/// <summary>
/// Load a LibVlc function from unmanaged to managed.
/// </summary>
/// <exception cref="TypeLoadException">A custom attribute type cannot be loaded. </exception>
/// <exception cref="NoLibVlcFunctionAttributeException">
/// For LibVlcFunction, need LibVlcFunctionAttribute to get Infomation
/// of function.
/// </exception>
/// <exception cref="FunctionNotFoundException">Can't find function in dll.</exception>
public LibVlcFunction(IntPtr libHandle, LibVlcVersion version)
{
IsEnable = false;
_version = version;
var attrs = typeof(T).GetCustomAttributes(typeof(LibVlcFunctionAttribute), false);
foreach (var item in attrs)
{
if (item is LibVlcFunctionAttribute)
{
FunctionInfomation = item as LibVlcFunctionAttribute;
break;
}
}
if (FunctionInfomation == null)
{
throw new NoLibVlcFunctionAttributeException();
}
if (_version == null || _version.IsFunctionAvailable(FunctionInfomation))
{
IntPtr procAddress;
try
{
procAddress = Win32Api.GetProcAddress(libHandle, FunctionInfomation.FunctionName.Trim());
}
catch (Win32Exception e)
{
throw new FunctionNotFoundException(FunctionInfomation, _version, e);
}
var del = Marshal.GetDelegateForFunctionPointer(procAddress, typeof(T));
_functionDelegate = (T)Convert.ChangeType(del, typeof(T));
IsEnable = true;
}
}
/// <summary>
/// Load LibVlc dlls, and mapping all function.
/// </summary>
/// <param name="libVlcDirectory">directory of LibVlc</param>
/// <exception cref="LibVlcLoadLibraryException">
/// Can't load LibVlc dlls, check the platform and LibVlc target platform
/// (should be same, x86 or x64).
/// </exception>
/// <exception cref="TypeLoadException">A custom attribute type cannot be loaded. </exception>
/// <exception cref="NoLibVlcFunctionAttributeException">
/// For LibVlcFunction, need LibVlcFunctionAttribute to get Infomation
/// of function.
/// </exception>
/// <exception cref="FunctionNotFoundException">Can't find function in dll.</exception>
/// <exception cref="VersionStringParseException">Can't parse libvlc version string, it must like "2.2.0-Meta Weatherwax".</exception>
/// <exception cref="OverflowException">
/// At least one component of version represents a number greater than
/// <see cref="F:System.Int32.MaxValue" />.
/// </exception>
public static void LoadLibVlc(String libVlcDirectory = null)
{
LibVlcDirectory = libVlcDirectory == null ? "" : libVlcDirectory;
if (IsLibLoaded) return;
try
{
FileInfo libcore = new FileInfo(Path.Combine(LibVlcDirectory, "libvlccore.dll"));
FileInfo libvlc = new FileInfo(Path.Combine(LibVlcDirectory, "libvlc.dll"));
LibVlcVCoreHandle = Win32Api.LoadLibrary(libcore.FullName);
LibVlcHandle = Win32Api.LoadLibrary(libvlc.FullName);
}
catch (Win32Exception e)
{
throw new LibVlcLoadLibraryException(e);
}
_getVersionFunction = new LibVlcFunction<GetVersion>();
LibVlcVersion = new LibVlcVersion(GetVersion());
_getCompilerFunction = new LibVlcFunction<GetCompiler>();
_getChangesetFunction = new LibVlcFunction<GetChangeset>();
_freeFunction = new LibVlcFunction<Free>();
_releaseLibVlcModuleDescriptionFunction = new LibVlcFunction<ReleaseLibVlcModuleDescription>();
_releaseAudioOutputListFunction = new LibVlcFunction<ReleaseAudioOutputList>();
_releaseAudioDeviceListFunction = new LibVlcFunction<ReleaseAudioDeviceList>();
_releaseTrackDescriptionFunction = new LibVlcFunction<ReleaseTrackDescription>();
_releaseTracksFunction = new LibVlcFunction<ReleaseTracks>();
Vlc.LoadLibVlc();
VlcError.LoadLibVlc();
VlcEventManager.LoadLibVlc();
VlcMedia.LoadLibVlc();
VlcMediaPlayer.LoadLibVlc();
AudioEqualizer.LoadLibVlc();
}
