668 lines
20 KiB
C++
668 lines
20 KiB
C++
/********************************************************************************
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Copyright (C) 2012 Hugh Bailey <obs.jim@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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********************************************************************************/
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#include "Main.h"
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#include "RTMPStuff.h"
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void rtmp_log_output(int level, const char *format, va_list vl)
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{
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int size = _vscprintf(format, vl);
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LPSTR lpTemp = (LPSTR)Allocate(size+1);
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vsprintf_s(lpTemp, size+1, format, vl);
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// OSDebugOut(TEXT("%S\r\n"), lpTemp);
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Log(TEXT("%S\r\n"), lpTemp);
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Free(lpTemp);
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}
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struct NetworkPacket
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{
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List<BYTE> data;
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DWORD timestamp;
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PacketType type;
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};
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class RTMPPublisher : public NetworkStream
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{
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RTMP *rtmp;
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HANDLE hSendSempahore;
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HANDLE hDataMutex;
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HANDLE hSendThread;
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bool bStopping;
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int packetWaitType;
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List<NetworkPacket> Packets;
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UINT numVideoPackets;
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UINT maxVideoPackets, BFrameThreshold;
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QWORD bytesSent;
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//UINT numBFramesDumped;
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//all data sending is done in yet another separate thread to prevent blocking in the main capture thread
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void SendLoop()
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{
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traceIn(RTMPPublisher::SendLoop);
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while(WaitForSingleObject(hSendSempahore, INFINITE) == WAIT_OBJECT_0 && !bStopping && RTMP_IsConnected(rtmp))
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{
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/*
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//--------------------------------------------
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// read
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DWORD pendingBytes = 0;
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ioctlsocket(rtmp->m_sb.sb_socket, FIONREAD, &pendingBytes);
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if(pendingBytes)
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{
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RTMPPacket packet;
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zero(&packet, sizeof(packet));
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while(RTMP_ReadPacket(rtmp, &packet) && !RTMPPacket_IsReady(&packet) && RTMP_IsConnected(rtmp));
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if(!RTMP_IsConnected(rtmp))
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{
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App->PostStopMessage();
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bStopping = true;
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break;
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}
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RTMPPacket_Free(&packet);
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}*/
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//--------------------------------------------
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// send
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OSEnterMutex(hDataMutex);
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if(Packets.Num() == 0)
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{
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OSLeaveMutex(hDataMutex);
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continue;
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}
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PacketType type = Packets[0].type;
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DWORD timestamp = Packets[0].timestamp;
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List<BYTE> packetData;
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packetData.TransferFrom(Packets[0].data);
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Packets.Remove(0);
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if(type <= PacketType_VideoHigh)
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numVideoPackets--;
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OSLeaveMutex(hDataMutex);
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//--------------------------------------------
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RTMPPacket packet;
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packet.m_nChannel = (type == PacketType_Audio) ? 0x5 : 0x4;
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packet.m_headerType = RTMP_PACKET_SIZE_MEDIUM;
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packet.m_packetType = (type == PacketType_Audio) ? RTMP_PACKET_TYPE_AUDIO : RTMP_PACKET_TYPE_VIDEO;
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packet.m_nTimeStamp = timestamp;
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packet.m_nInfoField2 = rtmp->m_stream_id;
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packet.m_hasAbsTimestamp = TRUE;
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packet.m_nBodySize = packetData.Num()-RTMP_MAX_HEADER_SIZE;
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packet.m_body = (char*)packetData.Array()+RTMP_MAX_HEADER_SIZE;
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if(!RTMP_SendPacket(rtmp, &packet, FALSE))
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{
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if(!RTMP_IsConnected(rtmp))
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{
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App->PostStopMessage();
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bStopping = true;
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break;
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}
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}
