truelight@0: /*********************************************************************
truelight@0:  * OpenTTD: An Open Source Transport Tycoon Deluxe clone             *
truelight@0:  * Copyright (c) 2002-2004 OpenTTD Developers. All Rights Reserved.  *
truelight@0:  *                                                                   *
truelight@0:  * Web site: http://openttd.sourceforge.net/                         *
truelight@0:  *********************************************************************/
truelight@0: 
truelight@0: /*
truelight@0:  * This program is free software; you can redistribute it and/or modify
truelight@0:  * it under the terms of the GNU General Public License as published by
truelight@0:  * the Free Software Foundation; either version 2 of the License, or
truelight@0:  * (at your option) any later version.
truelight@0:  *
truelight@0:  * This program is distributed in the hope that it will be useful,
truelight@0:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
truelight@0:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
truelight@0:  * GNU General Public License for more details.
truelight@0:  *
truelight@0:  * You should have received a copy of the GNU General Public License
truelight@0:  * along with this program; if not, write to the Free Software
truelight@0:  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
truelight@0:  */
truelight@0: 
truelight@0: /* DirectMusic driver for Win32 */
truelight@0: /* Based on dxmci from TTDPatch */
truelight@0: 
truelight@0: #include "stdafx.h"
truelight@0: 
truelight@0: #ifdef WIN32_ENABLE_DIRECTMUSIC_SUPPORT
truelight@0: 
truelight@0: // for gcc, the GUIDs are available in a library instead
truelight@0: #ifndef __GNUC__
truelight@0: #define INITGUID
truelight@0: #endif
truelight@0: 
truelight@0: #ifdef __cplusplus
truelight@0: 	extern "C" {
truelight@0: #endif
truelight@0: 
truelight@0: #include "ttd.h"
truelight@0: #include "sound.h"
truelight@0: #include "hal.h"
truelight@0: 
truelight@0: #ifdef __cplusplus
truelight@0: 	}
truelight@0: #endif
truelight@0: 
truelight@0: #include <windows.h>
truelight@0: #include <stdio.h>
truelight@0: 
truelight@0: #include <dmksctrl.h>
truelight@0: #include <dmusici.h>
truelight@0: #include <dmusicc.h>
truelight@0: #include <dmusicf.h>
truelight@0: 
truelight@0: #define VARIANT int
truelight@0: 
truelight@0: #define MSGBOX(output)	DEBUG(misc, 0) ("DirectMusic driver: %s\n", output); //MessageBox(NULL, output, "dxmci",MB_OK);
truelight@0: #define MULTI_TO_WIDE( x,y )  MultiByteToWideChar( CP_ACP,MB_PRECOMPOSED, y,-1,x,_MAX_PATH);
truelight@0: 
truelight@0: // the performance object controls manipulation of  the segments
truelight@0: IDirectMusicPerformance *performance = NULL;
truelight@0: 
truelight@0: // the segment object is where the MIDI data is stored for playback
truelight@0: IDirectMusicSegment *segment = NULL;
truelight@0: 
truelight@0: // the loader bject can load many types of DMusic related files
truelight@193: IDirectMusicLoader *loader = NULL;
truelight@0: 
truelight@0: // whether we've initialized COM or not (when deciding whether to shut down)
truelight@0: int COMInitialized = 0;
truelight@0: 
truelight@0: 
truelight@0: extern "C" bool LoadLibraryList(void **proc, const char *dll);
truelight@0: 
truelight@0: // Use lazy linking
truelight@0: struct ProcPtrs {
truelight@0: 	unsigned long (WINAPI *CoCreateInstance)(REFCLSID rclsid, LPUNKNOWN pUnkOuter, DWORD dwClsContext, REFIID riid, LPVOID * ppv);
truelight@0: 	HRESULT (WINAPI *CoInitialize)(  LPVOID pvReserved );
truelight@0: 	void (WINAPI *CoUninitialize)( );
truelight@0: };
truelight@0: 
truelight@0: #define M(x) x "\0"
truelight@193: static const char ole_files[] =
truelight@0: 	M("ole32.dll")
truelight@0: 	M("CoCreateInstance")
truelight@0: 	M("CoInitialize")
truelight@0: 	M("CoUninitialize")
truelight@0: 	M("")
truelight@0: ;
