bool FFLAVFVideo::SeekTo(int n, int SeekOffset) {
if (SeekMode >= 0) {
int TargetFrame = n + SeekOffset;
if (TargetFrame < 0)
throw FFMS_Exception(FFMS_ERROR_SEEKING, FFMS_ERROR_UNKNOWN,
"Frame accurate seeking is not possible in this file");
if (SeekMode < 3)
TargetFrame = Frames.FindClosestVideoKeyFrame(TargetFrame);
if (SeekMode == 0) {
if (n < CurrentFrame) {
av_seek_frame(FormatContext, VideoTrack, Frames[0].PTS, AVSEEK_FLAG_BACKWARD);
FlushBuffers(CodecContext);
CurrentFrame = 0;
DelayCounter = 0;
InitialDecode = 1;
}
} else {
// 10 frames is used as a margin to prevent excessive seeking since the predicted best keyframe isn't always selected by avformat
if (n < CurrentFrame || TargetFrame > CurrentFrame + 10 || (SeekMode == 3 && n > CurrentFrame + 10)) {
av_seek_frame(FormatContext, VideoTrack, Frames[TargetFrame].PTS, AVSEEK_FLAG_BACKWARD);
FlushBuffers(CodecContext);
DelayCounter = 0;
InitialDecode = 1;
return true;
}
}
} else if (n < CurrentFrame) {
throw FFMS_Exception(FFMS_ERROR_SEEKING, FFMS_ERROR_INVALID_ARGUMENT,
"Non-linear access attempted");
}
return false;
}
FFMS_Frame *FFMatroskaVideo::GetFrame(int n) {
GetFrameCheck(n);
n = Frames.RealFrameNumber(n);
if (LastFrameNum == n)
return &LocalFrame;
bool HasSeeked = false;
int ClosestKF = Frames.FindClosestVideoKeyFrame(n);
if (CurrentFrame > n || ClosestKF > CurrentFrame + 10) {
DelayCounter = 0;
InitialDecode = 1;
PacketNumber = ClosestKF;
CurrentFrame = ClosestKF;
FlushBuffers(CodecContext);
HasSeeked = true;
}
do {
if (CurrentFrame + FFMS_CALCULATE_DELAY >= n || HasSeeked)
CodecContext->skip_frame = AVDISCARD_DEFAULT;
else
CodecContext->skip_frame = AVDISCARD_NONREF;
DecodeNextFrame();
CurrentFrame++;
HasSeeked = false;
} while (CurrentFrame <= n);
LastFrameNum = n;
return OutputFrame(DecodeFrame);
}
void Synchronizer::SynchronizerThread() {
try {
Logger::LogInfo("[Synchronizer::SynchronizerThread] Synchronizer thread started.");
while(!m_should_stop) {
{
SharedLock lock(&m_shared_data);
FlushBuffers(lock.get());
if(lock->m_sync_diagram != NULL) {
double time_in = (double) hrt_time_micro() * 1.0e-6;
double time_out = (double) GetTotalTime(lock.get()) * 1.0e-6;
lock->m_sync_diagram->SetCurrentTime(0, time_in);
lock->m_sync_diagram->SetCurrentTime(1, time_in);
lock->m_sync_diagram->SetCurrentTime(2, time_out);
lock->m_sync_diagram->SetCurrentTime(3, time_out);
lock->m_sync_diagram->Update();
}
}
usleep(10000);
}
Logger::LogInfo("[Synchronizer::SynchronizerThread] Synchronizer thread stopped.");
} catch(const std::exception& e) {
m_error_occurred = true;
Logger::LogError(QString("[Synchronizer::SynchronizerThread] Exception '") + e.what() + "' in synchronizer thread.");
} catch(...) {
m_error_occurred = true;
Logger::LogError("[Synchronizer::SynchronizerThread] Unknown exception in synchronizer thread.");
}
}
void Synchronizer::NewSegment(SharedData* lock) {
FlushBuffers(lock);
if(lock->m_segment_video_started && lock->m_segment_audio_started) {
int64_t segment_start_time, segment_stop_time;
GetSegmentStartStop(lock, &segment_start_time, &segment_stop_time);
lock->m_time_offset += std::max((int64_t) 0, segment_stop_time - segment_start_time);
