vp9_onyxc_int.h 10.2 KB
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/*
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 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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 *
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 *  Use of this source code is governed by a BSD-style license
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 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
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 *  in the file PATENTS.  All contributing project authors may
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 *  be found in the AUTHORS file in the root of the source tree.
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 */

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#ifndef VP9_COMMON_VP9_ONYXC_INT_H_
#define VP9_COMMON_VP9_ONYXC_INT_H_
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#include "vpx_config.h"
#include "vpx/internal/vpx_codec_internal.h"
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#include "vp9_rtcd.h"
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#include "vp9/common/vp9_loopfilter.h"
#include "vp9/common/vp9_entropymv.h"
#include "vp9/common/vp9_entropy.h"
#include "vp9/common/vp9_entropymode.h"
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#include "vp9/common/vp9_quant_common.h"
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#if CONFIG_POSTPROC
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#include "vp9/common/vp9_postproc.h"
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#endif
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/* Create/destroy static data structures. */

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// Define the number of candidate reference buffers.
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#define NUM_REF_FRAMES 8
#define NUM_REF_FRAMES_LG2 3
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#define ALLOWED_REFS_PER_FRAME 3

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// 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)
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#define NUM_FRAME_CONTEXTS_LG2 2
#define NUM_FRAME_CONTEXTS (1 << NUM_FRAME_CONTEXTS_LG2)

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#define COMP_PRED_CONTEXTS   2
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#define MAX_LAG_BUFFERS 25

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typedef struct frame_contexts {
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  vp9_prob y_mode_prob[VP9_INTRA_MODES - 1]; /* interframe intra mode probs */
  vp9_prob uv_mode_prob[VP9_INTRA_MODES][VP9_INTRA_MODES - 1];
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  vp9_prob partition_prob[NUM_PARTITION_CONTEXTS][PARTITION_TYPES - 1];
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  nmv_context nmvc;
  nmv_context pre_nmvc;
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  /* interframe intra mode probs */
  vp9_prob pre_y_mode_prob[VP9_INTRA_MODES - 1];
  vp9_prob pre_uv_mode_prob[VP9_INTRA_MODES][VP9_INTRA_MODES - 1];
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  vp9_prob pre_partition_prob[NUM_PARTITION_CONTEXTS][PARTITION_TYPES - 1];
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  /* interframe intra mode probs */
  unsigned int y_mode_counts[VP9_INTRA_MODES];
  unsigned int uv_mode_counts[VP9_INTRA_MODES][VP9_INTRA_MODES];
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  unsigned int partition_counts[NUM_PARTITION_CONTEXTS][PARTITION_TYPES];
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  vp9_coeff_probs_model coef_probs[TX_SIZE_MAX_SB][BLOCK_TYPES];
  vp9_coeff_probs_model pre_coef_probs[TX_SIZE_MAX_SB][BLOCK_TYPES];
  vp9_coeff_count_model coef_counts[TX_SIZE_MAX_SB][BLOCK_TYPES];
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  unsigned int eob_branch_counts[TX_SIZE_MAX_SB][BLOCK_TYPES][REF_TYPES]
                                [COEF_BANDS][PREV_COEF_CONTEXTS];

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  nmv_context_counts NMVcount;
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  vp9_prob switchable_interp_prob[VP9_SWITCHABLE_FILTERS + 1]
                                 [VP9_SWITCHABLE_FILTERS - 1];
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  vp9_prob pre_switchable_interp_prob[VP9_SWITCHABLE_FILTERS + 1]
      [VP9_SWITCHABLE_FILTERS - 1];
  unsigned int switchable_interp_count[VP9_SWITCHABLE_FILTERS + 1]
                                      [VP9_SWITCHABLE_FILTERS];

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  vp9_prob inter_mode_probs[INTER_MODE_CONTEXTS][VP9_INTER_MODES - 1];
  vp9_prob pre_inter_mode_probs[INTER_MODE_CONTEXTS][VP9_INTER_MODES - 1];
  unsigned int inter_mode_counts[INTER_MODE_CONTEXTS][VP9_INTER_MODES - 1][2];
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} FRAME_CONTEXT;

