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|
/*
* SIP Communicator, the OpenSource Java VoIP and Instant Messaging client.
*
* Distributable under LGPL license.
* See terms of license at gnu.org.
*/
package net.java.sip.communicator.impl.neomedia.device;
import java.awt.*;
import java.awt.event.*;
import javax.media.*;
import javax.media.control.*;
import javax.media.format.*;
import javax.media.protocol.*;
import javax.swing.*;
import net.java.sip.communicator.impl.neomedia.*;
import net.java.sip.communicator.impl.neomedia.codec.video.*;
import net.java.sip.communicator.impl.neomedia.codec.video.h264.*;
import net.java.sip.communicator.impl.neomedia.transform.*;
import net.java.sip.communicator.impl.neomedia.videoflip.*;
import net.java.sip.communicator.service.neomedia.*;
import net.java.sip.communicator.service.neomedia.event.*;
import net.java.sip.communicator.service.resources.*;
import net.java.sip.communicator.util.*;
/**
* Extends <tt>MediaDeviceSession</tt> to add video-specific functionality.
*
* @author Lubomir Marinov
* @author Sebastien Vincent
*/
public class VideoMediaDeviceSession
extends MediaDeviceSession
{
/**
* The <tt>Logger</tt> used by the <tt>VideoMediaDeviceSession</tt> class
* and its instances for logging output.
*/
private static final Logger logger
= Logger.getLogger(VideoMediaDeviceSession.class);
/**
* The image ID of the icon which is to be displayed as the local visual
* <tt>Component</tt> depicting the streaming of the desktop of the local
* peer to the remote peer.
*/
private static final String DESKTOP_STREAMING_ICON
= "impl.media.DESKTOP_STREAMING_ICON";
/**
* Local <tt>Player</tt> for the local video.
*/
private Processor localPlayer = null;
/**
* Use or not RTCP feedback Picture Loss Indication.
*/
private boolean usePLI = false;
/**
* Output size of the stream.
*
* It is used to specify a different size (generally lesser ones)
* than the capture device provides. Typically one usage can be
* in desktop streaming/sharing session when sender desktop is bigger
* than remote ones.
*/
private Dimension outputSize;
/**
* The <tt>RTPConnector</tt>.
*/
private RTPTransformConnector rtpConnector = null;
/**
* Local SSRC.
*/
private long localSSRC = -1;
/**
* Remote SSRC.
*/
private long remoteSSRC = -1;
/**
* The <tt>SwScaler</tt> inserted into the codec chain of the
* <tt>Player</tt> rendering the media received from the remote peer and
* enabling the explicit setting of the video size.
*/
private SwScaler playerScaler;
/**
* The facility which aids this instance in managing a list of
* <tt>VideoListener</tt>s and firing <tt>VideoEvent</tt>s to them.
*/
private final VideoNotifierSupport videoNotifierSupport
= new VideoNotifierSupport(this);
/**
* Initializes a new <tt>VideoMediaDeviceSession</tt> instance which is to
* represent the work of a <tt>MediaStream</tt> with a specific video
* <tt>MediaDevice</tt>.
*
* @param device the video <tt>MediaDevice</tt> the use of which by a
* <tt>MediaStream</tt> is to be represented by the new instance
*/
public VideoMediaDeviceSession(AbstractMediaDevice device)
{
super(device);
}
/**
* Adds a specific <tt>VideoListener</tt> to this instance in order to
* receive notifications when visual/video <tt>Component</tt>s are being
* added and removed.
* <p>
* Adding a listener which has already been added does nothing i.e. it is
* not added more than once and thus does not receive one and the same
* <tt>VideoEvent</tt> multiple times.
* </p>
*
* @param listener the <tt>VideoListener</tt> to be notified when
* visual/video <tt>Component</tt>s are being added or removed in this
* instance
*/
public void addVideoListener(VideoListener listener)
{
videoNotifierSupport.addVideoListener(listener);
}
/**
* Creates the <tt>DataSource</tt> that this instance is to read captured
* media from.
*
* @return the <tt>DataSource</tt> that this instance is to read captured
* media from
*/
@Override
protected DataSource createCaptureDevice()
{
/*
* Create our DataSource as SourceCloneable so we can use it to both
* display local video and stream to remote peer.
*/
DataSource captureDevice = super.createCaptureDevice();
if (captureDevice != null)
{
MediaLocator locator = captureDevice.getLocator();
String protocol = (locator == null) ? null : locator.getProtocol();
/*
* We'll probably have the frame size, frame size and such quality
* and/or bandwidth preferences controlled by the user (e.g. through
* a dumbed down present scale). But for now we try to make sure
* that our codecs are as generic as possible and we select the
* default preset here.
