Detect WMA File Decoder component at runtime + suggest download if not installed.

src/Config.h

@@ -25,7 +25,7 @@
 #define VER_LAMEXP_MAJOR				4
 #define VER_LAMEXP_MINOR_HI				0
 #define VER_LAMEXP_MINOR_LO				0
-#define VER_LAMEXP_BUILD				144
+#define VER_LAMEXP_BUILD				145
 #define VER_LAMEXP_SUFFIX				TechPreview
 
 /*

src/Dialog_MainWindow.cpp

@@ -56,6 +56,7 @@
 #include <QProcess>
 #include <QUuid>
 #include <QProcessEnvironment>
+#include <QCryptographicHash>
 
 //Win32 includes
 #include <Windows.h>
@@ -538,6 +539,16 @@ void MainWindow::windowShown(void)
 		QMessageBox::information(this, "AAC Support Disabled", messageText);
 	}
 	
+	//Check for WMA support
+	if(!lamexp_check_tool("wmawav.exe"))
+	{
+		QString messageText;
+		messageText += "<nobr>LameXP has detected that the WMA File Decoder component is not currently installed on your system.<br>";
+		messageText += "You won't be able to process WMA files as input unless the WMA File Decoder component is installed!</nobr>";
+		QMessageBox::information(this, "WMA Decoder Missing", messageText);
+		installWMADecoderActionTriggered(rand() % 2);
+	}
+
 	//Add files from the command-line
 	for(int i = 0; i < arguments.count() - 1; i++)
 	{
@@ -1404,8 +1415,9 @@ void MainWindow::disableSoundsActionTriggered(bool checked)
 void MainWindow::installWMADecoderActionTriggered(bool checked)
 {
 	static const char *download_url = "http://www.nch.com.au/components/wmawav.exe";
+	static const char *download_hash = "52a3b0e6690faf3f830c336d3c0eadfb7a4e9bc6";
 	
-	if(QMessageBox::question(this, "Install WMA Decoder", "Do you want to download and install the WMA File Deocder now?", "Download && Install", "Cancel") != 0)
+	if(QMessageBox::question(this, "Install WMA Decoder", "Do you want to download and install the WMA File Decoder component now?", "Download && Install", "Cancel") != 0)
 	{
 		return;
 	}
@@ -1418,6 +1430,8 @@ void MainWindow::installWMADecoderActionTriggered(bool checked)
 		throw "Required binary is not available!";
 	}
 
+	while(true)
+	{
 		QString setupFile = QString("%1/%2.exe").arg(lamexp_temp_folder(), lamexp_rand_str());
 
 		QProcess process;
@@ -1433,7 +1447,31 @@ void MainWindow::installWMADecoderActionTriggered(bool checked)
 		if(process.exitCode() != 0 || QFileInfo(setupFile).size() < 10240)
 		{
 			QFile::remove(setupFile);
-		QMessageBox::critical(this, "Download Failed", "Failed to download the WMA Decoder. Check your internet connection!");
+			if(QMessageBox::critical(this, "Download Failed", "Failed to download the WMA Decoder setup. Check your internet connection!", "Try Again", "Cancel") == 0)
+			{
+				continue;
+			}
+			return;
+		}
+
+		QFile setupFileContent(setupFile);
+		QCryptographicHash setupFileHash(QCryptographicHash::Sha1);
+		
+		setupFileContent.open(QIODevice::ReadOnly);
+		if(setupFileContent.isOpen() && setupFileContent.isReadable())
+		{
+			setupFileHash.addData(setupFileContent.readAll());
+			setupFileContent.close();
+		}
+
+		if(_stricmp(setupFileHash.result().toHex().constData(), download_hash))
+		{
+			qWarning("Hash miscompare:\n  Expected %s\n  Detected %s\n", download_hash, setupFileHash.result().toHex().constData());
+			QFile::remove(setupFile);
+			if(QMessageBox::critical(this, "Download Failed", "The download seems to be corrupted. Please try again!", "Try Again", "Cancel") == 0)
+			{
+				continue;
+			}
 			return;
 		}
 
@@ -1443,6 +1481,8 @@ void MainWindow::installWMADecoderActionTriggered(bool checked)
 		QFile::remove(setupFile);
 		QApplication::restoreOverrideCursor();
 
-	QMessageBox::information(this, "WMA Decoder", "The WMA Decoder has been installed. Please restart LameXP now!");
+		QMessageBox::information(this, "WMA Decoder", "The WMA File Decoder has been installed. Please restart LameXP now!");
+		break;
+	}
 }
 

src/Global.cpp

@@ -611,10 +611,10 @@ const QString &lamexp_temp_folder(void)
 	typedef HRESULT (WINAPI *SHGetKnownFolderPathFun)(__in const GUID &rfid, __in DWORD dwFlags, __in HANDLE hToken, __out PWSTR *ppszPath);
 	typedef HRESULT (WINAPI *SHGetFolderPathFun)(__in HWND hwndOwner, __in int nFolder, __in HANDLE hToken, __in DWORD dwFlags, __out LPWSTR pszPath);
 
