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/thread.h" 33 #include "libavutil/internal.h" 34 35 #include "vp9.h" 36 #include "vp9dsp.h" 37 #include "vp9shared.h" 38 39 enum MVJoint { 40 MV_JOINT_ZERO, 41 MV_JOINT_H, 42 MV_JOINT_V, 43 MV_JOINT_HV, 44 }; 45 46 typedef struct ProbContext { 47 uint8_t y_mode[4][9]; 48 uint8_t uv_mode[10][9]; 49 uint8_t filter[4][2]; 50 uint8_t mv_mode[7][3]; 51 uint8_t intra[4]; 52 uint8_t comp[5]; 53 uint8_t single_ref[5][2]; 54 uint8_t comp_ref[5]; 55 uint8_t tx32p[2][3]; 56 uint8_t tx16p[2][2]; 57 uint8_t tx8p[2]; 58 uint8_t skip[3]; 59 uint8_t mv_joint[3]; 60 struct { 61 uint8_t sign; 62 uint8_t classes[10]; 63 uint8_t class0; 64 uint8_t bits[10]; 65 uint8_t class0_fp[2][3]; 66 uint8_t fp[3]; 67 uint8_t class0_hp; 68 uint8_t hp; 69 } mv_comp[2]; 70 uint8_t partition[4][4][3]; 71 } ProbContext; 72 73 typedef struct VP9Filter { 74 uint8_t level[8 * 8]; 75 uint8_t /* bit=col */ mask[2 /* 0=y, 1=uv */][2 /* 0=col, 1=row */] 76 [8 /* rows */][4 /* 0=16, 1=8, 2=4, 3=inner4 */]; 77 } VP9Filter; 78 79 typedef struct VP9Block { 80 uint8_t seg_id, intra, comp, ref[2], mode[4], uvmode, skip; 81 enum FilterMode filter; 82 VP56mv mv[4 /* b_idx */][2 /* ref */]; 83 enum BlockSize bs; 84 enum TxfmMode tx, uvtx; 85 enum BlockLevel bl; 86 enum BlockPartition bp; 87 } VP9Block; 88 89 typedef struct VP9TileData VP9TileData; 90 91 typedef struct VP9Context { 92 VP9SharedContext s; 93 VP9TileData *td; 94 95 VP9DSPContext dsp; 96 VideoDSPContext vdsp; 97 GetBitContext gb; 98 VP56RangeCoder c; 99 int pass, active_tile_cols; 100 101 #if HAVE_THREADS 102 pthread_mutex_t progress_mutex; 103 pthread_cond_t progress_cond; 104 atomic_int *entries; 105 #endif 106 107 uint8_t ss_h, ss_v; 108 uint8_t last_bpp, bpp_index, bytesperpixel; 109 uint8_t last_keyframe; 110 // sb_cols/rows, rows/cols and last_fmt are used for allocating all internal 111 // arrays, and are thus per-thread. w/h and gf_fmt are synced between threads 112 // and are therefore per-stream. pix_fmt represents the value in the header 113 // of the currently processed frame. 114 int w, h; 115 enum AVPixelFormat pix_fmt, last_fmt, gf_fmt; 116 unsigned sb_cols, sb_rows, rows, cols; 117 ThreadFrame next_refs[8]; 118 119 struct { 120 uint8_t lim_lut[64]; 121 uint8_t mblim_lut[64]; 122 } filter_lut; 123 struct { 124 ProbContext p; 125 uint8_t coef[4][2][2][6][6][3]; 126 } prob_ctx[4]; 127 struct { 128 ProbContext p; 129 uint8_t coef[4][2][2][6][6][11]; 130 } prob; 131 132 // contextual (above) cache 133 uint8_t *above_partition_ctx; 134 uint8_t *above_mode_ctx; 135 // FIXME maybe merge some of the below in a flags field? 