*/
if (ImageStreamingAuto.LOCATOR_PROTOCOL.equals(protocol))
{
/*
* It is not clear at this time what the default frame rate for
* desktop streaming should be but at least we establish that it
* is good to have a control from the outside rather than have a
* hardcoded value in the imgstreaming CaptureDevice.
*/
FrameRateControl frameRateControl
= (FrameRateControl)
captureDevice.getControl(
FrameRateControl.class.getName());
float defaultFrameRate = 10;
if ((frameRateControl != null)
&& (defaultFrameRate
<= frameRateControl.getMaxSupportedFrameRate()))
frameRateControl.setFrameRate(defaultFrameRate);
}
else
{
VideoMediaStreamImpl.selectVideoSize(captureDevice, 640, 480);
}
/*
* FIXME PullBufferDataSource does not seem to be correctly cloned
* by JMF.
*/
if (!(captureDevice instanceof PullBufferDataSource))
{
DataSource cloneableDataSource =
Manager.createCloneableDataSource(captureDevice);
if (cloneableDataSource != null)
captureDevice = cloneableDataSource;
}
}
return captureDevice;
}
/**
* Asserts that a specific <tt>MediaDevice</tt> is acceptable to be set as
* the <tt>MediaDevice</tt> of this instance. Makes sure that its
* <tt>MediaType</tt> is {@link MediaType#VIDEO}.
*
* @param device the <tt>MediaDevice</tt> to be checked for suitability to
* become the <tt>MediaDevice</tt> of this instance
* @see MediaDeviceSession#checkDevice(AbstractMediaDevice)
*/
@Override
protected void checkDevice(AbstractMediaDevice device)
{
if (!MediaType.VIDEO.equals(device.getMediaType()))
throw new IllegalArgumentException("device");
}
/**
* Releases the resources allocated by a specific <tt>Player</tt> in the
* course of its execution and prepares it to be garbage collected. If the
* specified <tt>Player</tt> is rendering video, notifies the
* <tt>VideoListener</tt>s of this instance that its visual
* <tt>Component</tt> is to no longer be used by firing a
* {@link VideoEvent#VIDEO_REMOVED} <tt>VideoEvent</tt>.
*
* @param player the <tt>Player</tt> to dispose of
* @see MediaDeviceSession#disposePlayer(Player)
*/
@Override
protected void disposePlayer(Player player)
{
/*
* The player is being disposed so let the (interested) listeners know
* its Player#getVisualComponent() (if any) should be released.
*/
Component visualComponent = getVisualComponent(player);
super.disposePlayer(player);
if (visualComponent != null)
{
fireVideoEvent(
VideoEvent.VIDEO_REMOVED,
visualComponent,
VideoEvent.REMOTE);
}
}
/**
* Notifies the <tt>VideoListener</tt>s registered with this instance about
* a specific type of change in the availability of a specific visual
* <tt>Component</tt> depicting video.
*
* @param type the type of change as defined by <tt>VideoEvent</tt> in the
* availability of the specified visual <tt>Component</tt> depicting video
* @param visualComponent the visual <tt>Component</tt> depicting video
* which has been added or removed in this instance
* @param origin {@link VideoEvent#LOCAL} if the origin of the video is
* local (e.g. it is being locally captured); {@link VideoEvent#REMOTE} if
* the origin of the video is remote (e.g. a remote peer is streaming it)
* @return <tt>true</tt> if this event and, more specifically, the visual
* <tt>Component</tt> it describes have been consumed and should be
* considered owned, referenced (which is important because
* <tt>Component</tt>s belong to a single <tt>Container</tt> at a time);
* otherwise, <tt>false</tt>
*/
protected boolean fireVideoEvent(
int type,
Component visualComponent,
int origin)
{
if (logger.isTraceEnabled())
{
logger.trace(
"Firing VideoEvent with type "
+ VideoEvent.typeToString(type)
+ " and origin "
+ VideoEvent.originToString(origin));
}
return
videoNotifierSupport.fireVideoEvent(type, visualComponent, origin);
}
/**
* Notifies the <tt>VideoListener</tt>s registered with this instance about
* a specific <tt>VideoEvent</tt>.
*
* @param videoEvent the <tt>VideoEvent</tt> to be fired to the
* <tt>VideoListener</tt>s registered with this instance
*/
protected void fireVideoEvent(VideoEvent videoEvent)
{
videoNotifierSupport.fireVideoEvent(videoEvent);
}
/**
* Gets the JMF <tt>Format</tt> of the <tt>captureDevice</tt> of this
* <tt>MediaDeviceSession</tt>.
