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Diffstat (limited to 'responselive.c')
| -rw-r--r-- | responselive.c | 525 |
1 files changed, 525 insertions, 0 deletions
diff --git a/responselive.c b/responselive.c new file mode 100644 index 0000000..567c6bb --- /dev/null +++ b/responselive.c @@ -0,0 +1,525 @@ +/* + * responselive.c: VDR on Smart TV plugin + * + * Copyright (C) 2013 T. Lohmar + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html + * + */ +/* + * + * TODO: Stop, when the channel is unavailable + * +*/ +#include "responselive.h" +#include "httpresource.h" +#include "smarttvfactory.h" +#include "log.h" + +#include <vdr/remux.h> + +#include <vector> +#include <sys/stat.h> + +#define DEBUGPREFIX "mReqId= " << mRequest->mReqId << " fd= " << mRequest->mFd +#define OKAY 0 +#define ERROR (-1) +#define DEBUG + + +cLiveRelay::cLiveRelay(cChannel* channel, cDevice* device, string chan_id, int req_id, cHttpResource* req) : cReceiver(channel, 0), + mChannelId(chan_id), mRingBuffer(), mReqId(req_id), mRequest(req), mNotifFd(0), mNotifRequired(true) +{ + + mLog = Log::getInstance(); + + pthread_mutex_init(&processedRingLock, NULL); + + mNotifFd = mRequest->mFactory->openPipe(); + if (mNotifFd == 0) { + *(mLog->log()) << "mReqId= " << mReqId + << " cLiveRelay::cLiveRelay - Constructor ERROR, mNotifId is ZERO" << endl; + } + + SetPids(channel); + + // AddPid(channel->Tpid()); + // AddPid(channel->Vpid()); + // AddPid(channel->Apid(0)); + + device->SwitchChannel(channel, false); + device->AttachReceiver(this); + + // mRingBuffer = new cRingBufferLinear(60000*188, MIN_TS_PACKETS_FOR_FRAME_DETECTOR * TS_SIZE, true, "responselive"); + mRingBuffer = new cRingBufferLinear(60000*188); + mRingBuffer->SetTimeouts(0, 100); + +#ifndef DEBUG + *(mLog->log()) << "mReqId= " << mReqId << " cLiveRelay::cLiveRelay created for chan_id= " << chan_id << endl; +#endif +}; + +cLiveRelay::~cLiveRelay() { + close(mNotifFd); + cReceiver::Detach(); + delete mRingBuffer; +}; + +void cLiveRelay::Activate(bool On) { + // this method is called by vdr + if (On) { + // Start(); + *(Log::getInstance()->log()) << "mReqId= " << mReqId + << " cLiveRelay::Activate called by VDR for chan_id= " << mChannelId <<endl; + } + else { + // Cancel(); + *(Log::getInstance()->log()) << "mReqId= " << mReqId + << " cLiveRelay::Deactivate for chan_id= " << mChannelId <<endl; + } +} + +void cLiveRelay::detachLiveRelay() { + Detach(); +} + +void cLiveRelay::Receive(uchar* data, int length) { + + if (length != 188) { + *(Log::getInstance()->log()) << "ERROR: ******* ts packet unequal 188 Byte Length= " << length << endl; + } + if (data[0] != 0x47) { + *(Log::getInstance()->log()) << "ERROR: ******* Out of Sync " << endl; + } + + pthread_mutex_lock(&processedRingLock); + int p = mRingBuffer->Put(data, length); + pthread_mutex_unlock(&processedRingLock); + if (p != length ) { + *(Log::getInstance()->log()) << "cLiveRelay::Receive: Overflow" << endl; + mRingBuffer->ReportOverflow(length - p); + } + + if (mNotifRequired ) { + // *(Log::getInstance()->log()) << "cLiveRelay::Receive: Sending Notification" << endl; + mRequest->mFactory->setWriteFlag(mRequest->mFd); + mNotifRequired = false; + ssize_t res = write (mNotifFd, " ", 1); + if (res <= 0) + *(Log::getInstance()->log()) << "cLiveRelay::Receive: Notification NOT sent" << endl; + } + +} + + +//---------------------------------------------- +//---------------------------------------------- +//---------------------------------------------- + +cResponseLive::cResponseLive(cHttpResource* req, string