public Frame Process(Frame cFrameSource)
{
if (null == cFrame)
cFrame = new Frame(_cFormatTarget);
Process(cFrameSource, cFrame);
return cFrame;
}
public void Process(Frame cFrameSource, Frame cFrameTarget)
{
int nResult = 0;
AVFrame cAVFrameSource = (AVFrame)Marshal.PtrToStructure(cFrameSource, typeof(AVFrame));
AVFrame cAVFrameTarget = (AVFrame)Marshal.PtrToStructure(cFrameTarget, typeof(AVFrame));
nResult = Functions.sws_scale(pContext, cAVFrameSource.data, cAVFrameSource.linesize, 0, _cFormatSource.nHeight, cAVFrameTarget.data, cAVFrameTarget.linesize);
}
public Frame Transform(Video cFormatVideoTarget, Frame cFrameSource, Frame cFrameTarget)
{
if (!_ahTransformContexts.ContainsKey(cFormatVideoTarget) || null == _ahTransformContexts[cFormatVideoTarget])
{
foreach (Video cFormatVideo in _ahTransformContexts.Keys.Where(o => NULL == o.pAVCodecContext).ToArray())
{
_ahTransformContexts[cFormatVideo].Dispose();
_ahTransformContexts.Remove(cFormatVideo);
}
_ahTransformContexts.Add(cFormatVideoTarget, new TransformContext(this, cFormatVideoTarget));
}
if (null == cFrameTarget)
return _ahTransformContexts[cFormatVideoTarget].Process(cFrameSource);
_ahTransformContexts[cFormatVideoTarget].Process(cFrameSource, cFrameTarget);
return cFrameTarget;
}
private bool cFrameAudio_Disposing(Frame cFrame)
{
lock (_aqAudioFramesFree)
{
if (20 < _aqAudioFramesFree.Count)
{
(new Logger()).WriteDebug3("audio frame removed. total:" + nFramesQueueAudio--);
return true;
}
else
_aqAudioFramesFree.Enqueue(cFrame);
}
return false;
}
public Frame Transform(Video cFormatVideoTarget, Frame cFrameSource)
{
return Transform(cFormatVideoTarget, cFrameSource, null);
}
private void FrameDecodeAudio()
{
if (null == _cFormatAudioTarget)
throw new NotImplementedException("null == cFormatTarget"); //UNDONE нужно доделать возвращение сырых пакетов
Logger.Timings cTimings = new Logger.Timings();
int nBufferSizeSource;
if(null == _cFrameAudio)
_cFrameAudio = new Frame(_cFormatAudio, _cFormatAudio.nBufferSize);
Frame cSamplesTarget = null;
Frame cFrame;
if (1 > _aqAudioFramesFree.Count) //ротация кадров
{
cFrame = new Frame(_cFormatAudioTarget, _cFormatAudioTarget.nBufferSize / _nFPS);
cFrame.Disposing += new Frame.DisposingDelegate(cFrameAudio_Disposing);
}
else
lock (_aqAudioFramesFree)
cFrame = _aqAudioFramesFree.Dequeue();
int nBytesCapacity = 0;
int nBytesOffset = 0;
byte[] aPacketBytes;
int nLength = 0;
AVPacket stPacket;
if (null != _aBytesRemainder)
{
Array.Copy(_aBytesRemainder, 0, cFrame.aBuffer, 0, _aBytesRemainder.Length);
nBytesOffset += _aBytesRemainder.Length;
_aBytesRemainder = null;
}
while (cFrame.nLength > nBytesOffset)
{
aPacketBytes = null;
if (NULL == _pPacketAudioDub)
{
_pPacketAudioDub = Functions.avcodec_alloc_frame();
_stPacketAudio = (AVPacket)Marshal.PtrToStructure(_pPacketAudioDub, typeof(AVPacket));
}
cTimings.Restart("allocation");
while (true)
{
// NOTE: the audio packet can contain several frames
while (_stPacketAudio.size > 0)
{
nBufferSizeSource = _cFrameAudio.nLengthBuffer;
Marshal.StructureToPtr(_stPacketAudio, _pPacketAudioDub, true);
nLength = Functions.avcodec_decode_audio3(_cFormatAudio.pAVCodecContext, _cFrameAudio.aBuffer, ref nBufferSizeSource, _pPacketAudioDub);
cTimings.CheckIn("decode");
if (nLength < 0)
{
_stPacketAudio.size = 0;
break;
}
_stPacketAudio.data += nLength;
_stPacketAudio.size -= nLength;
nLength = nBufferSizeSource;
if (nLength <= 0)
continue;
cTimings.Restart("frame");
_cFrameAudio.nLength = nLength;
