The Tor Browser: media/libvpx/vp9/common/vp9_onyxc

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

     1 /*

     2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.

     3  *

     4  *  Use of this source code is governed by a BSD-style license

     5  *  that can be found in the LICENSE file in the root of the source

     6  *  tree. An additional intellectual property rights grant can be found

     7  *  in the file PATENTS.  All contributing project authors may

     8  *  be found in the AUTHORS file in the root of the source tree.

     9  */

    11 #ifndef VP9_COMMON_VP9_ONYXC_INT_H_

    12 #define VP9_COMMON_VP9_ONYXC_INT_H_

    14 #include "./vpx_config.h"

    15 #include "vpx/internal/vpx_codec_internal.h"

    16 #include "./vp9_rtcd.h"

    17 #include "vp9/common/vp9_loopfilter.h"

    18 #include "vp9/common/vp9_entropymv.h"

    19 #include "vp9/common/vp9_entropy.h"

    20 #include "vp9/common/vp9_entropymode.h"

    21 #include "vp9/common/vp9_quant_common.h"

    22 #include "vp9/common/vp9_tile_common.h"

    24 #if CONFIG_VP9_POSTPROC

    25 #include "vp9/common/vp9_postproc.h"

    26 #endif

    28 #define ALLOWED_REFS_PER_FRAME 3

    30 #define NUM_REF_FRAMES_LOG2 3

    31 #define NUM_REF_FRAMES (1 << NUM_REF_FRAMES_LOG2)

    33 // 1 scratch frame for the new frame, 3 for scaled references on the encoder

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

    35 // normal reference pool.

    36 #define NUM_YV12_BUFFERS (NUM_REF_FRAMES + 4)

    38 #define NUM_FRAME_CONTEXTS_LOG2 2

    39 #define NUM_FRAME_CONTEXTS (1 << NUM_FRAME_CONTEXTS_LOG2)

    41 typedef struct frame_contexts {

    42   vp9_prob y_mode_prob[BLOCK_SIZE_GROUPS][INTRA_MODES - 1];

    43   vp9_prob uv_mode_prob[INTRA_MODES][INTRA_MODES - 1];

    44   vp9_prob partition_prob[PARTITION_CONTEXTS][PARTITION_TYPES - 1];

    45   vp9_coeff_probs_model coef_probs[TX_SIZES][BLOCK_TYPES];

    46   vp9_prob switchable_interp_prob[SWITCHABLE_FILTER_CONTEXTS]

    47                                  [SWITCHABLE_FILTERS - 1];

    48   vp9_prob inter_mode_probs[INTER_MODE_CONTEXTS][INTER_MODES - 1];

    49   vp9_prob intra_inter_prob[INTRA_INTER_CONTEXTS];

    50   vp9_prob comp_inter_prob[COMP_INTER_CONTEXTS];

    51   vp9_prob single_ref_prob[REF_CONTEXTS][2];

    52   vp9_prob comp_ref_prob[REF_CONTEXTS];

    53   struct tx_probs tx_probs;

    54   vp9_prob mbskip_probs[MBSKIP_CONTEXTS];

    55   nmv_context nmvc;

    56 } FRAME_CONTEXT;

    58 typedef struct {

    59   unsigned int y_mode[BLOCK_SIZE_GROUPS][INTRA_MODES];

    60   unsigned int uv_mode[INTRA_MODES][INTRA_MODES];

    61   unsigned int partition[PARTITION_CONTEXTS][PARTITION_TYPES];

    62   vp9_coeff_count_model coef[TX_SIZES][BLOCK_TYPES];

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

    64                          [COEF_BANDS][PREV_COEF_CONTEXTS];

    65   unsigned int switchable_interp[SWITCHABLE_FILTER_CONTEXTS]

    66                                 [SWITCHABLE_FILTERS];

    67   unsigned int inter_mode[INTER_MODE_CONTEXTS][INTER_MODES];

