Method MixAllAndCopyToRingBuffer

source/MockingboardCardManager.cpp:390–467

}

void MockingboardCardManager::MixAllAndCopyToRingBuffer(UINT nNumSamples)
{
//	const double fAttenuation = g_bPhasorEnable ? 2.0 / 3.0 : 1.0;
	const double fAttenuation = true ? 2.0 / 3.0 : 1.0;

	short** slotAYVoiceBuffers[NUM_SLOTS] = {0};

	for (UINT slot = SLOT0; slot < NUM_SLOTS; slot++)
	{
		if (IsMockingboard(slot))
			slotAYVoiceBuffers[slot] = dynamic_cast<MockingboardCard&>(GetCardMgr().GetRef(slot)).GetVoiceBuffers();
	}

	for (UINT i = 0; i < nNumSamples; i++)
	{
		// Mockingboard stereo (all voices on an AY8910 wire-or'ed together)
		// L = Address.b7=0, R = Address.b7=1
		int nDataL = 0, nDataR = 0;

		for (UINT slot = SLOT0; slot < NUM_SLOTS; slot++)
		{
			if (!slotAYVoiceBuffers[slot])
				continue;

			for (UINT j = 0; j < NUM_VOICES_PER_AY8913; j++)
			{
				short** ppAYVoiceBuffer = slotAYVoiceBuffers[slot];

				// Regular MB-C AY's
				nDataL += (int)((double)ppAYVoiceBuffer[0 * NUM_VOICES_PER_AY8913 + j][i] * fAttenuation);
				nDataR += (int)((double)ppAYVoiceBuffer[2 * NUM_VOICES_PER_AY8913 + j][i] * fAttenuation);

				// Extra Phasor AY's
				nDataL += (int)((double)ppAYVoiceBuffer[1 * NUM_VOICES_PER_AY8913 + j][i] * fAttenuation);
				nDataR += (int)((double)ppAYVoiceBuffer[3 * NUM_VOICES_PER_AY8913 + j][i] * fAttenuation);
			}
		}

		// Cap the superpositioned output
		if (nDataL < WAVE_DATA_MIN)
			nDataL = WAVE_DATA_MIN;
		else if (nDataL > WAVE_DATA_MAX)
			nDataL = WAVE_DATA_MAX;

		if (nDataR < WAVE_DATA_MIN)
			nDataR = WAVE_DATA_MIN;
		else if (nDataR > WAVE_DATA_MAX)
			nDataR = WAVE_DATA_MAX;

		m_mixBuffer[i * MockingboardCard::NUM_MB_CHANNELS + 0] = (short)nDataL;	// L
		m_mixBuffer[i * MockingboardCard::NUM_MB_CHANNELS + 1] = (short)nDataR;	// R
	}

	//

	DWORD dwDSLockedBufferSize0, dwDSLockedBufferSize1;
	SHORT* pDSLockedBuffer0, * pDSLockedBuffer1;