cSamplesTarget = _cFormatAudio.Transform(_cFormatAudioTarget, _cFrameAudio);
aPacketBytes = cSamplesTarget.aBytes;
cTimings.Restart("transform");
break;
}
if (null != aPacketBytes)
break;
if (NULL != _pPacketAudio)
{
Functions.av_free_packet(_pPacketAudio);
Functions.av_freep(ref _pPacketAudio);
cTimings.Restart("packet free");
}
while (!_bFileEnd && 1 > _aqAudioPackets.Count)
{
lock (_cSyncRoot)
GetAndSortNextPacket();
}
if (_bFileEnd && 1 > _aqAudioPackets.Count)
break;
lock (_cSyncRoot)
_pPacketAudio = _aqAudioPackets.Dequeue();
stPacket = (AVPacket)Marshal.PtrToStructure(_pPacketAudio, typeof(AVPacket));
_stPacketAudio.data = stPacket.data;
_stPacketAudio.size = stPacket.size;
cTimings.Restart("packets");
}
if (null == aPacketBytes)
throw new Exception("audio packet is null");
nBytesCapacity = aPacketBytes.Length;
if (cFrame.nLength < nBytesOffset + aPacketBytes.Length)
{
nBytesCapacity = cFrame.nLength - nBytesOffset;
_aBytesRemainder = new byte[aPacketBytes.Length - nBytesCapacity];
Array.Copy(aPacketBytes, nBytesCapacity, _aBytesRemainder, 0, _aBytesRemainder.Length);
}
Array.Copy(aPacketBytes, 0, cFrame.aBuffer, nBytesOffset, nBytesCapacity);
nBytesOffset += nBytesCapacity;
cTimings.Restart("accumulation");
}
cTimings.Stop("frame:decode:audio: >40ms", 40);
lock (_aqAudioFrames)
_aqAudioFrames.Enqueue(cFrame);
}
public void AudioFrameNext(Format.Audio cFormatSource, Frame cFrameSource)
{
if (NULL == _pStreamAudio)
throw new Exception("there is no audio stream in file");
if (null == cFrameSource)
return;
AVStream stAVStream = (AVStream)Marshal.PtrToStructure(_pStreamAudio, typeof(AVStream));
//_nPTSAudio = (double)stAVStream.pts.val * stAVStream.time_base.num / stAVStream.time_base.den;
Frame cFrame;
AVPacket stAVPacket = new AVPacket();
IntPtr pAVPacket;
if (null == _cFrameAudio)
_cFrameAudio = new Frame(_cFormatAudio, _cFormatAudio.nBufferSize);
Frame[] aFrames = cFormatSource.Convert(_cFormatAudio, cFrameSource, _cFrameAudio);
for (int nIndx = 0; aFrames.Length > nIndx; nIndx++)
{
cFrame = aFrames[nIndx];
pAVPacket = Functions.av_malloc((uint)(Marshal.SizeOf(stAVPacket)));
Functions.av_init_packet(pAVPacket);
stAVPacket = (AVPacket)Marshal.PtrToStructure(pAVPacket, typeof(AVPacket));
if (cFrame.nPTS != Constants.AV_NOPTS_VALUE)
stAVPacket.pts = Functions.av_rescale_q(cFrame.nPTS, _cFormatAudio.stAVCodecContext.time_base, stAVStream.time_base);
//stAVPacket.pts = stAVPacket.dts = Functions.av_rescale_q((long)_nPTSAudio, _cFormatVideo.stAVCodecContext.time_base, stAVStream.time_base);
stAVPacket.flags |= Constants.AV_PKT_FLAG_KEY;
stAVPacket.stream_index = stAVStream.index;
stAVPacket.size = cFrame.nLength;
stAVPacket.data = cFrame.p;
Marshal.StructureToPtr(stAVPacket, pAVPacket, true);
_cFormatCtx.PacketWrite(pAVPacket);
Functions.av_free_packet(pAVPacket);
Functions.av_freep(ref pAVPacket);
cFrame.Dispose();
//_nPTSAudio++;
}
}
public void Process(Frame cSamplesSource, Frame cSamplesTarget)
{
int nSamplesSourceQty = 0;
if(null != cSamplesSource)
nSamplesSourceQty = cSamplesSource.nLength / (_cFormatSource.nChannelsQty * _cFormatSource.nBitsPerSample / 8);
int nSamplesTargetQty = cSamplesTarget.nLengthBuffer / (_cFormatTarget.nChannelsQty * _cFormatTarget.nBitsPerSample / 8);
nSamplesTargetQty = Functions.swr_convert(pContext, cSamplesTarget, nSamplesTargetQty, cSamplesSource, nSamplesSourceQty);
cSamplesTarget.nLength = nSamplesTargetQty * _cFormatTarget.nChannelsQty * _cFormatTarget.nBitsPerSample / 8;
}
