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/*
* VP9 compatible video decoder
*
* Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com>
* Copyright (C) 2013 Clément Bœsch <u pkh me>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_VP9_H
#define AVCODEC_VP9_H
#include <stdint.h>
enum BlockLevel {
BL_64X64,
BL_32X32,
BL_16X16,
BL_8X8,
};
enum BlockPartition {
PARTITION_NONE, // [ ] <-.
PARTITION_H, // [-] |
PARTITION_V, // [|] |
PARTITION_SPLIT, // [+] --'
};
enum BlockSize {
BS_64x64,
BS_64x32,
BS_32x64,
BS_32x32,
BS_32x16,
BS_16x32,
BS_16x16,
BS_16x8,
BS_8x16,
BS_8x8,
BS_8x4,
BS_4x8,
BS_4x4,
N_BS_SIZES,
};
enum TxfmMode {
TX_4X4,
TX_8X8,
TX_16X16,
TX_32X32,
N_TXFM_SIZES,
TX_SWITCHABLE = N_TXFM_SIZES,
N_TXFM_MODES
};
enum TxfmType {
DCT_DCT,
DCT_ADST,
ADST_DCT,
ADST_ADST,
N_TXFM_TYPES
};
enum IntraPredMode {
VERT_PRED,
HOR_PRED,
DC_PRED,
DIAG_DOWN_LEFT_PRED,
DIAG_DOWN_RIGHT_PRED,
VERT_RIGHT_PRED,
HOR_DOWN_PRED,
VERT_LEFT_PRED,
HOR_UP_PRED,
TM_VP8_PRED,
LEFT_DC_PRED,
TOP_DC_PRED,
DC_128_PRED,
DC_127_PRED,
DC_129_PRED,
N_INTRA_PRED_MODES
};
enum InterPredMode {
NEARESTMV = 10,
NEARMV = 11,
ZEROMV = 12,
NEWMV = 13,
};
enum FilterMode {
FILTER_8TAP_SMOOTH,
FILTER_8TAP_REGULAR,
FILTER_8TAP_SHARP,
FILTER_BILINEAR,
FILTER_SWITCHABLE,
};
enum CompPredMode {
PRED_SINGLEREF,
PRED_COMPREF,
PRED_SWITCHABLE,
};
typedef struct VP9BitstreamHeader {
// bitstream header
uint8_t profile;
uint8_t keyframe;
uint8_t invisible;
uint8_t errorres;
uint8_t intraonly;
uint8_t resetctx;
uint8_t refreshrefmask;
uint8_t highprecisionmvs;
enum FilterMode filtermode;
uint8_t allowcompinter;
uint8_t refreshctx;
uint8_t parallelmode;
uint8_t framectxid;
uint8_t use_last_frame_mvs;
uint8_t refidx[3];
uint8_t signbias[3];
uint8_t fixcompref;
uint8_t varcompref[2];
struct {
uint8_t level;
int8_t sharpness;
} filter;
struct {
uint8_t enabled;
uint8_t updated;
int8_t mode[2];
int8_t ref[4];
} lf_delta;
uint8_t yac_qi;
int8_t ydc_qdelta, uvdc_qdelta, uvac_qdelta;
uint8_t lossless;
#define MAX_SEGMENT 8
struct {
uint8_t enabled;
uint8_t temporal;
uint8_t absolute_vals;
uint8_t update_map;
uint8_t prob[7];
uint8_t pred_prob[3];
struct {
uint8_t q_enabled;
uint8_t lf_enabled;
uint8_t ref_enabled;
uint8_t skip_enabled;
uint8_t ref_val;
int16_t q_val;
int8_t lf_val;
int16_t qmul[2][2];
uint8_t lflvl[4][2];
} feat[MAX_SEGMENT];
} segmentation;
enum TxfmMode txfmmode;
enum CompPredMode comppredmode;
struct {
unsigned log2_tile_cols, log2_tile_rows;
unsigned tile_cols, tile_rows;
} tiling;
int uncompressed_header_size;
int compressed_header_size;
} VP9BitstreamHeader;
typedef struct VP9SharedContext {
VP9BitstreamHeader h;
} VP9SharedContext;
#endif /* AVCODEC_VP9_H */
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