mirror of
https://github.com/Sarsoo/Spotify.NET.git
synced 2024-12-24 06:56:27 +00:00
Fixed occasional COMException in GetSpotifyVolumeObject (#222)
* Added volume controls in Example app * Fixed occasional COMException when using Get- or SetSpotifyVolume This exception only happens if Spotify is using an audio device different from the default one. Such a thing is only possible (as of v1.0.75.483.g7ff4a0dc) when using the "--enable-audio-graph" command line argument, that makes available the "Playback device" advanced option in Spotify.
This commit is contained in:
Alessandro Attard Barbini
Jonas Dellinger
parent
4b40a1b477
commit
159b60331e
58
SpotifyAPI.Example/LocalControl.Designer.cs
generated
58
SpotifyAPI.Example/LocalControl.Designer.cs
generated
@ -61,6 +61,10 @@
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this.artistLinkLabel = new System.Windows.Forms.LinkLabel();
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this.titleLinkLabel = new System.Windows.Forms.LinkLabel();
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this.smallAlbumPicture = new System.Windows.Forms.PictureBox();
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this.volumeDownBtn = new System.Windows.Forms.Button();
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this.volumeUpBtn = new System.Windows.Forms.Button();
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this.label9 = new System.Windows.Forms.Label();
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this.volumeMixerLabel = new System.Windows.Forms.Label();
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((System.ComponentModel.ISupportInitialize)(this.bigAlbumPicture)).BeginInit();
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this.groupBox1.SuspendLayout();
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this.trackInfoBox.SuspendLayout();
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@ -69,7 +73,7 @@
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//
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// bigAlbumPicture
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//
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this.bigAlbumPicture.Location = new System.Drawing.Point(327, 13);
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this.bigAlbumPicture.Location = new System.Drawing.Point(330, 13);
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this.bigAlbumPicture.Name = "bigAlbumPicture";
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this.bigAlbumPicture.Size = new System.Drawing.Size(640, 640);
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this.bigAlbumPicture.TabIndex = 2;
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@ -77,6 +81,10 @@
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//
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// groupBox1
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//
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this.groupBox1.Controls.Add(this.volumeMixerLabel);
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this.groupBox1.Controls.Add(this.label9);
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this.groupBox1.Controls.Add(this.volumeUpBtn);
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this.groupBox1.Controls.Add(this.volumeDownBtn);
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this.groupBox1.Controls.Add(this.repeatShuffleLabel);
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this.groupBox1.Controls.Add(this.label6);
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this.groupBox1.Controls.Add(this.versionLabel);
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@ -428,6 +436,50 @@
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this.smallAlbumPicture.TabIndex = 5;
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this.smallAlbumPicture.TabStop = false;
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//
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// volumeDownBtn
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//
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this.volumeDownBtn.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
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this.volumeDownBtn.Location = new System.Drawing.Point(247, 134);
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this.volumeDownBtn.Margin = new System.Windows.Forms.Padding(0);
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this.volumeDownBtn.Name = "volumeDownBtn";
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this.volumeDownBtn.Size = new System.Drawing.Size(65, 24);
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this.volumeDownBtn.TabIndex = 32;
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this.volumeDownBtn.Text = "Volume-";
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this.volumeDownBtn.UseVisualStyleBackColor = true;
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this.volumeDownBtn.Click += new System.EventHandler(this.volumeDownBtn_Click);
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//
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// volumeUpBtn
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//
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this.volumeUpBtn.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
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this.volumeUpBtn.Location = new System.Drawing.Point(247, 110);
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this.volumeUpBtn.Margin = new System.Windows.Forms.Padding(0);
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this.volumeUpBtn.Name = "volumeUpBtn";
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this.volumeUpBtn.Size = new System.Drawing.Size(65, 24);
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this.volumeUpBtn.TabIndex = 33;
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this.volumeUpBtn.Text = "Volume+";
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this.volumeUpBtn.UseVisualStyleBackColor = true;
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this.volumeUpBtn.Click += new System.EventHandler(this.volumeUpBtn_Click);
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//
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// label9
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//
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this.label9.AutoSize = true;
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this.label9.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
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this.label9.Location = new System.Drawing.Point(7, 117);
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this.label9.Name = "label9";
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this.label9.Size = new System.Drawing.Size(155, 17);
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this.label9.TabIndex = 34;
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this.label9.Text = "Volume Mixer\'s volume:";
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//
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// volumeMixerLabel
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//
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this.volumeMixerLabel.AutoSize = true;
