C++ Frame类代码示例

Frame * Decoder::decodeAudio2(Packet & packet) {
  LOGTRACEMETHOD("Decode Audio");
  LOGDEBUG(packet.toString());
  //        Frame frame;
  Frame * frame = new Frame();
  int size = packet.packet->size;
  int samples_size = 192000;//AVCODEC_MAX_AUDIO_FRAME_SIZE;
  int bps = av_get_bytes_per_sample(ctx->sample_fmt);
  //uint8_t* t=(uint8_t*)av_malloc(100);
  //uint8_t *outbuf = static_cast<uint8_t*> (av_malloc(samples_size));
  //int len = avcodec_decode_audio3(ctx, (short *) outbuf, &samples_size, packet.packet);
  int len = avcodec_decode_audio4(ctx, frame->getAVFrame(), &samples_size, packet.packet);

  //@TODO: this is a hack, because the decoder changes the TimeBase after the first packet was decoded
  if (_next_pts == AV_NOPTS_VALUE) {
#ifdef USE_TIME_BASE_Q
    _next_pts = av_rescale_q(packet.getPts(), packet.getTimeBase(), AV_TIME_BASE_Q);
#else
    _next_pts = av_rescale_q(packet.getPts(), packet.getTimeBase(), ctx->time_base);
#endif

    LOGDEBUG("setting last pts to " << _next_pts << " ctxtb=" << ctx->time_base.num << "/" << ctx->time_base.den
    << " ptb=" << packet.getTimeBase().num << "/" << packet.getTimeBase().den);
  }
  LOGDEBUG("DecodingLength:" << len << " PacketSize:" << packet.getSize() << "SampleSize:" << samples_size << "FrameSize:" << ctx->frame_size * ctx->channels);
  if (len < 0 /*||ctx->channels<=0||samples_size<=0*/) {
    LOGERROR("Error while decoding audio Frame");
    //av_free(outbuf);
    return new Frame();
  }
  //Frame * frame = new Frame(outbuf,samples_size);
  if (samples_size > 0) {
    frame->setFinished(true);
  } else {
    frame->setFinished(false);
  }
  size -= len;

  frame->_allocated = true;
  //frame->getAVFrame()->nb_samples=samples_size;
  //  frame._buffer = outbuf;
  frame->stream_index = packet.packet->stream_index;


  frame->setPts(_next_pts);
  //frame->setDts(_next_pts);
  AVRational ar;
  ar.num = 1;
  ar.den = ctx->sample_rate;
#ifdef USE_TIME_BASE_Q
  int64_t dur = av_rescale_q(samples_size, ar, AV_TIME_BASE_Q);
  frame->duration = dur;
  frame->setTimeBase(AV_TIME_BASE_Q);
#else
  //  int64_t dur = av_rescale_q(samples_size, packet.getTimeBase(), ar);
  //samples_size=max(1,samples_size);
  int64_t dur = ((int64_t) AV_TIME_BASE / bps * samples_size) / (ctx->sample_rate * ctx->channels);
  AVRational arbase;
  arbase.num = 1;
  arbase.den = AV_TIME_BASE;

  frame->duration = av_rescale_q(dur, arbase, ar);
  frame->setTimeBase(ar);

  //  _last_pts += frame->duration;
#endif
  _last_pts = _next_pts;
  _next_pts += frame->duration;
  frame->pos = packet.packet->pos;
  //  frame->duration = packet.packet->duration;
  /*
  frame->_size = samples_size;
  frame->_buffer=outbuf;
  */
  frame->_type = AVMEDIA_TYPE_AUDIO;
  frame->channels = ctx->channels;
  frame->sample_rate = ctx->sample_rate;
  //frame->dumpHex();
  LOGDEBUG(frame->toString());
  //  frame->dumpHex();
  pushFrame(new Frame(*frame));

  return frame;
}

bool EditorClientEfl::handleEditingKeyboardEvent(KeyboardEvent* event)
{
    Node* node = event->target()->toNode();
    ASSERT(node);
    Frame* frame = node->document().frame();
    ASSERT(frame);

    const PlatformKeyboardEvent* keyEvent = event->keyEvent();
    if (!keyEvent)
        return false;

    bool caretBrowsing = frame->settings().caretBrowsingEnabled();
    if (caretBrowsing) {
        switch (keyEvent->windowsVirtualKeyCode()) {
        case VK_LEFT:
            frame->selection().modify(keyEvent->shiftKey() ? FrameSelection::AlterationExtend : FrameSelection::AlterationMove,
                                       DirectionLeft,
                                       keyEvent->ctrlKey() ? WordGranularity : CharacterGranularity,
                                       UserTriggered);
            return true;
        case VK_RIGHT:
            frame->selection().modify(keyEvent->shiftKey() ? FrameSelection::AlterationExtend : FrameSelection::AlterationMove,
                                       DirectionRight,
                                       keyEvent->ctrlKey() ? WordGranularity : CharacterGranularity,
                                       UserTriggered);
            return true;
        case VK_UP:
            frame->selection().modify(keyEvent->shiftKey() ? FrameSelection::AlterationExtend : FrameSelection::AlterationMove,
                                       DirectionBackward,
                                       keyEvent->ctrlKey() ? ParagraphGranularity : LineGranularity,
                                       UserTriggered);
            return true;
        case VK_DOWN:
            frame->selection().modify(keyEvent->shiftKey() ? FrameSelection::AlterationExtend : FrameSelection::AlterationMove,
                                       DirectionForward,
                                       keyEvent->ctrlKey() ? ParagraphGranularity : LineGranularity,
                                       UserTriggered);
            return true;
        }
    }

