C++ BMediaRoster类代码示例

本文整理汇总了C++中BMediaRoster类的典型用法代码示例。如果您正苦于以下问题：C++ BMediaRoster类的具体用法？C++ BMediaRoster怎么用？C++ BMediaRoster使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了BMediaRoster类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: switch

void
AudioSettingsView::MessageReceived(BMessage* message)
{
	switch (message->what) {
		case ML_DEFAULT_CHANNEL_CHANGED:
			{
				int32 index;
				if (message->FindInt32("index", &index) != B_OK)
					break;
				ChannelMenuItem* item = _ChannelMenuItemAt(index);

				if (item) {
					BMediaRoster* roster = BMediaRoster::Roster();
					roster->SetAudioOutput(*item->Input());
				} else
					fprintf(stderr, "ChannelMenuItem not found\n");
			}
			break;
		case MEDIA_SHOW_HIDE_VOLUME_CONTROL:
		{
			if (fVolumeCheckBox->Value() == B_CONTROL_ON)
				_ShowDeskbarVolumeControl();
			else
				_HideDeskbarVolumeControl();
			break;
		}

		default:
			SettingsView::MessageReceived(message);
	}
}

开发者ID:veer77，项目名称:Haiku-services-branch，代码行数:31，代码来源:MediaViews.cpp

示例2: _EmptyNodeLists

MediaWindow::~MediaWindow()
{
	_EmptyNodeLists();
	_ClearParamView();

	char buffer[512];
	BRect rect = Frame();
	PRINT_OBJECT(rect);
	snprintf(buffer, 512, "# MediaPrefs Settings\n rect = %i,%i,%i,%i\n",
		int(rect.left), int(rect.top), int(rect.right), int(rect.bottom));

	BPath path;
	if (find_directory(B_USER_SETTINGS_DIRECTORY, &path) == B_OK) {
		path.Append(SETTINGS_FILE);
		BFile file(path.Path(), B_READ_WRITE | B_CREATE_FILE | B_ERASE_FILE);
		if (file.InitCheck() == B_OK)
			file.Write(buffer, strlen(buffer));
	}

	BMediaRoster* roster = BMediaRoster::CurrentRoster();
	roster->StopWatching(BMessenger(this, this),
		B_MEDIA_SERVER_STARTED);
	roster->StartWatching(BMessenger(this, this),
		B_MEDIA_SERVER_QUIT);
}

开发者ID:bhanug，项目名称:haiku，代码行数:25，代码来源:MediaWindow.cpp

示例3: malloc

live_node_info*
JackClient::_LiveNodes(int32* live_count)
{
	BMediaRoster* roster = BMediaRoster::Roster();

	// TODO set autodeleter to live_nodes
	live_node_info* live_nodes = (live_node_info*) malloc(100);
	int32 count;

	media_format outFormat;
	memset(&outFormat, 0, sizeof(outFormat));
	outFormat.type = B_MEDIA_RAW_AUDIO;

	media_format inFormat;
	memset(&inFormat, 0, sizeof(inFormat));
	inFormat.type = B_MEDIA_RAW_AUDIO;

	status_t err = roster->GetLiveNodes(live_nodes, &count,
		&inFormat, &outFormat, NULL, 0);

	if (err != B_OK)
		return NULL;

	*live_count = count;
	return live_nodes;
}

开发者ID:Barrett17，项目名称:libjackcompat，代码行数:26，代码来源:JackClient.cpp

示例4: D_INTERNAL

status_t ParameterWindow::_startControlPanel() {
    D_INTERNAL(("ParameterWindow::_startControlPanel()\n"));

    // get roster instance
    BMediaRoster *roster = BMediaRoster::CurrentRoster();
    if (!roster) {
        D_INTERNAL((" -> MediaRoster not available\n"));
        return B_ERROR;
    }

    // try to StartControlPanel()
    BMessenger messenger;
    status_t error = roster->StartControlPanel(m_node, &messenger);
    if (error) {
        D_INTERNAL((" -> StartControlPanel() failed (%s)\n", strerror(error)));
        return error;
    }