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this.volumeMixerLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
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this.volumeMixerLabel.Location = new System.Drawing.Point(168, 117);
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this.volumeMixerLabel.Name = "volumeMixerLabel";
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this.volumeMixerLabel.Size = new System.Drawing.Size(13, 17);
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this.volumeMixerLabel.TabIndex = 35;
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this.volumeMixerLabel.Text = "-";
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//
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// LocalControl
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//
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this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
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@ -483,5 +535,9 @@
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private System.Windows.Forms.Label label6;
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private System.Windows.Forms.Label repeatShuffleLabel;
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private System.Windows.Forms.Label advertLabel;
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private System.Windows.Forms.Button volumeUpBtn;
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private System.Windows.Forms.Button volumeDownBtn;
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private System.Windows.Forms.Label volumeMixerLabel;
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private System.Windows.Forms.Label label9;
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}
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}
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@ -72,6 +72,8 @@ namespace SpotifyAPI.Example
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if (status.Track != null) //Update track infos
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UpdateTrack(status.Track);
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RefreshVolumeMixerVolume();
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}
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public async void UpdateTrack(Track track)
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@ -106,6 +108,11 @@ namespace SpotifyAPI.Example
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isPlayingLabel.Text = playing.ToString();
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}
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public void RefreshVolumeMixerVolume()
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{
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volumeMixerLabel.Text = _spotify.GetSpotifyVolume().ToString(CultureInfo.InvariantCulture);
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}
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private void _spotify_OnVolumeChange(object sender, VolumeChangeEventArgs e)
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{
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if (InvokeRequired)
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@ -178,6 +185,24 @@ namespace SpotifyAPI.Example
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_spotify.Skip();
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}
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private void volumeUpBtn_Click(object sender, EventArgs e)
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{
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float currentVolume = _spotify.GetSpotifyVolume();
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float newVolume = currentVolume + 2.0f;
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_spotify.SetSpotifyVolume(newVolume >= 100.0f ? 100.0f : newVolume);
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RefreshVolumeMixerVolume();
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}
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private void volumeDownBtn_Click(object sender, EventArgs e)
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{
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float currentVolume = _spotify.GetSpotifyVolume();
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float newVolume = currentVolume - 2.0f;
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_spotify.SetSpotifyVolume(newVolume <= 0.0f ? 0.0f : newVolume);
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RefreshVolumeMixerVolume();
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}
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private static String FormatTime(double sec)
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{
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TimeSpan span = TimeSpan.FromSeconds(sec);
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@ -67,11 +67,13 @@ namespace SpotifyAPI.Local
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Marshal.ReleaseComObject(volume);
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}
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private static ISimpleAudioVolume GetSpotifyVolumeObject() {
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return (from p in Process.GetProcessesByName(SpotifyProcessName)
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private static ISimpleAudioVolume GetSpotifyVolumeObject()
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{
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var audioVolumeObjects = from p in Process.GetProcessesByName(SpotifyProcessName)
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let vol = GetVolumeObject(p.Id)
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where vol != null
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select vol).FirstOrDefault();
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select vol;
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return audioVolumeObjects.FirstOrDefault();
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}
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private static ISimpleAudioVolume GetVolumeObject(int pid)
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@ -81,10 +83,59 @@ namespace SpotifyAPI.Local
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IMmDevice speakers;
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deviceEnumerator.GetDefaultAudioEndpoint(EDataFlow.ERender, ERole.EMultimedia, out speakers);
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string defaultDeviceId;
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speakers.GetId(out defaultDeviceId);
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ISimpleAudioVolume volumeControl = GetVolumeObject(pid, speakers);
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Marshal.ReleaseComObject(speakers);
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if (volumeControl == null)
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{
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// If volumeControl is null, then the process's volume object might be on a different device.
