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.
60 lines
1.6 KiB
60 lines
1.6 KiB
/* |
|
* Canopus HQ/HQA decoder |
|
* |
|
* This file is part of Libav. |
|
* |
|
* Libav 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. |
|
* |
|
* Libav 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 Libav; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#ifndef AVCODEC_HQ_HQA_H |
|
#define AVCODEC_HQ_HQA_H |
|
|
|
#include <stdint.h> |
|
|
|
#include "avcodec.h" |
|
#include "get_bits.h" |
|
#include "bytestream.h" |
|
#include "hq_hqadsp.h" |
|
|
|
#define NUM_HQ_AC_ENTRIES 746 |
|
#define NUM_HQ_PROFILES 22 |
|
#define NUM_HQ_QUANTS 16 |
|
|
|
typedef struct HQContext { |
|
AVCodecContext *avctx; |
|
HQDSPContext hqhqadsp; |
|
GetByteContext gbc; |
|
|
|
VLC hq_ac_vlc; |
|
VLC hqa_cbp_vlc; |
|
DECLARE_ALIGNED(16, int16_t, block)[12][64]; |
|
} HQContext; |
|
|
|
typedef struct HQProfile { |
|
const uint8_t *perm_tab; |
|
int width, height; |
|
int num_slices; |
|
int tab_w, tab_h; |
|
} HQProfile; |
|
|
|
extern const int32_t * const ff_hq_quants[16][2][4]; |
|
extern const HQProfile ff_hq_profile[NUM_HQ_PROFILES]; |
|
|
|
extern const uint8_t ff_hq_ac_skips[NUM_HQ_AC_ENTRIES]; |
|
extern const int16_t ff_hq_ac_syms [NUM_HQ_AC_ENTRIES]; |
|
|
|
int ff_hq_init_vlcs(HQContext *c); |
|
|
|
#endif /* AVCODEC_HQ_HQA_H */
|
|
|