plugins/vidinput_v4l2/vidinput_v4l2.h

   1 #ifndef _PVIDEOIOV4L2
   2 #define _PVIDEOIOV4L2
   3
   4
   5 #include <sys/mman.h>
   6 #include <sys/time.h>
   7
   8 #include <ptlib.h>
   9 #include <ptlib/videoio.h>
  10 #include <ptlib/vconvert.h>
  11
  12 #include <linux/videodev.h>
  13
  14
  15 class PVideoInputV4l2Device: public PVideoInputDevice
  16 {
  17
  18   PCLASSINFO(PVideoInputV4l2Device, PVideoInputDevice);
  19
  20
  21 public:
  22   PVideoInputV4l2Device();
  23   ~PVideoInputV4l2Device();
  24
  25   void ReadDeviceDirectory (PDirectory, POrdinalToString &);
  26
  27   static PStringList GetInputDeviceNames();
  28
  29   PStringList GetDeviceNames() const
  30   { return GetInputDeviceNames(); }
  31
  32   BOOL Open(const PString &deviceName, BOOL startImmediate);
  33
  34   BOOL IsOpen();
  35
  36   BOOL Close();
  37
  38   BOOL Start();
  39   BOOL Stop();
  40
  41   BOOL IsCapturing();
  42
  43   PINDEX GetMaxFrameBytes();
  44
  45   BOOL GetFrame(PBYTEArray & frame);
  46   BOOL GetFrameData(BYTE*, PINDEX*);
  47   BOOL GetFrameDataNoDelay(BYTE*, PINDEX*);
  48
  49   BOOL GetFrameSizeLimits(unsigned int&, unsigned int&,
  50                           unsigned int&, unsigned int&);
  51
  52   BOOL TestAllFormats();
  53
  54   BOOL SetFrameSize(unsigned int, unsigned int);
  55   BOOL SetFrameRate(unsigned int);
  56   BOOL VerifyHardwareFrameSize(unsigned int, unsigned int);
  57
  58   BOOL GetParameters(int*, int*, int*, int*, int*);
  59
  60   BOOL SetColourFormat(const PString&);
  61
  62   int GetContrast();
  63   BOOL SetContrast(unsigned int);
  64   int GetBrightness();
  65   BOOL SetBrightness(unsigned int);
  66   int GetWhiteness();
  67   BOOL SetWhiteness(unsigned int);
  68   int GetColour();
  69   BOOL SetColour(unsigned int);
  70   int GetHue();
  71   BOOL SetHue(unsigned int);
  72
  73   BOOL SetVideoChannelFormat(int, PVideoDevice::VideoFormat);
  74   BOOL SetVideoFormat(PVideoDevice::VideoFormat);
  75   int GetNumChannels();
  76   BOOL SetChannel(int);
  77
  78   BOOL NormalReadProcess(BYTE*, PINDEX*);
  79
  80   void ClearMapping();
  81
  82   BOOL SetMapping();
  83
  84   struct v4l2_capability videoCapability;
  85   struct v4l2_streamparm videoStreamParm;
  86   BOOL   canRead;
  87   BOOL   canStream;
  88   BOOL   canSelect;
  89   BOOL   canSetFrameRate;
  90   BOOL   isMapped;
  91 #define NUM_VIDBUF 4
  92   BYTE * videoBuffer[NUM_VIDBUF];
  93   uint    videoBufferCount;
  94
  95   int    videoFd;
  96   int    frameBytes;
  97   BOOL   started;
  98 };
  99
 100 #endif