*
* @return the JMF <tt>Format</tt> of the <tt>captureDevice</tt> of this
* <tt>MediaDeviceSession</tt>
*/
private Format getCaptureDeviceFormat()
{
DataSource captureDevice = getCaptureDevice();
if (captureDevice != null)
{
FormatControl[] formatControls = null;
if (captureDevice instanceof CaptureDevice)
{
formatControls
= ((CaptureDevice) captureDevice).getFormatControls();
}
if ((formatControls == null) || (formatControls.length == 0))
{
FormatControl formatControl
= (FormatControl)
captureDevice.getControl(FormatControl.class.getName());
if (formatControl != null)
formatControls = new FormatControl[] { formatControl };
}
if (formatControls != null)
{
for (FormatControl formatControl : formatControls)
{
Format format = formatControl.getFormat();
if (format != null)
return format;
}
}
}
return null;
}
/**
* Get the local <tt>Player</tt> if it exists,
* create it otherwise
* @return local <tt>Player</tt>
*/
private Player getLocalPlayer()
{
DataSource captureDevice = getCaptureDevice();
DataSource dataSource
= (captureDevice instanceof SourceCloneable)
? ((SourceCloneable) captureDevice).createClone()
: null;
/* create local player */
if (localPlayer == null && dataSource != null)
{
Exception excpt = null;
try
{
localPlayer = Manager.createProcessor(dataSource);
}
catch (Exception ex)
{
excpt = ex;
}
if(excpt == null)
{
localPlayer.addControllerListener(new ControllerListener()
{
public void controllerUpdate(ControllerEvent event)
{
controllerUpdateForCreateLocalVisualComponent(event);
}
});
localPlayer.configure();
}
else
{
logger.error("Failed to connect to "
+ MediaStreamImpl.toString(dataSource),
excpt);
}
}
return localPlayer;
}
/**
* Gets notified about <tt>ControllerEvent</tt>s generated by
* {@link #localPlayer}.
*
* @param controllerEvent the <tt>ControllerEvent</tt> specifying the
* <tt>Controller</tt> which is the source of the event and the very type of
* the event
*/
private void controllerUpdateForCreateLocalVisualComponent(
ControllerEvent controllerEvent)
{
if (controllerEvent instanceof ConfigureCompleteEvent)
{
Processor player = (Processor)controllerEvent.getSourceController();
/*
* Use SwScaler for the scaling since it produces an image with
* better quality and add the "flip" effect to the video.
*/
TrackControl[] trackControls = player.getTrackControls();
if ((trackControls != null) && (trackControls.length != 0))
try
{
for (TrackControl trackControl : trackControls)
{
VideoFlipEffect flipEffect = new VideoFlipEffect();
SwScaler scaler = new SwScaler();
trackControl.setCodecChain(
new Codec[] {flipEffect, scaler});
break;
}
}
catch (UnsupportedPlugInException upiex)
{
logger.warn(
"Failed to add SwScaler/VideoFlipEffect to " +
"codec chain", upiex);
}
// Turn the Processor into a Player.
try
{
player.setContentDescriptor(null);
}
catch (NotConfiguredError nce)
{
logger.error(
"Failed to set ContentDescriptor of Processor",
nce);
}
player.realize();
}
else if (controllerEvent instanceof RealizeCompleteEvent)
{
Player player = (Player) controllerEvent.getSourceController();
Component visualComponent = player.getVisualComponent();
if (visualComponent != null)
{
if (fireVideoEvent(
VideoEvent.VIDEO_ADDED,
visualComponent,
VideoEvent.LOCAL))
{
localVisualComponentConsumed(visualComponent, player);
}
else
{
// No listener interested in our event so free resources.
if(localPlayer == player)
localPlayer = null;
player.stop();
player.deallocate();
player.close();
}
}
player.start();
}
}
/**
* Creates the visual <tt>Component</tt> depicting the video being streamed
* from the local peer to the remote peer.
*
* @return the visual <tt>Component</tt> depicting the video being streamed
* from the local peer to the remote peer if it was immediately created or
* <tt>null</tt> if it was not immediately created and it is to be delivered
* to the currently registered <tt>VideoListener</tt>s in a
* <tt>VideoEvent</tt> with type {@link VideoEvent#VIDEO_ADDED} and origin
* {@link VideoEvent#LOCAL}
*/
public Component createLocalVisualComponent()
{
/*
* Displaying the currently streamed desktop is perceived as unnecessary
* because the user sees the whole desktop anyway. Instead, a static
* image will be presented.
*/
DataSource captureDevice = getCaptureDevice();
if (captureDevice != null)
{
MediaLocator locator = captureDevice.getLocator();
if ((locator != null)
&& ImageStreamingAuto.LOCATOR_PROTOCOL
.equals(locator.getProtocol()))
return createLocalVisualComponentForDesktopStreaming();
}
/*
* The visual Component to depict the video being streamed from the
* local peer to the remote peer is created by JMF and its Player so it
* is likely to take noticeably long time. Consequently, we will deliver
* it to the currently registered VideoListeners in a VideoEvent after
* returning from the call.