    Editor::Command command = frame->editor().command(interpretKeyEvent(event));

    if (keyEvent->type() == PlatformEvent::RawKeyDown) {
        // WebKit doesn't have enough information about mode to decide how commands that just insert text if executed via Editor should be treated,
        // so we leave it upon WebCore to either handle them immediately (e.g. Tab that changes focus) or let a keypress event be generated
        // (e.g. Tab that inserts a Tab character, or Enter).
        return !command.isTextInsertion() && command.execute(event);
    }

    if (command.execute(event))
        return true;

    // Don't allow text insertion for nodes that cannot edit.
    if (!frame->editor().canEdit())
        return false;

    // Don't insert null or control characters as they can result in unexpected behaviour
    if (event->charCode() < ' ')
        return false;

    // Don't insert anything if a modifier is pressed
    if (keyEvent->ctrlKey() || keyEvent->altKey())
        return false;

    return frame->editor().insertText(event->keyEvent()->text(), event);
}

int Animation::nodeCount() const
{
    Frame *frame = m_frames.at(m_currentFrame);
    return frame->nodeCount();
}

static Frame* createWindow(Frame* openerFrame, Frame* lookupFrame, const FrameLoadRequest& request, const WindowFeatures& features, NavigationPolicy policy, ShouldSendReferrer shouldSendReferrer, bool& created)
{
    ASSERT(!features.dialog || request.frameName().isEmpty());

    if (!request.frameName().isEmpty() && request.frameName() != "_blank" && policy == NavigationPolicyIgnore) {
        if (Frame* frame = lookupFrame->loader().findFrameForNavigation(request.frameName(), openerFrame->document())) {
            if (request.frameName() != "_self")
                frame->page()->focusController().setFocusedFrame(frame);
            created = false;
            return frame;
        }
    }

    // Sandboxed frames cannot open new auxiliary browsing contexts.
    if (openerFrame->document()->isSandboxed(SandboxPopups)) {
        // FIXME: This message should be moved off the console once a solution to https://bugs.webkit.org/show_bug.cgi?id=103274 exists.
        openerFrame->document()->addConsoleMessage(SecurityMessageSource, ErrorMessageLevel, "Blocked opening '" + request.resourceRequest().url().elidedString() + "' in a new window because the request was made in a sandboxed frame whose 'allow-popups' permission is not set.");
        return 0;
    }

    if (openerFrame->settings() && !openerFrame->settings()->supportsMultipleWindows()) {
        created = false;
        return openerFrame->tree().top();
    }

    Page* oldPage = openerFrame->page();
    if (!oldPage)
        return 0;

    Page* page = oldPage->chrome().client().createWindow(openerFrame, request, features, policy, shouldSendReferrer);
    if (!page)
        return 0;

    Frame* frame = page->mainFrame();

    frame->loader().forceSandboxFlags(openerFrame->document()->sandboxFlags());

    if (request.frameName() != "_blank")
        frame->tree().setName(request.frameName());

    page->chrome().setWindowFeatures(features);

    // 'x' and 'y' specify the location of the window, while 'width' and 'height'
    // specify the size of the viewport. We can only resize the window, so adjust
    // for the difference between the window size and the viewport size.

    FloatRect windowRect = page->chrome().windowRect();
    FloatSize viewportSize = page->chrome().pageRect().size();

    if (features.xSet)
        windowRect.setX(features.x);
    if (features.ySet)
        windowRect.setY(features.y);
    if (features.widthSet)
        windowRect.setWidth(features.width + (windowRect.width() - viewportSize.width()));
    if (features.heightSet)
        windowRect.setHeight(features.height + (windowRect.height() - viewportSize.height()));

    // Ensure non-NaN values, minimum size as well as being within valid screen area.
    FloatRect newWindowRect = DOMWindow::adjustWindowRect(page, windowRect);

    page->chrome().setWindowRect(newWindowRect);
    page->chrome().show(policy);