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bytesSent += packetData.Num();
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}
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traceOut;
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}
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static DWORD SendThread(RTMPPublisher *publisher)
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{
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publisher->SendLoop();
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return 0;
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}
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//video packet count exceeding maximum. find lowest priority frame to dump
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void DoIFrameDelay()
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{
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int prevWaitType = packetWaitType;
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while(packetWaitType < PacketType_VideoHighest)
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{
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if(packetWaitType == PacketType_VideoHigh)
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{
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UINT bestItem = INVALID;
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bool bFoundIFrame = false, bFoundFrameBeforeIFrame = false;
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for(int i=int(Packets.Num())-1; i>=0; i--)
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{
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NetworkPacket &packet = Packets[i];
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if(packet.type == PacketType_Audio)
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continue;
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if(packet.type == packetWaitType)
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{
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if(bFoundIFrame)
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{
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bestItem = UINT(i);
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bFoundFrameBeforeIFrame = true;
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break;
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}
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else if(bestItem == INVALID)
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bestItem = UINT(i);
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}
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else if(packet.type == PacketType_VideoHighest)
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bFoundIFrame = true;
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}
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if(bestItem != INVALID)
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{
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NetworkPacket &bestPacket = Packets[bestItem];
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bestPacket.data.Clear();
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Packets.Remove(bestItem);
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numVideoPackets--;
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//disposing P-frames will corrupt the rest of the frame group, so you have to wait until another I-frame
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if(!bFoundIFrame || !bFoundFrameBeforeIFrame)
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packetWaitType = PacketType_VideoHighest;
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else
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packetWaitType = prevWaitType;
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return;
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}
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}
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else
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{
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bool bRemovedPacket = false;
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for(UINT i=0; i<Packets.Num(); i++)
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{
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NetworkPacket &packet = Packets[i];
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if(packet.type == PacketType_Audio)
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continue;
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if(bRemovedPacket)
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{
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if(packet.type >= packetWaitType)
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{
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packetWaitType = PacketType_VideoDisposable;
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break;
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}
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else //clear out following dependent packets of lower priority
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{
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packet.data.Clear();
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Packets.Remove(i--);
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numVideoPackets--;
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//numBFramesDumped++;
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}
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}
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else if(packet.type == packetWaitType)
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{
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packet.data.Clear();
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Packets.Remove(i--);
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numVideoPackets--;
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//numBFramesDumped++;
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bRemovedPacket = true;
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}
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}
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if(bRemovedPacket)
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break;
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}
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packetWaitType++;
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}
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}
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void DumpBFrame()
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{
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int prevWaitType = packetWaitType;
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bool bRemovedPacket = false;
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while(packetWaitType < PacketType_VideoHigh)
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{
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for(UINT i=0; i<Packets.Num(); i++)
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{
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NetworkPacket &packet = Packets[i];
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if(packet.type == PacketType_Audio)
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continue;
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if(bRemovedPacket)
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{
