| /* |
| * 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]; |
| } 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 */ |