_index;
 }
 static void configure_static_seg_features(VP9_COMP *cpi) {
   VP9_COMMON *cm = &cpi->common;
   struct segmentation *seg = &cm->seg;
   int high_q = (int)(cpi->avg_q > 48.0);
   int qi_delta;
   // Disable and clear down for KF
   if (cm->frame_type == KEY_FRAME) {
     // Clear down the global segmentation map
     vpx_memset(cpi->segmentation_map, 0, cm->mi_rows * cm->mi_cols);
     seg->update_map = 0;
     seg->update_data = 0;
     cpi->static_mb_pct = 0;
     // Disable segmentation
     vp9_disable_segmentation((VP9_PTR)cpi);
     // Clear down the segment features.
     vp9_clearall_segfeatures(seg);
   } else if (cpi->refresh_alt_ref_frame) {
     // If this is an alt ref frame
     // Clear down the global segmentation map
     vpx_memset(cpi->segmentation_map, 0, cm->mi_rows * cm->mi_cols);
     seg->update_map = 0;
     seg->update_data = 0;
     cpi->static_mb_pct = 0;
     // Disable segmentation and individual segment features by default
     vp9_disable_segmentation((VP9_PTR)cpi);
     vp9_clearall_segfeatures(seg);
     // Scan frames from current to arf frame.
     // This function re-enables segmentation if appropriate.
     vp9_update_mbgraph_stats(cpi);
     // If segmentation was enabled set those features needed for the
     // arf itself.
     if (seg->enabled) {
       seg->update_map = 1;
       seg->update_data = 1;
       qi_delta = vp9_compute_qdelta(cpi, cpi->avg_q, (cpi->avg_q * 0.875));
       vp9_set_segdata(seg, 1, SEG_LVL_ALT_Q, (qi_delta - 2));
       vp9_set_segdata(seg, 1, SEG_LVL_ALT_LF, -2);
       vp9_enable_segfeature(seg, 1, SEG_LVL_ALT_Q);
       vp9_enable_segfeature(seg, 1, SEG_LVL_ALT_LF);
       // Where relevant assume segment data is delta data
       seg->abs_delta = SEGMENT_DELTADATA;
     }
   } else if (seg->enabled) {
     // All other frames if segmentation has been enabled
     // First normal frame in a valid gf or alt ref group
     if (cpi->frames_since_golden == 0) {
       // Set up segment features for normal frames in an arf group
       if (cpi->source_alt_ref_active) {
         seg->update_map = 0;
         seg->update_data = 1;
         seg->abs_delta = SEGMENT_DELTADATA;
         qi_delta = vp9_compute_qdelta(cpi, cpi->avg_q,
                                       (cpi->avg_q * 1.125));
         vp9_set_segdata(seg, 1, SEG_LVL_ALT_Q, (qi_delta + 2));
         vp9_enable_segfeature(seg, 1, SEG_LVL_ALT_Q);
         vp9_set_segdata(seg, 1, SEG_LVL_ALT_LF, -2);
         vp9_enable_segfeature(seg, 1, SEG_LVL_ALT_LF);
         // Segment coding disabled for compred testing
         if (high_q || (cpi->static_mb_pct == 100)) {
           vp9_set_segdata(seg, 1, SEG_LVL_REF_FRAME, ALTREF_FRAME);
           vp9_enable_segfeature(seg, 1, SEG_LVL_REF_FRAME);
           vp9_enable_segfeature(seg, 1, SEG_LVL_SKIP);
         }
       } else {
         // Disable segmentation and clear down features if alt ref
         // is not active for this group
         vp9_disable_segmentation((VP9_PTR)cpi);
         vpx_memset(cpi->segmentation_map, 0, cm->mi_rows * cm->mi_cols);
         seg->update_map = 0;
         seg->update_data = 0;
         vp9_clearall_segfeatures(seg);
       }
     } else if (cpi->is_src_frame_alt_ref) {
       // Special case where we are coding over the top of a previous
       // alt ref frame.
       // Segment coding disabled for compred testing
       // Enable ref frame features for segment 0 as well
       vp9_enable_segfeature(seg, 0, SEG_LVL_REF_FRAME);
       vp9_enable_segfeature(seg, 1, SEG_LVL_REF_FRAME);
       // All mbs should use ALTREF_FRAME
       vp9_clear_segdata(seg, 0, SEG_LVL_REF_FRAME);
       vp9_set_segdata(seg, 0, SEG_LVL_REF_FRAME, ALTREF_FRAME);
       vp9_clear_segdata(seg, 1, SEG_LVL_REF_FRAME);
       vp9_set_segdata(seg, 1, SEG_LVL_REF_FRAME, ALTREF_FRAME);
       // Skip all MBs if high Q (0,0 mv and skip coeffs)
       if (high_q) {
         vp9_enable_segfeature(seg, 0, SEG_LVL_SKIP);
         vp9_enable_segfeature(seg, 1, SEG_LVL_SKIP);
       }
       // Enable data update
       seg->update_data = 1;
     } else {
       // All other frames.
       // No updates.. leave things as they are.
       seg->update_map = 0;
       seg->update_data = 0;
     }
   }
 }
 #ifdef ENTROPY_STATS
 void vp9_update_mode_context_stats(VP9_COMP *cpi) {
   VP9_COMMON *cm = &cpi->common;
   int i, j;
   unsigned int (*inter_mode_counts)[INTER_MODES - 1][2] =
       cm->fc.inter_mode_counts;
   int64_t (*mv_ref_stats)[INTER_MODES - 1][2] = cpi->mv_ref_stats;
   FILE *f;
   // Read the past stats counters
   f = fopen("mode_context.bin",  "rb");
   if (!f) {
     vpx_memset(cpi->mv_ref_stats, 0, sizeof(cpi->mv_ref_stats));
   } else {
     fread(cpi->mv_ref_stats, sizeof(cpi->mv_ref_stats), 1, f);
     fclose(f);
   }
   // Add in the values for this frame
   for (i = 0; i < INTER_MODE_CONTEXTS; i++) {
     for (j = 0; j < INTER_MODES - 1; j++) {
       mv_ref_stats[i][j][0] += (int64_t)inter_mode_counts[i][j][0];
       mv_ref_stats[i][j][1] += (int64_t)inter_mode_counts[i][j][1];
     }
   }
   // Write back the accumulated stats
   f = fopen("mode_context.bin",  "wb");
   fwrite(cpi->mv_ref_stats, sizeof(cpi->mv_ref_stats), 1, f);
   fclose(f);
 }
 void print_mode_context(VP9_COMP *cpi) {
   FILE *f = fopen("vp9_modecont.c", "a");
   int i, j;
   fprintf(f, "#include \"vp9_entropy.h\"\n");
   fprintf(
       f,
       "const int inter_mode_probs[INTER_MODE_CONTEXTS][INTER_MODES - 1] =");
   fprintf(f, "{\n");
   for (j = 0; j < INTER_MODE_CONTEXTS; j++) {
     fprintf(f, "  {/* %d */ ", j);
     fprintf(f, "    ");
     for (i = 0; i < INTER_MODES - 1; i++) {
       int this_prob;
       int64_t count = cpi->mv_ref_stats[j][i][0] + cpi->mv_ref_stats[j][i][1];
       if (count)
         this_prob = ((cpi->mv_ref_stats[j][i][0] * 256) + (count >> 1)) / count;
       else
         this_prob = 128;
       // context probs
       fprintf(f, "%5d, ", this_prob);
     }
     fprintf(f, "  },\n");
   }
   fprintf(f, "};\n");
   fclose(f);
 }
 #endif  // ENTROPY_STATS
 // DEBUG: Print out the segment id of each MB in the current frame.
 static void print_seg_map(VP9_COMP *cpi) {
   VP9_COMMON *cm = &cpi->common;
   int row, col;
   int map_index = 0;
   FILE *statsfile = fopen("segmap.stt", "a");
   fprintf(statsfile, "%10d\n", cm->current_video_frame);
   for (row = 0; row < cpi->common.mi_rows; row++) {
     for (col = 0; col < cpi->common.mi_cols; col++) {
       fprintf(statsfile, "%10d", cpi->segmentation_map[map_index]);
       map_index++;
     }
     fprintf(statsfile, "\n");
   }
   fprintf(statsfile, "\n");
   fclose(statsfile);
 }
 static void update_reference_segmentation_map(VP9_COMP *cpi) {
   VP9_COMMON *const cm = &cpi->common;
   int row, col;
   MODE_INFO **mi_8x8, **mi_8x8_ptr = cm->mi_grid_visible;
   uint8_t *cache_ptr = cm->last_frame_seg_map, *cache;
   for (row = 0; row < cm->mi_rows; row++) {
     mi_8x8 = mi_8x8_ptr;
     cache = cache_ptr;
     for (col = 0; col < cm->mi_cols; col++, mi_8x8++, cache++)
       cache[0] = mi_8x8[0]->mbmi.segment_id;
     mi_8x8_ptr += cm->mode_info_stride;
     cache_ptr += cm->mi_cols;
   }
 }
 static void set_default_lf_deltas(struct loopfilter *lf) {
   lf->mode_ref_delta_enabled = 1;
   lf->mode_ref_delta_update = 1;
   vp9_zero(lf->ref_deltas);
   vp9_zero(lf->mode_deltas);
   // Test of ref frame deltas
   lf->ref_deltas[INTRA_FRAME] = 2;
   lf->ref_deltas[LAST_FRAME] = 0;
   lf->ref_deltas[GOLDEN_FRAME] = -2;
   lf->ref_deltas[ALTREF_FRAME] = -2;
   lf->mode_deltas[0] = 0;   // Zero
   lf->mode_deltas[1] = 0;   // New mv
 }
 static void set_rd_speed_thresholds(VP9_COMP *cpi, int mode) {
   SPEED_FEATURES *sf = &cpi->sf;
   int i;
   // Set baseline threshold values
   for (i = 0; i < MAX_MODES; ++i)
     sf->thresh_mult[i] = mode == 0 ? -500 : 0;
   sf->thresh_mult[THR_NEARESTMV] = 0;
   sf->thresh_mult[THR_NEARESTG] = 0;
   sf->thresh_mult[THR_NEARESTA] = 0;
   sf->thresh_mult[THR_DC] += 1000;
   sf->thresh_mult[THR_NEWMV] += 1000;
   sf->thresh_mult[THR_NEWA] += 1000;
   sf->thresh_mult[THR_NEWG] += 1000;
   sf->thresh_mult[THR_NEARMV] += 1000;
   sf->thresh_mult[THR_NEARA] += 1000;
   sf->thresh_mult[THR_COMP_NEARESTLA] += 1000;
   sf->thresh_mult[THR_COMP_NEARESTGA] += 1000;
   sf->thresh_mult[THR_TM] += 1000;
   sf->thresh_mult[THR_COMP_NEARLA] += 1500;
   sf->thresh_mult[THR_COMP_NEWLA] += 2000;
   sf->thresh_mult[THR_NEARG] += 1000;
   sf->thresh_mult[THR_COMP_NEARGA] += 1500;
   sf->thresh_mult[THR_COMP_NEWGA] += 2000;
   sf->thresh_mult[THR_ZEROMV] += 2000;
   sf->thresh_mult[THR_ZEROG] += 2000;
   sf->thresh_mult[THR_ZEROA] += 2000;
   sf->thresh_mult[THR_COMP_ZEROLA] += 2500;
   sf->thresh_mult[THR_COMP_ZEROGA] += 2500;
   sf->thresh_mult[THR_H_PRED] += 2000;
   sf->thresh_mult[THR_V_PRED] += 2000;
   sf->thresh_mult[THR_D45_PRED ] += 2500;
   sf->thresh_mult[THR_D135_PRED] += 2500;
   sf->thresh_mult[THR_D117_PRED] += 2500;
   sf->thresh_mult[THR_D153_PRED] += 2500;
   sf->thresh_mult[THR_D207_PRED] += 2500;
   sf->thresh_mult[THR_D63_PRED] += 2500;
   /* disable frame modes if flags not set */
   if (!(cpi->ref_frame_flags & VP9_LAST_FLAG)) {
     sf->thresh_mult[THR_NEWMV    ] = INT_MAX;
     sf->thresh_mult[THR_NEARESTMV] = INT_MAX;
     sf->thresh_mult[THR_ZEROMV   ] = INT_MAX;
     sf->thresh_mult[THR_NEARMV   ] = INT_MAX;
   }
   if (!(cpi->ref_frame_flags & VP9_GOLD_FLAG)) {
     sf->thresh_mult[THR_NEARESTG ] = INT_MAX;
     sf->thresh_mult[THR_ZEROG    ] = INT_MAX;
     sf->thresh_mult[THR_NEARG    ] = INT_MAX;
     sf->thresh_mult[THR_NEWG     ] = INT_MAX;
   }
   if (!(cpi->ref_frame_flags & VP9_ALT_FLAG)) {
     sf->thresh_mult[THR_NEARESTA ] = INT_MAX;
     sf->thresh_mult[THR_ZEROA    ] = INT_MAX;
     sf->thresh_mult[THR_NEARA    ] = INT_MAX;
     sf->thresh_mult[THR_NEWA     ] = INT_MAX;
   }
   if ((cpi->ref_frame_flags & (VP9_LAST_FLAG | VP9_ALT_FLAG)) !=
       (VP9_LAST_FLAG | VP9_ALT_FLAG)) {
     sf->thresh_mult[THR_COMP_ZEROLA   ] = INT_MAX;
     sf->thresh_mult[THR_COMP_NEARESTLA] = INT_MAX;
     sf->thresh_mult[THR_COMP_NEARLA   ] = INT_MAX;
     sf->thresh_mult[THR_COMP_NEWLA    ] = INT_MAX;
   }
   if ((cpi->ref_frame_flags & (VP9_GOLD_FLAG | VP9_ALT_FLAG)) !=
       (VP9_GOLD_FLAG | VP9_ALT_FLAG)) {
     sf->thresh_mult[THR_COMP_ZEROGA   ] = INT_MAX;
     sf->thresh_mult[THR_COMP_NEARESTGA] = INT_MAX;
     sf->thresh_mult[THR_COMP_NEARGA   ] = INT_MAX;
     sf->thresh_mult[THR_COMP_NEWGA    ] = INT_MAX;
   }
 }
 static void set_rd_speed_thresholds_sub8x8(VP9_COMP *cpi, int mode) {
   SPEED_FEATURES *sf = &cpi->sf;
   int i;
   for (i = 0; i < MAX_REFS; ++i)
     sf->thresh_mult_sub8x8[i] = mode == 0 ? -500 : 0;
   sf->thresh_mult_sub8x8[THR_LAST] += 2500;
   sf->thresh_mult_sub8x8[THR_GOLD] += 2500;
   sf->thresh_mult_sub8x8[THR_ALTR] += 2500;
   sf->thresh_mult_sub8x8[THR_INTRA] += 2500;
   sf->thresh_mult_sub8x8[THR_COMP_LA] += 4500;
   sf->thresh_mult_sub8x8[THR_COMP_GA] += 4500;
   // Check for masked out split cases.
   for (i = 0; i < MAX_REFS; i++) {
     if (sf->disable_split_mask & (1 << i))
       sf->thresh_mult_sub8x8[i] = INT_MAX;
   }
   // disable mode test if frame flag is not set
   if (!(cpi->ref_frame_flags & VP9_LAST_FLAG))
     sf->thresh_mult_sub8x8[THR_LAST] = INT_MAX;
   if (!(cpi->ref_frame_flags & VP9_GOLD_FLAG))
     sf->thresh_mult_sub8x8[THR_GOLD] = INT_MAX;
   if (!(cpi->ref_frame_flags & VP9_ALT_FLAG))
     sf->thresh_mult_sub8x8[THR_ALTR] = INT_MAX;
   if ((cpi->ref_frame_flags & (VP9_LAST_FLAG | VP9_ALT_FLAG)) !=
       (VP9_LAST_FLAG | VP9_ALT_FLAG))
     sf->thresh_mult_sub8x8[THR_COMP_LA] = INT_MAX;
   if ((cpi->ref_frame_flags & (VP9_GOLD_FLAG | VP9_ALT_FLAG)) !=
       (VP9_GOLD_FLAG | VP9_ALT_FLAG))
     sf->thresh_mult_sub8x8[THR_COMP_GA] = INT_MAX;
 }
 void vp9_set_speed_features(VP9_COMP *cpi) {
   SPEED_FEATURES *sf = &cpi->sf;
   int mode = cpi->compressor_speed;
   int speed = cpi->speed;
   int i;
   // Only modes 0 and 1 supported for now in experimental code basae
   if (mode > 1)
     mode = 1;
   for (i = 0; i < MAX_MODES; ++i)
     cpi->mode_chosen_counts[i] = 0;
   // best quality defaults
   sf->RD = 1;
   sf->search_method = NSTEP;
   sf->auto_filter = 1;
   sf->recode_loop = 1;
   sf->subpel_search_method = SUBPEL_TREE;
   sf->subpel_iters_per_step = 2;
   sf->optimize_coefficients = !cpi->oxcf.lossless;
   sf->reduce_first_step_size = 0;
   sf->auto_mv_step_size = 0;
   sf->max_step_search_steps = MAX_MVSEARCH_STEPS;
   sf->comp_inter_joint_search_thresh = BLOCK_4X4;
   sf->adaptive_rd_thresh = 0;
   sf->use_lastframe_partitioning = LAST_FRAME_PARTITION_OFF;
   sf->tx_size_search_method = USE_FULL_RD;
   sf->use_lp32x32fdct = 0;
   sf->adaptive_motion_search = 0;
   sf->use_avoid_tested_higherror = 0;
   sf->reference_masking = 0;
   sf->use_one_partition_size_always = 0;
   sf->less_rectangular_check = 0;
   sf->use_square_partition_only = 0;
   sf->auto_min_max_partition_size = 0;
   sf->max_partition_size = BLOCK_64X64;
   sf->min_partition_size = BLOCK_4X4;
   sf->adjust_partitioning_from_last_frame = 0;
   sf->last_partitioning_redo_frequency = 4;
   sf->disable_split_mask = 0;
   sf->mode_search_skip_flags = 0;
   sf->disable_split_var_thresh = 0;
   sf->disable_filter_search_var_thresh = 0;
   for (i = 0; i < TX_SIZES; i++) {
     sf->intra_y_mode_mask[i] = ALL_INTRA_MODES;
     sf->intra_uv_mode_mask[i] = ALL_INTRA_MODES;
   }
   sf->use_rd_breakout = 0;
   sf->skip_encode_sb = 0;
   sf->use_uv_intra_rd_estimate = 0;
   sf->use_fast_lpf_pick = 0;
   sf->use_fast_coef_updates = 0;
   sf->using_small_partition_info = 0;
   sf->mode_skip_start = MAX_MODES;  // Mode index at which mode skip mask set
 #if CONFIG_MULTIPLE_ARF
   // Switch segmentation off.
