ZoneMinder/src/zm_rtp_ctrl.cpp at master · bountysource-support/ZoneMinder · GitHub

History

349 lines (302 loc) · 12.2 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

// ZoneMinder RTCP Class Implementation, $Date$, $Revision$

// This program is free software; you can redistribute it and/or

// modify it under the terms of the GNU General Public License

// as published by the Free Software Foundation; either version 2

// of the License, or (at your option) any later version.

// This program is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License

// along with this program; if not, write to the Free Software

// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

#include "zm.h"

#if HAVE_LIBAVFORMAT

#include "zm_rtp_ctrl.h"

#include "zm_time.h"

#include "zm_rtsp.h"

#include <errno.h>

RtpCtrlThread::RtpCtrlThread( RtspThread &rtspThread, RtpSource &rtpSource ) : mRtspThread( rtspThread ), mRtpSource( rtpSource ), mStop( false )

{

}

int RtpCtrlThread::recvPacket( const unsigned char *packet, ssize_t packetLen )

{

const RtcpPacket *rtcpPacket;

rtcpPacket = (RtcpPacket *)packet;

int consumed = 0;

//printf( "C: " );

//for ( int i = 0; i < packetLen; i++ )

//printf( "%02x ", (unsigned char)packet[i] );

//printf( "\n" );

int ver = rtcpPacket->header.version;

int count = rtcpPacket->header.count;

int pt = rtcpPacket->header.pt;

int len = ntohs(rtcpPacket->header.lenN);

Debug( 5, "RTCP Ver: %d", ver );

Debug( 5, "RTCP Count: %d", count );

Debug( 5, "RTCP Pt: %d", pt );

Debug( 5, "RTCP len: %d", len );

switch( pt )

{

case RTCP_SR :

{

uint32_t ssrc = ntohl(rtcpPacket->body.sr.ssrcN);

Debug( 5, "RTCP Got SR (%x)", ssrc );

if ( mRtpSource.getSsrc() )

{

if ( ssrc != mRtpSource.getSsrc() )

{

Warning( "Discarding packet for unrecognised ssrc %x", ssrc );

return( -1 );

}

else if ( ssrc )

{

mRtpSource.setSsrc( ssrc );

}

if ( len > 1 )

{

//printf( "NTPts:%d.%d, RTPts:%d\n", $ntptsmsb, $ntptslsb, $rtpts );

uint16_t ntptsmsb = ntohl(rtcpPacket->body.sr.ntpSecN);

uint16_t ntptslsb = ntohl(rtcpPacket->body.sr.ntpFracN);

//printf( "NTPts:%x.%04x, RTPts:%x\n", $ntptsmsb, $ntptslsb, $rtpts );

//printf( "Pkts:$sendpkts, Octs:$sendocts\n" );

uint32_t rtpTime = ntohl(rtcpPacket->body.sr.rtpTsN);

mRtpSource.updateRtcpData( ntptsmsb, ntptslsb, rtpTime );

}

break;

}

case RTCP_SDES :

{

ssize_t contentLen = packetLen - sizeof(rtcpPacket->header);

while ( contentLen )

{

Debug( 5, "RTCP CL: %zd", contentLen );

uint32_t ssrc = ntohl(rtcpPacket->body.sdes.srcN);

Debug( 5, "RTCP Got SDES (%x), %d items", ssrc, count );

if ( mRtpSource.getSsrc() && (ssrc != mRtpSource.getSsrc()) )

{

Warning( "Discarding packet for unrecognised ssrc %x", ssrc );

return( -1 );

}

unsigned char *sdesPtr = (unsigned char *)&rtcpPacket->body.sdes.item;

for ( int i = 0; i < count; i++ )

{

RtcpSdesItem *item = (RtcpSdesItem *)sdesPtr;

Debug( 5, "RTCP Item length %d", item->len );

switch( item->type )

{

case RTCP_SDES_CNAME :

{

std::string cname( item->data, item->len );

Debug( 5, "RTCP Got CNAME %s", cname.c_str() );

break;

}

case RTCP_SDES_END :

case RTCP_SDES_NAME :

case RTCP_SDES_EMAIL :

case RTCP_SDES_PHONE :

case RTCP_SDES_LOC :

case RTCP_SDES_TOOL :

case RTCP_SDES_NOTE :

case RTCP_SDES_PRIV :

default :

{

Error( "Received unexpected SDES item type %d, ignoring", item->type );

return( -1 );

}

int paddedLen = 4+2+item->len+1; // Add null byte

paddedLen = (((paddedLen-1)/4)+1)*4;

