iOS AudioUnit Settings and WP8 MediaStreamSource settings

gistfile1.cs

        const int ChannelCount = 1;
        const int BitsPerSample = 2;
        const int BufferSamples = 16;     // can be changed
        const int BufferSize = 4096; //same as max buffer for iOS and Android        

protected override void OpenMediaAsync()
        {
            int byteRate = sampleRate * ChannelCount * BitsPerSample / 8;
            Debug.WriteLine("ByteRate: "+byteRate);
            short blockAlign = (short)(ChannelCount * (BitsPerSample / 8));

             //Build string-based wave-format structure
            string waveFormat = "";
            waveFormat += ToLittleEndianString(string.Format("{0:X4}", 1));      // indicates PCM
            waveFormat += ToLittleEndianString(string.Format("{0:X4}", ChannelCount));
            waveFormat += ToLittleEndianString(string.Format("{0:X8}", sampleRate));
            waveFormat += ToLittleEndianString(string.Format("{0:X8}", byteRate));
            waveFormat += ToLittleEndianString(string.Format("{0:X4}", blockAlign));
            waveFormat += ToLittleEndianString(string.Format("{0:X4}", BitsPerSample));
            waveFormat += ToLittleEndianString(string.Format("{0:X4}", 0));

            // Put wave format string in media streams dictionary
            var mediaStreamAttributes = new Dictionary<MediaStreamAttributeKeys, string>();
            mediaStreamAttributes[MediaStreamAttributeKeys.CodecPrivateData] = waveFormat;

            // Make description to add to available streams list
            var availableMediaStreams = new List<MediaStreamDescription>();
            mediaStreamDescription = new MediaStreamDescription(MediaStreamType.Audio, mediaStreamAttributes);
            availableMediaStreams.Add(mediaStreamDescription);

            // Set some appropriate keys in the media source dictionary
            var mediaSourceAttributes = new Dictionary<MediaSourceAttributesKeys, string>();
            mediaSourceAttributes[MediaSourceAttributesKeys.Duration] = "0";
            mediaSourceAttributes[MediaSourceAttributesKeys.CanSeek] = "false";

            // Signal that the open operation is completed
            ReportOpenMediaCompleted(mediaSourceAttributes, availableMediaStreams);
        }

gistfile2.m

	AudioStreamBasicDescription audioFormat;
	audioFormat.mSampleRate			= 44100.00;
	audioFormat.mFormatID			= kAudioFormatLinearPCM;
	audioFormat.mFormatFlags		= kAudioFormatFlagIsPacked | kAudioFormatFlagIsSignedInteger;
	audioFormat.mFramesPerPacket	= 1;
	audioFormat.mChannelsPerFrame	= 1;
	audioFormat.mBitsPerChannel		= 16;
	audioFormat.mBytesPerPacket		= 2;
	audioFormat.mBytesPerFrame		= 2;