   sf->static_segmentation = 0;
 #else
   sf->static_segmentation = 0;
 #endif
   switch (mode) {
     case 0:  // This is the best quality mode.
       break;
     case 1:
 #if CONFIG_MULTIPLE_ARF
       // Switch segmentation off.
       sf->static_segmentation = 0;
 #else
       sf->static_segmentation = 0;
 #endif
       sf->use_avoid_tested_higherror = 1;
       sf->adaptive_rd_thresh = 1;
       sf->recode_loop = (speed < 1);
       if (speed == 1) {
         sf->use_square_partition_only = !frame_is_intra_only(&cpi->common);
         sf->less_rectangular_check  = 1;
         sf->tx_size_search_method = frame_is_intra_only(&cpi->common)
                                      ? USE_FULL_RD : USE_LARGESTALL;
         if (MIN(cpi->common.width, cpi->common.height) >= 720)
           sf->disable_split_mask = cpi->common.show_frame ?
               DISABLE_ALL_SPLIT : DISABLE_ALL_INTER_SPLIT;
         else
           sf->disable_split_mask = DISABLE_COMPOUND_SPLIT;
         sf->use_rd_breakout = 1;
         sf->adaptive_motion_search = 1;
         sf->auto_mv_step_size = 1;
         sf->adaptive_rd_thresh = 2;
         sf->recode_loop = 2;
         sf->intra_y_mode_mask[TX_32X32] = INTRA_DC_H_V;
         sf->intra_uv_mode_mask[TX_32X32] = INTRA_DC_H_V;
         sf->intra_uv_mode_mask[TX_16X16] = INTRA_DC_H_V;
       }
       if (speed == 2) {
         sf->use_square_partition_only = !frame_is_intra_only(&cpi->common);
         sf->less_rectangular_check  = 1;
         sf->tx_size_search_method = frame_is_intra_only(&cpi->common)
                                      ? USE_FULL_RD : USE_LARGESTALL;
         if (MIN(cpi->common.width, cpi->common.height) >= 720)
           sf->disable_split_mask = cpi->common.show_frame ?
               DISABLE_ALL_SPLIT : DISABLE_ALL_INTER_SPLIT;
         else
           sf->disable_split_mask = LAST_AND_INTRA_SPLIT_ONLY;
         sf->mode_search_skip_flags = FLAG_SKIP_INTRA_DIRMISMATCH |
                                      FLAG_SKIP_INTRA_BESTINTER |
                                      FLAG_SKIP_COMP_BESTINTRA |
                                      FLAG_SKIP_INTRA_LOWVAR;
         sf->use_rd_breakout = 1;
         sf->adaptive_motion_search = 1;
         sf->auto_mv_step_size = 1;
         sf->disable_filter_search_var_thresh = 16;
         sf->comp_inter_joint_search_thresh = BLOCK_SIZES;
         sf->auto_min_max_partition_size = 1;
         sf->use_lastframe_partitioning = LAST_FRAME_PARTITION_LOW_MOTION;
         sf->adjust_partitioning_from_last_frame = 1;
         sf->last_partitioning_redo_frequency = 3;
         sf->adaptive_rd_thresh = 2;
         sf->recode_loop = 2;
         sf->use_lp32x32fdct = 1;
         sf->mode_skip_start = 11;
         sf->intra_y_mode_mask[TX_32X32] = INTRA_DC_H_V;
         sf->intra_y_mode_mask[TX_16X16] = INTRA_DC_H_V;
         sf->intra_uv_mode_mask[TX_32X32] = INTRA_DC_H_V;
         sf->intra_uv_mode_mask[TX_16X16] = INTRA_DC_H_V;
       }
       if (speed == 3) {
         sf->use_square_partition_only = 1;
         sf->tx_size_search_method = USE_LARGESTALL;
         if (MIN(cpi->common.width, cpi->common.height) >= 720)
           sf->disable_split_mask = DISABLE_ALL_SPLIT;
         else
           sf->disable_split_mask = DISABLE_ALL_INTER_SPLIT;
         sf->mode_search_skip_flags = FLAG_SKIP_INTRA_DIRMISMATCH |
                                      FLAG_SKIP_INTRA_BESTINTER |
                                      FLAG_SKIP_COMP_BESTINTRA |
                                      FLAG_SKIP_INTRA_LOWVAR;
         sf->use_rd_breakout = 1;
         sf->adaptive_motion_search = 1;
         sf->auto_mv_step_size = 1;
         sf->disable_filter_search_var_thresh = 16;
         sf->comp_inter_joint_search_thresh = BLOCK_SIZES;
         sf->auto_min_max_partition_size = 1;
         sf->use_lastframe_partitioning = LAST_FRAME_PARTITION_ALL;
         sf->adjust_partitioning_from_last_frame = 1;
         sf->last_partitioning_redo_frequency = 3;
         sf->use_uv_intra_rd_estimate = 1;
         sf->skip_encode_sb = 1;
         sf->use_lp32x32fdct = 1;
         sf->subpel_iters_per_step = 1;
         sf->use_fast_coef_updates = 2;
         sf->adaptive_rd_thresh = 4;
         sf->mode_skip_start = 6;
       }
       if (speed == 4) {
         sf->use_square_partition_only = 1;
         sf->tx_size_search_method = USE_LARGESTALL;
         sf->disable_split_mask = DISABLE_ALL_SPLIT;
         sf->mode_search_skip_flags = FLAG_SKIP_INTRA_DIRMISMATCH |
                                      FLAG_SKIP_INTRA_BESTINTER |
                                      FLAG_SKIP_COMP_BESTINTRA |
                                      FLAG_SKIP_COMP_REFMISMATCH |
                                      FLAG_SKIP_INTRA_LOWVAR |
                                      FLAG_EARLY_TERMINATE;
         sf->use_rd_breakout = 1;
         sf->adaptive_motion_search = 1;
         sf->auto_mv_step_size = 1;
         sf->disable_filter_search_var_thresh = 16;
         sf->comp_inter_joint_search_thresh = BLOCK_SIZES;
         sf->auto_min_max_partition_size = 1;
         sf->use_lastframe_partitioning = LAST_FRAME_PARTITION_ALL;
         sf->adjust_partitioning_from_last_frame = 1;
         sf->last_partitioning_redo_frequency = 3;
         sf->use_uv_intra_rd_estimate = 1;
         sf->skip_encode_sb = 1;
         sf->use_lp32x32fdct = 1;
         sf->subpel_iters_per_step = 1;
         sf->use_fast_coef_updates = 2;
         sf->adaptive_rd_thresh = 4;
         sf->mode_skip_start = 6;
         /* sf->intra_y_mode_mask = INTRA_DC_ONLY;
         sf->intra_uv_mode_mask = INTRA_DC_ONLY;
         sf->search_method = BIGDIA;
         sf->disable_split_var_thresh = 64;
         sf->disable_filter_search_var_thresh = 64; */
       }
       if (speed == 5) {
         sf->comp_inter_joint_search_thresh = BLOCK_SIZES;
         sf->use_one_partition_size_always = 1;
         sf->always_this_block_size = BLOCK_16X16;
         sf->tx_size_search_method = frame_is_intra_only(&cpi->common) ?
                                      USE_FULL_RD : USE_LARGESTALL;
         sf->mode_search_skip_flags = FLAG_SKIP_INTRA_DIRMISMATCH |
                                      FLAG_SKIP_INTRA_BESTINTER |
                                      FLAG_SKIP_COMP_BESTINTRA |
                                      FLAG_SKIP_COMP_REFMISMATCH |
                                      FLAG_SKIP_INTRA_LOWVAR |
                                      FLAG_EARLY_TERMINATE;
         sf->use_rd_breakout = 1;
         sf->use_lp32x32fdct = 1;
         sf->optimize_coefficients = 0;
         sf->auto_mv_step_size = 1;
         // sf->reduce_first_step_size = 1;
         // sf->reference_masking = 1;
         sf->disable_split_mask = DISABLE_ALL_SPLIT;
         sf->search_method = HEX;
         sf->subpel_iters_per_step = 1;
         sf->disable_split_var_thresh = 64;
         sf->disable_filter_search_var_thresh = 96;
         for (i = 0; i < TX_SIZES; i++) {
           sf->intra_y_mode_mask[i] = INTRA_DC_ONLY;
           sf->intra_uv_mode_mask[i] = INTRA_DC_ONLY;
         }
         sf->use_fast_coef_updates = 2;
         sf->adaptive_rd_thresh = 4;
         sf->mode_skip_start = 6;
       }
       break;
   }; /* switch */
   // Set rd thresholds based on mode and speed setting
   set_rd_speed_thresholds(cpi, mode);
   set_rd_speed_thresholds_sub8x8(cpi, mode);
   // Slow quant, dct and trellis not worthwhile for first pass
   // so make sure they are always turned off.
   if (cpi->pass == 1) {
     sf->optimize_coefficients = 0;
   }
   // No recode for 1 pass.
   if (cpi->pass == 0) {
     sf->recode_loop = 0;
     sf->optimize_coefficients = 0;
   }
   cpi->mb.fwd_txm4x4 = vp9_fdct4x4;
   if (cpi->oxcf.lossless || cpi->mb.e_mbd.lossless) {
     cpi->mb.fwd_txm4x4 = vp9_fwht4x4;
   }
   if (cpi->sf.subpel_search_method == SUBPEL_ITERATIVE) {
     cpi->find_fractional_mv_step = vp9_find_best_sub_pixel_iterative;
     cpi->find_fractional_mv_step_comp = vp9_find_best_sub_pixel_comp_iterative;
   } else if (cpi->sf.subpel_search_method == SUBPEL_TREE) {
     cpi->find_fractional_mv_step = vp9_find_best_sub_pixel_tree;
     cpi->find_fractional_mv_step_comp = vp9_find_best_sub_pixel_comp_tree;
   }
   cpi->mb.optimize = cpi->sf.optimize_coefficients == 1 && cpi->pass != 1;
 #ifdef SPEEDSTATS
   frames_at_speed[cpi->speed]++;
 #endif
 }
 static void alloc_raw_frame_buffers(VP9_COMP *cpi) {
   VP9_COMMON *cm = &cpi->common;
   cpi->lookahead = vp9_lookahead_init(cpi->oxcf.width, cpi->oxcf.height,
                                       cm->subsampling_x, cm->subsampling_y,
                                       cpi->oxcf.lag_in_frames);
   if (!cpi->lookahead)
     vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                        "Failed to allocate lag buffers");
   if (vp9_realloc_frame_buffer(&cpi->alt_ref_buffer,
                                cpi->oxcf.width, cpi->oxcf.height,
                                cm->subsampling_x, cm->subsampling_y,
                                VP9BORDERINPIXELS))
     vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                        "Failed to allocate altref buffer");
 }
 void vp9_alloc_compressor_data(VP9_COMP *cpi) {
   VP9_COMMON *cm = &cpi->common;
   if (vp9_alloc_frame_buffers(cm, cm->width, cm->height))
     vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                        "Failed to allocate frame buffers");
   if (vp9_alloc_frame_buffer(&cpi->last_frame_uf,
                              cm->width, cm->height,
                              cm->subsampling_x, cm->subsampling_y,
                              VP9BORDERINPIXELS))
     vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                        "Failed to allocate last frame buffer");
   if (vp9_alloc_frame_buffer(&cpi->scaled_source,
                              cm->width, cm->height,
                              cm->subsampling_x, cm->subsampling_y,
                              VP9BORDERINPIXELS))
     vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                        "Failed to allocate scaled source buffer");
   vpx_free(cpi->tok);
   {
     unsigned int tokens = get_token_alloc(cm->mb_rows, cm->mb_cols);
     CHECK_MEM_ERROR(cm, cpi->tok, vpx_calloc(tokens, sizeof(*cpi->tok)));
   }
   vpx_free(cpi->mb_activity_map);
   CHECK_MEM_ERROR(cm, cpi->mb_activity_map,
                   vpx_calloc(sizeof(unsigned int),
                              cm->mb_rows * cm->mb_cols));
   vpx_free(cpi->mb_norm_activity_map);
   CHECK_MEM_ERROR(cm, cpi->mb_norm_activity_map,
                   vpx_calloc(sizeof(unsigned int),
                              cm->mb_rows * cm->mb_cols));
   // 2 contexts per 'mi unit', so that we have one context per 4x4 txfm
   // block where mi unit size is 8x8.
   vpx_free(cpi->above_context[0]);
   CHECK_MEM_ERROR(cm, cpi->above_context[0],
                   vpx_calloc(2 * mi_cols_aligned_to_sb(cm->mi_cols) *
                              MAX_MB_PLANE,
                              sizeof(*cpi->above_context[0])));
   vpx_free(cpi->above_seg_context);
   CHECK_MEM_ERROR(cm, cpi->above_seg_context,
                   vpx_calloc(mi_cols_aligned_to_sb(cm->mi_cols),
                              sizeof(*cpi->above_seg_context)));
 }
 static void update_frame_size(VP9_COMP *cpi) {
   VP9_COMMON *cm = &cpi->common;
   vp9_update_frame_size(cm);
   // Update size of buffers local to this frame
   if (vp9_realloc_frame_buffer(&cpi->last_frame_uf,
                                cm->width, cm->height,
                                cm->subsampling_x, cm->subsampling_y,
                                VP9BORDERINPIXELS))
     vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                        "Failed to reallocate last frame buffer");
   if (vp9_realloc_frame_buffer(&cpi->scaled_source,
                                cm->width, cm->height,
                                cm->subsampling_x, cm->subsampling_y,
                                VP9BORDERINPIXELS))
     vpx_internal_error(&cpi->common.error, VPX_CODEC_MEM_ERROR,
                        "Failed to reallocate scaled source buffer");
   {
     int y_stride = cpi->scaled_source.y_stride;
     if (cpi->sf.search_method == NSTEP) {
       vp9_init3smotion_compensation(&cpi->mb, y_stride);
     } else if (cpi->sf.search_method == DIAMOND) {
       vp9_init_dsmotion_compensation(&cpi->mb, y_stride);
     }
   }
   {
     int i;
     for (i = 1; i < MAX_MB_PLANE; ++i) {
       cpi->above_context[i] = cpi->above_context[0] +
                               i * sizeof(*cpi->above_context[0]) * 2 *
                               mi_cols_aligned_to_sb(cm->mi_cols);
     }
   }
 }
 // Table that converts 0-63 Q range values passed in outside to the Qindex
 // range used internally.
