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In ALSA PCM interface, before configuring hardware actually, applications can request available set of hardware parameters for runtime of PCM substream. The set of parameters are represented and delivered by a structure. In alsa-lib PCM API, the above design is abstracted by a series of snd_pcm_hw_params_xxx() functions. An actual layout of the structure is hidden from applications by an opaque pointer. In aplay, '--dump-hw-params' option is for this purpose. With this option, the command output available set of the hardware parameters. This commit adds support for the option. Unlike aplay, this commit takes this program to finish after dumping the parameters for simplicity of usage. I note that all of combinations in the set are not necessarily available when the PCM substream includes dependencies of parameters described by constraints and rules. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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.. | ||
test | ||
container-au.c | ||
container-raw.c | ||
container-riff-wave.c | ||
container-voc.c | ||
container.c | ||
container.h | ||
frame-cache.c | ||
frame-cache.h | ||
main.c | ||
Makefile.am | ||
mapper-multiple.c | ||
mapper-single.c | ||
mapper.c | ||
mapper.h | ||
misc.h | ||
subcmd-list.c | ||
subcmd-transfer.c | ||
subcmd.h | ||
xfer-libasound-irq-rw.c | ||
xfer-libasound.c | ||
xfer-libasound.h | ||
xfer-options.c | ||
xfer.c | ||
xfer.h |