/*
* play
*
* Function uses win32 to play the audio imported/recored by the progam
*
* Parameter:
* RecordDialog.AudioPlayBackDeleagate waveOut
*
* return void
*/
private void play(RecordDialog.AudioPlayBackDelegate waveOut)
{
handle = new IntPtr();
WAVEFORMAT format;
format.wFormatTag = (ushort)wave.fmtCode;
format.nChannels = (ushort)wave.channels;
format.nSamplesPerSec = (ushort)wave.sampleRate;
format.wBitsPerSample = (ushort)wave.bitDepth;
format.nBlockAlign = (ushort)wave.fmtBlockAlign;
format.nAvgBytesPerSec = (ushort)wave.fmtAvgBPS;
format.cbSize = 0;
int i = -1;
i = waveOutOpen(ref handle, 4294967295, ref format, Marshal.GetFunctionPointerForDelegate(waveOut), 0, RecordDialog.CALLBACK_FUNCTION);
if (i != 0)
{
this.Text = "Error: waveOutOpen";
return;
}
i = waveOutPrepareHeader(handle, ref pWaveHdr, Convert.ToUInt32(Marshal.SizeOf(pWaveHdr)));
if (i != 0)
{
return;
}
int ii = waveOutWrite(handle, ref pWaveHdr, Convert.ToUInt32(Marshal.SizeOf(pWaveHdr)));
if (ii != 0)
{
return;
}
}
/*
* PlayBtn_Click
*
* Listener for the Play button on the main interface
*
* Parameter:
* sender
* e
*
* return void
*/
private void PlayBtn_Click(object sender, EventArgs e)
{
// C# code for play back in the main form
/*byte[] tmp;
*
* if(player == null)
* {
* if(wave == null)
* {
* return;
* }
*
* wave.rebuildWav(left);
* tmp = wave.playWav();
*
* if(tmp != null)
* {
* using (System.IO.MemoryStream ms = new System.IO.MemoryStream(tmp))
* {
* player = new System.Media.SoundPlayer(ms);
* player.Play();
* }
* }
* } else
* {
* wave.rebuildWav(left);
* tmp = wave.playWav();
*
* if (tmp != null)
* {
* using (System.IO.MemoryStream ms = new System.IO.MemoryStream(tmp))
* {
* player = new System.Media.SoundPlayer(ms);
* player.Play();
* }
* }
* }*/
// win32 code for playback in the main form
if (wave != null)
{
wave.rebuildWav(left, right);
waveOut = this.callbackWaveOut;
play(waveOut);
}
}
