Set the configurable parameters for a PCM channel (plugin-aware)
#include <sys/asoundlib.h> int snd_pcm_plugin_params( snd_pcm_t *handle, snd_pcm_channel_params_t *params );
libasound.so
The snd_pcm_plugin_params() function sets up the transfer parameters according to params.
You can call the function in SND_PCM_STATUS_NOTREADY (initial) and SND_PCM_STATUS_READY states; otherwise, snd_pcm_plugin_params() returns -EBADFD.
If the parameters are valid (i.e. snd_pcm_plugin_params() returns zero), the driver state is changed to SND_PCM_STATUS_READY.
Zero, or a negative error code.
See the wave.c example in the appendix.
QNX Neutrino
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |
This function is the plugin-aware version of snd_pcm_channel_params(). It functions exactly the same way. However, make sure that you don't mix and match plugin- and nonplugin-aware functions in your application, or you may get undefined behavior and misleading results.
snd_pcm_channel_params(), snd_pcm_channel_params_t, snd_pcm_channel_setup(), snd_pcm_open(), snd_pcm_open_preferred(), snd_pcm_plugin_setup()