    // notify the notification target, if any
    if (m_notifyTarget) {
        BMessage message(M_CONTROL_PANEL_STARTED);
        message.AddInt32("nodeID", m_node.node);
        message.AddMessenger("messenger", messenger);
        error = m_notifyTarget->SendMessage(&message);
        if (error) {
            D_INTERNAL((" -> failed to notify target\n"));
        }
    }

    return B_OK;
}

开发者ID:nielx，项目名称:haiku-serviceskit，代码行数:31，代码来源:ParameterWindow.cpp

示例5: BWindow

// --------------------
// NodeHarnessWin implementation
NodeHarnessWin::NodeHarnessWin(BRect frame, const char *title)
    :	BWindow(frame, title, B_TITLED_WINDOW, B_NOT_RESIZABLE | B_ASYNCHRONOUS_CONTROLS),
      mToneNode(NULL), mIsConnected(false), mIsRunning(false)
{
    // build the UI
    BRect r(10, 10, 100, 40);
    mConnectButton = new BButton(r, "Connect", "Connect", new BMessage(BUTTON_CONNECT));
    mConnectButton->SetEnabled(true);
    AddChild(mConnectButton);
    r.OffsetBy(0, 40);
    mStartButton = new BButton(r, "Start", "Start", new BMessage(BUTTON_START));
    mStartButton->SetEnabled(false);
    AddChild(mStartButton);
    r.OffsetBy(0, 40);
    mStopButton = new BButton(r, "Stop", "Stop", new BMessage(BUTTON_STOP));
    mStopButton->SetEnabled(false);
    AddChild(mStopButton);

    // e.moon 2jun99: create the node
    BMediaRoster* roster = BMediaRoster::Roster();
    mToneNode = new ToneProducer();

    status_t err = roster->RegisterNode(mToneNode);
    ErrorCheck(err, "unable to register ToneProducer node!\n");
    // make sure the Media Roster knows that we're using the node
    roster->GetNodeFor(mToneNode->Node().node, &mConnection.producer);
}

开发者ID:，项目名称:，代码行数:29，代码来源:

示例6: fprintf

NodeHarnessWin::~NodeHarnessWin()
{
    BMediaRoster* r = BMediaRoster::Roster();

    // tear down the node network
    if (mIsRunning) StopNodes();
    if (mIsConnected)
    {
        status_t err;

        // Ordinarily we'd stop *all* of the nodes in the chain at this point.  However,
        // one of the nodes is the System Mixer, and stopping the Mixer is a Bad Idea (tm).
        // So, we just disconnect from it, and release our references to the nodes that
        // we're using.  We *are* supposed to do that even for global nodes like the Mixer.
        err = r->Disconnect(mConnection.producer.node, mConnection.source,
                            mConnection.consumer.node, mConnection.destination);
        if (err)
        {
            fprintf(stderr, "* Error disconnecting nodes:  %ld (%s)\n", err, strerror(err));
        }

        r->ReleaseNode(mConnection.producer);
        r->ReleaseNode(mConnection.consumer);
    }
}

开发者ID:，项目名称:，代码行数:25，代码来源:

示例7: _DisconnectVolume

void
VolumeControl::_ConnectVolume()
{
	_DisconnectVolume();

	const char* errorString = NULL;
	float volume = 0.0;
	fMixerControl->Connect(fMixerControl->VolumeWhich(), &volume, &errorString);

	if (errorString != NULL) {
		SetLabel(errorString);
		SetLimits(-60, 18);
	} else {
		SetLabel(B_TRANSLATE("Volume"));
		SetLimits((int32)floorf(fMixerControl->Minimum()),
			(int32)ceilf(fMixerControl->Maximum()));

		BMediaRoster* roster = BMediaRoster::CurrentRoster();
		if (roster != NULL && fMixerControl->GainNode() != media_node::null) {
			roster->StartWatching(this, fMixerControl->GainNode(),
				B_MEDIA_NEW_PARAMETER_VALUE);
		}
	}

	SetEnabled(errorString == NULL);

	fOriginalValue = (int32)volume;
	SetValue((int32)volume);
}

开发者ID:yunxiaoxiao110，项目名称:haiku，代码行数:29，代码来源:VolumeControl.cpp

示例8: D_INTERNAL

void DormantNodeView::_populateList() {
	D_INTERNAL(("DormantNodeView::_populateList()\n"));

