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<title>Camstream: CamStream API documentation</title>
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<h1>AudioDevice.h</h1><a href="_audio_device_8h.html">Go to the documentation of this file.</a><pre class="fragment"><div>00001 <span class="comment">/* audiodevs: Abstraction layer for audio hardware & samples</span>
00002 <span class="comment"> Copyright (C) 2003-2004 Nemosoft Unv.</span>
00003 <span class="comment"></span>
00004 <span class="comment"> This program is free software; you can redistribute it and/or modify</span>
00005 <span class="comment"> it under the terms of the GNU General Public License as published by</span>
00006 <span class="comment"> the Free Software Foundation; either version 2 of the License, or</span>
00007 <span class="comment"> (at your option) any later version.</span>
00008 <span class="comment"></span>
00009 <span class="comment"> This program is distributed in the hope that it will be useful,</span>
00010 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
00011 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
00012 <span class="comment"> GNU General Public License for more details.</span>
00013 <span class="comment"></span>
00014 <span class="comment"> You should have received a copy of the GNU General Public License</span>
00015 <span class="comment"> along with this program; if not, write to the Free Software</span>
00016 <span class="comment"> Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
00017 <span class="comment"></span>
00018 <span class="comment"> For questions, remarks, patches, etc. for this program, the author can be</span>
00019 <span class="comment"> reached at camstream@smcc.demon.nl.</span>
00020 <span class="comment">*/</span>
00021
00022 <span class="preprocessor">#ifndef AUDIODEVICE_HPP</span>
00023 <span class="preprocessor"></span><span class="preprocessor">#define AUDIODEVICE_HPP</span>
00024 <span class="preprocessor"></span>
00025 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
00026 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="config_8h.html">config.h</a>"</span>
00027 <span class="preprocessor">#endif</span>
00028 <span class="preprocessor"></span>
00029 <span class="preprocessor">#include <qglobal.h></span>
00030
00031 <span class="preprocessor">#if (QT_VERSION >= 0x030000)</span>
00032 <span class="preprocessor"></span><span class="preprocessor">#include <qmutex.h></span>
00033 <span class="preprocessor">#endif</span>
00034 <span class="preprocessor"></span>
00035 <span class="preprocessor">#include <qdom.h></span>
00036 <span class="preprocessor">#include <qobject.h></span>
00037 <span class="preprocessor">#include <qthread.h></span>
00038
00039 <span class="preprocessor">#include "<a class="code" href="_audio_ring_buffer_8h.html">AudioRingBuffer.h</a>"</span>
00040 <span class="preprocessor">#include "<a class="code" href="_sound_attributes_8h.html">SoundAttributes.h</a>"</span>
00041
<a name="l00042"></a><a class="code" href="class_c_audio_device.html">00042</a> <span class="keyword">class </span><a class="code" href="class_c_audio_device.html">CAudioDevice</a>: <span class="keyword">public</span> QObject, <span class="keyword">public</span> QThread
00043 {
00044 <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="class_c_audio_collector.html">CAudioCollector</a>;
00045 Q_OBJECT
00046 <span class="keyword">public</span>:
<a name="l00047"></a><a class="code" href="class_c_audio_device.html#w2">00047</a> <span class="keyword">enum</span> <a class="code" href="class_c_audio_device.html#w2">Mode</a> { <a class="code" href="class_c_audio_device.html#w2w0">Capture</a>, <a class="code" href="class_c_audio_device.html#w2w1">Playback</a> };
00048
00049 <span class="keyword">private</span>:
00050 Mode m_Mode;
00051 <span class="keywordtype">int</span> m_OpenCount;
00052 <span class="keywordtype">int</span> m_CaptureCount, m_PlaybackCount;
00053
00054 <span class="keyword">private</span> slots:
00055 <span class="keywordtype">void</span> EnableCapture();
00056 <span class="keywordtype">void</span> DisableCapture();
00057 <span class="keywordtype">void</span> EnablePlayback();
00058 <span class="keywordtype">void</span> DisablePlayback();
00059
00060 <span class="keyword">protected</span>:
<a name="l00061"></a><a class="code" href="class_c_audio_device.html#p0">00061</a> QString <a class="code" href="class_c_audio_device.html#p0">m_ShortName</a>, <a class="code" href="class_c_audio_device.html#p1">m_LongName</a>;
<a name="l00062"></a><a class="code" href="class_c_audio_device.html#p2">00062</a> QString <a class="code" href="class_c_audio_device.html#p2">m_NodeName</a>;