 static const int q_trans[] = {
 ,    4,   8,  12,  16,  20,  24,  28,
 ,   36,  40,  44,  48,  52,  56,  60,
 ,   68,  72,  76,  80,  84,  88,  92,
 ,  100, 104, 108, 112, 116, 120, 124,
 , 132, 136, 140, 144, 148, 152, 156,
 , 164, 168, 172, 176, 180, 184, 188,
 , 196, 200, 204, 208, 212, 216, 220,
 , 228, 232, 236, 240, 244, 249, 255,
 };
 int vp9_reverse_trans(int x) {
   int i;
   for (i = 0; i < 64; i++)
     if (q_trans[i] >= x)
       return i;
   return 63;
 };
 void vp9_new_framerate(VP9_COMP *cpi, double framerate) {
   if (framerate < 0.1)
     framerate = 30;
   cpi->oxcf.framerate = framerate;
   cpi->output_framerate = cpi->oxcf.framerate;
   cpi->per_frame_bandwidth = (int)(cpi->oxcf.target_bandwidth
                              / cpi->output_framerate);
   cpi->av_per_frame_bandwidth = (int)(cpi->oxcf.target_bandwidth
                                 / cpi->output_framerate);
   cpi->min_frame_bandwidth = (int)(cpi->av_per_frame_bandwidth *
                                    cpi->oxcf.two_pass_vbrmin_section / 100);
   cpi->min_frame_bandwidth = MAX(cpi->min_frame_bandwidth, FRAME_OVERHEAD_BITS);
   // Set Maximum gf/arf interval
   cpi->max_gf_interval = 16;
   // Extended interval for genuinely static scenes
   cpi->twopass.static_scene_max_gf_interval = cpi->key_frame_frequency >> 1;
   // Special conditions when alt 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 int64_t rescale(int val, int64_t num, int denom) {
   int64_t llnum = num;
   int64_t llden = denom;
   int64_t llval = val;
   return (llval * llnum / llden);
 }
 static void set_tile_limits(VP9_COMP *cpi) {
   VP9_COMMON *const cm = &cpi->common;
   int min_log2_tile_cols, max_log2_tile_cols;
   vp9_get_tile_n_bits(cm->mi_cols, &min_log2_tile_cols, &max_log2_tile_cols);
   cm->log2_tile_cols = clamp(cpi->oxcf.tile_columns,
                              min_log2_tile_cols, max_log2_tile_cols);
   cm->log2_tile_rows = cpi->oxcf.tile_rows;
 }
 static void init_config(VP9_PTR ptr, VP9_CONFIG *oxcf) {
   VP9_COMP *cpi = (VP9_COMP *)(ptr);
   VP9_COMMON *const cm = &cpi->common;
   int i;
   cpi->oxcf = *oxcf;
   cm->version = oxcf->version;
   cm->width = oxcf->width;
   cm->height = oxcf->height;
   cm->subsampling_x = 0;
   cm->subsampling_y = 0;
   vp9_alloc_compressor_data(cpi);
   // change includes all joint functionality
   vp9_change_config(ptr, 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;
   cpi->static_mb_pct = 0;
   cpi->lst_fb_idx = 0;
   cpi->gld_fb_idx = 1;
   cpi->alt_fb_idx = 2;
   cpi->current_layer = 0;
   cpi->use_svc = 0;
   set_tile_limits(cpi);
   cpi->fixed_divide[0] = 0;
   for (i = 1; i < 512; i++)
     cpi->fixed_divide[i] = 0x80000 / i;
 }
 void vp9_change_config(VP9_PTR ptr, VP9_CONFIG *oxcf) {
   VP9_COMP *cpi = (VP9_COMP *)(ptr);
   VP9_COMMON *const cm = &cpi->common;
   if (!cpi || !oxcf)
     return;
   if (cm->version != oxcf->version) {
     cm->version = oxcf->version;
   }
   cpi->oxcf = *oxcf;
   switch (cpi->oxcf.Mode) {
       // Real time and one pass deprecated in test code base
     case MODE_GOODQUALITY:
       cpi->pass = 0;
       cpi->compressor_speed = 2;
       cpi->oxcf.cpu_used = clamp(cpi->oxcf.cpu_used, -5, 5);
       break;
     case MODE_FIRSTPASS:
       cpi->pass = 1;
       cpi->compressor_speed = 1;
       break;
     case MODE_SECONDPASS:
       cpi->pass = 2;
       cpi->compressor_speed = 1;
       cpi->oxcf.cpu_used = clamp(cpi->oxcf.cpu_used, -5, 5);
       break;
     case MODE_SECONDPASS_BEST:
       cpi->pass = 2;
       cpi->compressor_speed = 0;
       break;
   }
   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];
   cpi->oxcf.lossless = oxcf->lossless;
   cpi->mb.e_mbd.itxm_add = cpi->oxcf.lossless ? vp9_iwht4x4_add
                                               : vp9_idct4x4_add;
   cpi->baseline_gf_interval = DEFAULT_GF_INTERVAL;
   cpi->ref_frame_flags = VP9_ALT_FLAG | VP9_GOLD_FLAG | VP9_LAST_FLAG;
   // cpi->use_golden_frame_only = 0;
   // cpi->use_last_frame_only = 0;
   cpi->refresh_golden_frame = 0;
   cpi->refresh_last_frame = 1;
   cm->refresh_frame_context = 1;
   cm->reset_frame_context = 0;
   setup_features(cm);
   cpi->common.allow_high_precision_mv = 0;  // Default mv precision
   set_mvcost(cpi);
   {
     int i;
     for (i = 0; i < MAX_SEGMENTS; i++)
       cpi->segment_encode_breakout[i] = cpi->oxcf.encode_breakout;
   }
   // At the moment the first order values may not be > MAXQ
   cpi->oxcf.fixed_q = MIN(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;
   }
   // Convert target bandwidth from Kbit/s to Bit/s
   cpi->oxcf.target_bandwidth       *= 1000;
   cpi->oxcf.starting_buffer_level = rescale(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(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(cpi->oxcf.maximum_buffer_size,
                                             cpi->oxcf.target_bandwidth, 1000);
   // Set up frame rate and related parameters rate control values.
   vp9_new_framerate(cpi, cpi->oxcf.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
   cpi->active_worst_quality = clamp(cpi->active_worst_quality,
                                     cpi->oxcf.best_allowed_q,
                                     cpi->oxcf.worst_allowed_q);
   cpi->active_best_quality = clamp(cpi->active_best_quality,
                                    cpi->oxcf.best_allowed_q,
                                    cpi->oxcf.worst_allowed_q);
   cpi->buffered_mode = cpi->oxcf.optimal_buffer_level > 0;
   cpi->cq_target_quality = cpi->oxcf.cq_level;
   cm->mcomp_filter_type = DEFAULT_INTERP_FILTER;
   cpi->target_bandwidth = cpi->oxcf.target_bandwidth;
   cm->display_width = cpi->oxcf.width;
   cm->display_height = cpi->oxcf.height;
   // VP8 sharpness level mapping 0-7 (vs 0-10 in general VPx dialogs)
   cpi->oxcf.Sharpness = MIN(7, cpi->oxcf.Sharpness);
   cpi->common.lf.sharpness_level = cpi->oxcf.Sharpness;
   if (cpi->initial_width) {
     // Increasing the size of the frame beyond the first seen frame, or some
     // otherwise signalled maximum size, is not supported.
     // TODO(jkoleszar): exit gracefully.
     assert(cm->width <= cpi->initial_width);
     assert(cm->height <= cpi->initial_height);
   }
   update_frame_size(cpi);
   if (cpi->oxcf.fixed_q >= 0) {
     cpi->last_q[0] = cpi->oxcf.fixed_q;
     cpi->last_q[1] = cpi->oxcf.fixed_q;
     cpi->last_boosted_qindex = cpi->oxcf.fixed_q;
   }
   cpi->speed = cpi->oxcf.cpu_used;
   if (cpi->oxcf.lag_in_frames == 0) {
     // force to allowlag to 0 if lag_in_frames is 0;
     cpi->oxcf.allow_lag = 0;
   } else if (cpi->oxcf.lag_in_frames > MAX_LAG_BUFFERS) {
      // Limit on lag buffers as these are not currently dynamically allocated
     cpi->oxcf.lag_in_frames = MAX_LAG_BUFFERS;
   }
   // YX Temp
 #if CONFIG_MULTIPLE_ARF
   vp9_zero(cpi->alt_ref_source);
 #else
   cpi->alt_ref_source = NULL;
 #endif
   cpi->is_src_frame_alt_ref = 0;
 #if 0
   // Experimental RD Code
   cpi->frame_distortion = 0;
   cpi->last_frame_distortion = 0;
 #endif
   set_tile_limits(cpi);
 }
 #define M_LOG2_E 0.693147180559945309417
 #define log2f(x) (log (x) / (float) M_LOG2_E)
 static void cal_nmvjointsadcost(int *mvjointsadcost) {
   mvjointsadcost[0] = 600;
   mvjointsadcost[1] = 300;
   mvjointsadcost[2] = 300;
   mvjointsadcost[0] = 300;
 }
 static void cal_nmvsadcosts(int *mvsadcost[2]) {
   int i = 1;
   mvsadcost[0][0] = 0;
   mvsadcost[1][0] = 0;
   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 <= MV_MAX);
 }
 static void cal_nmvsadcosts_hp(int *mvsadcost[2]) {
   int i = 1;
   mvsadcost[0][0] = 0;
   mvsadcost[1][0] = 0;
   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 <= MV_MAX);
 }
 static void alloc_mode_context(VP9_COMMON *cm, int num_4x4_blk,
                                PICK_MODE_CONTEXT *ctx) {
   int num_pix = num_4x4_blk << 4;
   int i, k;
   ctx->num_4x4_blk = num_4x4_blk;
   CHECK_MEM_ERROR(cm, ctx->zcoeff_blk,
                   vpx_calloc(num_4x4_blk, sizeof(uint8_t)));
   for (i = 0; i < MAX_MB_PLANE; ++i) {
     for (k = 0; k < 3; ++k) {
       CHECK_MEM_ERROR(cm, ctx->coeff[i][k],
                       vpx_memalign(16, num_pix * sizeof(int16_t)));
       CHECK_MEM_ERROR(cm, ctx->qcoeff[i][k],
                       vpx_memalign(16, num_pix * sizeof(int16_t)));
       CHECK_MEM_ERROR(cm, ctx->dqcoeff[i][k],
                       vpx_memalign(16, num_pix * sizeof(int16_t)));
       CHECK_MEM_ERROR(cm, ctx->eobs[i][k],
                       vpx_memalign(16, num_pix * sizeof(uint16_t)));
       ctx->coeff_pbuf[i][k]   = ctx->coeff[i][k];
       ctx->qcoeff_pbuf[i][k]  = ctx->qcoeff[i][k];
       ctx->dqcoeff_pbuf[i][k] = ctx->dqcoeff[i][k];
       ctx->eobs_pbuf[i][k]    = ctx->eobs[i][k];
     }
   }
 }
 static void free_mode_context(PICK_MODE_CONTEXT *ctx) {
   int i, k;
   vpx_free(ctx->zcoeff_blk);
   ctx->zcoeff_blk = 0;
   for (i = 0; i < MAX_MB_PLANE; ++i) {
     for (k = 0; k < 3; ++k) {
       vpx_free(ctx->coeff[i][k]);
       ctx->coeff[i][k] = 0;
       vpx_free(ctx->qcoeff[i][k]);
       ctx->qcoeff[i][k] = 0;
       vpx_free(ctx->dqcoeff[i][k]);
       ctx->dqcoeff[i][k] = 0;
       vpx_free(ctx->eobs[i][k]);
       ctx->eobs[i][k] = 0;
     }
   }
 }
 static void init_pick_mode_context(VP9_COMP *cpi) {
   int i;
   VP9_COMMON *const cm = &cpi->common;
   MACROBLOCK *const x  = &cpi->mb;
   for (i = 0; i < BLOCK_SIZES; ++i) {
     const int num_4x4_w = num_4x4_blocks_wide_lookup[i];
     const int num_4x4_h = num_4x4_blocks_high_lookup[i];
     const int num_4x4_blk = MAX(4, num_4x4_w * num_4x4_h);
     if (i < BLOCK_16X16) {
       for (x->sb_index = 0; x->sb_index < 4; ++x->sb_index) {
         for (x->mb_index = 0; x->mb_index < 4; ++x->mb_index) {
           for (x->b_index = 0; x->b_index < 16 / num_4x4_blk; ++x->b_index) {
             PICK_MODE_CONTEXT *ctx = get_block_context(x, i);
             alloc_mode_context(cm, num_4x4_blk, ctx);
           }
         }
       }
     } else if (i < BLOCK_32X32) {
       for (x->sb_index = 0; x->sb_index < 4; ++x->sb_index) {
         for (x->mb_index = 0; x->mb_index < 64 / num_4x4_blk; ++x->mb_index) {
           PICK_MODE_CONTEXT *ctx = get_block_context(x, i);
           ctx->num_4x4_blk = num_4x4_blk;
           alloc_mode_context(cm, num_4x4_blk, ctx);
         }
       }
     } else if (i < BLOCK_64X64) {
       for (x->sb_index = 0; x->sb_index < 256 / num_4x4_blk; ++x->sb_index) {
         PICK_MODE_CONTEXT *ctx = get_block_context(x, i);
         ctx->num_4x4_blk = num_4x4_blk;
         alloc_mode_context(cm, num_4x4_blk, ctx);
       }
     } else {
       PICK_MODE_CONTEXT *ctx = get_block_context(x, i);
       ctx->num_4x4_blk = num_4x4_blk;
       alloc_mode_context(cm, num_4x4_blk, ctx);
     }
   }
 }
 static void free_pick_mode_context(MACROBLOCK *x) {
   int i;
   for (i = 0; i < BLOCK_SIZES; ++i) {
     const int num_4x4_w = num_4x4_blocks_wide_lookup[i];
     const int num_4x4_h = num_4x4_blocks_high_lookup[i];
     const int num_4x4_blk = MAX(4, num_4x4_w * num_4x4_h);
     if (i < BLOCK_16X16) {
       for (x->sb_index = 0; x->sb_index < 4; ++x->sb_index) {
         for (x->mb_index = 0; x->mb_index < 4; ++x->mb_index) {
           for (x->b_index = 0; x->b_index < 16 / num_4x4_blk; ++x->b_index) {
             PICK_MODE_CONTEXT *ctx = get_block_context(x, i);
             free_mode_context(ctx);
           }
         }
       }
     } else if (i < BLOCK_32X32) {
       for (x->sb_index = 0; x->sb_index < 4; ++x->sb_index) {
         for (x->mb_index = 0; x->mb_index < 64 / num_4x4_blk; ++x->mb_index) {
           PICK_MODE_CONTEXT *ctx = get_block_context(x, i);
           free_mode_context(ctx);
         }
       }
     } else if (i < BLOCK_64X64) {
       for (x->sb_index = 0; x->sb_index < 256 / num_4x4_blk; ++x->sb_index) {
         PICK_MODE_CONTEXT *ctx = get_block_context(x, i);
         free_mode_context(ctx);
       }
     } else {
       PICK_MODE_CONTEXT *ctx = get_block_context(x, i);
       free_mode_context(ctx);
     }
   }
 }
 VP9_PTR vp9_create_compressor(VP9_CONFIG *oxcf) {
   int i, j;
   volatile union {
     VP9_COMP *cpi;
     VP9_PTR   ptr;
   } ctx;
   VP9_COMP *cpi;
   VP9_COMMON *cm;
   cpi = ctx.cpi = vpx_memalign(32, sizeof(VP9_COMP));
   // Check that the CPI instance is valid
   if (!cpi)
     return 0;
   cm = &cpi->common;
   vp9_zero(*cpi);
   if (setjmp(cm->error.jmp)) {
     VP9_PTR ptr = ctx.ptr;
     ctx.cpi->common.error.setjmp = 0;
     vp9_remove_compressor(&ptr);
     return 0;
   }
   cm->error.setjmp = 1;
   CHECK_MEM_ERROR(cm, cpi->mb.ss, vpx_calloc(sizeof(search_site),
                                              (MAX_MVSEARCH_STEPS * 8) + 1));
   vp9_create_common(cm);
   init_config((VP9_PTR)cpi, oxcf);
   init_pick_mode_context(cpi);
   cm->current_video_frame   = 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;
   // Set reference frame sign bias for ALTREF frame to 1 (for now)
   cm->ref_frame_sign_bias[ALTREF_FRAME] = 1;
   cpi->baseline_gf_interval = DEFAULT_GF_INTERVAL;
   cpi->gold_is_last = 0;
   cpi->alt_is_last  = 0;
   cpi->gold_is_alt  = 0;
   // Spatial scalability
   cpi->number_spatial_layers = oxcf->ss_number_layers;
   // Create the encoder segmentation map and set all entries to 0
   CHECK_MEM_ERROR(cm, cpi->segmentation_map,
                   vpx_calloc(cm->mi_rows * cm->mi_cols, 1));
   // And a place holder structure is the coding context
   // for use if we want to save and restore it
   CHECK_MEM_ERROR(cm, cpi->coding_context.last_frame_seg_map_copy,
                   vpx_calloc(cm->mi_rows * cm->mi_cols, 1));
   CHECK_MEM_ERROR(cm, cpi->active_map, vpx_calloc(cm->MBs, 1));
   vpx_memset(cpi->active_map, 1, cm->MBs);
   cpi->active_map_enabled = 0;
   for (i = 0; i < (sizeof(cpi->mbgraph_stats) /
                    sizeof(cpi->mbgraph_stats[0])); i++) {
     CHECK_MEM_ERROR(cm, cpi->mbgraph_stats[i].mb_stats,
                     vpx_calloc(cm->MBs *
                                sizeof(*cpi->mbgraph_stats[i].mb_stats), 1));
   }
 #ifdef ENTROPY_STATS
   if (cpi->pass != 1)
     init_context_counters();
 #endif
 #ifdef MODE_STATS
   init_tx_count_stats();
   init_switchable_interp_stats();
 #endif
   /*Initialize the feed-forward activity masking.*/
   cpi->activity_avg = 90 << 12;
   cpi->frames_since_key = 8;  // Sensible default for first frame.