    68   unsigned int intra_inter[INTRA_INTER_CONTEXTS][2];

    69   unsigned int comp_inter[COMP_INTER_CONTEXTS][2];

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

    71   unsigned int comp_ref[REF_CONTEXTS][2];

    72   struct tx_counts tx;

    73   unsigned int mbskip[MBSKIP_CONTEXTS][2];

    74   nmv_context_counts mv;

    75 } FRAME_COUNTS;

    78 typedef enum {

    79   SINGLE_PREDICTION_ONLY = 0,

    80   COMP_PREDICTION_ONLY   = 1,

    81   HYBRID_PREDICTION      = 2,

    82   NB_PREDICTION_TYPES    = 3,

    83 } COMPPREDMODE_TYPE;

    85 typedef struct VP9Common {

    86   struct vpx_internal_error_info  error;

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

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

    90 #if CONFIG_ALPHA

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

    92 #endif

    94   COLOR_SPACE color_space;

    96   int width;

    97   int height;

    98   int display_width;

    99   int display_height;

   100   int last_width;

   101   int last_height;

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

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

   105   // support additional planes.

   106   int subsampling_x;

   107   int subsampling_y;

   109   YV12_BUFFER_CONFIG *frame_to_show;

   111   YV12_BUFFER_CONFIG yv12_fb[NUM_YV12_BUFFERS];

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

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

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

   116   // roll new_fb_idx into it.

   118   // Each frame can reference ALLOWED_REFS_PER_FRAME buffers

   119   int active_ref_idx[ALLOWED_REFS_PER_FRAME];

   120   struct scale_factors active_ref_scale[ALLOWED_REFS_PER_FRAME];

   121   struct scale_factors_common active_ref_scale_comm[ALLOWED_REFS_PER_FRAME];

   122   int new_fb_idx;

   124   YV12_BUFFER_CONFIG post_proc_buffer;

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

   127   FRAME_TYPE frame_type;

   129   int show_frame;

   130   int last_show_frame;

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

   133   int intra_only;

   135   int allow_high_precision_mv;

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

   138   // 0 or 1 implies don't reset, 2 reset just the context specified in the

   139   // frame header, 3 reset all contexts.

   140   int reset_frame_context;

   142   int frame_flags;

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

   144   // MODE_INFO (8-pixel) units.

   145   int MBs;

   146   int mb_rows, mi_rows;

   147   int mb_cols, mi_cols;

   148   int mode_info_stride;

   150   /* profile settings */

   151   TX_MODE tx_mode;

   153   int base_qindex;

   154   int y_dc_delta_q;

   155   int uv_dc_delta_q;

   156   int uv_ac_delta_q;

   157 #if CONFIG_ALPHA

   158   int a_dc_delta_q;

   159   int a_ac_delta_q;

   160 #endif

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

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

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

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

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

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

   170   MODE_INFO **mi_grid_base;

   171   MODE_INFO **mi_grid_visible;

   172   MODE_INFO **prev_mi_grid_base;

   173   MODE_INFO **prev_mi_grid_visible;

   175   // Persistent mb segment id map used in prediction.

   176   unsigned char *last_frame_seg_map;

   178   INTERPOLATION_TYPE mcomp_filter_type;

   180   loop_filter_info_n lf_info;

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

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

   186   struct loopfilter lf;

   187   struct segmentation seg;

   189   // Context probabilities for reference frame prediction

   190   int allow_comp_inter_inter;

   191   MV_REFERENCE_FRAME comp_fixed_ref;

   192   MV_REFERENCE_FRAME comp_var_ref[2];

   193   COMPPREDMODE_TYPE comp_pred_mode;

   195   FRAME_CONTEXT fc;  /* this frame entropy */

   196   FRAME_CONTEXT frame_contexts[NUM_FRAME_CONTEXTS];

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

   198   FRAME_COUNTS counts;

   200   unsigned int current_video_frame;

   201   int version;

