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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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21
src/pcm/pcm_null.c
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@ -79,11 +79,6 @@ static int snd_pcm_null_info(snd_pcm_t *pcm, snd_pcm_info_t * info)
return 0;
}
static int snd_pcm_null_channel_info(snd_pcm_t *pcm, snd_pcm_channel_info_t * info)
{
return snd_pcm_channel_info_shm(pcm, info, -1);
}
static int snd_pcm_null_status(snd_pcm_t *pcm, snd_pcm_status_t * status)
{
snd_pcm_null_t *null = pcm->private_data;
@ -276,16 +271,6 @@ static int snd_pcm_null_sw_params(snd_pcm_t *pcm ATTRIBUTE_UNUSED, snd_pcm_sw_pa
return 0;
}
static int snd_pcm_null_mmap(snd_pcm_t *pcm ATTRIBUTE_UNUSED)
{
return 0;
}
static int snd_pcm_null_munmap(snd_pcm_t *pcm ATTRIBUTE_UNUSED)
{
return 0;
}
static void snd_pcm_null_dump(snd_pcm_t *pcm, snd_output_t *out)
{
snd_output_printf(out, "Null PCM\n");
@ -302,12 +287,12 @@ static snd_pcm_ops_t snd_pcm_null_ops = {
.hw_params = snd_pcm_null_hw_params,
.hw_free = snd_pcm_null_hw_free,
.sw_params = snd_pcm_null_sw_params,
.channel_info = snd_pcm_null_channel_info,
.channel_info = snd_pcm_generic_channel_info,
.dump = snd_pcm_null_dump,
.nonblock = snd_pcm_null_nonblock,
.async = snd_pcm_null_async,
.mmap = snd_pcm_null_mmap,
.munmap = snd_pcm_null_munmap,
.mmap = snd_pcm_generic_mmap,
.munmap = snd_pcm_generic_munmap,
};
static snd_pcm_fast_ops_t snd_pcm_null_fast_ops = {