public Frame Transform(Audio cFormatAudioTarget, Frame cSamplesSource, Frame cSamplesTarget)
{
if (nSamplesRate != cFormatAudioTarget.nSamplesRate || eSampleFormat != cFormatAudioTarget.eSampleFormat || nChannelsQty != cFormatAudioTarget.nChannelsQty)
{
if (!_ahTransformContexts.ContainsKey(cFormatAudioTarget) || null == _ahTransformContexts[cFormatAudioTarget])
{
foreach (Audio cFormatAudio in _ahTransformContexts.Keys.Where(o => NULL == o.pAVCodecContext).ToArray())
{
_ahTransformContexts[cFormatAudio].Dispose();
_ahTransformContexts.Remove(cFormatAudio);
}
_ahTransformContexts.Add(cFormatAudioTarget, new TransformContext(this, cFormatAudioTarget));
}
if (null == cSamplesTarget)
return _ahTransformContexts[cFormatAudioTarget].Process(cSamplesSource);
_ahTransformContexts[cFormatAudioTarget].Process(cSamplesSource, cSamplesTarget);
return cSamplesTarget;
}
return cSamplesSource;
}
public void FrameNextAudio(Frame cFrameSource)
{
FrameNextAudio(null, cFrameSource);
}
public void FrameNextAudio(Format.Audio cFormatSource, Frame cFrameSource)
{
if (null == cFrameSource)
return;
if (NULL == _pStreamAudio)
throw new Exception("there is no audio stream in file");
FrameNext(_pStreamAudio, cFormatSource, cFrameSource, _cFormatAudio, _pBitStreamFilterAudio);
}
public void FrameNextVideo(Frame cFrameSource)
{
FrameNextVideo(null, cFrameSource);
}
public void FrameNextVideo(Format.Video cFormatSource, Frame cFrameSource)
{
if (null == cFrameSource)
return;
if (NULL == _pStreamVideo)
throw new Exception("there is no video stream in file");
FrameNext(_pStreamVideo, cFormatSource, cFrameSource, _cFormatVideo, _pBitStreamFilterVideo);
}
public Frame(Format.Audio cFormat, Frame cFrame)
: this()
{
if (null != cFrame._aBuffer)
throw new NotImplementedException();
AVFrame cAVFrame = (AVFrame)Marshal.PtrToStructure(cFrame._pAVFrame, typeof(AVFrame));
if (0 < cAVFrame.width || 0 < cAVFrame.height || 1 > cAVFrame.nb_samples)
throw new NotImplementedException();
int nLineSize = cFormat.nBitsPerSample / 8 * cAVFrame.nb_samples;
//int nReminder = nLineSize % 64;
//if(0 < nReminder)
// nLineSize += 64 - nReminder;
_nLength = cFormat.nChannelsQty * nLineSize;
_aBuffer = new byte[_nLength];
bool bPlanar = (1 < cAVFrame.data.Count(o => NULL != o));
if (!bPlanar)
nLineSize = nLength;
for (int nIndx = 0; cAVFrame.data.Length > nIndx; nIndx++)
{
if (NULL == cAVFrame.data[nIndx])
break;
Marshal.Copy(cAVFrame.data[nIndx], _aBuffer, nIndx * nLineSize, nLineSize);
}
Init(cFormat);
}
bool cFrameAudio_Disposing(Frame cFrame)
{
lock (_aqAudioFramesFree)
_aqAudioFramesFree.Enqueue(cFrame);
return false;
}
bool cFrameVideo_Disposing(Frame cFrame)
{
lock (_aqVideoFramesFree)
_aqVideoFramesFree.Enqueue(cFrame);
return false;
}
override public Frame[] Convert(Format cFormatTarget, Frame cFrameSource) //в pAVFrameSource лежат байты в формате this!!!
{
List<Frame> aRetVal = new List<Frame>();
if (null == cFormatTarget || !(cFormatTarget is Format.Video))
throw new Exception("target format is null or has a wrong type");
Format.Video cFormatVideoTarget = (Format.Video)cFormatTarget;
try
{
if (ePixelFormat == cFormatVideoTarget.ePixelFormat && nHeight == cFormatVideoTarget.nHeight && nWidth == cFormatVideoTarget.nWidth)
return new Frame[] { new Frame(cFrameSource.aBytes) { nPTS = cFrameSource.nPTS, bKeyframe = cFrameSource.bKeyframe } };
if (eCodecID == cFormatTarget.eCodecID || NULL != _pCodec)
throw new NotImplementedException(); //TODO доделать конверт из encoded в raw
cFrameSource = Transform(cFormatVideoTarget, cFrameSource);
