void TestTime()
{
int hr;
long TimeStart1, TimeEnd1;
long TimeStart2, TimeEnd2;
// Read the value
hr = m_ims.GetTime(out TimeStart1, out TimeEnd1);
Marshal.ThrowExceptionForHR(hr);
// Change the value
hr = m_ims.SetTime(new DsLong(TimeStart1 + 1), new DsLong(TimeEnd1 - 1));
Marshal.ThrowExceptionForHR(hr);
// Re-read the value
hr = m_ims.GetTime(out TimeStart2, out TimeEnd2);
Marshal.ThrowExceptionForHR(hr);
// Check to see if the change took
Debug.Assert(TimeStart1 + 1 == TimeStart2, "Get/Set time start");
Debug.Assert(TimeEnd1 - 1 == TimeEnd2, "Get/Set time End");
// Try using nulls
hr = m_ims.SetTime(null, null);
Marshal.ThrowExceptionForHR(hr);
// Read the time, should fail (because of the nulls)
hr = m_ims.GetTime(out TimeStart1, out TimeEnd1);
Debug.Assert(hr == DsResults.E_SampleTimeNotSet, "Get/Set time null");
// Put it back to where it started
hr = m_ims.SetTime(new DsLong(TimeStart1), new DsLong(TimeEnd1));
Marshal.ThrowExceptionForHR(hr);
}
public MediaSample(IMediaSample sample)
{
m_Size = sample.GetSize();
m_ActualDataLength = sample.GetActualDataLength();
m_IsSyncPoint = sample.IsSyncPoint() == 0;
m_IsPreroll = sample.IsPreroll() == 0;
m_IsDiscontinuity = sample.IsDiscontinuity() == 0;
sample.GetTime(out m_TimeStart, out m_TimeEnd);
sample.GetMediaTime(out m_MediaTimeStart, out m_MediaTimeEnd);
m_Buffer = Marshal.AllocCoTaskMem(m_Size);
}
public int SampleCB(double SampleTime, IMediaSample pSample)
{
DateTime dt = DateTime.Now;
lock (this)
{
sb.AppendFormat("{0:T}.{1:D3}: ", dt, dt.Millisecond);
sb.AppendFormat("SampleTime={0:G4}, ", SampleTime);
if (pSample != null)
{
long start = 0, end = 0;
pSample.GetTime(out start, out end);
sb.AppendFormat("Time(start={0}, end={1}), ", start, end);
pSample.GetMediaTime(out start, out end);
sb.AppendFormat("MediaTime(start={0}, end={1}), ", start, end);
int len = pSample.GetActualDataLength();
sb.AppendFormat("data length={0}, ", len);
bool syncpoint = pSample.IsSyncPoint() == 0;
sb.AppendFormat("keyframe={0}", syncpoint);
if (pSample.IsDiscontinuity() == 0)
{
sb.Append(", Discontinuity");
}
if (pSample.IsPreroll() == 0)
{
sb.Append(", Preroll");
}
int n = Math.Min(len, 8);
IntPtr pbuf;
if (pSample.GetPointer(out pbuf) == 0)
{
byte[] buf = new byte[n];
Marshal.Copy(pbuf, buf, 0, n);
sb.Append(", Data=");
for (int i = 0; i < n; i++)
{
sb.AppendFormat("{0:X2}", buf[i]);
}
sb.Append("...");
}
}
else
{
sb.Append("pSample==NULL!");
}
sb.Append(Environment.NewLine);
}
Marshal.ReleaseComObject(pSample);
return(0);
}
private int PopulateMediaSample(IMediaSample pSample)
{
int hr;
long tStart, tStop;
// Read the file offsets they are seeking
hr = pSample.GetTime(out tStart, out tStop);
if (hr >= 0)
{
IntPtr pBuffer = IntPtr.Zero;
// Turn the sample time into a file position and length
long llPos = tStart / UNIT;
int lLength = (int)((tStop - tStart) / UNIT);
int iBufferSize = pSample.GetSize();
Debug.Write(string.Format(" pos: {0} len: {1} size: {2}", llPos, lLength, iBufferSize));
// Make sure the buffer they passed it big enough to hold
// all the data they requested
if (iBufferSize >= lLength)
{
// This is where we store the data
hr = pSample.GetPointer(out pBuffer);
}
else
{
hr = E_BufferTooSmall;
}
if (hr >= 0)
{
int iBytesRead;
// Read the data into the buffer
hr = SyncReadInternal(llPos, lLength, pBuffer, out iBytesRead);
if (hr >= 0)
{
// How much of the buffer we used.
