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Major cleaning to hw_params mechanism for plugins

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This commit is contained in:
Abramo Bagnara 2001-01-18 18:20:31 +00:00
parent 1747dc039f
commit 3126678e72
17 changed files with 1259 additions and 1044 deletions
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90
src/pcm/pcm_copy.c
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@ -28,62 +28,68 @@ typedef struct {
snd_pcm_plugin_t plug;
} snd_pcm_copy_t;
static int snd_pcm_copy_hw_refine(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
static int snd_pcm_copy_hw_refine_cprepare(snd_pcm_t *pcm ATTRIBUTE_UNUSED, snd_pcm_hw_params_t *params)
{
snd_pcm_copy_t *copy = pcm->private;
snd_pcm_t *slave = copy->plug.slave;
int err;
unsigned int cmask, lcmask;
snd_pcm_hw_params_t sparams;
mask_t *access_mask = alloca(mask_sizeof());
mask_t *saccess_mask = alloca(mask_sizeof());
mask_load(access_mask, SND_PCM_ACCBIT_PLUGIN);
mask_load(saccess_mask, SND_PCM_ACCBIT_MMAP);
cmask = params->cmask;
params->cmask = 0;
err = _snd_pcm_hw_param_mask(params, SND_PCM_HW_PARAM_ACCESS,
access_mask);
if (err < 0)
return err;
lcmask = params->cmask;
params->cmask |= cmask;
_snd_pcm_hw_params_any(&sparams);
_snd_pcm_hw_param_mask(&sparams, SND_PCM_HW_PARAM_ACCESS,
saccess_mask);
err = snd_pcm_hw_refine2(params, &sparams,
snd_pcm_generic_hw_link, slave,
~SND_PCM_HW_PARBIT_ACCESS);
params->cmask |= lcmask;
params->info &= ~(SND_PCM_INFO_MMAP | SND_PCM_INFO_MMAP_VALID);
return 0;
}
static int snd_pcm_copy_hw_refine_sprepare(snd_pcm_t *pcm ATTRIBUTE_UNUSED, snd_pcm_hw_params_t *sparams)
{
mask_t *saccess_mask = alloca(mask_sizeof());
mask_load(saccess_mask, SND_PCM_ACCBIT_MMAP);
_snd_pcm_hw_params_any(sparams);
_snd_pcm_hw_param_mask(sparams, SND_PCM_HW_PARAM_ACCESS,
saccess_mask);
return 0;
}
static int snd_pcm_copy_hw_refine_schange(snd_pcm_t *pcm ATTRIBUTE_UNUSED, snd_pcm_hw_params_t *params,
snd_pcm_hw_params_t *sparams)
{
int err;
unsigned int links = ~SND_PCM_HW_PARBIT_ACCESS;
err = _snd_pcm_hw_params_refine(sparams, links, params);
if (err < 0)
return err;
params->info &= ~(SND_PCM_INFO_MMAP | SND_PCM_INFO_MMAP_VALID);
return err;
return 0;
}
static int snd_pcm_copy_hw_refine_cchange(snd_pcm_t *pcm ATTRIBUTE_UNUSED, snd_pcm_hw_params_t *params,
snd_pcm_hw_params_t *sparams)
{
int err;
unsigned int links = ~SND_PCM_HW_PARBIT_ACCESS;
err = _snd_pcm_hw_params_refine(params, links, sparams);
if (err < 0)
return err;
return 0;
}
static int snd_pcm_copy_hw_refine(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
{
return snd_pcm_hw_refine_slave(pcm, params,
snd_pcm_copy_hw_refine_cprepare,
snd_pcm_copy_hw_refine_cchange,
snd_pcm_copy_hw_refine_sprepare,
snd_pcm_copy_hw_refine_schange,
snd_pcm_plugin_hw_refine_slave);
}
static int snd_pcm_copy_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
{
snd_pcm_copy_t *copy = pcm->private;
snd_pcm_t *slave = copy->plug.slave;
int err;
unsigned int links;
snd_pcm_hw_params_t sparams;
mask_t *saccess_mask = alloca(mask_sizeof());
mask_load(saccess_mask, SND_PCM_ACCBIT_MMAP);
_snd_pcm_hw_params_any(&sparams);
_snd_pcm_hw_param_mask(&sparams, SND_PCM_HW_PARAM_ACCESS,
saccess_mask);
links = ~SND_PCM_HW_PARBIT_ACCESS;
err = snd_pcm_hw_params_refine(&sparams, links, params);
assert(err >= 0);
err = snd_pcm_hw_params(slave, &sparams);
params->cmask = 0;
sparams.cmask = ~0U;
snd_pcm_hw_params_refine(params, links, &sparams);
if (err < 0)
return err;
params->info &= ~(SND_PCM_INFO_MMAP | SND_PCM_INFO_MMAP_VALID);
return err;
return snd_pcm_hw_params_slave(pcm, params,
snd_pcm_copy_hw_refine_cchange,
snd_pcm_copy_hw_refine_sprepare,
snd_pcm_copy_hw_refine_schange,
snd_pcm_plugin_hw_params_slave);
}
static snd_pcm_sframes_t snd_pcm_copy_write_areas(snd_pcm_t *pcm,