ALSA: pcm: Simplify params_period_bytes()
authorLars-Peter Clausen <lars@metafoo.de>
Mon, 29 Dec 2014 18:41:43 +0000 (19:41 +0100)
committerTakashi Iwai <tiwai@suse.de>
Tue, 30 Dec 2014 15:41:55 +0000 (16:41 +0100)
The hw_params struct has a parameter that contains the period size in bytes.
This can be used instead of deriving the value from other parameters. This
is similar to e.g. params_buffer_bytes()

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
include/sound/pcm_params.h

index 2e2169e4985f2bcd362671d9b6901be9b258a0b2..042049bab0b91edf07ae654d27840ebf64787426 100644 (file)
@@ -363,9 +363,7 @@ params_subformat(const struct snd_pcm_hw_params *p)
 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;
+       return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_PERIOD_BYTES)->min;
 }
 
 /**