/// <summary>
/// Read 'duration' ticks from the start of the stream. Note: payload param is only significant for audio and video
/// </summary>
public DBStreamPlayer(int streamID, long duration, PayloadType payload)
{
this.streamID = streamID;
currentIndex = 0;
indexCount = 0;
streamEndReached = false;
//Get Stream parameters
int maxFrameSize;
int maxFrameCount;
int maxBufferSize;
DatabaseUtility.GetStreamStatistics(streamID, out firstTick, out maxFrameSize, out maxFrameCount, out maxBufferSize);
//Allocate buffer and indices array
frame = new BufferChunk(maxBufferSize);
indices = new Index[maxFrameCount];
//Init start and end
this.start = firstTick;
this.end = start + duration;
startingTick = start;
endingTick = start - 1;
//Set the stream MediaType
mediaType = null;
if (payload == PayloadType.dynamicVideo)
{
mediaType = ProfileUtility.StreamIdToVideoMediaType(streamID);
}
else if (payload == PayloadType.dynamicAudio)
{
mediaType = ProfileUtility.StreamIdToAudioMediaType(streamID);
}
}
/// <summary>
/// Make sure all the streams for this StreamMgr have compatible compressed media types.
/// Also check against the media type, optionally supplied as an argument.
/// Log details about any problems we find.
/// </summary>
/// In no-recompression scenarios including the preview we check this and warn the user,
/// though we can't do anything about it.
/// <param name="prevMT">An additional MediaType to check against, or null if none</param>
/// <param name="log">Where to write details about any problems found</param>
/// <returns>always true</returns>
public bool ValidateCompressedMT(MediaType prevMT, LogMgr log)
{
MediaType lastMT = prevMT;
for (int i = 0; i < streamPlayers.Length; i++)
{
if (payload == PayloadType.dynamicVideo)
{
if (!ProfileUtility.CompareVideoMediaTypes((MediaTypeVideoInfo)streamPlayers[i].StreamMediaType, (MediaTypeVideoInfo)lastMT))
{
Debug.WriteLine("incompatible video mediatype found.");
log.WriteLine("Warning: A change in the media type was found in the video stream from " + this.cname +
" beginning at " + streamPlayers[i].Start.ToString() + ". Without recompression, this may cause " +
" a problem with the output. Using recompression should resolve the issue. ");
log.ErrorLevel = 5;
}
}
else if (payload == PayloadType.dynamicAudio)
{
if (!ProfileUtility.CompareAudioMediaTypes((MediaTypeWaveFormatEx)streamPlayers[i].StreamMediaType, (MediaTypeWaveFormatEx)lastMT))
{
Debug.WriteLine("incompatible mediatype found.");
log.WriteLine("Warning: A change in the media type was found in the audio stream from " + this.cname +
" beginning at " + streamPlayers[i].Start.ToString() + ". Without recompression, this may cause " +
" a problem with the output. Using recompression should resolve the issue. ");
log.ErrorLevel = 5;
}
}
lastMT = streamPlayers[i].StreamMediaType;
}
return(true);
}
private static void verifyStream(DBStreamPlayer streamPlayer)
{
BufferChunk frame;
long streamTime;
BufferChunk sample;
bool keyframe;
long refTime = 0;
long lastStreamTime = 0;
long timediff = 0;
DateTime dt;
while (streamPlayer.GetNextFrame(out frame, out streamTime))
{
try {
sample = ProfileUtility.FrameToSample(frame, out keyframe);
}
catch (Exception ex) {
dt = new DateTime(streamTime);
Console.WriteLine("FrameToSample failed at: " + dt.ToString() + "; Sampletime=" + streamTime.ToString());
Console.WriteLine(ex.ToString());
continue;
}
if (refTime == 0)
{
refTime = streamTime;
}
timediff = streamTime - lastStreamTime;
// Look for large intervals
//if (timediff > 500000L) {
// dt = new DateTime(streamTime);
// Console.WriteLine("Sample: " + dt.ToString() + "; Sampletime=" + streamTime.ToString() + "; length=" + sample.Length.ToString() + ";interval=" + timediff.ToString());
//}
// Look for large samples
//if (sample.Length > 90000) {
// dt = new DateTime(streamTime);
// Console.WriteLine("Sample: " + dt.ToString() + "; Sampletime=" + streamTime.ToString() + "; length=" + sample.Length.ToString() + ";interval=" + timediff.ToString());
//}
// Look for small samples
//if (sample.Length < 300) {
// dt = new DateTime(streamTime);
// Console.WriteLine("Sample: " + dt.ToString() + "; Sampletime=" + streamTime.ToString() + "; length=" + sample.Length.ToString() + ";interval=" + timediff.ToString());
//}
lastStreamTime = streamTime;
}
DateTime dt1 = new DateTime(refTime);
DateTime dt2 = new DateTime(lastStreamTime);
Console.WriteLine("Started at " + dt1.ToString() + "; Ended at " + dt2.ToString() + " (" + lastStreamTime.ToString() + " ticks)" +
" after duration ticks =" + (lastStreamTime - refTime).ToString());
}
/// <summary>
/// Return the next sample, compressed or uncompressed as appropriate.
