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 /*

  *  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.

  */

 #ifndef VP9_COMMON_VP9_ONYXC_INT_H_

 #define VP9_COMMON_VP9_ONYXC_INT_H_

 #include "./vpx_config.h"

 #include "vpx/internal/vpx_codec_internal.h"

 #include "./vp9_rtcd.h"

 #include "vp9/common/vp9_loopfilter.h"

 #include "vp9/common/vp9_entropymv.h"

 #include "vp9/common/vp9_entropy.h"

 #include "vp9/common/vp9_entropymode.h"

 #include "vp9/common/vp9_quant_common.h"

 #include "vp9/common/vp9_tile_common.h"

 #if CONFIG_VP9_POSTPROC

 #include "vp9/common/vp9_postproc.h"

 #endif

 #define ALLOWED_REFS_PER_FRAME 3

 #define NUM_REF_FRAMES_LOG2 3

 #define NUM_REF_FRAMES (1 << NUM_REF_FRAMES_LOG2)

 // 1 scratch frame for the new frame, 3 for scaled references on the encoder

 // TODO(jkoleszar): These 3 extra references could probably come from the

 // normal reference pool.

 #define NUM_YV12_BUFFERS (NUM_REF_FRAMES + 4)

 #define NUM_FRAME_CONTEXTS_LOG2 2

 #define NUM_FRAME_CONTEXTS (1 << NUM_FRAME_CONTEXTS_LOG2)

 typedef struct frame_contexts {

   vp9_prob y_mode_prob[BLOCK_SIZE_GROUPS][INTRA_MODES - 1];

   vp9_prob uv_mode_prob[INTRA_MODES][INTRA_MODES - 1];

   vp9_prob partition_prob[PARTITION_CONTEXTS][PARTITION_TYPES - 1];

   vp9_coeff_probs_model coef_probs[TX_SIZES][BLOCK_TYPES];

   vp9_prob switchable_interp_prob[SWITCHABLE_FILTER_CONTEXTS]

                                  [SWITCHABLE_FILTERS - 1];

   vp9_prob inter_mode_probs[INTER_MODE_CONTEXTS][INTER_MODES - 1];

   vp9_prob intra_inter_prob[INTRA_INTER_CONTEXTS];

   vp9_prob comp_inter_prob[COMP_INTER_CONTEXTS];

   vp9_prob single_ref_prob[REF_CONTEXTS][2];

   vp9_prob comp_ref_prob[REF_CONTEXTS];

   struct tx_probs tx_probs;

   vp9_prob mbskip_probs[MBSKIP_CONTEXTS];

   nmv_context nmvc;

 } FRAME_CONTEXT;

 typedef struct {

   unsigned int y_mode[BLOCK_SIZE_GROUPS][INTRA_MODES];

   unsigned int uv_mode[INTRA_MODES][INTRA_MODES];

   unsigned int partition[PARTITION_CONTEXTS][PARTITION_TYPES];

   vp9_coeff_count_model coef[TX_SIZES][BLOCK_TYPES];

   unsigned int eob_branch[TX_SIZES][BLOCK_TYPES][REF_TYPES]

                          [COEF_BANDS][PREV_COEF_CONTEXTS];

   unsigned int switchable_interp[SWITCHABLE_FILTER_CONTEXTS]

                                 [SWITCHABLE_FILTERS];

   unsigned int inter_mode[INTER_MODE_CONTEXTS][INTER_MODES];

   unsigned int intra_inter[INTRA_INTER_CONTEXTS][2];

   unsigned int comp_inter[COMP_INTER_CONTEXTS][2];

   unsigned int single_ref[REF_CONTEXTS][2][2];

   unsigned int comp_ref[REF_CONTEXTS][2];

   struct tx_counts tx;

   unsigned int mbskip[MBSKIP_CONTEXTS][2];

   nmv_context_counts mv;

 } FRAME_COUNTS;

 typedef enum {

   SINGLE_PREDICTION_ONLY = 0,

   COMP_PREDICTION_ONLY   = 1,

   HYBRID_PREDICTION      = 2,

   NB_PREDICTION_TYPES    = 3,

 } COMPPREDMODE_TYPE;

 typedef struct VP9Common {

   struct vpx_internal_error_info  error;

   DECLARE_ALIGNED(16, int16_t, y_dequant[QINDEX_RANGE][8]);

   DECLARE_ALIGNED(16, int16_t, uv_dequant[QINDEX_RANGE][8]);

 #if CONFIG_ALPHA

   DECLARE_ALIGNED(16, int16_t, a_dequant[QINDEX_RANGE][8]);

 #endif

   COLOR_SPACE color_space;

   int width;

   int height;

   int display_width;

   int display_height;

   int last_width;

   int last_height;

   // TODO(jkoleszar): this implies chroma ss right now, but could vary per

   // plane. Revisit as part of the future change to YV12_BUFFER_CONFIG to

   // support additional planes.

   int subsampling_x;

   int subsampling_y;

   YV12_BUFFER_CONFIG *frame_to_show;

   YV12_BUFFER_CONFIG yv12_fb[NUM_YV12_BUFFERS];

   int fb_idx_ref_cnt[NUM_YV12_BUFFERS]; /* reference counts */

   int ref_frame_map[NUM_REF_FRAMES]; /* maps fb_idx to reference slot */

   // TODO(jkoleszar): could expand active_ref_idx to 4, with 0 as intra, and

   // roll new_fb_idx into it.

