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authorTakashi Iwai <tiwai@suse.de>2005-05-18 16:25:46 +0200
committerJaroslav Kysela <perex@suse.cz>2005-05-29 10:11:11 +0200
commit9502dcad6c1138a3ce2bae23ccd4be44c718d2a9 (patch)
tree008d96ca9953b55ba1bf3255e61e28de25997a0f /include/sound
parente5b3f45f5d442b57dd07dd4f914f7e6cf4d183f1 (diff)
downloadop-kernel-dev-9502dcad6c1138a3ce2bae23ccd4be44c718d2a9.zip
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[ALSA] Export missing snd_pcm_format_*()
PCM Midlevel Export snd_pcm_format_size(). This function is used by some out-of-kernel drivers. Make snd_pcm_format_cpu_endian() macro for optimization. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound')
-rw-r--r--include/sound/pcm.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 53fc04d..50a6ee1 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -922,8 +922,22 @@ int snd_pcm_format_unsigned(snd_pcm_format_t format);
int snd_pcm_format_linear(snd_pcm_format_t format);
int snd_pcm_format_little_endian(snd_pcm_format_t format);
int snd_pcm_format_big_endian(snd_pcm_format_t format);
+/**
+ * snd_pcm_format_cpu_endian - Check the PCM format is CPU-endian
+ * @format: the format to check
+ *
+ * Returns 1 if the given PCM format is CPU-endian, 0 if
+ * opposite, or a negative error code if endian not specified.
+ */
+/* int snd_pcm_format_cpu_endian(snd_pcm_format_t format); */
+#ifdef SNDRV_LITTLE_ENDIAN
+#define snd_pcm_format_cpu_endian snd_pcm_format_little_endian
+#else
+#define snd_pcm_format_cpu_endian snd_pcm_format_big_endian
+#endif
int snd_pcm_format_width(snd_pcm_format_t format); /* in bits */
int snd_pcm_format_physical_width(snd_pcm_format_t format); /* in bits */
+ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples);
const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format);
int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int frames);
snd_pcm_format_t snd_pcm_build_linear_format(int width, int unsignd, int big_endian);
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