/// </summary>
/// <param name="sample">The bits</param>
/// <param name="timestamp">Absolute timestamp in ticks</param>
/// <param name="keyframe">True if this sample is compressed and is a video keyframe</param>
/// <param name="newstream">True if this sample is uncompressed and
/// is from a different stream than the previous sample (thus may have a different media type).</param>
/// <returns>True if a valid sample is returned</returns>
public bool GetNextSample(out BufferChunk sample, out long timestamp, out bool keyframe, out bool newstream)
{
BufferChunk frame;
keyframe = false;
newstream = false;
if (compressed)
{
for (int i = 0; i < streamPlayers.Length; i++)
{
if (streamPlayers[i].GetNextFrame(out frame, out timestamp))
{
sample = ProfileUtility.FrameToSample(frame, out keyframe);
return(true);
}
}
}
else
{
for (int i = 0; i < fileStreamPlayers.Length; i++)
{
while (fileStreamPlayers[i].GetNextSample(out sample, out timestamp))
{
if (timestamp >= startTime) //skip past frames that may be returned due to the look behind.
{
currentFSPGuid = fileStreamPlayers[i].xGuid;
if (fileStreamPlayers[i].AudioMediaType != null)
{
currentChannels = fileStreamPlayers[i].AudioMediaType.WaveFormatEx.Channels;
}
//PRI3: instead of newstream, we could track the MT, and raise a flag only when it changes.
if (i != lastFSP)
{
newstream = true;
}
lastFSP = i;
return(true);
}
}
}
}
sample = null;
timestamp = 0;
return(false);
}
private static void verifyStream(DBStreamPlayer streamPlayer)
{
BufferChunk frame;
long streamTime;
BufferChunk sample;
bool keyframe;
long refTime = 0;
long lastStreamTime = 0;
while (streamPlayer.GetNextFrame(out frame, out streamTime))
{
try {
sample = ProfileUtility.FrameToSample(frame, out keyframe);
}
catch (Exception ex) {
DateTime dt = new DateTime(streamTime);
Console.WriteLine("FrameToSample failed at: " + dt.ToString() + "; Sampletime=" + streamTime.ToString());
Console.WriteLine(ex.ToString());
continue;
}
if (refTime == 0)
{
refTime = streamTime;
}
//DateTime dt = new DateTime(streamTime);
//Console.WriteLine("Sample: " + dt.ToString() + "; Sampletime=" + streamTime.ToString() + "; length=" + sample.Length.ToString()); Console.WriteLine(ex.ToString());
lastStreamTime = streamTime;
}
DateTime dt1 = new DateTime(refTime);
DateTime dt2 = new DateTime(lastStreamTime);
Console.WriteLine("Started at " + dt1.ToString() + "; Ended at " + dt2.ToString() + " (" + lastStreamTime.ToString() + " ticks)" +
" after duration ticks =" + (lastStreamTime - refTime).ToString());
}
/// <summary>
/// Recompress audio from mixer into a temp file using the native profile. This is used to implement mixing
/// in the 'norecompression' scenario.