   // Each frame can reference ALLOWED_REFS_PER_FRAME buffers

   int active_ref_idx[ALLOWED_REFS_PER_FRAME];

   struct scale_factors active_ref_scale[ALLOWED_REFS_PER_FRAME];

   struct scale_factors_common active_ref_scale_comm[ALLOWED_REFS_PER_FRAME];

   int new_fb_idx;

   YV12_BUFFER_CONFIG post_proc_buffer;

   FRAME_TYPE last_frame_type;  /* last frame's frame type for motion search.*/

   FRAME_TYPE frame_type;

   int show_frame;

   int last_show_frame;

   // Flag signaling that the frame is encoded using only INTRA modes.

   int intra_only;

   int allow_high_precision_mv;

   // Flag signaling that the frame context should be reset to default values.

   // 0 or 1 implies don't reset, 2 reset just the context specified in the

   // frame header, 3 reset all contexts.

   int reset_frame_context;

   int frame_flags;

   // MBs, mb_rows/cols is in 16-pixel units; mi_rows/cols is in

   // MODE_INFO (8-pixel) units.

   int MBs;

   int mb_rows, mi_rows;

   int mb_cols, mi_cols;

   int mode_info_stride;

   /* profile settings */

   TX_MODE tx_mode;

   int base_qindex;

   int y_dc_delta_q;

   int uv_dc_delta_q;

   int uv_ac_delta_q;

 #if CONFIG_ALPHA

   int a_dc_delta_q;

   int a_ac_delta_q;

 #endif

   /* We allocate a MODE_INFO struct for each macroblock, together with

      an extra row on top and column on the left to simplify prediction. */

   MODE_INFO *mip; /* Base of allocated array */

   MODE_INFO *mi;  /* Corresponds to upper left visible macroblock */

   MODE_INFO *prev_mip; /* MODE_INFO array 'mip' from last decoded frame */

   MODE_INFO *prev_mi;  /* 'mi' from last frame (points into prev_mip) */

   MODE_INFO **mi_grid_base;

   MODE_INFO **mi_grid_visible;

   MODE_INFO **prev_mi_grid_base;

   MODE_INFO **prev_mi_grid_visible;

   // Persistent mb segment id map used in prediction.

   unsigned char *last_frame_seg_map;

   INTERPOLATION_TYPE mcomp_filter_type;

   loop_filter_info_n lf_info;

   int refresh_frame_context;    /* Two state 0 = NO, 1 = YES */

   int ref_frame_sign_bias[MAX_REF_FRAMES];    /* Two state 0, 1 */

   struct loopfilter lf;

   struct segmentation seg;

   // Context probabilities for reference frame prediction

   int allow_comp_inter_inter;

   MV_REFERENCE_FRAME comp_fixed_ref;

   MV_REFERENCE_FRAME comp_var_ref[2];

   COMPPREDMODE_TYPE comp_pred_mode;

   FRAME_CONTEXT fc;  /* this frame entropy */

   FRAME_CONTEXT frame_contexts[NUM_FRAME_CONTEXTS];

   unsigned int  frame_context_idx; /* Context to use/update */

   FRAME_COUNTS counts;

   unsigned int current_video_frame;

   int version;

 #if CONFIG_VP9_POSTPROC

   struct postproc_state  postproc_state;

 #endif

   int error_resilient_mode;

   int frame_parallel_decoding_mode;

   int log2_tile_cols, log2_tile_rows;

 } VP9_COMMON;

 // ref == 0 => LAST_FRAME

 // ref == 1 => GOLDEN_FRAME

 // ref == 2 => ALTREF_FRAME

 static YV12_BUFFER_CONFIG *get_frame_ref_buffer(VP9_COMMON *cm, int ref) {

   return &cm->yv12_fb[cm->active_ref_idx[ref]];

 }

 static YV12_BUFFER_CONFIG *get_frame_new_buffer(VP9_COMMON *cm) {

   return &cm->yv12_fb[cm->new_fb_idx];

 }

 static int get_free_fb(VP9_COMMON *cm) {

   int i;

   for (i = 0; i < NUM_YV12_BUFFERS; i++)

     if (cm->fb_idx_ref_cnt[i] == 0)

       break;

   assert(i < NUM_YV12_BUFFERS);

   cm->fb_idx_ref_cnt[i] = 1;

   return i;

 }

 static void ref_cnt_fb(int *buf, int *idx, int new_idx) {

   if (buf[*idx] > 0)

     buf[*idx]--;

   *idx = new_idx;

   buf[new_idx]++;