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if(packet.type >= packetWaitType)
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{
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packetWaitType = PacketType_VideoDisposable;
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break;
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}
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else //clear out following dependent packets of lower priority
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{
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packet.data.Clear();
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Packets.Remove(i--);
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numVideoPackets--;
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//numBFramesDumped++;
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}
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}
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else if(packet.type == packetWaitType)
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{
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packet.data.Clear();
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Packets.Remove(i--);
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numVideoPackets--;
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//numBFramesDumped++;
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bRemovedPacket = true;
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}
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}
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if(bRemovedPacket)
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break;
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packetWaitType++;
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}
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if(!bRemovedPacket)
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packetWaitType = prevWaitType;
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}
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List<BYTE> sendBuffer;
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int curSendBufferLen;
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static int BufferedSend(RTMPSockBuf *sb, const char *buf, int len, RTMPPublisher *network)
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{
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int newTotal = network->curSendBufferLen+len;
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//buffer full, send
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if(newTotal >= int(network->sendBuffer.Num()))
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{
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int pendingBytes = newTotal-network->sendBuffer.Num();
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int copyCount = network->sendBuffer.Num()-network->curSendBufferLen;
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mcpy(network->sendBuffer.Array()+network->curSendBufferLen, buf, copyCount);
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BYTE *lpTemp = network->sendBuffer.Array();
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int totalBytesSent = network->sendBuffer.Num();
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while(totalBytesSent > 0)
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{
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int nBytes = send(sb->sb_socket, (const char*)lpTemp, totalBytesSent, 0);
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if(nBytes < 0)
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return nBytes;
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if(nBytes == 0)
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return 0;
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totalBytesSent -= nBytes;
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lpTemp += nBytes;
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}
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network->curSendBufferLen = pendingBytes;
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if(pendingBytes)
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mcpy(network->sendBuffer.Array(), buf+copyCount, pendingBytes);
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}
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else
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{
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if(len)
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{
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mcpy(network->sendBuffer.Array()+network->curSendBufferLen, buf, len);
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network->curSendBufferLen = newTotal;
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}
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}
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return len;
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}
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public:
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RTMPPublisher(RTMP *rtmpIn)
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{
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traceIn(RTMPPublisher::RTMPPublisher);
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rtmp = rtmpIn;
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sendBuffer.SetSize(32768);
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curSendBufferLen = 0;
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rtmp->m_customSendFunc = (CUSTOMSEND)RTMPPublisher::BufferedSend;
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rtmp->m_customSendParam = this;
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rtmp->m_bCustomSend = TRUE;
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hSendSempahore = CreateSemaphore(NULL, 0, 0x7FFFFFFFL, NULL);
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if(!hSendSempahore)
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CrashError(TEXT("RTMPPublisher: Could not create semaphore"));
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hDataMutex = OSCreateMutex();
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if(!hDataMutex)
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CrashError(TEXT("RTMPPublisher: Could not create mutex"));
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hSendThread = OSCreateThread((XTHREAD)RTMPPublisher::SendThread, this);
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if(!hSendThread)
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CrashError(TEXT("RTMPPublisher: Could not create thread"));
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packetWaitType = 0;
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BFrameThreshold = 30; //when it starts cutting out b frames
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maxVideoPackets = 70; //when it starts cutting out p frames
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traceOut;
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}
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~RTMPPublisher()
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{
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traceIn(RTMPPublisher::~RTMPPublisher);
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bStopping = true;
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ReleaseSemaphore(hSendSempahore, 1, NULL);
