lib/dvb/demux.cpp

   1 #include <config.h>
   2 #include <stdio.h>
   3 #include <fcntl.h>
   4 #include <sys/ioctl.h>
   5 #include <errno.h>
   6 #include <unistd.h>
   7 #include <signal.h>
   8
   9
  10 #if HAVE_DVB_API_VERSION < 3
  11 #include <ost/dmx.h>
  12 #ifndef DMX_SET_NEGFILTER_MASK
  13         #define DMX_SET_NEGFILTER_MASK   _IOW('o',48,uint8_t *)
  14 #endif
  15 #else
  16 #include <linux/dvb/dmx.h>
  17 #endif
  18
  19 #include "crc32.h"
  20
  21 #include <lib/base/eerror.h>
  22 #include <lib/base/filepush.h>
  23 #include <lib/dvb/idvb.h>
  24 #include <lib/dvb/demux.h>
  25 #include <lib/dvb/esection.h>
  26 #include <lib/dvb/decoder.h>
  27
  28 eDVBDemux::eDVBDemux(int adapter, int demux): adapter(adapter), demux(demux)
  29 {
  30         m_dvr_busy = 0;
  31 }
  32
  33 eDVBDemux::~eDVBDemux()
  34 {
  35 }
  36
  37 DEFINE_REF(eDVBDemux)
  38
  39 RESULT eDVBDemux::createSectionReader(eMainloop *context, ePtr<iDVBSectionReader> &reader)
  40 {
  41         RESULT res;
  42         reader = new eDVBSectionReader(this, context, res);
  43         if (res)
  44                 reader = 0;
  45         return res;
  46 }
  47
  48 RESULT eDVBDemux::createTSRecorder(ePtr<iDVBTSRecorder> &recorder)
  49 {
  50         if (m_dvr_busy)
  51                 return -EBUSY;
  52         recorder = new eDVBTSRecorder(this);
  53         return 0;
  54 }
  55
  56 RESULT eDVBDemux::getMPEGDecoder(ePtr<iTSMPEGDecoder> &decoder)
  57 {
  58         decoder = new eTSMPEGDecoder(this, 0);
  59         return 0;
  60 }
  61
  62 RESULT eDVBDemux::getSTC(pts_t &pts)
  63 {
  64         char filename[128];
  65 #if HAVE_DVB_API_VERSION < 3
  66         sprintf(filename, "/dev/dvb/card%d/demux%d", adapter, demux);
  67 #else
  68         sprintf(filename, "/dev/dvb/adapter%d/demux%d", adapter, demux);
  69 #endif
  70         int fd = ::open(filename, O_RDWR);
  71
  72         if (fd < 0)
  73                 return -ENODEV;
  74
  75         struct dmx_stc stc;
  76         stc.num = 0;
  77         stc.base = 1;
  78
  79         if (ioctl(fd, DMX_GET_STC, &stc) < 0)
  80         {
  81                 ::close(fd);
  82                 return -1;
  83         }
  84
  85         pts = stc.stc;
  86
  87         ::close(fd);
  88         return 0;
  89 }
  90
  91 RESULT eDVBDemux::flush()
  92 {
  93         // FIXME: implement flushing the PVR queue here.
  94
  95         m_event(evtFlush);
  96         return 0;
  97 }
  98
  99 RESULT eDVBDemux::connectEvent(const Slot1<void,int> &event, ePtr<eConnection> &conn)
 100 {
 101         conn = new eConnection(this, m_event.connect(event));
 102         return 0;
 103 }
 104
 105 void eDVBSectionReader::data(int)
 106 {
 107         __u8 data[4096]; // max. section size
 108         int r;
 109         r = ::read(fd, data, 4096);
 110         if(r < 0)
 111         {
 112                 eWarning("ERROR reading section - %m\n");
 113                 return;
 114         }
 115         if (checkcrc)
 116         {
 117                         // this check should never happen unless the driver is crappy!