<a name="l00063"></a><a class="code" href="class_c_audio_device.html#p3">00063</a> <span class="keywordtype">bool</span> <a class="code" href="class_c_audio_device.html#p3">m_Validated</a>;
00064
<a name="l00065"></a><a class="code" href="class_c_audio_device.html#p4">00065</a> <a class="code" href="struct_sound_attributes.html">SoundAttributes</a> <a class="code" href="class_c_audio_device.html#p4">m_CurrentSoundAttr</a>;
<a name="l00066"></a><a class="code" href="class_c_audio_device.html#p6">00066</a> <a class="code" href="class_c_ring_buffer.html">CRingBuffer</a> <a class="code" href="class_c_audio_device.html#p5">m_CaptureBuffer</a>, <a class="code" href="class_c_audio_device.html#p6">m_PlaybackBuffer</a>;
00067
00068 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code" href="class_c_audio_device.html#b0">Init</a>() = 0;
00069 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_c_audio_device.html#b1">Exit</a>() = 0;
00070
00071 <span class="keyword">virtual</span> <span class="keywordtype">int</span> <a class="code" href="class_c_audio_device.html#b2">StartCapture</a>() = 0;
00072 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_c_audio_device.html#b3">StopCapture</a>() = 0;
00073 <span class="keyword">virtual</span> <span class="keywordtype">int</span> <a class="code" href="class_c_audio_device.html#b4">StartPlayback</a>() = 0;
00074 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_c_audio_device.html#b5">StopPlayback</a>() = 0;
00075
<a name="l00076"></a><a class="code" href="class_c_audio_device.html#b6">00076</a> <a class="code" href="class_c_audio_device.html#w2">Mode</a> <a class="code" href="class_c_audio_device.html#b6">GetMode</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> m_Mode; };
<a name="l00077"></a><a class="code" href="class_c_audio_device.html#b7">00077</a> <span class="keywordtype">int</span> <a class="code" href="class_c_audio_device.html#b7">GetCaptureCount</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> m_CaptureCount; };
<a name="l00078"></a><a class="code" href="class_c_audio_device.html#b8">00078</a> <span class="keywordtype">int</span> <a class="code" href="class_c_audio_device.html#b8">GetPlaybackCount</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> m_PlaybackCount; };
00079
00080 <span class="keyword">public</span>:
00081 <a class="code" href="class_c_audio_device.html#a0">CAudioDevice</a>();
00082 <span class="keyword">virtual</span> <a class="code" href="class_c_audio_device.html#a1">~CAudioDevice</a>();
00083
00084 QString <a class="code" href="class_c_audio_device.html#a2">GetName</a>() const;
00085 QString GetLongName() const;
00086 QString GetNodeName() const;
00087
00088 <span class="keywordtype">bool</span> IsValid() const;
00089 <span class="keywordtype">bool</span> Open(Mode m);
00090 <span class="keywordtype">void</span> Close();
00091 <span class="keywordtype">bool</span> IsOpen() const;
00092
00093 <span class="keywordtype">bool</span> SetSoundAttributes(const <a class="code" href="struct_sound_attributes.html">SoundAttributes</a> &);
00094 SoundAttributes GetSoundAttributes() const;
00095
00096 <a class="code" href="class_c_audio_ring_buffer_reader.html">CAudioRingBufferReader</a> *CreateReader();
00097 <a class="code" href="class_c_ring_buffer_writer.html">CRingBufferWriter</a> *CreateWriter();
00098
00099 virtual <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> GetPlaybackPointer() const = 0;
00100
00101 virtual <span class="keywordtype">void</span> SetBufferLength(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> len, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> chunk_length = 0) = 0;
00102 virtual <span class="keywordtype">void</span> SetBufferTime(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> ms, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> chunk_length = 0) = 0;
00103 <span class="comment">// virtual int WriteDirectly(const void *, unsigned int len) = 0;</span>
00104
00106 virtual <span class="keywordtype">void</span> ShowMixerControls() = 0;
00107
00108 virtual <span class="keywordtype">void</span> GetMixerSettings(QDomNode &) const = 0;
00109 virtual <span class="keywordtype">void</span> SetMixerSettings(const QDomNode &) const = 0;
00110
00111 signals:
00112 <span class="keywordtype">void</span> Opened();
00113 <span class="keywordtype">void</span> Closed();
00114
00123 <span class="keywordtype">void</span> SoundAttributesChanged(const SoundAttributes &);
00124 };
00125
00126
00127 #endif
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