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[ALSA] Export missing snd_pcm_format_*()

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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>
This commit is contained in:
Takashi Iwai 2005-05-18 16:25:46 +02:00 • committed by Jaroslav Kysela
parent e5b3f45f5d
commit 9502dcad6c
3 changed files with 15 additions and 16 deletions
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14
include/sound/pcm.h
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@ -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);