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<h1>VideoDevice.h</h1><a href="_video_device_8h.html">Go to the documentation of this file.</a><pre class="fragment"><div>00001 <span class="comment">/*  CVideoDevice: video capture base class</span>
00002 <span class="comment">    part of CamStream: a collection of GUI webcam tools</span>
00003 <span class="comment">    Copyright (C) 2002 Nemosoft Unv.</span>
00004 <span class="comment"></span>
00005 <span class="comment">    This program is free software; you can redistribute it and/or modify</span>
00006 <span class="comment">    it under the terms of the GNU General Public License as published by</span>
00007 <span class="comment">    the Free Software Foundation; either version 2 of the License, or</span>
00008 <span class="comment">    (at your option) any later version.</span>
00009 <span class="comment"></span>
00010 <span class="comment">    This program is distributed in the hope that it will be useful,</span>
00011 <span class="comment">    but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
00012 <span class="comment">    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
00013 <span class="comment">    GNU General Public License for more details.</span>
00014 <span class="comment"></span>
00015 <span class="comment">    You should have received a copy of the GNU General Public License</span>
00016 <span class="comment">    along with this program; if not, write to the Free Software</span>
00017 <span class="comment">    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA</span>
00018 <span class="comment"></span>
00019 <span class="comment">    For questions, remarks, patches, etc. for this program, the author can be</span>
00020 <span class="comment">    reached at camstream@smcc.demon.nl.</span>
00021 <span class="comment">*/</span>
00022 
00023 <span class="preprocessor">#ifndef VIDEO_DEVICE_HPP</span>
00024 <span class="preprocessor"></span><span class="preprocessor">#define VIDEO_DEVICE_HPP</span>
00025 <span class="preprocessor"></span>
00026 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
00027 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="config_8h.html">config.h</a>"</span>
00028 <span class="preprocessor">#endif</span>
00029 <span class="preprocessor"></span>
00030 <span class="preprocessor">#include &lt;qglobal.h&gt;</span>
00031 
00032 <span class="preprocessor">#if (QT_VERSION &gt;= 0x030000)</span>
00033 <span class="preprocessor"></span><span class="preprocessor">#include &lt;qmutex.h&gt;</span>
00034 <span class="preprocessor">#endif</span>
00035 <span class="preprocessor"></span>
00036 <span class="preprocessor">#include &lt;qarray.h&gt;</span>
00037 <span class="preprocessor">#include &lt;qcolor.h&gt;</span>
00038 <span class="preprocessor">#include &lt;qdom.h&gt;</span>
00039 <span class="preprocessor">#include &lt;qimage.h&gt;</span>
00040 <span class="preprocessor">#include &lt;qlist.h&gt;</span>
00041 <span class="preprocessor">#include &lt;qobject.h&gt;</span>
00042 <span class="preprocessor">#include &lt;qsocketnotifier.h&gt;</span>
00043 <span class="preprocessor">#include &lt;qtimer.h&gt;</span>
00044 <span class="preprocessor">#include &lt;qthread.h&gt;</span>
00045 <span class="preprocessor">#include &lt;qvector.h&gt;</span>
00046 
00047 <span class="preprocessor">#include "<a class="code" href="_video_frame_8h.html">VideoFrame.h</a>"</span>
00048 
00049 <span class="preprocessor">#include "<a class="code" href="_t_v_channel_8h.html">TVChannel.h</a>"</span>
00050 
00051 <span class="keyword">class </span><a class="code" href="class_c_channel_editor_dlg.html">CChannelEditorDlg</a>;
00052 
<a name="l00053"></a><a class="code" href="class_c_video_device.html">00053</a> <span class="keyword">class </span><a class="code" href="class_c_video_device.html">CVideoDevice</a>: <span class="keyword">public</span> QObject, <span class="keyword">protected</span> QThread
00054 {
00055 <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="class_c_video_collector.html">CVideoCollector</a>;
00056    Q_OBJECT
00057 <span class="keyword">public</span>:
<a name="l00058"></a><a class="code" href="class_c_video_device.html#w3">00058</a>    <span class="keyword">enum</span> <a class="code" href="class_c_video_device.html#w3">Signals</a> {
00059      <a class="code" href="class_c_video_device.html#w3w0">frame_ready</a> = 1,
00060    };
00061 
00062 <span class="keyword">private</span>:
00063    <span class="keyword">enum</span> Palettes {
00064      RGB,
00065      YUV,
00066    };
00067 
00068    QList&lt;CVideoFrame&gt; m_VideoFrames;
