author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 00:10:53 +0300 | |
changeset 79 | 2f468c1958d0 |
parent 48 | e0d6e9bd3ca7 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: FramePositioningControl |
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* |
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*/ |
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package com.nokia.microedition.media.animation; |
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|
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import javax.microedition.media.MediaException; |
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import javax.microedition.media.Player; |
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import org.eclipse.swt.graphics.ImageData; |
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import com.nokia.microedition.media.control.ControlImpl; |
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import com.nokia.mj.impl.utils.Logger; |
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|
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public class FramePositioningControl extends ControlImpl implements |
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javax.microedition.media.control.FramePositioningControl |
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{ |
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private int iTotalNoOfFrames; |
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|
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/** |
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* Constructor of this Control |
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* This constructor should be accessible only in this package, that's why it is being |
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* declared as package protected. |
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*/ |
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FramePositioningControl(Player aPlayer) |
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{ |
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iPlayer=aPlayer; |
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iTotalNoOfFrames=((AnimationPlayer)iPlayer).getTotalNumberFrames(); |
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} |
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/** |
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* Converts the given frame number to the corresponding media time. |
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* The method only performs the calculations. It does not position the media to the given frame. |
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*/ |
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public long mapFrameToTime(int aFrameNumber) |
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{ |
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checkState(); |
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int totalNoOfFrames=iTotalNoOfFrames; |
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// if invalid parameter is passed |
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if (aFrameNumber < 0 || aFrameNumber > totalNoOfFrames) |
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return -1; |
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return ((AnimationPlayer)iPlayer).getMediaTimeForFrame(aFrameNumber); |
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} |
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|
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/** |
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* Converts the given media time to the corresponding frame number. |
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* The method only performs the calculations. It does not position the media to the given media time. |
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* The frame returned is the nearest frame that has a media time less than or equal to the given media time. |
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* mapTimeToFrame(0) must not fail and must return the frame number of the first frame. |
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* @param the input media time for the conversion in microseconds. |
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* @return the converted frame number for the given media time. If the conversion fails, -1 is returned. |
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*/ |
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public int mapTimeToFrame(long aMediaTime) |
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{ |
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checkState(); |
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return ((AnimationPlayer)iPlayer).findFrame(aMediaTime); |
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} |
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/** |
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* Seek to a given video frame. The media time of the Player will be updated to reflect |
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* the new position set. |
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* This method can be called on a stopped or started Player. If the Player is in the Started state, |
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* this method may cause the Player to change states. If that happens, the appropriate transition |
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* events will be posted by the Player when its state changes. |
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* If the given frame number is less than the first or larger than the last frame number in the media, |
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* seek will jump to either the first or the last frame respectively. |
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* @param aFrameNumber the frame to seek to. |
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* @return the actual number of frames skipped. |
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*/ |
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public int seek(int aFrameNumber) |
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{ |
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final String DEBUG_STR = "FramePositionControl::seek"; |
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// Check the state of the player, it shouldn't be in closed state |
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Logger.LOG(Logger.EJavaMMAPI, Logger.EInfo,DEBUG_STR + "+"); |
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checkState(); |
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int frameNumber = aFrameNumber; |
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int totalNoOfFrames = iTotalNoOfFrames; |
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if (aFrameNumber < 0) |
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{ |
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frameNumber = 0; |
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} |
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95 |
else if (aFrameNumber >= totalNoOfFrames) |
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Revision: v2.2.1
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96 |
{ |
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Revision: v2.2.3
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97 |
frameNumber = totalNoOfFrames-1; |
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Revision: v2.2.1
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98 |
} |
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Revision: v2.2.3
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99 |
long mediaTime = ((AnimationPlayer)iPlayer).getMediaTimeForFrame(frameNumber); |
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Revision: v2.2.1
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100 |
try |
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Revision: v2.2.1
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101 |
{ |
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Revision: v2.2.3
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102 |
iPlayer.setMediaTime(mediaTime); |
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Revision: v2.2.1
