public virtual bool SetPlaybackRate(double value)
{
if (_graphBuilder == null)
{
return(false);
}
IMediaSeeking mediaSeeking = _graphBuilder as IMediaSeeking;
if (mediaSeeking == null)
{
return(false);
}
double currentRate;
if (mediaSeeking.GetRate(out currentRate) == 0 && currentRate != value)
{
bool result = mediaSeeking.SetRate(value) == 0;
if (result)
{
FirePlaybackStateChanged();
}
return(result);
}
return(false);
}
public CAviDS(string filename, double playSpeed)
{
builder = new FilterGraph() as IGraphBuilder;
grabber = new SampleGrabber() as ISampleGrabber;
mediaType = new AMMediaType();
mediaType.majorType = MediaType.Video;
mediaType.subType = MediaSubType.RGB32;
mediaType.formatType = FormatType.VideoInfo;
DsError.ThrowExceptionForHR(grabber.SetMediaType(mediaType));
DsError.ThrowExceptionForHR(builder.AddFilter(grabber as IBaseFilter, "Sample Grabber(DTXMania)"));
DsError.ThrowExceptionForHR(builder.RenderFile(filename, null));
CDirectShow.ConnectNullRendererFromSampleGrabber(builder, grabber as IBaseFilter);
if (builder is IVideoWindow videoWindow)
{
videoWindow.put_AutoShow(OABool.False);
}
DsError.ThrowExceptionForHR(grabber.GetConnectedMediaType(mediaType));
videoInfo = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.formatPtr, typeof(VideoInfoHeader));
nWidth = videoInfo.BmiHeader.Width;
nHeight = videoInfo.BmiHeader.Height;
seeker = builder as IMediaSeeking;
DsError.ThrowExceptionForHR(seeker.GetDuration(out nMediaLength));
DsError.ThrowExceptionForHR(seeker.SetRate(playSpeed / 20.0));
control = builder as IMediaControl;
filter = builder as IMediaFilter;
grabber.SetBufferSamples(BufferThem: true);
Run();
Pause();
bPlaying = false;
bPause = false;
}
public void SetSpeed(double rate)
{
if (ms != null)
{
ms.SetRate(rate);
}
}
private void DoSetRate(double newRate)
{
int hr;
IMediaControl mc = (IMediaControl)currentFilterGraph;
// Stop
hr = mc.Stop();
DsError.ThrowExceptionForHR(hr);
// Stop ASFWriter
hr = currentOutputFilter.Stop();
DsError.ThrowExceptionForHR(hr);
if (UsingSBEFilter)
{
IStreamBufferMediaSeeking mSeek = (IStreamBufferMediaSeeking)currentSBEfilter;
DsLong lDouble = DsLong.FromInt64(Convert.ToInt64(newRate));
hr = mSeek.SetRate(lDouble);
DsError.ThrowExceptionForHR(hr);
}
else
{
// IMediaSeeking is used on the filter graph which distributes the calls
IMediaSeeking mSeek = (IMediaSeeking)currentFilterGraph;
hr = mSeek.SetRate(newRate);
DsError.ThrowExceptionForHR(hr);
}
// Start ASF
hr = currentOutputFilter.Run(0);
DsError.ThrowExceptionForHR(hr);
// Run again
hr = mc.Run();
DsError.ThrowExceptionForHR(hr);
}
void ITimeShifting.SetRate(double rate)
{
if (rate >= 0 && rate < 0.1)
{
rate = 0.1;
}
else if (rate < 0 && rate > -0.1)
{
rate = -0.1;
}
int hr = 0;
IStreamBufferMediaSeeking2 mediaSeeking2 = this.streamBufferSource as IStreamBufferMediaSeeking2;
if (mediaSeeking2 != null)
{
//mediaSeeking2.SetRateEx(rate, 25);
hr = mediaSeeking2.SetRateEx(rate, 25);