chan_id) : cResponseBase(req), mChannelId(chan_id), + mPatPmtGen(NULL), mInStartPhase(true), mFrameDetector(NULL), mVpid(0), mVtype(0), mPpid(0), mStartThreshold(75*188) { + + mStartThreshold= mRequest->mFactory->getConfig()->getBuiltInLivePktBuf4Sd() * 188; + *(mLog->log()) << DEBUGPREFIX << " cResponseLive::cResponseLive - Constructor" << endl; + + if (InitRelay(chan_id)) { + mRelay->setNotifRequired(); + mRequest->mFactory->clrWriteFlag(mRequest->mFd); + } + + if (mRelay != NULL) { + sendHeaders(200, "OK", NULL, "video/mpeg", -1, -1); + } + else { + sendError(404, "Not Found.", NULL, "004 Resource Busy"); + } +} + +cResponseLive::~cResponseLive() { + if (mRelay != NULL) + delete mRelay; + if (mPatPmtGen != NULL) + delete mPatPmtGen; + + if (mFrameDetector != NULL) + delete mFrameDetector; +} + +bool cResponseLive::InitRelay(string channel_id) { + + cChannel * channel = Channels.GetByChannelID(tChannelID::FromString(channel_id.c_str())); + + int priority = 99; + if (!channel ){ + *(mLog->log()) << DEBUGPREFIX + << " " << channel_id << " No channel found: " << endl; + return false; + } + + char buf [40]; + snprintf(buf, 40, "%s", *(channel->GetChannelID()).ToString()); + + if (channel->Vpid() != 0) { + mVpid = channel->Vpid(); + mVtype = channel->Vtype(); + mPpid = channel->Ppid(); + + if (mVtype == 27) { + // mStartThreshold = 150 * 188; + mStartThreshold= mRequest->mFactory->getConfig()->getBuiltInLivePktBuf4Hd() * 188; + + *(mLog->log()) << DEBUGPREFIX << " cResponseLive::InitRelay H.264 detected. mStartThreshold is " << mStartThreshold << endl; + } + + mFrameDetector = new cFrameDetector(channel->Vpid(), channel->Vtype()); + mInStartPhase = true; + } + else { + mInStartPhase = false; + } + + *(mLog->log()) << DEBUGPREFIX << " cResponseLive::InitRelay channel " << buf << " found" << endl; +#ifndef DEBUG + *(mLog->log()) << DEBUGPREFIX << " vpid= " << channel->Vpid() << " vtype= " << channel->Vtype() << endl; + + for (int n = 0; channel->Apid(n); n++) { + *(mLog->log()) << DEBUGPREFIX << " apid= " << channel->Apid(n) << " atype= " << channel->Atype(n) + << " lang= " << channel->Alang(n) << endl; + } + for (int n = 0; channel->Dpid(n); n++) { + *(mLog->log()) << DEBUGPREFIX << " dpid= " << channel->Dpid(n) << " dtype= " << channel->Dtype(n) << endl; + } + for (int n = 0; channel->Spid(n); n++) { + *(mLog->log()) << DEBUGPREFIX << " spid= " << channel->Spid(n) << " stype= " << channel->SubtitlingType(n) + << " lang= " << channel->Slang(n) << endl; + } +#endif + + cDevice* device = cDevice::GetDevice(channel, priority, true); // last param is live-view + + if (!device) { + *(mLog->log()) << DEBUGPREFIX << " cLiveRelay::create: No device found to receive this channel at this priority. chan_id= " + << channel_id << endl; + + return false; + } + + mRelay = new cLiveRelay(channel, device, channel_id, mRequest->mReqId, mRequest); + + mPatPmtGen = new cPatPmtGenerator(channel); + + return true; +} + +void cResponseLive::WritePatPmt() { + mBlkPos = 0; + mBlkLen = 0; + + uchar* ptr = mPatPmtGen->GetPat(); + memcpy(mBlkData, ptr, 188); + mBlkLen = 188; + + int idx = 0; + while ((ptr = mPatPmtGen->GetPmt(idx)) != NULL) { + memcpy(mBlkData+mBlkLen, ptr, 188); + mBlkLen += 188; + }; +} + +int cResponseLive::fillDataBlk() { + switch (mRequest->mFactory->getConfig()->getBuiltInLiveStartMode()){ + case 0: + return fillDataBlk_straight(); + break; + case 