/* IDirectMusic8 Implementation
 *
 * Copyright (C) 2003-2004 Rok Mandeljc
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Library General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 */
#include "dmusic_private.h"

WINE_DEFAULT_DEBUG_CHANNEL(dmusic);

/* IDirectMusic8Impl IUnknown part: */
static HRESULT WINAPI IDirectMusic8Impl_QueryInterface (LPDIRECTMUSIC8 iface, REFIID riid, LPVOID *ppobj) {
	IDirectMusic8Impl *This = (IDirectMusic8Impl *)iface;
	TRACE("(%p, %s, %p)\n", This, debugstr_dmguid(riid), ppobj);

	if (IsEqualIID (riid, &IID_IUnknown) || 
	    IsEqualIID (riid, &IID_IDirectMusic) ||
	    IsEqualIID (riid, &IID_IDirectMusic2) ||
	    IsEqualIID (riid, &IID_IDirectMusic8)) {
		IUnknown_AddRef(iface);
		*ppobj = This;
		return S_OK;
	}

	WARN("(%p, %s, %p): not found\n", This, debugstr_dmguid(riid), ppobj);
	return E_NOINTERFACE;
}

static ULONG WINAPI IDirectMusic8Impl_AddRef (LPDIRECTMUSIC8 iface) {
	IDirectMusic8Impl *This = (IDirectMusic8Impl *)iface;
	ULONG refCount = InterlockedIncrement(&This->ref);

	TRACE("(%p)->(ref before=%u)\n", This, refCount - 1);

	DMUSIC_LockModule();

	return refCount;
}

static ULONG WINAPI IDirectMusic8Impl_Release (LPDIRECTMUSIC8 iface) {
	IDirectMusic8Impl *This = (IDirectMusic8Impl *)iface;
	ULONG refCount = InterlockedDecrement(&This->ref);

	TRACE("(%p)->(ref before=%u)\n", This, refCount + 1);

	if (!refCount) {
		HeapFree(GetProcessHeap(), 0, This);
	}

	DMUSIC_UnlockModule();
	
	return refCount;
}

/* IDirectMusic8Impl IDirectMusic part: */
static HRESULT WINAPI IDirectMusic8Impl_EnumPort(LPDIRECTMUSIC8 iface, DWORD dwIndex, LPDMUS_PORTCAPS pPortCaps) {
	IDirectMusic8Impl *This = (IDirectMusic8Impl *)iface;
	TRACE("(%p, %d, %p)\n", This, dwIndex, pPortCaps);
	if (NULL == pPortCaps) { return E_POINTER; }
	/* i guess the first port shown is always software synthesizer */
	if (dwIndex == 0) 
	{
		IDirectMusicSynth8* synth;
		TRACE("enumerating 'Microsoft Software Synthesizer' port\n");
		CoCreateInstance (&CLSID_DirectMusicSynth, NULL, CLSCTX_INPROC_SERVER, &IID_IDirectMusicSynth8, (void**)&synth);
		IDirectMusicSynth8_GetPortCaps (synth, pPortCaps);
		IDirectMusicSynth8_Release (synth);
		return S_OK;
	}

/* it seems that the rest of devices are obtained thru dmusic32.EnumLegacyDevices...*sigh*...which is undocumented*/
#if 0
	int numMIDI = midiOutGetNumDevs();
	int numWAVE = waveOutGetNumDevs();
	int i;
	/* then return digital sound ports */
	for (i = 1; i <= numWAVE; i++)
	{
		TRACE("enumerating 'digital sound' ports\n");	
		if (i == dwIndex)
		{
			DirectSoundEnumerateA((LPDSENUMCALLBACKA) register_waveport, (VOID*) pPortCaps);
			return S_OK;	
		}
	}
	/* finally, list all *real* MIDI ports*/
	for (i = numWAVE + 1; i <= numWAVE + numMIDI; i++) 
	{
		TRACE("enumerating 'real MIDI' ports\n");		
		if (i == dwIndex)
			FIXME("Found MIDI port, but *real* MIDI ports not supported yet\n");
	}
#endif	
	return S_FALSE;
}

static HRESULT WINAPI IDirectMusic8Impl_CreateMusicBuffer (LPDIRECTMUSIC8 iface, LPDMUS_BUFFERDESC pBufferDesc, LPDIRECTMUSICBUFFER** ppBuffer, LPUNKNOWN pUnkOuter) {
	IDirectMusic8Impl *This = (IDirectMusic8Impl *)iface;
	FIXME("(%p, %p, %p, %p): stub\n", This, pBufferDesc, ppBuffer, pUnkOuter);
	return S_OK;
}

static HRESULT WINAPI IDirectMusic8Impl_CreatePort (LPDIRECTMUSIC8 iface, REFCLSID rclsidPort, LPDMUS_PORTPARAMS pPortParams, LPDIRECTMUSICPORT* ppPort, LPUNKNOWN pUnkOuter) {
	IDirectMusic8Impl *This = (IDirectMusic8Impl *)iface;
	int i/*, j*/;
	DMUS_PORTCAPS PortCaps;
	IDirectMusicPort* pNewPort = NULL;
	HRESULT hr = E_FAIL;