    created = true;
    return frame;
}

// Traj_NcEnsemble::writeArray()
int Traj_NcEnsemble::writeArray(int set, FramePtrArray const& Farray) {
# ifdef HAS_PNETCDF
  MPI_Offset pstart_[4];
  MPI_Offset pcount_[4];
# define start_ pstart_
# define count_ pcount_
# endif
  start_[0] = ncframe_; // Frame
  start_[2] = 0;        // Atoms
  start_[3] = 0;        // XYZ
  count_[0] = 1; // Frame
  count_[1] = 1; // Ensemble
  count_[3] = 3; // XYZ
  for (int member = ensembleStart_; member != ensembleEnd_; member++) {
    //rprintf("DEBUG: Writing set %i, member %i\n", set+1, member); 
#   ifdef MPI
    Frame* frm = Farray[0];
#   else
    Frame* frm = Farray[member];
#   endif
    start_[1] = member;   // Ensemble
    count_[2] = Ncatom(); // Atoms
    // Write Coords
    //WriteIndices(); // DEBUG
    DoubleToFloat(Coord_, frm->xAddress());
#   ifdef HAS_PNETCDF
    if (ncmpi_put_vara_float_all(ncid_, coordVID_, start_, count_, Coord_))
#   else
    if (checkNCerr(nc_put_vara_float(ncid_, coordVID_, start_, count_, Coord_)))
#   endif
    {
      mprinterr("Error: Netcdf Writing coords frame %i\n", set+1);
      return 1;
    }
    // Write velocity.
    if (CoordInfo().HasVel() && frm->HasVelocity()) { // TODO: Determine V beforehand
      DoubleToFloat(Coord_, frm->vAddress());
#     ifdef HAS_PNETCDF
      if (ncmpi_put_vara_float_all(ncid_, velocityVID_, start_, count_, Coord_))
#     else
      if (checkNCerr(nc_put_vara_float(ncid_, velocityVID_, start_, count_, Coord_)) )
#     endif
      {
        mprinterr("Error: Netcdf writing velocity frame %i\n", set+1);
        return 1;
      }
    }
    // Write box
    if (cellLengthVID_ != -1) {
      count_[2] = 3;
#     ifdef HAS_PNETCDF
      if (ncmpi_put_vara_double_all(ncid_,cellLengthVID_,start_,count_,frm->bAddress()))
#     else
      if (checkNCerr(nc_put_vara_double(ncid_,cellLengthVID_,start_,count_,frm->bAddress())) )
#     endif
      {
        mprinterr("Error: Writing cell lengths frame %i.\n", set+1);
        return 1;
      }
#     ifdef HAS_PNETCDF
      if (ncmpi_put_vara_double_all(ncid_,cellAngleVID_,start_,count_,frm->bAddress()+3))
#     else
      if (checkNCerr(nc_put_vara_double(ncid_,cellAngleVID_,start_,count_,frm->bAddress()+3)))
#     endif
      {
        mprinterr("Error: Writing cell angles frame %i.\n", set+1);
        return 1;
      }
    }
    // Write temperature
    if (TempVID_!=-1) {
#     ifdef HAS_PNETCDF
      if (ncmpi_put_vara_double_all(ncid_,TempVID_,start_,count_,frm->tAddress()))
#     else
      if (checkNCerr(nc_put_vara_double(ncid_,TempVID_,start_,count_,frm->tAddress())))
#     endif
      {
        mprinterr("Error: Writing temperature frame %i.\n", set+1);
        return 1;
      }
    }
    // Write indices
    if (indicesVID_ != -1) {
      count_[2] = remd_dimension_;
#     ifdef HAS_PNETCDF
      if (ncmpi_put_vara_int_all(ncid_,indicesVID_,start_,count_,frm->iAddress()))
#     else
      if (checkNCerr(nc_put_vara_int(ncid_,indicesVID_,start_,count_,frm->iAddress())))
#     endif
      {
        mprinterr("Error: Writing indices frame %i.\n", set+1);
        return 1;
      }
    }
  }
# ifdef HAS_PNETCDF
  //ncmpi_sync(ncid_);
# else
  nc_sync(ncid_); // Necessary after every write??
//.........这里部分代码省略.........

void HTMLAppletElement::updateWidgetInternal()
{
    ASSERT(!m_isDelayingLoadEvent);
    setNeedsWidgetUpdate(false);
    // FIXME: This should ASSERT isFinishedParsingChildren() instead.
    if (!isFinishedParsingChildren())
        return;

    RenderEmbeddedObject* renderer = renderEmbeddedObject();

    Frame* frame = document().frame();
    ASSERT(frame);

    LayoutUnit contentWidth = renderer->style()->width().isFixed() ? LayoutUnit(renderer->style()->width().value()) :
        renderer->width() - renderer->borderAndPaddingWidth();
    LayoutUnit contentHeight = renderer->style()->height().isFixed() ? LayoutUnit(renderer->style()->height().value()) :
        renderer->height() - renderer->borderAndPaddingHeight();

    Vector<String> paramNames;
    Vector<String> paramValues;

    const AtomicString& codeBase = getAttribute(codebaseAttr);
    if (!codeBase.isNull()) {
        KURL codeBaseURL = document().completeURL(codeBase);
        paramNames.append("codeBase");
        paramValues.append(codeBase.string());
    }

    const AtomicString& archive = getAttribute(archiveAttr);
    if (!archive.isNull()) {
        paramNames.append("archive");
        paramValues.append(archive.string());
    }

    const AtomicString& code = getAttribute(codeAttr);
    paramNames.append("code");
    paramValues.append(code.string());

