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<h1>SoundFileOgg.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
<a name="l00002"></a>00002 <span class="comment">//</span>
<a name="l00003"></a>00003 <span class="comment">// SFML - Simple and Fast Multimedia Library</span>
<a name="l00004"></a>00004 <span class="comment">// Copyright (C) 2007-2009 Laurent Gomila (laurent.gom@gmail.com)</span>
<a name="l00005"></a>00005 <span class="comment">//</span>
<a name="l00006"></a>00006 <span class="comment">// This software is provided 'as-is', without any express or implied warranty.</span>
<a name="l00007"></a>00007 <span class="comment">// In no event will the authors be held liable for any damages arising from the use of this software.</span>
<a name="l00008"></a>00008 <span class="comment">//</span>
<a name="l00009"></a>00009 <span class="comment">// Permission is granted to anyone to use this software for any purpose,</span>
<a name="l00010"></a>00010 <span class="comment">// including commercial applications, and to alter it and redistribute it freely,</span>
<a name="l00011"></a>00011 <span class="comment">// subject to the following restrictions:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// 1. The origin of this software must not be misrepresented;</span>
<a name="l00014"></a>00014 <span class="comment">// you must not claim that you wrote the original software.</span>
<a name="l00015"></a>00015 <span class="comment">// If you use this software in a product, an acknowledgment</span>
<a name="l00016"></a>00016 <span class="comment">// in the product documentation would be appreciated but is not required.</span>
<a name="l00017"></a>00017 <span class="comment">//</span>
<a name="l00018"></a>00018 <span class="comment">// 2. Altered source versions must be plainly marked as such,</span>
<a name="l00019"></a>00019 <span class="comment">// and must not be misrepresented as being the original software.</span>
<a name="l00020"></a>00020 <span class="comment">//</span>
<a name="l00021"></a>00021 <span class="comment">// 3. This notice may not be removed or altered from any source distribution.</span>
<a name="l00022"></a>00022 <span class="comment">//</span>
<a name="l00024"></a>00024 <span class="comment"></span>
<a name="l00026"></a>00026 <span class="comment">// Headers</span>
<a name="l00028"></a>00028 <span class="comment"></span><span class="preprocessor">#include <SFML/Audio/SoundFileOgg.hpp></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <SFML/Audio/stb_vorbis/stb_vorbis.h></span>
<a name="l00030"></a>00030 <span class="preprocessor">#include <iostream></span>
<a name="l00031"></a>00031
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="keyword">namespace </span>sf
<a name="l00034"></a>00034 {
<a name="l00035"></a>00035 <span class="keyword">namespace </span>priv
<a name="l00036"></a>00036 {
<a name="l00040"></a>00040 SoundFileOgg::SoundFileOgg() :
<a name="l00041"></a>00041 myStream (NULL),
<a name="l00042"></a>00042 myChannelsCount(0)
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046
<a name="l00047"></a>00047
<a name="l00051"></a>00051 SoundFileOgg::~SoundFileOgg()
<a name="l00052"></a>00052 {
<a name="l00053"></a>00053 <span class="keywordflow">if</span> (myStream)
<a name="l00054"></a>00054 stb_vorbis_close(myStream);
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056
<a name="l00057"></a>00057
<a name="l00061"></a>00061 <span class="keywordtype">bool</span> SoundFileOgg::IsFileSupported(<span class="keyword">const</span> std::string& Filename, <span class="keywordtype">bool</span> Read)
<a name="l00062"></a>00062 {
<a name="l00063"></a>00063 <span class="keywordflow">if</span> (Read)
<a name="l00064"></a>00064 {
<a name="l00065"></a>00065 <span class="comment">// Open the vorbis stream</span>
<a name="l00066"></a>00066 stb_vorbis* Stream = stb_vorbis_open_filename(const_cast<char*>(Filename.c_str()), NULL, NULL);
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="keywordflow">if</span> (Stream)
<a name="l00069"></a>00069 {
<a name="l00070"></a>00070 stb_vorbis_close(Stream);
<a name="l00071"></a>00071 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00072"></a>00072 }
<a name="l00073"></a>00073 <span class="keywordflow">else</span>
<a name="l00074"></a>00074 {
<a name="l00075"></a>00075 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078 <span class="keywordflow">else</span>
<a name="l00079"></a>00079 {
<a name="l00080"></a>00080 <span class="comment">// No support for writing ogg files yet...</span>
<a name="l00081"></a>00081 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084
<a name="l00085"></a>00085
<a name="l00089"></a>00089 <span class="keywordtype">bool</span> SoundFileOgg::IsFileSupported(<span class="keyword">const</span> <span class="keywordtype">char</span>* Data, std::size_t SizeInBytes)
<a name="l00090"></a>00090 {
<a name="l00091"></a>00091 <span class="comment">// Open the vorbis stream</span>
<a name="l00092"></a>00092 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* Buffer = <span class="keyword">reinterpret_cast<</span><span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*<span class="keyword">></span>(<span class="keyword">const_cast<</span><span class="keywordtype">char</span>*<span class="keyword">></span>(Data));
<a name="l00093"></a>00093 <span class="keywordtype">int</span> Length = <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(SizeInBytes);
<a name="l00094"></a>00094 stb_vorbis* Stream = stb_vorbis_open_memory(Buffer, Length, NULL, NULL);
