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VideoPlayer implementation for Windows Desktop.
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Ray Batts
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Ray Batts
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Apr 22, 2014
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| using SharpDX; | ||
| using SharpDX.MediaFoundation; | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using System.Text; | ||
|
|
||
| namespace Microsoft.Xna.Framework.Media | ||
| { | ||
| public sealed partial class Video : IDisposable | ||
| { | ||
| private Topology _topology; | ||
| internal Topology Topology { get { return _topology; } } | ||
|
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| internal VideoSampleGrabber SampleGrabber { get; private set; } | ||
|
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| MediaType _mediaType; | ||
|
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| private void PlatformInitialize() | ||
| { | ||
| if (Topology != null) | ||
| return; | ||
|
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| MediaManagerState.CheckStartup(); | ||
|
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| MediaFactory.CreateTopology(out _topology); | ||
|
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| SharpDX.MediaFoundation.MediaSource mediaSource; | ||
| { | ||
| SourceResolver resolver; | ||
| MediaFactory.CreateSourceResolver(out resolver); | ||
|
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| ObjectType otype; | ||
| ComObject source; | ||
| resolver.CreateObjectFromURL(FileName, (int)SourceResolverFlags.MediaSource, null, out otype, | ||
| out source); | ||
| mediaSource = source.QueryInterface<SharpDX.MediaFoundation.MediaSource>(); | ||
| resolver.Dispose(); | ||
| source.Dispose(); | ||
| } | ||
|
|
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| PresentationDescriptor presDesc; | ||
| mediaSource.CreatePresentationDescriptor(out presDesc); | ||
|
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| for (var i = 0; i < presDesc.StreamDescriptorCount; i++) | ||
| { | ||
| Bool selected; | ||
| StreamDescriptor desc; | ||
| presDesc.GetStreamDescriptorByIndex(i, out selected, out desc); | ||
|
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||
| if (selected) | ||
| { | ||
| TopologyNode sourceNode; | ||
| MediaFactory.CreateTopologyNode(TopologyType.SourceStreamNode, out sourceNode); | ||
|
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| sourceNode.Set(TopologyNodeAttributeKeys.Source, mediaSource); | ||
| sourceNode.Set(TopologyNodeAttributeKeys.PresentationDescriptor, presDesc); | ||
| sourceNode.Set(TopologyNodeAttributeKeys.StreamDescriptor, desc); | ||
|
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| TopologyNode outputNode; | ||
| MediaFactory.CreateTopologyNode(TopologyType.OutputNode, out outputNode); | ||
|
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| var majorType = desc.MediaTypeHandler.MajorType; | ||
| if (majorType == MediaTypeGuids.Video) | ||
| { | ||
| Activate activate; | ||
|
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| SampleGrabber = new VideoSampleGrabber(); | ||
|
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| _mediaType = new MediaType(); | ||
|
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| _mediaType.Set(MediaTypeAttributeKeys.MajorType, MediaTypeGuids.Video); | ||
|
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| // Specify that we want the data to come in as RGB32. | ||
| _mediaType.Set(MediaTypeAttributeKeys.Subtype, new Guid("00000016-0000-0010-8000-00AA00389B71")); | ||
|
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| MediaFactory.CreateSampleGrabberSinkActivate(_mediaType, SampleGrabber, out activate); | ||
| outputNode.Object = activate; | ||
| } | ||
|
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| if (majorType == MediaTypeGuids.Audio) | ||
| { | ||
| Activate activate; | ||
| MediaFactory.CreateAudioRendererActivate(out activate); | ||
|
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| outputNode.Object = activate; | ||
| } | ||
|
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| _topology.AddNode(sourceNode); | ||
| _topology.AddNode(outputNode); | ||
| sourceNode.ConnectOutput(0, outputNode, 0); | ||
|
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| sourceNode.Dispose(); | ||
| outputNode.Dispose(); | ||
| } | ||
|
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| desc.Dispose(); | ||
| } | ||
|
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| presDesc.Dispose(); | ||
| mediaSource.Dispose(); | ||
| } | ||
|
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| private void PlatformDispose(bool disposing) | ||
| { | ||
| if (_topology != null) | ||
| { | ||
| _topology.Dispose(); | ||
| _topology = null; | ||
| } | ||
|
|
||
| if (SampleGrabber != null) | ||
| { | ||
| SampleGrabber.Dispose(); | ||
| SampleGrabber = null; | ||
| } | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| using Microsoft.Xna.Framework.Graphics; | ||
| using SharpDX; | ||
| using SharpDX.MediaFoundation; | ||
| using SharpDX.Win32; | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using System.Text; | ||
|
|
||
| namespace Microsoft.Xna.Framework.Media | ||
| { | ||
| public sealed partial class VideoPlayer : IDisposable | ||
| { | ||
| private static MediaSession _session; | ||
| private static SimpleAudioVolume _volumeController; | ||
| private static PresentationClock _clock; | ||
|
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| // HACK: Need SharpDX to fix this. | ||
| private static readonly Guid MRPolicyVolumeService = Guid.Parse("1abaa2ac-9d3b-47c6-ab48-c59506de784d"); | ||
| private static readonly Guid SimpleAudioVolumeGuid = Guid.Parse("089EDF13-CF71-4338-8D13-9E569DBDC319"); | ||
|
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| private static Callback _callback; | ||
|
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| private class Callback : IAsyncCallback | ||
| { | ||
| public void Dispose() | ||
| { | ||
| } | ||
|
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| public IDisposable Shadow { get; set; } | ||
| public void Invoke(AsyncResult asyncResultRef) | ||
| { | ||
| var ev = _session.EndGetEvent(asyncResultRef); | ||