   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->refresh_alt_ref_frame = 0;
 #if CONFIG_MULTIPLE_ARF
   // Turn multiple ARF usage on/off. This is a quick hack for the initial test
   // version. It should eventually be set via the codec API.
   cpi->multi_arf_enabled = 1;
   if (cpi->multi_arf_enabled) {
     cpi->sequence_number = 0;
     cpi->frame_coding_order_period = 0;
     vp9_zero(cpi->frame_coding_order);
     vp9_zero(cpi->arf_buffer_idx);
   }
 #endif
   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;
     cpi->summedp_quality = 0;
     cpi->summedp_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 = INT64_MAX;
   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->tot_q = 0.0;
   cpi->avg_q = vp9_convert_qindex_to_q(cpi->oxcf.worst_allowed_q);
   cpi->total_byte_count             = 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;
   cal_nmvjointsadcost(cpi->mb.nmvjointsadcost);
   cpi->mb.nmvcost[0] = &cpi->mb.nmvcosts[0][MV_MAX];
   cpi->mb.nmvcost[1] = &cpi->mb.nmvcosts[1][MV_MAX];
   cpi->mb.nmvsadcost[0] = &cpi->mb.nmvsadcosts[0][MV_MAX];
   cpi->mb.nmvsadcost[1] = &cpi->mb.nmvsadcosts[1][MV_MAX];
   cal_nmvsadcosts(cpi->mb.nmvsadcost);
   cpi->mb.nmvcost_hp[0] = &cpi->mb.nmvcosts_hp[0][MV_MAX];
   cpi->mb.nmvcost_hp[1] = &cpi->mb.nmvcosts_hp[1][MV_MAX];
   cpi->mb.nmvsadcost_hp[0] = &cpi->mb.nmvsadcosts_hp[0][MV_MAX];
   cpi->mb.nmvsadcost_hp[1] = &cpi->mb.nmvsadcosts_hp[1][MV_MAX];
   cal_nmvsadcosts_hp(cpi->mb.nmvsadcost_hp);
   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
 #ifdef OUTPUT_YUV_REC
   yuv_rec_file = fopen("rec.yuv", "wb");
 #endif
 #if 0
   framepsnr = fopen("framepsnr.stt", "a");
   kf_list = fopen("kf_list.stt", "w");
 #endif
   cpi->output_pkt_list = oxcf->output_pkt_list;
   cpi->enable_encode_breakout = 1;
   if (cpi->pass == 1) {
     vp9_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);
     vp9_init_second_pass(cpi);
   }
   vp9_set_speed_features(cpi);
   // Default rd threshold factors for mode selection
   for (i = 0; i < BLOCK_SIZES; ++i) {
     for (j = 0; j < MAX_MODES; ++j)
       cpi->rd_thresh_freq_fact[i][j] = 32;
     for (j = 0; j < MAX_REFS; ++j)
       cpi->rd_thresh_freq_sub8x8[i][j] = 32;
   }
 #define BFP(BT, SDF, SDAF, VF, SVF, SVAF, SVFHH, SVFHV, SVFHHV, \
             SDX3F, SDX8F, SDX4DF)\
     cpi->fn_ptr[BT].sdf            = SDF; \
     cpi->fn_ptr[BT].sdaf           = SDAF; \
     cpi->fn_ptr[BT].vf             = VF; \
     cpi->fn_ptr[BT].svf            = SVF; \
     cpi->fn_ptr[BT].svaf           = SVAF; \
     cpi->fn_ptr[BT].svf_halfpix_h  = SVFHH; \
     cpi->fn_ptr[BT].svf_halfpix_v  = SVFHV; \
     cpi->fn_ptr[BT].svf_halfpix_hv = SVFHHV; \
     cpi->fn_ptr[BT].sdx3f          = SDX3F; \
     cpi->fn_ptr[BT].sdx8f          = SDX8F; \
     cpi->fn_ptr[BT].sdx4df         = SDX4DF;
   BFP(BLOCK_32X16, vp9_sad32x16, vp9_sad32x16_avg,
       vp9_variance32x16, vp9_sub_pixel_variance32x16,
       vp9_sub_pixel_avg_variance32x16, NULL, NULL,
       NULL, NULL, NULL,
       vp9_sad32x16x4d)
   BFP(BLOCK_16X32, vp9_sad16x32, vp9_sad16x32_avg,
       vp9_variance16x32, vp9_sub_pixel_variance16x32,
       vp9_sub_pixel_avg_variance16x32, NULL, NULL,
       NULL, NULL, NULL,
       vp9_sad16x32x4d)
   BFP(BLOCK_64X32, vp9_sad64x32, vp9_sad64x32_avg,
       vp9_variance64x32, vp9_sub_pixel_variance64x32,
       vp9_sub_pixel_avg_variance64x32, NULL, NULL,
       NULL, NULL, NULL,
       vp9_sad64x32x4d)
   BFP(BLOCK_32X64, vp9_sad32x64, vp9_sad32x64_avg,
       vp9_variance32x64, vp9_sub_pixel_variance32x64,
       vp9_sub_pixel_avg_variance32x64, NULL, NULL,
       NULL, NULL, NULL,
       vp9_sad32x64x4d)
   BFP(BLOCK_32X32, vp9_sad32x32, vp9_sad32x32_avg,
       vp9_variance32x32, vp9_sub_pixel_variance32x32,
       vp9_sub_pixel_avg_variance32x32, vp9_variance_halfpixvar32x32_h,
       vp9_variance_halfpixvar32x32_v,
       vp9_variance_halfpixvar32x32_hv, vp9_sad32x32x3, vp9_sad32x32x8,
       vp9_sad32x32x4d)
   BFP(BLOCK_64X64, vp9_sad64x64, vp9_sad64x64_avg,
       vp9_variance64x64, vp9_sub_pixel_variance64x64,
       vp9_sub_pixel_avg_variance64x64, vp9_variance_halfpixvar64x64_h,
       vp9_variance_halfpixvar64x64_v,
       vp9_variance_halfpixvar64x64_hv, vp9_sad64x64x3, vp9_sad64x64x8,
       vp9_sad64x64x4d)
   BFP(BLOCK_16X16, vp9_sad16x16, vp9_sad16x16_avg,
       vp9_variance16x16, vp9_sub_pixel_variance16x16,
       vp9_sub_pixel_avg_variance16x16, vp9_variance_halfpixvar16x16_h,
       vp9_variance_halfpixvar16x16_v,
       vp9_variance_halfpixvar16x16_hv, vp9_sad16x16x3, vp9_sad16x16x8,
       vp9_sad16x16x4d)
   BFP(BLOCK_16X8, vp9_sad16x8, vp9_sad16x8_avg,
       vp9_variance16x8, vp9_sub_pixel_variance16x8,
       vp9_sub_pixel_avg_variance16x8, NULL, NULL, NULL,
       vp9_sad16x8x3, vp9_sad16x8x8, vp9_sad16x8x4d)
   BFP(BLOCK_8X16, vp9_sad8x16, vp9_sad8x16_avg,
       vp9_variance8x16, vp9_sub_pixel_variance8x16,
       vp9_sub_pixel_avg_variance8x16, NULL, NULL, NULL,
       vp9_sad8x16x3, vp9_sad8x16x8, vp9_sad8x16x4d)
   BFP(BLOCK_8X8, vp9_sad8x8, vp9_sad8x8_avg,
       vp9_variance8x8, vp9_sub_pixel_variance8x8,
       vp9_sub_pixel_avg_variance8x8, NULL, NULL, NULL,
       vp9_sad8x8x3, vp9_sad8x8x8, vp9_sad8x8x4d)
   BFP(BLOCK_8X4, vp9_sad8x4, vp9_sad8x4_avg,
       vp9_variance8x4, vp9_sub_pixel_variance8x4,
       vp9_sub_pixel_avg_variance8x4, NULL, NULL,
       NULL, NULL, vp9_sad8x4x8,
       vp9_sad8x4x4d)
   BFP(BLOCK_4X8, vp9_sad4x8, vp9_sad4x8_avg,
       vp9_variance4x8, vp9_sub_pixel_variance4x8,
       vp9_sub_pixel_avg_variance4x8, NULL, NULL,
       NULL, NULL, vp9_sad4x8x8,
       vp9_sad4x8x4d)
   BFP(BLOCK_4X4, vp9_sad4x4, vp9_sad4x4_avg,
       vp9_variance4x4, vp9_sub_pixel_variance4x4,
       vp9_sub_pixel_avg_variance4x4, NULL, NULL, NULL,
       vp9_sad4x4x3, vp9_sad4x4x8, vp9_sad4x4x4d)
   cpi->full_search_sad = vp9_full_search_sad;
   cpi->diamond_search_sad = vp9_diamond_search_sad;
   cpi->refining_search_sad = vp9_refining_search_sad;
   // make sure frame 1 is okay
   cpi->error_bins[0] = cpi->common.MBs;
   /* vp9_init_quantizer() is first called here. Add check in
    * vp9_frame_init_quantizer() so that vp9_init_quantizer is only
    * called later when needed. This will avoid unnecessary calls of
    * vp9_init_quantizer() for every frame.
    */
   vp9_init_quantizer(cpi);
   vp9_loop_filter_init(cm);
   cpi->common.error.setjmp = 0;
   vp9_zero(cpi->y_uv_mode_count);
 #ifdef MODE_TEST_HIT_STATS
   vp9_zero(cpi->mode_test_hits);
 #endif
   return (VP9_PTR) cpi;
 }
 void vp9_remove_compressor(VP9_PTR *ptr) {
   VP9_COMP *cpi = (VP9_COMP *)(*ptr);
   int i;
   if (!cpi)
     return;
   if (cpi && (cpi->common.current_video_frame > 0)) {
     if (cpi->pass == 2) {
       vp9_end_second_pass(cpi);
     }
 #ifdef ENTROPY_STATS
     if (cpi->pass != 1) {
       print_context_counters();
       print_tree_update_probs();
       print_mode_context(cpi);
     }
 #endif
 #ifdef MODE_STATS
     if (cpi->pass != 1) {
       write_tx_count_stats();
       write_switchable_interp_stats();
     }
 #endif
 #if CONFIG_INTERNAL_STATS
     vp9_clear_system_state();
     // printf("\n8x8-4x4:%d-%d\n", cpi->t8x8_count, cpi->t4x4_count);
     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 * (double) 8 / (double)1000
                   / time_encoded;
       if (cpi->b_calculate_psnr) {
         YV12_BUFFER_CONFIG *lst_yv12 =
             &cpi->common.yv12_fb[cpi->common.ref_frame_map[cpi->lst_fb_idx]];
         double samples = 3.0 / 2 * cpi->count *
                          lst_yv12->y_width * lst_yv12->y_height;
         double total_psnr = vp9_mse2psnr(samples, 255.0, cpi->total_sq_error);
         double total_psnr2 = vp9_mse2psnr(samples, 255.0, cpi->total_sq_error2);
         double total_ssim = 100 * pow(cpi->summed_quality /
                                       cpi->summed_weights, 8.0);
         double total_ssimp = 100 * pow(cpi->summedp_quality /
                                        cpi->summedp_weights, 8.0);
         fprintf(f, "Bitrate\tAVGPsnr\tGLBPsnr\tAVPsnrP\tGLPsnrP\t"
                 "VPXSSIM\tVPSSIMP\t  Time(ms)\n");
         fprintf(f, "%7.2f\t%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_ssimp,
                 total_encode_time);
       }
       if (cpi->b_calculate_ssimg) {
         fprintf(f, "BitRate\tSSIM_Y\tSSIM_U\tSSIM_V\tSSIM_A\t  Time(ms)\n");
         fprintf(f, "%7.2f\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);
     }
 #endif
 #ifdef MODE_TEST_HIT_STATS
     if (cpi->pass != 1) {
       double norm_per_pixel_mode_tests = 0;
       double norm_counts[BLOCK_SIZES];
       int i;
       int sb64_per_frame;
       int norm_factors[BLOCK_SIZES] =
         {256, 128, 128, 64, 32, 32, 16, 8, 8, 4, 2, 2, 1};
       FILE *f = fopen("mode_hit_stats.stt", "a");
       // On average, how many mode tests do we do
       for (i = 0; i < BLOCK_SIZES; ++i) {
         norm_counts[i] = (double)cpi->mode_test_hits[i] /
                          (double)norm_factors[i];
         norm_per_pixel_mode_tests += norm_counts[i];
       }
       // Convert to a number per 64x64 and per frame
       sb64_per_frame = ((cpi->common.height + 63) / 64) *
                        ((cpi->common.width + 63) / 64);
       norm_per_pixel_mode_tests =
         norm_per_pixel_mode_tests /
         (double)(cpi->common.current_video_frame * sb64_per_frame);
       fprintf(f, "%6.4f\n", norm_per_pixel_mode_tests);
       fclose(f);
     }
 #endif
 #ifdef ENTROPY_STATS
     {
       int i, j, k;
       FILE *fmode = fopen("vp9_modecontext.c", "w");
       fprintf(fmode, "\n#include \"vp9_entropymode.h\"\n\n");
       fprintf(fmode, "const unsigned int vp9_kf_default_bmode_counts ");
       fprintf(fmode, "[INTRA_MODES][INTRA_MODES]"
                      "[INTRA_MODES] =\n{\n");
       for (i = 0; i < INTRA_MODES; i++) {
         fprintf(fmode, "    { // Above Mode :  %d\n", i);
         for (j = 0; j < INTRA_MODES; j++) {
           fprintf(fmode, "        {");
           for (k = 0; k < INTRA_MODES; 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_sb_row / 1000,
              cpi->time_compress_data / 1000,
              (cpi->time_receive_data + cpi->time_compress_data) / 1000);
     }
 #endif
   }
   free_pick_mode_context(&cpi->mb);
   dealloc_compressor_data(cpi);
   vpx_free(cpi->mb.ss);
   vpx_free(cpi->tok);
   for (i = 0; i < sizeof(cpi->mbgraph_stats) /
                   sizeof(cpi->mbgraph_stats[0]); ++i) {
     vpx_free(cpi->mbgraph_stats[i].mb_stats);
   }
   vp9_remove_common(&cpi->common);
   vpx_free(cpi);
   *ptr = 0;
 #ifdef OUTPUT_YUV_SRC
   fclose(yuv_file);
 #endif
 #ifdef OUTPUT_YUV_REC
   fclose(yuv_rec_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(uint8_t *orig, int orig_stride,
                                  uint8_t *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;
       vp9_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;
       uint8_t *border_orig = orig;
       uint8_t *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;
   }
   return total_sse;
 }
 static void generate_psnr_packet(VP9_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 = orig->y_crop_width;
   unsigned int             height = orig->y_crop_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 = orig->uv_crop_width;
   height = orig->uv_crop_height;
   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] = vp9_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 vp9_use_as_reference(VP9_PTR ptr, int ref_frame_flags) {
   VP9_COMP *cpi = (VP9_COMP *)(ptr);
   if (ref_frame_flags > 7)
     return -1;
   cpi->ref_frame_flags = ref_frame_flags;
   return 0;
 }
 int vp9_update_reference(VP9_PTR ptr, int ref_frame_flags) {
   VP9_COMP *cpi = (VP9_COMP *)(ptr);
   if (ref_frame_flags > 7)
     return -1;
   cpi->refresh_golden_frame = 0;
   cpi->refresh_alt_ref_frame = 0;
   cpi->refresh_last_frame   = 0;
   if (ref_frame_flags & VP9_LAST_FLAG)
     cpi->refresh_last_frame = 1;
   if (ref_frame_flags & VP9_GOLD_FLAG)
     cpi->refresh_golden_frame = 1;
   if (ref_frame_flags & VP9_ALT_FLAG)
     cpi->refresh_alt_ref_frame = 1;
   return 0;
 }
 int vp9_copy_reference_enc(VP9_PTR ptr, VP9_REFFRAME ref_frame_flag,
                            YV12_BUFFER_CONFIG *sd) {
   VP9_COMP *cpi = (VP9_COMP *)(ptr);
   VP9_COMMON *cm = &cpi->common;
   int ref_fb_idx;
   if (ref_frame_flag == VP9_LAST_FLAG)
     ref_fb_idx = cm->ref_frame_map[cpi->lst_fb_idx];
   else if (ref_frame_flag == VP9_GOLD_FLAG)
     ref_fb_idx = cm->ref_frame_map[cpi->gld_fb_idx];
   else if (ref_frame_flag == VP9_ALT_FLAG)
     ref_fb_idx = cm->ref_frame_map[cpi->alt_fb_idx];
   else
     return -1;
   vp8_yv12_copy_frame(&cm->yv12_fb[ref_fb_idx], sd);
   return 0;
 }
 int vp9_get_reference_enc(VP9_PTR ptr, int index, YV12_BUFFER_CONFIG **fb) {
   VP9_COMP *cpi = (VP9_COMP *)(ptr);
   VP9_COMMON *cm = &cpi->common;
   if (index < 0 || index >= NUM_REF_FRAMES)
     return -1;
   *fb = &cm->yv12_fb[cm->ref_frame_map[index]];
   return 0;
 }
 int vp9_set_reference_enc(VP9_PTR ptr, VP9_REFFRAME ref_frame_flag,
                           YV12_BUFFER_CONFIG *sd) {
   VP9_COMP *cpi = (VP9_COMP *)(ptr);
   VP9_COMMON *cm = &cpi->common;
   int ref_fb_idx;
   if (ref_frame_flag == VP9_LAST_FLAG)
     ref_fb_idx = cm->ref_frame_map[cpi->lst_fb_idx];
   else if (ref_frame_flag == VP9_GOLD_FLAG)
     ref_fb_idx = cm->ref_frame_map[cpi->gld_fb_idx];
   else if (ref_frame_flag == VP9_ALT_FLAG)
     ref_fb_idx = cm->ref_frame_map[cpi->alt_fb_idx];
   else
     return -1;
   vp8_yv12_copy_frame(sd, &cm->yv12_fb[ref_fb_idx]);
   return 0;
 }
 int vp9_update_entropy(VP9_PTR comp, int update) {
   ((VP9_COMP *)comp)->common.refresh_frame_context = update;
   return 0;
 }
 #ifdef OUTPUT_YUV_SRC
 void vp9_write_yuv_frame(YV12_BUFFER_CONFIG *s) {
   uint8_t *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);
 }
 #endif
 #ifdef OUTPUT_YUV_REC
 void vp9_write_yuv_rec_frame(VP9_COMMON *cm) {
   YV12_BUFFER_CONFIG *s = cm->frame_to_show;
   uint8_t *src = s->y_buffer;
   int h = cm->height;
   do {
     fwrite(src, s->y_width, 1,  yuv_rec_file);
     src += s->y_stride;
   } while (--h);
   src = s->u_buffer;
   h = s->uv_height;
   do {
     fwrite(src, s->uv_width, 1,  yuv_rec_file);
     src += s->uv_stride;
   } while (--h);
   src = s->v_buffer;
   h = s->uv_height;
   do {
     fwrite(src, s->uv_width, 1, yuv_rec_file);
     src += s->uv_stride;
   } while (--h);
 #if CONFIG_ALPHA
   if (s->alpha_buffer) {
