/****************************************
* RecText
* Obtiene los packetes y los muestra
*****************************************/
int MediaBridgeSession::RecText()
{
DWORD timeStamp=0;
DWORD lastSeq = RTPPacket::MaxExtSeqNum;
Log(">RecText\n");
//Mientras tengamos que capturar
while(receivingText)
{
//Get packet
RTPPacket *packet = rtpText.GetPacket();
//Check packet
if (!packet)
continue;
//Get data
BYTE* data = packet->GetMediaData();
//And length
DWORD size = packet->GetMediaLength();
//Get extended sequence number
DWORD seq = packet->GetExtSeqNum();
//Lost packets since last one
DWORD lost = 0;
//If not first
if (lastSeq!=RTPPacket::MaxExtSeqNum)
//Calculate losts
lost = seq-lastSeq-1;
//Update last sequence number
lastSeq = seq;
//Get type
TextCodec::Type type = (TextCodec::Type)packet->GetCodec();
//Check the type of data
if (type==TextCodec::T140RED)
{
//Get redundant packet
RTPRedundantPacket* red = (RTPRedundantPacket*)packet;
//Check lost packets count
if (lost == 0)
{
//Create text frame
TextFrame frame(timeStamp ,red->GetPrimaryPayloadData(),red->GetPrimaryPayloadSize());
//Create new timestamp associated to latest media time
RTMPMetaData meta(getDifTime(&first)/1000);
//Add text name
meta.AddParam(new AMFString(L"onText"));
//Set data
meta.AddParam(new AMFString(frame.GetWChar()));
//Send data
SendMetaData(&meta);
} else {
//Timestamp of first packet (either receovered or not)
DWORD ts = timeStamp;
//Check if we have any red pacekt
if (red->GetRedundantCount()>0)
//Get the timestamp of first redundant packet
ts = red->GetRedundantTimestamp(0);
//If we have lost too many
if (lost>red->GetRedundantCount())
//Get what we have available only
lost = red->GetRedundantCount();
//For each lonot recoveredt packet send a mark
for (int i=red->GetRedundantCount();i<lost;i++)
{
//Create frame of lost replacement
TextFrame frame(ts,LOSTREPLACEMENT,sizeof(LOSTREPLACEMENT));
//Create new timestamp associated to latest media time
RTMPMetaData meta(getDifTime(&first)/1000);
//Add text name
meta.AddParam(new AMFString(L"onText"));
//Set data
meta.AddParam(new AMFString(frame.GetWChar()));
//Send data
SendMetaData(&meta);
}
//Fore each recovered packet
for (int i=red->GetRedundantCount()-lost;i<red->GetRedundantCount();i++)
{
//Create frame from recovered data
TextFrame frame(red->GetRedundantTimestamp(i),red->GetRedundantPayloadData(i),red->GetRedundantPayloadSize(i));
//Create new timestamp associated to latest media time
RTMPMetaData meta(getDifTime(&first)/1000);
//Add text name
meta.AddParam(new AMFString(L"onText"));
//Set data
meta.AddParam(new AMFString(frame.GetWChar()));
//Send data
SendMetaData(&meta);
}
}
} else {
//Create frame
TextFrame frame(timeStamp,data,size);
//Create new timestamp associated to latest media time
RTMPMetaData meta(getDifTime(&first)/1000);
//Add text name
meta.AddParam(new AMFString(L"onText"));
//Set data
meta.AddParam(new AMFString(frame.GetWChar()));
//Send data
SendMetaData(&meta);
}
}
Log("<RecText\n");
}
int FLVEncoder::StartEncoding()
{
Log(">Start encoding FLV [id:%d]\n",id);
//Si estabamos mandando tenemos que parar
if (encodingAudio || encodingVideo)
//paramos
StopEncoding();
//Set init time
getUpdDifTime(&first);
//Check if got old meta
if (meta)
//Delete
delete(meta);
//Create metadata object
meta = new RTMPMetaData(0);
//Set name
meta->AddParam(new AMFString(L"@setDataFrame"));
//Set name
meta->AddParam(new AMFString(L"onMetaData"));
//Create properties string
AMFEcmaArray *prop = new AMFEcmaArray();
//Set audio properties
switch(audioCodec)
{
case AudioCodec::SPEEX16:
prop->AddProperty(L"audiocodecid" ,(float)RTMPAudioFrame::SPEEX ); //Number Audio codec ID used in the file (see E.4.2.1 for available SoundFormat values)
prop->AddProperty(L"audiosamplerate" ,(float)16000.0 ); // Number Frequency at which the audio stream is replayed
break;
case AudioCodec::NELLY11:
prop->AddProperty(L"audiocodecid" ,(float)RTMPAudioFrame::NELLY ); //Number Audio codec ID used in the file (see E.4.2.1 for available SoundFormat values)
prop->AddProperty(L"audiosamplerate" ,(float)11025.0 ); // Number Frequency at which the audio stream is replayed
break;
case AudioCodec::NELLY8:
prop->AddProperty(L"audiocodecid" ,(float)RTMPAudioFrame::NELLY8khz ); //Number Audio codec ID used in the file (see E.4.2.1 for available SoundFormat values)
prop->AddProperty(L"audiosamplerate" ,(float)8000.0 ); // Number Frequency at which the audio stream is replayed
break;
}
prop->AddProperty(L"stereo" ,new AMFBoolean(false) ); // Boolean Indicating stereo audio
prop->AddProperty(L"audiodelay" ,0.0 ); // Number Delay introduced by the audio codec in seconds
//Set video codecs
if (videoCodec==VideoCodec::SORENSON)
//Set number
prop->AddProperty(L"videocodecid" ,(float)RTMPVideoFrame::FLV1 ); // Number Video codec ID used in the file (see E.4.3.1 for available CodecID values)
else if (videoCodec==VideoCodec::H264)
//AVC
prop->AddProperty(L"videocodecid" ,new AMFString(L"avc1") ); // Number Video codec ID used in the file (see E.4.3.1 for available CodecID values)
prop->AddProperty(L"framerate" ,(float)fps ); // Number Number of frames per second
prop->AddProperty(L"height" ,(float)height ); // Number Height of the video in pixels
prop->AddProperty(L"videodatarate" ,(float)bitrate ); // Number Video bit rate in kilobits per second
prop->AddProperty(L"width" ,(float)width ); // Number Width of the video in pixels
prop->AddProperty(L"canSeekToEnd" ,new AMFBoolean(false) ); // Boolean Indicating the last video frame is a key frame
//Add param
meta->AddParam(prop);
//Send metadata
SendMetaData(meta);
//If got audio
if (audioInput)
{
//We are enconding
encodingAudio = 1;
//Start thread
createPriorityThread(&encodingAudioThread,startEncodingAudio,this,1);
}
//If got video
if (videoInput)
{
//We are enconding
encodingVideo = 1;
//Start thread
createPriorityThread(&encodingVideoThread,startEncodingVideo,this,1);
}
Log("<Stop encoding FLV [%d]\n",encodingAudio);
return 1;
}
