2 * VP9 compatible video decoder
4 * Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com>
5 * Copyright (C) 2013 Clément Bœsch <u pkh me>
7 * This file is part of FFmpeg.
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.
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.
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
24 #ifndef AVCODEC_VP9DEC_H
25 #define AVCODEC_VP9DEC_H
29 #include <stdatomic.h>
31 #include "libavutil/buffer.h"
32 #include "libavutil/thread.h"
33 #include "libavutil/internal.h"
37 #include "vp9shared.h"
46 typedef struct ProbContext {
48 uint8_t uv_mode[10][9];
50 uint8_t mv_mode[7][3];
53 uint8_t single_ref[5][2];
65 uint8_t class0_fp[2][3];
70 uint8_t partition[4][4][3];
73 typedef struct VP9Filter {
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 */];
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 */];
84 enum TxfmMode tx, uvtx;
86 enum BlockPartition bp;
89 typedef struct VP9TileData VP9TileData;
91 typedef struct VP9Context {
99 int pass, active_tile_cols;
102 pthread_mutex_t progress_mutex;
103 pthread_cond_t progress_cond;
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.
115 enum AVPixelFormat pix_fmt, last_fmt, gf_fmt;
116 unsigned sb_cols, sb_rows, rows, cols;
117 ThreadFrame next_refs[8];
121 uint8_t mblim_lut[64];
125 uint8_t coef[4][2][2][6][6][3];
129 uint8_t coef[4][2][2][6][6][11];
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];
148 uint8_t *intra_pred_data[3];
151 // block reconstruction intermediates
152 int block_alloc_using_2pass;
153 uint16_t mvscale[3][2];
154 uint8_t mvstep[3][2];
158 //VP9Context should be const, but because of the threading API(generates
159 //a lot of warnings) it's not.
163 int row, row7, col, col7;
165 ptrdiff_t y_stride, uv_stride;
166 VP9Block *b_base, *b;
167 unsigned tile_col_start;
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];
176 unsigned single_ref[5][2][2];
177 unsigned comp_ref[5][2];
178 unsigned tx32p[2][4];
179 unsigned tx16p[2][3];
182 unsigned mv_joint[4];
185 unsigned classes[11];
187 unsigned bits[10][2];
188 unsigned class0_fp[2][4];
190 unsigned class0_hp[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];
199 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[135 * 144 * 2];
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];
222 void ff_vp9_fill_mv(VP9TileData *td, VP56mv *mv, int mode, int sb);
224 void ff_vp9_adapt_probs(VP9Context *s);
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);
230 void ff_vp9_loopfilter_sb(AVCodecContext *avctx, VP9Filter *lflvl,
231 int row, int col, ptrdiff_t yoff, ptrdiff_t uvoff);
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);
240 #endif /* AVCODEC_VP9DEC_H */