*/
getLocalPlayer();
return null;
}
/**
* Creates the visual <tt>Component</tt> to depict the streaming of the
* desktop of the local peer to the remote peer.
*
* @return the visual <tt>Component</tt> to depict the streaming of the
* desktop of the local peer to the remote peer
*/
private Component createLocalVisualComponentForDesktopStreaming()
{
ResourceManagementService resources = NeomediaActivator.getResources();
ImageIcon icon = resources.getImage(DESKTOP_STREAMING_ICON);
Canvas canvas;
if (icon == null)
canvas = null;
else
{
final Image img = icon.getImage();
canvas = new Canvas()
{
public static final long serialVersionUID = 0L;
@Override
public void paint(Graphics g)
{
int width = getWidth();
int height = getHeight();
g.setColor(Color.BLACK);
g.fillRect(0, 0, width, height);
int imgWidth = img.getWidth(this);
int imgHeight = img.getHeight(this);
if ((imgWidth < 1) || (imgHeight < 1))
return;
boolean scale = false;
float scaleFactor = 1;
if (imgWidth > width)
{
scale = true;
scaleFactor = width / (float) imgWidth;
}
if (imgHeight > height)
{
scale = true;
scaleFactor
= Math.min(scaleFactor, height / (float) imgHeight);
}
int dstWidth;
int dstHeight;
if (scale)
{
dstWidth = Math.round(imgWidth * scaleFactor);
dstHeight = Math.round(imgHeight * scaleFactor);
}
else
{
dstWidth = imgWidth;
dstHeight = imgHeight;
}
int dstX = (width - dstWidth) / 2;
int dstY = (height - dstWidth) / 2;
g.drawImage(
img,
dstX, dstY, dstX + dstWidth, dstY + dstHeight,
0, 0, imgWidth, imgHeight,
this);
}
};
Dimension iconSize
= new Dimension(icon.getIconWidth(), icon.getIconHeight());
canvas.setMaximumSize(iconSize);
canvas.setPreferredSize(iconSize);
/*
* Set a clue so that we can recognize it if it gets received as an
* argument to #disposeLocalVisualComponent().
*/
canvas.setName(DESKTOP_STREAMING_ICON);
fireVideoEvent(VideoEvent.VIDEO_ADDED, canvas, VideoEvent.LOCAL);
}
return canvas;
}
/**
* Disposes the local visual <tt>Component</tt> of the local peer.
*
* @param component the local visual <tt>Component</tt> of the local peer to
* dispose of
*/
public void disposeLocalVisualComponent(Component component)
{
/*
* Desktop streaming does not use a Player but a Canvas with its name
* equals to the value of DESKTOP_STREAMING_ICON.
*/
if ((component != null)
&& DESKTOP_STREAMING_ICON.equals(component.getName()))
{
fireVideoEvent(
VideoEvent.VIDEO_REMOVED,
component,
VideoEvent.LOCAL);
return;
}
Player localPlayer = this.localPlayer;
if (localPlayer != null)
disposeLocalPlayer(localPlayer);
}
/**
* Releases the resources allocated by a specific local <tt>Player</tt> in
* the course of its execution and prepares it to be garbage collected. If
* the specified <tt>Player</tt> is rendering video, notifies the
* <tt>VideoListener</tt>s of this instance that its visual
* <tt>Component</tt> is to no longer be used by firing a
* {@link VideoEvent#VIDEO_REMOVED} <tt>VideoEvent</tt>.
*
* @param player the <tt>Player</tt> to dispose of
* @see MediaDeviceSession#disposePlayer(Player)
*/
protected void disposeLocalPlayer(Player player)
{
/*
* The player is being disposed so let the (interested) listeners know
* its Player#getVisualComponent() (if any) should be released.
*/
Component visualComponent = getVisualComponent(player);
if(localPlayer == player)
localPlayer = null;
player.stop();
player.deallocate();
player.close();
if (visualComponent != null)
fireVideoEvent(
VideoEvent.VIDEO_REMOVED,
visualComponent,
VideoEvent.LOCAL);
}
/**
* Returns the visual <tt>Component</tt> where video from the remote peer
* is being rendered or <tt>null</tt> if no video is currently rendered.
*
* @return the visual <tt>Component</tt> where video from the remote peer
* is being rendered or <tt>null</tt> if no video is currently rendered
*/
public Component getVisualComponent()
{
Component visualComponent = null;
/*
* When we know (through means such as SDP) that we don't want to
* receive, it doesn't make sense to wait for the remote peer to
* acknowledge our desire. So we'll just stop depicting the video of the
* remote peer regarldess of whether it stops or continues its sending.
