[gnome-subtitles/gstreamer-sharp-bindings] gstreamer-sharp prototype
- From: Pedro Castro <pcastro src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gnome-subtitles/gstreamer-sharp-bindings] gstreamer-sharp prototype
- Date: Mon, 10 Jan 2022 22:25:53 +0000 (UTC)
commit 56799d55104255072cb955a4b07d783b9975152f
Author: Pedro Castro <pedro gnomesubtitles org>
Date: Mon Jan 10 22:23:44 2022 +0000
gstreamer-sharp prototype
gnome-subtitles.csproj | 10 +-
src/External/GStreamer/GstBackend.cs | 185 +++++++++++++++++++++
src/External/GStreamer/GstMediaInfo.cs | 39 +++++
.../GstBackend/{GstBackend.cs => GstBackendOld.cs} | 10 +-
.../{GstMediaInfo.cs => GstMediaInfoOld.cs} | 6 +-
src/GnomeSubtitles/Core/Base.cs | 6 +-
src/GnomeSubtitles/Ui/VideoPreview/Player.cs | 4 +-
7 files changed, 245 insertions(+), 15 deletions(-)
---
diff --git a/gnome-subtitles.csproj b/gnome-subtitles.csproj
index 4d55860..4164631 100644
--- a/gnome-subtitles.csproj
+++ b/gnome-subtitles.csproj
@@ -54,6 +54,9 @@
<Reference Include="glib-sharp, Version=3.0.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f">
<Package>glib-sharp-3.0</Package>
</Reference>
+ <Reference Include="gstreamer-sharp">
+ <HintPath>..\gstreamer-sharp\build\sources\gstreamer-sharp.dll</HintPath>
+ </Reference>
</ItemGroup>
<ItemGroup>
<EmbeddedResource Include="src\Glade\MainWindow.ui">
@@ -275,10 +278,12 @@
<Compile Include="src\GnomeSubtitles\Ui\WindowState.cs" />
<Compile Include="src\External\Enchant\Enchant.cs" />
<Compile Include="src\External\Interop\Interop.cs" />
- <Compile Include="src\External\GstBackend\GstBackend.cs" />
- <Compile Include="src\External\GstBackend\GstMediaInfo.cs" />
+ <Compile Include="src\External\GstBackend\GstBackendOld.cs" />
+ <Compile Include="src\External\GstBackend\GstMediaInfoOld.cs" />
<Compile Include="src\GnomeSubtitles\Ui\VideoPreview\MediaBackend.cs" />
<Compile Include="src\GnomeSubtitles\Dialog\Message\DialogUtil.cs" />
+ <Compile Include="src\External\GStreamer\GstBackend.cs" />
+ <Compile Include="src\External\GStreamer\GstMediaInfo.cs" />
</ItemGroup>
<Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
<ItemGroup>
@@ -287,6 +292,7 @@
<Folder Include="src\External\GtkSpell\" />
<Folder Include="src\External\Enchant\" />
<Folder Include="src\External\Interop\" />
+ <Folder Include="src\External\GStreamer\" />
</ItemGroup>
<ItemGroup>
<None Include="data\gnome-subtitles.svg">
diff --git a/src/External/GStreamer/GstBackend.cs b/src/External/GStreamer/GstBackend.cs
new file mode 100644
index 0000000..5e7f6dc
--- /dev/null
+++ b/src/External/GStreamer/GstBackend.cs
@@ -0,0 +1,185 @@
+/*
+ * This file is part of Gnome Subtitles.
+ * Copyright (C) 2022 Pedro Castro
+ *
+ * Gnome Subtitles is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Gnome Subtitles is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+using GnomeSubtitles.Core;
+using GnomeSubtitles.Ui.VideoPreview;
+using Gst;
+using Mono.Unix;
+using SubLib.Util;
+using System;
+using System.Runtime.InteropServices;
+
+namespace External.GStreamer {
+
+ public class GstBackend : MediaBackend {
+
+ private Element playbin = null;
+ private Element gtkSink = null;
+ private GstMediaInfo mediaInfo = null;
+
+ /* Enums */
+ private enum ErrorType { GStreamer, NoMediaInfo, NoVideoOrAudio };
+
+ /* Error messages */
+ private readonly string ErrorMessageNoMediaInfo = Catalog.GetString("Unable to obtain the
complete media information.");
+
+ public override string Name => throw new NotImplementedException();
+
+ public override long CurrentPosition => throw new NotImplementedException();
+
+ public override long Duration => throw new NotImplementedException();
+
+ public override bool HasVideo => throw new NotImplementedException();
+
+ public override float AspectRatio => throw new NotImplementedException();
+
+ public override float FrameRate => throw new NotImplementedException();
+
+ public override bool HasAudio => throw new NotImplementedException();
+
+ public override Gtk.Widget CreateVideoWidget () {
+ throw new NotImplementedException();
+ }
+
+ public override void Dispose () {
+ throw new NotImplementedException();
+ }
+
+ public override void Initialize () {
+ //Disable LIBVA by default as it's causing lots of problems. This is done by setting
an invalid driver name.