     src = s->alpha_buffer;
     h = s->alpha_height;
     do {
       fwrite(src, s->alpha_width, 1,  yuv_rec_file);
       src += s->alpha_stride;
     } while (--h);
   }
 #endif
   fflush(yuv_rec_file);
 }
 #endif
 static void scale_and_extend_frame(YV12_BUFFER_CONFIG *src_fb,
                                    YV12_BUFFER_CONFIG *dst_fb) {
   const int in_w = src_fb->y_crop_width;
   const int in_h = src_fb->y_crop_height;
   const int out_w = dst_fb->y_crop_width;
   const int out_h = dst_fb->y_crop_height;
   int x, y, i;
   uint8_t *srcs[4] = {src_fb->y_buffer, src_fb->u_buffer, src_fb->v_buffer,
                       src_fb->alpha_buffer};
   int src_strides[4] = {src_fb->y_stride, src_fb->uv_stride, src_fb->uv_stride,
                         src_fb->alpha_stride};
   uint8_t *dsts[4] = {dst_fb->y_buffer, dst_fb->u_buffer, dst_fb->v_buffer,
                       dst_fb->alpha_buffer};
   int dst_strides[4] = {dst_fb->y_stride, dst_fb->uv_stride, dst_fb->uv_stride,
                         dst_fb->alpha_stride};
   for (y = 0; y < out_h; y += 16) {
     for (x = 0; x < out_w; x += 16) {
       for (i = 0; i < MAX_MB_PLANE; ++i) {
         const int factor = i == 0 ? 1 : 2;
         const int x_q4 = x * (16 / factor) * in_w / out_w;
         const int y_q4 = y * (16 / factor) * in_h / out_h;
         const int src_stride = src_strides[i];
         const int dst_stride = dst_strides[i];
         uint8_t *src = srcs[i] + y / factor * in_h / out_h * src_stride +
                                  x / factor * in_w / out_w;
         uint8_t *dst = dsts[i] + y / factor * dst_stride + x / factor;
         vp9_convolve8(src, src_stride, dst, dst_stride,
                       vp9_sub_pel_filters_8[x_q4 & 0xf], 16 * in_w / out_w,
                       vp9_sub_pel_filters_8[y_q4 & 0xf], 16 * in_h / out_h,
 / factor, 16 / factor);
       }
     }
   }
   vp8_yv12_extend_frame_borders(dst_fb);
 }
 static void update_alt_ref_frame_stats(VP9_COMP *cpi) {
   // this frame refreshes means next frames don't unless specified by user
   cpi->frames_since_golden = 0;
 #if CONFIG_MULTIPLE_ARF
   if (!cpi->multi_arf_enabled)
 #endif
     // 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(VP9_COMP *cpi) {
   // Update the Golden frame usage counts.
   if (cpi->refresh_golden_frame) {
     // this frame refreshes means next frames don't unless specified by user
     cpi->refresh_golden_frame = 0;
     cpi->frames_since_golden = 0;
     // ******** 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->refresh_alt_ref_frame) {
       cpi->source_alt_ref_pending = 1;
       cpi->frames_till_gf_update_due = cpi->baseline_gf_interval;
       // TODO(ivan): For SVC encoder, GF automatic update is disabled by using
       // a large GF_interval.
       if (cpi->use_svc) {
         cpi->frames_till_gf_update_due = INT_MAX;
       }
     }
     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->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++;
   }
 }
 static int find_fp_qindex() {
   int i;
   for (i = 0; i < QINDEX_RANGE; i++) {
     if (vp9_convert_qindex_to_q(i) >= 30.0) {
       break;
     }
   }
   if (i == QINDEX_RANGE)
     i--;
   return i;
 }
 static void Pass1Encode(VP9_COMP *cpi, unsigned long *size, unsigned char *dest,
                         unsigned int *frame_flags) {
   (void) size;
   (void) dest;
   (void) frame_flags;
   vp9_set_quantizer(cpi, find_fp_qindex());
   vp9_first_pass(cpi);
 }
 #define WRITE_RECON_BUFFER 0
 #if WRITE_RECON_BUFFER
 void write_cx_frame_to_file(YV12_BUFFER_CONFIG *frame, int this_frame) {
   FILE *yframe;
   int i;
   char filename[255];
   snprintf(filename, sizeof(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);
   snprintf(filename, sizeof(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);
   snprintf(filename, sizeof(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
 static double compute_edge_pixel_proportion(YV12_BUFFER_CONFIG *frame) {
 #define EDGE_THRESH 128
   int i, j;
   int num_edge_pels = 0;
   int num_pels = (frame->y_height - 2) * (frame->y_width - 2);
   uint8_t *prev = frame->y_buffer + 1;
   uint8_t *curr = frame->y_buffer + 1 + frame->y_stride;
   uint8_t *next = frame->y_buffer + 1 + 2 * frame->y_stride;
   for (i = 1; i < frame->y_height - 1; i++) {
     for (j = 1; j < frame->y_width - 1; j++) {
       /* Sobel hor and ver gradients */
       int v = 2 * (curr[1] - curr[-1]) + (prev[1] - prev[-1]) +
               (next[1] - next[-1]);
       int h = 2 * (prev[0] - next[0]) + (prev[1] - next[1]) +
               (prev[-1] - next[-1]);
       h = (h < 0 ? -h : h);
       v = (v < 0 ? -v : v);
       if (h > EDGE_THRESH || v > EDGE_THRESH)
         num_edge_pels++;
       curr++;
       prev++;
       next++;
     }
     curr += frame->y_stride - frame->y_width + 2;
     prev += frame->y_stride - frame->y_width + 2;
     next += frame->y_stride - frame->y_width + 2;
   }
   return (double)num_edge_pels / num_pels;
 }
 // Function to test for conditions that indicate we should loop
 // back and recode a frame.
 static int recode_loop_test(VP9_COMP *cpi,
                             int high_limit, int low_limit,
                             int q, int maxq, int minq) {
   int force_recode = 0;
   VP9_COMMON *cm = &cpi->common;
   // Is frame recode allowed at all
   // Yes if either recode mode 1 is selected or mode two is selected
   // 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) ||
         cpi->refresh_golden_frame ||
         cpi->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;
     } else if (cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY) {
       // Deal with frame undershoot and whether or not we are
       // below the automatically set cq level.
       if (q > cpi->cq_target_quality &&
           cpi->projected_frame_size < ((cpi->this_frame_target * 7) >> 3)) {
         force_recode = 1;
       } else if (q > cpi->oxcf.cq_level &&
                  cpi->projected_frame_size < cpi->min_frame_bandwidth &&
                  cpi->active_best_quality > cpi->oxcf.cq_level) {
         // Severe undershoot and between auto and user cq level
         force_recode = 1;
         cpi->active_best_quality = cpi->oxcf.cq_level;
       }
     }
   }
   return force_recode;
 }
 static void update_reference_frames(VP9_COMP * const cpi) {
   VP9_COMMON * const cm = &cpi->common;
   // 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) {
     ref_cnt_fb(cm->fb_idx_ref_cnt,
                &cm->ref_frame_map[cpi->gld_fb_idx], cm->new_fb_idx);
     ref_cnt_fb(cm->fb_idx_ref_cnt,
                &cm->ref_frame_map[cpi->alt_fb_idx], cm->new_fb_idx);
   }
 #if CONFIG_MULTIPLE_ARF
   else if (!cpi->multi_arf_enabled && cpi->refresh_golden_frame &&
       !cpi->refresh_alt_ref_frame) {
 #else
   else if (cpi->refresh_golden_frame && !cpi->refresh_alt_ref_frame &&
            !cpi->use_svc) {
 #endif
     /* Preserve the previously existing golden frame and update the frame in
      * the alt ref slot instead. This is highly specific to the current use of
      * alt-ref as a forward reference, and this needs to be generalized as
      * other uses are implemented (like RTC/temporal scaling)
      *
      * The update to the buffer in the alt ref slot was signaled in
      * vp9_pack_bitstream(), now swap the buffer pointers so that it's treated
      * as the golden frame next time.
      */
     int tmp;
     ref_cnt_fb(cm->fb_idx_ref_cnt,
                &cm->ref_frame_map[cpi->alt_fb_idx], cm->new_fb_idx);
     tmp = cpi->alt_fb_idx;
     cpi->alt_fb_idx = cpi->gld_fb_idx;
     cpi->gld_fb_idx = tmp;
   }  else { /* For non key/golden frames */
     if (cpi->refresh_alt_ref_frame) {
       int arf_idx = cpi->alt_fb_idx;
 #if CONFIG_MULTIPLE_ARF
       if (cpi->multi_arf_enabled) {
         arf_idx = cpi->arf_buffer_idx[cpi->sequence_number + 1];
       }
 #endif
       ref_cnt_fb(cm->fb_idx_ref_cnt,
                  &cm->ref_frame_map[arf_idx], cm->new_fb_idx);
     }
     if (cpi->refresh_golden_frame) {
       ref_cnt_fb(cm->fb_idx_ref_cnt,
                  &cm->ref_frame_map[cpi->gld_fb_idx], cm->new_fb_idx);
     }
   }
   if (cpi->refresh_last_frame) {
     ref_cnt_fb(cm->fb_idx_ref_cnt,
                &cm->ref_frame_map[cpi->lst_fb_idx], cm->new_fb_idx);
   }
 }
 static void loopfilter_frame(VP9_COMP *cpi, VP9_COMMON *cm) {
   MACROBLOCKD *xd = &cpi->mb.e_mbd;
   struct loopfilter *lf = &cm->lf;
   if (xd->lossless) {
       lf->filter_level = 0;
   } else {
     struct vpx_usec_timer timer;
     vp9_clear_system_state();
     vpx_usec_timer_start(&timer);
     vp9_pick_filter_level(cpi->Source, cpi, cpi->sf.use_fast_lpf_pick);
     vpx_usec_timer_mark(&timer);
     cpi->time_pick_lpf += vpx_usec_timer_elapsed(&timer);
   }
   if (lf->filter_level > 0) {
     vp9_set_alt_lf_level(cpi, lf->filter_level);
     vp9_loop_filter_frame(cm, xd, lf->filter_level, 0, 0);
   }
   vp9_extend_frame_inner_borders(cm->frame_to_show,
                                  cm->subsampling_x, cm->subsampling_y);
 }
 static void scale_references(VP9_COMP *cpi) {
   VP9_COMMON *cm = &cpi->common;
   int i;
   int refs[ALLOWED_REFS_PER_FRAME] = {cpi->lst_fb_idx, cpi->gld_fb_idx,
                                       cpi->alt_fb_idx};
   for (i = 0; i < 3; i++) {
     YV12_BUFFER_CONFIG *ref = &cm->yv12_fb[cm->ref_frame_map[refs[i]]];
     if (ref->y_crop_width != cm->width ||
         ref->y_crop_height != cm->height) {
       int new_fb = get_free_fb(cm);
       vp9_realloc_frame_buffer(&cm->yv12_fb[new_fb],
                                cm->width, cm->height,
                                cm->subsampling_x, cm->subsampling_y,
                                VP9BORDERINPIXELS);
       scale_and_extend_frame(ref, &cm->yv12_fb[new_fb]);
       cpi->scaled_ref_idx[i] = new_fb;
     } else {
       cpi->scaled_ref_idx[i] = cm->ref_frame_map[refs[i]];
       cm->fb_idx_ref_cnt[cm->ref_frame_map[refs[i]]]++;
     }
   }
 }
 static void release_scaled_references(VP9_COMP *cpi) {
   VP9_COMMON *cm = &cpi->common;
   int i;
   for (i = 0; i < 3; i++)
     cm->fb_idx_ref_cnt[cpi->scaled_ref_idx[i]]--;
 }
 static void full_to_model_count(unsigned int *model_count,
                                 unsigned int *full_count) {
   int n;
   model_count[ZERO_TOKEN] = full_count[ZERO_TOKEN];
   model_count[ONE_TOKEN] = full_count[ONE_TOKEN];
   model_count[TWO_TOKEN] = full_count[TWO_TOKEN];
   for (n = THREE_TOKEN; n < DCT_EOB_TOKEN; ++n)
     model_count[TWO_TOKEN] += full_count[n];
   model_count[DCT_EOB_MODEL_TOKEN] = full_count[DCT_EOB_TOKEN];
 }
 static void full_to_model_counts(
     vp9_coeff_count_model *model_count, vp9_coeff_count *full_count) {
   int i, j, k, l;
   for (i = 0; i < BLOCK_TYPES; ++i)
     for (j = 0; j < REF_TYPES; ++j)
       for (k = 0; k < COEF_BANDS; ++k)
         for (l = 0; l < PREV_COEF_CONTEXTS; ++l) {
           if (l >= 3 && k == 0)
             continue;
           full_to_model_count(model_count[i][j][k][l], full_count[i][j][k][l]);
         }
 }
 #if 0 && CONFIG_INTERNAL_STATS
 static void output_frame_level_debug_stats(VP9_COMP *cpi) {
   VP9_COMMON *const cm = &cpi->common;
   FILE *const f = fopen("tmp.stt", cm->current_video_frame ? "a" : "w");
   int recon_err;
   vp9_clear_system_state();  // __asm emms;
   recon_err = vp9_calc_ss_err(cpi->Source, get_frame_new_buffer(cm));
   if (cpi->twopass.total_left_stats.coded_error != 0.0)
     fprintf(f, "%10d %10d %10d %10d %10d %10d %10d %10d %10d"
         "%7.2f %7.2f %7.2f %7.2f %7.2f %7.2f %7.2f"
         "%6d %6d %5d %5d %5d %8.2f %10d %10.3f"
         "%10.3f %8d %10d %10d %10d\n",
         cpi->common.current_video_frame, cpi->this_frame_target,
         cpi->projected_frame_size, 0,
         (cpi->projected_frame_size - cpi->this_frame_target),
         (int)cpi->total_target_vs_actual,
         (int)(cpi->oxcf.starting_buffer_level - cpi->bits_off_target),
         (int)cpi->total_actual_bits, cm->base_qindex,
         vp9_convert_qindex_to_q(cm->base_qindex),
         (double)vp9_dc_quant(cm->base_qindex, 0) / 4.0,
         vp9_convert_qindex_to_q(cpi->active_best_quality),
         vp9_convert_qindex_to_q(cpi->active_worst_quality), cpi->avg_q,
         vp9_convert_qindex_to_q(cpi->ni_av_qi),
         vp9_convert_qindex_to_q(cpi->cq_target_quality),
         cpi->refresh_last_frame, cpi->refresh_golden_frame,
         cpi->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 /
             (1 + cpi->twopass.total_left_stats.coded_error),
         cpi->tot_recode_hits, recon_err, cpi->kf_boost, cpi->kf_zeromotion_pct);
   fclose(f);
   if (0) {
     FILE *const fmodes = fopen("Modes.stt", "a");
     int i;
     fprintf(fmodes, "%6d:%1d:%1d:%1d ", cpi->common.current_video_frame,
             cm->frame_type, cpi->refresh_golden_frame,
             cpi->refresh_alt_ref_frame);
     for (i = 0; i < MAX_MODES; ++i)
       fprintf(fmodes, "%5d ", cpi->mode_chosen_counts[i]);
     for (i = 0; i < MAX_REFS; ++i)
       fprintf(fmodes, "%5d ", cpi->sub8x8_mode_chosen_counts[i]);
     fprintf(fmodes, "\n");
     fclose(fmodes);
   }
 }
 #endif
 static int pick_q_and_adjust_q_bounds(VP9_COMP *cpi,
                                       int * bottom_index, int * top_index) {
   // Set an active best quality and if necessary active worst quality
   int q = cpi->active_worst_quality;
   VP9_COMMON *const cm = &cpi->common;
   if (frame_is_intra_only(cm)) {
 #if !CONFIG_MULTIPLE_ARF
     // Handle the special case for key frames forced when we have75 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) {
       int delta_qindex;
       int qindex = cpi->last_boosted_qindex;
       double last_boosted_q = vp9_convert_qindex_to_q(qindex);
       delta_qindex = vp9_compute_qdelta(cpi, last_boosted_q,
                                         (last_boosted_q * 0.75));
       cpi->active_best_quality = MAX(qindex + delta_qindex,
                                      cpi->best_quality);
     } else {
       int high = 5000;
       int low = 400;
       double q_adj_factor = 1.0;
       double q_val;
       // Baseline value derived from cpi->active_worst_quality and kf boost
       cpi->active_best_quality = get_active_quality(q, cpi->kf_boost,
                                                     low, high,
                                                     kf_low_motion_minq,
                                                     kf_high_motion_minq);
       // Allow somewhat lower kf minq with small image formats.