    // If the 'codebase' attribute is set, it serves as a relative root for the file that the Java
    // plugin will load. If the 'code' attribute is set, and the 'archive' is not set, then we need
    // to check the url generated by resolving 'code' against 'codebase'. If the 'archive'
    // attribute is set, then 'code' points to a class inside the archive, so we need to check the
    // url generated by resolving 'archive' against 'codebase'.
    KURL urlToCheck;
    KURL rootURL = codeBase.isNull() ? document().url() : document().completeURL(codeBase);
    if (!archive.isNull())
        urlToCheck = KURL(rootURL, archive);
    else if (!code.isNull())
        urlToCheck = KURL(rootURL, code);
    if (!canEmbedURL(urlToCheck))
        return;

    const AtomicString& name = document().isHTMLDocument() ? getNameAttribute() : getIdAttribute();
    if (!name.isNull()) {
        paramNames.append("name");
        paramValues.append(name.string());
    }

    paramNames.append("baseURL");
    KURL baseURL = document().baseURL();
    paramValues.append(baseURL.string());

    const AtomicString& mayScript = getAttribute(mayscriptAttr);
    if (!mayScript.isNull()) {
        paramNames.append("mayScript");
        paramValues.append(mayScript.string());
    }

    for (Node* child = firstChild(); child; child = child->nextSibling()) {
        if (!child->hasTagName(paramTag))
            continue;

        HTMLParamElement* param = toHTMLParamElement(child);
        if (param->name().isEmpty())
            continue;

        paramNames.append(param->name());
        paramValues.append(param->value());
    }

    RefPtr<Widget> widget;
    if (frame->loader().allowPlugins(AboutToInstantiatePlugin))
        widget = frame->loader().client()->createJavaAppletWidget(roundedIntSize(LayoutSize(contentWidth, contentHeight)), this, baseURL, paramNames, paramValues);

    if (!widget) {
        if (!renderer->showsUnavailablePluginIndicator())
            renderer->setPluginUnavailabilityReason(RenderEmbeddedObject::PluginMissing);
        return;
    }
    document().setContainsPlugins();
    renderer->setWidget(widget);
}

bool EditorClientImpl::handleEditingKeyboardEvent(KeyboardEvent* evt)
{
    const PlatformKeyboardEvent* keyEvent = evt->keyEvent();
    // do not treat this as text input if it's a system key event
    if (!keyEvent || keyEvent->isSystemKey())
        return false;

    Frame* frame = evt->target()->toNode()->document()->frame();
    if (!frame)
        return false;

    String commandName = interpretKeyEvent(evt);
    Editor::Command command = frame->editor()->command(commandName);

    if (keyEvent->type() == PlatformKeyboardEvent::RawKeyDown) {
        // WebKit doesn't have enough information about mode to decide how
        // commands that just insert text if executed via Editor should be treated,
        // so we leave it upon WebCore to either handle them immediately
        // (e.g. Tab that changes focus) or let a keypress event be generated
        // (e.g. Tab that inserts a Tab character, or Enter).
        if (command.isTextInsertion() || commandName.isEmpty())
            return false;
        if (command.execute(evt)) {
            if (m_webView->client())
                m_webView->client()->didExecuteCommand(WebString(commandName));
            return true;
        }
        return false;
    }

    if (command.execute(evt)) {
        if (m_webView->client())
            m_webView->client()->didExecuteCommand(WebString(commandName));
        return true;
    }

    // Here we need to filter key events.
    // On Gtk/Linux, it emits key events with ASCII text and ctrl on for ctrl-<x>.
    // In Webkit, EditorClient::handleKeyboardEvent in
    // WebKit/gtk/WebCoreSupport/EditorClientGtk.cpp drop such events.
    // On Mac, it emits key events with ASCII text and meta on for Command-<x>.
    // These key events should not emit text insert event.
    // Alt key would be used to insert alternative character, so we should let
    // through. Also note that Ctrl-Alt combination equals to AltGr key which is
    // also used to insert alternative character.
    // http://code.google.com/p/chromium/issues/detail?id=10846
    // Windows sets both alt and meta are on when "Alt" key pressed.
    // http://code.google.com/p/chromium/issues/detail?id=2215
    // Also, we should not rely on an assumption that keyboards don't
    // send ASCII characters when pressing a control key on Windows,
    // which may be configured to do it so by user.
    // See also http://en.wikipedia.org/wiki/Keyboard_Layout
    // FIXME(ukai): investigate more detail for various keyboard layout.
    if (evt->keyEvent()->text().length() == 1) {
        UChar ch = evt->keyEvent()->text()[0U];

        // Don't insert null or control characters as they can result in
        // unexpected behaviour
        if (ch < ' ')
            return false;
#if !OS(WINDOWS)
        // Don't insert ASCII character if ctrl w/o alt or meta is on.
        // On Mac, we should ignore events when meta is on (Command-<x>).
        if (ch < 0x80) {
            if (evt->keyEvent()->ctrlKey() && !evt->keyEvent()->altKey())
                return false;
#if OS(DARWIN)
            if (evt->keyEvent()->metaKey())
            return false;
#endif
        }
#endif
    }

    if (!frame->editor()->canEdit())
        return false;

    return frame->editor()->insertText(evt->keyEvent()->text(), evt);
}

void
FormManager::SwitchToForm(RequestId requestId, Osp::Base::Collection::IList* pArgs)
{
	Frame* pFrame = Application::GetInstance()->GetAppFrame()->GetFrame();
	BaseForm* pExeForm = null;

	switch (requestId)
	{
	case REQUEST_MAINFORM:
	{
		if (__pMainForm == null)
		{
			__pMainForm = new MainForm();
			__pMainForm->Initialize();
			pFrame->AddControl(*__pMainForm);
		}
		pFrame->SetCurrentForm(*__pMainForm);
		__pMainForm->Draw();
		__pMainForm->Show();
		if (__pPreviousForm != null)
		{
			if (__pPreviousForm != __pMainForm)
				pFrame->RemoveControl(*__pPreviousForm);
		}
		__pPreviousForm = __pMainForm;

