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 );
Use the -l asound option to qcc to link against this library.
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.
You can confirm the channel's configuration by reading it back with snd_pcm_plugin_setup().
Zero, or a negative error code.
- The state of handle is invalid, the format is unsupported, or an invalid state change occurred. You can call snd_pcm_channel_status() to check if the state change was invalid.
This function is not thread safe if handle (snd_pcm_t) is used across multiple threads.
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.
Last modified: 2014-06-24