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/libavformat/mkvtimestamp_v2.c

http://github.com/FFmpeg/FFmpeg
C | 50 lines | 26 code | 4 blank | 20 comment | 1 complexity | 48f5b95dc79823ba6a6db86e97ddd8c8 MD5 | raw file
 1/*
 2 * extract pts as timecode v2, as defined by mkvtoolnix
 3 * Copyright (c) 2009 David Conrad
 4 *
 5 * This file is part of FFmpeg.
 6 *
 7 * FFmpeg is free software; you can redistribute it and/or
 8 * modify it under the terms of the GNU Lesser General Public
 9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include "avformat.h"
23#include "internal.h"
24
25static int write_header(AVFormatContext *s)
26{
27    static const char *header = "# timecode format v2\n";
28    avio_write(s->pb, header, strlen(header));
29    avpriv_set_pts_info(s->streams[0], 64, 1, 1000);
30    return 0;
31}
32
33static int write_packet(AVFormatContext *s, AVPacket *pkt)
34{
35    char buf[256];
36    if (pkt->stream_index)
37        av_log(s, AV_LOG_WARNING, "More than one stream unsupported\n");
38    snprintf(buf, sizeof(buf), "%" PRId64 "\n", pkt->dts);
39    avio_write(s->pb, buf, strlen(buf));
40    return 0;
41}
42
43AVOutputFormat ff_mkvtimestamp_v2_muxer = {
44    .name         = "mkvtimestamp_v2",
45    .long_name    = NULL_IF_CONFIG_SMALL("extract pts as timecode v2 format, as defined by mkvtoolnix"),
46    .audio_codec  = AV_CODEC_ID_NONE,
47    .video_codec  = AV_CODEC_ID_RAWVIDEO,
48    .write_header = write_header,
49    .write_packet = write_packet,
50};