		return;
	}
	break;

	case REQUEST_FACEBOOKLOGINFORM:

		pExeForm = new LoginForm();
		break;

	case REQUEST_USERPROFILEFORM:

		pExeForm = new UserProfileForm();
		break;


	case REQUEST_FRIENDSFORM:
		pExeForm = new FriendsForm();
		break;

	default:
		return;
		break;
	}

	pExeForm->Initialize();
	pFrame->AddControl(*pExeForm);
	pFrame->SetCurrentForm(*pExeForm);
	pExeForm->Draw();
	pExeForm->Show();

	if (__pPreviousForm != null)
	{
		if (__pPreviousForm != __pMainForm)
			pFrame->RemoveControl(*__pPreviousForm);
	}
	__pPreviousForm = pExeForm;

	return;
}

int main (int argc, char **argv)
{

	Config::init("cluster.cfg");
	loginit();
	Encoder *temp=CodecFactory::getStreamEncoder(1);
  av_register_all ();

  avcodec_init ();
  avcodec_register_all ();

  char *filename = argv[1];



  File file (filename);
  FormatInputStream fois (&file);
  AVFormatContext *ic = fois.getFormatContext ();

  fois.dumpFormat ();
  PacketInputStream pis (fois);
  int got_picture;

  int insize = 0, outsize = 0;




/*
  Encoder enc2 (CODEC_ID_H264);
  enc2.setWidth (format.width);
  enc2.setHeight (format.height);
  enc2.setTimeBase ((AVRational) {1, 25});
  enc2.setBitRate (4000000);
  enc2.setGopSize (250);
  enc2.setPixelFormat (PIX_FMT_YUV420P);
  enc2.open ();
*/





  Decoder * dec=new Decoder (ic->streams[0]->codec->codec_id);
  dec->setWidth (ic->streams[0]->codec->width);
  dec->setHeight (ic->streams[0]->codec->height);
  dec->setTimeBase ((AVRational) {1, 25});
  dec->setPixelFormat (ic->streams[0]->codec->pix_fmt);

//      dec.setGopSize(0);
  dec->open ();

  FrameFormat informat;
  informat.pixel_format = (PixelFormat)dec->getPixelFormat();//_pix_fmt;
  informat.height = ic->streams[0]->codec->height;
  informat.width = ic->streams[0]->codec->width;

  FrameFormat format;
  format.pixel_format = PIX_FMT_YUV420P;
  format.height = ic->streams[0]->codec->height;
  format.width = ic->streams[0]->codec->width;

  FrameConverter converter (informat,format);

//      cerr << "Decoder"<<endl;
//      Encoder enc(CODEC_ID_MPEG2VIDEO);
//      enc.max_b_frames=3;



  Encoder * enc=new Encoder(CODEC_ID_MSMPEG4V3);

//  Encoder * enc=new Encoder(CODEC_ID_H264);
//  Encoder enc (CODEC_ID_H264);
  enc->setWidth (format.width);
  enc->setHeight (format.height);
  enc->setTimeBase ((AVRational) {1, 25});
  enc->setBitRate (4000000);
  enc->setGopSize (25);
  enc->setPixelFormat (PIX_FMT_YUV420P);
//      enc.setFlag(CODEC_FLAG_PASS1);
  enc->open ();

  File fout (argv[2]);
  FormatOutputStream ffos (&fout);
  PacketOutputStream pos (&ffos);
  pos.setEncoder (*enc, 0);
  pos.init ();
//  		fois.seek(0,44289);//38978


//  FILE *logfile;
//  logfile = fopen ("stats.out", "w");
	int a=0;
	bool firstSeek=false;
  for (int i = 0;i < 1000; i++) {
    Packet p;
//    av_init_packet (p.packet);
    if(pis.readPacket (p)<0)break;
    if (p.packet->stream_index != 0)
//.........这里部分代码省略.........

static bool logCanCacheFrameDecision(Frame* frame, int indentLevel)
{
    // Only bother logging for frames that have actually loaded and have content.
    if (frame->loader()->stateMachine()->creatingInitialEmptyDocument())
        return false;
    KURL currentURL = frame->loader()->documentLoader() ? frame->loader()->documentLoader()->url() : KURL();
    if (currentURL.isEmpty())
        return false;
    