+ if (!"FALSE".Equals(Environment.GetEnvironmentVariable("GS_DISABLE_LIBVA"))) {
+ Logger.Info("[GstBackend] Disabling libva");
+ Environment.SetEnvironmentVariable("LIBVA_DRIVER_NAME", "GNOME_SUBTITLES");
+ }
+
+ Gst.Application.Init();
+
+ playbin = ElementFactory.Make("playbin", "playbin");
+ gtkSink = ElementFactory.Make("gtksink", "gtksink");
+
+ playbin.Data ["video-sink"] = gtkSink; //FIXME funciona?
+
//g_object_set(G_OBJECT(backend->element), "video-sink", backend->video_element, NULL);
+
+ playbin.Bus.AddSignalWatch();
+ playbin.Bus.Message += OnGstMessage;
+ }
+
+ public override bool Load (string uri) {
+ throw new NotImplementedException();
+ }
+
+ public override void Pause () {
+ throw new NotImplementedException();
+ }
+
+ public override void Play () {
+ throw new NotImplementedException();
+ }
+
+ public override void Seek (long time, bool isAbsolute) {
+ throw new NotImplementedException();
+ }
+
+ public override void SetSpeed (float speed) {
+ throw new NotImplementedException();
+ }
+
+ public override void Unload () {
+ throw new NotImplementedException();
+ }
+
+ /* Private members */
+
+ private void OnGstMessage (object o, MessageArgs args) {
+
+ switch (args.Message.Type) {
+
+ /* ASYNC_DONE can be emitted many times (example: when returning back from
+ * pause to play). If the info is already loaded, don't do anything.
+ */
+ case MessageType.AsyncDone:
+ if (mediaInfo == null) {
+ LoadMediaInfo();
+ }
+ break;
+
+ /*case GST_MESSAGE_STATE_CHANGED: {
+ GstState old_state, new_state, pending_state;
+ gst_message_parse_state_changed(message, &old_state, &new_state,
&pending_state);
+ g_print("on_gst_message: STATE CHANGED: old=%s, new(current)=%s,
pending(target)=%s\n",
+ gst_element_state_get_name(old_state),
gst_element_state_get_name(new_state), gst_element_state_get_name(pending_state));
+ break;
+ }*/
+
+ case MessageType.Error:
+ GLib.GException gerror;
+ string debug;
+ args.Message.ParseError(out gerror, out debug);
+
+ Logger.Error("[GstBackend] Gst error: '{0}'; debug message: '{1}'",
gerror.Message, debug);
+ TriggerErrorFound(gerror.Message);
+ break;
+
+ // Playback finished
+ case MessageType.Eos:
+ TriggerEndOfStreamReached();
+ break;
+ }
+ }
+
+ private void LoadMediaInfo () {
+ mediaInfo = new GstMediaInfo();
+
+ /* Check for video and audio */
+ mediaInfo.HasVideo = CheckIfMediaHasVideo();
+ mediaInfo.HasAudio = CheckIfMediaHasAudio();
+
+ if (!mediaInfo.HasVideo && !mediaInfo.HasAudio) {
+ TriggerErrorFound(Catalog.GetString("The file contains no video or audio."));
+ return;
+ }
+
+ if (mediaInfo.HasVideo) {
+ LoadVideoInfo();
+ //load_media_info_video(backend);
+ }
+
+ LoadMediaDuration();
+ //load_media_info_duration(backend);
+ }
+
+ private bool CheckIfMediaHasVideo() {
+ throw new NotImplementedException();
+ }
+
+ private bool CheckIfMediaHasAudio() {
+ throw new NotImplementedException();
+ }
+
+ private bool LoadVideoInfo() {
+ throw new NotImplementedException();
+ }
+
+ private bool LoadMediaDuration() {
+ throw new NotImplementedException();
+ }
+
+ }
+
+}
\ No newline at end of file
diff --git a/src/External/GStreamer/GstMediaInfo.cs b/src/External/GStreamer/GstMediaInfo.cs
new file mode 100644
index 0000000..7225a3e
--- /dev/null
+++ b/src/External/GStreamer/GstMediaInfo.cs
@@ -0,0 +1,39 @@
+/*
+ * This file is part of Gnome Subtitles.
