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Commit 89827ca9 authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Takashi Iwai
Browse files

ALSA: pcm: Add kernel doc for params_*() functions 



Add kernel doc for the remaining undocumented params_*() functions.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 744c2ad2

include/sound/pcm_params.h

+33 −4
Original line number Diff line number Diff line
@@ -325,18 +325,30 @@ static inline int snd_interval_eq(const struct snd_interval *i1, const struct sn 
		i1->max == i2->max && i1->openmax == i2->openmax;

}



/**

 * params_access - get the access type from the hw params

 * @p: hw params

 */

static inline snd_pcm_access_t params_access(const struct snd_pcm_hw_params *p)

{

	return (__force snd_pcm_access_t)snd_mask_min(hw_param_mask_c(p,

		SNDRV_PCM_HW_PARAM_ACCESS));

}



/**

 * params_format - get the sample format from the hw params

 * @p: hw params

 */

static inline snd_pcm_format_t params_format(const struct snd_pcm_hw_params *p)

{

	return (__force snd_pcm_format_t)snd_mask_min(hw_param_mask_c(p,

		SNDRV_PCM_HW_PARAM_FORMAT));

}



/**

 * params_subformat - get the sample subformat from the hw params

 * @p: hw params

 */

static inline snd_pcm_subformat_t

params_subformat(const struct snd_pcm_hw_params *p)

{
@@ -344,6 +356,10 @@ params_subformat(const struct snd_pcm_hw_params *p) 
		SNDRV_PCM_HW_PARAM_SUBFORMAT));

}



/**

 * params_period_bytes - get the period size (in bytes) from the hw params

 * @p: hw params

 */

static inline unsigned int

params_period_bytes(const struct snd_pcm_hw_params *p)

{
@@ -352,14 +368,27 @@ params_period_bytes(const struct snd_pcm_hw_params *p) 
		params_channels(p)) / 8;

}



static inline int

params_width(const struct snd_pcm_hw_params *p)

/**

 * params_width - get the number of bits of the sample format from the hw params

 * @p: hw params

 *

 * This function returns the number of bits per sample that the selected sample

 * format of the hw params has.

 */

static inline int params_width(const struct snd_pcm_hw_params *p)

{

	return snd_pcm_format_width(params_format(p));

}



static inline int

params_physical_width(const struct snd_pcm_hw_params *p)

/*

 * params_physical_width - get the storage size of the sample format from the hw params

 * @p: hw params

 *

 * This functions returns the number of bits per sample that the selected sample

 * format of the hw params takes up in memory. This will be equal or larger than

 * params_width().

 */

static inline int params_physical_width(const struct snd_pcm_hw_params *p)

{

	return snd_pcm_format_physical_width(params_format(p));

}