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rawdec: add sample_rate/channels private options.

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This commit is contained in:
Anton Khirnov 2011-05-23 20:05:55 +02:00
parent 2ea8faf39f
commit 5b3865fc5f
3 changed files with 42 additions and 6 deletions
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3
libavformat/pcmdec.c
View File

@ -50,7 +50,7 @@ static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
AVInputFormat ff_pcm_ ## name ## _demuxer = {\
#name,\
NULL_IF_CONFIG_SMALL(long_name),\
0,\
sizeof(RawAudioDemuxerContext),\
NULL,\
ff_raw_read_header,\
raw_read_packet,\
@ -59,6 +59,7 @@ AVInputFormat ff_pcm_ ## name ## _demuxer = {\
.flags= AVFMT_GENERIC_INDEX,\
.extensions = ext,\
.value = codec,\
.priv_class = &ff_rawaudio_demuxer_class,\
};
PCMDEF(f64be, "PCM 64 bit floating-point big-endian format",

36
libavformat/rawdec.c
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@ -23,6 +23,7 @@
#include "avformat.h"
#include "avio_internal.h"
#include "rawdec.h"
#include "libavutil/opt.h"
/* raw input */
int ff_raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
@ -43,15 +44,26 @@ int ff_raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
st->codec->codec_id = id;
switch(st->codec->codec_type) {
case AVMEDIA_TYPE_AUDIO:
st->codec->sample_rate = ap->sample_rate;
if(ap->channels) st->codec->channels = ap->channels;
else st->codec->channels = 1;
case AVMEDIA_TYPE_AUDIO: {
RawAudioDemuxerContext *s1 = s->priv_data;
if (ap->sample_rate)
st->codec->sample_rate = ap->sample_rate;
if (ap->channels)
st->codec->channels = ap->channels;
else st->codec->channels = 1;
if (s1->sample_rate)
st->codec->sample_rate = s1->sample_rate;
if (s1->channels)
st->codec->channels = s1->channels;
st->codec->bits_per_coded_sample = av_get_bits_per_sample(st->codec->codec_id);
assert(st->codec->bits_per_coded_sample > 0);
st->codec->block_align = st->codec->bits_per_coded_sample*st->codec->channels/8;
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
break;
}
case AVMEDIA_TYPE_VIDEO:
if(ap->time_base.num)
av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
@ -138,17 +150,31 @@ int ff_raw_video_read_header(AVFormatContext *s,
/* Note: Do not forget to add new entries to the Makefile as well. */
static const AVOption audio_options[] = {
{ "sample_rate", "", offsetof(RawAudioDemuxerContext, sample_rate), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
{ "channels", "", offsetof(RawAudioDemuxerContext, channels), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
{ NULL },
};
const AVClass ff_rawaudio_demuxer_class = {
.class_name = "rawaudio demuxer",
.item_name = av_default_item_name,
.option = audio_options,
.version = LIBAVUTIL_VERSION_INT,
};
#if CONFIG_G722_DEMUXER
AVInputFormat ff_g722_demuxer = {
"g722",
NULL_IF_CONFIG_SMALL("raw G.722"),
0,
sizeof(RawAudioDemuxerContext),
NULL,
ff_raw_read_header,
ff_raw_read_partial_packet,
.flags= AVFMT_GENERIC_INDEX,
.extensions = "g722,722",
.value = CODEC_ID_ADPCM_G722,
.priv_class = &ff_rawaudio_demuxer_class,
};
#endif

9
libavformat/rawdec.h
View File

@ -23,6 +23,15 @@
#define AVFORMAT_RAWDEC_H
#include "avformat.h"
#include "libavutil/log.h"
typedef struct RawAudioDemuxerContext {
AVClass *class;
int sample_rate;
int channels;
} RawAudioDemuxerContext;
extern const AVClass ff_rawaudio_demuxer_class;
int ff_raw_read_header(AVFormatContext *s, AVFormatParameters *ap);