    PCLOG("+---");
    KURL newURL = frame->loader()->provisionalDocumentLoader() ? frame->loader()->provisionalDocumentLoader()->url() : KURL();
    if (!newURL.isEmpty())
        PCLOG(" Determining if frame can be cached navigating from (", currentURL.string(), ") to (", newURL.string(), "):");
    else
        PCLOG(" Determining if subframe with URL (", currentURL.string(), ") can be cached:");
    
    bool cannotCache = false;
    
    do {
        if (!frame->loader()->documentLoader()) {
            PCLOG("   -There is no DocumentLoader object");
            cannotCache = true;
            break;
        }
        if (!frame->loader()->documentLoader()->mainDocumentError().isNull()) {
            PCLOG("   -Main document has an error");
            if (frame->loader()->documentLoader()->mainDocumentError().isCancellation() && frame->loader()->documentLoader()->subresourceLoadersArePageCacheAcceptable())
                PCLOG("    -But, it was a cancellation and all loaders during the cancel were loading images.");
            else
                cannotCache = true;
        }
        if (frame->loader()->subframeLoader()->containsPlugins()) {
            PCLOG("   -Frame contains plugins");
            // iOS allows pages with plug-ins to enter the page cache.
            PCLOG("    -But, iOS can handle plugins.");
        }
        if (frame->document()->url().protocolIs("https")) {
            PCLOG("   -Frame is HTTPS");
            cannotCache = true;
        }
        if (frame->domWindow() && frame->domWindow()->hasEventListeners(eventNames().unloadEvent)) {
            PCLOG("   -Frame has an unload event listener");
            // iOS allows pages with unload event listeners to enter the page cache.
            PCLOG("    -BUT iOS allows these pages to be cached.");
        }
#if ENABLE(DATABASE)
        if (frame->document()->hasOpenDatabases()) {
            PCLOG("   -Frame has open database handles");
            cannotCache = true;
        }
#endif
#if ENABLE(SHARED_WORKERS)
        if (SharedWorkerRepository::hasSharedWorkers(frame->document())) {
            PCLOG("   -Frame has associated SharedWorkers");
            cannotCache = true;
        }
#endif
        if (frame->document()->usingGeolocation()) {
            PCLOG("   -Frame uses Geolocation");
            // iOS allows pages geolocation to enter the page cache.
            PCLOG("    -BUT iOS allows these pages to be cached.");
        }
        if (!frame->loader()->history()->currentItem()) {
            PCLOG("   -No current history item");
            cannotCache = true;
        }
        if (frame->loader()->quickRedirectComing()) {
            PCLOG("   -Quick redirect is coming");
            cannotCache = true;
        }
        if (frame->loader()->documentLoader()->isLoadingInAPISense()) {
            PCLOG("   -DocumentLoader is still loading in API sense");
            cannotCache = true;
        }
        if (frame->loader()->documentLoader()->isStopping()) {
            PCLOG("   -DocumentLoader is in the middle of stopping");
            cannotCache = true;
        }
        if (!frame->document()->canSuspendActiveDOMObjects()) {
            PCLOG("   -The document cannot suspect its active DOM Objects");
            cannotCache = true;
        }
#if ENABLE(OFFLINE_WEB_APPLICATIONS)
        if (!frame->loader()->documentLoader()->applicationCacheHost()->canCacheInPageCache()) {
            PCLOG("   -The DocumentLoader uses an application cache");
            cannotCache = true;
        }
#endif
        if (!frame->loader()->client()->canCachePage()) {
            PCLOG("   -The client says this frame cannot be cached");
            cannotCache = true; 
        }
    } while (false);
    
    for (Frame* child = frame->tree()->firstChild(); child; child = child->tree()->nextSibling())
        if (!logCanCacheFrameDecision(child, indentLevel + 1))
            cannotCache = true;
    
    PCLOG(cannotCache ? " Frame CANNOT be cached" : " Frame CAN be cached");
    PCLOG("+---");
//.........这里部分代码省略.........

void CachedFrameBase::restore()
{
    ASSERT(m_document->view() == m_view);

    Frame* frame = m_view->frame();
    m_cachedFrameScriptData->restore(frame);

#if ENABLE(SVG)
    if (m_document->svgExtensions())
        m_document->accessSVGExtensions()->unpauseAnimations();
#endif

    frame->animation()->resumeAnimationsForDocument(m_document.get());
    frame->eventHandler()->setMousePressNode(m_mousePressNode.get());
    m_document->resumeActiveDOMObjects();
    m_document->resumeScriptedAnimationControllerCallbacks();

    // It is necessary to update any platform script objects after restoring the
    // cached page.
    frame->script()->updatePlatformScriptObjects();

    frame->loader()->client()->didRestoreFromPageCache();

    // Reconstruct the FrameTree
    for (unsigned i = 0; i < m_childFrames.size(); ++i)
        frame->tree()->appendChild(m_childFrames[i]->view()->frame());

    // Open the child CachedFrames in their respective FrameLoaders.
    for (unsigned i = 0; i < m_childFrames.size(); ++i)
        m_childFrames[i]->open();

    m_document->enqueuePageshowEvent(PageshowEventPersisted);
    
    HistoryItem* historyItem = frame->loader()->history()->currentItem();
    m_document->enqueuePopstateEvent(historyItem && historyItem->stateObject() ? historyItem->stateObject() : SerializedScriptValue::nullValue());
    