       if ((cm->width * cm->height) <= (352 * 288)) {
         q_adj_factor -= 0.25;
       }
       // Make a further adjustment based on the kf zero motion measure.
       q_adj_factor += 0.05 - (0.001 * (double)cpi->kf_zeromotion_pct);
       // Convert the adjustment factor to a qindex delta
       // on active_best_quality.
       q_val = vp9_convert_qindex_to_q(cpi->active_best_quality);
       cpi->active_best_quality +=
           vp9_compute_qdelta(cpi, q_val, (q_val * q_adj_factor));
     }
 #else
     double current_q;
     // Force the KF quantizer to be 30% of the active_worst_quality.
     current_q = vp9_convert_qindex_to_q(cpi->active_worst_quality);
     cpi->active_best_quality = cpi->active_worst_quality
         + vp9_compute_qdelta(cpi, current_q, current_q * 0.3);
 #endif
   } else if (!cpi->is_src_frame_alt_ref &&
              (cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame)) {
     int high = 2000;
     int low = 400;
     // Use the lower of cpi->active_worst_quality and recent
     // average Q as basis for GF/ARF best 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) {
       if (q < cpi->cq_target_quality)
         q = cpi->cq_target_quality;
       if (cpi->frames_since_key > 1) {
         cpi->active_best_quality = get_active_quality(q, cpi->gfu_boost,
                                                       low, high,
                                                       afq_low_motion_minq,
                                                       afq_high_motion_minq);
       } else {
         cpi->active_best_quality = get_active_quality(q, cpi->gfu_boost,
                                                       low, high,
                                                       gf_low_motion_minq,
                                                       gf_high_motion_minq);
       }
       // Constrained quality use slightly lower active best.
       cpi->active_best_quality = cpi->active_best_quality * 15 / 16;
     } else if (cpi->oxcf.end_usage == USAGE_CONSTANT_QUALITY) {
       if (!cpi->refresh_alt_ref_frame) {
         cpi->active_best_quality = cpi->cq_target_quality;
       } else {
         if (cpi->frames_since_key > 1) {
           cpi->active_best_quality = get_active_quality(q, cpi->gfu_boost,
                                                         low, high,
                                                         afq_low_motion_minq,
                                                         afq_high_motion_minq);
         } else {
           cpi->active_best_quality = get_active_quality(q, cpi->gfu_boost,
                                                         low, high,
                                                         gf_low_motion_minq,
                                                         gf_high_motion_minq);
         }
       }
     } else {
         cpi->active_best_quality = get_active_quality(q, cpi->gfu_boost,
                                                       low, high,
                                                       gf_low_motion_minq,
                                                       gf_high_motion_minq);
     }
   } else {
     if (cpi->oxcf.end_usage == USAGE_CONSTANT_QUALITY) {
       cpi->active_best_quality = cpi->cq_target_quality;
     } else {
       cpi->active_best_quality = inter_minq[q];
       // 1-pass: for now, use the average Q for the active_best, if its lower
       // than active_worst.
       if (cpi->pass == 0 && (cpi->avg_frame_qindex < q))
         cpi->active_best_quality = inter_minq[cpi->avg_frame_qindex];
       // For the constrained quality mode we don't 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;
       }
     }
   }
   // 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_best_quality > cpi->worst_quality)
     cpi->active_best_quality = cpi->worst_quality;
   if (cpi->active_worst_quality < cpi->active_best_quality)
     cpi->active_worst_quality = cpi->active_best_quality;
   // Limit Q range for the adaptive loop.
   if (cm->frame_type == KEY_FRAME && !cpi->this_key_frame_forced) {
     *top_index =
       (cpi->active_worst_quality + cpi->active_best_quality * 3) / 4;
     // If this is the first (key) frame in 1-pass, active best is the user
     // best-allowed, and leave the top_index to active_worst.
     if (cpi->pass == 0 && cpi->common.current_video_frame == 0) {
       cpi->active_best_quality = cpi->oxcf.best_allowed_q;
       *top_index = cpi->oxcf.worst_allowed_q;
     }
   } else if (!cpi->is_src_frame_alt_ref &&
              (cpi->oxcf.end_usage != USAGE_STREAM_FROM_SERVER) &&
              (cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame)) {
     *top_index =
       (cpi->active_worst_quality + cpi->active_best_quality) / 2;
   } else {
     *top_index = cpi->active_worst_quality;
   }
   *bottom_index = cpi->active_best_quality;
   if (cpi->oxcf.end_usage == USAGE_CONSTANT_QUALITY) {
     q = cpi->active_best_quality;
   // Special case code to try and match quality with forced key frames
   } else if ((cm->frame_type == KEY_FRAME) && cpi->this_key_frame_forced) {
     q = cpi->last_boosted_qindex;
   } else {
     // Determine initial Q to try.
     if (cpi->pass == 0) {
       // 1-pass: for now, use per-frame-bw for target size of frame, scaled
       // by |x| for key frame.
       int scale = (cm->frame_type == KEY_FRAME) ? 5 : 1;
       q = vp9_regulate_q(cpi, scale * cpi->av_per_frame_bandwidth);
     } else {
       q = vp9_regulate_q(cpi, cpi->this_frame_target);
     }
     if (q > *top_index)
       q = *top_index;
   }
   return q;
 }
 static void encode_frame_to_data_rate(VP9_COMP *cpi,
                                       unsigned long *size,
                                       unsigned char *dest,
                                       unsigned int *frame_flags) {
   VP9_COMMON *const cm = &cpi->common;
   TX_SIZE t;
   int q;
   int frame_over_shoot_limit;
   int frame_under_shoot_limit;
   int loop = 0;
   int loop_count;
   int q_low;
   int q_high;
   int top_index;
   int bottom_index;
   int active_worst_qchanged = 0;
   int overshoot_seen = 0;
   int undershoot_seen = 0;
   SPEED_FEATURES *const sf = &cpi->sf;
   unsigned int max_mv_def = MIN(cpi->common.width, cpi->common.height);
   struct segmentation *const seg = &cm->seg;
   /* Scale the source buffer, if required. */
   if (cm->mi_cols * 8 != cpi->un_scaled_source->y_width ||
       cm->mi_rows * 8 != cpi->un_scaled_source->y_height) {
     scale_and_extend_frame(cpi->un_scaled_source, &cpi->scaled_source);
     cpi->Source = &cpi->scaled_source;
   } else {
     cpi->Source = cpi->un_scaled_source;
   }
   scale_references(cpi);
   // Clear down mmx registers to allow floating point in what follows.
   vp9_clear_system_state();
   // For an alt ref frame in 2 pass we skip the call to the second
   // pass function that sets the target bandwidth so we must set it here.
   if (cpi->refresh_alt_ref_frame) {
     // Set a per frame bit target for the alt ref frame.
     cpi->per_frame_bandwidth = cpi->twopass.gf_bits;
     // Set a per second target bitrate.
     cpi->target_bandwidth = (int)(cpi->twopass.gf_bits * cpi->output_framerate);
   }
   // Clear zbin over-quant value and mode boost values.
   cpi->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->zbin_mode_boost = 0;
   cpi->zbin_mode_boost_enabled = 0;
   // Current default encoder behavior for the altref sign bias.
   cpi->common.ref_frame_sign_bias[ALTREF_FRAME] = cpi->source_alt_ref_active;
   // 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))) {
     // Set frame type to key frame for the force key frame, if we exceed the
     // maximum distance in an automatic keyframe selection or for the first
     // frame.
     cm->frame_type = KEY_FRAME;
   }
   // Set default state for segment based loop filter update flags.
   cm->lf.mode_ref_delta_update = 0;
   // Initialize cpi->mv_step_param to default based on max resolution.
   cpi->mv_step_param = vp9_init_search_range(cpi, max_mv_def);
   // Initialize cpi->max_mv_magnitude and cpi->mv_step_param if appropriate.
   if (sf->auto_mv_step_size) {
     if (frame_is_intra_only(&cpi->common)) {
       // Initialize max_mv_magnitude for use in the first INTER frame
       // after a key/intra-only frame.
       cpi->max_mv_magnitude = max_mv_def;
     } else {
       if (cm->show_frame)
         // Allow mv_steps to correspond to twice the max mv magnitude found
         // in the previous frame, capped by the default max_mv_magnitude based
         // on resolution.
         cpi->mv_step_param = vp9_init_search_range(
             cpi, MIN(max_mv_def, 2 * cpi->max_mv_magnitude));
       cpi->max_mv_magnitude = 0;
     }
   }
   // Set various flags etc to special state if it is a key frame.
   if (frame_is_intra_only(cm)) {
     vp9_setup_key_frame(cpi);
     // Reset the loop filter deltas and segmentation map.
     setup_features(cm);
     // If segmentation is enabled force a map update for key frames.
     if (seg->enabled) {
       seg->update_map = 1;
       seg->update_data = 1;
     }
     // The alternate reference frame cannot be active for a key frame.
     cpi->source_alt_ref_active = 0;
     cm->error_resilient_mode = (cpi->oxcf.error_resilient_mode != 0);
     cm->frame_parallel_decoding_mode =
       (cpi->oxcf.frame_parallel_decoding_mode != 0);
     if (cm->error_resilient_mode) {
       cm->frame_parallel_decoding_mode = 1;
       cm->reset_frame_context = 0;
       cm->refresh_frame_context = 0;
     } else if (cm->intra_only) {
       // Only reset the current context.
       cm->reset_frame_context = 2;
     }
   }
   // Configure experimental use of segmentation for enhanced coding of
   // static regions if indicated.
   // Only allowed in second pass of two pass (as requires lagged coding)
   // and if the relevant speed feature flag is set.
   if ((cpi->pass == 2) && (cpi->sf.static_segmentation)) {
     configure_static_seg_features(cpi);
   }
   // Decide how big to make the frame.
   vp9_pick_frame_size(cpi);
   vp9_clear_system_state();
   q = pick_q_and_adjust_q_bounds(cpi, &bottom_index, &top_index);
   q_high = top_index;
   q_low  = bottom_index;
   vp9_compute_frame_size_bounds(cpi, &frame_under_shoot_limit,
                                 &frame_over_shoot_limit);
 #if CONFIG_MULTIPLE_ARF
   // Force the quantizer determined by the coding order pattern.
   if (cpi->multi_arf_enabled && (cm->frame_type != KEY_FRAME) &&
       cpi->oxcf.end_usage != USAGE_CONSTANT_QUALITY) {
     double new_q;
     double current_q = vp9_convert_qindex_to_q(cpi->active_worst_quality);
     int level = cpi->this_frame_weight;
     assert(level >= 0);
     // Set quantizer steps at 10% increments.
     new_q = current_q * (1.0 - (0.2 * (cpi->max_arf_level - level)));
     q = cpi->active_worst_quality + vp9_compute_qdelta(cpi, current_q, new_q);
     bottom_index = q;
     top_index    = q;
     q_low  = q;
     q_high = q;
     printf("frame:%d q:%d\n", cm->current_video_frame, q);
   }
 #endif
   loop_count = 0;
   vp9_zero(cpi->rd_tx_select_threshes);
   if (!frame_is_intra_only(cm)) {
     cm->mcomp_filter_type = DEFAULT_INTERP_FILTER;
     /* TODO: Decide this more intelligently */
     cm->allow_high_precision_mv = q < HIGH_PRECISION_MV_QTHRESH;
     set_mvcost(cpi);
   }
 #if CONFIG_VP9_POSTPROC
   if (cpi->oxcf.noise_sensitivity > 0) {
     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:
       case 5:
         l = 100;
         break;
       case 6:
         l = 150;
         break;
     }
     vp9_denoise(cpi->Source, cpi->Source, l);
   }
 #endif
 #ifdef OUTPUT_YUV_SRC
   vp9_write_yuv_frame(cpi->Source);
 #endif
   do {
     vp9_clear_system_state();  // __asm emms;
     vp9_set_quantizer(cpi, q);
     if (loop_count == 0) {
       // Set up entropy context depending on frame type. The decoder mandates
       // the use of the default context, index 0, for keyframes and inter
       // frames where the error_resilient_mode or intra_only flag is set. For
       // other inter-frames the encoder currently uses only two contexts;
       // context 1 for ALTREF frames and context 0 for the others.
       if (cm->frame_type == KEY_FRAME) {
         vp9_setup_key_frame(cpi);
       } else {
         if (!cm->intra_only && !cm->error_resilient_mode) {
           cpi->common.frame_context_idx = cpi->refresh_alt_ref_frame;
         }
         vp9_setup_inter_frame(cpi);
       }
     }
     if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
         vp9_vaq_frame_setup(cpi);
     }
     // transform / motion compensation build reconstruction frame
     vp9_encode_frame(cpi);
     // Update the skip mb flag probabilities based on the distribution
     // seen in the last encoder iteration.
     // update_base_skip_probs(cpi);
     vp9_clear_system_state();  // __asm emms;
     // Dummy pack of the bitstream using up to date stats to get an
     // accurate estimate of output frame size to determine if we need
     // to recode.
     vp9_save_coding_context(cpi);
     cpi->dummy_packing = 1;
     vp9_pack_bitstream(cpi, dest, size);
     cpi->projected_frame_size = (*size) << 3;
     vp9_restore_coding_context(cpi);
     if (frame_over_shoot_limit == 0)
       frame_over_shoot_limit = 1;
     active_worst_qchanged = 0;
     if (cpi->oxcf.end_usage == USAGE_CONSTANT_QUALITY) {
       loop = 0;
     } else {
       // 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 = vp9_calc_ss_err(cpi->Source, get_frame_new_buffer(cm));
         int high_err_target = cpi->ambient_err;
         int low_err_target = cpi->ambient_err >> 1;
         // Prevent possible divide by zero error below for perfect KF
         kf_err += !kf_err;
         // The key frame is not good enough or we can afford
         // to make it better without undue risk of popping.
         if ((kf_err > high_err_target &&
              cpi->projected_frame_size <= frame_over_shoot_limit) ||
             (kf_err > low_err_target &&
              cpi->projected_frame_size <= frame_under_shoot_limit)) {
           // Lower q_high
           q_high = q > q_low ? q - 1 : q_low;
           // Adjust Q
           q = (q * high_err_target) / kf_err;
           q = MIN(q, (q_high + q_low) >> 1);
         } else if (kf_err < low_err_target &&
                    cpi->projected_frame_size >= frame_under_shoot_limit) {
           // The key frame is much better than the previous frame
           // Raise q_low
           q_low = q < q_high ? q + 1 : q_high;
           // Adjust Q
           q = (q * low_err_target) / kf_err;
           q = MIN(q, (q_high + q_low + 1) >> 1);
         }
         // Clamp Q to upper and lower limits:
         q = clamp(q, q_low, q_high);
         loop = q != last_q;
       } else if (recode_loop_test(
           cpi, frame_over_shoot_limit, frame_under_shoot_limit,
           q, top_index, bottom_index)) {
         // Is the projected frame size out of range and are we allowed
         // to attempt to recode.