}
lock->m_video_buffer.clear();
lock->m_audio_buffer.Clear();
InitSegment(lock);
}
void cTCPLinkImpl::cLinkTlsContext::StoreReceivedData(const char * a_Data, size_t a_NumBytes)
{
// Hold self alive for the duration of this function
cLinkTlsContextPtr Self(m_Self);
m_EncryptedData.append(a_Data, a_NumBytes);
// Try to finish a pending handshake:
TryFinishHandshaking();
// Flush any cleartext data that can be "received":
FlushBuffers();
}
void FFMS_AudioSource::SetOutputFormat(FFMS_ResampleOptions const& opt) {
if (opt.SampleRate != AP.SampleRate)
throw FFMS_Exception(FFMS_ERROR_RESAMPLING, FFMS_ERROR_UNSUPPORTED,
"Sample rate changes are currently unsupported.");
#ifndef FFMS_RESAMPLING_ENABLED
if (opt.SampleFormat != AP.SampleFormat || opt.SampleRate != AP.SampleRate || opt.ChannelLayout != AP.ChannelLayout)
throw FFMS_Exception(FFMS_ERROR_RESAMPLING, FFMS_ERROR_UNSUPPORTED,
"FFMS was not built with resampling enabled. The only supported conversion is interleaving planar audio.");
#endif
#ifdef WITH_AVRESAMPLE
if (opt.SampleFormat != AP.SampleFormat || opt.ChannelLayout != AP.ChannelLayout)
throw FFMS_Exception(FFMS_ERROR_RESAMPLING, FFMS_ERROR_UNSUPPORTED,
"FFMS was not built with FFMPEG resampling enabled.");
#endif
// Cache stores audio in the output format, so clear it and reopen the file
Cache.clear();
PacketNumber = 0;
ReopenFile();
FlushBuffers(CodecContext);
BytesPerSample = av_get_bytes_per_sample(static_cast<AVSampleFormat>(opt.SampleFormat)) * av_get_channel_layout_nb_channels(opt.ChannelLayout);
NeedsResample =
opt.SampleFormat != (int)CodecContext->sample_fmt ||
opt.SampleRate != AP.SampleRate ||
opt.ChannelLayout != AP.ChannelLayout ||
opt.ForceResample;
#ifdef FFMS_RESAMPLING_ENABLED
if (!NeedsResample) return;
FFResampleContext newContext;
SetOptions(opt, newContext, resample_options);
av_opt_set_int(newContext, "in_sample_rate", AP.SampleRate, 0);
av_opt_set_int(newContext, "in_sample_fmt", CodecContext->sample_fmt, 0);
av_opt_set_int(newContext, "in_channel_layout", AP.ChannelLayout, 0);
av_opt_set_int(newContext, "out_sample_rate", opt.SampleRate, 0);
#ifdef WITH_SWRESAMPLE
av_opt_set_channel_layout(newContext, "out_channel_layout", opt.ChannelLayout, 0);
av_opt_set_sample_fmt(newContext, "out_sample_fmt", (AVSampleFormat)opt.SampleFormat, 0);
#endif
if (ffms_open(newContext))
throw FFMS_Exception(FFMS_ERROR_RESAMPLING, FFMS_ERROR_UNKNOWN,
"Could not open avresample context");
newContext.swap(ResampleContext);
#endif
}
FFMS_Frame *FFHaaliVideo::GetFrame(int n) {
GetFrameCheck(n);
n = Frames.RealFrameNumber(n);
if (LastFrameNum == n)
return &LocalFrame;
bool HasSeeked = false;
int SeekOffset = 0;
if (n < CurrentFrame || Frames.FindClosestVideoKeyFrame(n) > CurrentFrame + 10) {
ReSeek:
pMMC->Seek(Frames[n + SeekOffset].PTS, MMSF_PREV_KF);
FlushBuffers(CodecContext);
DelayCounter = 0;
InitialDecode = 1;
HasSeeked = true;
}
do {
int64_t StartTime = -1;
if (CurrentFrame + FFMS_CALCULATE_DELAY >= n || HasSeeked)
CodecContext->skip_frame = AVDISCARD_DEFAULT;
else
CodecContext->skip_frame = AVDISCARD_NONREF;
DecodeNextFrame(&StartTime);
if (HasSeeked) {
HasSeeked = false;