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="keywordflow">if</span> (Stream)
<a name="l00097"></a>00097 {
<a name="l00098"></a>00098 stb_vorbis_close(Stream);
<a name="l00099"></a>00099 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101 <span class="keywordflow">else</span>
<a name="l00102"></a>00102 {
<a name="l00103"></a>00103 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00104"></a>00104 }
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106
<a name="l00107"></a>00107
<a name="l00111"></a>00111 <span class="keywordtype">bool</span> SoundFileOgg::OpenRead(<span class="keyword">const</span> std::string& Filename, std::size_t& NbSamples, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& ChannelsCount, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& SampleRate)
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113 <span class="comment">// Close the file if already opened</span>
<a name="l00114"></a>00114 <span class="keywordflow">if</span> (myStream)
<a name="l00115"></a>00115 stb_vorbis_close(myStream);
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="comment">// Open the vorbis stream</span>
<a name="l00118"></a>00118 myStream = stb_vorbis_open_filename(const_cast<char*>(Filename.c_str()), NULL, NULL);
<a name="l00119"></a>00119 <span class="keywordflow">if</span> (myStream == NULL)
<a name="l00120"></a>00120 {
<a name="l00121"></a>00121 std::cerr << <span class="stringliteral">"Failed to read sound file \""</span> << Filename << <span class="stringliteral">"\" (cannot open the file)"</span> << std::endl;
<a name="l00122"></a>00122 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00123"></a>00123 }
<a name="l00124"></a>00124
<a name="l00125"></a>00125 <span class="comment">// Get the music parameters</span>
<a name="l00126"></a>00126 stb_vorbis_info Infos = stb_vorbis_get_info(myStream);
<a name="l00127"></a>00127 ChannelsCount = myChannelsCount = Infos.channels;
<a name="l00128"></a>00128 SampleRate = Infos.sample_rate;
<a name="l00129"></a>00129 NbSamples = <span class="keyword">static_cast<</span>std::size_t<span class="keyword">></span>(stb_vorbis_stream_length_in_samples(myStream) * ChannelsCount);
<a name="l00130"></a>00130
<a name="l00131"></a>00131 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133
<a name="l00134"></a>00134
<a name="l00138"></a>00138 <span class="keywordtype">bool</span> SoundFileOgg::OpenRead(<span class="keyword">const</span> <span class="keywordtype">char</span>* Data, std::size_t SizeInBytes, std::size_t& NbSamples, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& ChannelsCount, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& SampleRate)
<a name="l00139"></a>00139 {
<a name="l00140"></a>00140 <span class="comment">// Close the file if already opened</span>
<a name="l00141"></a>00141 <span class="keywordflow">if</span> (myStream)
<a name="l00142"></a>00142 stb_vorbis_close(myStream);
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="comment">// Open the vorbis stream</span>
<a name="l00145"></a>00145 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* Buffer = <span class="keyword">reinterpret_cast<</span><span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*<span class="keyword">></span>(<span class="keyword">const_cast<</span><span class="keywordtype">char</span>*<span class="keyword">></span>(Data));
<a name="l00146"></a>00146 <span class="keywordtype">int</span> Length = <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(SizeInBytes);
<a name="l00147"></a>00147 myStream = stb_vorbis_open_memory(Buffer, Length, NULL, NULL);
<a name="l00148"></a>00148 <span class="keywordflow">if</span> (myStream == NULL)
<a name="l00149"></a>00149 {
<a name="l00150"></a>00150 std::cerr << <span class="stringliteral">"Failed to read sound file from memory (cannot open the file)"</span> << std::endl;
<a name="l00151"></a>00151 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="comment">// Get the music parameters</span>
<a name="l00155"></a>00155 stb_vorbis_info Infos = stb_vorbis_get_info(myStream);
<a name="l00156"></a>00156 ChannelsCount = myChannelsCount = Infos.channels;
<a name="l00157"></a>00157 SampleRate = Infos.sample_rate;
<a name="l00158"></a>00158 NbSamples = <span class="keyword">static_cast<</span>std::size_t<span class="keyword">></span>(stb_vorbis_stream_length_in_samples(myStream) * ChannelsCount);
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00161"></a>00161 }
<a name="l00162"></a>00162
<a name="l00163"></a>00163
<a name="l00167"></a>00167 std::size_t SoundFileOgg::Read(Int16* Data, std::size_t NbSamples)
<a name="l00168"></a>00168 {
<a name="l00169"></a>00169 <span class="keywordflow">if</span> (myStream && Data && NbSamples)
<a name="l00170"></a>00170 {
<a name="l00171"></a>00171 <span class="keywordtype">int</span> Read = stb_vorbis_get_samples_short_interleaved(myStream, myChannelsCount, Data, static_cast<int>(NbSamples));
<a name="l00172"></a>00172 <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>std::size_t<span class="keyword">></span>(Read * myChannelsCount);
<a name="l00173"></a>00173 }
<a name="l00174"></a>00174 <span class="keywordflow">else</span>
<a name="l00175"></a>00175 {
<a name="l00176"></a>00176 <span class="keywordflow">return</span> 0;
<a name="l00177"></a>00177 }
<a name="l00178"></a>00178 }
<a name="l00179"></a>00179
<a name="l00180"></a>00180 } <span class="comment">// namespace priv</span>
<a name="l00181"></a>00181
<a name="l00182"></a>00182 } <span class="comment">// namespace sf</span>
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