136 uint8_t *above_y_nnz_ctx; 137 uint8_t *above_uv_nnz_ctx[2]; 138 uint8_t *above_skip_ctx; // 1bit 139 uint8_t *above_txfm_ctx; // 2bit 140 uint8_t *above_segpred_ctx; // 1bit 141 uint8_t *above_intra_ctx; // 1bit 142 uint8_t *above_comp_ctx; // 1bit 143 uint8_t *above_ref_ctx; // 2bit 144 uint8_t *above_filter_ctx; 145 VP56mv (*above_mv_ctx)[2]; 146 147 // whole-frame cache 148 uint8_t *intra_pred_data[3]; 149 VP9Filter *lflvl; 150 151 // block reconstruction intermediates 152 int block_alloc_using_2pass; 153 uint16_t mvscale[3][2]; 154 uint8_t mvstep[3][2]; 155 } VP9Context; 156 157 struct VP9TileData { 158 //VP9Context should be const, but because of the threading API(generates 159 //a lot of warnings) it's not. 160 VP9Context *s; 161 VP56RangeCoder *c_b; 162 VP56RangeCoder *c; 163 int row, row7, col, col7; 164 uint8_t *dst[3]; 165 ptrdiff_t y_stride, uv_stride; 166 VP9Block *b_base, *b; 167 unsigned tile_col_start; 168 169 struct { 170 unsigned y_mode[4][10]; 171 unsigned uv_mode[10][10]; 172 unsigned filter[4][3]; 173 unsigned mv_mode[7][4]; 174 unsigned intra[4][2]; 175 unsigned comp[5][2]; 176 unsigned single_ref[5][2][2]; 177 unsigned comp_ref[5][2]; 178 unsigned tx32p[2][4]; 179 unsigned tx16p[2][3]; 180 unsigned tx8p[2][2]; 181 unsigned skip[3][2]; 182 unsigned mv_joint[4]; 183 struct { 184 unsigned sign[2]; 185 unsigned classes[11]; 186 unsigned class0[2]; 187 unsigned bits[10][2]; 188 unsigned class0_fp[2][4]; 189 unsigned fp[4]; 190 unsigned class0_hp[2]; 191 unsigned hp[2]; 192 } mv_comp[2]; 193 unsigned partition[4][4][4]; 194 unsigned coef[4][2][2][6][6][3]; 195 unsigned eob[4][2][2][6][6][2]; 196 } counts; 197 198 // whole-frame cache 199 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[135 * 144 * 2]; 200 201 // contextual (left) cache 202 DECLARE_ALIGNED(16, uint8_t, left_y_nnz_ctx)[16]; 203 DECLARE_ALIGNED(16, uint8_t, left_mode_ctx)[16]; 204 DECLARE_ALIGNED(16, VP56mv, left_mv_ctx)[16][2]; 205 DECLARE_ALIGNED(16, uint8_t, left_uv_nnz_ctx)[2][16]; 206 DECLARE_ALIGNED(8, uint8_t, left_partition_ctx)[8]; 207 DECLARE_ALIGNED(8, uint8_t, left_skip_ctx)[8]; 208 DECLARE_ALIGNED(8, uint8_t, left_txfm_ctx)[8]; 209 DECLARE_ALIGNED(8, uint8_t, left_segpred_ctx)[8]; 210 DECLARE_ALIGNED(8, uint8_t, left_intra_ctx)[8]; 211 DECLARE_ALIGNED(8, uint8_t, left_comp_ctx)[8]; 212 DECLARE_ALIGNED(8, uint8_t, left_ref_ctx)[8]; 213 DECLARE_ALIGNED(8, uint8_t, left_filter_ctx)[8]; 214 // block reconstruction intermediates 215 DECLARE_ALIGNED(32, uint8_t, tmp_y)[64 * 64 * 2]; 216 DECLARE_ALIGNED(32, uint8_t, tmp_uv)[2][64 * 64 * 2]; 217 struct { int x, y; } min_mv, max_mv; 218 int16_t *block_base, *block, *uvblock_base[2], *uvblock[2]; 219 uint8_t *eob_base, *uveob_base[2], *eob, *uveob[2]; 220 }; 221 222 void ff_vp9_fill_mv(VP9TileData *td, VP56mv *mv, int mode, int sb); 223 224 void ff_vp9_adapt_probs(VP9Context *s); 225 226 void ff_vp9_decode_block(VP9TileData *td, int row, int col, 227 VP9Filter *lflvl, ptrdiff_t yoff, ptrdiff_t uvoff, 228 enum BlockLevel bl, enum BlockPartition bp); 229 230 void ff_vp9_loopfilter_sb(AVCodecContext *avctx, VP9Filter *lflvl, 231 int row, int col, ptrdiff_t yoff, ptrdiff_t uvoff); 232 233 void ff_vp9_intra_recon_8bpp(VP9TileData *td, 234 ptrdiff_t y_off, ptrdiff_t uv_off); 235 void ff_vp9_intra_recon_16bpp(VP9TileData *td, 236 ptrdiff_t y_off, ptrdiff_t uv_off); 237 void ff_vp9_inter_recon_8bpp(VP9TileData *td); 238 void ff_vp9_inter_recon_16bpp(VP9TileData *td); 239 240 #endif /* AVCODEC_VP9DEC_H */ 241