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ADDED stereo to surround upmixing (XAudio2)

This commit is contained in:
spacy51 2008-07-14 17:59:15 +00:00
parent d662882922
commit 31f1673d6d
1 changed files with 64 additions and 0 deletions
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64
src/win32/XAudio2.cpp
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@ -23,6 +23,7 @@
#define NBUFFERS 4
#define STEREO_UPMIXING
// MFC
#include "stdafx.h"
@ -216,6 +217,69 @@ bool XAudio2_Output::init()
return false;
}
#ifdef STEREO_UPMIXING
// set up stereo upmixing
XAUDIO2_DEVICE_DETAILS dd;
ZeroMemory( &dd, sizeof( dd ) );
hr = xaud->GetDeviceDetails( 0, &dd );
ASSERT( hr == S_OK );
float *matrix = NULL;
matrix = (float*)malloc( sizeof( float ) * 2 * dd.OutputFormat.Format.nChannels );
switch( dd.OutputFormat.Format.nChannels ) {
case 4: // 4.0
//Speaker \ Left Source Right Source
/*Front L*/ matrix[0] = 1.0000f; matrix[1] = 0.0000f;
/*Front R*/ matrix[2] = 0.0000f; matrix[3] = 1.0000f;
/*Back L*/ matrix[4] = 1.0000f; matrix[5] = 0.0000f;
/*Back R*/ matrix[6] = 0.0000f; matrix[7] = 1.0000f;
break;
case 5: // 5.0
//Speaker \ Left Source Right Source
/*Front L*/ matrix[0] = 1.0000f; matrix[1] = 0.0000f;
/*Front R*/ matrix[2] = 0.0000f; matrix[3] = 1.0000f;
/*Front C*/ matrix[4] = 0.7071f; matrix[5] = 0.7071f;
/*Side L*/ matrix[6] = 1.0000f; matrix[7] = 0.0000f;
/*Side R*/ matrix[8] = 0.0000f; matrix[9] = 1.0000f;
break;
case 6: // 5.1
//Speaker \ Left Source Right Source
/*Front L*/ matrix[0] = 1.0000f; matrix[1] = 0.0000f;
/*Front R*/ matrix[2] = 0.0000f; matrix[3] = 1.0000f;
/*Front C*/ matrix[4] = 0.7071f; matrix[5] = 0.7071f;
/*LFE */ matrix[6] = 0.0000f; matrix[7] = 0.0000f;
/*Side L*/ matrix[8] = 1.0000f; matrix[9] = 0.0000f;
/*Side R*/ matrix[10] = 0.0000f; matrix[11] = 1.0000f;
break;
case 7: // 6.1
//Speaker \ Left Source Right Source
/*Front L*/ matrix[0] = 1.0000f; matrix[1] = 0.0000f;
/*Front R*/ matrix[2] = 0.0000f; matrix[3] = 1.0000f;
/*Front C*/ matrix[4] = 0.7071f; matrix[5] = 0.7071f;
/*LFE */ matrix[6] = 0.0000f; matrix[7] = 0.0000f;
/*Side L*/ matrix[8] = 1.0000f; matrix[9] = 0.0000f;
/*Side R*/ matrix[10] = 0.0000f; matrix[11] = 1.0000f;
/*Back C*/ matrix[12] = 0.7071f; matrix[13] = 0.7071f;
break;
case 8: // 7.1
//Speaker \ Left Source Right Source
/*Front L*/ matrix[0] = 1.0000f; matrix[1] = 0.0000f;
/*Front R*/ matrix[2] = 0.0000f; matrix[3] = 1.0000f;
/*Front C*/ matrix[4] = 0.7071f; matrix[5] = 0.7071f;
/*LFE */ matrix[6] = 0.0000f; matrix[7] = 0.0000f;
/*Back L*/ matrix[8] = 1.0000f; matrix[9] = 0.0000f;
/*Back R*/ matrix[10] = 0.0000f; matrix[11] = 1.0000f;
/*Side L*/ matrix[12] = 1.0000f; matrix[13] = 0.0000f;
/*Side R*/ matrix[14] = 0.0000f; matrix[15] = 1.0000f;
break;
}
hr = sVoice->SetOutputMatrix( NULL, 2, dd.OutputFormat.Format.nChannels, matrix );
ASSERT( hr == S_OK );
free( matrix );
matrix = NULL;
#endif
hr = sVoice->Start( 0 );
ASSERT( hr == S_OK );
playing = true;