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Fix buffer allocation and mmap with plugins

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Fixed the bug producing silent tones with some combinations of plugins.
The internal buffer handling is now better (cleaner) integrated with
snd_pcm_generic_*().
This commit is contained in:
Takashi Iwai 2005-09-02 16:36:40 +00:00
parent e62ecc876a
commit ffdb04c3ea
9 changed files with 48 additions and 78 deletions
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24
src/pcm/pcm_file.c
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@ -302,26 +302,6 @@ static int snd_pcm_file_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params)
return 0;
}
static int snd_pcm_file_mmap(snd_pcm_t *pcm ATTRIBUTE_UNUSED)
{
snd_pcm_file_t *file = pcm->private_data;
snd_pcm_t *slave = file->gen.slave;
pcm->running_areas = slave->running_areas;
pcm->stopped_areas = slave->stopped_areas;
pcm->mmap_channels = slave->mmap_channels;
pcm->mmap_shadow = 1;
return 0;
}
static int snd_pcm_file_munmap(snd_pcm_t *pcm ATTRIBUTE_UNUSED)
{
pcm->mmap_channels = NULL;
pcm->running_areas = NULL;
pcm->stopped_areas = NULL;
pcm->mmap_shadow = 0;
return 0;
}
static void snd_pcm_file_dump(snd_pcm_t *pcm, snd_output_t *out)
{
snd_pcm_file_t *file = pcm->private_data;
@ -348,8 +328,8 @@ static snd_pcm_ops_t snd_pcm_file_ops = {
.dump = snd_pcm_file_dump,
.nonblock = snd_pcm_generic_nonblock,
.async = snd_pcm_generic_async,
.mmap = snd_pcm_file_mmap,
.munmap = snd_pcm_file_munmap,
.mmap = snd_pcm_generic_mmap,
.munmap = snd_pcm_generic_munmap,
};
static snd_pcm_fast_ops_t snd_pcm_file_fast_ops = {