// --------------------
// 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);
}
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);
}
}
status_t
GameSoundBuffer::Connect(media_node * consumer)
{
BMediaRoster* roster = BMediaRoster::Roster();
status_t err = roster->RegisterNode(fNode);
if (err != B_OK)
return err;
// make sure the Media Roster knows that we're using the node
err = roster->GetNodeFor(fNode->Node().node, &fConnection->producer);
if (err != B_OK)
return err;
// connect to the mixer
fConnection->consumer = *consumer;
// set the producer's time source to be the "default" time source, which
// the Mixer uses too.
err = roster->GetTimeSource(&fConnection->timeSource);
if (err != B_OK)
return err;
err = roster->SetTimeSourceFor(fConnection->producer.node, fConnection->timeSource.node);
if (err != B_OK)
return err;
// got the nodes; now we find the endpoints of the connection
media_input mixerInput;
media_output soundOutput;
int32 count = 1;
err = roster->GetFreeOutputsFor(fConnection->producer, &soundOutput, 1, &count);
if (err != B_OK)
return err;
count = 1;
err = roster->GetFreeInputsFor(fConnection->consumer, &mixerInput, 1, &count);
if (err != B_OK)
return err;
// got the endpoints; now we connect it!
media_format format;
format.type = B_MEDIA_RAW_AUDIO;
format.u.raw_audio = media_raw_audio_format::wildcard;
err = roster->Connect(soundOutput.source, mixerInput.destination, &format, &soundOutput, &mixerInput);
if (err != B_OK)
return err;
// the inputs and outputs might have been reassigned during the
// nodes' negotiation of the Connect(). That's why we wait until
// after Connect() finishes to save their contents.
fConnection->format = format;
fConnection->source = soundOutput.source;
fConnection->destination = mixerInput.destination;
fIsConnected = true;
return B_OK;
}
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);
}
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));
}
void
MediaWindow::SmartNode::SetTo(const dormant_node_info* info)
{
_FreeNode();
if (!info)
return;
fNode = new media_node();
BMediaRoster* roster = BMediaRoster::Roster();
// TODO: error codes
media_node_id node_id;
if (roster->GetInstancesFor(info->addon, info->flavor_id, &node_id) == B_OK)
roster->GetNodeFor(node_id, fNode);
else
roster->InstantiateDormantNode(*info, fNode, B_FLAVOR_IS_GLOBAL);
roster->StartWatching(fMessenger, *fNode, B_MEDIA_WILDCARD);
}
void
NodeHarnessWin::MessageReceived(BMessage *msg)
{
status_t err;
switch (msg->what)
{
case BUTTON_CONNECT:
mIsConnected = true;
// set the button states appropriately
mConnectButton->SetEnabled(false);
mStartButton->SetEnabled(true);
// set up the node network
{
BMediaRoster* r = BMediaRoster::Roster();
// find a node that can handle an audio file
#if TEST_WITH_AUDIO
entry_ref inRef;
dormant_node_info info;
::get_ref_for_path("/boot/optional/sound/virtual (void)", &inRef);
err = r->SniffRef(inRef, B_BUFFER_PRODUCER | B_FILE_INTERFACE, &info);
ErrorCheck(err, "couldn't find file reader node\n");
err = r->InstantiateDormantNode(info, &mConnection.producer, B_FLAVOR_IS_LOCAL);
ErrorCheck(err, "couldn't instantiate file reader node\n");
bigtime_t dummy_length; // output = media length; we don't use it
err = r->SetRefFor(mConnection.producer, inRef, false, &dummy_length);
ErrorCheck(err, "unable to SetRefFor() to read that sound file!\n");
#else
r->GetVideoInput(&mConnection.producer);
#endif
entry_ref logRef;
::get_ref_for_path("/tmp/node_log", &logRef);
mLogNode = new LoggingConsumer(logRef);
err = r->RegisterNode(mLogNode);
ErrorCheck(err, "unable to register LoggingConsumer node!\n");
// make sure the Media Roster knows that we're using the node
r->GetNodeFor(mLogNode->Node().node, &mConnection.consumer);
// trim down the log's verbosity a touch
mLogNode->SetEnabled(LOG_HANDLE_EVENT, false);
// fire off a window with the LoggingConsumer's controls in it
BParameterWeb* web;
r->GetParameterWebFor(mConnection.consumer, &web);
BView* view = BMediaTheme::ViewFor(web);
BWindow* win = new BWindow(BRect(250, 200, 300, 300), "Controls",
B_TITLED_WINDOW, B_ASYNCHRONOUS_CONTROLS);
win->AddChild(view);
win->ResizeTo(view->Bounds().Width(), view->Bounds().Height());
win->Show();
// set the nodes' time sources
r->GetTimeSource(&mTimeSource);
r->SetTimeSourceFor(mConnection.consumer.node, mTimeSource.node);
r->SetTimeSourceFor(mConnection.producer.node, mTimeSource.node);
// got the nodes; now we find the endpoints of the connection
media_input logInput;
media_output soundOutput;
int32 count;
err = r->GetFreeOutputsFor(mConnection.producer, &soundOutput, 1, &count);
ErrorCheck(err, "unable to get a free output from the producer node");
err = r->GetFreeInputsFor(mConnection.consumer, &logInput, 1, &count);
ErrorCheck(err, "unable to get a free input to the LoggingConsumer");
// fill in the rest of the Connection object
mConnection.source = soundOutput.source;
mConnection.destination = logInput.destination;
// got the endpoints; now we connect it!
media_format format;
#if TEST_WITH_AUDIO
format.type = B_MEDIA_RAW_AUDIO; // !!! hmmm.. how to fully wildcard this?
format.u.raw_audio = media_raw_audio_format::wildcard;
#else
format.type = B_MEDIA_RAW_VIDEO; // !!! hmmm.. how to fully wildcard this?
format.u.raw_video = media_raw_video_format::wildcard;
#endif
err = r->Connect(mConnection.source, mConnection.destination, &format, &soundOutput, &logInput);
ErrorCheck(err, "unable to connect nodes");
mConnection.format = format;
// for video input, we need to set the downstream latency for record -> playback
bigtime_t latency;
r->GetLatencyFor(mConnection.producer, &latency);
printf("Setting producer run mode latency to %" B_PRIdBIGTIME "\n", latency);
r->SetProducerRunModeDelay(mConnection.producer, latency + 6000);
// preroll first, to be a good citizen
r->PrerollNode(mConnection.consumer);
r->PrerollNode(mConnection.producer);
// start the LoggingConsumer and leave it running
BTimeSource* ts = r->MakeTimeSourceFor(mTimeSource);
r->StartNode(mConnection.consumer, ts->Now());
ts->Release();
}
break;
case BUTTON_START:
mStartButton->SetEnabled(false);
mStopButton->SetEnabled(true);
// start the consumer running
{
bigtime_t latency;
BMediaRoster* r = BMediaRoster::Roster();
BTimeSource* ts = r->MakeTimeSourceFor(mConnection.consumer);
r->GetLatencyFor(mConnection.producer, &latency);
r->StartNode(mConnection.producer, ts->Now() + latency);
ts->Release();
mIsRunning = true;
}
break;
case BUTTON_STOP:
StopNodes();
break;
default:
BWindow::MessageReceived(msg);
break;
}
}