 }

 static int mi_cols_aligned_to_sb(int n_mis) {

   return ALIGN_POWER_OF_TWO(n_mis, MI_BLOCK_SIZE_LOG2);

 }

 static INLINE const vp9_prob* get_partition_probs(VP9_COMMON *cm, int ctx) {

   return cm->frame_type == KEY_FRAME ? vp9_kf_partition_probs[ctx]

                                      : cm->fc.partition_prob[ctx];

 }

 static INLINE void set_skip_context(

     MACROBLOCKD *xd,

     ENTROPY_CONTEXT *above_context[MAX_MB_PLANE],

     ENTROPY_CONTEXT left_context[MAX_MB_PLANE][16],

     int mi_row, int mi_col) {

   const int above_idx = mi_col * 2;

   const int left_idx = (mi_row * 2) & 15;

   int i;

   for (i = 0; i < MAX_MB_PLANE; i++) {

     struct macroblockd_plane *const pd = &xd->plane[i];

     pd->above_context = above_context[i] + (above_idx >> pd->subsampling_x);

     pd->left_context = left_context[i] + (left_idx >> pd->subsampling_y);

   }

 }

 static void set_mi_row_col(MACROBLOCKD *xd, const TileInfo *const tile,

                            int mi_row, int bh,

                            int mi_col, int bw,

                            int mi_rows, int mi_cols) {

   xd->mb_to_top_edge    = -((mi_row * MI_SIZE) * 8);

   xd->mb_to_bottom_edge = ((mi_rows - bh - mi_row) * MI_SIZE) * 8;

   xd->mb_to_left_edge   = -((mi_col * MI_SIZE) * 8);

   xd->mb_to_right_edge  = ((mi_cols - bw - mi_col) * MI_SIZE) * 8;

   // Are edges available for intra prediction?

   xd->up_available    = (mi_row != 0);

   xd->left_available  = (mi_col > tile->mi_col_start);

 }

 static void set_prev_mi(VP9_COMMON *cm) {

   const int use_prev_in_find_mv_refs = cm->width == cm->last_width &&

                                        cm->height == cm->last_height &&

                                        !cm->error_resilient_mode &&

                                        !cm->intra_only &&

                                        cm->last_show_frame;

   // Special case: set prev_mi to NULL when the previous mode info

   // context cannot be used.

   cm->prev_mi = use_prev_in_find_mv_refs ?

                   cm->prev_mip + cm->mode_info_stride + 1 : NULL;

 }

 static INLINE int frame_is_intra_only(const VP9_COMMON *const cm) {

   return cm->frame_type == KEY_FRAME || cm->intra_only;

 }

 static INLINE void update_partition_context(

     PARTITION_CONTEXT *above_seg_context,

     PARTITION_CONTEXT left_seg_context[8],

     int mi_row, int mi_col,

     BLOCK_SIZE sb_type,

     BLOCK_SIZE sb_size) {

   PARTITION_CONTEXT *above_ctx = above_seg_context + mi_col;

   PARTITION_CONTEXT *left_ctx = left_seg_context + (mi_row & MI_MASK);

   const int bsl = b_width_log2(sb_size), bs = (1 << bsl) / 2;

   const int bwl = b_width_log2(sb_type);

   const int bhl = b_height_log2(sb_type);

   const int boffset = b_width_log2(BLOCK_64X64) - bsl;

   const char pcval0 = ~(0xe << boffset);

   const char pcval1 = ~(0xf << boffset);

   const char pcvalue[2] = {pcval0, pcval1};

   assert(MAX(bwl, bhl) <= bsl);

   // update the partition context at the end notes. set partition bits

   // of block sizes larger than the current one to be one, and partition

   // bits of smaller block sizes to be zero.

   vpx_memset(above_ctx, pcvalue[bwl == bsl], bs);

   vpx_memset(left_ctx, pcvalue[bhl == bsl], bs);

 }

 static INLINE int partition_plane_context(

     const PARTITION_CONTEXT *above_seg_context,

     const PARTITION_CONTEXT left_seg_context[8],

     int mi_row, int mi_col,

     BLOCK_SIZE sb_type) {

   const PARTITION_CONTEXT *above_ctx = above_seg_context + mi_col;

   const PARTITION_CONTEXT *left_ctx = left_seg_context + (mi_row & MI_MASK);

   int bsl = mi_width_log2(sb_type), bs = 1 << bsl;

   int above = 0, left = 0, i;

   int boffset = mi_width_log2(BLOCK_64X64) - bsl;

   assert(mi_width_log2(sb_type) == mi_height_log2(sb_type));

   assert(bsl >= 0);

   assert(boffset >= 0);

   for (i = 0; i < bs; i++) {

     above |= above_ctx[i];

     left |= left_ctx[i];

   }

   above = (above & (1 << boffset)) > 0;

   left  = (left & (1 << boffset)) > 0;

   return (left * 2 + above) + bsl * PARTITION_PLOFFSET;

 }

 #endif  // VP9_COMMON_VP9_ONYXC_INT_H_