int nSize;
if (NULL == cFrameSource)
(new Logger()).WriteWarning("Format.Video.Convert: IntPtr.Zero == cFrameSource.AVFrameGet()");
if (NULL == cFormatVideoTarget.pAVCodecContext)
(new Logger()).WriteWarning("Format.Video.Convert: IntPtr.Zero == cFormatVideoTarget.pAVCodecContext");
if (null == _cFrame)
{
_cFrame = new Frame(cFormatVideoTarget.nBufferSize);
_cFrame.nPTS = 0;
}
cFrameSource.nPTS = _cFrame.nPTS;
nSize = Functions.avcodec_encode_video(cFormatVideoTarget.pAVCodecContext, _cFrame.aBuffer, _cFrame.nLengthBuffer, cFrameSource);
if (0 > nSize)
throw new Exception("video encoding failed:" + nSize);
if (0 < nSize)
{
aRetVal.Add(new Frame(null, _cFrame.aBuffer.Take(nSize).ToArray()));
AVCodecContext stAVCodecContext = (AVCodecContext)Marshal.PtrToStructure(cFormatVideoTarget.pAVCodecContext, typeof(AVCodecContext));
if (NULL != stAVCodecContext.coded_frame)
{
AVFrame cAVFrame = (AVFrame)Marshal.PtrToStructure(stAVCodecContext.coded_frame, typeof(AVFrame));
aRetVal[0].nPTS = cAVFrame.pts;
aRetVal[0].bKeyframe = 0 < cAVFrame.key_frame;
}
}
_cFrame.nPTS++;
}
catch (Exception ex)
{
(new Logger()).WriteError(ex);
}
return aRetVal.ToArray();
}
private void FrameNext(IntPtr pStream, Format cFormatSource, Frame cFrameSource, Format cFormatTarget, IntPtr pBitStreamFilter)
{
AVStream stAVStream = (AVStream)Marshal.PtrToStructure(pStream, typeof(AVStream));
Frame[] aFrames;
if (null == cFormatSource)
{
if (null == cFrameSource && cFormatTarget is Format.Audio)
aFrames = ((Format.Audio)cFormatTarget).Flush();
else
aFrames = new Frame[] { new Frame(null, cFrameSource.aBytes.ToArray()) { nPTS = cFrameSource.nPTS, bKeyframe = cFrameSource.bKeyframe } };
}
else
aFrames = cFormatSource.Convert(cFormatTarget, cFrameSource);
IntPtr pAVPacket;
AVPacket stAVPacket;
for (int nIndx = 0; aFrames.Length > nIndx; nIndx++)
{
pAVPacket = Functions.av_malloc((uint)(Marshal.SizeOf(typeof(AVPacket))));
Functions.av_init_packet(pAVPacket);
stAVPacket = (AVPacket)Marshal.PtrToStructure(pAVPacket, typeof(AVPacket));
if (aFrames[nIndx].nPTS != Constants.AV_NOPTS_VALUE)
stAVPacket.pts = Functions.av_rescale_q(aFrames[nIndx].nPTS, cFormatTarget.stAVCodecContext.time_base, stAVStream.time_base);
if (aFrames[nIndx].bKeyframe)
stAVPacket.flags |= Constants.AV_PKT_FLAG_KEY;
stAVPacket.stream_index = stAVStream.index;
stAVPacket.size = aFrames[nIndx].nLength;
stAVPacket.data = aFrames[nIndx].pBytes;
lock(_aFramesLocked)
_aFramesLocked.Add(aFrames[nIndx]);
stAVPacket.buf = Functions.av_buffer_create(stAVPacket.data, stAVPacket.size, Marshal.GetFunctionPointerForDelegate(_fFrameUnlock), aFrames[nIndx], 0);
//System.IO.File.AppendAllText("packets", stAVPacket.pts + "\t" + stAVPacket.size + Environment.NewLine);
if (NULL != pBitStreamFilter && 0 != Functions.av_bitstream_filter_filter(pBitStreamFilter, cFormatTarget.pAVCodecContext, NULL, ref stAVPacket.data, ref stAVPacket.size, stAVPacket.data, stAVPacket.size, aFrames[nIndx].bKeyframe))
throw new Exception("error while filter a frame");
Marshal.StructureToPtr(stAVPacket, pAVPacket, true);
lock(_cFormatCtx)
_cFormatCtx.PacketWrite(pAVPacket);
//Functions.av_free_packet(pAVPacket);
//Functions.av_freep(ref pAVPacket);
}
}
public Frame Process(Frame cSamplesSource)
{
if (null == cSamples)
cSamples = new Frame(_cFormatTarget);
Process(cSamplesSource, cSamples);
return cSamples;
}
override public Frame[] Convert(Format cFormatTarget, Frame cFrameSource) //в cFrameSource лежат байты в формате this!!!
