author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 11 Jun 2010 13:33:44 +0300 | |
changeset 35 | 85266cc22c7f |
parent 26 | dc7c549001d5 |
child 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: This class has been implemented for playing the GIF animation |
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* Earlier implementation were dependent on native API, but now AnimationPlayer |
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* will be not use any native code, and all the implementation here is using eswt API |
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* |
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*/ |
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|
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package com.nokia.microedition.media.animation; |
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import java.io.IOException; |
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import javax.microedition.media.MediaException; |
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import javax.microedition.media.protocol.DataSource; |
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|
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import org.eclipse.swt.SWTException; |
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|
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import com.nokia.microedition.media.InternalPlayer; |
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import com.nokia.microedition.media.Locator; |
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import com.nokia.microedition.media.PlugIn; |
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import com.nokia.mj.impl.utils.Logger; |
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/** |
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* This class is used for playing GIF image animation. This class also |
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* implements PlugIn interface which is used from ManagerImpl. |
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* Entire Animation playing is written using eSWT API. |
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* There is no call to native. |
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* |
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*/ |
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public class AnimationPlayerFactory implements PlugIn |
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{ |
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|
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// Used to recognize supported locators. |
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// private static final String ANIMATION_FILE_EXTENSION = ".gif"; |
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|
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// Used to get supported protocols and content type. |
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private static final String ANIMATION_CONTENT_TYPE = "image/gif"; |
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private static final String ANIMATION_HTTP_PROTOCOL = "http"; |
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private static final String ANIMATION_HTTPS_PROTOCOL = "https"; |
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private static final String ANIMATION_FILE_PROTOCOL = "file"; |
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// There is no need to read the first 6 byte and compare it with following string |
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// private static final String ANIMATION_GIF_HEADER="GIF89a"; |
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|
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/** |
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* From PlugIn |
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*/ |
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public InternalPlayer createPlayer(DataSource aDataSource) |
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throws MediaException, IOException |
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{ |
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final String DEBUG_STR="AnimationPlayerFactory::createPlayer()"; |
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Logger.LOG(Logger.EJavaMMAPI, Logger.EInfo,DEBUG_STR+"+"); |
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InternalPlayer player = null; |
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String contentType = aDataSource.getContentType(); |
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// There is no difference in if and else block |
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// in first if block only checking if the content type is available |
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// Player is being created in the same way |
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|
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// First try to create player from content type |
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if (contentType != null) |
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{ |
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if (contentType.equals(ANIMATION_CONTENT_TYPE)) |
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{ |
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player = new AnimationPlayer(aDataSource); |
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} |
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// else{ |
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// throw new MediaException("Content type not supported: " + contentType); |
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// } |
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} //Since it was not possible to identify the player from content type, identify it from it's header |
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// Is there any need to create player through Locator? |
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|
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else |
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{ |
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// We need only 6 bytes to identify whether it's GIF image data or not. |
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// But the problem here is that if we will read even a single byte from stream |
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// that stream won't be useful for loading the image data through ImageLoader class |
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// So better solution is to let the ImageLoader.load(InputStream ) get called |
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// if it successfully load the image, then it means that stream is intended for this player only |
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// otherwise it will throw the SWTException, catch it and return properly |
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try |
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{ |
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player = new AnimationPlayer(aDataSource); |
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} |
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catch (SWTException e) |
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{ |
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// Simply ignore the exception |
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e.printStackTrace(); |
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98 |
} |
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99 |
} |
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100 |
Logger.LOG(Logger.EJavaMMAPI, Logger.EInfo,DEBUG_STR+"-"); |
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101 |
return player; |
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102 |
} |
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Revision: v2.1.24
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103 |