/// </summary>
/// <param name="progressTracker"></param>
/// <returns></returns>
public bool Recompress(ProgressTracker progressTracker)
{
cancel = false;
if (audioMgr.Length == 0)
{
return(false);
}
//String useProfile;
ProfileData profileData = null;
if (this.compatibleStreamID >= 0)
{
profileData = ProfileUtility.StreamIdToProfileData(compatibleStreamID, MSR.LST.Net.Rtp.PayloadType.dynamicAudio);
//Debug.WriteLine("Mixer.Recompress: using audio profile from streamID: " + compatibleStreamID.ToString());
}
else
{
//Under what circumstances could we get here??
profileData = audioMgr[0].StreamProfileData;
}
WMWriter wmWriter = new WMWriter();
wmWriter.Init();
if (!wmWriter.ConfigProfile(profileData))
{
return(false);
}
String tempFileName = Utility.GetTempFilePath("wma");
wmWriter.ConfigFile(tempFileName);
wmWriter.GetInputProps();
wmWriter.ConfigAudio(audioMgr[0].GetUncompressedAudioMediaType());
wmWriter.Start();
//Write samples
progressTracker.CurrentValue = 0;
BufferChunk audioSample = null;
long audioTime = long.MaxValue;
long refTime = 0, endTime = 0;
long lastWriteTime = 0;
while (!cancel)
{
if (audioSample == null)
{
endTime = audioTime;
if (!GetNextSample(out audioSample, out audioTime))
{
break;
}
}
if (audioSample != null)
{
//write audio
if (refTime == 0)
{
refTime = audioTime;
}
//Debug.WriteLine("mixer.Recompress write audio: " + (audioTime-refTime).ToString() + ";length=" + audioSample.Length.ToString());
lastWriteTime = audioTime - refTime;
wmWriter.WriteAudio((uint)audioSample.Length, audioSample, (ulong)(audioTime - refTime));
audioSample = null;
}
else
{
break;
}
progressTracker.CurrentValue = (int)(lastWriteTime / (Constants.TicksPerSec));
}
wmWriter.Stop();
wmWriter.Cleanup();
wmWriter = null;
//Prepare a filestreamPlayer to read back compressed samples.
fileStreamPlayer = new FileStreamPlayer(tempFileName, refTime, endTime, true, -1);
return(true);
}
/// <summary>
/// Write each stream from DBStreamPlayer to a WM file, then create FileStreamPlayers for each.
/// It is necessary to do this before reading uncompressed samples, or using any of the
/// methods that return uncompressed MediaTypes.
/// This can be a long-running process. It can be cancelled with the Stop method.
/// </summary>
/// <returns>False if we failed to configure the native profile</returns>
public bool ToRawWMFile(ProgressTracker progressTracker)
{
if (cancel)
{
return(true);
}
String tmpfile = "";
fileStreamPlayers = new FileStreamPlayer[streamPlayers.Length];
for (int i = 0; i < streams.Length; i++)
{
streamProfileData = ProfileUtility.StreamIdToProfileData(streams[i], payload);
if (payload == PayloadType.dynamicVideo)
{
tmpfile = Utility.GetTempFilePath("wmv");
//nativeProfile = ProfileUtility.MakeNativeVideoProfile(streams[i]);
}
else
{
tmpfile = Utility.GetTempFilePath("wma");
//nativeProfile = ProfileUtility.MakeNativeAudioProfile(streams[i]);
}
WMWriter wmWriter = new WMWriter();
wmWriter.Init();
//if (!wmWriter.ConfigProfile(nativeProfile,"",0))
if (!wmWriter.ConfigProfile(StreamProfileData))
{
return(false);
}
wmWriter.ConfigFile(tmpfile);
wmWriter.ConfigNullProps();
//wmWriter.SetCodecInfo(payload);
wmWriter.Start();
long streamTime = long.MaxValue;
long refTime = 0;
long endTime = 0;
long lastWriteTime = 0;
BufferChunk frame;
BufferChunk sample;
bool keyframe;
bool discontinuity;
discontinuity = true;
//Catch exceptions to work around the rare case of data corruption.