{
List<Frame> aRetVal = new List<Frame>();
if (null == cFormatTarget || !(cFormatTarget is Format.Audio))
throw new Exception("target format is null or has a wrong type");
Format.Audio cFormatAudioTarget = (Format.Audio)cFormatTarget;
IntPtr pPacket = NULL;
Frame cFrameConverted;
AVFrame cAVFrame;
int nIndx = 0, nFrameSize, nSize, nPacketGot = 0, nOffset = 0;
try
{
if (eCodecID == cFormatTarget.eCodecID)
{
if (nSamplesRate == cFormatAudioTarget.nSamplesRate && eSampleFormat == cFormatAudioTarget.eSampleFormat && nChannelsQty == cFormatAudioTarget.nChannelsQty)
return new Frame[] { new Frame(null, cFrameSource.aBytes) { nPTS = cFrameSource.nPTS, bKeyframe = cFrameSource.bKeyframe } };
if (NULL != _pCodec)
throw new NotImplementedException(); //TODO доделать конверт из encoded в raw
}
if (nBufferSize < cFrameSource.nLength)
throw new Exception("wrong bytes qty for specified audio format. Should be less than " + nBufferSize + " but got " + cFrameSource.nLength);
while(true)
{
cFrameConverted = Transform(cFormatAudioTarget, cFrameSource);
if (null == cFrameConverted || 1 > cFrameConverted.nLength)
break;
cFrameSource = null;
cAVFrame = (AVFrame)Marshal.PtrToStructure(cFrameConverted, typeof(AVFrame));
if (null == aByteStream)
{
aByteStream = new List<List<byte>>();
for (nIndx = 0; cAVFrame.data.Length > nIndx; nIndx++)
{
if (NULL == cAVFrame.data[nIndx])
break;
aByteStream.Add(new List<byte>());
}
if(1 > aByteStream.Count)
aByteStream.Add(new List<byte>());
}
int nLineSize = cFrameConverted.nLength / aByteStream.Count;
for (nIndx = 0; aByteStream.Count > nIndx; nIndx++)
aByteStream[nIndx].AddRange(cFrameConverted.aBuffer.Skip((int)((long)cAVFrame.data[nIndx] - (long)cAVFrame.data[0])).Take(nLineSize));
}
pPacket = Functions.av_malloc(Marshal.SizeOf(typeof(AVPacket)));
Functions.av_init_packet(pPacket);
AVPacket stPacket = (AVPacket)Marshal.PtrToStructure(pPacket, typeof(AVPacket));
stPacket.size = 0;
if (null == _cFrame)
_cFrame = new Frame(cFormatAudioTarget.nBufferSize);
if (1 > (nFrameSize = cFormatAudioTarget.stAVCodecContext.frame_size))
nFrameSize = cFrameConverted.nLength / ((cFormatAudioTarget.nBitsPerSample / 8) * cFormatAudioTarget.nChannelsQty);
nFrameSize *= (cFormatAudioTarget.nBitsPerSample / 8);
if (null == cFormatAudioTarget._cFrame)
cFormatTarget._cFrame = new Frame(this, nFrameSize * cFormatAudioTarget.nChannelsQty);
if (2 > aByteStream.Count)
nFrameSize *= cFormatAudioTarget.nChannelsQty;
while (nFrameSize <= aByteStream[0].Count && _cFrame.nLengthBuffer > (nOffset + stPacket.size))
{
for (nIndx = 0; aByteStream.Count > nIndx; nIndx++)
{
aByteStream[nIndx].CopyTo(0, cFormatTarget._cFrame.aBuffer, nIndx * nFrameSize, nFrameSize);
aByteStream[nIndx].RemoveRange(0, nFrameSize);
}
stPacket.data = _cFrame.pBytes + nOffset;
stPacket.size = _cFrame.nLengthBuffer - nOffset;
Marshal.StructureToPtr(stPacket, pPacket, true);
//lock (helper._oSyncRootGlobal)
nSize = Functions.avcodec_encode_audio2(cFormatAudioTarget.pAVCodecContext, pPacket, cFormatTarget._cFrame, ref nPacketGot);
if (0 > nSize)
throw new Exception("audio encoding failed\n");
if (0 < nPacketGot)
{
stPacket = (AVPacket)Marshal.PtrToStructure(pPacket, typeof(AVPacket));
if (0 < stPacket.size)
{
aRetVal.Add(new Frame(_cFrame.aBuffer.Skip(nOffset).Take(stPacket.size).ToArray()) { nPTS = stPacket.pts }); //TODO нужно сделать "наследование" одного фрейма от другого (один aBytes на оба Frame'а)
nOffset += stPacket.size;
}
}
}
}
catch (Exception ex)
{
(new Logger()).WriteError(ex);
}
finally
{
if (NULL != pPacket)
{
Functions.av_free_packet(pPacket);
Functions.av_freep(ref pPacket);
}
//if (NULL != pAVFrame)
// Functions.avcodec_free_frame(ref pAVFrame);
}
return aRetVal.ToArray();
}
public Frame Transform(Audio cFormatAudioTarget, Frame cSamplesSource)
{
return Transform(cFormatAudioTarget, cSamplesSource, null);
}
public Frame[] Flush()
{
if (null == _cFrame)
_cFrame = new Frame(nBufferSize);
List<Frame> aRetVal = new List<Frame>();
IntPtr pPacket = NULL;
try
{
int nPacketGot = 0, nOffset = 0;
pPacket = Functions.av_malloc(Marshal.SizeOf(typeof(AVPacket)));
Functions.av_init_packet(pPacket);
AVPacket stPacket = (AVPacket)Marshal.PtrToStructure(pPacket, typeof(AVPacket));
stPacket.size = 0;
while (true)
{
stPacket.data = _cFrame.pBytes + nOffset;
stPacket.size = _cFrame.nLengthBuffer - nOffset;
Marshal.StructureToPtr(stPacket, pPacket, true);
//lock (helper._oSyncRootGlobal)
Functions.avcodec_encode_audio2(pAVCodecContext, pPacket, NULL, ref nPacketGot);
stPacket = (AVPacket)Marshal.PtrToStructure(pPacket, typeof(AVPacket));
if (0 < nPacketGot && 0 < stPacket.size)
{
aRetVal.Add(new Frame(_cFrame.aBuffer.Skip(nOffset).Take(stPacket.size).ToArray()) { nPTS = stPacket.pts }); //TODO нужно сделать "наследование" одного фрейма от другого (один aBytes на оба Frame'а)
nOffset += stPacket.size;
}
// else
break;
}
}
catch (Exception ex)
{
(new Logger()).WriteError(ex);
}
finally
{
if (NULL != pPacket)
{
Functions.av_free_packet(pPacket);
Functions.av_freep(ref pPacket);
}
}
return aRetVal.ToArray();
}
private bool AddFrameToQueue()
{
bool bVideo = true, bAudio = true;
if (null != _aqVideoFrames)
{
while (!_bFileEnd)
{
try
{
FrameDecodeVideo();
_nPreparedFramesIndx++;
break;
}
catch (Exception ex)
{
bVideo = false;
if (!_bFileEnd)
(new Logger()).WriteWarning(ex); //logging
}
}
}
if ((bVideo || _bFileEnd) && null != _aqAudioFrames)
{
while (!_bFileEnd && bVideo || !bVideo)
{
try
{
if (_bFileEnd)
while (true)
FrameDecodeAudio(); // дообрабатываем аудиопакеты, взятые ранее и валимся в catch
else
FrameDecodeAudio();
break;
}
catch (Exception ex)
{
bAudio = false;
if (!_bFileEnd)
(new Logger()).WriteWarning(ex); //logging
else
break;
}
}
}
if (bVideo && !bAudio) // неполный последний кадр уравновешиваем пустым аудио-кадром, чтобы не плодить рассинхрон дальше....
