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- splitted mmap in logical steps

Browse source 
- optimized mmap transfer
- completed mmap helpers
- renamed pcm_plugin_build.c to pcm_common.c
This commit is contained in:
Abramo Bagnara 2000-05-16 15:20:34 +00:00
parent 5b42e338bb
commit 7b054f4dce
17 changed files with 658 additions and 781 deletions
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59
src/pcm/pcm.c
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@ -83,10 +83,6 @@ int snd_pcm_channel_close(snd_pcm_t *pcm, int channel)
ret = err;
chan->open = 0;
chan->valid_setup = 0;
if (chan->valid_voices_setup) {
chan->valid_voices_setup = 0;
free(chan->voices_setup);
}
return ret;
}
@ -182,6 +178,9 @@ int snd_pcm_channel_setup(snd_pcm_t *pcm, snd_pcm_channel_setup_t *setup)
if ((err = pcm->ops->channel_setup(pcm, setup)) < 0)
return err;
memcpy(&chan->setup, setup, sizeof(*setup));
chan->sample_width = snd_pcm_format_physical_width(setup->format.format);
chan->bits_per_sample = chan->sample_width * setup->format.voices;
chan->samples_per_frag = setup->frag_size * 8 / chan->bits_per_sample;
chan->valid_setup = 1;
return 0;
}
@ -209,61 +208,9 @@ int snd_pcm_voice_setup(snd_pcm_t *pcm, int channel, snd_pcm_voice_setup_t *setu
chan = &pcm->chan[channel];
if (!chan->open || !chan->valid_setup)
return -EBADFD;
if (chan->valid_voices_setup) {
if (setup->voice >= chan->setup.format.voices)
return -EINVAL;
memcpy(setup, &chan->voices_setup[setup->voice], sizeof(*setup));
return 0;
}
return pcm->ops->voice_setup(pcm, channel, setup);
}
const snd_pcm_voice_setup_t* snd_pcm_channel_cached_voice_setup(snd_pcm_t *pcm, int channel, unsigned int voice)
{
struct snd_pcm_chan *chan;
if (!pcm)
return 0;
if (channel < 0 || channel > 1)
return 0;
chan = &pcm->chan[channel];
if (!chan->open || !chan->valid_setup)
return 0;
if (voice >= chan->setup.format.voices)
return 0;
return &chan->voices_setup[voice];
}
int snd_pcm_all_voices_setup(snd_pcm_t *pcm, int channel, snd_pcm_voice_setup_t *setup)
{
struct snd_pcm_chan *chan;
snd_pcm_voice_setup_t *vs, *v;
unsigned int voice;
int err;
if (!pcm)
return -EFAULT;
if (channel < 0 || channel > 1)
return -EINVAL;
chan = &pcm->chan[channel];
if (!chan->open || !chan->valid_setup)
return -EBADFD;
vs = calloc(chan->setup.format.voices, sizeof(*setup));
for (voice = 0, v = vs; voice < chan->setup.format.voices; ++voice, ++v) {
v->voice = voice;
err = snd_pcm_voice_setup(pcm, channel, v);
if (err < 0) {
free(vs);
return err;
}
if (setup) {
memcpy(setup, v, sizeof(*setup));
setup++;
}
}
chan->voices_setup = vs;
chan->valid_voices_setup = 1;
return 0;
}
int snd_pcm_channel_status(snd_pcm_t *pcm, snd_pcm_channel_status_t *status)
{
if (!pcm || !status)