<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <title>FIFE: engine/core/audio/soundclip.cpp Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="search/search.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="search/search.js"></script> <link href="navtree.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="navtree.js"></script> <script type="text/javascript" src="resize.js"></script> <script type="text/javascript"> $(document).ready(initResizable); </script> <link href="doxygen.css" rel="stylesheet" type="text/css"/> </head> <body onload='searchBox.OnSelectItem(0);'> <!-- Generated by Doxygen 1.7.4 --> <script type="text/javascript"><!-- var searchBox = new SearchBox("searchBox", "search",false,'Search'); --></script> <div id="top"> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">FIFE <span id="projectnumber">2008.0</span></div> </td> </tr> </tbody> </table> </div> <div id="navrow1" class="tabs"> <ul class="tablist"> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="annotated.html"><span>Classes</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> <li><a href="dirs.html"><span>Directories</span></a></li> <li><a href="examples.html"><span>Examples</span></a></li> <li id="searchli"> <div id="MSearchBox" class="MSearchBoxInactive"> <span class="left"> <img id="MSearchSelect" src="search/mag_sel.png" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" alt=""/> <input type="text" id="MSearchField" value="Search" accesskey="S" onfocus="searchBox.OnSearchFieldFocus(true)" onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> </span><span class="right"> <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a> </span> </div> </li> </ul> </div> <div id="navrow2" class="tabs2"> <ul class="tablist"> <li><a href="files.html"><span>File List</span></a></li> </ul> </div> </div> <div id="side-nav" class="ui-resizable side-nav-resizable"> <div id="nav-tree"> <div id="nav-tree-contents"> </div> </div> <div id="splitbar" style="-moz-user-select:none;" class="ui-resizable-handle"> </div> </div> <script type="text/javascript"> initNavTree('soundclip_8cpp.html',''); </script> <div id="doc-content"> <div class="header"> <div class="headertitle"> <div class="title">soundclip.cpp</div> </div> </div> <div class="contents"> <div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/***************************************************************************</span> <a name="l00002"></a>00002 <span class="comment"> * Copyright (C) 2005-2008 by the FIFE team *</span> <a name="l00003"></a>00003 <span class="comment"> * http://www.fifengine.de *</span> <a name="l00004"></a>00004 <span class="comment"> * This file is part of FIFE. *</span> <a name="l00005"></a>00005 <span class="comment"> * *</span> <a name="l00006"></a>00006 <span class="comment"> * FIFE is free software; you can redistribute it and/or *</span> <a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the GNU Lesser General Public *</span> <a name="l00008"></a>00008 <span class="comment"> * License as published by the Free Software Foundation; either *</span> <a name="l00009"></a>00009 <span class="comment"> * version 2.1 of the License, or (at your option) any later version. *</span> <a name="l00010"></a>00010 <span class="comment"> * *</span> <a name="l00011"></a>00011 <span class="comment"> * This library is distributed in the hope that it will be useful, *</span> <a name="l00012"></a>00012 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of *</span> <a name="l00013"></a>00013 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *</span> <a name="l00014"></a>00014 <span class="comment"> * Lesser General Public License for more details. *</span> <a name="l00015"></a>00015 <span class="comment"> * *</span> <a name="l00016"></a>00016 <span class="comment"> * You should have received a copy of the GNU Lesser General Public *</span> <a name="l00017"></a>00017 <span class="comment"> * License along with this library; if not, write to the *</span> <a name="l00018"></a>00018 <span class="comment"> * Free Software Foundation, Inc., *</span> <a name="l00019"></a>00019 <span class="comment"> * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *</span> <a name="l00020"></a>00020 <span class="comment"> ***************************************************************************/</span> <a name="l00021"></a>00021 <a name="l00022"></a>00022 <span class="comment">// Standard C++ library includes</span> <a name="l00023"></a>00023 <a name="l00024"></a>00024 <span class="comment">// Platform specific includes</span> <a name="l00025"></a>00025 <a name="l00026"></a>00026 <span class="comment">// 3rd party library includes</span> <a name="l00027"></a>00027 <a name="l00028"></a>00028 <span class="comment">// FIFE includes</span> <a name="l00029"></a>00029 <span class="comment">// These includes are split up in two parts, separated by one empty line</span> <a name="l00030"></a>00030 <span class="comment">// First block: files included from the FIFE root src directory</span> <a name="l00031"></a>00031 <span class="comment">// Second block: files included from the same folder</span> <a name="l00032"></a>00032 <span class="preprocessor">#include "util/base/exception.h"</span> <a name="l00033"></a>00033 <span class="preprocessor">#include "util/log/logger.h"</span> <a name="l00034"></a>00034 <a name="l00035"></a>00035 <span class="preprocessor">#include "soundclip.h"</span> <a name="l00036"></a>00036 <a name="l00037"></a><a class="code" href="namespace_f_i_f_e.html">00037</a> <span class="keyword">namespace </span>FIFE { <a name="l00038"></a>00038 <span class="keyword">static</span> <a class="code" href="class_f_i_f_e_1_1_logger.html">Logger</a> _log(LM_AUDIO); <a name="l00039"></a>00039 <a name="l00040"></a>00040 SoundClip::SoundClip(SoundDecoder* decptr, <span class="keywordtype">bool</span> deletedecoder) : m_isstream(decptr->needsStreaming()), m_decoder(decptr), m_deletedecoder(deletedecoder) { <a name="l00041"></a>00041 <span class="keywordflow">if</span> (!m_isstream) { <a name="l00042"></a>00042 <a name="l00043"></a>00043 <span class="comment">// only for non-streaming buffers</span> <a name="l00044"></a>00044 SoundBufferEntry* ptr = <span class="keyword">new</span> SoundBufferEntry(); <a name="l00045"></a>00045 <a name="l00046"></a>00046 <span class="comment">// iterate the bufs and fill them with data</span> <a name="l00047"></a>00047 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < BUFFER_NUM; i++) { <a name="l00048"></a>00048 <a name="l00049"></a>00049 <span class="keywordflow">if</span> (m_decoder->decode(BUFFER_LEN)) { <a name="l00050"></a>00050 <span class="comment">// EOF or error</span> <a name="l00051"></a>00051 <span class="keywordflow">break</span>; <a name="l00052"></a>00052 } <a name="l00053"></a>00053 <a name="l00054"></a>00054 <span class="comment">// generate buffer and fill it with data</span> <a name="l00055"></a>00055 alGenBuffers(1, &ptr->buffers[i]); <a name="l00056"></a>00056 <a name="l00057"></a>00057 alBufferData(ptr->buffers[i], m_decoder->getALFormat(), m_decoder->getBuffer(), <a name="l00058"></a>00058 m_decoder->getBufferSize(), m_decoder->getSampleRate()); <a name="l00059"></a>00059 <a name="l00060"></a>00060 CHECK_OPENAL_LOG(_log, LogManager::LEVEL_ERROR, <span class="stringliteral">"error copying data to buffers"</span>) <a name="l00061"></a>00061 <a name="l00062"></a>00062 ptr->usedbufs++; <a name="l00063"></a>00063 } <a name="l00064"></a>00064 <a name="l00065"></a>00065 m_decoder->releaseBuffer(); <a