rez_xaudio_test.c

// build with: x86_64-w64-mingw32-gcc -o rez_xaudio_test.exe rez_xaudio_test.c -lole32

#include <stdio.h>

#define COBJMACROS
#include <initguid.h>
#include <windows.h>
#include <xaudio2.h>
#include <xaudio2fx.h>
#include <xapofx.h>

void printf_guid(GUID *guid) {
    printf("Guid = {%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
      guid->Data1, guid->Data2, guid->Data3,
      guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3],
      guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7]);
}

static void WINAPI ECB_OnProcessingPassStart(IXAudio2EngineCallback *This)
{
    printf("callback: OnProcessingPassStart\n");
}

static void WINAPI ECB_OnProcessingPassEnd(IXAudio2EngineCallback *This)
{
    printf("callback: OnProcessingPassEnd\n");
}

static void WINAPI ECB_OnCriticalError(IXAudio2EngineCallback *This, HRESULT Error)
{
    printf("callback: OnCriticalError err %lx\n", Error);
}

static IXAudio2EngineCallbackVtbl ecb_vtbl = {
    ECB_OnProcessingPassStart,
    ECB_OnProcessingPassEnd,
    ECB_OnCriticalError
};

static IXAudio2EngineCallback ecb = { &ecb_vtbl };

int main()
{
	HRESULT hr;
	CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);

	HANDLE hXAudio2_7 = LoadLibraryA("XAudio2_7.dll");

	IXAudio27 *xa27;
	CoCreateInstance(&CLSID_XAudio27, NULL, 1, &IID_IXAudio27, (void **)&xa27);

	hr = IXAudio27_Initialize(xa27, 0, XAUDIO2_ANY_PROCESSOR);

	UINT32 deviceCount;
	hr = IXAudio27_GetDeviceCount(xa27, &deviceCount);
	printf("device count: %u\n", deviceCount);

	for (UINT32 i = 0; i < deviceCount; i++)
	{
		XAUDIO2_DEVICE_DETAILS details;
		hr = IXAudio27_GetDeviceDetails(xa27, i, &details);
		printf("device %u:\n", i);
		printf("\tID: %ls\n", details.DeviceID);
		printf("\tname: %ls\n", details.DisplayName);
		printf("\trole: %d\n", details.Role);
		{
		printf("\tmixformat: tag %x channels %d samplespersec %ld avgbytespersec %ld blockalign %d bitspersample %d cbsize %d\n",
		details.OutputFormat.Format.wFormatTag, details.OutputFormat.Format.nChannels, details.OutputFormat.Format.nSamplesPerSec, details.OutputFormat.Format.nAvgBytesPerSec, details.OutputFormat.Format.nBlockAlign, details.OutputFormat.Format.wBitsPerSample, details.OutputFormat.Format.cbSize
		);
		printf("\twfx samples %x channelmask %lx subformat ", details.OutputFormat.Samples.wValidBitsPerSample, details.OutputFormat.dwChannelMask);
		printf_guid(&details.OutputFormat.SubFormat);
		printf("\n");
		}
	}

	IXAudio2MasteringVoice *masteringvoice;
	hr = IXAudio27_CreateMasteringVoice(xa27, &masteringvoice, 2, 44100, 0, 0, NULL);

	IXAudio2SubmixVoice *submixvoice;
	hr = IXAudio27_CreateSubmixVoice(xa27, &submixvoice, 6, 44100, 0, 20, NULL, NULL);

	const float matrix[6*2] = {1.0};
	hr = IXAudio27SubmixVoice_SetOutputMatrix(submixvoice, (IXAudio2Voice*)masteringvoice, 6, 2, matrix, 0);

	hr = IXAudio27MasteringVoice_SetVolume(masteringvoice, 1.0, 0);

	hr = IXAudio27_RegisterForCallbacks(xa27, &ecb);

	IXAudio2SubmixVoice *submixvoice2;
	XAUDIO2_VOICE_SENDS sends;
	XAUDIO2_SEND_DESCRIPTOR send_desc;
	sends.SendCount = 1;
	sends.pSends = &send_desc;
	sends.pSends[0].Flags = 0;
	sends.pSends[0].pOutputVoice = (IXAudio2Voice*)submixvoice;

	hr = IXAudio27_CreateSubmixVoice(xa27, &submixvoice2, 6, 48000, 0, 2, &sends, NULL);
	hr = IXAudio27SubmixVoice_SetOutputMatrix(submixvoice2, (IXAudio2Voice*)submixvoice, 6, 6, matrix, 0);

	IXAudio2SubmixVoice *submixvoice3;
	hr = IXAudio27_CreateSubmixVoice(xa27, &submixvoice3, 6, 48000, XAUDIO2_VOICE_USEFILTER, 1, &sends, NULL);
	hr = IXAudio27SubmixVoice_SetOutputMatrix(submixvoice3, (IXAudio2Voice*)submixvoice, 6, 6, matrix, 0);

	IXAudio2SubmixVoice *submixvoice4;
	hr = IXAudio27_CreateSubmixVoice(xa27, &submixvoice4, 6, 48000, XAUDIO2_VOICE_USEFILTER, 1, &sends, NULL);
	hr = IXAudio27SubmixVoice_SetOutputMatrix(submixvoice4, (IXAudio2Voice*)submixvoice, 6, 6, matrix, 0);

	IUnknown *reverb_apo;	
	CoCreateInstance(&CLSID_AudioReverb27, NULL, CLSCTX_INPROC_SERVER, &IID_IUnknown, (void **)&reverb_apo);

        XAUDIO2_EFFECT_CHAIN effects;
	XAUDIO2_EFFECT_DESCRIPTOR eff_desc[2];
	effects.pEffectDescriptors = eff_desc;
	effects.EffectCount = 1;
	effects.pEffectDescriptors[0].pEffect = reverb_apo;
	effects.pEffectDescriptors[0].InitialState = TRUE;
	effects.pEffectDescriptors[0].OutputChannels = 6;

	/* this succeeds on Windows but fails with Wine/FAudio */
	hr = IXAudio27SubmixVoice_SetEffectChain(submixvoice4, &effects);
	printf("SetEffectChain hr 0x%lx\n", hr);

#if 0
	HRESULT (CDECL *pCreateFX)(REFCLSID,IUnknown**) = NULL;
	IUnknown *echo1, *echo2;
	HANDLE pXAPOFX1_5 = LoadLibraryA("xapofx1_5.dll");
	pCreateFX = (void*)GetProcAddress(pXAPOFX1_5, "CreateFX");

	pCreateFX(&CLSID_FXEcho27, &echo1);
	pCreateFX(&CLSID_FXEcho27, &echo2);

	effects.EffectCount = 2;
	effects.pEffectDescriptors[0].pEffect = echo1;
	effects.pEffectDescriptors[0].InitialState = TRUE;
	effects.pEffectDescriptors[0].OutputChannels = 6;
	effects.pEffectDescriptors[1].pEffect = echo2;
	effects.pEffectDescriptors[1].InitialState = TRUE;
	effects.pEffectDescriptors[1].OutputChannels = 6;
	hr = IXAudio27SubmixVoice_SetEffectChain(submixvoice3, &effects);
	printf("SetEffectChain hr %lx\n", hr);
#endif

	return 0;
}