int FLVEncoder::EncodeVideo()
{
timeval prev;
//Start
Log(">FLVEncoder encode video\n");
//Allocate media frame
RTMPVideoFrame frame(0,262143);
//Check codec
switch(videoCodec)
{
case VideoCodec::SORENSON:
//Ser Video codec
frame.SetVideoCodec(RTMPVideoFrame::FLV1);
break;
case VideoCodec::H264:
//Ser Video codec
frame.SetVideoCodec(RTMPVideoFrame::AVC);
//Set NAL type
frame.SetAVCType(RTMPVideoFrame::AVCNALU);
//No delay
frame.SetAVCTS(0);
break;
default:
return Error("-Wrong codec type %d\n",videoCodec);
}
//Create the encoder
VideoEncoder *encoder = VideoCodecFactory::CreateEncoder(videoCodec,videoProperties);
///Set frame rate
encoder->SetFrameRate(fps,bitrate,intra);
//Set dimensions
encoder->SetSize(width,height);
//Start capturing
videoInput->StartVideoCapture(width,height,fps);
//The time of the first one
gettimeofday(&prev,NULL);
//No wait for first
DWORD frameTime = 0;
Log(">FLVEncoder encode vide\n");
//Mientras tengamos que capturar
while(encodingVideo)
{
//Nos quedamos con el puntero antes de que lo cambien
BYTE* pic=videoInput->GrabFrame(frameTime);
//Ensure we are still encoding
if (!encodingVideo)
break;
//Check pic
if (!pic)
continue;
//Check if we need to send intra
if (sendFPU)
{
//Set it
encoder->FastPictureUpdate();
//Do not send anymore
sendFPU = false;
}
//Encode next frame
VideoFrame *encoded = encoder->EncodeFrame(pic,videoInput->GetBufferSize());
//Check
if (!encoded)
break;
//Check size
if (frame.GetMaxMediaSize()<encoded->GetLength())
{
//Not enougth space
Error("Not enought space to copy FLV encodec frame [frame:%d,encoded:%d",frame.GetMaxMediaSize(),encoded->GetLength());
//NExt
continue;
}
//Check
if (frameTime)
{
timespec ts;
//Lock
pthread_mutex_lock(&mutex);
//Calculate timeout
calcAbsTimeout(&ts,&prev,frameTime);
//Wait next or stopped
int canceled = !pthread_cond_timedwait(&cond,&mutex,&ts);
//Unlock
pthread_mutex_unlock(&mutex);
//Check if we have been canceled
if (canceled)
//Exit
break;
}
//Set sending time of previous frame
getUpdDifTime(&prev);
//Set timestamp
encoded->SetTimestamp(getDifTime(&first)/1000);
//Set next one
frameTime = 1000/fps;
//Set duration
encoded->SetDuration(frameTime);
//Get full frame
frame.SetVideoFrame(encoded->GetData(),encoded->GetLength());
//Set buffer size
frame.SetMediaSize(encoded->GetLength());
//Check type
if (encoded->IsIntra())
//Set type
frame.SetFrameType(RTMPVideoFrame::INTRA);
else
//Set type
frame.SetFrameType(RTMPVideoFrame::INTER);
//If we need desc but yet not have it
if (!frameDesc && encoded->IsIntra() && videoCodec==VideoCodec::H264)
{
//Create new description
AVCDescriptor desc;
//Set values
desc.SetConfigurationVersion(1);
desc.SetAVCProfileIndication(0x42);
desc.SetProfileCompatibility(0x80);
desc.SetAVCLevelIndication(0x0C);
desc.SetNALUnitLength(3);
//Get encoded data
BYTE *data = encoded->GetData();
//Get size
DWORD size = encoded->GetLength();
//get from frame
desc.AddParametersFromFrame(data,size);
//Crete desc frame
frameDesc = new RTMPVideoFrame(getDifTime(&first)/1000,desc);
//Lock
pthread_mutex_lock(&mutex);
//Send it
SendMediaFrame(frameDesc);
//unlock
pthread_mutex_unlock(&mutex);
}
//Lock
pthread_mutex_lock(&mutex);
//Set timestamp
frame.SetTimestamp(encoded->GetTimeStamp());
//Publish it
SendMediaFrame(&frame);
//For each listener
for(MediaFrameListeners::iterator it = mediaListeners.begin(); it!=mediaListeners.end(); ++it)
//Send it
(*it)->onMediaFrame(RTMPMediaStream::id,*encoded);
//unlock
pthread_mutex_unlock(&mutex);
}
Log("-FLVEncoder encode video end of loop\n");
//Stop the capture
videoInput->StopVideoCapture();
//Check
if (encoder)
//Exit
delete(encoder);
Log("<FLVEncoder encode vide\n");
//Exit
return 1;
}
/****************************************
* RecVideo
* Obtiene los packetes y los muestra
*****************************************/
int MediaBridgeSession::RecVideo()
{
//Coders