pSample.SetActualDataLength(iBytesRead);
Debug.Write(string.Format(" read: {0}", iBytesRead));
}
}
}
return(hr);
}
public static void CopySample(IMediaSample src, IMediaSample dest, bool copySamples)
{
var sourceSize = src.GetActualDataLength();
if (copySamples)
{
IntPtr sourceBuffer;
src.GetPointer(out sourceBuffer);
IntPtr destBuffer;
dest.GetPointer(out destBuffer);
CopyMemory(destBuffer, sourceBuffer, sourceSize);
}
// Copy the sample times
long start, end;
if (src.GetTime(out start, out end) == S_OK)
{
dest.SetTime(start, end);
}
if (src.GetMediaTime(out start, out end) == S_OK)
{
dest.SetMediaTime(start, end);
}
// Copy the media type
AMMediaType mediaType;
var changed = src.GetMediaType(out mediaType) == 0;
if (changed)
{
dest.SetMediaType(mediaType);
DsUtils.FreeAMMediaType(mediaType);
}
dest.SetSyncPoint(src.IsSyncPoint() == S_OK);
dest.SetPreroll(src.IsPreroll() == S_OK);
dest.SetDiscontinuity(src.IsDiscontinuity() == S_OK);
// Copy the actual data length
dest.SetActualDataLength(sourceSize);
}
public MediaSample(IMediaSample sample)
{
m_Size = sample.GetSize();
m_ActualDataLength = sample.GetActualDataLength();
m_IsSyncPoint = sample.IsSyncPoint() == 0;
m_IsPreroll = sample.IsPreroll() == 0;
m_IsDiscontinuity = sample.IsDiscontinuity() == 0;
m_HasTime = sample.GetTime(out m_TimeStart, out m_TimeEnd) == 0;
m_HasMediaTime = sample.GetMediaTime(out m_MediaTimeStart, out m_MediaTimeEnd) == 0;
m_Buffer = Marshal.AllocCoTaskMem(m_Size);
// Copy the media type
AMMediaType mediaType;
if (sample.GetMediaType(out mediaType) == 0)
{
m_MediaType = mediaType;
}
}
public static void CopySample(IMediaSample src, IMediaSample dest, bool copySamples)
{
var sourceSize = src.GetActualDataLength();
if (copySamples)
{
IntPtr sourceBuffer;
src.GetPointer(out sourceBuffer);
IntPtr destBuffer;
dest.GetPointer(out destBuffer);
CopyMemory(destBuffer, sourceBuffer, sourceSize);
}
// Copy the sample times
long start, end;
if (src.GetTime(out start, out end) == S_OK)
{
dest.SetTime(start, end);
}
if (src.GetMediaTime(out start, out end) == S_OK)
{
dest.SetMediaTime(start, end);
}
// Copy the media type
AMMediaType mediaType;
src.GetMediaType(out mediaType);
dest.SetMediaType(mediaType);
DsUtils.FreeAMMediaType(mediaType);
dest.SetSyncPoint(src.IsSyncPoint() == S_OK);
dest.SetPreroll(src.IsPreroll() == S_OK);
dest.SetDiscontinuity(src.IsDiscontinuity() == S_OK);
// Copy the actual data length
dest.SetActualDataLength(sourceSize);
}
public int SampleCB(double SampleTime, IMediaSample pSample)
{
if (!bProcess)
{
lastSampleTime = SampleTime;
return(WinAPI.E_FAIL);
}
// internal stats
++sampleIndex;
long tStart, tEnd;
pSample.GetMediaTime(out tStart, out tEnd);
Debug.Assert(tStart < tEnd);
Debug.Assert(tStart > lastMediaTime);
sampleProcessed += tEnd - tStart;
sampleDropped += tStart - lastMediaTime - 1;
lastMediaTime = tEnd - 1;
int dataLen = pSample.GetActualDataLength();
IntPtr bufPtr;
int hr = pSample.GetPointer(out bufPtr);
Debug.Assert(0 == hr);
// BEGIN TRACE
int bufSize = pSample.GetSize();