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// This happens if the process doesn't use the default device.
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//
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// As far as Spotify is concerned, if using the "--enable-audio-graph" command line argument,
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// a new option becomes available in the Settings that makes it possible to change the playback device.
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IMmDeviceCollection deviceCollection;
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deviceEnumerator.EnumAudioEndpoints(EDataFlow.ERender, EDeviceState.Active, out deviceCollection);
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int count;
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deviceCollection.GetCount(out count);
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for (int i = 0; i < count; i++)
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{
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IMmDevice device;
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deviceCollection.Item(i, out device);
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string deviceId;
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device.GetId(out deviceId);
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try
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{
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if (deviceId == defaultDeviceId)
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continue;
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volumeControl = GetVolumeObject(pid, device);
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if (volumeControl != null)
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break;
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}
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finally
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{
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Marshal.ReleaseComObject(device);
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}
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}
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}
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Marshal.ReleaseComObject(deviceEnumerator);
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return volumeControl;
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}
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private static ISimpleAudioVolume GetVolumeObject(int pid, IMmDevice device)
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{
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// activate the session manager. we need the enumerator
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Guid iidIAudioSessionManager2 = typeof(IAudioSessionManager2).GUID;
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object o;
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speakers.Activate(ref iidIAudioSessionManager2, 0, IntPtr.Zero, out o);
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device.Activate(ref iidIAudioSessionManager2, 0, IntPtr.Zero, out o);
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IAudioSessionManager2 mgr = (IAudioSessionManager2)o;
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// enumerate sessions for on this device
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@ -105,15 +156,13 @@ namespace SpotifyAPI.Local
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if (cpid == pid)
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{
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volumeControl = (ISimpleAudioVolume) ctl;
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volumeControl = (ISimpleAudioVolume)ctl;
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break;
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}
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Marshal.ReleaseComObject(ctl);
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}
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Marshal.ReleaseComObject(sessionEnumerator);
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Marshal.ReleaseComObject(mgr);
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Marshal.ReleaseComObject(speakers);
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Marshal.ReleaseComObject(deviceEnumerator);
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return volumeControl;
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}
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@ -121,7 +170,6 @@ namespace SpotifyAPI.Local
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[Guid("BCDE0395-E52F-467C-8E3D-C4579291692E")]
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private class MMDeviceEnumerator
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{
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}
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private enum EDataFlow
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@ -140,10 +188,21 @@ namespace SpotifyAPI.Local
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ERoleEnumCount
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}
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[Flags]
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private enum EDeviceState
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{
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Active = 0x00000001,
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Disabled = 0x00000002,
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NotPresent = 0x00000004,
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UnPlugged = 0x00000008,
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All = 0x0000000F
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}
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[Guid("A95664D2-9614-4F35-A746-DE8DB63617E6"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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private interface IMmDeviceEnumerator
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{
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int NotImpl1();
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[PreserveSig]
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int EnumAudioEndpoints(EDataFlow dataFlow, EDeviceState stateMask, [Out] out IMmDeviceCollection deviceCollection);
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[PreserveSig]
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int GetDefaultAudioEndpoint(EDataFlow dataFlow, ERole role, out IMmDevice ppDevice);
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@ -154,6 +213,21 @@ namespace SpotifyAPI.Local
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{
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[PreserveSig]
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int Activate(ref Guid iid, int dwClsCtx, IntPtr pActivationParams, [MarshalAs(UnmanagedType.IUnknown)] out object ppInterface);
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int OpenPropertyStore_NotImpl();
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[PreserveSig]
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int GetId([Out, MarshalAs(UnmanagedType.LPWStr)] out string ppstrId);
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}
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[Guid("0BD7A1BE-7A1A-44DB-8397-CC5392387B5E"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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private interface IMmDeviceCollection
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{
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[PreserveSig]
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int GetCount(out int deviceCount);
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[PreserveSig]
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int Item(int deviceIndex, [Out] out IMmDevice device);
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}
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[Guid("77AA99A0-1BD6-484F-8BC7-2C654C9A9B6F"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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