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 	if ((val = pcm_formats[(INT)format].signd) < 0)  in snd_pcm_format_signed()
276  * snd_pcm_format_unsigned - Check the PCM format is unsigned linear
277  * @format: the format to check
279  * Return: 1 if the given PCM format is unsigned linear, 0 if signed
282 int snd_pcm_format_unsigned(snd_pcm_format_t format)  in snd_pcm_format_unsigned()  argument
286 	val = snd_pcm_format_signed(format);  in snd_pcm_format_unsigned()
294  * snd_pcm_format_linear - Check the PCM format is linear
295  * @format: the format to check
297  * Return: 1 if the given PCM format is linear, 0 if not.
299 int snd_pcm_format_linear(snd_pcm_format_t format)  in snd_pcm_format_linear()  argument
301 	return snd_pcm_format_signed(format) >= 0;  in snd_pcm_format_linear()
306  * snd_pcm_format_little_endian - Check the PCM format is little-endian
307  * @format: the format to check
309  * Return: 1 if the given PCM format is little-endian, 0 if
312 int snd_pcm_format_little_endian(snd_pcm_format_t format)  in snd_pcm_format_little_endian()  argument
315 	if (!valid_format(format))  in snd_pcm_format_little_endian()
317 	if ((val = pcm_formats[(INT)format].le) < 0)  in snd_pcm_format_little_endian()
324  * snd_pcm_format_big_endian - Check the PCM format is big-endian
325  * @format: the format to check
327  * Return: 1 if the given PCM format is big-endian, 0 if
330 int snd_pcm_format_big_endian(snd_pcm_format_t format)  in snd_pcm_format_big_endian()  argument
334 	val = snd_pcm_format_little_endian(format);  in snd_pcm_format_big_endian()
342  * snd_pcm_format_width - return the bit-width of the format
343  * @format: the format to check
345  * Return: The bit-width of the format, or a negative error code
346  * if unknown format.
348 int snd_pcm_format_width(snd_pcm_format_t format)  in snd_pcm_format_width()  argument
351 	if (!valid_format(format))  in snd_pcm_format_width()
353 	if ((val = pcm_formats[(INT)format].width) == 0)  in snd_pcm_format_width()
360  * snd_pcm_format_physical_width - return the physical bit-width of the format
361  * @format: the format to check
363  * Return: The physical bit-width of the format, or a negative error code
364  * if unknown format.
366 int snd_pcm_format_physical_width(snd_pcm_format_t format)  in snd_pcm_format_physical_width()  argument
369 	if (!valid_format(format))  in snd_pcm_format_physical_width()
371 	if ((val = pcm_formats[(INT)format].phys) == 0)  in snd_pcm_format_physical_width()
378  * snd_pcm_format_size - return the byte size of samples on the given format
379  * @format: the format to check
382  * Return: The byte size of the given samples for the format, or a
383  * negative error code if unknown format.
385 ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples)  in snd_pcm_format_size()  argument
387 	int phys_width = snd_pcm_format_physical_width(format);  in snd_pcm_format_size()
396  * @format: the format to check
398  * Return: The format pattern to fill or %NULL if error.
400 const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format)  in snd_pcm_format_silence_64()  argument
402 	if (!valid_format(format))  in snd_pcm_format_silence_64()
404 	if (! pcm_formats[(INT)format].phys)  in snd_pcm_format_silence_64()
406 	return pcm_formats[(INT)format].silence;  in snd_pcm_format_silence_64()
412  * @format: the PCM format
420 int snd_pcm_format_set_silence(snd_pcm_format_t format, void *data, unsigned int samples)  in snd_pcm_format_set_silence()  argument
426 	if (!valid_format(format))  in snd_pcm_format_set_silence()
430 	width = pcm_formats[(INT)format].phys; /* physical width */  in snd_pcm_format_set_silence()
431 	pat = pcm_formats[(INT)format].silence;  in snd_pcm_format_set_silence()
435 	if (pcm_formats[(INT)format].signd == 1 || width <= 8) {  in snd_pcm_format_set_silence()