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Reverted back the previous read/write_areas code

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This commit is contained in:
Jaroslav Kysela 2001-05-14 15:21:18 +00:00
parent 808fb82d1f
commit 00c749f080
1 changed files with 14 additions and 30 deletions
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44
src/pcm/pcm_mmap.c
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@ -86,27 +86,19 @@ static snd_pcm_uframes_t snd_pcm_mmap_write_areas(snd_pcm_t *pcm,
snd_pcm_uframes_t size)
{
snd_pcm_uframes_t xfer = size;
int res;
assert(snd_pcm_mmap_playback_avail(pcm) >= size);
while (size > 0) {
const snd_pcm_channel_area_t *pcm_areas;
snd_pcm_uframes_t pcm_offset;
snd_pcm_uframes_t frames = size;
snd_pcm_mmap_begin(pcm, &pcm_areas, &pcm_offset, &frames);
if (frames > 0)
snd_pcm_areas_copy(pcm_areas, pcm_offset,
areas, offset,
pcm->channels,
frames, pcm->format);
snd_pcm_areas_copy(pcm_areas, pcm_offset,
areas, offset,
pcm->channels,
frames, pcm->format);
snd_pcm_mmap_commit(pcm, pcm_offset, frames);
if (frames == 0) {
if (pcm->mode & SND_PCM_NONBLOCK)
return xfer;
if ((res = snd_pcm_wait(pcm, -1)) < 0)
return xfer > 0 ? xfer : res;
} else {
offset += frames;
size -= frames;
}
offset += frames;
size -= frames;
}
return xfer;
}
@ -117,27 +109,19 @@ static snd_pcm_uframes_t snd_pcm_mmap_read_areas(snd_pcm_t *pcm,
snd_pcm_uframes_t size)
{
snd_pcm_uframes_t xfer = size;
int res;
assert(snd_pcm_mmap_capture_avail(pcm) >= size);
while (size > 0) {
const snd_pcm_channel_area_t *pcm_areas;
snd_pcm_uframes_t pcm_offset;
snd_pcm_uframes_t frames = size;
snd_pcm_mmap_begin(pcm, &pcm_areas, &pcm_offset, &frames);
if (frames > 0)
snd_pcm_areas_copy(areas, offset,
pcm_areas, pcm_offset,
pcm->channels,
frames, pcm->format);
snd_pcm_areas_copy(areas, offset,
pcm_areas, pcm_offset,
pcm->channels,
frames, pcm->format);
snd_pcm_mmap_commit(pcm, pcm_offset, frames);
if (frames == 0) {
if (pcm->mode & SND_PCM_NONBLOCK)
return xfer;
if ((res = snd_pcm_wait(pcm, -1)) < 0)
return xfer > 0 ? xfer : res;
} else {
offset += frames;
size -= frames;
}
offset += frames;
size -= frames;
}
return xfer;
}