diff options
Diffstat (limited to 'libavformat/g722.c')
-rw-r--r-- | libavformat/g722.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/libavformat/g722.c b/libavformat/g722.c new file mode 100644 index 0000000000..1a87c7d28c --- /dev/null +++ b/libavformat/g722.c @@ -0,0 +1,57 @@ +/* + * g722 raw demuxer + * Copyright (c) 2010 Martin Storsjo + * + * 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 + */ + +#include "libavutil/avassert.h" +#include "avformat.h" +#include "internal.h" +#include "rawdec.h" + +static int g722_read_header(AVFormatContext *s) +{ + AVStream *st; + + st = avformat_new_stream(s, NULL); + if (!st) + return AVERROR(ENOMEM); + + st->codec->codec_type = AVMEDIA_TYPE_AUDIO; + st->codec->codec_id = AV_CODEC_ID_ADPCM_G722; + st->codec->sample_rate = 16000; + st->codec->channels = 1; + + st->codec->bits_per_coded_sample = + av_get_bits_per_sample(st->codec->codec_id); + + av_assert0(st->codec->bits_per_coded_sample > 0); + + avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate); + return 0; +} + +AVInputFormat ff_g722_demuxer = { + .name = "g722", + .long_name = NULL_IF_CONFIG_SMALL("raw G.722"), + .read_header = g722_read_header, + .read_packet = ff_raw_read_partial_packet, + .flags = AVFMT_GENERIC_INDEX, + .extensions = "g722,722", + .raw_codec_id = AV_CODEC_ID_ADPCM_G722, +}; |