	// init the resizable node-info buffer
	BMediaRoster *roster = BMediaRoster::CurrentRoster();
	const int32 bufferInc = 64;
	int32 bufferSize = bufferInc;
	dormant_node_info *infoBuffer = new dormant_node_info[bufferSize];
	int32 numNodes;
	
	// fill the buffer
	while (true) {
		numNodes = bufferSize;
		status_t error = roster->GetDormantNodes(infoBuffer, &numNodes);
		if (error) {
			return;
		}
		if (numNodes < bufferSize) {
			break;
		}
			
		// reallocate buffer & try again
		delete [] infoBuffer;
		bufferSize += bufferInc;
		infoBuffer = new dormant_node_info[bufferSize];
	}
	
	// populate the list
	for (int32 i = 0; i < numNodes; i++) {
		DormantNodeListItem *item = new DormantNodeListItem(infoBuffer[i]);
		AddItem(item);
	}
	SortItems(compareName);
}

开发者ID:mariuz，项目名称:haiku，代码行数:34，代码来源:DormantNodeView.cpp

示例9: _FreeNode

void
MediaWindow::SmartNode::SetTo(const dormant_node_info* info)
{
	_FreeNode();
	if (!info)
		return;

	fNode = new media_node();
	BMediaRoster* roster = BMediaRoster::Roster();

	status_t status = B_OK;
	media_node_id node_id;
	if (roster->GetInstancesFor(info->addon, info->flavor_id, &node_id) == B_OK)
		status = roster->GetNodeFor(node_id, fNode);
	else
		status = roster->InstantiateDormantNode(*info, fNode, B_FLAVOR_IS_GLOBAL);

	if (status != B_OK) {
		fprintf(stderr, "SmartNode::SetTo error with node %" B_PRId32
			": %s\n", fNode->node, strerror(status));
	}

	status = roster->StartWatching(fMessenger, *fNode, B_MEDIA_WILDCARD);
	if (status != B_OK) {
		fprintf(stderr, "SmartNode::SetTo can't start watching for"
			" node %" B_PRId32 "\n", fNode->node);
	}
}

开发者ID:bhanug，项目名称:haiku，代码行数:28，代码来源:MediaWindow.cpp

示例10: D_METHOD

NodeRef::~NodeRef() {
	D_METHOD(("~NodeRef[%s]\n", name()));
	Autolock _l(m_manager);
	
	// remove from NodeManager
	m_manager->_removeRef(id());
	
	// [14oct99 e.moon] kill position-report thread if necessary
	if(m_positionThread)
		_stopPositionThread();

	if(m_addonHint) {
		delete m_addonHint;
		m_addonHint = 0;
	}

	// close Media Roster connection [e.moon 11oct99]
	BMediaRoster* r = BMediaRoster::Roster();
	if(m_watching) {
		r->StopWatching(
			BMessenger(this),
			node(),
			B_MEDIA_WILDCARD);
	}
}

开发者ID:mariuz，项目名称:haiku，代码行数:25，代码来源:NodeRef.cpp

示例11: _DisconnectVolume

void
VolumeControl::DetachedFromWindow()
{
	_DisconnectVolume();

	BMediaRoster* roster = BMediaRoster::CurrentRoster();
	roster->StopWatching(BMessenger(this), B_MEDIA_SERVER_STARTED);
	roster->StopWatching(BMessenger(this), B_MEDIA_SERVER_QUIT);
}

开发者ID:AmirAbrams，项目名称:haiku，代码行数:9，代码来源:VolumeControl.cpp

示例12:

void
VolumeControl::_DisconnectVolume()
{
	BMediaRoster* roster = BMediaRoster::CurrentRoster();
	if (roster != NULL && fMixerControl->GainNode() != media_node::null) {
		roster->StopWatching(this, fMixerControl->GainNode(),
			B_MEDIA_NEW_PARAMETER_VALUE);
	}
}

开发者ID:yunxiaoxiao110，项目名称:haiku，代码行数:9，代码来源:VolumeControl.cpp

示例13: CALLED

void
BMediaClient::_Init()
{
	CALLED();