	TRACE("(%p, %s, %p, %p, %p)\n", This, debugstr_dmguid(rclsidPort), pPortParams, ppPort, pUnkOuter);	
	ZeroMemory(&PortCaps, sizeof(DMUS_PORTCAPS));
	PortCaps.dwSize = sizeof(DMUS_PORTCAPS);

	for (i = 0; S_FALSE != IDirectMusic8Impl_EnumPort(iface, i, &PortCaps); i++) {				
		if (IsEqualCLSID (rclsidPort, &PortCaps.guidPort)) {
			hr = DMUSIC_CreateDirectMusicPortImpl(&IID_IDirectMusicPort, (LPVOID*) &pNewPort, (LPUNKNOWN) This, pPortParams, &PortCaps);
			if (FAILED(hr)) {
			  *ppPort = (LPDIRECTMUSICPORT) NULL;
			  return hr;
			}
			This->nrofports++;
			if (!This->ppPorts) This->ppPorts = HeapAlloc(GetProcessHeap(), 0, sizeof(LPDIRECTMUSICPORT) * This->nrofports);
			else This->ppPorts = HeapReAlloc(GetProcessHeap(), 0, This->ppPorts, sizeof(LPDIRECTMUSICPORT) * This->nrofports); 			
			This->ppPorts[This->nrofports - 1] = pNewPort;
			*ppPort = (LPDIRECTMUSICPORT) pNewPort;
			return S_OK;			
		}
	}
	/* FIXME: place correct error here */
	return E_NOINTERFACE;
}

static HRESULT WINAPI IDirectMusic8Impl_EnumMasterClock (LPDIRECTMUSIC8 iface, DWORD dwIndex, LPDMUS_CLOCKINFO lpClockInfo) {
	IDirectMusic8Impl *This = (IDirectMusic8Impl *)iface;
	FIXME("(%p, %d, %p): stub\n", This, dwIndex, lpClockInfo);
	return S_FALSE;
}

static HRESULT WINAPI IDirectMusic8Impl_GetMasterClock (LPDIRECTMUSIC8 iface, LPGUID pguidClock, IReferenceClock** ppReferenceClock) {
	IDirectMusic8Impl *This = (IDirectMusic8Impl *)iface;

	TRACE("(%p, %p, %p)\n", This, pguidClock, ppReferenceClock);
	if (pguidClock)
		*pguidClock = This->pMasterClock->pClockInfo.guidClock;
	if(ppReferenceClock)
		*ppReferenceClock = (IReferenceClock *)This->pMasterClock;

	return S_OK;
}

static HRESULT WINAPI IDirectMusic8Impl_SetMasterClock (LPDIRECTMUSIC8 iface, REFGUID rguidClock) {
	IDirectMusic8Impl *This = (IDirectMusic8Impl *)iface;
	FIXME("(%p, %s): stub\n", This, debugstr_dmguid(rguidClock));
	return S_OK;
}

static HRESULT WINAPI IDirectMusic8Impl_Activate (LPDIRECTMUSIC8 iface, BOOL fEnable) {
	IDirectMusic8Impl *This = (IDirectMusic8Impl *)iface;
	int i;
	
	FIXME("(%p, %d): stub\n", This, fEnable);
	for (i = 0; i < This->nrofports; i++) {
            IDirectMusicPortImpl_Activate(This->ppPorts[i], fEnable);
	}
	
	return S_OK;
}

static HRESULT WINAPI IDirectMusic8Impl_GetDefaultPort (LPDIRECTMUSIC8 iface, LPGUID pguidPort) {
	IDirectMusic8Impl *This = (IDirectMusic8Impl *)iface;
	HKEY hkGUID;
	DWORD returnTypeGUID, sizeOfReturnBuffer = 50;
	char returnBuffer[51];
	GUID defaultPortGUID;
	WCHAR buff[51];

