aboutsummaryrefslogtreecommitdiffstats
path: root/libavcodec/mjpegenc.h
blob: ad2a55425e9a2539ab2e4510757dc43509ef1abe (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
/*
 * MJPEG encoder
 * Copyright (c) 2000, 2001 Fabrice Bellard
 * Copyright (c) 2003 Alex Beregszaszi
 * Copyright (c) 2003-2004 Michael Niedermayer
 *
 * Support for external huffman table, various fixes (AVID workaround),
 * aspecting, new decode_frame mechanism and apple mjpeg-b support
 *                                  by Alex Beregszaszi
 *
 * 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
 */

/**
 * @file
 * MJPEG encoder.
 */

#ifndef AVCODEC_MJPEGENC_H
#define AVCODEC_MJPEGENC_H

#include <stdint.h>

#include "mpegvideo.h"
#include "put_bits.h"

typedef struct MJpegContext {
    uint8_t huff_size_dc_luminance[12]; //FIXME use array [3] instead of lumi / chrom, for easier addressing
    uint16_t huff_code_dc_luminance[12];
    uint8_t huff_size_dc_chrominance[12];
    uint16_t huff_code_dc_chrominance[12];

    uint8_t huff_size_ac_luminance[256];
    uint16_t huff_code_ac_luminance[256];
    uint8_t huff_size_ac_chrominance[256];
    uint16_t huff_code_ac_chrominance[256];
} MJpegContext;

static inline void put_marker(PutBitContext *p, int code)
{
    put_bits(p, 8, 0xff);
    put_bits(p, 8, code);
}

int  ff_mjpeg_encode_init(MpegEncContext *s);
void ff_mjpeg_encode_close(MpegEncContext *s);
void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[12][64]);

#endif /* AVCODEC_MJPEGENC_H */