1: + return fillDataBlk_pcr(); + break; + case 2: + return fillDataBlk_iframe(); + break; + }; +} + +int cResponseLive::fillDataBlk_pcr() { + mBlkPos = 0; + mBlkLen = 0; + + if (mError) + return ERROR; + + int threshold = (mInStartPhase) ? mStartThreshold : (1*188); + + if (mRelay->mRingBuffer->Available() >= threshold) { + + pthread_mutex_lock(&(mRelay->processedRingLock)); + int r; + char *b = (char*)mRelay->mRingBuffer->Get(r); + + if (b != NULL) { + // mInStartPhase = false; + + if ((r % 188) != 0) { + *(mLog->log()) << DEBUGPREFIX << " ERROR: r= " << r << " %188 = " << (r%188) << endl; + } + + if (mInStartPhase) { + int offset = 0; + bool already_deleted = false; + while ((offset +188) <= r) { + + if (TsPid((const uchar*) (b+offset)) == mPpid){ + int64_t pcr = TsGetPcr((const uchar*) (b+offset)); + if (pcr != -1) { + // pcr pkt found + if ((r - (offset+188)) < threshold) { + already_deleted = true; + mRelay->mRingBuffer->Del(offset + 188); + break; + } + *(mLog->log()) << DEBUGPREFIX + << " cResponseLive::fillDataBlk() - PCR found, starting now pcr= " + << pcr << endl; + + // fill the memblock + mInStartPhase = false; + WritePatPmt(); + int len = ((r - offset ) > (MAXLEN - mBlkLen)) ? (MAXLEN - mBlkLen): (r - offset ); + + if ((r - offset ) > (MAXLEN - mBlkLen)) { + *(mLog->log()) << DEBUGPREFIX + << " cResponseLive::fillDataBlk() mInStartPhase = true - ((r - offset ) > (MAXLEN - mBlkLen))" + << endl; + } + memcpy(mBlkData + mBlkLen, b+offset, len); + + mBlkLen += len; + already_deleted = true; + mRelay->mRingBuffer->Del(len + offset); + break; + } // if (pcr != 0) + } // if (TsPid(( + + // end of find pcr + + offset += 188; + } // while (offset < r) { + + if (!already_deleted) { + *(mLog->log()) << DEBUGPREFIX << " cResponseLive::fillDataBlk() - Not sufficient data. Deleting " + << offset +188 << " Byte corresponding to " << (offset / 188) +1 << " pkts" << endl; + mRelay->mRingBuffer->Del(offset + 188); + } + } // if (mInStartPhase) + + else { + + WritePatPmt(); + int len = (r > (MAXLEN - mBlkLen)) ? (MAXLEN - mBlkLen): r; + + if (r > (MAXLEN - mBlkLen)) { + *(mLog->log()) << DEBUGPREFIX + << " cResponseLive::fillDataBlk() mInStartPhase = false - ((r - offset ) > (MAXLEN - mBlkLen)) len= " << len + << " MAXLEN= " << MAXLEN + << " mBlkLen= " << mBlkLen + << endl; + } + memcpy(mBlkData + mBlkLen, b, len); + + mBlkLen += len; + mRelay->mRingBuffer->Del(len); + } // else + } // if (b != NULL) + else { + *(mLog->log()) << DEBUGPREFIX << " WARNING - cResponseLive::fillDataBlk() - b== NULL" << endl; + } + pthread_mutex_unlock(&(mRelay->processedRingLock)); + } + else { + mRequest->mFactory->clrWriteFlag(mRequest->mFd); + mRelay->setNotifRequired(); + } + + return OKAY; +} + +int cResponseLive::fillDataBlk_iframe() { + mBlkPos = 0; + mBlkLen = 0; + + if (mError) + return ERROR; + + int threshold = (mInStartPhase) ? mStartThreshold : (10*188); + + if (mRelay->mRingBuffer->Available() >= threshold) { + + pthread_mutex_lock(&(mRelay->processedRingLock)); + int r; + char *b = (char*)mRelay->mRingBuffer->Get(r); + + if (b != NULL) { + // mInStartPhase = false; + + if ((r % 188) != 0) { + *(mLog->log()) << DEBUGPREFIX << " ERROR: r= " << r << " %188 = " << (r%188) << endl; + } + + if (mInStartPhase) { + int offset = 0; + bool already_deleted = false; + cFrameDetector frame_detector(mVpid, mVtype); + + while ((offset +188) <= r) { + + if (TsPid((const uchar*) (b+offset)) == mVpid){ + // check payload