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rtjpeg.h
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1 /*
2  * RTJpeg decoding functions
3  * copyright (c) 2006 Reimar Doeffinger
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #ifndef AVCODEC_RTJPEG_H
23 #define AVCODEC_RTJPEG_H
24 
25 #include <stdint.h>
26 
27 #include "libavutil/mem.h"
28 #include "idctdsp.h"
29 
30 #define RTJPEG_FILE_VERSION 0
31 #define RTJPEG_HEADER_SIZE 12
32 
33 typedef struct RTJpegContext {
34  int w, h;
37  uint32_t lquant[64];
38  uint32_t cquant[64];
39  DECLARE_ALIGNED(16, int16_t, block)[64];
41 
43 
45  const uint32_t *lquant, const uint32_t *cquant);
46 
48  const uint8_t *buf, int buf_size);
49 #endif /* AVCODEC_RTJPEG_H */
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
Memory handling functions.
uint32_t cquant[64]
Definition: rtjpeg.h:38
void ff_rtjpeg_init(RTJpegContext *c, AVCodecContext *avctx)
Definition: rtjpeg.c:170
uint8_t
int16_t block[64]
Definition: rtjpeg.h:39
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:101
#define height
int ff_rtjpeg_decode_frame_yuv420(RTJpegContext *c, AVFrame *f, const uint8_t *buf, int buf_size)
decode one rtjpeg YUV420 frame
Definition: rtjpeg.c:106
#define width
IDCTDSPContext idsp
Definition: rtjpeg.h:35
uint8_t scan[64]
Definition: rtjpeg.h:36
uint32_t lquant[64]
Definition: rtjpeg.h:37
main external API structure.
Definition: avcodec.h:1675
void * buf
Definition: avisynth_c.h:690
static double c[64]
void ff_rtjpeg_decode_init(RTJpegContext *c, int width, int height, const uint32_t *lquant, const uint32_t *cquant)
initialize an RTJpegContext, may be called multiple times
Definition: rtjpeg.c:158