1/*
2 * FFM (ffserver live feed) common header
3 * Copyright (c) 2001 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#ifndef AVFORMAT_FFM_H
23#define AVFORMAT_FFM_H
24
25#include <stdint.h>
26#include "avformat.h"
27#include "avio.h"
28
29/* The FFM file is made of blocks of fixed size */
30#define FFM_HEADER_SIZE 14
31#define PACKET_ID       0x666d
32
33/* each packet contains frames (which can span several packets */
34#define FRAME_HEADER_SIZE    16
35#define FLAG_KEY_FRAME       0x01
36#define FLAG_DTS             0x02
37
38enum {
39    READ_HEADER,
40    READ_DATA,
41};
42
43typedef struct FFMContext {
44    /* only reading mode */
45    int64_t write_index, file_size;
46    int read_state;
47    uint8_t header[FRAME_HEADER_SIZE+4];
48
49    /* read and write */
50    int first_packet; /* true if first packet, needed to set the discontinuity tag */
51    int packet_size;
52    int frame_offset;
53    int64_t dts;
54    uint8_t *packet_ptr, *packet_end;
55    uint8_t packet[FFM_PACKET_SIZE];
56} FFMContext;
57
58#endif /* AVFORMAT_FFM_H */
59