public WavFileStream(Stream stream)
{
_stream = stream;
var bytes = new byte[20];
if (_stream.Read(bytes, 0, bytes.Length) < bytes.Length ||
BitConverter.ToInt32(bytes, 4) == 0 ||
BitConverter.ToInt32(bytes, 8) != 0x45564157 || // "WAVE"
BitConverter.ToInt32(bytes, 12) != 0x20746d66) // "fmt "
{
throw new FileFormatException("Badly formed RIFF file.");
}
var fmtBytes = new byte[BitConverter.ToInt32(bytes, 16)];
_stream.Read(fmtBytes, 0, fmtBytes.Length);
_format = new WaveFormat(fmtBytes);
while (_stream.Read(bytes, 0, 8) == 8)
{
var dataType = BitConverter.ToInt32(bytes, 0);
var dataSize = BitConverter.ToInt32(bytes, 4);
if (dataType == 0x61746164)
{
return;
}
_stream.Seek(dataSize, SeekOrigin.Current);
}
throw new FileFormatException("Could not find wave data.");
}
public CodecInfo(VoiceCodec codec, int sampleRate)
{
switch (codec)
{
case VoiceCodec.Gsm610:
this.PayloadType = Gsm610PayloadType;
this.SampleRate = sampleRate;
int blocksPerPacket = 1;
while ((blocksPerPacket * Gsm610SamplesPerBlock * 1000) / sampleRate <= MinBufferLength)
{
blocksPerPacket++;
}
this.SamplesPerPacket = Gsm610SamplesPerBlock * blocksPerPacket;
this.EncodedBufferSize = Gsm610BytesPerBlock * blocksPerPacket;
this.DecodedBufferSize = this.SamplesPerPacket * 2;
this.EncodedFormat = new WaveFormatGsm610(sampleRate);
this.DecodedFormat = new WaveFormatPcm(sampleRate, 16, 1);
break;
default:
throw new ArgumentException("Unsupported codec.");
}
}
internal AudioOutputClient(IAudioClient client, WaveFormat format)
: base(client, format)
{
_render = this.GetService<IAudioRenderClient>();
}
internal AudioInputClient(IAudioClient client, WaveFormat format)
: base(client, format)
{
_capture = this.GetService<IAudioCaptureClient>();
}
public AudioOutputClient GetOutputClient(WaveFormat format = null)
{
return new AudioOutputClient(this.CreateClient(), format);
}
internal AudioInputClient(IAudioClient client, WaveFormat format)
: base(client, format)
{
_capture = this.GetService <IAudioCaptureClient>();
}
internal AudioOutputClient(IAudioClient client, WaveFormat format)
: base(client, format)
{
_render = this.GetService <IAudioRenderClient>();
}