VideoDecoder* decoder = NULL;
VideoEncoder* encoder = VideoCodecFactory::CreateEncoder(VideoCodec::SORENSON);
//Create new video frame
RTMPVideoFrame frame(0,262143);
//Set codec
frame.SetVideoCodec(RTMPVideoFrame::FLV1);
int width=0;
int height=0;
DWORD numpixels=0;
Log(">RecVideo\n");
//Mientras tengamos que capturar
while(receivingVideo)
{
///Obtenemos el paquete
RTPPacket* packet = rtpVideo.GetPacket();
//Check
if (!packet)
//Next
continue;
//Get type
VideoCodec::Type type = (VideoCodec::Type)packet->GetCodec();
if ((decoder==NULL) || (type!=decoder->type))
{
//Si habia uno nos lo cargamos
if (decoder!=NULL)
delete decoder;
//Creamos uno dependiendo del tipo
decoder = VideoCodecFactory::CreateDecoder(type);
//Check
if (!decoder)
{
delete(packet);
continue;
}
}
//Lo decodificamos
if(!decoder->DecodePacket(packet->GetMediaData(),packet->GetMediaLength(),0,packet->GetMark()))
{
delete(packet);
continue;
}
//Get mark
bool mark = packet->GetMark();
//Delete packet
delete(packet);
//Check if it is last one
if(!mark)
continue;
//Check size
if (decoder->GetWidth()!=width || decoder->GetHeight()!=height)
{
//Get dimension
width = decoder->GetWidth();
height = decoder->GetHeight();
//Set size
numpixels = width*height*3/2;
//Set also frame rate and bps
encoder->SetFrameRate(25,300,500);
//Set them in the encoder
encoder->SetSize(width,height);
}
//Encode next frame
VideoFrame *encoded = encoder->EncodeFrame(decoder->GetFrame(),numpixels);
//Check
if (!encoded)
break;
//Check size
if (frame.GetMaxMediaSize()<encoded->GetLength())
//Not enougth space
return Error("Not enought space to copy FLV encodec frame [frame:%d,encoded:%d",frame.GetMaxMediaSize(),encoded->GetLength());
//Get full frame
frame.SetVideoFrame(encoded->GetData(),encoded->GetLength());
//Set buffer size
frame.SetMediaSize(encoded->GetLength());
//Check type
if (encoded->IsIntra())
//Set type
frame.SetFrameType(RTMPVideoFrame::INTRA);
else
//Set type
frame.SetFrameType(RTMPVideoFrame::INTER);
//Let the connection set the timestamp
frame.SetTimestamp(getDifTime(&first)/1000);
//Send it
SendMediaFrame(&frame);
}
//Check
if (decoder)
//Delete
delete(decoder);
//Check
if (encoder)
//Delete
delete(encoder);
Log("<RecVideo\n");
}
/*******************************************
* SendVideo
* Capturamos el video y lo mandamos
*******************************************/
int VideoStream::SendVideo()
{
timeval prev;
timeval lastFPU;
DWORD num = 0;
QWORD overslept = 0;
Acumulator bitrateAcu(1000);
Acumulator fpsAcu(1000);
Log(">SendVideo [width:%d,size:%d,bitrate:%d,fps:%d,intra:%d]\n",videoGrabWidth,videoGrabHeight,videoBitrate,videoFPS,videoIntraPeriod);
//Creamos el encoder
VideoEncoder* videoEncoder = VideoCodecFactory::CreateEncoder(videoCodec,videoProperties);
//Comprobamos que se haya creado correctamente
if (videoEncoder == NULL)
//error
return Error("Can't create video encoder\n");
//Comrpobamos que tengamos video de entrada
if (videoInput == NULL)
return Error("No video input");
//Iniciamos el tama�o del video
if (!videoInput->StartVideoCapture(videoGrabWidth,videoGrabHeight,videoFPS))
return Error("Couldn't set video capture\n");
//Start at 80%
int current = videoBitrate*0.8;
//Send at higher bitrate first frame, but skip frames after that so sending bitrate is kept
videoEncoder->SetFrameRate(videoFPS,current*5,videoIntraPeriod);
//No wait for first
QWORD frameTime = 0;
//Iniciamos el tamama�o del encoder
videoEncoder->SetSize(videoGrabWidth,videoGrabHeight);
//The time of the previos one
gettimeofday(&prev,NULL);
//Fist FPU
gettimeofday(&lastFPU,NULL);
//Started
Log("-Sending video\n");
//Mientras tengamos que capturar
while(sendingVideo)
{
//Nos quedamos con el puntero antes de que lo cambien
BYTE *pic = videoInput->GrabFrame(frameTime/1000);
//Check picture
if (!pic)
//Exit
continue;
//Check if we need to send intra
if (sendFPU)
{
//Do not send anymore
