aboutsummaryrefslogtreecommitdiffstats
path: root/libavcodec/cbs_jpeg.h
blob: 913d3f90f6f828433cbff9f9c51d617269c71dcb (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
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
/*
 * 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_CBS_JPEG_H
#define AVCODEC_CBS_JPEG_H

#include <stddef.h>
#include <stdint.h>

#include "libavutil/buffer.h"


enum {
    JPEG_MARKER_SOF0    = 0xc0,
    JPEG_MARKER_SOF1    = 0xc1,
    JPEG_MARKER_SOF2    = 0xc2,
    JPEG_MARKER_SOF3    = 0xc3,

    JPEG_MARKER_DHT     = 0xc4,
    JPEG_MARKER_SOI     = 0xd8,
    JPEG_MARKER_EOI     = 0xd9,
    JPEG_MARKER_SOS     = 0xda,
    JPEG_MARKER_DQT     = 0xdb,

    JPEG_MARKER_APPN    = 0xe0,
    JPEG_MARKER_JPGN    = 0xf0,
    JPEG_MARKER_COM     = 0xfe,
};

enum {
    JPEG_MAX_COMPONENTS = 255,

    JPEG_MAX_HEIGHT = 65535,
    JPEG_MAX_WIDTH  = 65535,
};


typedef struct JPEGRawFrameHeader {
    uint16_t Lf;
    uint8_t  P;
    uint16_t Y;
    uint16_t X;
    uint16_t Nf;

    uint8_t  C [JPEG_MAX_COMPONENTS];
    uint8_t  H [JPEG_MAX_COMPONENTS];
    uint8_t  V [JPEG_MAX_COMPONENTS];
    uint8_t  Tq[JPEG_MAX_COMPONENTS];
} JPEGRawFrameHeader;

typedef struct JPEGRawScanHeader {
    uint16_t Ls;
    uint8_t  Ns;

    uint8_t  Cs[JPEG_MAX_COMPONENTS];
    uint8_t  Td[JPEG_MAX_COMPONENTS];
    uint8_t  Ta[JPEG_MAX_COMPONENTS];

    uint8_t  Ss;
    uint8_t  Se;
    uint8_t  Ah;
    uint8_t  Al;
} JPEGRawScanHeader;

typedef struct JPEGRawScan {
    JPEGRawScanHeader header;
    uint8_t          *data;
    size_t            data_size;
    AVBufferRef      *data_ref;
} JPEGRawScan;

typedef struct JPEGRawQuantisationTable {
    uint8_t  Pq;
    uint8_t  Tq;
    uint16_t Q[64];
} JPEGRawQuantisationTable;

typedef struct JPEGRawQuantisationTableSpecification {
    uint16_t Lq;
    JPEGRawQuantisationTable table[4];
} JPEGRawQuantisationTableSpecification;

typedef struct JPEGRawHuffmanTable {
    uint8_t  Tc;
    uint8_t  Th;
    uint8_t  L[16];
    uint8_t  V[224];
} JPEGRawHuffmanTable;

typedef struct JPEGRawHuffmanTableSpecification {
    uint16_t Lh;
    JPEGRawHuffmanTable table[8];
} JPEGRawHuffmanTableSpecification;

typedef struct JPEGRawApplicationData {
    uint16_t     Lp;
    uint8_t     *Ap;
    AVBufferRef *Ap_ref;
} JPEGRawApplicationData;

typedef struct JPEGRawComment {
    uint16_t     Lc;
    uint8_t     *Cm;
    AVBufferRef *Cm_ref;
} JPEGRawComment;


typedef struct CodedBitstreamJPEGContext {
    // Write buffer.
    uint8_t *write_buffer;
    size_t write_buffer_size;
} CodedBitstreamJPEGContext;


#endif /* AVCODEC_CBS_JPEG_H */