truelight@0: #undef M
truelight@0: 
truelight@0: 
truelight@0: static ProcPtrs _proc;
truelight@0: 
truelight@0: static bool LoadOleDLL()
truelight@0: {
truelight@193: 	if (_proc.CoCreateInstance != NULL)
truelight@0: 		return true;
truelight@0: 	if (!LoadLibraryList((void**)&_proc, ole_files))
truelight@0: 		return false;
truelight@0: 	return true;
truelight@0: }
truelight@0: 
truelight@0: 
truelight@0: #ifdef __cplusplus
truelight@0: extern "C" {
truelight@0: #endif
truelight@0: 
truelight@0: // Initialize COM and DirectMusic
truelight@0: bool InitDirectMusic (void)
truelight@0: {
truelight@0: 	if (NULL != performance)
truelight@0: 		return true;
truelight@0: 
truelight@0: 	// Initialize COM
truelight@0: 	if (!COMInitialized) {
truelight@0: 		if (!LoadOleDLL()) {
truelight@0: 			MSGBOX("ole32.dll load failed");
truelight@0: 			return false;
truelight@0: 		}
truelight@0: 
truelight@0: 		_proc.CoInitialize(NULL);
truelight@0: 		COMInitialized = 1;
truelight@0: 	}
truelight@0: 
truelight@0: 	// Create the performance object via CoCreateInstance
truelight@0: 	if (FAILED(_proc.CoCreateInstance(
truelight@0: 			(REFCLSID)CLSID_DirectMusicPerformance,
truelight@0: 			NULL,
truelight@0: 			CLSCTX_INPROC,
truelight@0: 			(REFIID)IID_IDirectMusicPerformance,
truelight@0: 			(LPVOID *)&performance))) {
truelight@0: 		MSGBOX ("Failed to create the performance object");
truelight@0: 		return false;
truelight@0: 	}
truelight@0: 
truelight@0: 	// Initialize it
truelight@0: 	if (FAILED(performance->Init(NULL, NULL, NULL))) {
truelight@0: 		MSGBOX("Failed to initialize performance object");
truelight@0: 		return false;
truelight@0: 	}
truelight@0: 
truelight@0: 	// Choose default Windows synth
truelight@0: 	if (FAILED(performance->AddPort (NULL))) {
truelight@0: 		MSGBOX("AddPort failed");
truelight@0: 		return false;
truelight@0: 	}
truelight@0: 
truelight@0: 	// now we'll create the loader object. This will be used to load the
truelight@0: 	// midi file for our demo. Again, we need to use CoCreateInstance
truelight@0: 	// and pass the appropriate ID parameters
truelight@0: 	if (FAILED(_proc.CoCreateInstance((REFCLSID)CLSID_DirectMusicLoader,
truelight@193: 			NULL, CLSCTX_INPROC,
truelight@0: 			(REFIID)IID_IDirectMusicLoader,
truelight@0: 			(LPVOID *)&loader))) {
truelight@0: 		MSGBOX("Failed to create loader object");
truelight@0: 		return false;
truelight@0: 	}
truelight@0: 
truelight@0: 	// that's it for initialization. If we made it this far we
truelight@0: 	// were successful.
truelight@0: 	return true;
truelight@0: }
truelight@0: 
truelight@193: // Releases memory used by all of the initialized
truelight@0: // DirectMusic objects in the program
truelight@0: void ReleaseSegment (void)
truelight@0: {
truelight@0: 	if (NULL != segment) {
truelight@0: 		segment->Release ();
truelight@0: 		segment = NULL;
truelight@0: 	}
truelight@0: }
truelight@0: void ShutdownDirectMusic (void)
truelight@0: {
truelight@193: 	// release everything but the segment, which the performance
truelight@193: 	// will release automatically (and it'll crash if it's been
truelight@0: 	// released already)
truelight@0: 
truelight@0: 	if (NULL != loader) {
truelight@0: 		loader->Release ();
truelight@0: 		loader = NULL;
truelight@0: 	}
truelight@0: 
truelight@0: 	if (NULL != performance)
truelight@0: 	{
truelight@0:  		performance->CloseDown ();
truelight@0: 		performance->Release ();
truelight@0: 		performance = NULL;
truelight@0: 	}
truelight@0: 
truelight@0: 	if (COMInitialized) {
truelight@0: 		_proc.CoUninitialize();
truelight@0: 		COMInitialized = 0;
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@193: // Load MIDI file for playing
truelight@0: bool LoadMIDI (char *directory, char *filename)
truelight@0: {
truelight@0: 	DMUS_OBJECTDESC obj_desc;
truelight@0: 	WCHAR w_directory[_MAX_PATH];	// utf-16 version of the directory name.