if (StartTime < 0 || (CurrentFrame = Frames.FrameFromPTS(StartTime)) < 0) {
// No idea where we are so go back a bit further
if (n + SeekOffset == 0)
throw FFMS_Exception(FFMS_ERROR_SEEKING, FFMS_ERROR_UNKNOWN,
"Frame accurate seeking is not possible in this file");
SeekOffset -= FFMIN(20, n + SeekOffset);
goto ReSeek;
}
}
CurrentFrame++;
} while (CurrentFrame <= n);
LastFrameNum = n;
return OutputFrame(DecodeFrame);
}
void cLuaTCPLink::cLinkSslContext::Send(const AString & a_Data)
{
// Hold self alive for the duration of this function
cLinkSslContextPtr Self(m_Self);
// If the handshake hasn't completed yet, queue the data:
if (!HasHandshaken())
{
m_CleartextData.append(a_Data);
TryFinishHandshaking();
return;
}
// The connection is all set up, write the cleartext data into the SSL context:
WritePlain(a_Data.data(), a_Data.size());
FlushBuffers();
}
void cTCPLinkImpl::cLinkTlsContext::Send(const void * a_Data, size_t a_Length)
{
// Hold self alive for the duration of this function
cLinkTlsContextPtr Self(m_Self);
// If the handshake hasn't completed yet, queue the data:
if (!HasHandshaken())
{
m_CleartextData.append(reinterpret_cast<const char *>(a_Data), a_Length);
TryFinishHandshaking();
return;
}
// The connection is all set up, write the cleartext data into the SSL context:
WritePlain(a_Data, a_Length);
FlushBuffers();
}
DWORD CFileClass::Write(void *pData, int size)
{
DWORD dwWrite = 0;
DWORD dwError = 0;
time_t current_time;
time(¤t_time);
if (m_hFile)
{
if (!WriteFile(m_hFile, pData, size, &dwWrite, NULL))
dwError = GetLastError();
else
{
if (current_time - m_last_time > m_flash_delay)
{
FlushBuffers();
m_last_time = current_time;
}
}
}
return dwWrite;
}
Synchronizer::~Synchronizer() {
// disconnect
ConnectVideoSource(NULL);
ConnectAudioSource(NULL);
// tell the thread to stop
if(m_thread.joinable()) {
Logger::LogInfo("[Synchronizer::~Synchronizer] Telling synchronizer thread to stop ...");
m_should_stop = true;
m_thread.join();
}
// flush one more time
{
SharedLock lock(&m_shared_data);
FlushBuffers(lock.get());
}
// free everything
Free();
}
void cLuaTCPLink::OnRemoteClosed(void)
{
// Check if we're still valid:
if (!m_Callbacks.IsValid())
{
return;
}
// If running in SSL mode and there's data left in the SSL contect, report it:
auto sslContext = m_SslContext;
if (sslContext != nullptr)
{
sslContext->FlushBuffers();
}
// Call the callback:
cPluginLua::cOperation Op(m_Plugin);
if (!Op().Call(cLuaState::cTableRef(m_Callbacks, "OnRemoteClosed"), this))
{
LOGINFO("cTCPLink OnRemoteClosed() callback failed in plugin %s.", m_Plugin.GetName().c_str());
}
Terminated();
}
void EMBeOutputNode::HandleEvent(const media_timed_event* event, bigtime_t lateness, bool realTimeEvent)
{
switch(event -> type)
{
case BTimedEventQueue::B_START:
{
if(RunState() != B_STARTED)
{
// mOutputEnabled = true;
m_vNumberOfReceivedFrames = 0;
m_vStartingTime = TimeSource() -> Now(); //event -> event_time;
vCount = 0;
SendDataStatus(B_DATA_AVAILABLE, m_sOutput.destination, event -> event_time);
}
break;
}
case BTimedEventQueue::B_STOP:
{
FlushBuffers(EventQueue());
SendDataStatus(B_PRODUCER_STOPPED, m_sOutput.destination, event -> event_time);
break;
}