if (hr == 0)
{
return;
}
}
IStreamBufferMediaSeeking mediaSeeking1 = this.streamBufferSource as IStreamBufferMediaSeeking;
if (mediaSeeking1 != null)
{
hr = mediaSeeking1.SetRate(rate);
if (hr == 0)
{
return;
}
}
IMediaSeeking mediaSeeking0 = this.graphBuilder2 as IMediaSeeking;
if (mediaSeeking0 != null)
{
hr = mediaSeeking0.SetRate(rate);
if (hr == 0)
{
return;
}
}
}
public virtual bool SetPlaybackRate(double value)
{
if (_graphBuilder == null || _ms == null)
{
return(false);
}
double currentRate;
if (_ms.GetRate(out currentRate) == 0 && currentRate != value)
{
bool result = _ms.SetRate(value) == 0;
if (result)
{
FirePlaybackStateChanged();
}
return(result);
}
return(false);
}
/// <summary>
/// Test Get/Set Rate
/// </summary>
void TestRate()
{
int hr;
double dRate1, dRate2;
// Read the current play rate
hr = m_ims.GetRate(out dRate1);
Marshal.ThrowExceptionForHR(hr);
// Change the rate
hr = m_ims.SetRate(dRate1 + 1);
Marshal.ThrowExceptionForHR(hr);
// Re-read the rate
hr = m_ims.GetRate(out dRate2);
Marshal.ThrowExceptionForHR(hr);
// See if we got the right answer
Debug.Assert(dRate1 + 1 == dRate2, "Get/Set Rate");
}
private void open()
{
int hr;
if (this.GraphBuilder == null)
{
this.GraphBuilder = (IGraphBuilder) new FilterGraph();
hr = GraphBuilder.RenderFile(file, null);//读取文件
DsError.ThrowExceptionForHR(hr);
this.MediaControl = (IMediaControl)this.GraphBuilder;
this.MediaEventEx = (IMediaEventEx)this.GraphBuilder;
MediaSeeking = (IMediaSeeking)this.GraphBuilder;
MediaSeeking.SetTimeFormat(TIME_FORMAT_FRAME);
MediaSeeking.SetRate(0.3);
this.VideoFrameStep = (IVideoFrameStep)this.GraphBuilder;
// MediaPosition= (IMediaPosition)this.GraphBuilder;
this.VideoWindow = this.GraphBuilder as IVideoWindow;
this.BasicVideo = this.GraphBuilder as IBasicVideo;
this.BasicAudio = this.GraphBuilder as IBasicAudio;
hr = this.MediaEventEx.SetNotifyWindow(this.Handle, WM_GRAPHNOTIFY, IntPtr.Zero);
DsError.ThrowExceptionForHR(hr);
hr = this.VideoWindow.put_Owner(this.Handle);
DsError.ThrowExceptionForHR(hr);
hr = this.VideoWindow.put_WindowStyle(WindowStyle.Child |
WindowStyle.ClipSiblings | WindowStyle.ClipChildren);
DsError.ThrowExceptionForHR(hr);
this.Focus();
hr = InitVideoWindow(1, 1);
DsError.ThrowExceptionForHR(hr);
long time;
MediaSeeking.GetDuration(out time);
label20.Text = time.ToString();
trackBar1.SetRange(0, (int)time);
t = new Thread(new ThreadStart(updateTimeBarThread));
}
}
protected virtual HRESULT PreparePlayback()
{
m_MediaControl = (IMediaControl)m_GraphBuilder;
m_BasicVideo = (IBasicVideo)m_GraphBuilder;
m_MediaSeeking = (IMediaSeeking)m_GraphBuilder;
m_VideoWindow = (IVideoWindow)m_GraphBuilder;
m_MediaEventEx = (IMediaEventEx)m_GraphBuilder;
m_FrameStep = (IVideoFrameStep)m_GraphBuilder;
m_MediaPosition = (IMediaPosition)m_GraphBuilder;
SettingUpVideoWindow();
int hr = m_MediaEventEx.SetNotifyWindow(m_EventControl.Handle, WM_GRAPHNOTIFY, Marshal.GetIUnknownForObject(this));
