static IntPtr SelectNativeCtor(LibVLC libVLC, string mrl, FromType type)
{
if (libVLC == null)
{
throw new ArgumentNullException(nameof(libVLC));
}
if (string.IsNullOrEmpty(mrl))
{
throw new ArgumentNullException(nameof(mrl));
}
var mrlPtr = Utf8StringMarshaler.GetInstance().MarshalManagedToNative(mrl);
if (mrlPtr == IntPtr.Zero)
{
throw new ArgumentException($"error marshalling {mrl} to UTF-8 for native interop");
}
switch (type)
{
case FromType.FromLocation:
return(Native.LibVLCMediaNewLocation(libVLC.NativeReference, mrlPtr));
case FromType.FromPath:
return(Native.LibVLCMediaNewPath(libVLC.NativeReference, mrlPtr));
case FromType.AsNode:
return(Native.LibVLCMediaNewAsNode(libVLC.NativeReference, mrlPtr));
default:
return(IntPtr.Zero);
}
}
/// <summary>
/// Post a login answer.
/// After this call, the instance won't be valid anymore
/// </summary>
/// <param name="username">valid non-empty string</param>
/// <param name="password">valid string</param>
/// <param name="store">if true stores the credentials</param>
/// <returns></returns>
public bool PostLogin(string username, string password, bool store)
{
if (_id == IntPtr.Zero)
{
throw new VLCException("Calling method on dismissed Dialog instance");
}
if (username == null)
{
username = string.Empty;
}
if (password == null)
{
password = string.Empty;
}
var usernamePtr = Utf8StringMarshaler.GetInstance().MarshalManagedToNative(username);
var passwordPtr = Utf8StringMarshaler.GetInstance().MarshalManagedToNative(password);
var result = Native.LibVLCDialogPostLogin(_id, usernamePtr, passwordPtr, store) == 0;
_id = IntPtr.Zero;
return(result);
}
/// <summary>
/// Code taken from Vlc.DotNet
/// </summary>
/// <param name="data"></param>
/// <param name="level"></param>
/// <param name="ctx"></param>
/// <param name="format"></param>
/// <param name="args"></param>
void OnLogInternal(IntPtr data, LogLevel level, IntPtr ctx, string format, IntPtr args)
{
if (_log == null)
{
return;
}
// Original source for va_list handling: https://stackoverflow.com/a/37629480/2663813
var byteLength = Native._vscprintf(format, args) + 1;
var utf8Buffer = Marshal.AllocHGlobal(byteLength);
string formattedDecodedMessage;
try
{
Native.vsprintf(utf8Buffer, format, args);
formattedDecodedMessage = (string)Utf8StringMarshaler.GetInstance().MarshalNativeToManaged(utf8Buffer);
}
finally
{
Marshal.FreeHGlobal(utf8Buffer);
}
GetLogContext(ctx, out var module, out var file, out var line);
// Do the notification on another thread, so that VLC is not interrupted by the logging
Task.Run(() => _log?.Invoke(NativeReference, new LogEventArgs(level, formattedDecodedMessage, module, file, line)));
}
void OnAudioDevice(IntPtr ptr)
{
var deviceNamePtr = RetrieveEvent(ptr).Union.AudioDeviceChanged.Device;
var deviceName = (string)Utf8StringMarshaler.GetInstance().MarshalNativeToManaged(deviceNamePtr);
_mediaPlayerAudioDevice?.Invoke(this, new MediaPlayerAudioDeviceEventArgs(deviceName));
}
void OnSnapshotTaken(IntPtr ptr)
{
var filenamePtr = RetrieveEvent(ptr).Union.MediaPlayerSnapshotTaken.Filename;
var filename = (string)Utf8StringMarshaler.GetInstance().MarshalNativeToManaged(filenamePtr);
_mediaPlayerSnapshotTaken?.Invoke(this, new MediaPlayerSnapshotTakenEventArgs(filename));
}
/// <summary>
/// Gets log message debug infos.
///
/// This function retrieves self-debug information about a log message:
/// - the name of the VLC module emitting the message,
/// - the name of the source code module (i.e.file) and
/// - the line number within the source code module.
///
/// The returned module name and file name will be NULL if unknown.
/// The returned line number will similarly be zero if unknown.
/// </summary>
/// <param name="logContext">The log message context (as passed to the <see cref="LogCallback"/>)</param>
/// <param name="module">The module name storage.</param>
/// <param name="file">The source code file name storage.</param>
/// <param name="line">The source code file line number storage.</param>
void GetLogContext(IntPtr logContext, out string module, out string file, out uint?line)
{
Native.LibVLCLogGetContext(logContext, out var modulePtr, out var filePtr, out var linePtr);
line = linePtr == UIntPtr.Zero ? null : (uint?)linePtr.ToUInt32();
module = Utf8StringMarshaler.GetInstance().MarshalNativeToManaged(modulePtr) as string;
file = Utf8StringMarshaler.GetInstance().MarshalNativeToManaged(filePtr) as string;
}
/// <summary>Read the meta of the media.</summary>
/// <param name="metadataType">the meta to read</param>
/// <returns>the media's meta</returns>
/// <remarks>
/// If the media has not yet been parsed this will return NULL.
/// </remarks>
public string Meta(MetadataType metadataType)
{
var metaPtr = Native.LibVLCMediaGetMeta(NativeReference, metadataType);
if (metaPtr == IntPtr.Zero)
{
return(string.Empty);
}
return(Utf8StringMarshaler.GetInstance().MarshalNativeToManaged(metaPtr) as string);
}
/// <summary> /// Get the name of a particular equalizer preset. /// This name can be used, for example, to prepare a preset label or menu in a user interface. /// </summary> /// <param name="index">index of the preset, counting from zero</param> /// <returns>preset name, or empty string if there is no such preset</returns> public string PresetName(uint index) => (string)Utf8StringMarshaler.GetInstance().MarshalNativeToManaged(Native.LibVLCAudioEqualizerGetPresetName(index));
/// <summary>Gets a list of audio output devices for a given audio output module,</summary>
/// <param name="audioOutputName">
/// <para>audio output name</para>
/// <para>(as returned by libvlc_audio_output_list_get())</para>
/// </param>
/// <returns>
/// <para>A NULL-terminated linked list of potential audio output devices.</para>
/// <para>It must be freed with libvlc_audio_output_device_list_release()</para>
/// </returns>
/// <remarks>
/// <para>libvlc_audio_output_device_set().</para>
/// <para>Not all audio outputs support this. In particular, an empty (NULL)</para>
/// <para>list of devices doesnotimply that the specified audio output does</para>
/// <para>not work.</para>
/// <para>The list might not be exhaustive.</para>
/// <para>Some audio output devices in the list might not actually work in</para>
/// <para>some circumstances. By default, it is recommended to not specify any</para>
/// <para>explicit audio device.</para>
/// <para>LibVLC 2.1.0 or later.</para>
/// </remarks>
public AudioOutputDevice[] AudioOutputDevices(string audioOutputName) =>
MarshalUtils.Retrieve(() => Native.LibVLCAudioOutputDeviceListGet(NativeReference, Utf8StringMarshaler.GetInstance().MarshalManagedToNative(audioOutputName)),
MarshalUtils.PtrToStructure <AudioOutputDeviceStructure>,
s => s.Build(),
device => device.Next,
Native.LibVLCAudioOutputDeviceListRelease);