   203 #if CONFIG_VP9_POSTPROC

   204   struct postproc_state  postproc_state;

   205 #endif

   207   int error_resilient_mode;

   208   int frame_parallel_decoding_mode;

   210   int log2_tile_cols, log2_tile_rows;

   211 } VP9_COMMON;

   213 // ref == 0 => LAST_FRAME

   214 // ref == 1 => GOLDEN_FRAME

   215 // ref == 2 => ALTREF_FRAME

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

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

   218 }

   220 static YV12_BUFFER_CONFIG *get_frame_new_buffer(VP9_COMMON *cm) {

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

   222 }

   224 static int get_free_fb(VP9_COMMON *cm) {

   225   int i;

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

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

   228       break;

   230   assert(i < NUM_YV12_BUFFERS);

   231   cm->fb_idx_ref_cnt[i] = 1;

   232   return i;

   233 }

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

   236   if (buf[*idx] > 0)

   237     buf[*idx]--;

   239   *idx = new_idx;

   241   buf[new_idx]++;

   242 }

   244 static int mi_cols_aligned_to_sb(int n_mis) {

   245   return ALIGN_POWER_OF_TWO(n_mis, MI_BLOCK_SIZE_LOG2);

   246 }

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

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

   250                                      : cm->fc.partition_prob[ctx];

   251 }

   253 static INLINE void set_skip_context(

   254     MACROBLOCKD *xd,

   255     ENTROPY_CONTEXT *above_context[MAX_MB_PLANE],

   256     ENTROPY_CONTEXT left_context[MAX_MB_PLANE][16],

   257     int mi_row, int mi_col) {

   258   const int above_idx = mi_col * 2;

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

   260   int i;

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

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

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

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

   265   }

   266 }

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

   269                            int mi_row, int bh,

   270                            int mi_col, int bw,

   271                            int mi_rows, int mi_cols) {

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

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

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

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

   277   // Are edges available for intra prediction?

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

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

   280 }

   282 static void set_prev_mi(VP9_COMMON *cm) {

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

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

   285                                        !cm->error_resilient_mode &&

   286                                        !cm->intra_only &&

   287                                        cm->last_show_frame;

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

   289   // context cannot be used.

   290   cm->prev_mi = use_prev_in_find_mv_refs ?

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

   292 }

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

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

   296 }

   298 static INLINE void update_partition_context(

   299     PARTITION_CONTEXT *above_seg_context,

   300     PARTITION_CONTEXT left_seg_context[8],

   301     int mi_row, int mi_col,

   302     BLOCK_SIZE sb_type,

   303     BLOCK_SIZE sb_size) {

   304   PARTITION_CONTEXT *above_ctx = above_seg_context + mi_col;

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

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

   308   const int bwl = b_width_log2(sb_type);

   309   const int bhl = b_height_log2(sb_type);

   310   const int boffset = b_width_log2(BLOCK_64X64) - bsl;

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

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

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

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

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

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

   319   // bits of smaller block sizes to be zero.

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

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

   322 }

   324 static INLINE int partition_plane_context(

   325     const PARTITION_CONTEXT *above_seg_context,

   326     const PARTITION_CONTEXT left_seg_context[8],

   327     int mi_row, int mi_col,

   328     BLOCK_SIZE sb_type) {

   329   const PARTITION_CONTEXT *above_ctx = above_seg_context + mi_col;

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

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

   333   int above = 0, left = 0, i;

   334   int boffset = mi_width_log2(BLOCK_64X64) - bsl;

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

   337   assert(bsl >= 0);

   338   assert(boffset >= 0);

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

   341     above |= above_ctx[i];

   342     left |= left_ctx[i];

   343   }

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

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

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

   348 }

   350 #endif  // VP9_COMMON_VP9_ONYXC_INT_H_

The Tor Browser / file revision

media/libvpx/vp9/common/vp9_onyxc_int.h@b8a032363ba2

media/libvpx/vp9/common/vp9_onyxc_int.h