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ALSA: pcm: Convert params_*() with static inline functions

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... and add proper kerneldoc comments.
There is no big reason to keep them as macros.  Static inline
functions are safer in general, and suitable for kerneldoc, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2014-10-30 15:06:13 +01:00
parent 30b771cf8c
commit 85926e0fe8
1 changed files with 53 additions and 12 deletions
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65
include/sound/pcm.h
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@ -841,18 +841,59 @@ static inline const struct snd_interval *hw_param_interval_c(const struct snd_pc
return &params->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
}
#define params_channels(p) \
(hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_CHANNELS)->min)
#define params_rate(p) \
(hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_RATE)->min)
#define params_period_size(p) \
(hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min)
#define params_periods(p) \
(hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_PERIODS)->min)
#define params_buffer_size(p) \
(hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min)
#define params_buffer_bytes(p) \
(hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min)
/**
* params_channels - Get the number of channels from the hw params
* @p: hw params
*/
static inline unsigned int params_channels(const struct snd_pcm_hw_params *p)
{
return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_CHANNELS)->min;
}
/**
* params_channels - Get the sample rate from the hw params
* @p: hw params
*/
static inline unsigned int params_rate(const struct snd_pcm_hw_params *p)
{
return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_RATE)->min;
}
/**
* params_channels - Get the period size (in frames) from the hw params
* @p: hw params
*/
static inline unsigned int params_period_size(const struct snd_pcm_hw_params *p)
{
return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min;
}
/**
* params_channels - Get the number of periods from the hw params
* @p: hw params
*/
static inline unsigned int params_periods(const struct snd_pcm_hw_params *p)
{
return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_PERIODS)->min;
}
/**
* params_channels - Get the buffer size (in frames) from the hw params
* @p: hw params
*/
static inline unsigned int params_buffer_size(const struct snd_pcm_hw_params *p)
{
return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min;
}
/**
* params_channels - Get the buffer size (in bytes) from the hw params
* @p: hw params
*/
static inline unsigned int params_buffer_bytes(const struct snd_pcm_hw_params *p)
{
return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min;
}
int snd_interval_refine(struct snd_interval *i, const struct snd_interval *v);
void snd_interval_mul(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c);