|
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| // Trigger an "on Video Ended" event here if needed | ||
|
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| _session.BeginGetEvent(this, null); | ||
| } | ||
|
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| public AsyncCallbackFlags Flags { get; private set; } | ||
| public WorkQueueId WorkQueueId { get; private set; } | ||
| } | ||
|
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| private void PlatformInitialize() | ||
| { | ||
| MediaManagerState.CheckStartup(); | ||
| MediaFactory.CreateMediaSession(null, out _session); | ||
| } | ||
|
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| private Texture2D PlatformGetTexture() | ||
| { | ||
| var sampleGrabber = _currentVideo.SampleGrabber; | ||
|
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| var texData = sampleGrabber.TextureData; | ||
|
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| if (texData == null) | ||
| return null; | ||
|
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| // TODO: This could likely be optimized if we held on to the SharpDX Surface/Texture data, | ||
| // and set it on an XNA one rather than constructing a new one every time this is called. | ||
| var retTex = new Texture2D(Game.Instance.GraphicsDevice, _currentVideo.Width, _currentVideo.Height, false, SurfaceFormat.Bgr32); | ||
|
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| retTex.SetData(texData); | ||
|
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| return retTex; | ||
| } | ||
|
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| private void PlatformPause() | ||
| { | ||
| _session.Pause(); | ||
| } | ||
|
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| private void PlatformPlay() | ||
| { | ||
| // Cleanup the last song first. | ||
| if (State != MediaState.Stopped) | ||
| { | ||
| _session.Stop(); | ||
| _volumeController.Dispose(); | ||
| _clock.Dispose(); | ||
| } | ||
|
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| // Set the new song. | ||
| _session.SetTopology(0, _currentVideo.Topology); | ||
|
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| // Get the volume interface. | ||
| IntPtr volumeObj; | ||
|
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|
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| try | ||
| { | ||
| MediaFactory.GetService(_session, MRPolicyVolumeService, SimpleAudioVolumeGuid, out volumeObj); | ||
| } | ||
| catch | ||
| { | ||
| MediaFactory.GetService(_session, MRPolicyVolumeService, SimpleAudioVolumeGuid, out volumeObj); | ||
| } | ||
|
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| _volumeController = CppObject.FromPointer<SimpleAudioVolume>(volumeObj); | ||
| _volumeController.Mute = IsMuted; | ||
| _volumeController.MasterVolume = _volume; | ||
|
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| // Get the clock. | ||
| _clock = _session.Clock.QueryInterface<PresentationClock>(); | ||
|
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| //create the callback if it hasn't been created yet | ||
| if (_callback == null) | ||
| { | ||
| _callback = new Callback(); | ||
| _session.BeginGetEvent(_callback, null); | ||
| } | ||
|
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| // Start playing. | ||
| var varStart = new Variant(); | ||
| _session.Start(null, varStart); | ||
| } | ||
|
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| private void PlatformResume() | ||
| { | ||
| _session.Start(null, null); | ||
| } | ||
|
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| private void PlatformStop() | ||
| { | ||
| _session.Stop(); | ||
| } | ||
|
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| private void PlatformSetVolume() | ||
| { | ||
| if (_volumeController == null) | ||
| return; | ||
|
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| _volumeController.MasterVolume = _volume; | ||
| } | ||
|
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| private TimeSpan PlatformGetPlayPosition() | ||
| { | ||
| return TimeSpan.Zero; | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| using SharpDX.MediaFoundation; | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using System.Runtime.InteropServices; | ||
| using System.Text; | ||
|
|
||
| namespace Microsoft.Xna.Framework.Media | ||
| { | ||
| internal class VideoSampleGrabber : SharpDX.CallbackBase, SampleGrabberSinkCallback | ||
| { | ||
| internal byte[] TextureData { get; private set; } | ||
|
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| public void OnProcessSample(Guid guidMajorMediaType, int dwSampleFlags, long llSampleTime, long llSampleDuration, IntPtr sampleBufferRef, int dwSampleSize) | ||
| { | ||
| if (TextureData == null || TextureData.Length != dwSampleSize) | ||
| TextureData = new byte[dwSampleSize]; | ||
|
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| Marshal.Copy(sampleBufferRef, TextureData, 0, dwSampleSize); | ||
| } | ||
|
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| public void OnSetPresentationClock(PresentationClock presentationClockRef) | ||
| { | ||
|
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| } | ||
|
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| public void OnShutdown() | ||
| { | ||
|
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| } | ||
|
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| public void OnClockPause(long systemTime) | ||
| { | ||
|
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| } | ||
|
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| public void OnClockRestart(long systemTime) | ||
| { | ||
|
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| } | ||
|
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| public void OnClockSetRate(long systemTime, float flRate) | ||
| { | ||
|
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| } | ||
|
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| public void OnClockStart(long systemTime, long llClockStartOffset) | ||
| { | ||
|
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| } | ||
|
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| public void OnClockStop(long hnsSystemTime) | ||
| { | ||
|
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| } | ||
| } | ||
| } |