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typedef enum {
  SINGLE_PREDICTION_ONLY = 0,
  COMP_PREDICTION_ONLY   = 1,
  HYBRID_PREDICTION      = 2,
  NB_PREDICTION_TYPES    = 3,
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} COMPPREDMODE_TYPE;
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typedef enum {
  ONLY_4X4            = 0,
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  ALLOW_8X8           = 1,
  ALLOW_16X16         = 2,
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  ALLOW_32X32         = 3,
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  TX_MODE_SELECT      = 4,
  NB_TXFM_MODES       = 5,
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} TXFM_MODE;

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typedef struct VP9Common {
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  struct vpx_internal_error_info  error;
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  DECLARE_ALIGNED(16, int16_t, y_dequant[QINDEX_RANGE][2]);
  DECLARE_ALIGNED(16, int16_t, uv_dequant[QINDEX_RANGE][2]);
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#if CONFIG_ALPHA
  DECLARE_ALIGNED(16, int16_t, a_dequant[QINDEX_RANGE][2]);
#endif
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  int width;
  int height;
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  int display_width;
  int display_height;
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  int last_width;
  int last_height;
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  // 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;

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  YUV_TYPE clr_type;
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  YV12_BUFFER_CONFIG *frame_to_show;
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  YV12_BUFFER_CONFIG yv12_fb[NUM_YV12_BUFFERS];
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  int fb_idx_ref_cnt[NUM_YV12_BUFFERS]; /* reference counts */
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  int ref_frame_map[NUM_REF_FRAMES]; /* maps fb_idx to reference slot */

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  // 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];
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  int new_fb_idx;
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  YV12_BUFFER_CONFIG post_proc_buffer;
  YV12_BUFFER_CONFIG temp_scale_frame;
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  FRAME_TYPE last_frame_type;  /* Save last frame's frame type for motion search. */
  FRAME_TYPE frame_type;
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  int show_frame;
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  int last_show_frame;
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  // Flag signaling that the frame is encoded using only INTRA modes.
  int intra_only;