*/
if (getStartedDirection().allowsReceiving())
{
Player player = getPlayer();
if (player != null)
visualComponent = getVisualComponent(player);
}
return visualComponent;
}
/**
* Gets the visual <tt>Component</tt> of a specific <tt>Player</tt> if it
* has one and ignores the failure to access it if the specified
* <tt>Player</tt> is unrealized.
*
* @param player the <tt>Player</tt> to get the visual <tt>Component</tt> of
* if it has one
* @return the visual <tt>Component</tt> of the specified <tt>Player</tt> if
* it has one; <tt>null</tt> if the specified <tt>Player</tt> does not have
* a visual <tt>Component</tt> or the <tt>Player</tt> is unrealized
*/
private static Component getVisualComponent(Player player)
{
Component visualComponent;
try
{
visualComponent = player.getVisualComponent();
}
catch (NotRealizedError e)
{
visualComponent = null;
if (logger.isDebugEnabled())
logger
.debug(
"Called Player#getVisualComponent() "
+ "on Unrealized player "
+ player,
e);
}
return visualComponent;
}
/**
* Notifies this <tt>VideoMediaDeviceSession</tt> that a specific visual
* <tt>Component</tt> which depicts video streaming from the local peer to
* the remote peer and which has been created by a specific <tt>Player</tt>
* has been delivered to the registered <tt>VideoListener</tt>s and at least
* one of them has consumed it.
*
* @param visualComponent the visual <tt>Component</tt> depicting local
* video which has been consumed by the registered <tt>VideoListener</tt>s
* @param player the local <tt>Player</tt> which has created the specified
* visual <tt>Component</tt>
*/
private void localVisualComponentConsumed(
Component visualComponent,
Player player)
{
}
/**
* Notifies this instance that a specific <tt>Player</tt> of remote content
* has generated a <tt>ConfigureCompleteEvent</tt>.
*
* @param player the <tt>Player</tt> which is the source of a
* <tt>ConfigureCompleteEvent</tt>
* @see MediaDeviceSession#playerConfigureComplete(Processor)
*/
@Override
protected void playerConfigureComplete(final Processor player)
{
super.playerConfigureComplete(player);
TrackControl[] trackControls = player.getTrackControls();
SwScaler playerScaler = null;
if ((trackControls != null) && (trackControls.length != 0))
{
try
{
for (TrackControl trackControl : trackControls)
{
/*
* Since SwScaler will scale any input size into the
* configured output size, we may never get SizeChangeEvent
* from the player. We'll generate it ourselves then.
*/
playerScaler = new PlayerScaler(player);
/*
* For H.264, we will use RTCP feedback. For example, to
* tell the sender that we've missed a frame.
*/
if(format.getEncoding().equals("h264/rtp") && usePLI)
{
DePacketizer depack = new DePacketizer();
depack.setRtcpFeedbackPLI(usePLI);
try
{
depack.setConnector(rtpConnector.
getControlOutputStream());
}
catch(Exception e)
{
logger.error("Error cannot get RTCP output stream",
e);
}
depack.setSSRC(localSSRC, remoteSSRC);
trackControl.setCodecChain(new Codec[] {
depack, playerScaler});
}
else
{
trackControl.setCodecChain(new Codec[] {playerScaler});
}
break;
}
}
catch (UnsupportedPlugInException upiex)
{
logger.error("Failed to add SwScaler to codec chain", upiex);
playerScaler = null;
}
}
this.playerScaler = playerScaler;
}
/**
* Gets notified about <tt>ControllerEvent</tt>s generated by a specific
* <tt>Player</tt> of remote content.
*
* @param event the <tt>ControllerEvent</tt> specifying the
* <tt>Controller</tt> which is the source of the event and the very type of
* the event
* @see MediaDeviceSession#playerControllerUpdate(ControllerEvent)
*/
@Override
protected void playerControllerUpdate(ControllerEvent event)
{
super.playerControllerUpdate(event);
/*
* If SwScaler is in the chain and it forces a specific size of the
* output, the SizeChangeEvents of the Player do not really notify about
* changes in the size of the input. Besides, playerScaler will take
* care of the events in such a case.
*/
if ((event instanceof SizeChangeEvent)
&& ((playerScaler == null)
|| (playerScaler.getOutputSize() == null)))
{
SizeChangeEvent sizeChangeEvent = (SizeChangeEvent) event;
playerSizeChange(
sizeChangeEvent.getSourceController(),
sizeChangeEvent.getWidth(),
sizeChangeEvent.getHeight());
}
}
/**
* Notifies this instance that a specific <tt>Player</tt> of remote content
* has generated a <tt>RealizeCompleteEvent</tt>.
*
* @param player the <tt>Player</tt> which is the source of a
* <tt>RealizeCompleteEvent</tt>.
