* Whether an audio and/or video node is used is now more explicit. The audio

node can now also be turned off for videos that don't have audio.
* The PlaybackManager currently has the "no audio" support added in a not
  quite so nice way, will have to think about something, this is just quick
  and dirty to get it going. There is just two places where the audio time
  needs to be ignored, because it remains at zero.
  
-> Especially when using OSS, the seeking latency will be much reduced when
  playing videos that have no sound.

* The Controller now maintains the frame it wanted to seek to and does not
  forward "position changed" to other listeners as long as the seek frame
  has not been reached. This fixes the slider jumping back to the old position
  for a bit until jumping back to the seek frame. It also fixes another
  problem when switching to the next file. Because the total duration is
  already adopted while the old clip is still playing within the seek latency,
  the current position jumped to the new relative position, while it is
  still refering to the position within the old clip. So both seeking and
  switching clips looks much smoother now.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26415 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/mediaplayer/Controller.cpp

@@ -100,6 +100,7 @@ Controller::Controller()
  ,	fPosition(0)
  ,	fDuration(0)
  ,	fVideoFrameRate(25.0)
+ ,	fSeekFrame(-1)
 
  ,	fAutoplay(true)
  ,	fPauseAtEndOfStream(false)
@@ -164,7 +165,7 @@ Controller::SetTo(const entry_ref &ref)
 
 	if (fRef == ref) {
 		if (InitCheck() == B_OK) {
-			SetCurrentFrame(0);
+			SetPosition(0.0);
 			StartPlaying();
 		}
 		return B_OK;
@@ -269,17 +270,25 @@ Controller::SetTo(const entry_ref &ref)
 		preferredVideoFormat = format.u.raw_video.display.format;
 	}
 
+	uint32 enabledNodes;
+	if (!fVideoTrackSupplier)
+		enabledNodes = AUDIO_ONLY;
+	else if (!fAudioTrackSupplier)
+		enabledNodes = VIDEO_ONLY;
+	else
+		enabledNodes = AUDIO_AND_VIDEO;
+
 	if (InitCheck() != B_OK) {
 		Init(BRect(0, 0, width - 1, height - 1), fVideoFrameRate,
-			preferredVideoFormat, LOOPING_ALL, false);
+			preferredVideoFormat, LOOPING_ALL, false, 1.0, enabledNodes);
 	} else {
 		FormatChanged(BRect(0, 0, width - 1, height - 1), fVideoFrameRate,
-			preferredVideoFormat);
+			preferredVideoFormat, enabledNodes);
 	}
 
 	_NotifyFileChanged();
 
-	SetCurrentFrame(0);
+	SetPosition(0.0);
 	if (fAutoplay)
 		StartPlaying(true);
 
@@ -420,7 +429,7 @@ Controller::Stop()
 	BAutolock _(this);
 
 	StopPlaying();
-	SetCurrentFrame(0);
+	SetPosition(0.0);
 }
 
 
@@ -559,8 +568,14 @@ Controller::SetPosition(float value)
 {
 	BAutolock _(this);
 
-	SetCurrentFrame(Duration() * value);
+	fSeekFrame = (int32)(Duration() * value);
+	int32 currentFrame = CurrentFrame();
+	if (fSeekFrame != currentFrame)
+		SetCurrentFrame(fSeekFrame);
+	else
+		fSeekFrame = -1;
 
+	// TODO: What was this used for in the old framework?
 	fSeekToStartAfterPause = false;
 }
 
@@ -891,6 +906,12 @@ Controller::NotifyFPSChanged(float fps) const
 void
 Controller::NotifyCurrentFrameChanged(int32 frame) const
 {
+	// check if we are still waiting to reach the seekframe,
+	// don't pass the event on to the listeners in that case
+	if (fSeekFrame >= 0 && frame != fSeekFrame)
+		return;
+	fSeekFrame = -1;
+
 	float position = 0.0;
 	double duration = (double)fDuration * fVideoFrameRate / 1000000.0;
 	if (duration > 0)

src/apps/mediaplayer/Controller.h

@@ -174,6 +174,7 @@ private:
 	mutable	bigtime_t			fPosition;
 			bigtime_t			fDuration;
 			float				fVideoFrameRate;
+	mutable	int32				fSeekFrame;
 
 			bool 				fAutoplay;
 	volatile bool				fPauseAtEndOfStream;

