xref: /third_party/ffmpeg/libavcodec/cbs_jpeg.h (revision cabdff1a) 
1/*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19#ifndef AVCODEC_CBS_JPEG_H
20#define AVCODEC_CBS_JPEG_H
21
22#include <stddef.h>
23#include <stdint.h>
24
25#include "libavutil/buffer.h"
26
27
28enum {
29    JPEG_MARKER_SOF0    = 0xc0,
30    JPEG_MARKER_SOF1    = 0xc1,
31    JPEG_MARKER_SOF2    = 0xc2,
32    JPEG_MARKER_SOF3    = 0xc3,
33
34    JPEG_MARKER_DHT     = 0xc4,
35    JPEG_MARKER_SOI     = 0xd8,
36    JPEG_MARKER_EOI     = 0xd9,
37    JPEG_MARKER_SOS     = 0xda,
38    JPEG_MARKER_DQT     = 0xdb,
39
40    JPEG_MARKER_APPN    = 0xe0,
41    JPEG_MARKER_JPGN    = 0xf0,
42    JPEG_MARKER_COM     = 0xfe,
43};
44
45enum {
46    JPEG_MAX_COMPONENTS = 255,
47
48    JPEG_MAX_HEIGHT = 65535,
49    JPEG_MAX_WIDTH  = 65535,
50};
51
52
53typedef struct JPEGRawFrameHeader {
54    uint16_t Lf;
55    uint8_t  P;
56    uint16_t Y;
57    uint16_t X;
58    uint16_t Nf;
59
60    uint8_t  C [JPEG_MAX_COMPONENTS];
61    uint8_t  H [JPEG_MAX_COMPONENTS];
62    uint8_t  V [JPEG_MAX_COMPONENTS];
63    uint8_t  Tq[JPEG_MAX_COMPONENTS];
64} JPEGRawFrameHeader;
65
66typedef struct JPEGRawScanHeader {
67    uint16_t Ls;
68    uint8_t  Ns;
69
70    uint8_t  Cs[JPEG_MAX_COMPONENTS];
71    uint8_t  Td[JPEG_MAX_COMPONENTS];
72    uint8_t  Ta[JPEG_MAX_COMPONENTS];
73
74    uint8_t  Ss;
75    uint8_t  Se;
76    uint8_t  Ah;
77    uint8_t  Al;
78} JPEGRawScanHeader;
79
80typedef struct JPEGRawScan {
81    JPEGRawScanHeader header;
82    uint8_t          *data;
83    AVBufferRef      *data_ref;
84    size_t            data_size;
85} JPEGRawScan;
86
87typedef struct JPEGRawQuantisationTable {
88    uint8_t  Pq;
89    uint8_t  Tq;
90    uint16_t Q[64];
91} JPEGRawQuantisationTable;
92
93typedef struct JPEGRawQuantisationTableSpecification {
94    uint16_t Lq;
95    JPEGRawQuantisationTable table[4];
96} JPEGRawQuantisationTableSpecification;
97
98typedef struct JPEGRawHuffmanTable {
99    uint8_t  Tc;
100    uint8_t  Th;
101    uint8_t  L[16];
102    uint8_t  V[256];
103} JPEGRawHuffmanTable;
104
105typedef struct JPEGRawHuffmanTableSpecification {
106    uint16_t Lh;
107    JPEGRawHuffmanTable table[8];
108} JPEGRawHuffmanTableSpecification;
109
110typedef struct JPEGRawApplicationData {
111    uint16_t     Lp;
112    uint8_t     *Ap;
113    AVBufferRef *Ap_ref;
114} JPEGRawApplicationData;
115
116typedef struct JPEGRawComment {
117    uint16_t     Lc;
118    uint8_t     *Cm;
119    AVBufferRef *Cm_ref;
120} JPEGRawComment;
121
122
123#endif /* AVCODEC_CBS_JPEG_H */
124