* Preprocess several channel in audio frame in order to compress it better.
*
* @param ctx preprocessing context
- * @param audio samples to preprocess
- * @param dest place to put filtered samples
- * @param tag channel number
- * @param channels number of channel to preprocess (some additional work may be done on stereo pair)
+ * @param audio samples to be filtered (in place)
+ * @param channels number of channel to preprocess
*/
-void ff_psy_preprocess(struct FFPsyPreprocessContext *ctx, const float *audio,
- float *dest, int tag, int channels);
+void ff_psy_preprocess(struct FFPsyPreprocessContext *ctx, float **audio, int channels);
/**
* Cleanup audio preprocessing module.