|
35
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104 |
/** |
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105 |
* @param locator |
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106 |
* @return Interplayer object |
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107 |
* @throws IOException |
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108 |
*/ |
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109 |
public InternalPlayer createPlayer(String locator) throws IOException |
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110 |
{ |
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111 |
final String DEBUG_STR="AnimationPlayerFactory::createPlayer(String locator )"; |
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112 |
Logger.LOG(Logger.EJavaMMAPI, Logger.EInfo,DEBUG_STR+"+"); |
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113 |
InternalPlayer player = null; |
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114 |
try |
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115 |
{ |
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116 |
player = new AnimationPlayer(locator); |
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117 |
} |
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118 |
catch (SWTException e) |
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119 |
{ |
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120 |
// For all cases ImageLoader.load throws only SWTException |
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121 |
// here we are finding why it has throws this Exception |
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122 |
// if it is IOException we need to pass it to caller |
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123 |
if (e.getCause().toString().indexOf((IOException.class.getName()))!=-1) |
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124 |
throw new IOException(); |
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Revision: v2.2.1
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125 |
// if exception is due to any other reason, just ignore it |
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126 |
e.printStackTrace(); |
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127 |
} |
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128 |
Logger.LOG(Logger.EJavaMMAPI, Logger.EInfo,DEBUG_STR+"-"); |
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129 |
return player; |
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Revision: v2.2.1
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130 |
} |
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131 |
|
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Revision: v2.1.24
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|
132 |
|
35
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133 |
/** |
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134 |
* From PlugIn |
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135 |
*/ |
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Revision: v2.2.1
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136 |
public String[] getSupportedContentTypes(String aProtocol) |
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137 |
{ |
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Revision: v2.2.1
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138 |
String[] types = new String[0]; |
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Revision: v2.2.1
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139 |
if (aProtocol == null || aProtocol.equals(ANIMATION_HTTP_PROTOCOL) |
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140 |
|| aProtocol.equals(ANIMATION_HTTPS_PROTOCOL) |
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141 |
|| aProtocol.equals(ANIMATION_FILE_PROTOCOL)) |
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|
142 |
{ |
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|
143 |
types = new String[1]; |
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Revision: v2.2.1
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|
144 |
types[0] = ANIMATION_CONTENT_TYPE; |
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145 |
} |
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|
146 |
return types; |
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Revision: v2.2.1
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147 |
} |
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Revision: v2.1.24
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|
148 |
|
35
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|
149 |
/** |
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150 |
* From PlugIn |
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151 |
*/ |
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|
152 |
public String[] getSupportedProtocols(String aContentType) |
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|
153 |
{ |
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|
154 |
String[] protocols = new String[0]; |
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Revision: v2.2.1
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|
155 |
if ((aContentType == null) |
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Revision: v2.2.1
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|
156 |
|| aContentType.equals(ANIMATION_CONTENT_TYPE)) |
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Revision: v2.2.1
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|
157 |
{ |
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Revision: v2.2.1
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|
158 |
protocols = new String[3]; |
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Revision: v2.2.1
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|
159 |
protocols[0] = ANIMATION_HTTP_PROTOCOL; |
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Revision: v2.2.1
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|
160 |
protocols[1] = ANIMATION_HTTPS_PROTOCOL; |
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Revision: v2.2.1
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|
161 |
protocols[2] = ANIMATION_FILE_PROTOCOL; |
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Revision: v2.2.1
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|
162 |
} |
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Revision: v2.2.1
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|
163 |
// else empty array is returned |
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Revision: v2.2.1
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|
164 |
return protocols; |
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Revision: v2.2.1
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|
165 |
} |
23
98ccebc37403
Revision: v2.1.24
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|
166 |
|
35
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Revision: v2.2.1
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|
167 |
/** |
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Revision: v2.2.1
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|
168 |
* From PlugIn. Empty implementation. |
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Revision: v2.2.1
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|
169 |
*/ |
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Revision: v2.2.1
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|
170 |
public void preparePlayer(InternalPlayer aPlayer) throws MediaException |
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Revision: v2.2.1
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|
171 |
{ |
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Revision: v2.2.1
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|
172 |
|
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Revision: v2.2.1
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|
173 |
} |
23
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Revision: v2.1.24
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|
174 |
} |