{
(new Logger()).WriteWarning("queue: bad last audio frame. silenced frame added."); //logging
Frame cFrame = new Frame(_cFormatAudioTarget);
lock (_aqAudioFrames)
_aqAudioFrames.Enqueue(cFrame);
}
if (_bFileEnd || !bVideo)
return false;
while (nCacheSize < (null == _aqVideoFrames ? _aqAudioFrames.Count : _aqVideoFrames.Count))
{
if (_bClose)
return false;
System.Threading.Thread.Sleep(40);//FPS
}
return true;
}
private void FrameDecodeVideo()
{
if (null == _cFormatVideoTarget)
throw new NotImplementedException("null == cFormatTarget"); //UNDONE нужно доделать возвращение сырых пакетов
Logger.Timings cTimings = new Logger.Timings();
int nVideoFrameFinished = 0;
IntPtr pPacketNext = NULL;
while (true)
{
while (NULL == pPacketNext)
{
while (1 > _aqVideoPackets.Count)
{
if (_bFileEnd)
throw new Exception("file ended");
lock (_cSyncRoot)
GetAndSortNextPacket();
}
pPacketNext = _aqVideoPackets.Peek();
}
cTimings.Restart("packets");
if (null == _cFrameVideo)
_cFrameVideo = new Frame(_cFormatVideo, _cFormatVideo.nBufferSize);
try
{
int nError = Functions.avcodec_decode_video2(_cFormatVideo.pAVCodecContext, _cFrameVideo.AVFrameGet(), ref nVideoFrameFinished, pPacketNext);
Functions.av_free_packet(pPacketNext);
Functions.av_freep(ref pPacketNext);
}
catch (Exception ex)
{
(new Logger()).WriteError(ex);
}
_aqVideoPackets.Dequeue();
cTimings.Restart("decode");
if (0 < nVideoFrameFinished)
{
Frame cFrame;
if (1 > _aqVideoFramesFree.Count) //ротация кадров
{
cFrame = new Frame(_cFormatVideoTarget, _cFormatVideoTarget.nBufferSize);
cFrame.Disposing += new Frame.DisposingDelegate(cFrameVideo_Disposing);
}
else
lock (_aqVideoFramesFree)
cFrame = _aqVideoFramesFree.Dequeue();
//Functions.avpicture_fill(_pAVFrameTarget, cFrame.aBytes, _cFormatVideoTarget.ePixelFormat, _cFormatVideoTarget.nWidth, _cFormatVideoTarget.nHeight);
_cFormatVideo.Transform(_cFormatVideoTarget, _cFrameVideo, cFrame); // lock inside!
