1/* 2 * VP9 compatible video decoder 3 * 4 * Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com> 5 * Copyright (C) 2013 Clément Bœsch <u pkh me> 6 * 7 * This file is part of FFmpeg. 8 * 9 * FFmpeg is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU Lesser General Public 11 * License as published by the Free Software Foundation; either 12 * version 2.1 of the License, or (at your option) any later version. 13 * 14 * FFmpeg is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * Lesser General Public License for more details. 18 * 19 * You should have received a copy of the GNU Lesser General Public 20 * License along with FFmpeg; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 22 */ 23 24#ifndef AVCODEC_VP9DEC_H 25#define AVCODEC_VP9DEC_H 26 27#include <stddef.h> 28#include <stdint.h> 29#include <stdatomic.h> 30 31#include "libavutil/buffer.h" 32#include "libavutil/mem_internal.h" 33#include "libavutil/thread.h" 34#include "libavutil/internal.h" 35 36#include "vp9.h" 37#include "vp9dsp.h" 38#include "vp9shared.h" 39 40#define REF_INVALID_SCALE 0xFFFF 41 42enum MVJoint { 43 MV_JOINT_ZERO, 44 MV_JOINT_H, 45 MV_JOINT_V, 46 MV_JOINT_HV, 47}; 48 49typedef struct ProbContext { 50 uint8_t y_mode[4][9]; 51 uint8_t uv_mode[10][9]; 52 uint8_t filter[4][2]; 53 uint8_t mv_mode[7][3]; 54 uint8_t intra[4]; 55 uint8_t comp[5]; 56 uint8_t single_ref[5][2]; 57 uint8_t comp_ref[5]; 58 uint8_t tx32p[2][3]; 59 uint8_t tx16p[2][2]; 60 uint8_t tx8p[2]; 61 uint8_t skip[3]; 62 uint8_t mv_joint[3]; 63 struct { 64 uint8_t sign; 65 uint8_t classes[10]; 66 uint8_t class0; 67 uint8_t bits[10]; 68 uint8_t class0_fp[2][3]; 69 uint8_t fp[3]; 70 uint8_t class0_hp; 71 uint8_t hp; 72 } mv_comp[2]; 73 uint8_t partition[4][4][3]; 74} ProbContext; 75 76typedef struct VP9Filter { 77 uint8_t level[8 * 8]; 78 uint8_t /* bit=col */ mask[2 /* 0=y, 1=uv */][2 /* 0=col, 1=row */] 79 [8 /* rows */][4 /* 0=16, 1=8, 2=4, 3=inner4 */]; 80} VP9Filter; 81 82typedef struct VP9Block { 83 uint8_t seg_id, intra, comp, ref[2], mode[4], uvmode, skip; 84 enum FilterMode filter; 85 VP56mv mv[4 /* b_idx */][2 /* ref */]; 86 enum BlockSize bs; 87 enum TxfmMode tx, uvtx; 88 enum BlockLevel bl; 89 enum BlockPartition bp; 90} VP9Block; 91 92typedef struct VP9TileData VP9TileData; 93 94typedef struct VP9Context { 95 VP9SharedContext s; 96 VP9TileData *td; 97 98 VP9DSPContext dsp; 99 VideoDSPContext vdsp; 100 GetBitContext gb; 101 VP56RangeCoder c; 102 int pass, active_tile_cols; 103 104#if HAVE_THREADS 105 pthread_mutex_t progress_mutex; 106 pthread_cond_t progress_cond; 107 atomic_int *entries; 108 unsigned pthread_init_cnt; 109#endif 110 111 uint8_t ss_h, ss_v; 112 uint8_t last_bpp, bpp_index, bytesperpixel; 113 uint8_t last_keyframe; 114 // sb_cols/rows, rows/cols and last_fmt are used for allocating all internal 115 // arrays, and are thus per-thread. w/h and gf_fmt are synced between threads 116 // and are therefore per-stream. pix_fmt represents the value in the header 117 // of the currently processed frame. 118 int w, h; 119 enum AVPixelFormat pix_fmt, last_fmt, gf_fmt; 120 unsigned sb_cols, sb_rows, rows, cols; 121 ThreadFrame next_refs[8]; 122 123 struct { 124 uint8_t lim_lut[64]; 125 uint8_t mblim_lut[64]; 126 } filter_lut; 127 struct { 128 ProbContext p; 129 uint8_t coef[4][2][2][6][6][3]; 130 } prob_ctx[4]; 131 struct { 132 ProbContext p; 133 uint8_t coef[4][2][2][6][6][11]; 134 } prob; 135 136 // contextual (above) cache 137 uint8_t *above_partition_ctx; 138 uint8_t *above_mode_ctx; 139 // FIXME maybe merge some of the below in a flags field? 