/* * FFM (avserver live feed) common header * Copyright (c) 2001 Fabrice Bellard * * This file is part of Libav. * * Libav 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. * * Libav 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 Libav; 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]; } FFMContext; int64_t ffm_read_write_index(int fd); int ffm_write_write_index(int fd, int64_t pos); void ffm_set_write_index(AVFormatContext *s, int64_t pos, int64_t file_size); #endif /* AVFORMAT_FFM_H */