sendFPU = false;
//Do not send if we just send one (100ms)
if (getDifTime(&lastFPU)/1000>minFPUPeriod)
{
//Send at higher bitrate first frame, but skip frames after that so sending bitrate is kept
videoEncoder->SetFrameRate(videoFPS,current*5,videoIntraPeriod);
//Reste frametime so it is calcualted afterwards
frameTime = 0;
//Set it
videoEncoder->FastPictureUpdate();
//Update last FPU
getUpdDifTime(&lastFPU);
}
}
//Calculate target bitrate
int target = current;
//Check temporal limits for estimations
if (bitrateAcu.IsInWindow())
{
//Get real sent bitrate during last second and convert to kbits
DWORD instant = bitrateAcu.GetInstantAvg()/1000;
//If we are in quarentine
if (videoBitrateLimitCount)
//Limit sending bitrate
target = videoBitrateLimit;
//Check if sending below limits
else if (instant<videoBitrate)
//Increase a 8% each second or fps kbps
target += (DWORD)(target*0.08/videoFPS)+1;
}
//Check target bitrate agains max conf bitrate
if (target>videoBitrate*1.2)
//Set limit to max bitrate allowing a 20% overflow so instant bitrate can get closer to target
target = videoBitrate*1.2;
//Check limits counter
if (videoBitrateLimitCount>0)
//One frame less of limit
videoBitrateLimitCount--;
//Check if we have a new bitrate
if (target && target!=current)
{
//Reset bitrate
videoEncoder->SetFrameRate(videoFPS,target,videoIntraPeriod);
//Upate current
current = target;
}
//Procesamos el frame
VideoFrame *videoFrame = videoEncoder->EncodeFrame(pic,videoInput->GetBufferSize());
//If was failed
if (!videoFrame)
//Next
continue;
//Increase frame counter
fpsAcu.Update(getTime()/1000,1);
//Check
if (frameTime)
{
timespec ts;
//Lock
pthread_mutex_lock(&mutex);
//Calculate slept time
QWORD sleep = frameTime;
//Remove extra sleep from prev
if (overslept<sleep)
//Remove it
sleep -= overslept;
else
//Do not overflow
sleep = 1;
//Calculate timeout
calcAbsTimeoutNS(&ts,&prev,sleep);
//Wait next or stopped
int canceled = !pthread_cond_timedwait(&cond,&mutex,&ts);
//Unlock
pthread_mutex_unlock(&mutex);
//Check if we have been canceled
if (canceled)
//Exit
break;
//Get differencence
QWORD diff = getDifTime(&prev);
//If it is biffer
if (diff>frameTime)
//Get what we have slept more
overslept = diff-frameTime;
else
//No oversletp (shoulddn't be possible)
overslept = 0;
}
//Increase frame counter
fpsAcu.Update(getTime()/1000,1);
//If first
if (!frameTime)
{
//Set frame time, slower
frameTime = 5*1000000/videoFPS;
//Restore bitrate
videoEncoder->SetFrameRate(videoFPS,current,videoIntraPeriod);
} else {
//Set frame time
frameTime = 1000000/videoFPS;
}
//Add frame size in bits to bitrate calculator
bitrateAcu.Update(getDifTime(&ini)/1000,videoFrame->GetLength()*8);
//Set frame timestamp
videoFrame->SetTimestamp(getDifTime(&ini)/1000);
//Check if we have mediaListener
if (mediaListener)
//Call it
mediaListener->onMediaFrame(*videoFrame);
//Set sending time of previous frame
getUpdDifTime(&prev);
//Calculate sending times based on bitrate
DWORD sendingTime = videoFrame->GetLength()*8/current;
//Adjust to maximum time
if (sendingTime>frameTime/1000)
//Cap it
sendingTime = frameTime/1000;
//If it was a I frame
if (videoFrame->IsIntra())
//Clean rtp rtx buffer
rtp.FlushRTXPackets();
//Send it smoothly
smoother.SendFrame(videoFrame,sendingTime);
//Dump statistics
if (num && ((num%videoFPS*10)==0))
{
Debug("-Send bitrate target=%d current=%d avg=%llf rate=[%llf,%llf] fps=[%llf,%llf] limit=%d\n",target,current,bitrateAcu.GetInstantAvg()/1000,bitrateAcu.GetMinAvg()/1000,bitrateAcu.GetMaxAvg()/1000,fpsAcu.GetMinAvg(),fpsAcu.GetMaxAvg(),videoBitrateLimit);
bitrateAcu.ResetMinMax();
fpsAcu.ResetMinMax();
}
num++;
}
Log("-SendVideo out of loop\n");
//Terminamos de capturar
videoInput->StopVideoCapture();
//Check
if (videoEncoder)
//Borramos el encoder
delete videoEncoder;
//Salimos
Log("<SendVideo [%d]\n",sendingVideo);
return 0;
}