         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 (undershoot_seen || loop_count > 1) {
             // Update rate_correction_factor unless
             // cpi->active_worst_quality has changed.
             if (!active_worst_qchanged)
               vp9_update_rate_correction_factors(cpi, 1);
             q = (q_high + q_low + 1) / 2;
           } else {
             // Update rate_correction_factor unless
             // cpi->active_worst_quality has changed.
             if (!active_worst_qchanged)
               vp9_update_rate_correction_factors(cpi, 0);
             q = vp9_regulate_q(cpi, cpi->this_frame_target);
             while (q < q_low && retries < 10) {
               vp9_update_rate_correction_factors(cpi, 0);
               q = vp9_regulate_q(cpi, cpi->this_frame_target);
               retries++;
             }
           }
           overshoot_seen = 1;
         } else {
           // Frame is too small
           q_high = q > q_low ? q - 1 : q_low;
           if (overshoot_seen || loop_count > 1) {
             // Update rate_correction_factor unless
             // cpi->active_worst_quality has changed.
             if (!active_worst_qchanged)
               vp9_update_rate_correction_factors(cpi, 1);
             q = (q_high + q_low) / 2;
           } else {
             // Update rate_correction_factor unless
             // cpi->active_worst_quality has changed.
             if (!active_worst_qchanged)
               vp9_update_rate_correction_factors(cpi, 0);
             q = vp9_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 && retries < 10) {
               vp9_update_rate_correction_factors(cpi, 0);
               q = vp9_regulate_q(cpi, cpi->this_frame_target);
               retries++;
             }
           }
           undershoot_seen = 1;
         }
         // Clamp Q to upper and lower limits:
         q = clamp(q, q_low, q_high);
         loop = q != last_q;
       } else {
         loop = 0;
       }
     }
     if (cpi->is_src_frame_alt_ref)
       loop = 0;
     if (loop) {
       loop_count++;
 #if CONFIG_INTERNAL_STATS
       cpi->tot_recode_hits++;
 #endif
     }
   } while (loop);
   // 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 = vp9_calc_ss_err(cpi->Source, get_frame_new_buffer(cm));
   }
   if (cm->frame_type == KEY_FRAME)
     cpi->refresh_last_frame = 1;
   cm->frame_to_show = get_frame_new_buffer(cm);
 #if WRITE_RECON_BUFFER
   if (cm->show_frame)
     write_cx_frame_to_file(cm->frame_to_show,
                            cm->current_video_frame);
   else
     write_cx_frame_to_file(cm->frame_to_show,
                            cm->current_video_frame + 1000);
 #endif
   // Pick the loop filter level for the frame.
   loopfilter_frame(cpi, cm);
 #if WRITE_RECON_BUFFER
   if (cm->show_frame)
     write_cx_frame_to_file(cm->frame_to_show,
                            cm->current_video_frame + 2000);
   else
     write_cx_frame_to_file(cm->frame_to_show,
                            cm->current_video_frame + 3000);
 #endif
   // build the bitstream
   cpi->dummy_packing = 0;
   vp9_pack_bitstream(cpi, dest, size);
   if (cm->seg.update_map)
     update_reference_segmentation_map(cpi);
   release_scaled_references(cpi);
   update_reference_frames(cpi);
   for (t = TX_4X4; t <= TX_32X32; t++)
     full_to_model_counts(cpi->common.counts.coef[t],
                          cpi->coef_counts[t]);
   if (!cpi->common.error_resilient_mode &&
       !cpi->common.frame_parallel_decoding_mode) {
     vp9_adapt_coef_probs(&cpi->common);
   }
   if (!frame_is_intra_only(&cpi->common)) {
     FRAME_COUNTS *counts = &cpi->common.counts;
     vp9_copy(counts->y_mode, cpi->y_mode_count);
     vp9_copy(counts->uv_mode, cpi->y_uv_mode_count);
     vp9_copy(counts->partition, cpi->partition_count);
     vp9_copy(counts->intra_inter, cpi->intra_inter_count);
     vp9_copy(counts->comp_inter, cpi->comp_inter_count);
     vp9_copy(counts->single_ref, cpi->single_ref_count);
     vp9_copy(counts->comp_ref, cpi->comp_ref_count);
     counts->mv = cpi->NMVcount;
     if (!cpi->common.error_resilient_mode &&
         !cpi->common.frame_parallel_decoding_mode) {
       vp9_adapt_mode_probs(&cpi->common);
       vp9_adapt_mv_probs(&cpi->common, cpi->common.allow_high_precision_mv);
     }
   }
 #ifdef ENTROPY_STATS
   vp9_update_mode_context_stats(cpi);
 #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;
   // Post encode loop adjustment of Q prediction.
   if (!active_worst_qchanged)
     vp9_update_rate_correction_factors(cpi, (cpi->sf.recode_loop ||
         cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER) ? 2 : 0);
   cpi->last_q[cm->frame_type] = cm->base_qindex;
   // Keep record of last boosted (KF/KF/ARF) Q value.
   // If the current frame is coded at a lower Q then we also update it.
   // If all mbs in this group are skipped only update if the Q value is
   // better than that already stored.
   // This is used to help set quality in forced key frames to reduce popping
   if ((cm->base_qindex < cpi->last_boosted_qindex) ||
       ((cpi->static_mb_pct < 100) &&
        ((cm->frame_type == KEY_FRAME) ||
         cpi->refresh_alt_ref_frame ||
         (cpi->refresh_golden_frame && !cpi->is_src_frame_alt_ref)))) {
     cpi->last_boosted_qindex = cm->base_qindex;
   }
   if (cm->frame_type == KEY_FRAME) {
     vp9_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->refresh_golden_frame &&
       !cpi->refresh_alt_ref_frame) {
     cpi->ni_frames++;
     cpi->tot_q += vp9_convert_qindex_to_q(q);
     cpi->avg_q = cpi->tot_q / (double)cpi->ni_frames;
     // Calculate the average Q for normal inter frames (not key or GFU frames).
     cpi->ni_tot_qi += q;
     cpi->ni_av_qi = cpi->ni_tot_qi / cpi->ni_frames;
   }
   // 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 at the maximum 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.
   if (cm->frame_type != KEY_FRAME) {
     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;
 #ifndef DISABLE_RC_LONG_TERM_MEM
   // 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;
     cpi->twopass.kf_group_bits = MAX(cpi->twopass.kf_group_bits, 0);
   } else if (cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame) {
     cpi->twopass.gf_group_bits += cpi->this_frame_target -
                                   cpi->projected_frame_size;
     cpi->twopass.gf_group_bits = MAX(cpi->twopass.gf_group_bits, 0);
   }
 #endif
 #if 0
   output_frame_level_debug_stats(cpi);
 #endif
   if (cpi->refresh_golden_frame == 1)
     cm->frame_flags = cm->frame_flags | FRAMEFLAGS_GOLDEN;
   else
     cm->frame_flags = cm->frame_flags&~FRAMEFLAGS_GOLDEN;
   if (cpi->refresh_alt_ref_frame == 1)
     cm->frame_flags = cm->frame_flags | FRAMEFLAGS_ALTREF;
   else
     cm->frame_flags = cm->frame_flags&~FRAMEFLAGS_ALTREF;
   if (cpi->refresh_last_frame & cpi->refresh_golden_frame)
     cpi->gold_is_last = 1;
   else if (cpi->refresh_last_frame ^ cpi->refresh_golden_frame)
     cpi->gold_is_last = 0;
   if (cpi->refresh_last_frame & cpi->refresh_alt_ref_frame)
     cpi->alt_is_last = 1;
   else if (cpi->refresh_last_frame ^ cpi->refresh_alt_ref_frame)
     cpi->alt_is_last = 0;
   if (cpi->refresh_alt_ref_frame & cpi->refresh_golden_frame)
     cpi->gold_is_alt = 1;
   else if (cpi->refresh_alt_ref_frame ^ cpi->refresh_golden_frame)
     cpi->gold_is_alt = 0;
   cpi->ref_frame_flags = VP9_ALT_FLAG | VP9_GOLD_FLAG | VP9_LAST_FLAG;
   if (cpi->gold_is_last)
     cpi->ref_frame_flags &= ~VP9_GOLD_FLAG;
   if (cpi->alt_is_last)
     cpi->ref_frame_flags &= ~VP9_ALT_FLAG;
   if (cpi->gold_is_alt)
     cpi->ref_frame_flags &= ~VP9_ALT_FLAG;
   if (cpi->oxcf.play_alternate && cpi->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;
 #if CONFIG_MULTIPLE_ARF
     // Reset the sequence number.
     if (cpi->multi_arf_enabled) {
       cpi->sequence_number = 0;
       cpi->frame_coding_order_period = cpi->new_frame_coding_order_period;
       cpi->new_frame_coding_order_period = -1;
     }
 #endif
     // As this frame is a key frame the next defaults to an inter frame.
     cm->frame_type = INTER_FRAME;
   } else {
     *frame_flags = cm->frame_flags&~FRAMEFLAGS_KEY;
 #if CONFIG_MULTIPLE_ARF
     /* Increment position in the coded frame sequence. */
     if (cpi->multi_arf_enabled) {
       ++cpi->sequence_number;
       if (cpi->sequence_number >= cpi->frame_coding_order_period) {
         cpi->sequence_number = 0;
         cpi->frame_coding_order_period = cpi->new_frame_coding_order_period;
         cpi->new_frame_coding_order_period = -1;
       }
       cpi->this_frame_weight = cpi->arf_weight[cpi->sequence_number];
       assert(cpi->this_frame_weight >= 0);
     }
 #endif
   }
   // Clear the one shot update flags for segmentation map and mode/ref loop
   // filter deltas.
   cm->seg.update_map = 0;
   cm->seg.update_data = 0;
   cm->lf.mode_ref_delta_update = 0;
   // keep track of the last coded dimensions
   cm->last_width = cm->width;
   cm->last_height = cm->height;
   // reset to normal state now that we are done.
   cm->last_show_frame = cm->show_frame;
   if (cm->show_frame) {
     // current mip will be the prev_mip for the next frame
     MODE_INFO *temp = cm->prev_mip;
     MODE_INFO **temp2 = cm->prev_mi_grid_base;
     cm->prev_mip = cm->mip;
     cm->mip = temp;
     cm->prev_mi_grid_base = cm->mi_grid_base;
     cm->mi_grid_base = temp2;
     // update the upper left visible macroblock ptrs
     cm->mi = cm->mip + cm->mode_info_stride + 1;
     cm->mi_grid_visible = cm->mi_grid_base + cm->mode_info_stride + 1;
     cpi->mb.e_mbd.mi_8x8 = cm->mi_grid_visible;
     cpi->mb.e_mbd.mi_8x8[0] = cm->mi;
     // Don't increment frame counters if this was an altref buffer
     // update not a real frame
     ++cm->current_video_frame;
     ++cpi->frames_since_key;
   }
   // restore prev_mi
   cm->prev_mi = cm->prev_mip + cm->mode_info_stride + 1;
   cm->prev_mi_grid_visible = cm->prev_mi_grid_base + cm->mode_info_stride + 1;
 }
 static void Pass2Encode(VP9_COMP *cpi, unsigned long *size,
                         unsigned char *dest, unsigned int *frame_flags) {
   cpi->enable_encode_breakout = 1;
   if (!cpi->refresh_alt_ref_frame)
     vp9_second_pass(cpi);
   encode_frame_to_data_rate(cpi, size, dest, frame_flags);
   // vp9_print_modes_and_motion_vectors(&cpi->common, "encode.stt");
 #ifdef DISABLE_RC_LONG_TERM_MEM
   cpi->twopass.bits_left -=  cpi->this_frame_target;
 #else
   cpi->twopass.bits_left -= 8 * *size;
 #endif
   if (!cpi->refresh_alt_ref_frame) {
     double lower_bounds_min_rate = FRAME_OVERHEAD_BITS * cpi->oxcf.framerate;
     double two_pass_min_rate = (double)(cpi->oxcf.target_bandwidth
                                         * cpi->oxcf.two_pass_vbrmin_section
                                         / 100);
     if (two_pass_min_rate < lower_bounds_min_rate)
       two_pass_min_rate = lower_bounds_min_rate;
     cpi->twopass.bits_left += (int64_t)(two_pass_min_rate
                               / cpi->oxcf.framerate);
   }
 }
 static void check_initial_width(VP9_COMP *cpi, YV12_BUFFER_CONFIG *sd) {
   VP9_COMMON            *cm = &cpi->common;
   if (!cpi->initial_width) {
     // TODO(jkoleszar): Support 1/4 subsampling?
     cm->subsampling_x = (sd != NULL) && sd->uv_width < sd->y_width;
     cm->subsampling_y = (sd != NULL) && sd->uv_height < sd->y_height;
     alloc_raw_frame_buffers(cpi);
     cpi->initial_width = cm->width;
     cpi->initial_height = cm->height;
   }
 }
 int vp9_receive_raw_frame(VP9_PTR ptr, unsigned int frame_flags,
                           YV12_BUFFER_CONFIG *sd, int64_t time_stamp,
                           int64_t end_time) {
   VP9_COMP              *cpi = (VP9_COMP *) ptr;
   struct vpx_usec_timer  timer;
   int                    res = 0;
   check_initial_width(cpi, sd);
   vpx_usec_timer_start(&timer);
   if (vp9_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);
   return res;
 }
 static int frame_is_reference(const VP9_COMP *cpi) {
   const VP9_COMMON *cm = &cpi->common;
   return cm->frame_type == KEY_FRAME ||
          cpi->refresh_last_frame ||
          cpi->refresh_golden_frame ||
          cpi->refresh_alt_ref_frame ||
          cm->refresh_frame_context ||
          cm->lf.mode_ref_delta_update ||
          cm->seg.update_map ||
          cm->seg.update_data;
 }
 #if CONFIG_MULTIPLE_ARF
 int is_next_frame_arf(VP9_COMP *cpi) {
   // Negative entry in frame_coding_order indicates an ARF at this position.
   return cpi->frame_coding_order[cpi->sequence_number + 1] < 0 ? 1 : 0;
 }
 #endif
 int vp9_get_compressed_data(VP9_PTR ptr, unsigned int *frame_flags,
                             unsigned long *size, unsigned char *dest,
                             int64_t *time_stamp, int64_t *time_end, int flush) {
   VP9_COMP *cpi = (VP9_COMP *) ptr;
   VP9_COMMON *cm = &cpi->common;
   struct vpx_usec_timer  cmptimer;
   YV12_BUFFER_CONFIG    *force_src_buffer = NULL;
   int i;
   // FILE *fp_out = fopen("enc_frame_type.txt", "a");
   if (!cpi)
     return -1;
   vpx_usec_timer_start(&cmptimer);
   cpi->source = NULL;
   cpi->common.allow_high_precision_mv = ALTREF_HIGH_PRECISION_MV;
   set_mvcost(cpi);
   // Should we code an alternate reference frame.
   if (cpi->oxcf.play_alternate && cpi->source_alt_ref_pending) {
     int frames_to_arf;
 #if CONFIG_MULTIPLE_ARF
     assert(!cpi->multi_arf_enabled ||
            cpi->frame_coding_order[cpi->sequence_number] < 0);
     if (cpi->multi_arf_enabled && (cpi->pass == 2))
       frames_to_arf = (-cpi->frame_coding_order[cpi->sequence_number])
         - cpi->next_frame_in_order;
     else
 #endif
       frames_to_arf = cpi->frames_till_gf_update_due;
     assert(frames_to_arf < cpi->twopass.frames_to_key);
     if ((cpi->source = vp9_lookahead_peek(cpi->lookahead, frames_to_arf))) {
 #if CONFIG_MULTIPLE_ARF
       cpi->alt_ref_source[cpi->arf_buffered] = cpi->source;
 #else
       cpi->alt_ref_source = cpi->source;
 #endif
       if (cpi->oxcf.arnr_max_frames > 0) {
         // Produce the filtered ARF frame.
         // TODO(agrange) merge these two functions.
         configure_arnr_filter(cpi, cm->current_video_frame + frames_to_arf,
                               cpi->gfu_boost);
         vp9_temporal_filter_prepare(cpi, frames_to_arf);
         vp9_extend_frame_borders(&cpi->alt_ref_buffer,
                                  cm->subsampling_x, cm->subsampling_y);
         force_src_buffer = &cpi->alt_ref_buffer;
       }
       cm->show_frame = 0;
       cpi->refresh_alt_ref_frame = 1;
       cpi->refresh_golden_frame = 0;
       cpi->refresh_last_frame = 0;
       cpi->is_src_frame_alt_ref = 0;
       // TODO(agrange) This needs to vary depending on where the next ARF is.
       cpi->frames_till_alt_ref_frame = frames_to_arf;
 #if CONFIG_MULTIPLE_ARF
       if (!cpi->multi_arf_enabled)
 #endif
         cpi->source_alt_ref_pending = 0;   // Clear Pending altf Ref flag.