* @see MediaDeviceSession#playerRealizeComplete(Processor)
*/
@Override
protected void playerRealizeComplete(final Processor player)
{
super.playerRealizeComplete(player);
Component visualComponent = getVisualComponent(player);
if (visualComponent != null)
{
/*
* SwScaler seems to be very good at scaling with respect to image
* quality so use it for the scaling in the player replacing the
* scaling it does upon rendering.
*/
visualComponent.addComponentListener(new ComponentAdapter()
{
@Override
public void componentResized(ComponentEvent e)
{
playerVisualComponentResized(player, e);
}
});
fireVideoEvent(
VideoEvent.VIDEO_ADDED,
visualComponent,
VideoEvent.REMOTE);
}
}
/**
* Notifies this instance that a specific <tt>Player</tt> of remote content
* has generated a <tt>SizeChangeEvent</tt>.
*
* @param sourceController the <tt>Player</tt> which is the source of the
* event
* @param width the width reported in the event
* @param height the height reported in the event
* @see SizeChangeEvent
*/
protected void playerSizeChange(
final Controller sourceController,
final int width,
final int height)
{
/*
* Invoking anything that is likely to change the UI in the Player
* thread seems like a performance hit so bring it into the event
* thread.
*/
if (!SwingUtilities.isEventDispatchThread())
{
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
playerSizeChange(sourceController, width, height);
}
});
return;
}
Player player = (Player) sourceController;
Component visualComponent = getVisualComponent(player);
if (visualComponent != null)
{
fireVideoEvent(
new SizeChangeVideoEvent(
this,
visualComponent,
SizeChangeVideoEvent.REMOTE,
width,
height));
}
}
/**
* Notifies this instance that the visual <tt>Component</tt> of a
* <tt>Player</tt> rendering remote content has been resized.
*
* @param player the <tt>Player</tt> rendering remote content the visual
* <tt>Component</tt> of which has been resized
* @param e a <tt>ComponentEvent</tt> which specifies the resized
* <tt>Component</tt>
*/
private void playerVisualComponentResized(
Processor player,
ComponentEvent e)
{
if (playerScaler == null)
return;
Component visualComponent = e.getComponent();
/*
* When the visualComponent is not in an UI hierarchy, its size isn't
* expected to be representative of what the user is seeing.
*/
if (visualComponent.getParent() == null)
return;
Dimension outputSize = visualComponent.getSize();
float outputWidth = outputSize.width;
float outputHeight = outputSize.height;
if ((outputWidth < 1) || (outputHeight < 1))
return;
/*
* The size of the output video will be calculated so that it fits into
* the visualComponent and the video aspect ratio is preserved. The
* presumption here is that the inputFormat holds the video size with
* the correct aspect ratio.
*/
Format inputFormat = playerScaler.getInputFormat();
if (inputFormat == null)
return;
Dimension inputSize = ((VideoFormat) inputFormat).getSize();
if (inputSize == null)
return;
int inputWidth = inputSize.width;
int inputHeight = inputSize.height;
if ((inputWidth < 1) || (inputHeight < 1))
return;
// Preserve the aspect ratio.
outputHeight = outputWidth * inputHeight / (float) inputWidth;
// Fit the output video into the visualComponent.
boolean scale = false;
float widthRatio;
float heightRatio;
if (Math.abs(outputWidth - inputWidth) < 1)
{
scale = true;
widthRatio = outputWidth / (float) inputWidth;
}
else
widthRatio = 1;
if (Math.abs(outputHeight - inputHeight) < 1)
{
scale = true;
heightRatio = outputHeight / (float) inputHeight;
}
else
heightRatio = 1;
if (scale)
{
float scaleFactor = Math.min(widthRatio, heightRatio);
outputWidth = inputWidth * scaleFactor;
outputHeight = inputHeight * scaleFactor;
}
outputSize.width = (int) outputWidth;
outputSize.height = (int) outputHeight;
Dimension playerScalerOutputSize = playerScaler.getOutputSize();
if (playerScalerOutputSize == null)
playerScaler.setOutputSize(outputSize);
else
{
/*
* If we are not going to make much of a change, do not even bother
* because any scaling in the Renderer will not be noticeable
* anyway.
*/
int outputWidthDelta
= outputSize.width - playerScalerOutputSize.width;
int outputHeightDelta
= outputSize.height - playerScalerOutputSize.height;
if ((outputWidthDelta < -1)
|| (outputWidthDelta > 1)
|| (outputHeightDelta < -1)
|| (outputHeightDelta > 1))
{
playerScaler.setOutputSize(outputSize);
}
}
}
/**
* Removes a specific <tt>VideoListener</tt> from this instance in order to
* have to no longer receive notifications when visual/video
* <tt>Component</tt>s are being added and removed.
