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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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23
src/pcm/pcm_plug.c
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@ -438,6 +438,7 @@ static int snd_pcm_plug_channel_params(snd_pcm_t *pcm, snd_pcm_channel_params_t
}
/* compute right sizes */
slave_params.buffer_size = snd_pcm_plug_slave_size(pcm, channel, slave_params.buffer_size);
slave_params.frag_size = snd_pcm_plug_slave_size(pcm, channel, slave_params.frag_size);
if (params->mode == SND_PCM_MODE_STREAM) {
slave_params.buf.stream.bytes_fill_max = snd_pcm_plug_slave_size(pcm, channel, slave_params.buf.stream.bytes_fill_max);
@ -471,7 +472,7 @@ static int snd_pcm_plug_channel_setup(snd_pcm_t *pcm, snd_pcm_channel_setup_t *s
setup->buffer_size = snd_pcm_plug_client_size(pcm, setup->channel, setup->buffer_size);
setup->frag_size = snd_pcm_plug_client_size(pcm, setup->channel, setup->frag_size);
/* FIXME: it may overflow */
setup->pos_boundary = snd_pcm_plug_client_size(pcm, setup->channel, setup->pos_boundary);
setup->byte_boundary = snd_pcm_plug_client_size(pcm, setup->channel, setup->byte_boundary);
if (setup->mode == SND_PCM_MODE_STREAM) {
setup->buf.stream.bytes_min = snd_pcm_plug_client_size(pcm, setup->channel, setup->buf.stream.bytes_min);
setup->buf.stream.bytes_align = snd_pcm_plug_client_size(pcm, setup->channel, setup->buf.stream.bytes_align);
@ -500,8 +501,8 @@ static int snd_pcm_plug_channel_status(snd_pcm_t *pcm, snd_pcm_channel_status_t
return 0;
/* FIXME: may overflow */
status->pos_io = snd_pcm_plug_client_size(pcm, status->channel, status->pos_io);
status->pos_data = snd_pcm_plug_client_size(pcm, status->channel, status->pos_data);
status->byte_io = snd_pcm_plug_client_size(pcm, status->channel, status->byte_io);
status->byte_data = snd_pcm_plug_client_size(pcm, status->channel, status->byte_data);
status->bytes_used = snd_pcm_plug_client_size(pcm, status->channel, status->bytes_used);
status->bytes_free = snd_pcm_plug_client_size(pcm, status->channel, status->bytes_free);
return 0;
@ -605,8 +606,8 @@ static int snd_pcm_plug_voice_setup(snd_pcm_t *pcm, int channel, snd_pcm_voice_s
memset(setup, 0, sizeof(*setup));
setup->voice = voice;
chan = &pcm->chan[channel];
if (!chan->mmap_control) {
setup->addr = -1;
if (!chan->mmap_data) {
setup->area.addr = 0;
return 0;
}
if (voice >= chan->setup.format.voices)
@ -617,14 +618,14 @@ static int snd_pcm_plug_voice_setup(snd_pcm_t *pcm, int channel, snd_pcm_voice_s
return width;
size = chan->mmap_data_size;
if (chan->setup.format.interleave) {
setup->addr = 0;
setup->first = voice * width;
setup->step = chan->setup.format.voices * width;
setup->area.addr = chan->mmap_data;
setup->area.first = chan->sample_width;
setup->area.step = chan->bits_per_sample;
} else {
size /= chan->setup.format.voices;
setup->addr = setup->voice * size;
setup->first = 0;
setup->step = width;
setup->area.addr = chan->mmap_data + setup->voice * size;
setup->area.first = 0;
setup->area.step = width;
}
return 0;
}