src/apps/mediaplayer/media_node_framework/NodeManager.cpp

@@ -67,7 +67,7 @@ NodeManager::~NodeManager()
 status_t
 NodeManager::Init(BRect videoBounds, float videoFrameRate,
 	color_space preferredVideoFormat, int32 loopingMode,
-	bool loopingEnabled, float speed)
+	bool loopingEnabled, float speed, uint32 enabledNodes)
 {
 	// init base class
 	PlaybackManager::Init(videoFrameRate, loopingMode, loopingEnabled, speed);
@@ -83,7 +83,7 @@ NodeManager::Init(BRect videoBounds, float videoFrameRate,
 		fAudioSupplier = CreateAudioSupplier();
 
 	return FormatChanged(videoBounds, videoFrameRate, preferredVideoFormat,
-		true);
+		enabledNodes, true);
 }
 
 // InitCheck
@@ -118,13 +118,16 @@ NodeManager::CleanupNodes()
 // FormatChanged
 status_t
 NodeManager::FormatChanged(BRect videoBounds, float videoFrameRate,
-	color_space preferredVideoFormat, bool force)
+	color_space preferredVideoFormat, uint32 enabledNodes, bool force)
 {
 	TRACE("NodeManager::FormatChanged()\n");
 
 	if (!force && videoBounds == VideoBounds()
 		&& videoFrameRate == FramesPerSecond()) {
 		TRACE("   -> reusing existing nodes\n");
+		// TODO: if enabledNodes would indicate that audio or video
+		// is no longer needed, or, worse yet, suddenly needed when
+		// it wasn't before, then we should not return here!
 		return B_OK;
 	}
 
@@ -139,7 +142,7 @@ NodeManager::FormatChanged(BRect videoBounds, float videoFrameRate,
 
 	SetVideoBounds(videoBounds);
 
-	status_t ret = _SetUpNodes(preferredVideoFormat);
+	status_t ret = _SetUpNodes(preferredVideoFormat, enabledNodes);
 	if (ret == B_OK)
 		_StartNodes();
 	else
@@ -247,7 +250,7 @@ NodeManager::SetPeakListener(BHandler* handler)
 
 // _SetUpNodes
 status_t
-NodeManager::_SetUpNodes(color_space preferredVideoFormat)
+NodeManager::_SetUpNodes(color_space preferredVideoFormat, uint32 enabledNodes)
 {
 	TRACE("NodeManager::_SetUpNodes()\n");
 
@@ -271,7 +274,7 @@ NodeManager::_SetUpNodes(color_space preferredVideoFormat)
 	}
 
 	// setup the video nodes
-	if (fVideoBounds.IsValid()) {
+	if (enabledNodes != AUDIO_ONLY) {
 		fStatus = _SetUpVideoNodes(preferredVideoFormat);
 		if (fStatus != B_OK) {
 			print_error("Error setting up video nodes", fStatus);
@@ -282,11 +285,17 @@ NodeManager::_SetUpNodes(color_space preferredVideoFormat)
 		printf("running without video node\n");
 	
 	// setup the audio nodes
-	fStatus = _SetUpAudioNodes();
-	if (fStatus != B_OK) {
-		print_error("Error setting up audio nodes", fStatus);
-		fMediaRoster->Unlock();
-		return fStatus;
+	if (enabledNodes != VIDEO_ONLY) {
+		fStatus = _SetUpAudioNodes();
+		if (fStatus != B_OK) {
+			print_error("Error setting up audio nodes", fStatus);
+			fMediaRoster->Unlock();
+			return fStatus;
+		}
+fNoAudio = false;
+	} else {
+fNoAudio = true;
+		printf("running without audio node\n");
 	}
 
 	// we're done mocking with the media roster
@@ -589,7 +598,7 @@ status_t
 NodeManager::_StartNodes()
 {
 	status_t status = B_NO_INIT;
-	if (!fMediaRoster || !fAudioProducer)
+	if (!fMediaRoster)
 		return status;
 	// begin mucking with the media roster
 	if (!fMediaRoster->Lock())
@@ -623,10 +632,13 @@ NodeManager::_StartNodes()
 	}
 	initLatency += estimate_max_scheduling_latency();
 