name="l00066"></a>00066 <a name="l00067"></a>00067 <span class="comment">// push the buffer information to the vector</span> <a name="l00068"></a>00068 m_buffervec.push_back(ptr); <a name="l00069"></a>00069 <a name="l00070"></a>00070 } <a name="l00071"></a>00071 } <a name="l00072"></a>00072 <a name="l00073"></a><a class="code" href="class_f_i_f_e_1_1_sound_clip.html#a86362d2cd01ef557058244febb349d27">00073</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="class_f_i_f_e_1_1_sound_clip.html#a86362d2cd01ef557058244febb349d27">SoundClip::beginStreaming</a>() { <a name="l00074"></a>00074 <span class="comment">// create new sound buffer entry</span> <a name="l00075"></a>00075 SoundBufferEntry* ptr = <span class="keyword">new</span> SoundBufferEntry(); <a name="l00076"></a>00076 ptr->usedbufs=0; <a name="l00077"></a>00077 alGenBuffers(BUFFER_NUM, ptr->buffers); <a name="l00078"></a>00078 <a name="l00079"></a>00079 CHECK_OPENAL_LOG(_log, LogManager::LEVEL_ERROR, <span class="stringliteral">"error creating streaming-buffers"</span>) <a name="l00080"></a>00080 <a name="l00081"></a>00081 m_buffervec.push_back(ptr); <a name="l00082"></a>00082 <a name="l00083"></a>00083 <span class="keywordflow">return</span> m_buffervec.size()-1; <a name="l00084"></a>00084 } <a name="l00085"></a>00085 <a name="l00086"></a><a class="code" href="class_f_i_f_e_1_1_sound_clip.html#a3a4726ccdf1a69757a83cdf443f0a81b">00086</a> <span class="keywordtype">bool</span> <a class="code" href="class_f_i_f_e_1_1_sound_clip.html#a3a4726ccdf1a69757a83cdf443f0a81b">SoundClip::setStreamPos</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> streamid, <a class="code" href="namespace_f_i_f_e.html#a916f5475b0179268911b3e655a5c1541">SoundPositionType</a> type, <span class="keywordtype">float</span> value) { <a name="l00087"></a>00087 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> pos = 0; <a name="l00088"></a>00088 <a name="l00089"></a>00089 <span class="comment">// convert position to bytes</span> <a name="l00090"></a>00090 <span class="keywordflow">switch</span> (type) { <a name="l00091"></a>00091 <span class="keywordflow">case</span> SD_BYTE_POS: <a name="l00092"></a>00092 pos = <span class="keyword">static_cast<</span><span class="keywordtype">unsigned</span> <span class="keywordtype">long</span><span class="keyword">></span>(value); <a name="l00093"></a>00093 <span class="keywordflow">break</span>; <a name="l00094"></a>00094 <span class="keywordflow">case</span> SD_TIME_POS: <a name="l00095"></a>00095 value *= m_decoder->getSampleRate(); <a name="l00096"></a>00096 <span class="keywordflow">case</span> SD_SAMPLE_POS: <a name="l00097"></a>00097 pos = <span class="keyword">static_cast<</span><span class="keywordtype">unsigned</span> <span class="keywordtype">long</span><span class="keyword">></span>((m_decoder->getBitResolution() / 8) * (m_decoder->isStereo() ? 2 : 1) * value); <a name="l00098"></a>00098 <span class="keywordflow">break</span>; <a name="l00099"></a>00099 } <a name="l00100"></a>00100 <a name="l00101"></a>00101 <span class="keywordflow">if</span> (pos > m_decoder->getDecodedLength()) { <a name="l00102"></a>00102 <span class="comment">// EOF!</span> <a name="l00103"></a>00103 <span class="keywordflow">return</span> <span class="keyword">true</span>; <a name="l00104"></a>00104 } <a name="l00105"></a>00105 <a name="l00106"></a>00106 <span class="comment">// set cursor position</span> <a name="l00107"></a>00107 m_buffervec.at(streamid)->deccursor = pos; <a name="l00108"></a>00108 <span class="keywordflow">return</span> <span class="keyword">false</span>; <a name="l00109"></a>00109 } <a name="l00110"></a>00110 <a name="l00111"></a><a class="code" href="class_f_i_f_e_1_1_sound_clip.html#a04177ce7aaf42507306cc61f300d77c1">00111</a> <span