case EM_TIMED_EVENT_RESET:
{
FlushBuffers(EventQueue());
m_vNumberOfReceivedFrames = 0;
// m_vStartingTime = TimeSource() -> Now(); //event -> event_time;
m_vStartingTime = event -> event_time;
vCount = 0;
}
case BTimedEventQueue::B_HANDLE_BUFFER:
{
BBuffer* opBuffer = (BBuffer*) (event -> pointer);
if(opBuffer == NULL)
{
emerr << "ERROR! Received NULL BBuffer in HandleEvent!" << endl;
break;
}
if((RunState() == BMediaEventLooper::B_STARTED) &&
(m_sOutput.destination != media_destination::null))
{
int64 vFrames = EMBeMediaUtility::FramesInBuffer(opBuffer, GetConnectedEMMediaFormat(), EM_TYPE_RAW_AUDIO);
if(mOutputEnabled)
{
opBuffer -> Header() -> start_time = event -> event_time;
opBuffer -> Header() -> type = m_sOutput.format.type;
status_t err = SendBuffer(opBuffer, m_sOutput.destination);
if(err != B_OK)
{
emerr << "ERROR! Could not send buffer to downstream node: " << strerror(err) << endl;
opBuffer -> Recycle();
}
else
{
bool m_vIsCurrentlyRecording = (EMMediaEngine::Instance() -> GetMediaProject() -> IsArmed() && EMMediaEngine::Instance() -> GetMediaProject() -> IsPlaying());
// bool m_vIsCurrentlyPlaying = (! EMMediaEngine::Instance() -> GetMediaProject() -> IsArmed() && EMMediaEngine::Instance() -> GetMediaProject() -> IsPlaying());
if(m_vIsClockMaster && ! m_vIsCurrentlyRecording)
EMMediaTimer::Instance() -> IncreaseNowFrame(vFrames);
}
}
else
opBuffer -> Recycle();
}
else
opBuffer -> Recycle();
break;
}
case EM_TIMED_EVENT_FLUSH_CASH:
{
FlushBuffers(EventQueue());
m_vStartingTime = event -> event_time;
m_vNumberOfReceivedFrames = 0;
Notify(EM_TIMED_EVENT_FLUSH_CASH);
break;
}
default:
{
;//emout_commented_out_4_release << "ERROR! EMBeOutoutNode received unknown event!" << endl;
break;
}
}
}
void cTCPLinkImpl::EventCallback(bufferevent * a_BufferEvent, short a_What, void * a_Self)
{
ASSERT(a_Self != nullptr);
cTCPLinkImplPtr Self = static_cast<cTCPLinkImpl *>(a_Self)->m_Self;
if (Self == nullptr)
{
// The link has already been freed
return;
}
// If an error is reported, call the error callback:
if (a_What & BEV_EVENT_ERROR)
{
// Choose the proper callback to call based on whether we were waiting for connection or not:
int err = EVUTIL_SOCKET_ERROR();
if (Self->m_ConnectCallbacks != nullptr)
{
if (err == 0)
{
// This could be a DNS failure
err = bufferevent_socket_get_dns_error(a_BufferEvent);
}
Self->m_ConnectCallbacks->OnError(err, evutil_socket_error_to_string(err));
}
else
{
Self->m_Callbacks->OnError(err, evutil_socket_error_to_string(err));
if (Self->m_Server == nullptr)
{
cNetworkSingleton::Get().RemoveLink(Self.get());
}
else
{
Self->m_Server->RemoveLink(Self.get());
}
}
Self->m_Self.reset();
return;
}
// Pending connection succeeded, call the connection callback:
if (a_What & BEV_EVENT_CONNECTED)
{
Self->UpdateLocalAddress();
Self->UpdateRemoteAddress();
if (Self->m_ConnectCallbacks != nullptr)
{
Self->m_ConnectCallbacks->OnConnected(*Self);
// Reset the connect callbacks so that later errors get reported through the link callbacks:
Self->m_ConnectCallbacks.reset();
return;
}
}
// If the connection has been closed, call the link callback and remove the connection:
if (a_What & BEV_EVENT_EOF)
{
