mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/*
|
|
* Canopus HQ/HQA decoder
|
|
*
|
|
* 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_HQ_HQA_H
|
|
#define AVCODEC_HQ_HQA_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "libavutil/mem_internal.h"
|
|
|
|
#include "avcodec.h"
|
|
#include "bytestream.h"
|
|
#include "hq_hqadsp.h"
|
|
#include "vlc.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 */
|