/*
  * FFM (ffserver live feed) common header

  * Copyright (c) 2001 Fabrice Bellard

  *
  * 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 AVFORMAT_FFM_H
 #define AVFORMAT_FFM_H

 #include <stdint.h>

 #include "avformat.h"

 #include "avio.h"

 
 /* The FFM file is made of blocks of fixed size */
 #define FFM_HEADER_SIZE 14

 #define FFM_PACKET_SIZE 4096

 #define PACKET_ID       0x666d
 
 /* each packet contains frames (which can span several packets */

 #define FRAME_HEADER_SIZE    16

 #define FLAG_KEY_FRAME       0x01

 #define FLAG_DTS             0x02

 
 enum {
     READ_HEADER,
     READ_DATA,
 };
 
 typedef struct FFMContext {
     /* only reading mode */

     int64_t write_index, file_size;

     int read_state;

     uint8_t header[FRAME_HEADER_SIZE+4];

 
     /* read and write */
     int first_packet; /* true if first packet, needed to set the discontinuity tag */
     int packet_size;
     int frame_offset;

     int64_t dts;

     uint8_t *packet_ptr, *packet_end;
     uint8_t packet[FFM_PACKET_SIZE];

     int64_t start_time;

 } FFMContext;
 

 #endif /* AVFORMAT_FFM_H */