public WmvVideoStream(string filepath)
{
this.filepath = filepath;
asf = new AsfFile(filepath);
var audioStream = new AsfStream(asf, AsfStreamType.asfAudio, 0);
soundStream = new AsfAudio(audioStream).GetWaveStream();
video = new AsfImageLoader(asf);
}
public void Rewind()
{
Dispose();
asf = new AsfFile(filepath);
var audioStream = new AsfStream(asf, AsfStreamType.asfAudio, 0);
soundStream = new AsfAudio(audioStream).GetWaveStream();
video = new AsfImageLoader(asf);
}
public AsfImageLoader(AsfFile file)
{
stream = new AsfStream(file, AsfStreamType.asfImage, 0);
WMUtils.WMCreateSyncReader(IntPtr.Zero, Rights.Playback, out syncReader);
syncReader.OpenStream(new AsfIStream(stream));
syncReader.SetReadStreamSamples((short)stream.Configuration.AsfVideoStreamId, false);
Width = stream.Configuration.ImageWidth;
Height = stream.Configuration.ImageHeight;
}
public AsfImage(AsfStream asfStream)
{
if (asfStream.StreamType != AsfStreamType.asfImage)
throw new ArgumentException();
_asfStream = asfStream;
_asfMemoryStream = null;
_sampleBitmap = null;
}
public void CreateImageManual()
{
using(AsfStream asfStream = new AsfStream(AsfStreamType.asfImage, testVideoFileName, 1.0))
using (AsfImage asfImage = new AsfImage(asfStream))
{
Bitmap bitmap = asfImage.GetImage();
Assert.AreNotEqual(bitmap, null);
}
}
public AsfImage(AsfStream asfStream)
{
if (asfStream.StreamType != AsfStreamType.asfImage)
{
throw new ArgumentException();
}
_asfStream = asfStream;
_asfMemoryStream = null;
_sampleBitmap = null;
}
public void CreatePlayableWaveMemoryStreamManual()
{
//WaveStreamFromFile
using(AsfStream asfStream = new AsfStream(AsfStreamType.asfAudio, testVideoFileName, 1.0, 4.0))
using (AsfAudio asfAudio = new AsfAudio(asfStream))
{
WaveMemoryStream waveMemoryStream = asfAudio.GetWaveStream();
Assert.IsNotNull(waveMemoryStream);
//Soundplayer will throw an exception if this is not a valid Wave stream
SoundPlayer soundPlayer = new SoundPlayer(waveMemoryStream);
}
}
void CreateImage(double timeInSeconds)
{
try
{
using(AsfStream asfStream = new AsfStream(_asfFile, AsfStreamType.asfImage, timeInSeconds))
using(AsfImage asfImage = new AsfImage(asfStream))
_bitmap = asfImage.GetImage();
}
catch (Exception)
{
_bitmap = null;
}
_resetEvent.Set(); // signal that worker is done
}
public void ValidateAsfStreamLength()
{
AsfStream asfStream = new AsfStream(AsfStreamType.asfStream, testVideoFileName, 1.0, 2.0);
int bytesRead = 0;
int totalBytesRead = 0;
byte[] data = new byte[8192];
do
{
bytesRead = asfStream.Read(data, 0, data.Length);
totalBytesRead += bytesRead;
} while(bytesRead > 0);
Assert.AreEqual(asfStream.Length, totalBytesRead);
}
public void ComputeWaveForm(UInt32 presentationTime)
{
try
{
double timeInSeconds = presentationTime;
timeInSeconds /= 1000;
float[] samples;
using (AsfStream asfStream = new AsfStream(AsfStreamType.asfAudio, ViewModelLocator.MainStatic.FileName, timeInSeconds))
using (AsfAudio asfAudio = new AsfAudio(asfStream))
{
int sampleCountForTwoSeconds = (int) (2 * asfStream.Configuration.AudioSampleRate);
samples = asfAudio.GetSamples(sampleCountForTwoSeconds).Select(sample => sample.Left).ToArray();
}
Dispatcher.BeginInvoke((Action)(() => DrawAudio(samples)));
}
catch (AsfStreamException) { }
}
private void WaveFormPlayButton_Click(object sender, RoutedEventArgs e)
{
try
{
double timeInSeconds = (double)startTimeOffset / 1000;
using(AsfStream asfStream = new AsfStream(AsfStreamType.asfAudio, ViewModelLocator.MainStatic.FileName, timeInSeconds))
using (AsfAudio asfAudio = new AsfAudio(asfStream))