00069    QList&lt;CVideoFrame&gt; m_EmptyFrames, m_FullFrames;
00070    <a class="code" href="class_c_video_frame.html">CVideoFrame</a> *m_pFillFrame;   
00071    QMutex m_BufMutex;           
00072 
00073    QWaitCondition m_WaitFromFrame;
00074    <a class="code" href="class_c_channel_editor_dlg.html">CChannelEditorDlg</a> *m_pTunerDlg;
00075 
00076    <span class="keywordtype">int</span> m_CaptureCount;
00077 
00078    <span class="keywordtype">void</span> IncrementPalette(Palettes);
00079    <span class="keywordtype">void</span> DecrementPalette(Palettes);
00080 
00081    <span class="keywordtype">void</span> ParseTVChannels(<span class="keyword">const</span> QDomNode &amp;);
00082    <span class="keywordtype">void</span> GetTVChannels(QDomNode &amp;) const;
00083 
00084 private slots:
00085    virtual <span class="keywordtype">void</span> NewFrequency(<span class="keywordtype">float</span>) = 0;
00086            <span class="keywordtype">void</span> NewCurrentChannel();
00087 
00088 protected:
<a name="l00089"></a><a class="code" href="class_c_video_device.html#p0">00089</a>    QList&lt;<a class="code" href="class_t_v_channel.html">TVChannel</a>&gt; m_TVChannels;
00090 
<a name="l00091"></a><a class="code" href="class_c_video_device.html#p1">00091</a>    <span class="keywordtype">bool</span> m_Validated;
<a name="l00092"></a><a class="code" href="class_c_video_device.html#p4">00092</a>    QString m_NodeName, m_IntfName, m_SerialNumber;
<a name="l00093"></a><a class="code" href="class_c_video_device.html#p8">00093</a>    <span class="keywordtype">bool</span> m_HasDisplayDialog, m_HasFormatDialog, m_HasSourceDialog, m_HasTunerDialog;
<a name="l00094"></a><a class="code" href="class_c_video_device.html#p9">00094</a>    <span class="keywordtype">bool</span> m_Mutable;
00095 
<a name="l00096"></a><a class="code" href="class_c_video_device.html#p10">00096</a>    <span class="keywordtype">int</span> m_OpenCount;
00097 
<a name="l00098"></a><a class="code" href="class_c_video_device.html#p11">00098</a>    <span class="keywordtype">int</span> m_PalRGB;  
<a name="l00099"></a><a class="code" href="class_c_video_device.html#p12">00099</a>    <span class="keywordtype">int</span> m_PalYUV;  
<a name="l00100"></a><a class="code" href="class_c_video_device.html#p13">00100</a>    uint m_RequestedBuffers, m_Buffers;
<a name="l00101"></a><a class="code" href="class_c_video_device.html#p15">00101</a>    <span class="keywordtype">int</span> m_FrameCount;  
<a name="l00102"></a><a class="code" href="class_c_video_device.html#p16">00102</a>    <span class="keywordtype">int</span> m_FrameDropped;
00103 
<a name="l00104"></a><a class="code" href="class_c_video_device.html#p17">00104</a>    QSize m_ImageSize;
<a name="l00105"></a><a class="code" href="class_c_video_device.html#p18">00105</a>    QVector&lt;QImage&gt; m_RGB;
<a name="l00106"></a><a class="code" href="class_c_video_device.html#p19">00106</a>    QVector&lt;QImage&gt; m_Y, m_U, m_V;
<a name="l00107"></a><a class="code" href="class_c_video_device.html#p22">00107</a>    QImage *m_pNullImage;
<a name="l00108"></a><a class="code" href="class_c_video_device.html#p23">00108</a>    QRgb m_GrayScale[256];
00109 
00110    <span class="keywordtype">int</span> GetCaptureCount() const;
00111 
00112    virtual <span class="keywordtype">bool</span> Init() = 0;
00113    virtual <span class="keywordtype">void</span> Exit() = 0;
00114 
00115    virtual <span class="keywordtype">void</span> CreateImagesRGB() = 0;
00116    virtual <span class="keywordtype">void</span> DeleteImagesRGB() = 0;
00117    virtual <span class="keywordtype">void</span> CreateImagesYUV() = 0;
00118    virtual <span class="keywordtype">void</span> DeleteImagesYUV() = 0;
00119 
00120    <span class="keywordtype">void</span> CreateVideoFrames();
00121    <span class="keywordtype">void</span> DeleteVideoFrames();
00122    <a class="code" href="class_c_video_frame.html">CVideoFrame</a> *GetFillFrame();
00123    <span class="keywordtype">void</span> ReturnFillFrame(<span class="keywordtype">bool</span> filled = true);
00124 
00125    virtual <span class="keywordtype">bool</span> StartCapture() = 0;
00126    virtual <span class="keywordtype">void</span> StopCapture() = 0;
00127 
00128    <span class="keywordtype">void</span> SendSignal(Signals s);
00129 
00130 public:
<a name="l00131"></a><a class="code" href="class_c_video_device.html#w4">00131</a>    enum ErrorCodes {
00132      <a class="code" href="class_c_video_device.html#w4w1">NoError</a>,
00133      <a class="code" href="class_c_video_device.html#w4w2">SizeChangeFailed</a>,
