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Moved some info fields to proper place (setup). Renamed mmap_size to mmap_bytes. Added detailed fail report to params_t. Added params_info to API.

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This commit is contained in:
Abramo Bagnara 2000-07-01 10:38:29 +00:00
parent 875aed990f
commit cc79e0c6ea
8 changed files with 271 additions and 109 deletions
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45
src/pcm/pcm_multi.c
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@ -90,29 +90,40 @@ static int snd_pcm_multi_nonblock(void *private, int nonblock)
static int snd_pcm_multi_info(void *private, snd_pcm_info_t *info)
{
snd_pcm_multi_t *multi = (snd_pcm_multi_t*) private;
unsigned int i, channels;
unsigned int i;
int err;
snd_pcm_t *handle_0 = multi->slaves[0].handle;
unsigned int channels0 = multi->slaves[0].channels_total;
err = snd_pcm_info(handle_0, info);
if (err < 0)
return err;
info->buffer_size /= channels0;
info->min_fragment_size /= channels0;
info->max_fragment_size /= channels0;
info->fragment_align /= channels0;
for (i = 1; i < multi->slaves_count; ++i) {
snd_pcm_t *handle_i = multi->slaves[i].handle;
snd_pcm_info_t info_i;
err = snd_pcm_info(handle_i, &info_i);
if (err < 0)
return err;
channels0 = multi->slaves[i].channels_total;
info_i.buffer_size /= channels0;
info_i.min_fragment_size /= channels0;
info_i.max_fragment_size /= channels0;
info_i.fragment_align /= channels0;
info->flags &= info_i.flags;
}
if (multi->one_to_many)
info->flags &= ~(SND_PCM_INFO_MMAP | SND_PCM_INFO_MMAP_VALID);
return 0;
}
static int snd_pcm_multi_params_info(void *private, snd_pcm_params_info_t *info)
{
snd_pcm_multi_t *multi = (snd_pcm_multi_t*) private;
unsigned int i;
int err;
snd_pcm_t *handle_0 = multi->slaves[0].handle;
err = snd_pcm_params_info(handle_0, info);
if (err < 0)
return err;
for (i = 1; i < multi->slaves_count; ++i) {
snd_pcm_t *handle_i = multi->slaves[i].handle;
snd_pcm_params_info_t info_i;
err = snd_pcm_params_info(handle_i, &info_i);
if (err < 0)
return err;
info->formats &= info_i.formats;
info->rates &= info_i.rates;
if (info_i.min_rate > info->min_rate)
@ -130,15 +141,6 @@ static int snd_pcm_multi_info(void *private, snd_pcm_info_t *info)
if (info_i.max_fragments < info->max_fragments)
info->max_fragments = info_i.max_fragments;
}
channels = multi->channels_count;
info->buffer_size *= channels;
info->min_fragment_size *= channels;
info->max_fragment_size *= channels;
info->fragment_align *= channels;
info->min_channels = multi->channels_count;
info->max_channels = multi->channels_count;
if (multi->one_to_many)
info->flags &= ~(SND_PCM_INFO_MMAP | SND_PCM_INFO_MMAP_VALID);
return 0;
}
@ -239,7 +241,7 @@ static int snd_pcm_multi_setup(void *private, snd_pcm_setup_t *setup)
}
}
/* Loaded with a value != 0 if mmap is feasible */
setup->mmap_size = !multi->one_to_many;
setup->mmap_bytes = !multi->one_to_many;
return 0;
}
@ -592,6 +594,7 @@ struct snd_pcm_ops snd_pcm_multi_ops = {
close: snd_pcm_multi_close,
nonblock: snd_pcm_multi_nonblock,
info: snd_pcm_multi_info,
params_info: snd_pcm_multi_params_info,
params: snd_pcm_multi_params,
setup: snd_pcm_multi_setup,
channel_setup: snd_pcm_multi_channel_setup,