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[ALSA] Clean up ugly hacks in pcm_lib.c 

Clean up ugly hacks for sync with alsa-lib code in pcm_lib.c.
Also, optimize snd_pcm_hw_params_choose() with a loop.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2006-04-28 15:13:40 +02:00 committed by Jaroslav Kysela
parent e88e8ae639
commit 2f4ca8e5c7
1 changed files with 25 additions and 43 deletions
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68
sound/core/pcm_lib.c
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@ -1163,12 +1163,6 @@ int snd_pcm_hw_constraint_pow2(struct snd_pcm_runtime *runtime,
EXPORT_SYMBOL(snd_pcm_hw_constraint_pow2);
/* To use the same code we have in alsa-lib */
#define assert(i) snd_assert((i), return -EINVAL)
#ifndef INT_MIN
#define INT_MIN ((int)((unsigned int)INT_MAX+1))
#endif
static void _snd_pcm_hw_param_any(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
{
@ -1228,7 +1222,6 @@ int snd_pcm_hw_param_value(const struct snd_pcm_hw_params *params,
*dir = i->openmin;
return snd_interval_value(i);
}
assert(0);
return -EINVAL;
}
@ -1260,10 +1253,8 @@ static int _snd_pcm_hw_param_first(struct snd_pcm_hw_params *params,
changed = snd_mask_refine_first(hw_param_mask(params, var));
else if (hw_is_interval(var))
changed = snd_interval_refine_first(hw_param_interval(params, var));
else {
assert(0);
else
return -EINVAL;
}
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
@ -1292,7 +1283,7 @@ int snd_pcm_hw_param_first(struct snd_pcm_substream *pcm,
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
assert(err >= 0);
snd_assert(err >= 0, return err);
}
return snd_pcm_hw_param_value(params, var, dir);
}
@ -1307,10 +1298,8 @@ static int _snd_pcm_hw_param_last(struct snd_pcm_hw_params *params,
changed = snd_mask_refine_last(hw_param_mask(params, var));
else if (hw_is_interval(var))
changed = snd_interval_refine_last(hw_param_interval(params, var));
else {
assert(0);
else
return -EINVAL;
}
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
@ -1339,7 +1328,7 @@ int snd_pcm_hw_param_last(struct snd_pcm_substream *pcm,
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
assert(err >= 0);
snd_assert(err >= 0, return err);
}
return snd_pcm_hw_param_value(params, var, dir);
}
@ -1356,39 +1345,32 @@ EXPORT_SYMBOL(snd_pcm_hw_param_last);
* first access, first format, first subformat, min channels,
* min rate, min period time, max buffer size, min tick time
*/
int snd_pcm_hw_params_choose(struct snd_pcm_substream *pcm, struct snd_pcm_hw_params *params)
int snd_pcm_hw_params_choose(struct snd_pcm_substream *pcm,
struct snd_pcm_hw_params *params)
{
int err;
err = snd_pcm_hw_param_first(pcm, params, SNDRV_PCM_HW_PARAM_ACCESS, NULL);
assert(err >= 0);
err = snd_pcm_hw_param_first(pcm, params, SNDRV_PCM_HW_PARAM_FORMAT, NULL);
assert(err >= 0);
err = snd_pcm_hw_param_first(pcm, params, SNDRV_PCM_HW_PARAM_SUBFORMAT, NULL);
assert(err >= 0);
err = snd_pcm_hw_param_first(pcm, params, SNDRV_PCM_HW_PARAM_CHANNELS, NULL);
assert(err >= 0);
err = snd_pcm_hw_param_first(pcm, params, SNDRV_PCM_HW_PARAM_RATE, NULL);
assert(err >= 0);
err = snd_pcm_hw_param_first(pcm, params, SNDRV_PCM_HW_PARAM_PERIOD_TIME, NULL);
assert(err >= 0);
err = snd_pcm_hw_param_last(pcm, params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL);
assert(err >= 0);
err = snd_pcm_hw_param_first(pcm, params, SNDRV_PCM_HW_PARAM_TICK_TIME, NULL);
assert(err >= 0);
static int vars[] = {
SNDRV_PCM_HW_PARAM_ACCESS,
SNDRV_PCM_HW_PARAM_FORMAT,
SNDRV_PCM_HW_PARAM_SUBFORMAT,
SNDRV_PCM_HW_PARAM_CHANNELS,
SNDRV_PCM_HW_PARAM_RATE,
SNDRV_PCM_HW_PARAM_PERIOD_TIME,
SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
SNDRV_PCM_HW_PARAM_TICK_TIME,
-1
};
int err, *v;
for (v = vars; *v != -1; v++) {
if (*v != SNDRV_PCM_HW_PARAM_BUFFER_SIZE)
err = snd_pcm_hw_param_first(pcm, params, *v, NULL);
else
err = snd_pcm_hw_param_last(pcm, params, *v, NULL);
snd_assert(err >= 0, return err);
}
return 0;
}
#undef assert
static int snd_pcm_lib_ioctl_reset(struct snd_pcm_substream *substream,
void *arg)
{