Method MixStreams

CrySoundSystem/MusicSystem.cpp:1136–1207

mix all streams in the play-list into pBuffer; mixlength is nSamples the data is processed before mixing if needed (eg. ramping) */

	the data is processed before mixing if needed (eg. ramping)
*/
void CMusicSystem::MixStreams(void *pBuffer, int nSamples)
{
	for (TPatternPlayInfoVecIt It=m_vecPlayingPatterns.begin();It!=m_vecPlayingPatterns.end();)
	{
		int nSamplesToRead=nSamples;
		SMusicPatternPlayInfo &PlayInfo=(*It);
		bool bStreamEnd=false;
		if (PlayInfo.eBlendType==EBlend_Stop)
		{
			bStreamEnd=true;
		}else
		{
			GUARD_HEAP; // AMD64 note: here was a Memory Corruption
			switch (PlayInfo.eBlendType)
			{
				case EBlend_ToEnd:
				{
					int nLength=PlayInfo.pPatternInstance->GetSamplesToEnd();
					if (nSamplesToRead>=nLength)
					{
						nSamplesToRead=nLength;
						bStreamEnd=true;
					}
					break;
				}
			}
			PlayInfo.pPatternInstance->GetPCMData((signed long*)m_pMixBuffer, nSamplesToRead);
      
			switch (PlayInfo.eBlendType)
			{
				case EBlend_FadeOut:
				{
					if (FadeStream(PlayInfo, (signed short*)m_pMixBuffer, nSamplesToRead))
						bStreamEnd=true;
					break;
				}
			}
			//const int nSize = 1024*1024*4;
			//static int arrBuffer[nSize];
			//memset (arrBuffer, 0xCE, sizeof(arrBuffer));
      //memcpy (pBuffer, m_pMixBuffer, nSamplesToRead*4);
      //memset(pBuffer, 0, nSamplesToRead*4);
			CS_DSP_MixBuffers(pBuffer, m_pMixBuffer, nSamplesToRead, m_nSampleRate, PlayInfo.pPatternInstance->GetPattern()->GetLayeringVolume(), 128, CS_16BITS | CS_STEREO);
/*
  signed short *destptr = (signed short *)pBuffer;
	signed int *srcptr = (signed int *)pBuffer;

	for (int count = 0; count < nSamplesToRead; count++)
	{
		signed int lval,rval;
		lval = *srcptr++;
		rval = *srcptr++;

		*destptr++ = (signed short)( lval < -32768 ? -32768 : lval > 32767 ? 32767 : lval);
		*destptr++ = (signed short)( rval < -32768 ? -32768 : rval > 32767 ? 32767 : rval);
  }
/**/