140 uint8_t *above_y_nnz_ctx; 141 uint8_t *above_uv_nnz_ctx[2]; 142 uint8_t *above_skip_ctx; // 1bit 143 uint8_t *above_txfm_ctx; // 2bit 144 uint8_t *above_segpred_ctx; // 1bit 145 uint8_t *above_intra_ctx; // 1bit 146 uint8_t *above_comp_ctx; // 1bit 147 uint8_t *above_ref_ctx; // 2bit 148 uint8_t *above_filter_ctx; 149 VP56mv (*above_mv_ctx)[2]; 150 151 // whole-frame cache 152 uint8_t *intra_pred_data[3]; 153 VP9Filter *lflvl; 154 155 // block reconstruction intermediates 156 int block_alloc_using_2pass; 157 uint16_t mvscale[3][2]; 158 uint8_t mvstep[3][2]; 159 160 // frame specific buffer pools 161 AVBufferPool *frame_extradata_pool; 162 int frame_extradata_pool_size; 163} VP9Context; 164 165struct VP9TileData { 166 //VP9Context should be const, but because of the threading API(generates 167 //a lot of warnings) it's not. 168 VP9Context *s; 169 VP56RangeCoder *c_b; 170 VP56RangeCoder *c; 171 int row, row7, col, col7; 172 uint8_t *dst[3]; 173 ptrdiff_t y_stride, uv_stride; 174 VP9Block *b_base, *b; 175 unsigned tile_col_start; 176 177 struct { 178 unsigned y_mode[4][10]; 179 unsigned uv_mode[10][10]; 180 unsigned filter[4][3]; 181 unsigned mv_mode[7][4]; 182 unsigned intra[4][2]; 183 unsigned comp[5][2]; 184 unsigned single_ref[5][2][2]; 185 unsigned comp_ref[5][2]; 186 unsigned tx32p[2][4]; 187 unsigned tx16p[2][3]; 188 unsigned tx8p[2][2]; 189 unsigned skip[3][2]; 190 unsigned mv_joint[4]; 191 struct { 192 unsigned sign[2]; 193 unsigned classes[11]; 194 unsigned class0[2]; 195 unsigned bits[10][2]; 196 unsigned class0_fp[2][4]; 197 unsigned fp[4]; 198 unsigned class0_hp[2]; 199 unsigned hp[2]; 200 } mv_comp[2]; 201 unsigned partition[4][4][4]; 202 unsigned coef[4][2][2][6][6][3]; 203 unsigned eob[4][2][2][6][6][2]; 204 } counts; 205 206 // whole-frame cache 207 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[135 * 144 * 2]; 208 209 // contextual (left) cache 210 DECLARE_ALIGNED(16, uint8_t, left_y_nnz_ctx)[16]; 211 DECLARE_ALIGNED(16, uint8_t, left_mode_ctx)[16]; 212 DECLARE_ALIGNED(16, VP56mv, left_mv_ctx)[16][2]; 213 DECLARE_ALIGNED(16, uint8_t, left_uv_nnz_ctx)[2][16]; 214 DECLARE_ALIGNED(8, uint8_t, left_partition_ctx)[8]; 215 DECLARE_ALIGNED(8, uint8_t, left_skip_ctx)[8]; 216 DECLARE_ALIGNED(8, uint8_t, left_txfm_ctx)[8]; 217 DECLARE_ALIGNED(8, uint8_t, left_segpred_ctx)[8]; 218 DECLARE_ALIGNED(8, uint8_t, left_intra_ctx)[8]; 219 DECLARE_ALIGNED(8, uint8_t, left_comp_ctx)[8]; 220 DECLARE_ALIGNED(8, uint8_t, left_ref_ctx)[8]; 221 DECLARE_ALIGNED(8, uint8_t, left_filter_ctx)[8]; 222 // block reconstruction intermediates 223 DECLARE_ALIGNED(32, uint8_t, tmp_y)[64 * 64 * 2]; 224 DECLARE_ALIGNED(32, uint8_t, tmp_uv)[2][64 * 64 * 2]; 225 struct { int x, y; } min_mv, max_mv; 226 int16_t *block_base, *block, *uvblock_base[2], *uvblock[2]; 227 uint8_t *eob_base, *uveob_base[2], *eob, *uveob[2]; 228 229 // error message 230 int error_info; 231 struct { 232 unsigned int row:13; 233 unsigned int col:13; 234 unsigned int block_size_idx_x:2; 235 unsigned int block_size_idx_y:2; 236 } *block_structure; 237 unsigned int nb_block_structure; 238}; 239 240void ff_vp9_fill_mv(VP9TileData *td, VP56mv *mv, int mode, int sb); 241 242void ff_vp9_adapt_probs(VP9Context *s); 243 244void ff_vp9_decode_block(VP9TileData *td, int row, int col, 245 VP9Filter *lflvl, ptrdiff_t yoff, ptrdiff_t uvoff, 246 enum BlockLevel bl, enum BlockPartition bp); 247 248void ff_vp9_loopfilter_sb(AVCodecContext *avctx, VP9Filter *lflvl, 249 int row, int col, ptrdiff_t yoff, ptrdiff_t uvoff); 250 251void ff_vp9_intra_recon_8bpp(VP9TileData *td, 252 ptrdiff_t y_off, ptrdiff_t uv_off); 253void ff_vp9_intra_recon_16bpp(VP9TileData *td, 254 ptrdiff_t y_off, ptrdiff_t uv_off); 255void ff_vp9_inter_recon_8bpp(VP9TileData *td); 256void ff_vp9_inter_recon_16bpp(VP9TileData *td); 257 258#endif /* AVCODEC_VP9DEC_H */ 259