*
* @param listener the <tt>VideoListener</tt> to no longer be notified when
* visual/video <tt>Component</tt>s are being added or removed in this
* instance
*/
public void removeVideoListener(VideoListener listener)
{
videoNotifierSupport.removeVideoListener(listener);
}
/**
* Use or not RTCP feedback Picture Loss Indication.
*
* @param use use or not PLI
*/
public void setRtcpFeedbackPLI(boolean use)
{
usePLI = use;
}
/**
* Sets the size of the output video.
*
* @param size the size of the output video
*/
public void setOutputSize(Dimension size)
{
outputSize = size;
}
/**
* Sets the <tt>RTPConnector</tt> that will be used to
* initialize some codec for RTCP feedback.
*
* @param rtpConnector the RTP connector
*/
public void setConnector(RTPTransformConnector rtpConnector)
{
this.rtpConnector = rtpConnector;
}
/**
* Set the local SSRC.
*
* @param localSSRC local SSRC
*/
public void setLocalSSRC(long localSSRC)
{
this.localSSRC = localSSRC;
}
/**
* Set the remote SSRC.
*
* @param remoteSSRC remote SSRC
*/
public void setRemoteSSRC(long remoteSSRC)
{
this.remoteSSRC = remoteSSRC;
}
/**
* Sets the JMF <tt>Format</tt> in which a specific <tt>Processor</tt>
* producing media to be streamed to the remote peer is to output.
*
* @param processor the <tt>Processor</tt> to set the output <tt>Format</tt>
* of
* @param format the JMF <tt>Format</tt> to set to <tt>processor</tt>
* @see MediaDeviceSession#setProcessorFormat(Processor, Format)
*/
@Override
protected void setProcessorFormat(Processor processor, Format format)
{
if(format.getEncoding().equals("h263-1998/rtp"))
{
/* if no output size has been defined, it means that no SDP's fmtp
* has been found with QCIF, CIF, VGA or CUSTOM elements
*
* Let's choose QCIF size (176x144)
*/
if(outputSize == null)
{
outputSize = new Dimension(176, 144);
}
}
/*
* Add a size in the output format. As VideoFormat has no setter, we
* recreate the object. Also check whether capture device can output
* such a size.
*/
if((outputSize != null)
&& (outputSize.width > 0)
&& (outputSize.height > 0))
{
Dimension deviceSize
= ((VideoFormat) getCaptureDeviceFormat()).getSize();
if ((deviceSize != null)
&& ((deviceSize.width > outputSize.width)
|| (deviceSize.height > outputSize.height)))
{
VideoFormat videoFormat = (VideoFormat) format;
format
= new VideoFormat(
videoFormat.getEncoding(),
outputSize,
videoFormat.getMaxDataLength(),
videoFormat.getDataType(),
videoFormat.getFrameRate());
}
else
outputSize = null;
}
else
outputSize = null;
super.setProcessorFormat(processor, format);
}
/**
* Sets the JMF <tt>Format</tt> of a specific <tt>TrackControl</tt> of the
* <tt>Processor</tt> which produces the media to be streamed by this
* <tt>MediaDeviceSession</tt> to the remote peer. Allows extenders to
* override the set procedure and to detect when the JMF <tt>Format</tt> of
* the specified <tt>TrackControl</tt> changes.
*
* @param trackControl the <tt>TrackControl</tt> to set the JMF
* <tt>Format</tt> of
* @param format the JMF <tt>Format</tt> to be set on the specified
* <tt>TrackControl</tt>
* @return the JMF <tt>Format</tt> set on <tt>TrackControl</tt> after the
* attempt to set the specified <tt>format</tt> or <tt>null</tt> if the
* specified <tt>format</tt> was found to be incompatible with
* <tt>trackControl</tt>
* @see MediaDeviceSession#setProcessorFormat(TrackControl, Format)
*/
@Override
protected Format setProcessorFormat(
TrackControl trackControl,
Format format)
{
JNIEncoder encoder = null;
SwScaler scaler = null;
int codecCount = 0;
/* For H.264 we will monitor RTCP feedback. For example, if we receive a
* PLI/FIR message, we will send a keyframe.
*/
if(format.getEncoding().equals("h264/rtp") && usePLI)
{
encoder = new JNIEncoder();
// The H.264 encoder needs to be notified of RTCP feedback message.
try
{
((ControlTransformInputStream)
rtpConnector.getControlInputStream())
.addRTCPFeedbackListener(encoder);
}
catch(Exception e)
{
logger.error("Error cannot get RTCP input stream", e);
}
codecCount++;
}
if(outputSize != null)
{
/* We have been explicitly told to use a specified output size so
* create a custom SwScaler that will scale and convert color spaces
* in one call.
