Function ndspInitialize

libctru/source/ndsp/ndsp.c:233–299

}

static Result ndspInitialize(bool resume)
{
	Result rc;

	rc = svcCreateEvent(&irqEvent, RESET_STICKY);
	if (R_FAILED(rc)) goto _fail1;

	rc = DSP_RegisterInterruptEvents(irqEvent, DSP_INTERRUPT_PIPE, 2);
	if (R_FAILED(rc)) goto _fail2;

	rc = DSP_GetSemaphoreHandle(&dspSem);
	if (R_FAILED(rc)) goto _fail3;

	DSP_SetSemaphoreMask(0x2000);

	if (resume)
	{
		memcpy(ndspVars[5][0], dspVar5Backup, sizeof(dspVar5Backup));
		__dsb();
	}

	u16 val = resume ? 2 : 0;
	DSP_WriteProcessPipe(2, &val, 4);

	DSP_SetSemaphore(0x4000);
	ndspWaitForIrq(U64_MAX);

	DSP_ReadPipeIfPossible(2, 0, &val, sizeof(val), NULL);

	u16 vars[16];
	DSP_ReadPipeIfPossible(2, 0, vars, val*2, NULL);
	for (unsigned i = 0; i < val; i ++)
	{
		DSP_ConvertProcessAddressFromDspDram(vars[i],           (u32*)&ndspVars[i][0]);
		DSP_ConvertProcessAddressFromDspDram(vars[i] | 0x10000, (u32*)&ndspVars[i][1]);
	}

	DSP_SetSemaphore(0x4000);
	frameCount = 0;
	ndspFrameId = 4;
	ndspSetCounter(0, 4);
	ndspFrameId++;
	svcSignalEvent(dspSem);

	ndspBufferCurId = ndspFrameId & 1;
	ndspBufferId = ndspFrameId & 1;
	bDspReady = true;

	if (resume)
	{
		ndspiDirtyChn();
		ndspiUpdateChn();

		ndspDirtyMaster();
		ndspUpdateMaster();

		// TODO: force update effect params
	}