javauis/mmapi_qt/baseline/javasrc/com/nokia/microedition/media/animation/FramePositioningControl.java
--- a/javauis/mmapi_qt/baseline/javasrc/com/nokia/microedition/media/animation/FramePositioningControl.java Fri May 14 15:47:24 2010 +0300
+++ b/javauis/mmapi_qt/baseline/javasrc/com/nokia/microedition/media/animation/FramePositioningControl.java Thu May 27 12:49:31 2010 +0300
@@ -1,5 +1,5 @@
/*
-* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
@@ -11,38 +11,38 @@
*
* Contributors:
*
-* Description:
+* Description: FramePositioningControl
*
*/
-/**
- *
- */
package com.nokia.microedition.media.animation;
+import javax.microedition.media.MediaException;
import javax.microedition.media.Player;
import org.eclipse.swt.graphics.ImageData;
import com.nokia.microedition.media.control.ControlImpl;
+import com.nokia.mj.impl.utils.Logger;
-/**
- * @author d35kumar
- *
- */
+
public class FramePositioningControl extends ControlImpl implements
javax.microedition.media.control.FramePositioningControl {
- ImageData[] iImagedata;
+ private ImageData[] iImagedata;
+
/**
- *
+ * Constructor of this Control
+ * This constructor should be accessible only in this package, that's why it is being
+ * declared as package protected.
*/
FramePositioningControl(Player aPlayer) {
iPlayer=aPlayer;
iImagedata=((AnimationPlayer)iPlayer).getImageData();
}
- /* (non-Javadoc)
- * @see javax.microedition.media.control.FramePositioningControl#mapFrameToTime(int)
+ /**
+ * Converts the given frame number to the corresponding media time.
+ * The method only performs the calculations. It does not position the media to the given frame.
*/
public long mapFrameToTime(int aFrameNumber) {
checkState();
@@ -59,8 +59,13 @@
return time*10000;
}
- /* (non-Javadoc)
- * @see javax.microedition.media.control.FramePositioningControl#mapTimeToFrame(long)
+ /**
+ * Converts the given media time to the corresponding frame number.
+ * The method only performs the calculations. It does not position the media to the given media time.
+ * The frame returned is the nearest frame that has a media time less than or equal to the given media time.
+ * mapTimeToFrame(0) must not fail and must return the frame number of the first frame.
+ * @param the input media time for the conversion in microseconds.
+ * @return the converted frame number for the given media time. If the conversion fails, -1 is returned.
*/
public int mapTimeToFrame(long aMediaTime) {
checkState();
@@ -77,20 +82,83 @@
return frameNumber;
}
- /* (non-Javadoc)
- * @see javax.microedition.media.control.FramePositioningControl#seek(int)
+ /**
+ * Seek to a given video frame. The media time of the Player will be updated to reflect
+ * the new position set.
+ * This method can be called on a stopped or started Player. If the Player is in the Started state,
+ * this method may cause the Player to change states. If that happens, the appropriate transition
+ * events will be posted by the Player when its state changes.
+ * If the given frame number is less than the first or larger than the last frame number in the media,
+ * seek will jump to either the first or the last frame respectively.
+ * @param aFrameNumber the frame to seek to.
+ * @return the actual number of frames skipped.
*/
public int seek(int aFrameNumber) {
- // TODO Auto-generated method stub
- return 0;
+ final String DEBUG_STR = "FramePositionControl::seek";
+ // Check the state of the player, it shouldn't be in closed state
+ Logger.LOG(Logger.EJavaMMAPI, Logger.EInfo,DEBUG_STR + "+");
+ checkState();
+ int frameNumber = aFrameNumber;
+ int totalNoOfFrames = iImagedata.length;
+ if (aFrameNumber < 0) {
+ frameNumber = 0;
+ } else {
+ if (aFrameNumber > totalNoOfFrames) {
+ frameNumber = totalNoOfFrames;
+ }
+ }
+ long mediaTime = mapFrameToTime(frameNumber);
+ //if the frame number is equal to total number of frames, we will seek to last frame
+ // because it's array index, so last index will be total length -1
+ frameNumber=(frameNumber == totalNoOfFrames) ? (frameNumber-1) : frameNumber;
+ try {
+ long mediaTime1 = iPlayer.setMediaTime(mediaTime);
+ } catch (MediaException e) {
+ // Just ignore the exception
+ e.printStackTrace();
+ }
+ Logger.LOG(Logger.EJavaMMAPI, Logger.EInfo,DEBUG_STR + "- seeked to "+frameNumber);
+ return frameNumber;
}
- /* (non-Javadoc)
- * @see javax.microedition.media.control.FramePositioningControl#skip(int)
+ /**
+ * Skip a given number of frames from the current position. The media time of the Player will be
+ * updated to reflect the new position set.
+ * This method can be called on a stopped or started Player. If the Player is in the Started state,
+ * the current position is changing. Hence, the frame actually skipped to will not be exact.
+ * If the Player is in the Started state, this method may cause the Player to change states.
+ * If that happens, the appropriate transition events will be posted.
+ * If the given framesToSkip will cause the position to extend beyond the first or last frame,
+ * skip will jump to the first or last frame respectively.
+ * @param framesToSkip - the number of frames to skip from the current position.
+ * If framesToSkip is positive, it will seek forward by framesToSkip number of frames.
+ * If framesToSkip is negative, it will seek backward by framesToSkip number of frames.
+ * e.g. skip(-1) will seek backward one frame.
+ *
+ * @return the actual number of frames skipped.
*/
public int skip(int aFramesToSkip) {
- // TODO Auto-generated method stub
- return 0;
+ final String DEBUG_STR = "FramePositionControl::skip";
+ Logger.LOG(Logger.EJavaMMAPI, Logger.EInfo,DEBUG_STR+"+");
+ // check the state of the player, if it closed throw exception
+ checkState();
+ int frameNumberToJump;
+ if (aFramesToSkip < 0) {
+ frameNumberToJump = 0;
+ }
+ // storing it in local variable, so that current frame index variable will be
+ // consistent throughout this function, calling to getiFrameIndex(), each time
+ // may return the different value.
+ int currentFrameIndex=((AnimationPlayer) iPlayer).getiFrameIndex();
+ // we are going to utilize the seek function here
+ // just get the current frame index from player and
+ // add it to the number of frame to skip
+ frameNumberToJump = currentFrameIndex + aFramesToSkip;
+ //if the frameNumberToJump > total no of frames, then skip to the last frame only
+ frameNumberToJump =frameNumberToJump > iImagedata.length ? iImagedata.length-1 : frameNumberToJump;
+ seek(frameNumberToJump);
+ Logger.LOG(Logger.EJavaMMAPI, Logger.EInfo,DEBUG_STR+"-");
+ return frameNumberToJump - currentFrameIndex;
}
}