[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>

1 files changed, 14 insertions, 0 deletions

diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 53fc04d75bad..50a6ee1aeab2 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);