added format change function

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3723 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/media/media-add-ons/mixer/MixerOutput.cpp

@@ -22,3 +22,13 @@ MixerOutput::MediaOutput()
 {
 	return fOutput;
 }
+
+void
+MixerOutput::ChangeFormat(const media_multi_audio_format &format)
+{
+	fOutput.format.u.raw_audio = format;
+	fix_multiaudio_format(&fOutput.format.u.raw_audio);
+	
+	PRINT_OUTPUT("MixerOutput::ChangeFormat", fOutput);
+	PRINT_CHANNEL_MASK(fOutput.format);
+}

src/add-ons/media/media-add-ons/mixer/MixerOutput.h

@@ -11,6 +11,8 @@ public:
 	
 	media_output & MediaOutput();
 	
+	void ChangeFormat(const media_multi_audio_format &format);
+	
 private:
 	MixerCore *fCore;
 	media_output fOutput;