[alsa-devel] [PATCH] [updated] pcm: rate: Add capability to pass configuration node to plugins

Here is a revised patch.

It is useful for the converter used by a rate plugin to be capable of receiving configuration. This patch enables the "converter" node of the configuration of a "type rate" plugin to be specified as a compound and passed to open func of the converter plugin.

The SND_PCM_RATE_PLUGIN_CONF_ENTRY macro is used to define a rate converter plugin entry point that takes the additional snd_config_t *conf parameter. If a rate converter plugin also supports the existing SND_PCM_RATE_PLUGIN_ENTRY entry point, or if passed conf parameter is NULL then it is up to the plugin to determine whether or not this is a fatal condition.

Alan.