aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* RTJpeg decoding functions
* copyright (c) 2006 Reimar Doeffinger
*
* 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_RTJPEG_H
#define AVCODEC_RTJPEG_H
#include <stdint.h>
#include "libavutil/mem.h"
#include "idctdsp.h"
#define RTJPEG_FILE_VERSION 0
#define RTJPEG_HEADER_SIZE 12
typedef struct RTJpegContext {
int w, h;
IDCTDSPContext idsp;
uint8_t scan[64];
uint32_t lquant[64];
uint32_t cquant[64];
DECLARE_ALIGNED(16, int16_t, block)[64];
} RTJpegContext;
void ff_rtjpeg_init(RTJpegContext *c, AVCodecContext *avctx);
void ff_rtjpeg_decode_init(RTJpegContext *c, int width, int height,
const uint32_t *lquant, const uint32_t *cquant);
int ff_rtjpeg_decode_frame_yuv420(RTJpegContext *c, AVFrame *f,
const uint8_t *buf, int buf_size);
#endif /* AVCODEC_RTJPEG_H */
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