// If running in TLS mode and there's data left in the TLS contect, report it:
auto tlsContext = Self->m_TlsContext;
if (tlsContext != nullptr)
{
tlsContext->FlushBuffers();
}
Self->m_Callbacks->OnRemoteClosed();
if (Self->m_Server != nullptr)
{
Self->m_Server->RemoveLink(Self.get());
}
else
{
cNetworkSingleton::Get().RemoveLink(Self.get());
}
Self->m_Self.reset();
return;
}
// Unknown event, report it:
LOGWARNING("cTCPLinkImpl: Unhandled LibEvent event %d (0x%x)", a_What, a_What);
ASSERT(!"cTCPLinkImpl: Unhandled LibEvent event");
}
//刷新显示线程
void *RenderAudio(void *arg)
{
if(!arg)
return NULL;
AvManager *manager = (AvManager*)arg;
MediaPacket spkt;
long avsize = 0;
int ret = 0;
//只有在没有停止信号下，才能不断地读取数据
for(;manager->avState != STOP;)
{
//如果是暂停且没有快进时，才可以不断等待
if(manager->avState == PAUSE && !manager->avSeek)
{
usSleep(DEFAULT_AV_WAIT);
continue;
}
ret = RecvDataFromAvQueue(manager->MediaAudio,&spkt);
if(ret < 0)
{
usSleep(DEFAULT_AV_WAIT);
continue;
}
if(manager->avSeek && !IsHardWareAccel())
{
FlushBuffers(AUDIO);
DestroyPacket(&spkt);
continue;
}
if(manager->audioDelay)
{
usSleep(manager->audioDelay);
manager->audioDelay = 0;
}
if(spkt.data && spkt.size > 0)
{
void *abuf = DecodeAudioStream(&spkt,&avsize);
//播放音乐
if(abuf && avsize > 0)
{
PlayWave(abuf,avsize);
//声音时间戳部分
manager->audioClock = (double)avsize/(double)manager->audioBasePara;
if(spkt.pts != AV_NOPTS_VALUE)
manager->playerClock = AVTimeToSecond(spkt.pts,manager->audioTimeBase) + manager->audioClock;
else
manager->playerClock += manager->audioClock;
manager->last_audio_pts = manager->playerClock;
}
}
else
FreeAlloc(spkt.data);
}
return NULL;
}
//刷新视频解码线程
void *RenderVideo(void *arg)
{
if(!arg)
return NULL;
AvManager *manager = (AvManager*)arg;
MediaPacket spkt;
int size = 0,ret = 0;
long avsize = 0;
//只有在没有停止信号下，才能不断地读取数据
for(;manager->avState != STOP;)
{
if(ParseQueueBufferLength(manager->MediaPicture) > CACHE_PICTURE_BUFFER_NUM)
{
usSleep(DEFAULT_AV_WAIT);
continue;
}
if(manager->avState == PAUSE && !manager->avSeek)
{
usSleep(DEFAULT_AV_WAIT);
continue;
}
memset(&spkt,0,sizeof(MediaPacket));
ret = RecvDataFromAvQueue(manager->MediaVideo,&spkt);
if(ret < 0)
{
usSleep(DEFAULT_AV_WAIT);
continue;
}
if(manager->avSeek && !IsHardWareAccel())
{
FlushBuffers(VIDEO);
}
if(spkt.data && spkt.size > 0)
{
void *vbuf = DecodeVideoYUVStream(&spkt,&avsize);
if(vbuf && avsize > 0)
{
vbuf = StartScale(vbuf,avsize,&size,VideoOutPyaddr(),NULL);
if(vbuf && size > 0)
{
MediaPacket mpkt;
memset(&mpkt,0,sizeof(MediaPacket));
mpkt.data = UseAlloc(size);
if(!mpkt.data)
continue;
memcpy(mpkt.data,vbuf,size);
mpkt.size = size;
//时间戳部分
double v_pts = 0;
if(spkt.pts != AV_NOPTS_VALUE)
v_pts = AVTimeToSecond(spkt.pts,manager->videoTimeBase);
else if(spkt.dts != AV_NOPTS_VALUE)
v_pts = AVTimeToSecond(spkt.dts,manager->videoTimeBase);
else
v_pts = 0;
double pts = SynVideo(manager,v_pts);
mpkt.pts = AVTimeToPts(pts,manager->videoTimeBase);
PutDataToTail(manager->MediaPicture,&mpkt);
}
}
}
else
FreeAlloc(spkt.data);
if(!manager->playAudio)
manager->playerClock = manager->videoClock;
}
return NULL;
}
void EnhancedVtoRouter::CloseAndFlushBuffers()
{
FlushBuffers();
this->Close();
}
