yading@11: /*
yading@11:  * FFM (ffserver live feed) common header
yading@11:  * Copyright (c) 2001 Fabrice Bellard
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #ifndef AVFORMAT_FFM_H
yading@11: #define AVFORMAT_FFM_H
yading@11: 
yading@11: #include <stdint.h>
yading@11: #include "avformat.h"
yading@11: #include "avio.h"
yading@11: 
yading@11: /* The FFM file is made of blocks of fixed size */
yading@11: #define FFM_HEADER_SIZE 14
yading@11: #define FFM_PACKET_SIZE 4096
yading@11: #define PACKET_ID       0x666d
yading@11: 
yading@11: /* each packet contains frames (which can span several packets */
yading@11: #define FRAME_HEADER_SIZE    16
yading@11: #define FLAG_KEY_FRAME       0x01
yading@11: #define FLAG_DTS             0x02
yading@11: 
yading@11: enum {
yading@11:     READ_HEADER,
yading@11:     READ_DATA,
yading@11: };
yading@11: 
yading@11: typedef struct FFMContext {
yading@11:     /* only reading mode */
yading@11:     int64_t write_index, file_size;
yading@11:     int read_state;
yading@11:     uint8_t header[FRAME_HEADER_SIZE+4];
yading@11: 
yading@11:     /* read and write */
yading@11:     int first_packet; /* true if first packet, needed to set the discontinuity tag */
yading@11:     int packet_size;
yading@11:     int frame_offset;
yading@11:     int64_t dts;
yading@11:     uint8_t *packet_ptr, *packet_end;
yading@11:     uint8_t packet[FFM_PACKET_SIZE];
yading@11:     int64_t start_time;
yading@11: } FFMContext;
yading@11: 
yading@11: #endif /* AVFORMAT_FFM_H */