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[224]; 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 */ 124