1fe77d4a63
Having these together allows us to find both pointers given the address of only one of them.
124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_CBS_JPEG_H
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#define AVCODEC_CBS_JPEG_H
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#include <stddef.h>
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#include <stdint.h>
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#include "libavutil/buffer.h"
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enum {
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JPEG_MARKER_SOF0 = 0xc0,
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JPEG_MARKER_SOF1 = 0xc1,
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JPEG_MARKER_SOF2 = 0xc2,
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JPEG_MARKER_SOF3 = 0xc3,
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JPEG_MARKER_DHT = 0xc4,
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JPEG_MARKER_SOI = 0xd8,
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JPEG_MARKER_EOI = 0xd9,
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JPEG_MARKER_SOS = 0xda,
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JPEG_MARKER_DQT = 0xdb,
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JPEG_MARKER_APPN = 0xe0,
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JPEG_MARKER_JPGN = 0xf0,
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JPEG_MARKER_COM = 0xfe,
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};
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enum {
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JPEG_MAX_COMPONENTS = 255,
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JPEG_MAX_HEIGHT = 65535,
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JPEG_MAX_WIDTH = 65535,
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};
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typedef struct JPEGRawFrameHeader {
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uint16_t Lf;
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uint8_t P;
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uint16_t Y;
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uint16_t X;
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uint16_t Nf;
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uint8_t C [JPEG_MAX_COMPONENTS];
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uint8_t H [JPEG_MAX_COMPONENTS];
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uint8_t V [JPEG_MAX_COMPONENTS];
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uint8_t Tq[JPEG_MAX_COMPONENTS];
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} JPEGRawFrameHeader;
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typedef struct JPEGRawScanHeader {
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uint16_t Ls;
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uint8_t Ns;
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uint8_t Cs[JPEG_MAX_COMPONENTS];
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uint8_t Td[JPEG_MAX_COMPONENTS];
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uint8_t Ta[JPEG_MAX_COMPONENTS];
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uint8_t Ss;
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uint8_t Se;
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uint8_t Ah;
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uint8_t Al;
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} JPEGRawScanHeader;
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typedef struct JPEGRawScan {
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JPEGRawScanHeader header;
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uint8_t *data;
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AVBufferRef *data_ref;
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size_t data_size;
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} JPEGRawScan;
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typedef struct JPEGRawQuantisationTable {
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uint8_t Pq;
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uint8_t Tq;
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uint16_t Q[64];
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} JPEGRawQuantisationTable;
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typedef struct JPEGRawQuantisationTableSpecification {
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uint16_t Lq;
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JPEGRawQuantisationTable table[4];
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} JPEGRawQuantisationTableSpecification;
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typedef struct JPEGRawHuffmanTable {
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uint8_t Tc;
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uint8_t Th;
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uint8_t L[16];
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uint8_t V[224];
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} JPEGRawHuffmanTable;
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typedef struct JPEGRawHuffmanTableSpecification {
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uint16_t Lh;
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JPEGRawHuffmanTable table[8];
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} JPEGRawHuffmanTableSpecification;
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typedef struct JPEGRawApplicationData {
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uint16_t Lp;
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uint8_t *Ap;
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AVBufferRef *Ap_ref;
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} JPEGRawApplicationData;
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typedef struct JPEGRawComment {
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uint16_t Lc;
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uint8_t *Cm;
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AVBufferRef *Cm_ref;
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} JPEGRawComment;
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#endif /* AVCODEC_CBS_JPEG_H */
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