unit start ind + if (!TsPayloadStart((const uchar*) (b+offset))) { + offset += 188; + continue; + } + + //ok. point to frame start now. check whether i frame + if (frame_detector.Analyze((const uchar*) (b+offset), (r - offset) ) == 0) { + // not sufficient data. delete and return + already_deleted = true; + mRelay->mRingBuffer->Del(offset + 188); + break; + } + if (frame_detector.IndependentFrame()) { + // was an I-Frame + if ((r - (offset +188)) < threshold) { + *(mLog->log()) << DEBUGPREFIX + << " IFrame found, but not sufficient data to start. " << endl; + already_deleted = true; + mRelay->mRingBuffer->Del(offset); + break; + } + + *(mLog->log()) << DEBUGPREFIX + << " IFrame found, starting now " << endl; + mInStartPhase = false; + WritePatPmt(); + int len = ((r - offset ) > (MAXLEN - mBlkLen)) ? (MAXLEN - mBlkLen): (r - offset ); + if ((r - offset ) > (MAXLEN - mBlkLen)) { + *(mLog->log()) << DEBUGPREFIX + << " cResponseLive::fillDataBlk_iframe() mInStartPhase = true - ((r - offset ) > (MAXLEN - mBlkLen))" + << endl; + } + memcpy(mBlkData + mBlkLen, b+offset, len); + + mBlkLen += len; + already_deleted = true; + mRelay->mRingBuffer->Del(len + offset); + break; + } + + } // if (TsPid(( + + offset += 188; + } // while (offset < r) { + + if (!already_deleted) { + *(mLog->log()) << DEBUGPREFIX << " cResponseLive::fillDataBlk() - Not sufficient data. Deleting " + << offset << " Byte" << endl; + mRelay->mRingBuffer->Del(offset + 188); + } + } // if (mInStartPhase) + + else { + + WritePatPmt(); + int len = (r > (MAXLEN - mBlkLen)) ? (MAXLEN - mBlkLen): r; + + if (r > (MAXLEN - mBlkLen)) { + *(mLog->log()) << DEBUGPREFIX + << " cResponseLive::fillDataBlk() mInStartPhase = false - ((r - offset ) > (MAXLEN - mBlkLen)) len= " << len + << " MAXLEN= " << MAXLEN + << " mBlkLen= " << mBlkLen + << endl; + } + memcpy(mBlkData + mBlkLen, b, len); + + mBlkLen += len; + mRelay->mRingBuffer->Del(len); + } // else + } // if (b != NULL) + else { + *(mLog->log()) << DEBUGPREFIX << " WARNING - cResponseLive::fillDataBlk() - b== NULL" << endl; + } + pthread_mutex_unlock(&(mRelay->processedRingLock)); + } + else { + mRequest->mFactory->clrWriteFlag(mRequest->mFd); + mRelay->setNotifRequired(); + } + + return OKAY; +} + + +int cResponseLive::fillDataBlk_straight() { + mBlkPos = 0; + mBlkLen = 0; + + if (mError) + return ERROR; + + int threshold = (mInStartPhase) ? mStartThreshold : (10*188); + + if (mRelay->mRingBuffer->Available() >= threshold) { + + pthread_mutex_lock(&(mRelay->processedRingLock)); + int r; + char *b = (char*)mRelay->mRingBuffer->Get(r); + + if (b != NULL) { + mInStartPhase = false; + + if ((r % 188) != 0) { + *(mLog->log()) << DEBUGPREFIX + << " ERROR: r= " << r << " %188 = " << (r%188) << endl; + + } + + WritePatPmt(); + int len = (r > (MAXLEN - mBlkLen)) ? (MAXLEN - mBlkLen): r; + + if (r > (MAXLEN - mBlkLen)) { + *(mLog->log()) << DEBUGPREFIX + << " cResponseLive::fillDataBlk() mInStartPhase = false - ((r - offset ) > (MAXLEN - mBlkLen)) len= " << len + << " MAXLEN= " << MAXLEN + << " mBlkLen= " << mBlkLen + << endl; + } + memcpy(mBlkData + mBlkLen, b, len); + + mBlkLen += len; + mRelay->mRingBuffer->Del(len); + + + } // if (b != NULL) + else { + *(mLog->log()) << DEBUGPREFIX << " WARNING - cResponseLive::fillDataBlk() - b== NULL" << endl; + } + pthread_mutex_unlock(&(mRelay->processedRingLock)); + } + else { + mRequest->mFactory->clrWriteFlag(mRequest->mFd); + mRelay->setNotifRequired(); + } + + return OKAY; +} |