+ * Copyright (C) 2022 Pedro Castro
+ *
+ * Gnome Subtitles is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Gnome Subtitles is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace External.GStreamer {
+
+public class GstMediaInfo {
+
+ public long Duration { get; set; }
+
+ public bool HasVideo { get; set; }
+ public int Width { get; set; }
+ public int Height { get; set; }
+ public float AspectRatio { get; set; }
+ public float FrameRate { get; set; }
+
+ public bool HasAudio { get; set; }
+
+}
+
+}
diff --git a/src/External/GstBackend/GstBackend.cs b/src/External/GstBackend/GstBackendOld.cs
similarity index 96%
rename from src/External/GstBackend/GstBackend.cs
rename to src/External/GstBackend/GstBackendOld.cs
index c084f8a..1b5708c 100644
--- a/src/External/GstBackend/GstBackend.cs
+++ b/src/External/GstBackend/GstBackendOld.cs
@@ -42,18 +42,18 @@ using System.Runtime.InteropServices;
* - https://developer.gnome.org/totem/stable/BaconVideoWidget.html (Totem bacon video widget)
*/
-namespace External.GStreamer {
+namespace External.GstBackendOld {
/* Enums */
- public class GstBackend : MediaBackend {
+ public class GstBackendOld : MediaBackend {
private HandleRef backend;
- private GstMediaInfo mediaInfo = null;
+ private GstMediaInfoOld mediaInfo = null;
private float speed = 1f; //Keeping it here as we need to pass it to every 'seek' call
/* Delegates */
private delegate void ErrorFoundHandler(ErrorType type, string errorMessage, string
debugMessage);
- private delegate void LoadCompleteHandler(GstMediaInfo mediaInfo);
+ private delegate void LoadCompleteHandler(GstMediaInfoOld mediaInfo);
/* Enums */
private enum ErrorType { GStreamer, NoMediaInfo, NoVideoOrAudio};
@@ -161,7 +161,7 @@ namespace External.GStreamer {
/* Event handlers */
- private void OnLoadComplete(GstMediaInfo mediaInfo) {
+ private void OnLoadComplete(GstMediaInfoOld mediaInfo) {
this.mediaInfo = mediaInfo;
SetStatus(MediaStatus.Loaded);
}
diff --git a/src/External/GstBackend/GstMediaInfo.cs b/src/External/GstBackend/GstMediaInfoOld.cs
similarity index 93%
rename from src/External/GstBackend/GstMediaInfo.cs
rename to src/External/GstBackend/GstMediaInfoOld.cs
index e7022a1..20b6665 100644
--- a/src/External/GstBackend/GstMediaInfo.cs
+++ b/src/External/GstBackend/GstMediaInfoOld.cs
@@ -20,10 +20,10 @@
using System;
using System.Runtime.InteropServices;
-namespace External.GStreamer {
+namespace External.GstBackendOld {
[StructLayout(LayoutKind.Sequential)]
-public class GstMediaInfo {
+public class GstMediaInfoOld {
long duration;
bool has_video;
@@ -34,7 +34,7 @@ public class GstMediaInfo {
bool has_audio;
- public GstMediaInfo(IntPtr ptr) {
+ public GstMediaInfoOld(IntPtr ptr) {
if (ptr != IntPtr.Zero) {
Marshal.PtrToStructure(ptr, this);
}
diff --git a/src/GnomeSubtitles/Core/Base.cs b/src/GnomeSubtitles/Core/Base.cs
index 5277bf8..eb9874d 100644
--- a/src/GnomeSubtitles/Core/Base.cs
+++ b/src/GnomeSubtitles/Core/Base.cs
@@ -225,9 +225,9 @@ public static class Base {
public static void Open (string path, Encoding encoding, Uri videoUri) {
OpenDocument(path, encoding);
- //OpenVideo(videoUri); //FIXME
- videoUriToOpenWithTimeout = videoUri; //FIXME
- GLib.Timeout.Add(1000, OpenVideoWithTimeout); //FIXME
+ OpenVideo(videoUri); //FIXME
+ //videoUriToOpenWithTimeout = videoUri; //FIXME
+ //GLib.Timeout.Add(1000, OpenVideoWithTimeout); //FIXME
}
/* Nasty hack while there isn't a proper fix for #184 */
diff --git a/src/GnomeSubtitles/Ui/VideoPreview/Player.cs b/src/GnomeSubtitles/Ui/VideoPreview/Player.cs
index 08d3e29..86e0d61 100644
--- a/src/GnomeSubtitles/Ui/VideoPreview/Player.cs
+++ b/src/GnomeSubtitles/Ui/VideoPreview/Player.cs
@@ -17,7 +17,7 @@
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-using External.GStreamer;
+using External.GstBackendOld;
using GnomeSubtitles.Core;
using Gtk;
using SubLib.Util;
@@ -174,7 +174,7 @@ public class Player {
/* Private members */
private MediaBackend InitializeBackend() {
- MediaBackend backend = new GstBackend();
+ MediaBackend backend = new GstBackendOld();
backend.Initialize();
Widget videoWidget = backend.CreateVideoWidget();
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