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103 |
} |
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Revision: v2.2.1
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104 |
catch (MediaException e) |
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Revision: v2.2.1
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105 |
{ |
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Revision: v2.2.1
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106 |
// Just ignore the exception |
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Revision: v2.2.1
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107 |
e.printStackTrace(); |
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Revision: v2.2.1
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108 |
} |
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Revision: v2.2.1
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109 |
Logger.LOG(Logger.EJavaMMAPI, Logger.EInfo,DEBUG_STR + "- seeked to "+frameNumber); |
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Revision: v2.2.1
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110 |
return frameNumber; |
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Revision: v2.2.1
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111 |
} |
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Revision: v2.1.24
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112 |
|
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Revision: v2.2.1
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113 |
/** |
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Revision: v2.2.1
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114 |
* Skip a given number of frames from the current position. The media time of the Player will be |
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Revision: v2.2.1
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115 |
* updated to reflect the new position set. |
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Revision: v2.2.1
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116 |
* This method can be called on a stopped or started Player. If the Player is in the Started state, |
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Revision: v2.2.1
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117 |
* the current position is changing. Hence, the frame actually skipped to will not be exact. |
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Revision: v2.2.1
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118 |
* If the Player is in the Started state, this method may cause the Player to change states. |
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Revision: v2.2.1
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119 |
* If that happens, the appropriate transition events will be posted. |
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Revision: v2.2.1
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120 |
* If the given framesToSkip will cause the position to extend beyond the first or last frame, |
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Revision: v2.2.1
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121 |
* skip will jump to the first or last frame respectively. |
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Revision: v2.2.1
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122 |
* @param framesToSkip - the number of frames to skip from the current position. |
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Revision: v2.2.1
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123 |
* If framesToSkip is positive, it will seek forward by framesToSkip number of frames. |
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Revision: v2.2.1
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124 |
* If framesToSkip is negative, it will seek backward by framesToSkip number of frames. |
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Revision: v2.2.1
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125 |
* e.g. skip(-1) will seek backward one frame. |
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Revision: v2.2.1
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126 |
* |
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Revision: v2.2.1
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127 |
* @return the actual number of frames skipped. |
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Revision: v2.2.1
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128 |
*/ |
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Revision: v2.2.1
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129 |
public int skip(int aFramesToSkip) |
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Revision: v2.2.1
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130 |
{ |
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Revision: v2.2.3
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131 |
// final String DEBUG_STR = "FramePositionControl::skip"; |
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Revision: v2.2.3
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132 |
//Logger.LOG(Logger.EJavaMMAPI, Logger.EInfo,DEBUG_STR+"+"); |
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Revision: v2.2.1
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133 |
// check the state of the player, if it closed throw exception |
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Revision: v2.2.1
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|
134 |
checkState(); |
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Revision: v2.2.3
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|
135 |
//int frameNumberToJump; |
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Revision: v2.2.3
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136 |
int currentFrameIndex=((AnimationPlayer) iPlayer).getiFrameIndex(); |
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Revision: v2.2.3
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137 |
//If user provides the argument as Integer.max, adding any positive value to it will make it negative |
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Revision: v2.2.3
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|
138 |
//Since a player can't be skipped more than the total number of frames, here we are making it restrictive. |
e0d6e9bd3ca7
Revision: v2.2.3
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|
139 |
if (aFramesToSkip > iTotalNoOfFrames) |
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Revision: v2.2.1
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|
140 |
{ |
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Revision: v2.2.3
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|
141 |
aFramesToSkip = iTotalNoOfFrames; |
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Revision: v2.2.1
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|
142 |
} |
85266cc22c7f
Revision: v2.2.1
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|
143 |
// we are going to utilize the seek function here |
85266cc22c7f
Revision: v2.2.1
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|
144 |
// just get the current frame index from player and |
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Revision: v2.2.1
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|
145 |
// add it to the number of frame to skip |
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Revision: v2.2.3
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|
146 |
int seeked=seek(currentFrameIndex + aFramesToSkip); |
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Revision: v2.2.3
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|
147 |
int numberOfFrameSkipped=seeked-currentFrameIndex; |
e0d6e9bd3ca7
Revision: v2.2.3
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|
148 |
return numberOfFrameSkipped; |
35
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Revision: v2.2.1
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|
149 |
} |
23
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Revision: v2.1.24
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diff
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|
150 |
|
98ccebc37403
Revision: v2.1.24
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diff
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|
151 |
} |