mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
2cf521718d
* commit '35c6ce76b107225a19eb33aea38857d2405882af': Canopus HQX decoder Conflicts: Changelog libavcodec/avcodec.h libavcodec/version.h tests/fate/video.mak Merged-by: Michael Niedermayer <michaelni@gmx.at>
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
/*
|
|
* Canopus HQX 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_HQX_H
|
|
#define AVCODEC_HQX_H
|
|
|
|
#include <stdint.h>
|
|
#include "libavutil/mem.h"
|
|
#include "get_bits.h"
|
|
|
|
enum HQXACMode {
|
|
HQX_AC_Q0 = 0,
|
|
HQX_AC_Q8,
|
|
HQX_AC_Q16,
|
|
HQX_AC_Q32,
|
|
HQX_AC_Q64,
|
|
HQX_AC_Q128,
|
|
NUM_HQX_AC
|
|
};
|
|
|
|
typedef struct HQXLUT {
|
|
int16_t lev;
|
|
uint8_t run;
|
|
int8_t bits;
|
|
} HQXLUT;
|
|
|
|
typedef struct HQXAC {
|
|
int lut_bits, extra_bits;
|
|
const HQXLUT *lut;
|
|
} HQXAC;
|
|
|
|
typedef struct HQXContext {
|
|
int format, dcb, width, height;
|
|
int interlaced;
|
|
|
|
DECLARE_ALIGNED(16, int16_t, block)[16][64];
|
|
|
|
VLC cbp_vlc;
|
|
VLC dc_vlc[3];
|
|
} HQXContext;
|
|
|
|
#define HQX_DC_VLC_BITS 9
|
|
|
|
extern const HQXAC ff_hqx_ac[NUM_HQX_AC];
|
|
|
|
int ff_hqx_init_vlcs(HQXContext *ctx);
|
|
|
|
#endif /* AVCODEC_HQX_H */
|