commit b51beb756aaf0770e4fa8bb2cb142888051aa356
author Takashi Iwai <tiwai@suse.de> Tue Jul 26 12:02:56 2011 +0200
committer Takashi Iwai <tiwai@suse.de> Tue Jul 26 17:21:24 2011 +0200
tree 89d6905997ef2f9094bc9c08d5fc88631a007e44
parent 4d7fbdbcb1d563b1822c74da3c9e4aa4523d8d6d

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>

include/sound/pcm.h

diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index ccf3a6e..57e71fa 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -761,17 +761,18 @@
 	return &params->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
 }
 
-#define params_access(p) ((__force snd_pcm_access_t)snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_ACCESS)))
-#define params_format(p) ((__force snd_pcm_format_t)snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_FORMAT)))
-#define params_subformat(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_SUBFORMAT))
-#define params_channels(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_CHANNELS)->min
-#define params_rate(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_RATE)->min
-#define params_period_size(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min
-#define params_period_bytes(p) ((params_period_size(p)*snd_pcm_format_physical_width(params_format(p))*params_channels(p))/8)
-#define params_periods(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_PERIODS)->min
-#define params_buffer_size(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min
-#define params_buffer_bytes(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min
-
+#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)
 
 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);

include/sound/pcm_params.h

diff --git a/include/sound/pcm_params.h b/include/sound/pcm_params.h
index 85cf1cf..f494f1e 100644
--- a/include/sound/pcm_params.h
+++ b/include/sound/pcm_params.h
@@ -337,5 +337,19 @@
 	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 */