internal void InitRun(AudioBase audioDevice, int defaultRate, Prompt prompt)
{
_audio = audioDevice;
_prompt = prompt;
_defaultRate = defaultRate;
_actions = (SPVESACTIONS.SPVES_RATE | SPVESACTIONS.SPVES_VOLUME);
}
void ISpEngineSite.LoadResource(string uri, ref string mediaType, out IStream stream)
{
mediaType = null;
try
{
Stream stream2 = _site.LoadResource(new Uri(uri, UriKind.RelativeOrAbsolute), mediaType);
BinaryReader br = new BinaryReader(stream2);
byte[] waveFormat = AudioBase.GetWaveFormat(br);
mediaType = null;
if (waveFormat != null)
{
WAVEFORMATEX wAVEFORMATEX = WAVEFORMATEX.ToWaveHeader(waveFormat);
WaveFormatId wFormatTag = (WaveFormatId)wAVEFORMATEX.wFormatTag;
if (wFormatTag == WaveFormatId.Pcm || (uint)(wFormatTag - 6) <= 1u)
{
mediaType = "audio/x-wav";
}
}
stream2.Position = 0L;
stream = new SpStreamWrapper(stream2);
}
catch
{
stream = null;
}
}
internal override void End()
{
if (!_deviceOpen)
{
throw new InvalidOperationException();
}
_deviceOpen = false;
if (!_aborted && _hasHeader)
{
long position = _stream.Position;
AudioBase.WriteWaveHeader(_stream, _wfxOut, _startStreamPosition, _totalByteWrittens);
_stream.Seek(position, SeekOrigin.Begin);
}
}
internal override void Begin(byte[] wfx)
{
if (_deviceOpen)
{
throw new InvalidOperationException();
}
_wfxIn = WAVEFORMATEX.ToWaveHeader(wfx);
_doConversion = _pcmConverter.PrepareConverter(ref _wfxIn, ref _wfxOut);
if (_totalByteWrittens == 0 && _hasHeader)
{
AudioBase.WriteWaveHeader(_stream, _wfxOut, _startStreamPosition, 0);
}
_bytesWritten = 0;
_aborted = false;
_deviceOpen = true;
}
