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move pcm demuxers to their own file

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Originally committed as revision 24993 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs
2010-08-30 21:17:34 +00:00
parent 79ce0f002e
commit e94204dfd8
15 changed files with 251 additions and 121 deletions
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82
libavformat/raw.c
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@@ -36,7 +36,7 @@ int ff_raw_write_packet(AVFormatContext *s, AVPacket *pkt)
#if CONFIG_DEMUXERS
/* raw input */
static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
int ff_raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
AVStream *st;
enum CodecID id;
@@ -81,28 +81,6 @@ static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
}
#define RAW_PACKET_SIZE 1024
#define RAW_SAMPLES 1024
static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
{
int ret, size, bps;
// AVStream *st = s->streams[0];
size= RAW_SAMPLES*s->streams[0]->codec->block_align;
ret= av_get_packet(s->pb, pkt, size);
pkt->stream_index = 0;
if (ret < 0)
return ret;
bps= av_get_bits_per_sample(s->streams[0]->codec->codec_id);
assert(bps); // if false there IS a bug elsewhere (NOT in this function)
pkt->dts=
pkt->pts= pkt->pos*8 / (bps * s->streams[0]->codec->channels);
return ret;
}
int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
{
@@ -150,38 +128,6 @@ static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
#endif
#if CONFIG_DEMUXERS
int pcm_read_seek(AVFormatContext *s,
int stream_index, int64_t timestamp, int flags)
{
AVStream *st;
int block_align, byte_rate;
int64_t pos, ret;
st = s->streams[0];
block_align = st->codec->block_align ? st->codec->block_align :
(av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
byte_rate = st->codec->bit_rate ? st->codec->bit_rate >> 3 :
block_align * st->codec->sample_rate;
if (block_align <= 0 || byte_rate <= 0)
return -1;
if (timestamp < 0) timestamp = 0;
/* compute the position by aligning it to block_align */
pos = av_rescale_rnd(timestamp * byte_rate,
st->time_base.num,
st->time_base.den * (int64_t)block_align,
(flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP);
pos *= block_align;
/* recompute exact position */
st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num);
if ((ret = url_fseek(s->pb, pos + s->data_offset, SEEK_SET)) < 0)
return ret;
return 0;
}
int ff_raw_audio_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
@@ -529,7 +475,7 @@ AVInputFormat rawvideo_demuxer = {
NULL_IF_CONFIG_SMALL("raw video format"),
0,
NULL,
raw_read_header,
ff_raw_read_header,
rawvideo_read_packet,
.flags= AVFMT_GENERIC_INDEX,
.extensions = "yuv,cif,qcif,rgb",
@@ -581,21 +527,6 @@ AVInputFormat vc1_demuxer = {
/* PCM formats */
#define PCMINPUTDEF(name, long_name, ext, codec) \
AVInputFormat pcm_ ## name ## _demuxer = {\
#name,\
NULL_IF_CONFIG_SMALL(long_name),\
0,\
NULL,\
raw_read_header,\
raw_read_packet,\
NULL,\
pcm_read_seek,\
.flags= AVFMT_GENERIC_INDEX,\
.extensions = ext,\
.value = codec,\
};
#define PCMOUTPUTDEF(name, long_name, ext, codec) \
AVOutputFormat pcm_ ## name ## _muxer = {\
#name,\
@@ -611,15 +542,8 @@ AVOutputFormat pcm_ ## name ## _muxer = {\
};
#if !CONFIG_MUXERS && CONFIG_DEMUXERS
#if CONFIG_MUXERS
#define PCMDEF(name, long_name, ext, codec) \
PCMINPUTDEF(name, long_name, ext, codec)
#elif CONFIG_MUXERS && !CONFIG_DEMUXERS
#define PCMDEF(name, long_name, ext, codec) \
PCMOUTPUTDEF(name, long_name, ext, codec)
#elif CONFIG_MUXERS && CONFIG_DEMUXERS
#define PCMDEF(name, long_name, ext, codec) \
PCMINPUTDEF(name, long_name, ext, codec)\
PCMOUTPUTDEF(name, long_name, ext, codec)
#else
#define PCMDEF(name, long_name, ext, codec)