Debug( 5, "RTCP PL:%d", paddedLen );

sdesPtr += paddedLen;

contentLen -= paddedLen;

}

break;

}

case RTCP_BYE :

{

Debug( 5, "RTCP Got BYE" );

mStop = true;

break;

}

case RTCP_APP :

{

// Ignoring as per RFC 3550

Debug( 5, "Received RTCP_APP packet, ignoring.");

break;

}

case RTCP_RR :

default :

{

Error( "Received unexpected packet type %d, ignoring", pt );

return( -1 );

}

consumed = sizeof(uint32_t)*(len+1);

return( consumed );

}

int RtpCtrlThread::generateRr( const unsigned char *packet, ssize_t packetLen )

{

RtcpPacket *rtcpPacket = (RtcpPacket *)packet;

int byteLen = sizeof(rtcpPacket->header)+sizeof(rtcpPacket->body.rr)+sizeof(rtcpPacket->body.rr.rr[0]);

int wordLen = ((byteLen-1)/sizeof(uint32_t))+1;

rtcpPacket->header.version = RTP_VERSION;

rtcpPacket->header.p = 0;

rtcpPacket->header.pt = RTCP_RR;

rtcpPacket->header.count = 1;

rtcpPacket->header.lenN = htons(wordLen-1);

mRtpSource.updateRtcpStats();

Debug( 5, "Ssrc = %d", mRtspThread.getSsrc() );

Debug( 5, "Ssrc_1 = %d", mRtpSource.getSsrc() );

Debug( 5, "Last Seq = %d", mRtpSource.getMaxSeq() );

Debug( 5, "Jitter = %d", mRtpSource.getJitter() );

Debug( 5, "Last SR = %d", mRtpSource.getLastSrTimestamp() );

rtcpPacket->body.rr.ssrcN = htonl(mRtspThread.getSsrc());

rtcpPacket->body.rr.rr[0].ssrcN = htonl(mRtpSource.getSsrc());

rtcpPacket->body.rr.rr[0].lost = mRtpSource.getLostPackets();

rtcpPacket->body.rr.rr[0].fraction = mRtpSource.getLostFraction();

rtcpPacket->body.rr.rr[0].lastSeqN = htonl(mRtpSource.getMaxSeq());

rtcpPacket->body.rr.rr[0].jitterN = htonl(mRtpSource.getJitter());

rtcpPacket->body.rr.rr[0].lsrN = htonl(mRtpSource.getLastSrTimestamp());

rtcpPacket->body.rr.rr[0].dlsrN = 0;

return( wordLen*sizeof(uint32_t) );

}

int RtpCtrlThread::generateSdes( const unsigned char *packet, ssize_t packetLen )

{

RtcpPacket *rtcpPacket = (RtcpPacket *)packet;

const std::string &cname = mRtpSource.getCname();

int byteLen = sizeof(rtcpPacket->header)+sizeof(rtcpPacket->body.sdes)+sizeof(rtcpPacket->body.sdes.item[0])+cname.size();

int wordLen = ((byteLen-1)/sizeof(uint32_t))+1;

rtcpPacket->header.version = RTP_VERSION;

rtcpPacket->header.p = 0;

rtcpPacket->header.pt = RTCP_SDES;

rtcpPacket->header.count = 1;

rtcpPacket->header.lenN = htons(wordLen-1);

rtcpPacket->body.sdes.srcN = htonl(mRtpSource.getSsrc());

rtcpPacket->body.sdes.item[0].type = RTCP_SDES_CNAME;

rtcpPacket->body.sdes.item[0].len = cname.size();

memcpy( rtcpPacket->body.sdes.item[0].data, cname.data(), cname.size() );

return( wordLen*sizeof(uint32_t) );

}

int RtpCtrlThread::generateBye( const unsigned char *packet, ssize_t packetLen )

{

RtcpPacket *rtcpPacket = (RtcpPacket *)packet;

int byteLen = sizeof(rtcpPacket->header)+sizeof(rtcpPacket->body.bye)+sizeof(rtcpPacket->body.bye.srcN[0]);

int wordLen = ((byteLen-1)/sizeof(uint32_t))+1;

rtcpPacket->header.version = RTP_VERSION;

rtcpPacket->header.p = 0;

rtcpPacket->header.pt = RTCP_BYE;

rtcpPacket->header.count = 1;

rtcpPacket->header.lenN = htons(wordLen-1);

rtcpPacket->body.bye.srcN[0] = htonl(mRtpSource.getSsrc());

return( wordLen*sizeof(uint32_t) );