{
//play a two second sample
byte[] data = asfAudio.GetSampleBytes(2 * (int) asfStream.Configuration.AudioSampleRate * asfStream.Configuration.AudioChannels);
WaveMemoryStream mwav = new WaveMemoryStream(data, (int)asfStream.Configuration.AudioSampleRate, asfStream.Configuration.AudioBitsPerSample, asfStream.Configuration.AudioChannels);
SoundPlayer sp = new SoundPlayer(mwav);
sp.Play();
}
}
catch (AsfStreamException) { }
}
public void Dispose()
{
if (syncReader != null)
Marshal.FinalReleaseComObject(syncReader);
syncReader = null;
if (stream != null)
stream.Dispose();
stream = null;
}
public static Bitmap FromFile(string fileName, double offset)
{
using (AsfStream asfStream = new AsfStream(AsfStreamType.asfImage, fileName, offset))
using (AsfImage asfImage = new AsfImage(asfStream))
return asfImage.GetImage();
}
public AsfAudio(AsfStream asfStream)
{
_asfStream = asfStream;
_asfMemoryStream = null;
_sampleBuffer = new Queue<AudioSample>();
}
public AsfAudio(AsfStream asfStream)
{
_asfStream = asfStream;
_asfMemoryStream = null;
_sampleBuffer = new Queue <AudioSample>();
}
public void CreateImageAsfStream()
{
AsfStream asfStream = new AsfStream(AsfStreamType.asfImage, testVideoFileName, 1.0, 2.0);
Assert.IsNotNull(asfStream);
}
public void TryCreateInvalidFileNameAsfStream()
{
AsfStream asfStream = new AsfStream(AsfStreamType.asfStream, "", 0.0, 1.0);
}
public static WaveMemoryStream FromFile(string fileName, double startOffset, double endOffset)
{
using (AsfStream asfStream = new AsfStream(AsfStreamType.asfAudio, fileName, startOffset, endOffset))
using (AsfAudio asfAudio = new AsfAudio(asfStream))
return asfAudio.GetWaveStream();
}
public static Bitmap FromFile(string fileName, double offset)
{
using (AsfStream asfStream = new AsfStream(AsfStreamType.asfImage, fileName, offset))
using (AsfImage asfImage = new AsfImage(asfStream))
return(asfImage.GetImage());
}
public void IterateAudioSamples()
{
AsfStream asfStream = new AsfStream(AsfStreamType.asfAudio, testVideoFileName, 1.0, 10.0);
AsfAudio asfAudio = new AsfAudio(asfStream);
int requestedSampleCount = 10000;
int receivedSampleCount = 0;
foreach (AudioSample audioSample in asfAudio.GetSamples(requestedSampleCount))
{
receivedSampleCount++;
}
Assert.AreEqual(requestedSampleCount, receivedSampleCount);
}
public void TryCreateNotCoveredRangeAsfStream()
{
AsfStream asfStream = new AsfStream(AsfStreamType.asfAudio, testVideoFileName, 1.0, 5000);
}
public void TryCreateInvalidRangeAsfStream()
{
AsfStream asfStream = new AsfStream(AsfStreamType.asfAudio, testVideoFileName, -1.0, 4.0);
}
public void TryCreateImageFromAudioStream()
{
using (AsfStream asfStream = new AsfStream(AsfStreamType.asfAudio, testVideoFileName, 1.0))
{
AsfImage asfImage = new AsfImage(asfStream);
}
}
public static WaveMemoryStream FromFile(string fileName, double startOffset, double endOffset)
{
using (AsfStream asfStream = new AsfStream(AsfStreamType.asfAudio, fileName, startOffset, endOffset))
using (AsfAudio asfAudio = new AsfAudio(asfStream))
return(asfAudio.GetWaveStream());
}
public void GetAudioSamples()
{
AsfStream asfStream = new AsfStream(AsfStreamType.asfAudio, testVideoFileName, 1.0, 10.0);
AsfAudio asfAudio = new AsfAudio(asfStream);
int requestedSampleCount = 10000;
byte[] data = asfAudio.GetSampleBytes(requestedSampleCount);
Assert.AreEqual(requestedSampleCount, data.Length);
}
public void TryCreateInvalidFileAsfStream()
{
AsfStream asfStream = new AsfStream(AsfStreamType.asfStream, testBadFileName, 0, 1.0);
}