-	bigtime_t audioLatency = 0;
-	status = fMediaRoster->GetLatencyFor(fAudioConnection.producer,
-		&audioLatency);
-	TRACE("audio latency: %Ld\n", audioLatency);
+	if (fAudioProducer) {
+		// TODO: was this supposed to be added to initLatency?!?
+		bigtime_t audioLatency = 0;
+		status = fMediaRoster->GetLatencyFor(fAudioConnection.producer,
+			&audioLatency);
+		TRACE("audio latency: %Ld\n", audioLatency);
+	}
 	
 	BTimeSource* timeSource;
 	if (fVideoProducer) {
@@ -677,11 +689,13 @@ printf("performance time for %lld: %lld\n", real + latency
 		}
 	}
 
-	fAudioProducer->SetRunning(true);
-	status = fMediaRoster->StartNode(fAudioConnection.producer, perf);
-	if (status != B_OK) {
-		print_error("Can't start the audio producer", status);
-		return status;
+	if (fAudioProducer) {
+		fAudioProducer->SetRunning(true);
+		status = fMediaRoster->StartNode(fAudioConnection.producer, perf);
+		if (status != B_OK) {
+			print_error("Can't start the audio producer", status);
+			return status;
+		}
 	}
 
 	fPerformanceTimeBase = perf;

src/apps/mediaplayer/media_node_framework/NodeManager.h

@@ -32,11 +32,18 @@ class NodeManager : public PlaybackManager {
 	virtual	AudioSupplier*		CreateAudioSupplier() = 0;
 
 	// NodeManager
+	enum {
+		AUDIO_AND_VIDEO	= 0,
+		VIDEO_ONLY,
+		AUDIO_ONLY
+	};
+
 			status_t			Init(BRect videoBounds, float videoFrameRate,
 									color_space preferredVideoFormat,
 									int32 loopingMode = LOOPING_ALL,
 									bool loopingEnabled = true,
-									float speed = 1.0);
+									float speed = 1.0,
+									uint32 enabledNodes = AUDIO_AND_VIDEO);
 			status_t			InitCheck();
 								// only call this if the
 								// media_server has died!
@@ -45,6 +52,7 @@ class NodeManager : public PlaybackManager {
 			status_t			FormatChanged(BRect videoBounds,
 									float videoFrameRate,
 									color_space preferredVideoFormat,
+									uint32 enabledNodes = AUDIO_AND_VIDEO,
 									bool force = false);
 	virtual	void				SetPlayMode(int32 mode,
 									bool continuePlaying = true);
@@ -65,7 +73,8 @@ class NodeManager : public PlaybackManager {
 			void				SetPeakListener(BHandler* handler);
 
  private:
-			status_t			_SetUpNodes(color_space preferredVideoFormat);
+			status_t			_SetUpNodes(color_space preferredVideoFormat,
+									uint32 enabledNodes);
 			status_t			_SetUpVideoNodes(
 									color_space preferredVideoFormat);
 			status_t			_SetUpAudioNodes();

src/apps/mediaplayer/media_node_framework/PlaybackManager.cpp

@@ -67,7 +67,8 @@ PlaybackManager::PlaybackManager()
 	  fPerformanceTime(0),
 	  fFrameRate(1.0),
 	  fStopPlayingFrame(-1),
-	  fListeners()
+	  fListeners(),
+	  fNoAudio(false)
 {
 	Run();
 }
@@ -452,8 +453,11 @@ PlaybackManager::SetSpeed(float speed)
 int64
 PlaybackManager::NextFrame() const
 {
+	if (fNoAudio)
+		return FrameForTime(fCurrentVideoTime - 1) + 1;
+
 	return FrameForTime(max((bigtime_t)fCurrentAudioTime,
-							(bigtime_t)fCurrentVideoTime) - 1) + 1;
+		(bigtime_t)fCurrentVideoTime) - 1) + 1;
 }
 
 
@@ -1549,6 +1553,9 @@ PlaybackManager::_UpdateSpeedInfos()
 bigtime_t
 PlaybackManager::_TimeForLastFrame() const
 {
+	if (fNoAudio)
+		return TimeForFrame(FrameForTime(fCurrentVideoTime));
+
 	return TimeForFrame(FrameForTime(min((bigtime_t)fCurrentAudioTime,
 										 (bigtime_t)fCurrentVideoTime)));
 }

src/apps/mediaplayer/media_node_framework/PlaybackManager.h

@@ -228,6 +228,8 @@ public:
 													// disabled: -1
 
 			BList				fListeners;
+ protected:
+ 			bool				fNoAudio;
 };