}

int RtpCtrlThread::recvPackets( unsigned char *buffer, ssize_t nBytes )

{

unsigned char *bufferPtr = buffer;

// u_int32 len; /* length of compound RTCP packet in words */

// rtcp_t *r; /* RTCP header */

// rtcp_t *end; /* end of compound RTCP packet */

// if ((*(u_int16 *)r & RTCP_VALID_MASK) != RTCP_VALID_VALUE) {

// /* something wrong with packet format */

// }

// end = (rtcp_t *)((u_int32 *)r + len);

// do r = (rtcp_t *)((u_int32 *)r + r->common.length + 1);

// while (r < end && r->common.version == 2);

// if (r != end) {

// /* something wrong with packet format */

// }

while ( nBytes > 0 )

{

int consumed = recvPacket( bufferPtr, nBytes );

if ( consumed <= 0 )

break;

bufferPtr += consumed;

nBytes -= consumed;

}

return( nBytes );

}

int RtpCtrlThread::run()

{

Debug( 2, "Starting control thread %x on port %d", mRtpSource.getSsrc(), mRtpSource.getLocalCtrlPort() );

SockAddrInet localAddr, remoteAddr;

bool sendReports;

UdpInetSocket rtpCtrlServer;

if ( mRtpSource.getLocalHost() != "" )

{

localAddr.resolve( mRtpSource.getLocalHost().c_str(), mRtpSource.getLocalCtrlPort(), "udp" );

if ( !rtpCtrlServer.bind( localAddr ) )

Fatal( "Failed to bind RTCP server" );

sendReports = false;

Debug( 3, "Bound to %s:%d", mRtpSource.getLocalHost().c_str(), mRtpSource.getLocalCtrlPort() );

}

else

{

localAddr.resolve( mRtpSource.getLocalCtrlPort(), "udp" );

if ( !rtpCtrlServer.bind( localAddr ) )

Fatal( "Failed to bind RTCP server" );

Debug( 3, "Bound to %s:%d", mRtpSource.getLocalHost().c_str(), mRtpSource.getLocalCtrlPort() );

remoteAddr.resolve( mRtpSource.getRemoteHost().c_str(), mRtpSource.getRemoteCtrlPort(), "udp" );

if ( !rtpCtrlServer.connect( remoteAddr ) )

Fatal( "Failed to connect RTCP server" );

Debug( 3, "Connected to %s:%d", mRtpSource.getRemoteHost().c_str(), mRtpSource.getRemoteCtrlPort() );

sendReports = true;

}

Select select( 10 );

select.addReader( &rtpCtrlServer );

unsigned char buffer[ZM_NETWORK_BUFSIZ];

while ( !mStop && select.wait() >= 0 )

{

if ( mStop )

break;

Select::CommsList readable = select.getReadable();

if ( readable.size() == 0 )

{

Error( "RTCP timed out" );

break;

}

for ( Select::CommsList::iterator iter = readable.begin(); iter != readable.end(); iter++ )

{

if ( UdpInetSocket *socket = dynamic_cast<UdpInetSocket *>(*iter) )

{

ssize_t nBytes = socket->recv( buffer, sizeof(buffer) );

Debug( 4, "Read %zd bytes on sd %d", nBytes, socket->getReadDesc() );

if ( nBytes )

{

recvPackets( buffer, nBytes );

if ( sendReports )

{

unsigned char *bufferPtr = buffer;

bufferPtr += generateRr( bufferPtr, sizeof(buffer)-(bufferPtr-buffer) );

bufferPtr += generateSdes( bufferPtr, sizeof(buffer)-(bufferPtr-buffer) );

Debug( 4, "Sending %zd bytes on sd %d", bufferPtr-buffer, rtpCtrlServer.getWriteDesc() );

if ( (nBytes = rtpCtrlServer.send( buffer, bufferPtr-buffer )) < 0 )

Error( "Unable to send: %s", strerror( errno ) );

//Debug( 4, "Sent %d bytes on sd %d", nBytes, rtpCtrlServer.getWriteDesc() );

}

else

{

mStop = true;

break;

}

else

{

Panic( "Barfed" );

}

rtpCtrlServer.close();

mRtspThread.stop();

return( 0 );

}

#endif // HAVE_LIBAVFORMAT

ZoneMinder/src/zm_rtp_ctrl.cpp at master · bountysource-support/ZoneMinder · GitHub

Expand file tree

Breadcrumbs

zm_rtp_ctrl.cpp

Latest commit

History

Breadcrumbs

zm_rtp_ctrl.cpp

File metadata and controls