     }
   }
   if (!cpi->source) {
 #if CONFIG_MULTIPLE_ARF
     int i;
 #endif
     if ((cpi->source = vp9_lookahead_pop(cpi->lookahead, flush))) {
       cm->show_frame = 1;
       cm->intra_only = 0;
 #if CONFIG_MULTIPLE_ARF
       // Is this frame the ARF overlay.
       cpi->is_src_frame_alt_ref = 0;
       for (i = 0; i < cpi->arf_buffered; ++i) {
         if (cpi->source == cpi->alt_ref_source[i]) {
           cpi->is_src_frame_alt_ref = 1;
           cpi->refresh_golden_frame = 1;
           break;
         }
       }
 #else
       cpi->is_src_frame_alt_ref = cpi->alt_ref_source
                                   && (cpi->source == cpi->alt_ref_source);
 #endif
       if (cpi->is_src_frame_alt_ref) {
         // Current frame is an ARF overlay frame.
 #if CONFIG_MULTIPLE_ARF
         cpi->alt_ref_source[i] = NULL;
 #else
         cpi->alt_ref_source = NULL;
 #endif
         // Don't refresh the last buffer for an ARF overlay frame. It will
         // become the GF so preserve last as an alternative prediction option.
         cpi->refresh_last_frame = 0;
       }
 #if CONFIG_MULTIPLE_ARF
       ++cpi->next_frame_in_order;
 #endif
     }
   }
   if (cpi->source) {
     cpi->un_scaled_source = cpi->Source = force_src_buffer ? force_src_buffer
                                                            : &cpi->source->img;
     *time_stamp = cpi->source->ts_start;
     *time_end = cpi->source->ts_end;
     *frame_flags = cpi->source->flags;
     // fprintf(fp_out, "   Frame:%d", cm->current_video_frame);
 #if CONFIG_MULTIPLE_ARF
     if (cpi->multi_arf_enabled) {
       // fprintf(fp_out, "   seq_no:%d  this_frame_weight:%d",
       //         cpi->sequence_number, cpi->this_frame_weight);
     } else {
       // fprintf(fp_out, "\n");
     }
 #else
     // fprintf(fp_out, "\n");
 #endif
 #if CONFIG_MULTIPLE_ARF
     if ((cm->frame_type != KEY_FRAME) && (cpi->pass == 2))
       cpi->source_alt_ref_pending = is_next_frame_arf(cpi);
 #endif
   } else {
     *size = 0;
     if (flush && cpi->pass == 1 && !cpi->twopass.first_pass_done) {
       vp9_end_first_pass(cpi);    /* get last stats packet */
       cpi->twopass.first_pass_done = 1;
     }
     // fclose(fp_out);
     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 (!cpi->refresh_alt_ref_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 = cpi->last_end_time_stamp_seen
                                 - cpi->last_time_stamp_seen;
       this_duration = cpi->source->ts_end - cpi->last_end_time_stamp_seen;
       // do a step update if the duration changes by 10%
       if (last_duration)
         step = (int)((this_duration - last_duration) * 10 / last_duration);
     }
     if (this_duration) {
       if (step) {
         vp9_new_framerate(cpi, 10000000.0 / this_duration);
       } else {
         // 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.
         const double interval = MIN((double)(cpi->source->ts_end
                                      - cpi->first_time_stamp_ever), 10000000.0);
         double avg_duration = 10000000.0 / cpi->oxcf.framerate;
         avg_duration *= (interval - avg_duration + this_duration);
         avg_duration /= interval;
         vp9_new_framerate(cpi, 10000000.0 / avg_duration);
       }
     }
     cpi->last_time_stamp_seen = cpi->source->ts_start;
     cpi->last_end_time_stamp_seen = cpi->source->ts_end;
   }
   // start with a 0 size frame
   *size = 0;
   // Clear down mmx registers
   vp9_clear_system_state();  // __asm emms;
   /* find a free buffer for the new frame, releasing the reference previously
    * held.
    */
   cm->fb_idx_ref_cnt[cm->new_fb_idx]--;
   cm->new_fb_idx = get_free_fb(cm);
 #if CONFIG_MULTIPLE_ARF
   /* Set up the correct ARF frame. */
   if (cpi->refresh_alt_ref_frame) {
     ++cpi->arf_buffered;
   }
   if (cpi->multi_arf_enabled && (cm->frame_type != KEY_FRAME) &&
       (cpi->pass == 2)) {
     cpi->alt_fb_idx = cpi->arf_buffer_idx[cpi->sequence_number];
   }
 #endif
   /* Get the mapping of L/G/A to the reference buffer pool */
   cm->active_ref_idx[0] = cm->ref_frame_map[cpi->lst_fb_idx];
   cm->active_ref_idx[1] = cm->ref_frame_map[cpi->gld_fb_idx];
   cm->active_ref_idx[2] = cm->ref_frame_map[cpi->alt_fb_idx];
 #if 0  // CONFIG_MULTIPLE_ARF
   if (cpi->multi_arf_enabled) {
     fprintf(fp_out, "      idx(%d, %d, %d, %d) active(%d, %d, %d)",
         cpi->lst_fb_idx, cpi->gld_fb_idx, cpi->alt_fb_idx, cm->new_fb_idx,
         cm->active_ref_idx[0], cm->active_ref_idx[1], cm->active_ref_idx[2]);
     if (cpi->refresh_alt_ref_frame)
       fprintf(fp_out, "  type:ARF");
     if (cpi->is_src_frame_alt_ref)
       fprintf(fp_out, "  type:OVERLAY[%d]", cpi->alt_fb_idx);
     fprintf(fp_out, "\n");
   }
 #endif
   cm->frame_type = INTER_FRAME;
   cm->frame_flags = *frame_flags;
   // Reset the frame pointers to the current frame size
   vp9_realloc_frame_buffer(get_frame_new_buffer(cm),
                            cm->width, cm->height,
                            cm->subsampling_x, cm->subsampling_y,
                            VP9BORDERINPIXELS);
   // Calculate scaling factors for each of the 3 available references
   for (i = 0; i < ALLOWED_REFS_PER_FRAME; ++i)
     vp9_setup_scale_factors(cm, i);
   vp9_setup_interp_filters(&cpi->mb.e_mbd, DEFAULT_INTERP_FILTER, cm);
   if (cpi->oxcf.aq_mode == VARIANCE_AQ) {
       vp9_vaq_init();
   }
   if (cpi->pass == 1) {
     Pass1Encode(cpi, size, dest, frame_flags);
   } else if (cpi->pass == 2) {
     Pass2Encode(cpi, size, dest, frame_flags);
   } else {
     encode_frame_to_data_rate(cpi, size, dest, frame_flags);
   }
   if (cm->refresh_frame_context)
     cm->frame_contexts[cm->frame_context_idx] = cm->fc;
   if (*size > 0) {
     // if its a dropped frame honor the requests on subsequent frames
     cpi->droppable = !frame_is_reference(cpi);
     // return to normal state
     cm->reset_frame_context = 0;
     cm->refresh_frame_context = 1;
     cpi->refresh_alt_ref_frame = 0;
     cpi->refresh_golden_frame = 0;
     cpi->refresh_last_frame = 1;
     cm->frame_type = INTER_FRAME;
   }
   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->count++;
       if (cpi->b_calculate_psnr) {
         double ye, ue, ve;
         double frame_psnr;
         YV12_BUFFER_CONFIG      *orig = cpi->Source;
         YV12_BUFFER_CONFIG      *recon = cpi->common.frame_to_show;
         YV12_BUFFER_CONFIG      *pp = &cm->post_proc_buffer;
         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;
         ye = (double)calc_plane_error(orig->y_buffer, orig->y_stride,
                               recon->y_buffer, recon->y_stride,
                               orig->y_crop_width, orig->y_crop_height);
         ue = (double)calc_plane_error(orig->u_buffer, orig->uv_stride,
                               recon->u_buffer, recon->uv_stride,
                               orig->uv_crop_width, orig->uv_crop_height);
         ve = (double)calc_plane_error(orig->v_buffer, orig->uv_stride,
                               recon->v_buffer, recon->uv_stride,
                               orig->uv_crop_width, orig->uv_crop_height);
         sq_error = ye + ue + ve;
         frame_psnr = vp9_mse2psnr(t_samples, 255.0, sq_error);
         cpi->total_y += vp9_mse2psnr(y_samples, 255.0, ye);
         cpi->total_u += vp9_mse2psnr(uv_samples, 255.0, ue);
         cpi->total_v += vp9_mse2psnr(uv_samples, 255.0, ve);
         cpi->total_sq_error += sq_error;
         cpi->total  += frame_psnr;
         {
           double frame_psnr2, frame_ssim2 = 0;
           double weight = 0;
 #if CONFIG_VP9_POSTPROC
           vp9_deblock(cm->frame_to_show, &cm->post_proc_buffer,
                       cm->lf.filter_level * 10 / 6);
 #endif
           vp9_clear_system_state();
           ye = (double)calc_plane_error(orig->y_buffer, orig->y_stride,
                                 pp->y_buffer, pp->y_stride,
                                 orig->y_crop_width, orig->y_crop_height);
           ue = (double)calc_plane_error(orig->u_buffer, orig->uv_stride,
                                 pp->u_buffer, pp->uv_stride,
                                 orig->uv_crop_width, orig->uv_crop_height);
           ve = (double)calc_plane_error(orig->v_buffer, orig->uv_stride,
                                 pp->v_buffer, pp->uv_stride,
                                 orig->uv_crop_width, orig->uv_crop_height);
           sq_error = ye + ue + ve;
           frame_psnr2 = vp9_mse2psnr(t_samples, 255.0, sq_error);
           cpi->totalp_y += vp9_mse2psnr(y_samples, 255.0, ye);
           cpi->totalp_u += vp9_mse2psnr(uv_samples, 255.0, ue);
           cpi->totalp_v += vp9_mse2psnr(uv_samples, 255.0, ve);
           cpi->total_sq_error2 += sq_error;
           cpi->totalp  += frame_psnr2;
           frame_ssim2 = vp9_calc_ssim(cpi->Source,
                                       recon, 1, &weight);
           cpi->summed_quality += frame_ssim2 * weight;
           cpi->summed_weights += weight;
           frame_ssim2 = vp9_calc_ssim(cpi->Source,
                                       &cm->post_proc_buffer, 1, &weight);
           cpi->summedp_quality += frame_ssim2 * weight;
           cpi->summedp_weights += weight;
 #if 0
           {
             FILE *f = fopen("q_used.stt", "a");
             fprintf(f, "%5d : Y%f7.3:U%f7.3:V%f7.3:F%f7.3:S%7.3f\n",
                     cpi->common.current_video_frame, y2, u2, v2,
                     frame_psnr2, frame_ssim2);
             fclose(f);
           }
 #endif
         }
       }
       if (cpi->b_calculate_ssimg) {
         double y, u, v, frame_all;
         frame_all =  vp9_calc_ssimg(cpi->Source, cm->frame_to_show,
                                     &y, &u, &v);
         cpi->total_ssimg_y += y;
         cpi->total_ssimg_u += u;
         cpi->total_ssimg_v += v;
         cpi->total_ssimg_all += frame_all;
       }
     }
   }
 #endif
   // fclose(fp_out);
   return 0;
 }
 int vp9_get_preview_raw_frame(VP9_PTR comp, YV12_BUFFER_CONFIG *dest,
                               vp9_ppflags_t *flags) {
   VP9_COMP *cpi = (VP9_COMP *) comp;
   if (!cpi->common.show_frame) {
     return -1;
   } else {
     int ret;
 #if CONFIG_VP9_POSTPROC
     ret = vp9_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  // !CONFIG_VP9_POSTPROC
     vp9_clear_system_state();
     return ret;
   }
 }
 int vp9_set_roimap(VP9_PTR comp, unsigned char *map, unsigned int rows,
                    unsigned int cols, int delta_q[MAX_SEGMENTS],
                    int delta_lf[MAX_SEGMENTS],
                    unsigned int threshold[MAX_SEGMENTS]) {
   VP9_COMP *cpi = (VP9_COMP *) comp;
   signed char feature_data[SEG_LVL_MAX][MAX_SEGMENTS];
   struct segmentation *seg = &cpi->common.seg;
   int i;
   if (cpi->common.mb_rows != rows || cpi->common.mb_cols != cols)
     return -1;
   if (!map) {
     vp9_disable_segmentation((VP9_PTR)cpi);
     return 0;
   }
   // Set the segmentation Map
   vp9_set_segmentation_map((VP9_PTR)cpi, map);
   // Activate segmentation.
   vp9_enable_segmentation((VP9_PTR)cpi);
   // Set up the quant, LF and breakout threshold segment data
   for (i = 0; i < MAX_SEGMENTS; i++) {
     feature_data[SEG_LVL_ALT_Q][i] = delta_q[i];
     feature_data[SEG_LVL_ALT_LF][i] = delta_lf[i];
     cpi->segment_encode_breakout[i] = threshold[i];
   }
   // Enable the loop and quant changes in the feature mask
   for (i = 0; i < MAX_SEGMENTS; i++) {
     if (delta_q[i])
       vp9_enable_segfeature(seg, i, SEG_LVL_ALT_Q);
     else
       vp9_disable_segfeature(seg, i, SEG_LVL_ALT_Q);
     if (delta_lf[i])
       vp9_enable_segfeature(seg, i, SEG_LVL_ALT_LF);
     else
       vp9_disable_segfeature(seg, i, SEG_LVL_ALT_LF);
   }
   // Initialize the feature data structure
   // SEGMENT_DELTADATA    0, SEGMENT_ABSDATA      1
   vp9_set_segment_data((VP9_PTR)cpi, &feature_data[0][0], SEGMENT_DELTADATA);
   return 0;
 }
 int vp9_set_active_map(VP9_PTR comp, unsigned char *map,
                        unsigned int rows, unsigned int cols) {
   VP9_COMP *cpi = (VP9_COMP *) comp;
   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 {
     // cpi->active_map_enabled = 0;
     return -1;
   }
 }
 int vp9_set_internal_size(VP9_PTR comp,
                           VPX_SCALING horiz_mode, VPX_SCALING vert_mode) {
   VP9_COMP *cpi = (VP9_COMP *) comp;
   VP9_COMMON *cm = &cpi->common;
   int hr = 0, hs = 0, vr = 0, vs = 0;
   if (horiz_mode > ONETWO || vert_mode > ONETWO)
     return -1;
   Scale2Ratio(horiz_mode, &hr, &hs);
   Scale2Ratio(vert_mode, &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;
   assert(cm->width <= cpi->initial_width);
   assert(cm->height <= cpi->initial_height);
   update_frame_size(cpi);
   return 0;
 }
 int vp9_set_size_literal(VP9_PTR comp, unsigned int width,
                          unsigned int height) {
   VP9_COMP *cpi = (VP9_COMP *)comp;
   VP9_COMMON *cm = &cpi->common;
   check_initial_width(cpi, NULL);
   if (width) {
     cm->width = width;
     if (cm->width * 5 < cpi->initial_width) {
       cm->width = cpi->initial_width / 5 + 1;
       printf("Warning: Desired width too small, changed to %d \n", cm->width);
     }
     if (cm->width > cpi->initial_width) {
       cm->width = cpi->initial_width;
       printf("Warning: Desired width too large, changed to %d \n", cm->width);
     }
   }
   if (height) {
     cm->height = height;
     if (cm->height * 5 < cpi->initial_height) {
       cm->height = cpi->initial_height / 5 + 1;
       printf("Warning: Desired height too small, changed to %d \n", cm->height);
     }
     if (cm->height > cpi->initial_height) {
       cm->height = cpi->initial_height;
       printf("Warning: Desired height too large, changed to %d \n", cm->height);
     }
   }
   assert(cm->width <= cpi->initial_width);
   assert(cm->height <= cpi->initial_height);
   update_frame_size(cpi);
   return 0;
 }
 void vp9_set_svc(VP9_PTR comp, int use_svc) {
   VP9_COMP *cpi = (VP9_COMP *)comp;
   cpi->use_svc = use_svc;
   return;
 }
 int vp9_calc_ss_err(YV12_BUFFER_CONFIG *source, YV12_BUFFER_CONFIG *dest) {
   int i, j;
   int total = 0;
   uint8_t *src = source->y_buffer;
   uint8_t *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 += vp9_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 vp9_get_quantizer(VP9_PTR c) {
   return ((VP9_COMP *)c)->common.base_qindex;
 }

The Tor Browser / annotate

media/libvpx/vp9/encoder/vp9_onyx_if.c@b8a032363ba2 (annotated)

media/libvpx/vp9/encoder/vp9_onyx_if.c