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More seek support

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This commit is contained in:
Abramo Bagnara 2000-05-29 19:53:30 +00:00
parent d134c45c4e
commit da9be8d3a8
5 changed files with 72 additions and 35 deletions
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19
src/pcm/pcm.c
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@ -419,6 +419,25 @@ ssize_t snd_pcm_transfer_size(snd_pcm_t *pcm, int stream)
return str->setup.frag_size;
}
ssize_t snd_pcm_stream_seek(snd_pcm_t *pcm, int stream, off_t offset)
{
struct snd_pcm_stream *str;
size_t bytes_per_frame;
if (!pcm)
return -EFAULT;
if (stream < 0 || stream > 1)
return -EINVAL;
str = &pcm->stream[stream];
if (!str->open)
return -EBADFD;
if (!str->valid_setup)
return -EBADFD;
bytes_per_frame = str->bits_per_frame / 8;
if (bytes_per_frame > 0)
offset -= offset % bytes_per_frame;
return pcm->ops->stream_seek(pcm, stream, offset);
}
ssize_t snd_pcm_write(snd_pcm_t *pcm, const void *buffer, size_t size)
{
if (!pcm)