 118                 unsigned int c;
 119                 if ((c = crc32((unsigned)-1, data, r)))
 120                 {
 121                         eDebug("crc32 failed! is %x\n", c);
 122                         return;
 123                 }
 124         }
 125         if (active)
 126                 read(data);
 127         else
 128                 eDebug("data.. but not active");
 129 }
 130
 131 eDVBSectionReader::eDVBSectionReader(eDVBDemux *demux, eMainloop *context, RESULT &res): demux(demux)
 132 {
 133         char filename[128];
 134 #if HAVE_DVB_API_VERSION < 3
 135         sprintf(filename, "/dev/dvb/card%d/demux%d", demux->adapter, demux->demux);
 136 #else
 137         sprintf(filename, "/dev/dvb/adapter%d/demux%d", demux->adapter, demux->demux);
 138 #endif
 139         fd = ::open(filename, O_RDWR);
 140
 141         eDebug("eDVBSectionReader has fd %d", fd);
 142
 143         if (fd >= 0)
 144         {
 145                 notifier=new eSocketNotifier(context, fd, eSocketNotifier::Read, false);
 146                 CONNECT(notifier->activated, eDVBSectionReader::data);
 147                 res = 0;
 148         } else
 149         {
 150                 perror(filename);
 151                 res = errno;
 152         }
 153 }
 154
 155 DEFINE_REF(eDVBSectionReader)
 156
 157 eDVBSectionReader::~eDVBSectionReader()
 158 {
 159         if (notifier)
 160                 delete notifier;
 161         if (fd >= 0)
 162                 ::close(fd);
 163 }
 164
 165 RESULT eDVBSectionReader::start(const eDVBSectionFilterMask &mask)
 166 {
 167         RESULT res;
 168         if (fd < 0)
 169                 return -ENODEV;
 170
 171         notifier->start();
 172 #if HAVE_DVB_API_VERSION < 3
 173         dmxSctFilterParams sct;
 174 #else
 175         dmx_sct_filter_params sct;
 176 #endif
 177         sct.pid     = mask.pid;
 178         sct.timeout = 0;
 179 #if HAVE_DVB_API_VERSION < 3
 180         sct.flags   = 0;
 181 #else
 182         sct.flags   = DMX_IMMEDIATE_START;
 183 #endif
 184         if (mask.flags & eDVBSectionFilterMask::rfCRC)
 185         {
 186                 sct.flags |= DMX_CHECK_CRC;
 187                 checkcrc = 1;
 188         } else
 189                 checkcrc = 0;
 190
 191         memcpy(sct.filter.filter, mask.data, DMX_FILTER_SIZE);
 192         memcpy(sct.filter.mask, mask.mask, DMX_FILTER_SIZE);
 193 #if HAVE_DVB_API_VERSION >= 3
 194         memcpy(sct.filter.mode, mask.mode, DMX_FILTER_SIZE);
 195 #endif
 196
 197         res = ::ioctl(fd, DMX_SET_FILTER, &sct);
 198         if (!res)
 199         {
 200 #if HAVE_DVB_API_VERSION < 3
 201                 res = ::ioctl(fd, DMX_SET_NEGFILTER_MASK, mask.mode);
 202                 if (!res)
 203                 {
 204                         res = ::ioctl(fd, DMX_START, 0);
 205                         if (!res)
 206                                 active = 1;
 207                 }
 208 #else
 209                 active = 1;
 210 #endif
 211         }
 212         return res;
 213 }
 214
 215 RESULT eDVBSectionReader::stop()
 216 {
 217         if (!active)
 218                 return -1;
 219
 220         active=0;
 221         ::ioctl(fd, DMX_STOP);
 222         notifier->stop();
 223
 224         return 0;
 225 }
 226
 227 RESULT eDVBSectionReader::connectRead(const Slot1<void,const __u8*> &r, ePtr<eConnection> &conn)
 228 {
 229         conn = new eConnection(this, read.connect(r));
 230         return 0;
 231 }
 232
 233 DEFINE_REF(eDVBTSRecorder);
 234
 235 eDVBTSRecorder::eDVBTSRecorder(eDVBDemux *demux): m_demux(demux)
 236 {
 237         m_running = 0;
 238         m_format = 0;
 239         m_target_fd = -1;
 240         m_thread = new eFilePushThread();
 241         m_demux->m_dvr_busy = 1;
 242 }
 243
 244 eDVBTSRecorder::~eDVBTSRecorder()
 245 {
 246         stop();
 247         delete m_thread;
 248         m_demux->m_dvr_busy = 0;
 249 }
 250
