src/add-ons/media/media-add-ons/usb_webcam/CamSensor.cpp

   1 /*
   2  * Copyright 2004-2008, François Revol, <revol@free.fr>.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6 #include "CamSensor.h"
   7 #include "CamDebug.h"
   8
   9
  10 CamSensor::CamSensor(CamDevice *_camera)
  11         : fInitStatus(B_NO_INIT),
  12           fIsBigEndian(false),
  13           fTransferEnabled(false),
  14           fVideoFrame(),
  15           fLastParameterChanges(0),
  16           fCamDevice(_camera)
  17 {
  18
  19 }
  20
  21
  22 CamSensor::~CamSensor()
  23 {
  24
  25 }
  26
  27
  28 status_t
  29 CamSensor::Probe()
  30 {
  31         // default is to match by USB IDs
  32         return B_OK;
  33 }
  34
  35
  36 status_t
  37 CamSensor::InitCheck()
  38 {
  39         return fInitStatus;
  40 }
  41
  42
  43 status_t
  44 CamSensor::Setup()
  45 {
  46         return fInitStatus;
  47 }
  48
  49
  50 const char *
  51 CamSensor::Name()
  52 {
  53         return "<unknown>";
  54 }
  55
  56
  57 status_t
  58 CamSensor::StartTransfer()
  59 {
  60         fTransferEnabled = true;
  61         return B_OK;
  62 }
  63
  64
  65 status_t
  66 CamSensor::StopTransfer()
  67 {
  68         fTransferEnabled = false;
  69         return B_OK;
  70 }
  71
  72
  73 status_t
  74 CamSensor::AcceptVideoFrame(uint32 &width, uint32 &height)
  75 {
  76         // minimum sanity
  77         if (width < 1)
  78                 width = MaxWidth();
  79         if (height < 1)
  80                 height = MaxHeight();
  81         if (width > MaxWidth())
  82                 width = MaxWidth();
  83         if (height > MaxHeight())
  84                 height = MaxHeight();
  85         return B_OK;
  86 }
  87
  88
  89 status_t
  90 CamSensor::SetVideoFrame(BRect rect)
  91 {
  92         return ENOSYS;
  93 }
  94
  95
  96 status_t
  97 CamSensor::SetVideoParams(float brightness, float contrast, float hue, float red, float green, float blue)
  98 {
  99         return ENOSYS;
 100 }
 101
 102
 103 void
 104 CamSensor::AddParameters(BParameterGroup *group, int32 &index)
 105 {
 106         fFirstParameterID = index;
 107 }
 108
 109 status_t
 110 CamSensor::GetParameterValue(int32 id, bigtime_t *last_change, void *value, size_t *size)
 111 {
 112         return B_BAD_VALUE;
 113 }
 114
 115 status_t
 116 CamSensor::SetParameterValue(int32 id, bigtime_t when, const void *value, size_t size)
 117 {
 118         return B_BAD_VALUE;
 119 }
 120
 121
 122 CamDevice *
 123 CamSensor::Device()
 124 {
 125         return fCamDevice;
 126 }
 127
 128
 129 status_t
 130 CamSensor::ProbeByIICSignature(const uint8 *regList, const uint8 *matchList,
 131         size_t count)
 132 {
 133         for (int i = 0; i < count; i++) {
 134                 uint8 value = 0;
 135                 ssize_t len;
 136                 len = Device()->ReadIIC8(regList[i], &value);
 137                 PRINT((CH ": ReadIIC8 = %d val = %d" CT, len, value));
 138                 if (len < 1)
 139                         return ENODEV;
 140                 if (value != matchList[i])
 141                         return ENODEV;
 142         }
 143         return B_OK;
 144 }