libavcodec/cbs_jpeg.h

   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
  28 enum {
  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
  45 enum {
  46     JPEG_MAX_COMPONENTS = 255,
  47
  48     JPEG_MAX_HEIGHT = 65535,
  49     JPEG_MAX_WIDTH  = 65535,
  50 };
  51
  52
  53 typedef 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
  66 typedef 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
  80 typedef struct JPEGRawScan {
  81     JPEGRawScanHeader header;
  82     uint8_t          *data;
  83     AVBufferRef      *data_ref;
  84     size_t            data_size;
  85 } JPEGRawScan;
  86
  87 typedef struct JPEGRawQuantisationTable {
  88     uint8_t  Pq;
  89     uint8_t  Tq;
  90     uint16_t Q[64];
  91 } JPEGRawQuantisationTable;
  92
  93 typedef struct JPEGRawQuantisationTableSpecification {
  94     uint16_t Lq;
  95     JPEGRawQuantisationTable table[4];
  96 } JPEGRawQuantisationTableSpecification;
  97
  98 typedef struct JPEGRawHuffmanTable {
  99     uint8_t  Tc;
 100     uint8_t  Th;
 101     uint8_t  L[16];
 102     uint8_t  V[256];
 103 } JPEGRawHuffmanTable;
 104
 105 typedef struct JPEGRawHuffmanTableSpecification {
 106     uint16_t Lh;
 107     JPEGRawHuffmanTable table[8];
 108 } JPEGRawHuffmanTableSpecification;
 109
 110 typedef struct JPEGRawApplicationData {
 111     uint16_t     Lp;
 112     uint8_t     *Ap;
 113     AVBufferRef *Ap_ref;
 114 } JPEGRawApplicationData;
 115
 116 typedef struct JPEGRawComment {
 117     uint16_t     Lc;
 118     uint8_t     *Cm;
 119     AVBufferRef *Cm_ref;
 120 } JPEGRawComment;
 121
 122
 123 #endif /* AVCODEC_CBS_JPEG_H */