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authorTakashi Iwai <tiwai@suse.de>2011-07-26 12:02:56 +0200
committerTakashi Iwai <tiwai@suse.de>2011-07-26 17:21:24 +0200
commitb51beb756aaf0770e4fa8bb2cb142888051aa356 (patch)
tree89d6905997ef2f9094bc9c08d5fc88631a007e44 /include/sound/pcm_params.h
parent4d7fbdbcb1d563b1822c74da3c9e4aa4523d8d6d (diff)
ALSA: Make pcm.h self-contained
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>
Diffstat (limited to 'include/sound/pcm_params.h')
-rw-r--r--include/sound/pcm_params.h16
1 files changed, 15 insertions, 1 deletions
diff --git a/include/sound/pcm_params.h b/include/sound/pcm_params.h
index 85cf1cf4f31a..f494f1e3c900 100644
--- a/include/sound/pcm_params.h
+++ b/include/sound/pcm_params.h
@@ -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 */