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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/edba/dist/qtopia/main-Sunday/qtopia/src/libraries/qtopia/mediaplayerplugininterface.cpp:430 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>MediaPlayerDecoder_1_6 Class</title><style type="text/css"><!--h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; }a:link { color: #004faf; text-decoration: none }a:visited { color: #672967; text-decoration: none }body { background: #ffffff; color: black; }--></style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td width="200" align="left" valign="top"><a href="index.html"><img height="27" width="472" src="dochead.png" border="0"></a><br><font face="Arial,Helvetica,Geneva,Swiss,SunSans-Regular" align="center" size=32>Qtopia</font> <a href="index.html">Home</a> - <a href="qtopiaclasses.html">Classes</a> - <a href="qtopiaannotated.html">Annotated</a> - <a href="qtopiafunctions.html">Functions</a> - <a href="qtindex.html">Qt Embedded</a></td><td align="right" valign="top"> <table border="0" cellpadding="0" cellspacing="0" width="137"> <tr> <td><a href="http://www.trolltech.com/company/about/trolls.html"><img height="100" width="100" src="face.png" border="0"></a></td> <td><img height="100" width="100" src="qtlogo.png" align="top" border="0"></td> </tr> </table></td></tr></table><h1 align=center>MediaPlayerDecoder_1_6 Class Reference</h1><p>The MediaPlayerDecoder_1_6 class provides an extension to theMediaPlayerDecoder class for Qtopia MediaPlayer decoder plugins.<a href="#details">More...</a><p><tt>#include <<a href="mediaplayerplugininterface-h.html">mediaplayerplugininterface.h</a>></tt><p>Inherits <a href="mediaplayerdecoder.html">MediaPlayerDecoder</a>.<p><a href="mediaplayerdecoder_1_6-members.html">List of all member functions.</a><h2>Public Members</h2><ul><li><div class=fn>virtual bool <a href="#supportsStreaming"><b>supportsStreaming</b></a> () = 0</div></li><li><div class=fn>virtual bool <a href="#canStreamURL"><b>canStreamURL</b></a> ( const QUrl & url, const QString & mimetype ) = 0</div></li><li><div class=fn>virtual bool <a href="#openURL"><b>openURL</b></a> ( const QUrl & url, const QString & mimetype ) = 0</div></li><li><div class=fn>virtual bool <a href="#streamed"><b>streamed</b></a> () = 0</div></li><li><div class=fn>virtual bool <a href="#syncAvailable"><b>syncAvailable</b></a> () = 0</div></li><li><div class=fn>virtual bool <a href="#sync"><b>sync</b></a> () = 0</div></li><li><div class=fn>virtual bool <a href="#seekAvailable"><b>seekAvailable</b></a> () = 0</div></li><li><div class=fn>virtual bool <a href="#seek"><b>seek</b></a> ( long pos ) = 0</div></li><li><div class=fn>virtual bool <a href="#tellAvailable"><b>tellAvailable</b></a> () = 0</div></li><li><div class=fn>virtual long <a href="#tell"><b>tell</b></a> () = 0</div></li><li><div class=fn>virtual bool <a href="#lengthAvailable"><b>lengthAvailable</b></a> () = 0</div></li><li><div class=fn>virtual long <a href="#length"><b>length</b></a> () = 0</div></li><li><div class=fn>virtual bool <a href="#totalTimeAvailable"><b>totalTimeAvailable</b></a> () = 0</div></li><li><div class=fn>virtual long <a href="#totalTime"><b>totalTime</b></a> () = 0</div></li><li><div class=fn>virtual bool <a href="#currentTimeAvailable"><b>currentTimeAvailable</b></a> () = 0</div></li><li><div class=fn>virtual long <a href="#currentTime"><b>currentTime</b></a> () = 0</div></li></ul><hr><a name="details"></a><h2>Detailed Description</h2><p> The MediaPlayerDecoder_1_6 class provides an extension to the<a href="mediaplayerdecoder.html">MediaPlayerDecoder</a> class for Qtopia MediaPlayer decoder plugins.<p> <p>See also <a href="qtopiaemb.html">Qtopia Classes</a>.<hr><h2>Member Function Documentation</h2><h3 class=fn>bool <a name="canStreamURL"></a>MediaPlayerDecoder_1_6::canStreamURL ( const QUrl & url, const QString & mimetype )<tt> [pure virtual]</tt></h3><p> Returns TRUE if the decoder can support the given <em>mimetype</em> with the <em>url</em> provided.<h3 class=fn>long <a name="currentTime"></a>MediaPlayerDecoder_1_6::currentTime ()<tt> [pure virtual]</tt></h3><p> Returns the current millisecond being played in the stream. The accuracy should onlybe considered good enough for the use in the display of the current play time andnot used for the precise timing of syncing playback. Not all formats contain timestamps,therefore after seeking, not all formats and decoders will be able to support this function.