#if ENABLE(TOUCH_EVENTS)
    if (m_document->hasListenerType(Document::TOUCH_LISTENER))
        m_document->page()->chrome()->client()->needTouchEvents(true);
#endif
    // CAPPFIX_WEB_NAMEDITEM_HISTORY_NAV : recover NamedItem for history navigation in case of HTMLDocument.
    Document* document = m_document.get();
    if (document && document->isHTMLDocument() == true) {
        HTMLDocument* htmldocument = static_cast<HTMLDocument*>(document);
        RefPtr<HTMLCollection> items = document->all();;
        Node* item;
        for (unsigned i = 0; i < items->length(); i++) {
            item = items->item(i);
            if (!item->isElementNode())
                continue;
            Element* e = static_cast<Element*>(item);
            if (e->hasLocalName(HTMLNames::imgTag) || e->hasLocalName(HTMLNames::formTag) || e->hasLocalName(HTMLNames::objectTag)
                || e->hasLocalName(HTMLNames::embedTag) || e->hasLocalName(HTMLNames::appletTag)) {
                const AtomicString &name = e->getAttribute(HTMLNames::nameAttr);
                if (name != nullAtom)
                    htmldocument->addNamedItem(name);
            }
        }
    }
    // CAPPFIX_WEB_NAMEDITEM_HISTORY_NAV_END
    m_document->documentDidBecomeActive();
}

JSValue JSDOMWindow::showModalDialog(ExecState* exec, const ArgList& args)
{
    Frame* frame = impl()->frame();
    if (!frame)
        return jsUndefined();
    Frame* lexicalFrame = toLexicalFrame(exec);
    if (!lexicalFrame)
        return jsUndefined();
    Frame* dynamicFrame = toDynamicFrame(exec);
    if (!dynamicFrame)
        return jsUndefined();

    if (!DOMWindow::canShowModalDialogNow(frame) || !DOMWindow::allowPopUp(dynamicFrame))
        return jsUndefined();

    String url = valueToStringWithUndefinedOrNullCheck(exec, args.at(0));
    JSValue dialogArgs = args.at(1);
    String featureArgs = valueToStringWithUndefinedOrNullCheck(exec, args.at(2));

    HashMap<String, String> features;
    DOMWindow::parseModalDialogFeatures(featureArgs, features);

    const bool trusted = false;

    // The following features from Microsoft's documentation are not implemented:
    // - default font settings
    // - width, height, left, and top specified in units other than "px"
    // - edge (sunken or raised, default is raised)
    // - dialogHide: trusted && boolFeature(features, "dialoghide"), makes dialog hide when you print
    // - help: boolFeature(features, "help", true), makes help icon appear in dialog (what does it do on Windows?)
    // - unadorned: trusted && boolFeature(features, "unadorned");

    FloatRect screenRect = screenAvailableRect(frame->view());

    WindowFeatures wargs;
    wargs.width = WindowFeatures::floatFeature(features, "dialogwidth", 100, screenRect.width(), 620); // default here came from frame size of dialog in MacIE
    wargs.widthSet = true;
    wargs.height = WindowFeatures::floatFeature(features, "dialogheight", 100, screenRect.height(), 450); // default here came from frame size of dialog in MacIE
    wargs.heightSet = true;

    wargs.x = WindowFeatures::floatFeature(features, "dialogleft", screenRect.x(), screenRect.right() - wargs.width, -1);
    wargs.xSet = wargs.x > 0;
    wargs.y = WindowFeatures::floatFeature(features, "dialogtop", screenRect.y(), screenRect.bottom() - wargs.height, -1);
    wargs.ySet = wargs.y > 0;

    if (WindowFeatures::boolFeature(features, "center", true)) {
        if (!wargs.xSet) {
            wargs.x = screenRect.x() + (screenRect.width() - wargs.width) / 2;
            wargs.xSet = true;
        }
        if (!wargs.ySet) {
            wargs.y = screenRect.y() + (screenRect.height() - wargs.height) / 2;
            wargs.ySet = true;
        }
    }

    wargs.dialog = true;
    wargs.resizable = WindowFeatures::boolFeature(features, "resizable");
    wargs.scrollbarsVisible = WindowFeatures::boolFeature(features, "scroll", true);
    wargs.statusBarVisible = WindowFeatures::boolFeature(features, "status", !trusted);
    wargs.menuBarVisible = false;
    wargs.toolBarVisible = false;
    wargs.locationBarVisible = false;
    wargs.fullscreen = false;

    Frame* dialogFrame = createWindow(exec, lexicalFrame, dynamicFrame, frame, url, "", wargs, dialogArgs);
    if (!dialogFrame)
        return jsUndefined();

    JSDOMWindow* dialogWindow = toJSDOMWindow(dialogFrame);
    dialogFrame->page()->chrome()->runModal();

    return dialogWindow->getDirect(Identifier(exec, "returnValue"));
}

JSValue* JSSVGViewElement::getValueProperty(ExecState* exec, int token) const
{
    switch (token) {
    case ViewTargetAttrNum: {
        SVGViewElement* imp = static_cast<SVGViewElement*>(impl());

        return toJS(exec, WTF::getPtr(imp->viewTarget()));
    }
    case ExternalResourcesRequiredAttrNum: {
        SVGViewElement* imp = static_cast<SVGViewElement*>(impl());

        ASSERT(exec && exec->dynamicInterpreter());

