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