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OSTerminateThread(hSendThread, 20000);
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CloseHandle(hSendSempahore);
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OSCloseMutex(hDataMutex);
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//--------------------------
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for(UINT i=0; i<Packets.Num(); i++)
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Packets[i].data.Clear();
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Packets.Clear();
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//Log(TEXT("num b frames dumped: %u"), numBFramesDumped);
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//--------------------------
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if(rtmp)
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{
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RTMP_Close(rtmp);
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RTMP_Free(rtmp);
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}
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traceOut;
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}
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void SendPacket(BYTE *data, UINT size, DWORD timestamp, PacketType type)
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{
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traceIn(RTMPPublisher::SendPacket);
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if(!bStopping)
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{
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List<BYTE> paddedData;
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paddedData.SetSize(size+RTMP_MAX_HEADER_SIZE);
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mcpy(paddedData.Array()+RTMP_MAX_HEADER_SIZE, data, size);
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if(type >= packetWaitType)
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{
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if(type != PacketType_Audio)
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{
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packetWaitType = PacketType_VideoDisposable;
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if(type <= PacketType_VideoHigh)
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numVideoPackets++;
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}
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//-----------------
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OSEnterMutex(hDataMutex);
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NetworkPacket &netPacket = *Packets.CreateNew();
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netPacket.type = type;
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netPacket.timestamp = timestamp;
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netPacket.data.TransferFrom(paddedData);
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//begin dumping b frames if there's signs of lag
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if(numVideoPackets > BFrameThreshold)
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DumpBFrame();
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if(numVideoPackets > maxVideoPackets)
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DoIFrameDelay();
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OSLeaveMutex(hDataMutex);
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//-----------------
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ReleaseSemaphore(hSendSempahore, 1, NULL);
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}
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/*RTMPPacket packet;
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packet.m_nChannel = bAudio ? 0x5 : 0x4;
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packet.m_headerType = RTMP_PACKET_SIZE_MEDIUM;
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packet.m_packetType = bAudio ? RTMP_PACKET_TYPE_AUDIO : RTMP_PACKET_TYPE_VIDEO;
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packet.m_nTimeStamp = timestamp;
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packet.m_nInfoField2 = rtmp->m_stream_id;
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packet.m_hasAbsTimestamp = TRUE;
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List<BYTE> paddedData;
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paddedData.SetSize(size+RTMP_MAX_HEADER_SIZE);
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mcpy(paddedData.Array()+RTMP_MAX_HEADER_SIZE, data, size);
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packet.m_nBodySize = size;
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packet.m_body = (char*)paddedData.Array()+RTMP_MAX_HEADER_SIZE;
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if(!RTMP_SendPacket(rtmp, &packet, FALSE))
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{
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if(!RTMP_IsConnected(rtmp))
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App->PostStopMessage();
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}*/
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}
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traceOut;
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}
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void BeginPublishing()
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{
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traceIn(RTMPPublisher::BeginPublishing);
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RTMPPacket packet;
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char pbuf[2048], *pend = pbuf+sizeof(pbuf);
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packet.m_nChannel = 0x03; // control channel (invoke)
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packet.m_headerType = RTMP_PACKET_SIZE_LARGE;
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packet.m_packetType = RTMP_PACKET_TYPE_INVOKE;
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packet.m_nTimeStamp = 0;
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packet.m_nInfoField2 = rtmp->m_stream_id;
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packet.m_hasAbsTimestamp = TRUE;
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packet.m_body = pbuf + RTMP_MAX_HEADER_SIZE;
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char *enc = packet.m_body;
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enc = AMF_EncodeString(enc, pend, &av_send);
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enc = AMF_EncodeNumber(enc, pend, ++rtmp->m_numInvokes);
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*enc++ = AMF_NULL;
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enc = AMF_EncodeString(enc, pend, &av_setDataFrame);
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enc = AMF_EncodeString(enc, pend, &av_onMetaData);
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enc = App->EncMetaData(enc, pend);
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packet.m_nBodySize = enc - packet.m_body;
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if(!RTMP_SendPacket(rtmp, &packet, FALSE))
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{
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App->PostStopMessage();
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return;
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}