class="keywordtype">float</span> <a class="code" href="class_f_i_f_e_1_1_sound_clip.html#a04177ce7aaf42507306cc61f300d77c1">SoundClip::getStreamPos</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> streamid, <a class="code" href="namespace_f_i_f_e.html#a916f5475b0179268911b3e655a5c1541">SoundPositionType</a> type)<span class="keyword"> const</span>{ <a name="l00112"></a>00112 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> pos = m_buffervec.at(streamid)->deccursor; <a name="l00113"></a>00113 <span class="keywordflow">switch</span>(type) { <a name="l00114"></a>00114 <span class="keywordflow">case</span> SD_BYTE_POS: <a name="l00115"></a>00115 <span class="keywordflow">return</span> pos; <a name="l00116"></a>00116 <span class="keywordflow">case</span> SD_SAMPLE_POS: <a name="l00117"></a>00117 <span class="keywordflow">return</span> pos / (m_decoder->getBitResolution() / 8 * (m_decoder->isStereo() ? 2 : 1)); <a name="l00118"></a>00118 <span class="keywordflow">case</span> SD_TIME_POS: <a name="l00119"></a>00119 <span class="keywordflow">return</span> pos / (m_decoder->getBitResolution() / 8 * (m_decoder->isStereo() ? 2 : 1) * m_decoder->getSampleRate()); <a name="l00120"></a>00120 } <a name="l00121"></a>00121 <span class="keywordflow">return</span> 0.0f; <a name="l00122"></a>00122 } <a name="l00123"></a>00123 <a name="l00124"></a><a class="code" href="class_f_i_f_e_1_1_sound_clip.html#ae5abda1147d99bed9f7dee405937d656">00124</a> <span class="keywordtype">void</span> <a class="code" href="class_f_i_f_e_1_1_sound_clip.html#ae5abda1147d99bed9f7dee405937d656">SoundClip::acquireStream</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> streamid) { <a name="l00125"></a>00125 <a name="l00126"></a>00126 SoundBufferEntry* ptr = m_buffervec.at(streamid); <a name="l00127"></a>00127 <a name="l00128"></a>00128 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < BUFFER_NUM; i++) { <a name="l00129"></a>00129 <a class="code" href="class_f_i_f_e_1_1_sound_clip.html#ad882933b8aec3c13d03b201bf4f57c38">getStream</a>(streamid, ptr->buffers[i]); <a name="l00130"></a>00130 } <a name="l00131"></a>00131 } <a name="l00132"></a>00132 <a name="l00133"></a><a class="code" href="class_f_i_f_e_1_1_sound_clip.html#ad882933b8aec3c13d03b201bf4f57c38">00133</a> <span class="keywordtype">bool</span> <a class="code" href="class_f_i_f_e_1_1_sound_clip.html#ad882933b8aec3c13d03b201bf4f57c38">SoundClip::getStream</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> streamid, ALuint buffer) { <a name="l00134"></a>00134 <a name="l00135"></a>00135 SoundBufferEntry* ptr = m_buffervec.at(streamid); <a name="l00136"></a>00136 <a name="l00137"></a>00137 <span class="keywordflow">if</span> (ptr->deccursor >= m_decoder->getDecodedLength()) { <a name="l00138"></a>00138 <span class="comment">// EOF!</span> <a name="l00139"></a>00139 <span class="keywordflow">return</span> <span class="keyword">true</span>; <a name="l00140"></a>00140 } <a name="l00141"></a>00141 <a name="l00142"></a>00142 <span class="comment">// set cursor of decoder</span> <a name="l00143"></a>00143 m_decoder->setCursor(ptr->deccursor); <a name="l00144"></a>00144 <a name="l00145"></a>00145 <span class="comment">// Error while decoding file?