45 static bool valid_format(snd_pcm_format_t format)  in valid_format()  argument
47 	return (INT)format >= 0 && (INT)format <= (INT)SNDRV_PCM_FORMAT_LAST;  in valid_format()
194 	/* FIXME: the following format is not defined properly yet */
258  * snd_pcm_format_signed - Check the PCM format is signed linear
259  * @format: the format to check
261  * Return: 1 if the given PCM format is signed linear, 0 if unsigned
264 int snd_pcm_format_signed(snd_pcm_format_t format)  in snd_pcm_format_signed()  argument
267 	if (!valid_format(format))  in snd_pcm_format_signed()
269 	val = pcm_formats[(INT)format].signd;  in snd_pcm_format_signed()
277  * snd_pcm_format_unsigned - Check the PCM format is unsigned linear
278  * @format: the format to check
280  * Return: 1 if the given PCM format is unsigned linear, 0 if signed
283 int snd_pcm_format_unsigned(snd_pcm_format_t format)  in snd_pcm_format_unsigned()  argument
287 	val = snd_pcm_format_signed(format);  in snd_pcm_format_unsigned()
295  * snd_pcm_format_linear - Check the PCM format is linear
296  * @format: the format to check
298  * Return: 1 if the given PCM format is linear, 0 if not.
300 int snd_pcm_format_linear(snd_pcm_format_t format)  in snd_pcm_format_linear()  argument
302 	return snd_pcm_format_signed(format) >= 0;  in snd_pcm_format_linear()
307  * snd_pcm_format_little_endian - Check the PCM format is little-endian
308  * @format: the format to check
310  * Return: 1 if the given PCM format is little-endian, 0 if
313 int snd_pcm_format_little_endian(snd_pcm_format_t format)  in snd_pcm_format_little_endian()  argument
316 	if (!valid_format(format))  in snd_pcm_format_little_endian()
318 	val = pcm_formats[(INT)format].le;  in snd_pcm_format_little_endian()
326  * snd_pcm_format_big_endian - Check the PCM format is big-endian
327  * @format: the format to check
329  * Return: 1 if the given PCM format is big-endian, 0 if
332 int snd_pcm_format_big_endian(snd_pcm_format_t format)  in snd_pcm_format_big_endian()  argument
336 	val = snd_pcm_format_little_endian(format);  in snd_pcm_format_big_endian()
344  * snd_pcm_format_width - return the bit-width of the format
345  * @format: the format to check
347  * Return: The bit-width of the format, or a negative error code
348  * if unknown format.
350 int snd_pcm_format_width(snd_pcm_format_t format)  in snd_pcm_format_width()  argument
353 	if (!valid_format(format))  in snd_pcm_format_width()
355 	val = pcm_formats[(INT)format].width;  in snd_pcm_format_width()
363  * snd_pcm_format_physical_width - return the physical bit-width of the format
364  * @format: the format to check
366  * Return: The physical bit-width of the format, or a negative error code
367  * if unknown format.
369 int snd_pcm_format_physical_width(snd_pcm_format_t format)  in snd_pcm_format_physical_width()  argument
372 	if (!valid_format(format))  in snd_pcm_format_physical_width()
374 	val = pcm_formats[(INT)format].phys;  in snd_pcm_format_physical_width()
382  * snd_pcm_format_size - return the byte size of samples on the given format
383  * @format: the format to check
386  * Return: The byte size of the given samples for the format, or a
387  * negative error code if unknown format.
389 ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples)  in snd_pcm_format_size()  argument
391 	int phys_width = snd_pcm_format_physical_width(format);  in snd_pcm_format_size()
400  * @format: the format to check
402  * Return: The format pattern to fill or %NULL if error.
404 const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format)  in snd_pcm_format_silence_64()  argument
406 	if (!valid_format(format))  in snd_pcm_format_silence_64()
408 	if (! pcm_formats[(INT)format].phys)  in snd_pcm_format_silence_64()
410 	return pcm_formats[(INT)format].silence;  in snd_pcm_format_silence_64()
416  * @format: the PCM format
424 int snd_pcm_format_set_silence(snd_pcm_format_t format, void *data, unsigned int samples)  in snd_pcm_format_set_silence()  argument
430 	if (!valid_format(format))  in snd_pcm_format_set_silence()
434 	width = pcm_formats[(INT)format].phys; /* physical width */  in snd_pcm_format_set_silence()
435 	pat = pcm_formats[(INT)format].silence;  in snd_pcm_format_set_silence()
439 	if (pcm_formats[(INT)format].signd == 1 || width <= 8) {  in snd_pcm_format_set_silence()