<h3 class=fn>bool <a name="currentTimeAvailable"></a>MediaPlayerDecoder_1_6::currentTimeAvailable ()<tt> [pure virtual]</tt></h3><p> Returns TRUE if the decoder can support the <a href="#currentTime">currentTime</a>() function for the given stream.<h3 class=fn>long <a name="length"></a>MediaPlayerDecoder_1_6::length ()<tt> [pure virtual]</tt></h3><p> Returns the length in bytes of the stream. For streamed data, the protocol maynot always return how long the stream will be, therefore it should be assumedthat this may not always be available with all decoder plugins.<h3 class=fn>bool <a name="lengthAvailable"></a>MediaPlayerDecoder_1_6::lengthAvailable ()<tt> [pure virtual]</tt></h3><p> Returns TRUE if the decoder can support the <a href="#length">length</a>() function for the given stream.<h3 class=fn>bool <a name="openURL"></a>MediaPlayerDecoder_1_6::openURL ( const QUrl & url, const QString & mimetype )<tt> [pure virtual]</tt></h3><p> Opens the <em>url</em> of given <em>mimetype</em>. Typically this information is provided by a webserver to a web browser which could pass this on directly to the plugin or indirectly to theQtopia Media Player through a QCop signal.<h3 class=fn>bool <a name="seek"></a>MediaPlayerDecoder_1_6::seek ( long pos )<tt> [pure virtual]</tt></h3><p> Seeks to <em>pos</em> byte offset from the beginning of the stream.<h3 class=fn>bool <a name="seekAvailable"></a>MediaPlayerDecoder_1_6::seekAvailable ()<tt> [pure virtual]</tt></h3><p> Returns TRUE if the stream is seekable or not. For streamed media, it is possiblethat seeking may not be able to be implemented in the plugin thereforethe plugin returns FALSE, otherwise if it can, it returns TRUE.<h3 class=fn>bool <a name="streamed"></a>MediaPlayerDecoder_1_6::streamed ()<tt> [pure virtual]</tt></h3><p> Returns TRUE if the decoder is playing a streamed file opened using <a href="#openURL">openURL</a>(), or FALSE if the file wasopened using the <a href="mediaplayerdecoder.html#open">MediaPlayerDecoder::open</a>() function used for files.<h3 class=fn>bool <a name="supportsStreaming"></a>MediaPlayerDecoder_1_6::supportsStreaming ()<tt> [pure virtual]</tt></h3><p> Returns TRUE if the decoder supports streaming.<h3 class=fn>bool <a name="sync"></a>MediaPlayerDecoder_1_6::sync ()<tt> [pure virtual]</tt></h3><p> Sync up the video to match the timestamp of where the audio currently is playing.If the video is behind, this will skip forward to the correctly matching frame.<h3 class=fn>bool <a name="syncAvailable"></a>MediaPlayerDecoder_1_6::syncAvailable ()<tt> [pure virtual]</tt></h3><p> Returns TRUE if the decoder supports for the given stream syncing the audio andvideo together with the <a href="#sync">sync</a>() function.<h3 class=fn>long <a name="tell"></a>MediaPlayerDecoder_1_6::tell ()<tt> [pure virtual]</tt></h3><p> Returns the current byte offset from the beginning of the stream.<h3 class=fn>bool <a name="tellAvailable"></a>MediaPlayerDecoder_1_6::tellAvailable ()<tt> [pure virtual]</tt></h3><p> Returns TRUE if the decoder can support the <a href="#tell">tell</a>() function for the given stream.<h3 class=fn>long <a name="totalTime"></a>MediaPlayerDecoder_1_6::totalTime ()<tt> [pure virtual]</tt></h3><p> Returns the total time in milliseconds of the stream. For some file formats,the total play time may not be easily obtainable. Some formats use VBR (variablebit rate) encoding without timestamps making it uncertain as to exactly how longit takes to play the file without actually decoding or indexing it.<h3 class=fn>bool <a name="totalTimeAvailable"></a>MediaPlayerDecoder_1_6::totalTimeAvailable ()<tt> [pure virtual]</tt></h3><p> Returns TRUE if the decoder can support the <a href="#totalTime">totalTime</a>() function for the given stream.<!-- eof --><hr><p>This file is part of the <a href="../index.html">Qtopia</a> platform,copyright © 1995-2004<a href="http://www.trolltech.com/">Trolltech</a>, all rights reserved.<p><address><hr><div align="center"><table width="100%" cellspacing="0" border="0"><tr><td>Copyright © 2001-2004 Trolltech<td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a><td align="right"><div align="right">Qtopia version 2.0.0</div></table></div></address></body></html>⌨️ 快捷键说明
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