lock (_aqVideoFrames)
_aqVideoFrames.Enqueue(cFrame);
if (_bDoWritingFrames)
{
if (null != cFrame)
{
byte[] aBytes = new byte[_cFormatVideoTarget.nBufferSize];
System.Runtime.InteropServices.Marshal.Copy(cFrame.p, aBytes, 0, (int)_cFormatVideoTarget.nBufferSize);
lock (_aqWritingFrames)
_aqWritingFrames.Enqueue(aBytes);
}
}
cTimings.Restart("transform");
break;
}
}
cTimings.Stop("frame:decode:video: >40ms", 40);
}
private void FrameDecodeVideo()
{
(new Logger()).WriteDebug4("in");
if (null == _cFormatVideoTarget)
throw new NotImplementedException("null == cFormatTarget"); //UNDONE нужно доделать возвращение сырых пакетов
Logger.Timings cTimings = new Logger.Timings("ffmpeg:file");
int nVideoFrameFinished = 0;
IntPtr pPacketNext = NULL;
while (true)
{
while (NULL == pPacketNext)
{
while (1 > _aqVideoPackets.Count)
{
if (_bFileEnd)
{
pPacketNext = Functions.av_malloc(Marshal.SizeOf(typeof(AVPacket)));
helpers.WinAPI.memset(pPacketNext, 0, Marshal.SizeOf(typeof(AVPacket)));
Functions.av_init_packet(pPacketNext);
break;
}
lock (_oSyncRoot)
PacketNext();
}
if (!_bFileEnd)
pPacketNext = _aqVideoPackets.Peek();
}
cTimings.Restart("packets");
if (null == _cFrameVideo)
_cFrameVideo = new Frame(_cFormatVideo);
try
{
int nError = Functions.avcodec_decode_video2(_cFormatVideo.pAVCodecContext, _cFrameVideo, ref nVideoFrameFinished, pPacketNext);
if (!_bFileEnd)
{
Functions.av_free_packet(pPacketNext);
Functions.av_freep(ref pPacketNext);
_aqVideoPackets.Dequeue();
}
}
catch (Exception ex)
{
(new Logger()).WriteError(ex);
}
cTimings.Restart("decode");
if (0 < nVideoFrameFinished)
{
Frame cFrame;
if (1 > _aqVideoFramesFree.Count) //ротация кадров
{
cFrame = new Frame(_cFormatVideoTarget);
cFrame.Disposing += cFrameVideo_Disposing;
(new Logger()).WriteDebug3("video frame added. total:" + nFramesQueueVideo++);
}
else
lock (_aqVideoFramesFree)
cFrame = _aqVideoFramesFree.Dequeue();
_cFormatVideo.Transform(_cFormatVideoTarget, _cFrameVideo, cFrame);
cFrame.bKeyframe = _cFrameVideo.bKeyframe;
cFrame.nPTS = _cFrameVideo.nPTS;
lock (_aqVideoFrames)
_aqVideoFrames.Enqueue(cFrame);
if (_bDoWritingFrames)
{
if (null != cFrame)
{
byte[] aBytes = new byte[_cFormatVideoTarget.nBufferSize];
System.Runtime.InteropServices.Marshal.Copy(cFrame.pBytes, aBytes, 0, (int)_cFormatVideoTarget.nBufferSize);
lock (_aqWritingFrames)
_aqWritingFrames.Enqueue(aBytes);
}
}
cTimings.Restart("transform");
if (!_bFileEnd)
break;
}
else if (_bFileEnd)
{
if (NULL != pPacketNext)
{
Functions.av_free_packet(pPacketNext);
Functions.av_freep(ref pPacketNext);
}
throw new Exception("file ended");
}
}
cTimings.Stop("frame:decode:video: >40ms", 40); //FPS
(new Logger()).WriteDebug4("return");
}
private void FrameDecodeAudio()
{
(new Logger()).WriteDebug4("in");
if (null == _cFormatAudioTarget)
throw new NotImplementedException("null == cFormatTarget"); //UNDONE нужно доделать возвращение сырых пакетов
Logger.Timings cTimings = new Logger.Timings("ffmpeg:file");
bool bFrameDecoded = false;
Frame cSamplesTarget = null;
Frame cFrame;
if (1 > _aqAudioFramesFree.Count) //ротация кадров
{
cFrame = new Frame(_cFormatAudioTarget);
cFrame.Disposing += cFrameAudio_Disposing;
(new Logger()).WriteDebug3("audio frame added. total:" + nFramesQueueAudio++);
}
else
lock (_aqAudioFramesFree)
cFrame = _aqAudioFramesFree.Dequeue();
int nBytesCapacity = 0;
int nBytesOffset = 0;
byte[] aPacketBytes;
int nLength = 0;
AVPacket stPacket;
if (null != _aBytesRemainder)
{
if (_aBytesRemainder.Length > cFrame.aBuffer.Length)
{
//(new Logger()).WriteWarning("_aBytesRemainder.Length > cFrame.aBuffer.Length : " + _aBytesRemainder.Length + ":" + cFrame.aBuffer.Length);
Array.Copy(_aBytesRemainder, 0, cFrame.aBuffer, 0, cFrame.aBuffer.Length);
_aBytesRemainder = _aBytesRemainder.Skip(cFrame.aBuffer.Length).Take(_aBytesRemainder.Length - cFrame.aBuffer.Length).ToArray();
nBytesOffset += cFrame.aBuffer.Length;
}
else
{
Array.Copy(_aBytesRemainder, 0, cFrame.aBuffer, 0, _aBytesRemainder.Length);
nBytesOffset += _aBytesRemainder.Length;
_aBytesRemainder = null;
}
}
