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/*
* 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 */
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