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"
39 #define REF_INVALID_SCALE 0xFFFF
48 typedef struct ProbContext {
50 uint8_t uv_mode[10][9];
52 uint8_t mv_mode[7][3];
55 uint8_t single_ref[5][2];
67 uint8_t class0_fp[2][3];
72 uint8_t partition[4][4][3];
75 typedef struct VP9Filter {
77 uint8_t /* bit=col */ mask[2 /* 0=y, 1=uv */][2 /* 0=col, 1=row */]
78 [8 /* rows */][4 /* 0=16, 1=8, 2=4, 3=inner4 */];
81 typedef struct VP9Block {
82 uint8_t seg_id, intra, comp, ref[2], mode[4], uvmode, skip;
83 enum FilterMode filter;
84 VP56mv mv[4 /* b_idx */][2 /* ref */];
86 enum TxfmMode tx, uvtx;
88 enum BlockPartition bp;
91 typedef struct VP9TileData VP9TileData;
93 typedef struct VP9Context {
101 int pass, active_tile_cols;
104 pthread_mutex_t progress_mutex;
105 pthread_cond_t progress_cond;
110 uint8_t last_bpp, bpp_index, bytesperpixel;
111 uint8_t last_keyframe;
112 // sb_cols/rows, rows/cols and last_fmt are used for allocating all internal
113 // arrays, and are thus per-thread. w/h and gf_fmt are synced between threads
114 // and are therefore per-stream. pix_fmt represents the value in the header
115 // of the currently processed frame.
117 enum AVPixelFormat pix_fmt, last_fmt, gf_fmt;
118 unsigned sb_cols, sb_rows, rows, cols;
119 ThreadFrame next_refs[8];
123 uint8_t mblim_lut[64];
127 uint8_t coef[4][2][2][6][6][3];
131 uint8_t coef[4][2][2][6][6][11];
134 // contextual (above) cache
135 uint8_t *above_partition_ctx;
136 uint8_t *above_mode_ctx;
137 // FIXME maybe merge some of the below in a flags field?
138 uint8_t *above_y_nnz_ctx;
139 uint8_t *above_uv_nnz_ctx[2];
140 uint8_t *above_skip_ctx; // 1bit
141 uint8_t *above_txfm_ctx; // 2bit
142 uint8_t *above_segpred_ctx; // 1bit
143 uint8_t *above_intra_ctx; // 1bit
144 uint8_t *above_comp_ctx; // 1bit
145 uint8_t *above_ref_ctx; // 2bit
146 uint8_t *above_filter_ctx;
147 VP56mv (*above_mv_ctx)[2];
150 uint8_t *intra_pred_data[3];
153 // block reconstruction intermediates
154 int block_alloc_using_2pass;
155 uint16_t mvscale[3][2];
156 uint8_t mvstep[3][2];
158 // frame specific buffer pools
159 AVBufferPool *frame_extradata_pool;
160 int frame_extradata_pool_size;
164 //VP9Context should be const, but because of the threading API(generates
165 //a lot of warnings) it's not.
169 int row, row7, col, col7;
171 ptrdiff_t y_stride, uv_stride;
172 VP9Block *b_base, *b;
173 unsigned tile_col_start;
176 unsigned y_mode[4][10];
177 unsigned uv_mode[10][10];
178 unsigned filter[4][3];
179 unsigned mv_mode[7][4];
180 unsigned intra[4][2];
182 unsigned single_ref[5][2][2];
183 unsigned comp_ref[5][2];
184 unsigned tx32p[2][4];
185 unsigned tx16p[2][3];
188 unsigned mv_joint[4];
191 unsigned classes[11];
193 unsigned bits[10][2];
194 unsigned class0_fp[2][4];
196 unsigned class0_hp[2];
199 unsigned partition[4][4][4];
200 unsigned coef[4][2][2][6][6][3];
201 unsigned eob[4][2][2][6][6][2];
205 DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[135 * 144 * 2];
207 // contextual (left) cache
208 DECLARE_ALIGNED(16, uint8_t, left_y_nnz_ctx)[16];
209 DECLARE_ALIGNED(16, uint8_t, left_mode_ctx)[16];
210 DECLARE_ALIGNED(16, VP56mv, left_mv_ctx)[16][2];
211 DECLARE_ALIGNED(16, uint8_t, left_uv_nnz_ctx)[2][16];
212 DECLARE_ALIGNED(8, uint8_t, left_partition_ctx)[8];
213 DECLARE_ALIGNED(8, uint8_t, left_skip_ctx)[8];
214 DECLARE_ALIGNED(8, uint8_t, left_txfm_ctx)[8];
215 DECLARE_ALIGNED(8, uint8_t, left_segpred_ctx)[8];
216 DECLARE_ALIGNED(8, uint8_t, left_intra_ctx)[8];
217 DECLARE_ALIGNED(8, uint8_t, left_comp_ctx)[8];
218 DECLARE_ALIGNED(8, uint8_t, left_ref_ctx)[8];
219 DECLARE_ALIGNED(8, uint8_t, left_filter_ctx)[8];
220 // block reconstruction intermediates
221 DECLARE_ALIGNED(32, uint8_t, tmp_y)[64 * 64 * 2];
222 DECLARE_ALIGNED(32, uint8_t, tmp_uv)[2][64 * 64 * 2];
223 struct { int x, y; } min_mv, max_mv;
224 int16_t *block_base, *block, *uvblock_base[2], *uvblock[2];
225 uint8_t *eob_base, *uveob_base[2], *eob, *uveob[2];
232 unsigned int block_size_idx_x:2;
233 unsigned int block_size_idx_y:2;
235 unsigned int nb_block_structure;
238 void ff_vp9_fill_mv(VP9TileData *td, VP56mv *mv, int mode, int sb);
240 void ff_vp9_adapt_probs(VP9Context *s);
242 void ff_vp9_decode_block(VP9TileData *td, int row, int col,
243 VP9Filter *lflvl, ptrdiff_t yoff, ptrdiff_t uvoff,
244 enum BlockLevel bl, enum BlockPartition bp);
246 void ff_vp9_loopfilter_sb(AVCodecContext *avctx, VP9Filter *lflvl,
247 int row, int col, ptrdiff_t yoff, ptrdiff_t uvoff);
249 void ff_vp9_intra_recon_8bpp(VP9TileData *td,
250 ptrdiff_t y_off, ptrdiff_t uv_off);
251 void ff_vp9_intra_recon_16bpp(VP9TileData *td,
252 ptrdiff_t y_off, ptrdiff_t uv_off);
253 void ff_vp9_inter_recon_8bpp(VP9TileData *td);
254 void ff_vp9_inter_recon_16bpp(VP9TileData *td);
256 #endif /* AVCODEC_VP9DEC_H */