	BMediaRoster* roster = BMediaRoster::Roster(&fInitErr);
	if (fInitErr == B_OK && roster != NULL)
		fInitErr = roster->RegisterNode(fNode);
}

开发者ID:，项目名称:，代码行数:9，代码来源:

示例14: _EmptyMenu

void
AudioSettingsView::_FillChannelMenu(const dormant_node_info* nodeInfo)
{
	_EmptyMenu(fChannelMenu);

	BMediaRoster* roster = BMediaRoster::Roster();
	media_node node;
	media_node_id node_id;

	status_t err = roster->GetInstancesFor(nodeInfo->addon,
		nodeInfo->flavor_id, &node_id);
	if (err != B_OK) {
		err = roster->InstantiateDormantNode(*nodeInfo, &node,
			B_FLAVOR_IS_GLOBAL);
	} else {
		err = roster->GetNodeFor(node_id, &node);
	}

	if (err == B_OK) {
		int32 inputCount = 4;
		media_input* inputs = new media_input[inputCount];
		BPrivate::ArrayDeleter<media_input> inputDeleter(inputs);

		while (true) {
			int32 realInputCount = 0;
			err = roster->GetAllInputsFor(node, inputs,
				inputCount, &realInputCount);
			if (realInputCount > inputCount) {
				inputCount *= 2;
				inputs = new media_input[inputCount];
				inputDeleter.SetTo(inputs);
			} else {
				inputCount = realInputCount;
				break;
			}
		}

		if (err == B_OK) {
			BMessage message(ML_DEFAULT_CHANNEL_CHANGED);

			for (int32 i = 0; i < inputCount; i++) {
				media_input* input = new media_input();
				memcpy(input, &inputs[i], sizeof(*input));
				ChannelMenuItem* channelItem = new ChannelMenuItem(input,
					new BMessage(message));
				fChannelMenu->AddItem(channelItem);

				if (channelItem->DestinationID() == 0)
					channelItem->SetMarked(true);
			}
		}
	}

	if (Window())
		fChannelMenu->SetTargetForItems(BMessenger(this));
}

开发者ID:veer77，项目名称:Haiku-services-branch，代码行数:56，代码来源:MediaViews.cpp

示例15: BApplication

MediaNodeControlApp::MediaNodeControlApp(
	const char* pAppSignature,
	media_node_id nodeID) :
	BApplication(pAppSignature) {

	BMediaRoster* r = BMediaRoster::Roster();
	
	// get the node	
	status_t err = r->GetNodeFor(nodeID, &m_node);
	if(err < B_OK) {
		char buffer[512];
		sprintf(buffer,
			"MediaNodeControlApp: couldn't find node (%ld):\n%s\n",
			nodeID, strerror(err));
		(new BAlert("error", buffer, "OK"))->Go();
		return;
	}
	
	// fetch info (name)
	live_node_info nInfo;
	err = r->GetLiveNodeInfo(m_node, &nInfo);
	if(err < B_OK) {
		char buffer[512];
		sprintf(buffer,
			"MediaNodeControlApp: couldn't get node info (%ld):\n%s\n",
			nodeID, strerror(err));
		(new BAlert("error", buffer, "OK"))->Go();
		return;
	}
	
	BString windowTitle;
	windowTitle << nInfo.name << '(' << nodeID << ") controls";		
	
	// get parameter web
	BParameterWeb* pWeb;
	err = r->GetParameterWebFor(m_node, &pWeb);
	if(err < B_OK) {
		char buffer[512];
		sprintf(buffer,
			"MediaNodeControlApp: no parameters for node (%ld):\n%s\n",
			nodeID, strerror(err));
		(new BAlert("error", buffer, "OK"))->Go();
		return;
	}
	
	// build & show control window
	BView* pView = BMediaTheme::ViewFor(pWeb);
	BWindow* pWnd = new PanelWindow();
	pWnd->AddChild(pView);
	pWnd->ResizeTo(pView->Bounds().Width(), pView->Bounds().Height());
	pWnd->SetTitle(windowTitle.String());
	pWnd->Show();
	
	// release the node
	//r->ReleaseNode(m_node);	
}

开发者ID:mariuz，项目名称:haiku，代码行数:56，代码来源:MediaNodeControlApp.cpp

注：本文中的BMediaRoster类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。