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

[Alan Young]

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.

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