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

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  int frame_flags;
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  // MBs, mb_rows/cols is in 16-pixel units; mi_rows/cols is in
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  // MODE_INFO (8-pixel) units.
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  int MBs;
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  int mb_rows, mi_rows;
  int mb_cols, mi_cols;
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  int mode_info_stride;
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  /* profile settings */
  int experimental;
  TXFM_MODE txfm_mode;
  COMPPREDMODE_TYPE comp_pred_mode;
  int no_lpf;
  int use_bilinear_mc_filter;
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  int base_qindex;
  int last_kf_gf_q;  /* Q used on the last GF or KF */
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  int y_dc_delta_q;
  int uv_dc_delta_q;
  int uv_ac_delta_q;
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#if CONFIG_ALPHA
  int a_dc_delta_q;
  int a_ac_delta_q;
#endif
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  unsigned int frames_since_golden;
  unsigned int frames_till_alt_ref_frame;
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  /* We allocate a MODE_INFO struct for each macroblock, together with
     an extra row on top and column on the left to simplify prediction. */
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  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) */
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  // Persistent mb segment id map used in prediction.
  unsigned char *last_frame_seg_map;
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  INTERPOLATIONFILTERTYPE mcomp_filter_type;
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  loop_filter_info_n lf_info;
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  int filter_level;
  int last_sharpness_level;
  int sharpness_level;
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  int refresh_frame_context;    /* Two state 0 = NO, 1 = YES */
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  int ref_frame_sign_bias[MAX_REF_FRAMES];    /* Two state 0, 1 */
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  /* Y,U,V */
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  ENTROPY_CONTEXT *above_context[MAX_MB_PLANE];
  ENTROPY_CONTEXT left_context[MAX_MB_PLANE][16];
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  // partition contexts
  PARTITION_CONTEXT *above_seg_context;
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  PARTITION_CONTEXT left_seg_context[8];
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  /* keyframe block modes are predicted by their above, left neighbors */
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  vp9_prob kf_y_mode_prob[VP9_INTRA_MODES]
                         [VP9_INTRA_MODES]
                         [VP9_INTRA_MODES - 1];
  vp9_prob kf_uv_mode_prob[VP9_INTRA_MODES] [VP9_INTRA_MODES - 1];
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  vp9_prob prob_intra_coded;
  vp9_prob prob_last_coded;
  vp9_prob prob_gf_coded;
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  // Context probabilities when using predictive coding of segment id
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  vp9_prob segment_pred_probs[PREDICTION_PROBS];
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  unsigned char temporal_update;
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  // Context probabilities for reference frame prediction
  unsigned char ref_scores[MAX_REF_FRAMES];
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  vp9_prob ref_pred_probs[PREDICTION_PROBS];
  vp9_prob mod_refprobs[MAX_REF_FRAMES][PREDICTION_PROBS];
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  vp9_prob prob_comppred[COMP_PRED_CONTEXTS];
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  // FIXME contextualize
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  vp9_prob prob_tx[TX_SIZE_MAX_SB - 1];
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  vp9_prob mbskip_pred_probs[MBSKIP_CONTEXTS];
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  FRAME_CONTEXT fc;  /* this frame entropy */
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  FRAME_CONTEXT frame_contexts[NUM_FRAME_CONTEXTS];
  unsigned int  frame_context_idx; /* Context to use/update */
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  unsigned int current_video_frame;
  int near_boffset[3];
  int version;
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  double bitrate;
  double framerate;
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#if CONFIG_POSTPROC
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  struct postproc_state  postproc_state;
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#endif
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  int error_resilient_mode;
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  int frame_parallel_decoding_mode;
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  int tile_columns, log2_tile_columns;
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  int cur_tile_mi_col_start, cur_tile_mi_col_end, cur_tile_col_idx;
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  int tile_rows, log2_tile_rows;
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  int cur_tile_mi_row_start, cur_tile_mi_row_end, cur_tile_row_idx;
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} VP9_COMMON;
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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]++;
}

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static int mi_cols_aligned_to_sb(VP9_COMMON *cm) {
  return 2 * ((cm->mb_cols + 3) & ~3);
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}

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static INLINE void set_partition_seg_context(VP9_COMMON *cm,
                                             MACROBLOCKD *xd,
                                             int mi_row, int mi_col) {
  xd->above_seg_context = cm->above_seg_context + mi_col;
  xd->left_seg_context  = cm->left_seg_context + (mi_row & MI_MASK);
}

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static void set_mi_row_col(VP9_COMMON *cm, MACROBLOCKD *xd,
                       int mi_row, int bh,
                       int mi_col, int bw) {
  xd->mb_to_top_edge    = -((mi_row * MI_SIZE) << 3);
  xd->mb_to_bottom_edge = ((cm->mi_rows - bh - mi_row) * MI_SIZE) << 3;
  xd->mb_to_left_edge   = -((mi_col * MI_SIZE) << 3);
  xd->mb_to_right_edge  = ((cm->mi_cols - bw - mi_col) * MI_SIZE) << 3;
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  // Are edges available for intra prediction?
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  xd->up_available    = (mi_row != 0);
  xd->left_available  = (mi_col > cm->cur_tile_mi_col_start);
  xd->right_available = (mi_col + bw < cm->cur_tile_mi_col_end);
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}

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static int get_mi_row(const MACROBLOCKD *xd) {
  return ((-xd->mb_to_top_edge) >> (3 + LOG2_MI_SIZE));
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}

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static int get_mi_col(const MACROBLOCKD *xd) {
  return ((-xd->mb_to_left_edge) >> (3 + LOG2_MI_SIZE));
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}
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static int get_token_alloc(int mb_rows, int mb_cols) {
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  return mb_rows * mb_cols * (48 * 16 + 4);
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}
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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->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;
}
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#endif  // VP9_COMMON_VP9_ONYXC_INT_H_