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//----------------------------------------------
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packet.m_nChannel = 0x04; // source channel (video)
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packet.m_headerType = RTMP_PACKET_SIZE_LARGE;
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packet.m_packetType = RTMP_PACKET_TYPE_VIDEO;
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List<BYTE> packetPadding;
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DataPacket mediaHeaders;
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App->GetVideoHeaders(mediaHeaders);
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packetPadding.SetSize(RTMP_MAX_HEADER_SIZE);
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packetPadding.AppendArray(mediaHeaders.lpPacket, mediaHeaders.size);
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packet.m_body = (char*)packetPadding.Array()+RTMP_MAX_HEADER_SIZE;
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packet.m_nBodySize = mediaHeaders.size;
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if(!RTMP_SendPacket(rtmp, &packet, FALSE))
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{
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App->PostStopMessage();
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return;
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}
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//----------------------------------------------
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packet.m_nChannel = 0x05; // audio channel
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packet.m_packetType = RTMP_PACKET_TYPE_AUDIO;
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App->GetAudioHeaders(mediaHeaders);
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packetPadding.SetSize(RTMP_MAX_HEADER_SIZE);
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packetPadding.AppendArray(mediaHeaders.lpPacket, mediaHeaders.size);
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packet.m_body = (char*)packetPadding.Array()+RTMP_MAX_HEADER_SIZE;
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packet.m_nBodySize = mediaHeaders.size;
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if(!RTMP_SendPacket(rtmp, &packet, FALSE))
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{
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App->PostStopMessage();
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return;
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}
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traceOut;
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}
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double GetPacketStrain() const
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{
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return double(numVideoPackets)/double(maxVideoPackets)*100.0;
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}
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QWORD GetCurrentSentBytes()
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{
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return bytesSent;
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}
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};
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NetworkStream* CreateRTMPPublisher()
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{
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traceIn(CreateRTMPPublisher);
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//------------------------------------------------------
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// set up URL
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String strURL;
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int serviceID = AppConfig->GetInt (TEXT("Publish"), TEXT("Service"));
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String strServer = AppConfig->GetString(TEXT("Publish"), TEXT("Server"));
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String strChannel = AppConfig->GetString(TEXT("Publish"), TEXT("Channel"));
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String strPlayPath = AppConfig->GetString(TEXT("Publish"), TEXT("PlayPath"));
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if(!strServer.IsValid())
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{
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MessageBox(hwndMain, TEXT("No server specified to connect to"), NULL, MB_ICONERROR);
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return NULL;
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}
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if(!strChannel.IsValid())
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{
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MessageBox(hwndMain, TEXT("No channel specified"), NULL, MB_ICONERROR);
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return NULL;
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}
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if(serviceID != 0)
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{
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XConfig serverData;
|
|
if(!serverData.Open(TEXT("services.xconfig")))
|
|
{
|
|
MessageBox(hwndMain, TEXT("Could not open services.xconfig"), NULL, MB_ICONERROR);
|
|
return NULL;
|
|
}
|
|
|
|
XElement *services = serverData.GetElement(TEXT("services"));
|
|
if(!services)
|
|
{
|
|
MessageBox(hwndMain, TEXT("Could not any services in services.xconfig"), NULL, MB_ICONERROR);
|
|
return NULL;
|
|
}
|
|
|
|
XElement *service = services->GetElementByID(serviceID-1);
|
|
if(!service)
|
|
{
|
|
MessageBox(hwndMain, TEXT("Could not find the service specified in services.xconfig"), NULL, MB_ICONERROR);
|
|
return NULL;
|
|
}
|
|
|
|
XElement *servers = service->GetElement(TEXT("servers"));
|
|
if(!servers)
|
|
{
|
|
MessageBox(hwndMain, TEXT("Could not find any servers for the service specified in services.xconfig"), NULL, MB_ICONERROR);
|
|
return NULL;
|
|
}
|
|
|
|
XDataItem *item = servers->GetDataItem(strServer);
|
|
if(!item)
|
|
{
|
|
MessageBox(hwndMain, TEXT("Could not find any server specified for the service specified in services.xconfig"), NULL, MB_ICONERROR);
|
|
return NULL;
|
|
}
|
|
|
|
strServer = item->GetData();
|
|
}
|
|
|
|
strURL << TEXT("rtmp://") << strServer << TEXT("/") << strChannel;
|
|
if(strPlayPath.IsValid())
|
|
strURL << TEXT("/") << strPlayPath;
|
|
|
|
//------------------------------------------------------
|
|
|
|
RTMP *rtmp = RTMP_Alloc();
|
|
RTMP_Init(rtmp);
|
|
/*RTMP_LogSetCallback(rtmp_log_output);
|
|
RTMP_LogSetLevel(RTMP_LOGDEBUG2);*/
|
|
|
|
LPSTR lpAnsiURL = strURL.CreateUTF8String();
|
|
|
|
if(!RTMP_SetupURL(rtmp, lpAnsiURL))
|
|
{
|
|
MessageBox(hwndMain, Str("Connection.CouldNotParseURL"), NULL, MB_ICONERROR);
|
|
RTMP_Free(rtmp);
|
|
return NULL;
|
|
}
|
|
|
|
RTMP_EnableWrite(rtmp); //set it to publish
|
|
|
|
//rtmp->m_bUseNagle = 1;
|
|
|
|
if(!RTMP_Connect(rtmp, NULL))
|
|
{
|
|
MessageBox(hwndMain, Str("Connection.CouldNotConnect"), NULL, MB_ICONERROR);
|
|
RTMP_Free(rtmp);
|
|
return NULL;
|
|
}
|
|
|
|
if(!RTMP_ConnectStream(rtmp, 0))
|
|
{
|
|
MessageBox(hwndMain, Str("Connection.InvalidStream"), NULL, MB_ICONERROR);
|
|
RTMP_Close(rtmp);
|
|
RTMP_Free(rtmp);
|
|
return NULL;
|
|
}
|
|
|
|
Free(lpAnsiURL);
|
|
|
|
return new RTMPPublisher(rtmp);
|
|
|
|
traceOut;
|
|
}
|