*/
scaler = new SwScaler();
scaler.setOutputSize(outputSize);
codecCount++;
}
Codec[] codecs = new Codec[codecCount];
codecCount = 0;
if(scaler != null)
codecs[codecCount++] = scaler;
if(encoder != null)
codecs[codecCount++] = encoder;
if (codecCount != 0)
{
/* Add our custom SwScaler and possibly RTCP aware codec to the
* codec chain so that it will be used instead of default.
*/
try
{
trackControl.setCodecChain(codecs);
}
catch(UnsupportedPlugInException upiex)
{
logger.error(
"Failed to add SwScaler/JNIEncoder to codec chain",
upiex);
}
}
return super.setProcessorFormat(trackControl, format);
}
/**
* Notifies this instance that the value of its <tt>startedDirection</tt>
* property has changed from a specific <tt>oldValue</tt> to a specific
* <tt>newValue</tt>.
*
* @param oldValue the <tt>MediaDirection</tt> which used to be the value of
* the <tt>startedDirection</tt> property of this instance
* @param newValue the <tt>MediaDirection</tt> which is the value of the
* <tt>startedDirection</tt> property of this instance
*/
@Override
protected void startedDirectionChanged(
MediaDirection oldValue,
MediaDirection newValue)
{
super.startedDirectionChanged(oldValue, newValue);
Player player = getPlayer();
if (player == null)
return;
int state = player.getState();
/*
* The visual Component of a Player is safe to access and, respectively,
* report through a VideoEvent only when the Player is Realized.
*/
if (state < Player.Realized)
return;
if (newValue.allowsReceiving())
{
if (state != Player.Started)
{
player.start();
Component visualComponent = getVisualComponent(player);
if (visualComponent != null)
{
fireVideoEvent(
VideoEvent.VIDEO_ADDED,
visualComponent,
VideoEvent.REMOTE);
}
}
}
else if (state > Processor.Configured)
{
Component visualComponent = getVisualComponent(player);
player.stop();
if (visualComponent != null)
{
fireVideoEvent(
VideoEvent.VIDEO_REMOVED,
visualComponent,
VideoEvent.REMOTE);
}
}
}
/**
* Extends <tt>SwScaler</tt> in order to provide scaling with high quality
* to a specific <tt>Player</tt> of remote video.
*/
private class PlayerScaler
extends SwScaler
{
/**
* The last size reported in the form of a <tt>SizeChangeEvent</tt>.
*/
private Dimension lastSize;
/**
* The <tt>Player</tt> into the codec chain of which this
* <tt>SwScaler</tt> is set.
*/
private final Player player;
/**
* Initializes a new <tt>PlayerScaler</tt> instance which is to provide
* scaling with high quality to a specific <tt>Player</tt> of remote
* video.
*
* @param player the <tt>Player</tt> of remote video into the codec
* chain of which the new instance is to be set
*/
public PlayerScaler(Player player)
{
super(true);
this.player = player;
}
/**
* Determines when the input video sizes changes and reports it as a
* <tt>SizeChangeVideoEvent</tt> because <tt>Player</tt> is unable to
* do it when this <tt>SwScaler</tt> is scaling to a specific
* <tt>outputSize</tt>.
*
* @param input input buffer
* @param output output buffer
* @return the native <tt>PaSampleFormat</tt>
* @see SwScaler#process(Buffer, Buffer)
*/
@Override
public int process(Buffer input, Buffer output)
{
int result = super.process(input, output);
if (result == BUFFER_PROCESSED_OK)
{
Format inputFormat = getInputFormat();
if (inputFormat != null)
{
Dimension size = ((VideoFormat) inputFormat).getSize();
if ((size != null)
&& ((lastSize == null) || !lastSize.equals(size)))
{
lastSize = size;
playerSizeChange(
player,
lastSize.width, lastSize.height);
}
}
}
return result;
}
/**
* Ensures that this <tt>SwScaler</tt> preserves the aspect ratio of its
* input video when scaling.
*
* @param inputFormat format to set
* @return format
* @see SwScaler#setInputFormat(Format)
*/
@Override
public Format setInputFormat(Format inputFormat)
{
inputFormat = super.setInputFormat(inputFormat);
if (inputFormat instanceof VideoFormat)
{
Dimension inputSize = ((VideoFormat) inputFormat).getSize();
if ((inputSize != null) && (inputSize.width > 0))
{
Dimension outputSize = getOutputSize();
if ((outputSize != null) && (outputSize.width > 0))
{
int outputHeight
= (int)
(outputSize.width
* inputSize.height
/ (float) inputSize.width);
int outputHeightDelta
= outputHeight - outputSize.height;
if ((outputHeightDelta < -1) || (outputHeightDelta > 1))
{
outputSize.height = outputHeight;
setOutputSize(outputSize);
}
}
}
}
return inputFormat;
}
}
}
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