Debug.Assert(hr == 0);
SetVolume(m_bMute ? -10000 : m_iVolume);
if (m_dRate != 1.0)
{
m_MediaSeeking.SetRate(m_dRate);
m_MediaSeeking.GetRate(out m_dRate);
}
OnPlaybackReady?.Invoke(this, EventArgs.Empty);
return((HRESULT)hr);
}
void IPlayer.SetRate(double rate)
{
if (rate >= 0 && rate < 0.1)
{
rate = 0.1;
}
else if (rate < 0 && rate > -0.1)
{
rate = -0.1;
}
int hr = 0;
IMediaSeeking mediaSeeking = this.graphBuilder as IMediaSeeking;
if (mediaSeeking != null)
{
hr = mediaSeeking.SetRate(rate);
if (hr == 0)
{
return;
}
}
}
public CAviDS(string filename, double playSpeed)
{
int hr = 0x0;
builder = (IGraphBuilder) new FilterGraph();
#region [Sample Grabber]
{
grabber = new SampleGrabber() as ISampleGrabber;
mediaType = new AMMediaType();
mediaType.majorType = MediaType.Video;
mediaType.subType = MediaSubType.RGB32;
mediaType.formatType = FormatType.VideoInfo;
hr = grabber.SetMediaType(mediaType);
DsError.ThrowExceptionForHR(hr);
hr = builder.AddFilter((IBaseFilter)grabber, "Sample Grabber");
DsError.ThrowExceptionForHR(hr);
}
#endregion
hr = builder.RenderFile(filename, null);
DsError.ThrowExceptionForHR(hr);
// Null レンダラに接続しないとウィンドウが表示される。
// また、レンダリングを行わないため処理速度を向上できる。
CDirectShow.ConnectNullRendererFromSampleGrabber(builder, grabber as IBaseFilter);
CDirectShow.tグラフを解析しデバッグ出力する(builder);
IVideoWindow videoWindow = builder as IVideoWindow;
if (videoWindow != null)
{
videoWindow.put_AutoShow(OABool.False);
}
#region [Video Info]
{
hr = grabber.GetConnectedMediaType(mediaType);
DsError.ThrowExceptionForHR(hr);
videoInfo = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.formatPtr, typeof(VideoInfoHeader));
nWidth = videoInfo.BmiHeader.Width;
nHeight = videoInfo.BmiHeader.Height;
}
#endregion
#region [ Seeker ]
{
seeker = builder as IMediaSeeking;
hr = seeker.GetDuration(out nMediaLength);
DsError.ThrowExceptionForHR(hr);
hr = seeker.SetRate(playSpeed / 20);
DsError.ThrowExceptionForHR(hr);
}
#endregion
#region [Control]
{
control = builder as IMediaControl;
}
#endregion
#region [Filter]
{
filter = builder as IMediaFilter;
}
#endregion
grabber.SetBufferSamples(true);
this.Run();
this.Pause();
bPlaying = false;
bPause = false; // 外見えには演奏停止している。PAUSE中として外に見せないこと。
}
protected virtual HRESULT PreparePlayback()
{
m_MediaControl = (IMediaControl)m_GraphBuilder;
m_BasicVideo = (IBasicVideo)m_GraphBuilder;
m_MediaSeeking = (IMediaSeeking)m_GraphBuilder;
m_VideoWindow = (IVideoWindow)m_GraphBuilder;
m_MediaEventEx = (IMediaEventEx)m_GraphBuilder;
m_FrameStep = (IVideoFrameStep)m_GraphBuilder;
SettingUpVideoWindow();
int hr = m_MediaEventEx.SetNotifyWindow(m_EventControl.Handle, WM_GRAPHNOTIFY, Marshal.GetIUnknownForObject(this));
Debug.Assert(hr == 0);
SetVolume(m_bMute ? -10000 : m_iVolume);
if (m_dRate != 1.0)
{
m_MediaSeeking.SetRate(m_dRate);
m_MediaSeeking.GetRate(out m_dRate);
}
if (OnPlaybackReady != null) OnPlaybackReady(this, EventArgs.Empty);
return (HRESULT)hr;
}
