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<hr><h1>pwc-ioctl.h</h1><a href="pwc-ioctl_h.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <font class="preprocessor">#ifndef PWC_IOCTL_H</font>
00002 <font class="preprocessor"></font><font class="preprocessor">#define PWC_IOCTL_H</font>
00003 <font class="preprocessor"></font>
00004 <font class="comment">/* These are private ioctl() commands, specific for the Philips webcams.</font>
00005 <font class="comment"> They contain functions not found in other webcams, and settings not</font>
00006 <font class="comment"> specified in the Video4Linux API. </font>
00007 <font class="comment"> </font>
00008 <font class="comment"> The #define names are built up like follows:</font>
00009 <font class="comment"> VIDIOC VIDeo IOCtl prefix</font>
00010 <font class="comment"> PWC Philps WebCam</font>
00011 <font class="comment"> [GS] optional: Get or Set</font>
00012 <font class="comment"> ... The function</font>
00013 <font class="comment"> */</font>
00014
00015 <font class="comment">/* The frame rate is encoded in the video_window.flags parameter,</font>
00016 <font class="comment"> in the high 16 bits, since some flags are defined nowadays. The following</font>
00017 <font class="comment"> defines provide a mask and shift to filter out this value.</font>
00018 <font class="comment"> </font>
00019 <font class="comment"> In 'Snapshot' mode the camera freezes its automatic exposure and colour </font>
00020 <font class="comment"> balance controls.</font>
00021 <font class="comment"> */</font>
<a name="l00022"></a><a class="code" href="pwc-ioctl_h.html#a0">00022</a> <font class="preprocessor">#define PWC_FPS_SHIFT 16</font>
<a name="l00023"></a><a class="code" href="pwc-ioctl_h.html#a1">00023</a> <font class="preprocessor"></font><font class="preprocessor">#define PWC_FPS_MASK 0x00FF0000</font>
<a name="l00024"></a><a class="code" href="pwc-ioctl_h.html#a2">00024</a> <font class="preprocessor"></font><font class="preprocessor">#define PWC_FPS_FRMASK 0x003F0000</font>
<a name="l00025"></a><a class="code" href="pwc-ioctl_h.html#a3">00025</a> <font class="preprocessor"></font><font class="preprocessor">#define PWC_FPS_SNAPSHOT 0x00400000</font>
00026 <font class="preprocessor"></font>
00027 <font class="comment">/* These are private ioctl() commands, specific for the Philips webcams.</font>
00028 <font class="comment"> They contain functions not found in other webcams, and settings not</font>
00029 <font class="comment"> specified in the Video4Linux API. </font>
00030 <font class="comment"> */</font>
00031
00032
00033 <font class="comment">/* Restore user settings */</font>
<a name="l00034"></a><a class="code" href="pwc-ioctl_h.html#a4">00034</a> <font class="preprocessor">#define VIDIOCPWCRUSER _IO('v', 192)</font>
00035 <font class="preprocessor"></font> <font class="comment">/* Save user settings */</font>
<a name="l00036"></a><a class="code" href="pwc-ioctl_h.html#a5">00036</a> <font class="preprocessor">#define VIDIOCPWCSUSER _IO('v', 193)</font>
00037 <font class="preprocessor"></font> <font class="comment">/* Restore factory settings */</font>
<a name="l00038"></a><a class="code" href="pwc-ioctl_h.html#a6">00038</a> <font class="preprocessor">#define VIDIOCPWCFACTORY _IO('v', 194)</font>
00039 <font class="preprocessor"></font>
00040 <font class="comment">/* You can manipulate the compression factor. A compression preference of 0</font>
00041 <font class="comment"> means use uncompressed modes when available; 1 is low compression, 2 is</font>
00042 <font class="comment"> medium and 3 is high compression preferred. Of course, the higher the</font>
00043 <font class="comment"> compression, the lower the bandwidth used but more chance of artefacts</font>
00044 <font class="comment"> in the image. The driver automaticly chooses a higher compression when</font>
00045 <font class="comment"> the preferred mode is not available.</font>
00046 <font class="comment"> */</font>
00047 <font class="comment">/* Set preferred compression quality (0 = uncompressed, 3 = highest compression) */</font>
<a name="l00048"></a><a class="code" href="pwc-ioctl_h.html#a7">00048</a> <font class="preprocessor">#define VIDIOCPWCSCQUAL _IOW('v', 195, int)</font>
00049 <font class="preprocessor"></font> <font class="comment">/* Get preferred compression quality */</font>
<a name="l00050"></a><a class="code" href="pwc-ioctl_h.html#a8">00050</a> <font class="preprocessor">#define VIDIOCPWCGCQUAL _IOR('v', 195, int)</font>
00051 <font class="preprocessor"></font>
00052 <font class="comment">/* Set AGC (Automatic Gain Control); int < 0 = auto, 0..65535 = fixed */</font>
<a name="l00053"></a><a class="code" href="pwc-ioctl_h.html#a9">00053</a> <font class="preprocessor">#define VIDIOCPWCSAGC _IOW('v', 200, int)</font>
00054 <font class="preprocessor"></font> <font class="comment">/* Get AGC; int < 0 = auto, >= 0 = fixed. range 0..65535 */</font>
<a name="l00055"></a><a class="code" href="pwc-ioctl_h.html#a10">00055</a> <font class="preprocessor">#define VIDIOCPWCGAGC _IOR('v', 200, int)</font>
00056 <font class="preprocessor"></font>
<a name="l00057"></a><a class="code" href="pwc-ioctl_h.html#a11">00057</a> <font class="preprocessor">#define VIDIOCPWCSSHUTTER _IOW('v', 201, int)</font>
00058 <font class="preprocessor"></font>
00059 <font class="preprocessor">#endif</font>
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