3 * Copyright (c) 2012 Paul B Mahol
5 * This file is part of FFmpeg.
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.
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.
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
26 static int pvf_probe(AVProbeData *p)
28 if (!memcmp(p->buf, "PVF1\n", 5))
29 return AVPROBE_SCORE_MAX;
33 static int pvf_read_header(AVFormatContext *s)
37 int bps, channels, sample_rate;
40 ff_get_line(s->pb, (char *)&buffer, 32);
41 if (sscanf(buffer, "%d %d %d",
45 return AVERROR_INVALIDDATA;
47 if (channels <= 0 || bps <= 0 || sample_rate <= 0)
48 return AVERROR_INVALIDDATA;
50 st = avformat_new_stream(s, NULL);
52 return AVERROR(ENOMEM);
54 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
55 st->codec->channels = channels;
56 st->codec->sample_rate = sample_rate;
57 st->codec->codec_id = ff_get_pcm_codec_id(bps, 0, 1, 0xFFFF);
58 st->codec->bits_per_coded_sample = bps;
59 st->codec->block_align = bps * st->codec->channels / 8;
61 avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
66 AVInputFormat ff_pvf_demuxer = {
68 .long_name = NULL_IF_CONFIG_SMALL("PVF (Portable Voice Format)"),
69 .read_probe = pvf_probe,
70 .read_header = pvf_read_header,
71 .read_packet = ff_pcm_read_packet,
72 .read_seek = ff_pcm_read_seek,
74 .flags = AVFMT_GENERIC_INDEX,