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ALSA: Make pcm.h self-contained

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Move the macros depending on snd_mask_min() and co out of pcm.h into
pcm_params.h.  Otherwise using some params_*() macros will give comiple
errors without inclusion of pcm_params.h.

Also use hw_param_interval_c() and hw_param_mask_c() for const pointer.

Reported-by: Tim Blechmann <tim@klingt.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2011-07-26 12:02:56 +02:00
parent 4d7fbdbcb1
commit b51beb756a
2 changed files with 27 additions and 12 deletions
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16
include/sound/pcm_params.h
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@ -337,5 +337,19 @@ static inline unsigned int sub(unsigned int a, unsigned int b)
return 0;
}
#endif /* __SOUND_PCM_PARAMS_H */
#define params_access(p) ((__force snd_pcm_access_t)\
snd_mask_min(hw_param_mask_c((p), SNDRV_PCM_HW_PARAM_ACCESS)))
#define params_format(p) ((__force snd_pcm_format_t)\
snd_mask_min(hw_param_mask_c((p), SNDRV_PCM_HW_PARAM_FORMAT)))
#define params_subformat(p) \
snd_mask_min(hw_param_mask_c((p), SNDRV_PCM_HW_PARAM_SUBFORMAT))
static inline unsigned int
params_period_bytes(const struct snd_pcm_hw_params *p)
{
return (params_period_size(p) *
snd_pcm_format_physical_width(params_format(p)) *
params_channels(p)) / 8;
}
#endif /* __SOUND_PCM_PARAMS_H */