//Oddly in one case where this occurred it did not occur if the segments were short enough
while (streamPlayers[i].GetNextFrame(out frame, out streamTime))
{
try {
sample = ProfileUtility.FrameToSample(frame, out keyframe);
}
catch {
DateTime dt = new DateTime(streamTime);
Console.WriteLine("Possible data corruption in stream: " + this.payload + ";" + this.cname +
" at " + dt.ToString() + " (" + streamTime.ToString() + ")");
continue;
}
if (refTime == 0)
{
refTime = streamTime;
}
lastWriteTime = streamTime - refTime;
try {
if (payload == PayloadType.dynamicVideo)
{
//Debug.WriteLine("Write video: " + (streamTime-refTime).ToString() + ";length=" + sample.Length.ToString());
wmWriter.WriteCompressedVideo((ulong)(streamTime - refTime), (uint)sample.Length, (byte[])sample, keyframe, discontinuity);
}
else
{
//Debug.WriteLine("Write audio: " + (streamTime-refTime).ToString() + ";length=" + sample.Length.ToString());
wmWriter.WriteCompressedAudio((ulong)(streamTime - refTime), (uint)sample.Length, (byte[])sample);
}
}
catch {
DateTime dt = new DateTime(streamTime);
Console.WriteLine("Failed to write. Possible data corruption in stream: " + this.payload + ";" + this.cname +
" at " + dt.ToString() + " (" + streamTime.ToString() + ")");
}
if (discontinuity)
{
discontinuity = false;
}
endTime = streamTime;
if (cancel)
{
break;
}
progressTracker.CurrentValue = (int)(lastWriteTime / Constants.TicksPerSec);
//Debug.WriteLine("StreamMgr.ToRawWMFile: ProgressTracker currentValue=" + progressTracker.CurrentValue.ToString() +
// ";streamTime=" + streamTime.ToString());
}
wmWriter.Stop();
wmWriter.Cleanup();
wmWriter = null;
fileStreamPlayers[i] = new FileStreamPlayer(tmpfile, refTime, endTime, false, streams[i]);
if (cancel)
{
break;
}
}
return(true);
}
public FileStreamPlayer(String filename, long start, long end, bool compressed, int streamID)
{
this.streamID = streamID;
this.filename = filename;
this.start = start;
this.end = end;
this.duration = (ulong)(end - start);
outOfData = false;
this.guid = Guid.NewGuid();
//create IWMSyncReader and open the file.
uint hr = WMFSDKFunctions.WMCreateSyncReader(null, 0, out reader);
IntPtr fn = Marshal.StringToCoTaskMemUni(filename);
reader.Open(fn);
Marshal.FreeCoTaskMem(fn);
//Verify that the file contains one stream.
uint outputcnt;
reader.GetOutputCount(out outputcnt);
Debug.Assert(outputcnt == 1);
//Extract the MediaType for the stream.
uint cmt = 0;
IntPtr ipmt;
IWMOutputMediaProps outputProps;
reader.GetOutputProps(0, out outputProps);
outputProps.GetMediaType(IntPtr.Zero, ref cmt);
ipmt = Marshal.AllocCoTaskMem((int)cmt);
outputProps.GetMediaType(ipmt, ref cmt);
byte[] bmt = new byte[cmt];
Marshal.Copy(ipmt, bmt, 0, (int)cmt);
BufferChunk bc = new BufferChunk(bmt);
byte[] cd;
GUID majorTypeGUID;
outputProps.GetType(out majorTypeGUID);
if (WMGuids.ToGuid(majorTypeGUID) == WMGuids.WMMEDIATYPE_Video)
{
vmt = new MediaTypeVideoInfo();
ProfileUtility.ReconstituteBaseMediaType((MediaType)vmt, bc);
ProfileUtility.ReconstituteVideoFormat(vmt, bc, out cd);
//Note: This is a special case which we would like to generalize: The default output format for the
//12bpp video was found not to return any uncompressed samples. Setting this particular case to RGB 24 fixed it.
if ((!compressed) && (vmt.VideoInfo.BitmapInfo.BitCount == 12))
{
SetVideoOutputProps();
}
}
else if (WMGuids.ToGuid(majorTypeGUID) == WMGuids.WMMEDIATYPE_Audio)
{
amt = new MediaTypeWaveFormatEx();
ProfileUtility.ReconstituteBaseMediaType((MediaType)amt, bc);
ProfileUtility.ReconstituteAudioFormat(amt, bc, out cd);
}
//if compressed is set, retrieve stream samples
if (compressed)
{
reader.SetReadStreamSamples(1, 1);
}
}