 251 RESULT eDVBTSRecorder::start()
 252 {
 253         if (m_running)
 254                 return -1;
 255
 256         if (m_target_fd == -1)
 257                 return -2;
 258
 259         char filename[128];
 260 #if HAVE_DVB_API_VERSION < 3
 261         snprintf(filename, 128, "/dev/dvb/card%d/dvr%d", m_demux->adapter, m_demux->demux);
 262 #else
 263         snprintf(filename, 128, "/dev/dvb/adapter%d/dvr%d", m_demux->adapter, m_demux->demux);
 264 #endif
 265         m_source_fd = ::open(filename, O_RDONLY);
 266
 267         if (m_source_fd < 0)
 268         {
 269                 eDebug("FAILED to open dvr (%s) in ts recoder (%m)", filename);
 270                 return -3;
 271         }
 272
 273         m_thread->start(m_source_fd, m_target_fd);
 274         m_running = 1;
 275
 276         for (std::map<int,int>::iterator i(m_pids.begin()); i != m_pids.end(); ++i)
 277                 startPID(i->first);
 278
 279         return 0;
 280 }
 281
 282 RESULT eDVBTSRecorder::addPID(int pid)
 283 {
 284         if (m_pids.find(pid) != m_pids.end())
 285                 return -1;
 286
 287         m_pids.insert(std::pair<int,int>(pid, -1));
 288         if (m_running)
 289                 startPID(pid);
 290         return 0;
 291 }
 292
 293 RESULT eDVBTSRecorder::removePID(int pid)
 294 {
 295         if (m_pids.find(pid) == m_pids.end())
 296                 return -1;
 297
 298         if (m_running)
 299                 stopPID(pid);
 300
 301         m_pids.erase(pid);
 302         return 0;
 303 }
 304
 305 RESULT eDVBTSRecorder::setFormat(int format)
 306 {
 307         if (m_running)
 308                 return -1;
 309         m_format = format;
 310         return 0;
 311 }
 312
 313 RESULT eDVBTSRecorder::setTargetFD(int fd)
 314 {
 315         m_target_fd = fd;
 316         return 0;
 317 }
 318
 319 RESULT eDVBTSRecorder::setBoundary(off_t max)
 320 {
 321         return -1; // not yet implemented
 322 }
 323
 324 RESULT eDVBTSRecorder::stop()
 325 {
 326         for (std::map<int,int>::iterator i(m_pids.begin()); i != m_pids.end(); ++i)
 327                 stopPID(i->first);
 328
 329         if (!m_running)
 330                 return -1;
 331         m_thread->stop();
 332
 333         close(m_source_fd);
 334
 335         return 0;
 336 }
 337
 338 RESULT eDVBTSRecorder::connectEvent(const Slot1<void,int> &event, ePtr<eConnection> &conn)
 339 {
 340         conn = new eConnection(this, m_event.connect(event));
 341         return 0;
 342 }
 343
 344 RESULT eDVBTSRecorder::startPID(int pid)
 345 {
 346         char filename[128];
 347 #if HAVE_DVB_API_VERSION < 3
 348         snprintf(filename, 128, "/dev/dvb/card%d/demux%d", m_demux->adapter, m_demux->demux);
 349 #else
 350         snprintf(filename, 128, "/dev/dvb/adapter%d/demux%d", m_demux->adapter, m_demux->demux);
 351 #endif
 352         int fd = ::open(filename, O_RDWR);
 353         if (fd < 0)
 354         {
 355                 eDebug("FAILED to open demux (%s) in ts recoder (%m)", filename);
 356                 return -1;
 357         }
 358
 359 #if HAVE_DVB_API_VERSION < 3
 360         dmxPesFilterParams flt;
 361
 362         flt.pesType = DMX_PES_OTHER;
 363 #else
 364         dmx_pes_filter_params flt;
 365
 366         flt.pes_type = DMX_PES_OTHER;
 367 #endif
 368
 369         flt.pid     = pid;
 370         flt.input   = DMX_IN_FRONTEND;
 371         flt.output  = DMX_OUT_TS_TAP;
 372
 373         flt.flags   = DMX_IMMEDIATE_START;
 374
 375         int res = ::ioctl(fd, DMX_SET_PES_FILTER, &flt);
 376         if (res < 0)
 377         {
 378                 eDebug("set pes filter failed!");
 379                 ::close(fd);
 380                 return -1;
 381         }
 382         m_pids[pid] = fd;
 383
 384         return 0;
 385 }
 386
 387 void eDVBTSRecorder::stopPID(int pid)
 388 {
 389         ::close(m_pids[pid]);
 390         m_pids[pid] = -1;
 391 }