C++ (Cpp) YMF278BRender Examples

Example #1

File: burn_ymf278b.cpp Project: SiN13/pifba

void BurnYMF278BUpdate(int nSegmentEnd)
{
	short* pSoundBuf = pBurnSoundOut;
	int nSegmentLength = nSegmentEnd;

//	bprintf(PRINT_NORMAL, _T("    YMF278B render %6i -> %6i\n"), nYMF278BPosition, nSegmentEnd);

	if (nBurnSoundRate == 0) {
		return;
	}

	if (nSegmentEnd < nYMF278BPosition) {
		nSegmentEnd = nYMF278BPosition;
	}

	if (nSegmentLength > nBurnSoundLen) {
		nSegmentLength = nBurnSoundLen;
	}

	YMF278BRender(nSegmentEnd);

	pYMF278BBuffer[0] = pBuffer + 0 * 4096 + 4;
	pYMF278BBuffer[1] = pBuffer + 1 * 4096 + 4;

	for (int i = nFractionalPosition; i < nSegmentLength; i++) {
		pSoundBuf[(i << 1) + 0] = pYMF278BBuffer[0][i];
		pSoundBuf[(i << 1) + 1] = pYMF278BBuffer[1][i];
	}

	nFractionalPosition = nSegmentLength;

	if (nSegmentEnd >= nBurnSoundLen) {
		int nExtraSamples = nSegmentEnd - nBurnSoundLen;

		for (int i = 0; i < nExtraSamples; i++) {
			pYMF278BBuffer[0][i] = pYMF278BBuffer[0][nBurnSoundLen + i];
			pYMF278BBuffer[1][i] = pYMF278BBuffer[1][nBurnSoundLen + i];
		}

		nFractionalPosition = 0;

		nYMF278BPosition = nExtraSamples;

	}
}

Example #2

File: burn_ymf278b.cpp Project: Cpasjuste/libarcade

void BurnYMF278BUpdate(INT32 nSegmentEnd)
{
#if defined FBA_DEBUG
	if (!DebugSnd_YMF278BInitted) bprintf(PRINT_ERROR, _T("BurnYMF278BUpdate called without init\n"));
#endif

	INT16* pSoundBuf = pBurnSoundOut;
	INT32 nSegmentLength = nSegmentEnd;

//	bprintf(PRINT_NORMAL, _T("    YMF278B render %6i -> %6i\n"), nYMF278BPosition, nSegmentEnd);

	if (nBurnSoundRate == 0) {
		return;
	}

	if (nSegmentEnd < nYMF278BPosition) {
		nSegmentEnd = nYMF278BPosition;
	}

	if (nSegmentLength > nBurnSoundLen) {
		nSegmentLength = nBurnSoundLen;
	}

	YMF278BRender(nSegmentEnd);

	pYMF278BBuffer[0] = pBuffer + 0 * 4096 + 4;
	pYMF278BBuffer[1] = pBuffer + 1 * 4096 + 4;

	for (INT32 n = nFractionalPosition; n < nSegmentLength; n++) {
		INT32 nLeftSample = 0, nRightSample = 0;

		if ((YMF278BRouteDirs[BURN_SND_YMF278B_YMF278B_ROUTE_1] & BURN_SND_ROUTE_LEFT) == BURN_SND_ROUTE_LEFT) {
			nLeftSample += (INT32)(pYMF278BBuffer[0][n] * YMF278BVolumes[BURN_SND_YMF278B_YMF278B_ROUTE_1]);
		}
		if ((YMF278BRouteDirs[BURN_SND_YMF278B_YMF278B_ROUTE_1] & BURN_SND_ROUTE_RIGHT) == BURN_SND_ROUTE_RIGHT) {
			nRightSample += (INT32)(pYMF278BBuffer[0][n] * YMF278BVolumes[BURN_SND_YMF278B_YMF278B_ROUTE_1]);
		}
		
		if ((YMF278BRouteDirs[BURN_SND_YMF278B_YMF278B_ROUTE_2] & BURN_SND_ROUTE_LEFT) == BURN_SND_ROUTE_LEFT) {
			nLeftSample += (INT32)(pYMF278BBuffer[1][n] * YMF278BVolumes[BURN_SND_YMF278B_YMF278B_ROUTE_2]);
		}
		if ((YMF278BRouteDirs[BURN_SND_YMF278B_YMF278B_ROUTE_2] & BURN_SND_ROUTE_RIGHT) == BURN_SND_ROUTE_RIGHT) {
			nRightSample += (INT32)(pYMF278BBuffer[1][n] * YMF278BVolumes[BURN_SND_YMF278B_YMF278B_ROUTE_2]);
		}
		
		nLeftSample = BURN_SND_CLIP(nLeftSample);
		nRightSample = BURN_SND_CLIP(nRightSample);
			
		pSoundBuf[(n << 1) + 0] = nLeftSample;
		pSoundBuf[(n << 1) + 1] = nRightSample;
	}

	nFractionalPosition = nSegmentLength;

	if (nSegmentEnd >= nBurnSoundLen) {
		INT32 nExtraSamples = nSegmentEnd - nBurnSoundLen;

		for (INT32 i = 0; i < nExtraSamples; i++) {
			pYMF278BBuffer[0][i] = pYMF278BBuffer[0][nBurnSoundLen + i];
			pYMF278BBuffer[1][i] = pYMF278BBuffer[1][nBurnSoundLen + i];
		}

		nFractionalPosition = 0;

		nYMF278BPosition = nExtraSamples;

	}
}