• Main Page
  • Related Pages
  • Modules
  • Data Structures
  • Files
  • File List
  • Globals

libavformat/ffm.h

Go to the documentation of this file.
00001 /*
00002  * FFM (ffserver live feed) common header
00003  * Copyright (c) 2001 Fabrice Bellard
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 #ifndef AVFORMAT_FFM_H
00023 #define AVFORMAT_FFM_H
00024 
00025 #include <stdint.h>
00026 #include "avformat.h"
00027 #include "avio.h"
00028 
00029 /* The FFM file is made of blocks of fixed size */
00030 #define FFM_HEADER_SIZE 14
00031 #define PACKET_ID       0x666d
00032 
00033 /* each packet contains frames (which can span several packets */
00034 #define FRAME_HEADER_SIZE    16
00035 #define FLAG_KEY_FRAME       0x01
00036 #define FLAG_DTS             0x02
00037 
00038 enum {
00039     READ_HEADER,
00040     READ_DATA,
00041 };
00042 
00043 typedef struct FFMContext {
00044     /* only reading mode */
00045     int64_t write_index, file_size;
00046     int read_state;
00047     uint8_t header[FRAME_HEADER_SIZE+4];
00048 
00049     /* read and write */
00050     int first_packet; /* true if first packet, needed to set the discontinuity tag */
00051     int packet_size;
00052     int frame_offset;
00053     int64_t dts;
00054     uint8_t *packet_ptr, *packet_end;
00055     uint8_t packet[FFM_PACKET_SIZE];
00056 } FFMContext;
00057 
00058 #endif /* AVFORMAT_FFM_H */

Generated on Fri Sep 16 2011 17:17:48 for FFmpeg by  doxygen 1.7.1