mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
2.2 KiB
63 lines
2.2 KiB
/* |
|
* 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 |
|
*/ |
|
|
|
/** |
|
* @file |
|
* H.264 decoder/parser shared code |
|
*/ |
|
|
|
#ifndef AVCODEC_H264_PARSE_H |
|
#define AVCODEC_H264_PARSE_H |
|
|
|
#include "get_bits.h" |
|
|
|
typedef struct H264PredWeightTable { |
|
int use_weight; |
|
int use_weight_chroma; |
|
int luma_log2_weight_denom; |
|
int chroma_log2_weight_denom; |
|
int luma_weight_flag[2]; ///< 7.4.3.2 luma_weight_lX_flag |
|
int chroma_weight_flag[2]; ///< 7.4.3.2 chroma_weight_lX_flag |
|
// The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss |
|
int luma_weight[48][2][2]; |
|
int chroma_weight[48][2][2][2]; |
|
int implicit_weight[48][48][2]; |
|
} H264PredWeightTable; |
|
|
|
struct SPS; |
|
|
|
int ff_h264_pred_weight_table(GetBitContext *gb, const struct SPS *sps, |
|
const int *ref_count, int slice_type_nos, |
|
H264PredWeightTable *pwt); |
|
|
|
/** |
|
* Check if the top & left blocks are available if needed & change the |
|
* dc mode so it only uses the available blocks. |
|
*/ |
|
int ff_h264_check_intra4x4_pred_mode(int8_t *pred_mode_cache, void *logctx, |
|
int top_samples_available, int left_samples_available); |
|
|
|
/** |
|
* Check if the top & left blocks are available if needed & change the |
|
* dc mode so it only uses the available blocks. |
|
*/ |
|
int ff_h264_check_intra_pred_mode(void *logctx, int top_samples_available, |
|
int left_samples_available, |
|
int mode, int is_chroma); |
|
|
|
#endif /* AVCODEC_H264_PARSE_H */
|
|
|