</span> <a name="l00146"></a>00146 <span class="keywordflow">if</span> (m_decoder->decode(BUFFER_LEN)) { <a name="l00147"></a>00147 <span class="keywordflow">throw</span> <a class="code" href="class_f_i_f_e_1_1_exception.html">Exception</a>(<span class="stringliteral">"error while reading from audio file"</span>); <a name="l00148"></a>00148 } <a name="l00149"></a>00149 <a name="l00150"></a>00150 <span class="comment">// fill the buffer with data</span> <a name="l00151"></a>00151 alBufferData(buffer, m_decoder->getALFormat(), <a name="l00152"></a>00152 m_decoder->getBuffer(), m_decoder->getBufferSize(), m_decoder->getSampleRate()); <a name="l00153"></a>00153 <a name="l00154"></a>00154 m_decoder->releaseBuffer(); <a name="l00155"></a>00155 <a name="l00156"></a>00156 <span class="comment">// update cursor</span> <a name="l00157"></a>00157 ptr->deccursor += BUFFER_LEN; <a name="l00158"></a>00158 <a name="l00159"></a>00159 CHECK_OPENAL_LOG(_log, LogManager::LEVEL_ERROR, <span class="stringliteral">"error catching stream"</span>) <a name="l00160"></a>00160 <a name="l00161"></a>00161 <span class="keywordflow">return</span> <span class="keyword">false</span>; <a name="l00162"></a>00162 } <a name="l00163"></a>00163 <a name="l00164"></a><a class="code" href="class_f_i_f_e_1_1_sound_clip.html#a1527306393d8f924ed400964ed7f2abb">00164</a> <span class="keywordtype">void</span> <a class="code" href="class_f_i_f_e_1_1_sound_clip.html#a1527306393d8f924ed400964ed7f2abb">SoundClip::quitStreaming</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> streamid) { <a name="l00165"></a>00165 <span class="comment">// release the buffers</span> <a name="l00166"></a>00166 SoundBufferEntry* ptr = m_buffervec.at(streamid); <a name="l00167"></a>00167 alDeleteBuffers(BUFFER_NUM, ptr->buffers); <a name="l00168"></a>00168 ptr->buffers[0] = 0; <a name="l00169"></a>00169 } <a name="l00170"></a>00170 <a name="l00171"></a>00171 SoundClip::~SoundClip() { <a name="l00172"></a>00172 <span class="keywordflow">if</span> (m_isstream) { <a name="l00173"></a>00173 <span class="comment">// erase all elements from the list</span> <a name="l00174"></a>00174 std::vector<SoundBufferEntry*>::iterator it; <a name="l00175"></a>00175 <a name="l00176"></a>00176 <span class="keywordflow">for</span> (it = m_buffervec.begin(); it != m_buffervec.end(); ++it) { <a name="l00177"></a>00177 <span class="keywordflow">if</span> ((*it)->buffers[0] != 0) { <a name="l00178"></a>00178 alDeleteBuffers(BUFFER_NUM, (*it)->buffers); <a name="l00179"></a>00179 } <a name="l00180"></a>00180 <span class="keyword">delete</span> (*it); <a name="l00181"></a>00181 } <a name="l00182"></a>00182 m_buffervec.clear(); <a name="l00183"></a>00183 } <a name="l00184"></a>00184 <span class="keywordflow">else</span> { <a name="l00185"></a>00185 <span class="comment">// for non-streaming soundclips</span> <a name="l00186"></a>00186 SoundBufferEntry* ptr = m_buffervec.at(0); <a name="l00187"></a>00187 <a name="l00188"></a>00188 <span class="keywordflow">for</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < ptr->usedbufs; i++) { <a name="l00189"></a>00189 alDeleteBuffers(1, &ptr->buffers[i]); <a name="l00190"></a>00190 } <a name="l00191"></a>00191 } <a name="l00192"></a>00192 <a name="l00193"></a>00193 <span class="comment">// delete decoder</span> <a name="l00194"></a>00194 <span class="keywordflow">if</span> (m_deletedecoder && m_decoder != NULL) { <a name="l00195"></a>00195 <span class="keyword">delete</span> m_decoder; <a name="l00196"></a>00196 } <a name="l00197"></a>00197 } <a name="l00198"></a>00198 } </pre></div></div> </div> <div id="nav-path" class="navpath"> <ul> <li class="navelem"><b>soundclip.cpp</b> </li> <li class="footer">Generated on Sun Jul 10 2011 for FIFE by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.4 </li> </ul> </div> <!-- window showing the filter options --> <div id="MSearchSelectWindow" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" onkeydown="return searchBox.OnSearchSelectKey(event)"> <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Enumerator</a></div> <!-- iframe showing the search results (closed by default) --> <div id="MSearchResultsWindow"> <iframe src="javascript:void(0)" frameborder="0" name="MSearchResults" id="MSearchResults"> </iframe> </div> </body> </html>