long timeStart, timeEnd;
pSample.GetTime(out timeStart, out timeEnd);
string msg = string.Format(
"SampleCB ({0}) {1}, sampleTime:{2} datalen:{3} bufsize:{4} mediaTime:{5}-{6} time:{7}-{8}",
name, sampleIndex, SampleTime, dataLen, bufSize, tStart, tEnd, timeStart, timeEnd);
Trace.WriteLine(msg);
if (tStart - lastMediaTime - 1 > 0)
{
msg = string.Format("!!! Frame drop: {0}", tStart - lastMediaTime - 1 > 0);
Trace.WriteLine(msg);
}
//END TRACE
byte[] buf = new byte[dataLen];
Marshal.Copy(bufPtr, buf, 0, dataLen);
if (file != null)
{
file.Write(buf, 0, dataLen);
}
//DBG - simulate encoding error
//if (sampleIndex > 100)
// goto STOP_CAPTURE;
if (mediaState != null && mediaState.mpeg2Enc != null)
{
PrimoSoftware.AVBlocks.Transcoder enc = mediaState.mpeg2Enc;
MediaSample inputSample = new MediaSample();
inputSample.Buffer = new MediaBuffer(buf);
inputSample.StartTime = Math.Max(SampleTime, 0);
//TODO: end time
try
{
bool pushed = false;
// transcoder.Push() is not threads safe.
// lock (enc){ } ensure that only one thread is calling transcoder.Push()
lock (enc)
{
pushed = enc.Push(StreamNumber, inputSample);
}
if (pushed)
{
return(0);
}
}
catch (Exception ex)
{
System.Diagnostics.Trace.WriteLine(ex.ToString());
}
Trace.WriteLine("PushSample FAILED");
}
//STOP_CAPTURE:
Trace.WriteLine("SampleCB: Before Post STOP_CAPTURE");
WinAPI.PostMessage(MainWindow, Util.WM_STOP_CAPTURE, new IntPtr(streamNumber), IntPtr.Zero);
Trace.WriteLine("SampleCB: After Post STOP_CAPTURE");
bProcess = false;
return(WinAPI.E_FAIL);
} // end of SampleCB
public int SyncReadAligned(IMediaSample pSample)
{
Monitor.Enter(this);
long start, end;
long mediaStart, mediaEnd;
int size;
int offset;
int hr;
int ans = S_OK;
IntPtr ptr = new IntPtr();
hr = pSample.GetPointer(out ptr);
hr = pSample.GetTime(out start, out end);
hr = pSample.GetMediaTime(out mediaStart, out mediaEnd);
size = pSample.GetSize();
int rescale = DS_RESCALE_FACTOR; // (int)((end - start) / size);
//start += startTime;
offset = (int)(start / rescale);
if ((offset + size) > reader.BufferSize)
{
Memory.Set(ptr, offset, size);
log.InfoFormat("SyncReadAligned went off the end ({0}, {1}, {2})", offset, (offset + size), reader.BufferSize);
size = (int)(reader.BufferSize - offset);
ans = S_FALSE;
}
if ((offset + size) > reader.BufferEnd)
{
log.InfoFormat("SyncReadAligned wait for buffer ({0}, {1}, {2})", offset, (offset + size), reader.BufferEnd);
BufferData(offset + size);
}
log.InfoFormat("SyncReadAligned ({0} / {1} ({2}), {3} / {4}) - {5}, {6}", start, mediaStart, offset, end, mediaEnd, size, rescale);
byte[] buffer = reader.GetBuffer();
Marshal.Copy(buffer, offset, ptr, size);
reader.ReleaseBuffer();
Monitor.Exit(this);
return ans;
}
public int Request(IMediaSample pSample, IntPtr dwUser)
{
// queues up a request for a new sample
Monitor.Enter(this);
long start, end;
pSample.GetTime(out start, out end);
log.InfoFormat("Request ({0}, {1} - {2})", start, end, pSample.GetSize());
sampleList.Add(pSample);
samplePtrList.Add(dwUser);
Monitor.Exit(this);
return S_OK;
}