-	const char *TEMP_STR = "Temp";
+	static const char *TEMP_STR = "Temp";
-	const int CSIDL_LOCAL_APPDATA = 0x001c;
+	static const int CSIDL_LOCAL_APPDATA = 0x001c;
-	const GUID LocalAppDataID={0xF1B32785,0x6FBA,0x4FCF,{0x9D,0x55,0x7B,0x8E,0x7F,0x15,0x70,0x91}};
+	static const GUID LocalAppDataID={0xF1B32785,0x6FBA,0x4FCF,{0x9D,0x55,0x7B,0x8E,0x7F,0x15,0x70,0x91}};
-	const GUID LocalAppDataLowID={0xA520A1A4,0x1780,0x4FF6,{0xBD,0x18,0x16,0x73,0x43,0xC5,0xAF,0x16}};
+	static const GUID LocalAppDataLowID={0xA520A1A4,0x1780,0x4FF6,{0xBD,0x18,0x16,0x73,0x43,0xC5,0xAF,0x16}};
 
 	if(g_lamexp_temp_folder.isEmpty())
 	{

src/Thread_Initialization.cpp

@@ -29,6 +29,9 @@
 #include <QProcess>
 #include <QMap>
 #include <QDir>
+#include <QLibrary>
+
+#include <Windows.h>
 
 ////////////////////////////////////////////////////////////
 // TOOLS
@@ -137,6 +140,9 @@ void InitializationThread::run()
 	//Look for Nero encoder
 	initNeroAac();
 	
+	//Look for WMA File decoder
+	initWmaDec();
+
 	delay();
 	m_bSuccess = true;
 }
@@ -260,6 +266,54 @@ void InitializationThread::initNeroAac(void)
 	}
 }
 
+
+void InitializationThread::initWmaDec(void)
+{
+	typedef HRESULT (WINAPI *SHGetFolderPathFun)(__in HWND hwndOwner, __in int nFolder, __in HANDLE hToken, __in DWORD dwFlags, __out LPWSTR pszPath);
+	static const char* wmaDecoderComponentPath = "NCH Software/Components/wmawav/wmawav.exe";
+	static const int CSIDL_PROGRAM_FILES = 0x0026;
+
+	QLibrary Kernel32Lib("shell32.dll");
+	SHGetFolderPathFun SHGetFolderPathPtr = (SHGetFolderPathFun) Kernel32Lib.resolve("SHGetFolderPathW");
+	QDir programFilesDir = QDir::temp();
+
+	if(SHGetFolderPathPtr)
+	{
+		WCHAR *programFilesPath = new WCHAR[4096];
+		if(SHGetFolderPathPtr(NULL, CSIDL_PROGRAM_FILES, NULL, NULL, programFilesPath) == S_OK)
+		{
+			programFilesDir.setPath(QDir::fromNativeSeparators(QString::fromUtf16(reinterpret_cast<const unsigned short*>(programFilesPath))));
+		}
+	}
+
+	LockedFile *wmaFileBin = NULL;
+	QFileInfo wmaFileInfo = QFileInfo(QString("%1/%2").arg(programFilesDir.absolutePath(), wmaDecoderComponentPath));
+
+	//Lock the WMA Decoder binaries
+	if(!wmaFileInfo.exists())
+	{
+		qDebug("WMA File Decoder not found -> WMA decoding support will be disabled!\n");
+		return;
+	}
+
+	qDebug("Found WMA File Decoder binary:\n%s\n", wmaFileInfo.canonicalFilePath().toUtf8().constData());
+
+	try
+	{
+		wmaFileBin = new LockedFile(wmaFileInfo.canonicalFilePath());
+	}
+	catch(...)
+	{
+		qWarning("Failed to get excluive lock to WMA File Decoder binary -> WMA decoding support will be disabled!");
+		return;
+	}
+
+	if(wmaFileBin)
+	{
+		lamexp_register_tool(wmaFileInfo.fileName(), wmaFileBin);
+	}
+}
+
 ////////////////////////////////////////////////////////////
 // EVENTS
 ////////////////////////////////////////////////////////////

src/Thread_Initialization.h

@@ -39,6 +39,7 @@ public:
 private:
 	void delay(void);
 	void initNeroAac(void);
+	void initWmaDec(void);
 
 	bool m_bSuccess;
 };