	TRACE("(%p, %p)\n", This, pguidPort);
	if ((RegOpenKeyExA(HKEY_LOCAL_MACHINE, "Software\\Microsoft\\DirectMusic\\Defaults" , 0, KEY_READ, &hkGUID) != ERROR_SUCCESS) || 
	    (RegQueryValueExA(hkGUID, "DefaultOutputPort", NULL, &returnTypeGUID, (LPBYTE)returnBuffer, &sizeOfReturnBuffer) != ERROR_SUCCESS))
	{
		WARN(": registry entry missing\n" );
		*pguidPort = CLSID_DirectMusicSynth;
		return S_OK;
	}
	/* FIXME: Check return types to ensure we're interpreting data right */
	MultiByteToWideChar(CP_ACP, 0, returnBuffer, -1, buff, sizeof(buff) / sizeof(WCHAR));
	CLSIDFromString(buff, &defaultPortGUID);
	*pguidPort = defaultPortGUID;
	
	return S_OK;
}

static HRESULT WINAPI IDirectMusic8Impl_SetDirectSound (LPDIRECTMUSIC8 iface, LPDIRECTSOUND pDirectSound, HWND hWnd) {
	IDirectMusic8Impl *This = (IDirectMusic8Impl *)iface;
	FIXME("(%p, %p, %p): stub\n", This, pDirectSound, hWnd);
	return S_OK;
}

static HRESULT WINAPI IDirectMusic8Impl_SetExternalMasterClock (LPDIRECTMUSIC8 iface, IReferenceClock* pClock) {
	IDirectMusic8Impl *This = (IDirectMusic8Impl *)iface;
	FIXME("(%p, %p): stub\n", This, pClock);
	return S_OK;
}

static const IDirectMusic8Vtbl DirectMusic8_Vtbl = {
	IDirectMusic8Impl_QueryInterface,
	IDirectMusic8Impl_AddRef,
	IDirectMusic8Impl_Release,
	IDirectMusic8Impl_EnumPort,
	IDirectMusic8Impl_CreateMusicBuffer,
	IDirectMusic8Impl_CreatePort,
	IDirectMusic8Impl_EnumMasterClock,
	IDirectMusic8Impl_GetMasterClock,
	IDirectMusic8Impl_SetMasterClock,
	IDirectMusic8Impl_Activate,
	IDirectMusic8Impl_GetDefaultPort,
	IDirectMusic8Impl_SetDirectSound,
	IDirectMusic8Impl_SetExternalMasterClock
};

/* helper stuff */
void register_waveport (LPGUID lpGUID, LPCSTR lpszDesc, LPCSTR lpszDrvName, LPVOID lpContext) {
	LPDMUS_PORTCAPS pPortCaps = (LPDMUS_PORTCAPS)lpContext;
	
	pPortCaps->dwSize = sizeof(DMUS_PORTCAPS);
	pPortCaps->dwFlags = DMUS_PC_DLS | DMUS_PC_SOFTWARESYNTH | DMUS_PC_DIRECTSOUND | DMUS_PC_DLS2 | DMUS_PC_AUDIOPATH | DMUS_PC_WAVE;
	pPortCaps->guidPort = *lpGUID;
	pPortCaps->dwClass = DMUS_PC_OUTPUTCLASS;
	pPortCaps->dwType = DMUS_PORT_WINMM_DRIVER;
	pPortCaps->dwMemorySize = DMUS_PC_SYSTEMMEMORY;
	pPortCaps->dwMaxChannelGroups = 2;
	pPortCaps->dwMaxVoices = -1;
	pPortCaps->dwMaxAudioChannels = -1;
	pPortCaps->dwEffectFlags = DMUS_EFFECT_REVERB | DMUS_EFFECT_CHORUS | DMUS_EFFECT_DELAY;
	MultiByteToWideChar (CP_ACP, 0, lpszDesc, -1, pPortCaps->wszDescription, sizeof(pPortCaps->wszDescription)/sizeof(WCHAR));
}

/* for ClassFactory */
HRESULT WINAPI DMUSIC_CreateDirectMusicImpl (LPCGUID lpcGUID, LPVOID* ppobj, LPUNKNOWN pUnkOuter) {
	IDirectMusic8Impl *dmusic;

	TRACE("(%p,%p,%p)\n",lpcGUID, ppobj, pUnkOuter);

	dmusic = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirectMusic8Impl));
	if (NULL == dmusic) {
		*ppobj = (LPDIRECTMUSIC8) NULL;
		return E_OUTOFMEMORY;
	}
	dmusic->lpVtbl = &DirectMusic8_Vtbl;
	dmusic->ref = 0; /* will be inited with QueryInterface */
	dmusic->pMasterClock = NULL;
	dmusic->ppPorts = NULL;
	dmusic->nrofports = 0;
	DMUSIC_CreateReferenceClockImpl (&IID_IReferenceClock, (LPVOID*)&dmusic->pMasterClock, NULL);
	
	return IDirectMusic8Impl_QueryInterface ((LPDIRECTMUSIC8)dmusic, lpcGUID, ppobj);
}