while (cFrame.nLength > nBytesOffset)
{
aPacketBytes = null;
if (NULL == _pPacketAudioDub)
{
_pPacketAudioDub = Functions.av_malloc(Marshal.SizeOf(typeof(AVPacket)));
helpers.WinAPI.memset(_pPacketAudioDub, 0, Marshal.SizeOf(typeof(AVPacket)));
Functions.av_init_packet(_pPacketAudioDub);
_stPacketAudio = (AVPacket)Marshal.PtrToStructure(_pPacketAudioDub, typeof(AVPacket));
}
cTimings.Restart("allocation");
while (true)
{
// NOTE: the audio packet can contain several frames
while (_stPacketAudio.size > 0)
{
if (null == _cFrameAudio)
_cFrameAudio = new Frame();
Marshal.StructureToPtr(_stPacketAudio, _pPacketAudioDub, true);
nLength = Functions.avcodec_decode_audio4(_cFormatAudio.pAVCodecContext, _cFrameAudio, ref bFrameDecoded, _pPacketAudioDub);
cTimings.CheckIn("decode");
if (nLength < 0)
{
_stPacketAudio.size = 0;
break;
}
_stPacketAudio.data += nLength;
_stPacketAudio.size -= nLength;
if (!bFrameDecoded)
continue;
cTimings.Restart("frame");
cSamplesTarget = _cFormatAudio.Transform(_cFormatAudioTarget, new Frame(_cFormatAudio, _cFrameAudio));
//cSamplesTarget = new Frame(_cFormatAudio);
//aPacketBytes = cSamplesTarget.aBytes;
//cSamplesTarget.Dispose();
aPacketBytes = cSamplesTarget.aBytes;
cTimings.Restart("transform");
break;
}
if (null != aPacketBytes)
break;
if (NULL != _pPacketAudio)
{
Functions.av_free_packet(_pPacketAudio);
Functions.av_freep(ref _pPacketAudio);
cTimings.Restart("packet free");
}
while (!_bFileEnd && 1 > _aqAudioPackets.Count)
{
lock (_oSyncRoot)
PacketNext();
}
if (_bFileEnd && 1 > _aqAudioPackets.Count)
break;
lock (_oSyncRoot)
_pPacketAudio = _aqAudioPackets.Dequeue();
stPacket = (AVPacket)Marshal.PtrToStructure(_pPacketAudio, typeof(AVPacket));
_stPacketAudio.data = stPacket.data;
_stPacketAudio.size = stPacket.size;
cTimings.Restart("packets");
}
if (null == aPacketBytes)
throw new Exception("audio packet is null");
nBytesCapacity = aPacketBytes.Length;
if (cFrame.nLength < nBytesOffset + nBytesCapacity)
{
nBytesCapacity = cFrame.nLength - nBytesOffset;
_aBytesRemainder = new byte[aPacketBytes.Length - nBytesCapacity];
Array.Copy(aPacketBytes, nBytesCapacity, _aBytesRemainder, 0, _aBytesRemainder.Length);
}
Array.Copy(aPacketBytes, 0, cFrame.aBuffer, nBytesOffset, nBytesCapacity);
nBytesOffset += nBytesCapacity;
cTimings.Restart("accumulation");
}
cTimings.Stop("frame:decode:audio: >40ms", 40);//FPS
lock (_aqAudioFrames)
_aqAudioFrames.Enqueue(cFrame);
(new Logger()).WriteDebug4("return");
}
abstract public Frame[] Convert(Format cFormatTarget, Frame cFrameSource);
public void VideoFrameNext(Format.Video cFormatSource, Frame cFrameSource)
{
if (NULL == _pStreamVideo)
throw new Exception("there is no video stream in file");
AVStream stAVStream = (AVStream)Marshal.PtrToStructure(_pStreamVideo, typeof(AVStream));
//_nPTSVideo = (double)stAVStream.pts.val * stAVStream.time_base.num / stAVStream.time_base.den;
//(1 / FPS) * sample rate * frame number
if (null == _cFrameVideo)
_cFrameVideo = new Frame(_cFormatVideo, _cFormatVideo.nBufferSize);
Frame[] aFrames = cFormatSource.Convert(_cFormatVideo, cFrameSource, _cFrameVideo);
AVPacket stAVPacket = new AVPacket();
IntPtr pAVPacket;
for (int nIndx = 0; aFrames.Length > nIndx; nIndx++)
{
cFrameSource = aFrames[nIndx];
pAVPacket = Functions.av_malloc((uint)(Marshal.SizeOf(stAVPacket)));
Functions.av_init_packet(pAVPacket);
stAVPacket = (AVPacket)Marshal.PtrToStructure(pAVPacket, typeof(AVPacket));
if (cFrameSource.nPTS != Constants.AV_NOPTS_VALUE)
stAVPacket.pts = Functions.av_rescale_q(cFrameSource.nPTS, _cFormatVideo.stAVCodecContext.time_base, stAVStream.time_base);
if (cFrameSource.bKeyframe)
stAVPacket.flags |= Constants.AV_PKT_FLAG_KEY;
stAVPacket.stream_index = stAVStream.index;
stAVPacket.size = cFrameSource.nLength;
stAVPacket.data = cFrameSource.p;
Marshal.StructureToPtr(stAVPacket, pAVPacket, true);
//System.IO.File.AppendAllText("packets", stAVPacket.pts + "\t" + stAVPacket.size + "\r\n");
_cFormatCtx.PacketWrite(pAVPacket);
Functions.av_free_packet(pAVPacket);
Functions.av_freep(ref pAVPacket);
//cFrameSource.Dispose();
}
}