00134    };
00135 
00136    <a class="code" href="class_c_video_device.html#a0">CVideoDevice</a>();
00137    <span class="keyword">virtual</span> <a class="code" href="class_c_video_device.html#a1">~CVideoDevice</a>();
00138 
00139    <span class="keyword">virtual</span> <span class="keywordtype">bool</span> event(QEvent *);
00140 
00141    <span class="keyword">virtual</span> <span class="keywordtype">void</span> SetConfiguration(<span class="keyword">const</span> QDomNode &amp;);
00142    <span class="keyword">virtual</span> <span class="keywordtype">void</span> GetConfiguration(QDomNode &amp;) const;
00143 
00144    <span class="keywordtype">bool</span> IsValid() const;
00145    <span class="keywordtype">bool</span> Open(uint buffers = 0);
00146    <span class="keywordtype">void</span> Close();
00147    <span class="keywordtype">bool</span> IsOpen() const;
00148 
00149    virtual <span class="keywordtype">int</span> GetNumberOfInputs() const = 0;
00150 
00162    virtual <span class="keywordtype">void</span> SetInput(<span class="keywordtype">int</span> input) = 0;
00172    virtual <span class="keywordtype">int</span> GetInput() const = 0;
00185    virtual <span class="keywordtype">int</span> GetNumberOfTuners() const = 0;
00196    virtual <span class="keywordtype">void</span> SetTuner(<span class="keywordtype">int</span> tuner) = 0;
00197    virtual <span class="keywordtype">int</span> GetTuner() const = 0;
00198 
00199    <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> GetNumberOfTVChannels() const;
00200    <a class="code" href="class_t_v_channel.html">TVChannel</a> QueryTVChannel(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> preset);
00201    <a class="code" href="class_t_v_channel.html">TVChannel</a> GetCurrentTVChannel() const;
00202    <a class="code" href="class_t_v_channel.html">TVChannel</a> SelectTVChannel(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> preset);
00203    <a class="code" href="class_t_v_channel.html">TVChannel</a> SelectNextTVChannel(<span class="keywordtype">bool</span> wrap = true);
00204    <a class="code" href="class_t_v_channel.html">TVChannel</a> SelectPrevTVChannel(<span class="keywordtype">bool</span> wrap = true);
00205 
00213    virtual <span class="keywordtype">long</span> GetDescriptor() const = 0;
00214 
00215    QString GetNodeName() const;
00216    QString GetIntfName() const;
00217    QString GetSerialNumber() const;
00218 
00219    <span class="keywordtype">int</span> GetBuffers() const;
00220 
00221    <a class="code" href="class_c_video_frame.html">CVideoFrame</a> *GetLatestVideoFrame(<span class="keywordtype">int</span> backlog = 0);
00222 
00223    <span class="keywordtype">bool</span> HasDisplayDialog() const;
00224    <span class="keywordtype">bool</span> HasFormatDialog() const;
00225    <span class="keywordtype">bool</span> HasSourceDialog() const;
00226    <span class="keywordtype">bool</span> HasTunerDialog() const;
00227 
00228    virtual QSize GetSize() const;
00229 
00230    <span class="comment">// Do we need these?</span>
00231    <span class="keywordtype">bool</span> IsMutable() const;
00232    virtual <span class="keywordtype">void</span> Mute(<span class="keywordtype">bool</span> on) const = 0;
00233 
00234 public slots:
00235    virtual <span class="keywordtype">void</span> ShowDisplayDialog() = 0;
00236    virtual <span class="keywordtype">void</span> ShowFormatDialog() = 0;
00237    virtual <span class="keywordtype">void</span> ShowSourceDialog() = 0;
00238    virtual <span class="keywordtype">void</span> ShowTunerDialog();
00239 
00240    <span class="keywordtype">void</span> EnableRGB();
00241    <span class="keywordtype">void</span> DisableRGB();
00242    <span class="keywordtype">void</span> EnableYUV();
00243    <span class="keywordtype">void</span> DisableYUV();
00244 
00245 signals:
00247    <span class="keywordtype">void</span> Opened();
00249    <span class="keywordtype">void</span> Closed();
00251    <span class="keywordtype">void</span> SizeChanged(const QSize &amp;);
00253    <span class="keywordtype">void</span> FramerateChanged(<span class="keywordtype">int</span> rate);
00255    <span class="keywordtype">void</span> Error(<span class="keywordtype">int</span> err_num);
00257    <span class="keywordtype">void</span> FrameReady();
00259    <span class="keywordtype">void</span> TVChannelChanged();
00260 };
00261 
00262 #endif
</div></pre><hr size="1"><address style="align: right;"><small>Generated on Wed Dec 13 23:38:46 2006 for CamStream by
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