truelight@0: 	WCHAR w_filename[_MAX_PATH];	// utf-16 version of the file name
truelight@0: 
truelight@0: 	if (NULL == performance)
truelight@0: 		return false;
truelight@0: 
truelight@0: 	MULTI_TO_WIDE(w_directory,directory);
truelight@0: 
truelight@0: 	if (FAILED(loader->SetSearchDirectory((REFGUID) GUID_DirectMusicAllTypes,
truelight@0: 				w_directory, FALSE))) {
truelight@0: 		MSGBOX("LoadMIDI: SetSearchDirectory failed");
truelight@0: 		return false;
truelight@0: 	}
truelight@0: 
truelight@0: 	// set up the loader object info
truelight@0: 	ZeroMemory (&obj_desc, sizeof (obj_desc));
truelight@0: 	obj_desc.dwSize = sizeof (obj_desc);
truelight@0: 
truelight@0: 	MULTI_TO_WIDE(w_filename,filename);
truelight@0: 	obj_desc.guidClass = CLSID_DirectMusicSegment;
truelight@0: 
truelight@0: 	wcscpy (obj_desc.wszFileName,w_filename);
truelight@0: 	obj_desc.dwValidData = DMUS_OBJ_CLASS | DMUS_OBJ_FILENAME;
truelight@0: 
truelight@0: 	// release the existing segment if we have any
truelight@0: 	if (NULL != segment)
truelight@0: 		ReleaseSegment();
truelight@0: 
truelight@0: 	// and make a new segment
truelight@193: 	if (FAILED(loader->GetObject(&obj_desc,
truelight@193: 			(REFIID)IID_IDirectMusicSegment,
truelight@0: 			(LPVOID *) &segment))) {
truelight@0: 		MSGBOX("LoadMIDI: Get object failed");
truelight@0: 		return FALSE;
truelight@0: 	}
truelight@0: 
truelight@0: 	// next we need to tell the segment what kind of data it contains. We do this
truelight@0: 	// with the IDirectMusicSegment::SetParam function.
truelight@0: 	if (FAILED(segment->SetParam((REFGUID)GUID_StandardMIDIFile,
truelight@0: 			-1, 0, 0, (LPVOID)performance))) {
truelight@0: 		MSGBOX("LoadMIDI: SetParam (MIDI file) failed");
truelight@0: 		return false;
truelight@0: 	}
truelight@0: 
truelight@0: 	// finally, we need to tell the segment to 'download' the instruments
truelight@0: 	if (FAILED(segment->SetParam((REFGUID)GUID_Download,
truelight@0: 			-1, 0, 0, (LPVOID)performance))) {
truelight@0: 		MSGBOX("LoadMIDI: Failed to download instruments");
truelight@0: 		return false;
truelight@0: 	}
truelight@0: 
truelight@0: 	// at this point, the MIDI file is loaded and ready to play!
truelight@0: 	return true;
truelight@0: }
truelight@0: 
truelight@0: // Start playing the MIDI file
truelight@0: void PlaySegment (void)
truelight@0: {
truelight@0: 	if (NULL == performance)
truelight@0: 		return;
truelight@0: 
truelight@0: 	if (FAILED(performance->PlaySegment(segment, 0, 0, NULL))) {
truelight@0: 		MSGBOX("PlaySegment failed");
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: // Stop playing
truelight@0: void StopSegment (void)
truelight@0: {
truelight@0: 	if (NULL == performance || NULL == segment)
truelight@0: 		return;
truelight@0: 
truelight@0: 	if (FAILED(performance->Stop(segment, NULL, 0, 0))) {
truelight@0: 		MSGBOX("StopSegment failed");
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: // Find out whether playing has started or stopped
truelight@0: bool IsSegmentPlaying (void)
truelight@0: {
truelight@0: 	if (NULL == performance || NULL == segment)
truelight@0: 		return FALSE;
truelight@0: 
truelight@0: 	// IsPlaying return S_OK if the segment is currently playing
truelight@0: 	return performance->IsPlaying(segment, NULL) == S_OK ? TRUE : FALSE;
truelight@0: }
truelight@0: 
truelight@0: void SetVolume(long vol)
truelight@0: {
truelight@0: 	long db;
truelight@0: 
truelight@0: 	if (performance == NULL && !InitDirectMusic())
truelight@0: 		return;
truelight@0: 
truelight@0: 	db = ((vol >> 21) & 0x7ff) - 1000;
truelight@0: 	performance->SetGlobalParam(GUID_PerfMasterVolume, &db, sizeof(db));
truelight@0: }
truelight@0: 
truelight@0: #if defined(__cplusplus)
truelight@0: }
truelight@0: #endif
truelight@0: 
darkvater@223: #endif /* WIN32_ENABLE_DIRECTMUSIC_SUPPORT */