        RefPtr<SVGAnimatedBoolean> obj = imp->externalResourcesRequiredAnimated();
        Frame* activeFrame = static_cast<ScriptInterpreter*>(exec->dynamicInterpreter())->frame();
        if (activeFrame) {
            SVGDocumentExtensions* extensions = (activeFrame->document() ? activeFrame->document()->accessSVGExtensions() : 0);
            if (extensions) {
                if (extensions->hasGenericContext<SVGAnimatedBoolean>(obj.get()))
                    ASSERT(extensions->genericContext<SVGAnimatedBoolean>(obj.get()) == imp);
                else
                    extensions->setGenericContext<SVGAnimatedBoolean>(obj.get(), imp);
            }
        }

        return toJS(exec, obj.get());
    }
    case ViewBoxAttrNum: {
        SVGViewElement* imp = static_cast<SVGViewElement*>(impl());

        ASSERT(exec && exec->dynamicInterpreter());

        RefPtr<SVGAnimatedRect> obj = imp->viewBoxAnimated();
        Frame* activeFrame = static_cast<ScriptInterpreter*>(exec->dynamicInterpreter())->frame();
        if (activeFrame) {
            SVGDocumentExtensions* extensions = (activeFrame->document() ? activeFrame->document()->accessSVGExtensions() : 0);
            if (extensions) {
                if (extensions->hasGenericContext<SVGAnimatedRect>(obj.get()))
                    ASSERT(extensions->genericContext<SVGAnimatedRect>(obj.get()) == imp);
                else
                    extensions->setGenericContext<SVGAnimatedRect>(obj.get(), imp);
            }
        }

        return toJS(exec, obj.get());
    }
    case PreserveAspectRatioAttrNum: {
        SVGViewElement* imp = static_cast<SVGViewElement*>(impl());

        ASSERT(exec && exec->dynamicInterpreter());

        RefPtr<SVGAnimatedPreserveAspectRatio> obj = imp->preserveAspectRatioAnimated();
        Frame* activeFrame = static_cast<ScriptInterpreter*>(exec->dynamicInterpreter())->frame();
        if (activeFrame) {
            SVGDocumentExtensions* extensions = (activeFrame->document() ? activeFrame->document()->accessSVGExtensions() : 0);
            if (extensions) {
                if (extensions->hasGenericContext<SVGAnimatedPreserveAspectRatio>(obj.get()))
                    ASSERT(extensions->genericContext<SVGAnimatedPreserveAspectRatio>(obj.get()) == imp);
                else
                    extensions->setGenericContext<SVGAnimatedPreserveAspectRatio>(obj.get(), imp);
            }
        }

        return toJS(exec, obj.get());
    }
    case ZoomAndPanAttrNum: {
        SVGViewElement* imp = static_cast<SVGViewElement*>(impl());

        return jsNumber(imp->zoomAndPan());
    }
    }
    return 0;
}

v8::Handle<v8::Value> V8AudioContext::constructorCallback(const v8::Arguments& args)
{
    INC_STATS("DOM.AudioContext.Contructor");

    if (!args.IsConstructCall())
        return throwTypeError("AudioContext constructor cannot be called as a function.", args.GetIsolate());

    if (ConstructorMode::current() == ConstructorMode::WrapExistingObject)
        return args.Holder();

    Frame* frame = currentFrame(BindingState::instance());
    if (!frame)
        return throwError(ReferenceError, "AudioContext constructor associated frame is unavailable", args.GetIsolate());

    Document* document = frame->document();
    if (!document)
        return throwError(ReferenceError, "AudioContext constructor associated document is unavailable", args.GetIsolate());

    RefPtr<AudioContext> audioContext;
    
    if (!args.Length()) {
        // Constructor for default AudioContext which talks to audio hardware.
        ExceptionCode ec = 0;
        audioContext = AudioContext::create(document, ec);
        if (ec)
            return setDOMException(ec, args.GetIsolate());
        if (!audioContext.get())
            return throwError(SyntaxError, "audio resources unavailable for AudioContext construction", args.GetIsolate());
    } else {
        // Constructor for offline (render-target) AudioContext which renders into an AudioBuffer.
        // new AudioContext(in unsigned long numberOfChannels, in unsigned long numberOfFrames, in float sampleRate);
        if (args.Length() < 3)
            return throwNotEnoughArgumentsError(args.GetIsolate());

        bool ok = false;

        int32_t numberOfChannels = toInt32(args[0], ok);
        if (!ok || numberOfChannels <= 0 || numberOfChannels > 10)
            return throwError(SyntaxError, "Invalid number of channels", args.GetIsolate());

        int32_t numberOfFrames = toInt32(args[1], ok);
        if (!ok || numberOfFrames <= 0)
            return throwError(SyntaxError, "Invalid number of frames", args.GetIsolate());

        float sampleRate = toFloat(args[2]);
        if (sampleRate <= 0)
            return throwError(SyntaxError, "Invalid sample rate", args.GetIsolate());

        ExceptionCode ec = 0;
        audioContext = AudioContext::createOfflineContext(document, numberOfChannels, numberOfFrames, sampleRate, ec);
        if (ec)
            return setDOMException(ec, args.GetIsolate());
    }

    if (!audioContext.get())
        return throwError(SyntaxError, "Error creating AudioContext", args.GetIsolate());
    
    // Transform the holder into a wrapper object for the audio context.
    V8DOMWrapper::setDOMWrapper(args.Holder(), &info, audioContext.get());
    audioContext->ref();
    
    return args.Holder();
}

bool Dyninst::Stackwalker::frame_addr_cmp(const Frame &a, const Frame &b)
{
   return a.getRA() < b.getRA();
}