int V4Linux2Camera::getCameraSetting(int mode) {
if (!hasCameraSetting(mode)) return 0;
v4l2_control v4l2_ctrl;
switch (mode) {
case BRIGHTNESS: v4l2_ctrl.id = V4L2_CID_BRIGHTNESS; break;
case CONTRAST: v4l2_ctrl.id = V4L2_CID_CONTRAST; break;
case SHARPNESS: v4l2_ctrl.id = V4L2_CID_SHARPNESS; break;
case GAIN: v4l2_ctrl.id = V4L2_CID_GAIN; break;
case AUTO_GAIN: v4l2_ctrl.id = V4L2_CID_AUTOGAIN; break;
case EXPOSURE: v4l2_ctrl.id = V4L2_CID_EXPOSURE_ABSOLUTE; break;
case AUTO_EXPOSURE: return getCameraSettingAuto(EXPOSURE); break;
case WHITE: v4l2_ctrl.id = V4L2_CID_WHITE_BALANCE_TEMPERATURE; break;
case AUTO_WHITE: v4l2_ctrl.id = V4L2_CID_AUTO_WHITE_BALANCE; break;
case FOCUS: v4l2_ctrl.id = V4L2_CID_FOCUS_ABSOLUTE; break;
case AUTO_FOCUS: return getCameraSettingAuto(FOCUS);
case BACKLIGHT: v4l2_ctrl.id = V4L2_CID_BACKLIGHT_COMPENSATION; break;
case POWERLINE: v4l2_ctrl.id = V4L2_CID_POWER_LINE_FREQUENCY; break;
case GAMMA: v4l2_ctrl.id = V4L2_CID_GAMMA; break;
case SATURATION: v4l2_ctrl.id = V4L2_CID_SATURATION; break;
case COLOR_HUE: v4l2_ctrl.id = V4L2_CID_HUE; break;
case AUTO_HUE: v4l2_ctrl.id = V4L2_CID_HUE_AUTO; break;
case COLOR_RED: v4l2_ctrl.id = V4L2_CID_RED_BALANCE; break;
case COLOR_BLUE: v4l2_ctrl.id = V4L2_CID_BLUE_BALANCE; break;
default: return 0;
}
if ((ioctl(dev_handle, VIDIOC_G_CTRL, &v4l2_ctrl)) < 0) {
return 0;
} else return v4l2_ctrl.value;
}
void CameraEngine::updateSettings() {
int brightness = getCameraSetting(BRIGHTNESS);
if (brightness==getMinCameraSetting(BRIGHTNESS)) config.brightness=SETTING_MIN;
if (brightness==getMaxCameraSetting(BRIGHTNESS)) config.brightness=SETTING_MAX;
if (brightness==getDefaultCameraSetting(BRIGHTNESS)) config.brightness=SETTING_DEFAULT;
//printf("brightness %d\n",brightness);
int contrast = getCameraSetting(CONTRAST);
if (contrast==getMinCameraSetting(CONTRAST)) config.contrast=SETTING_MIN;
if (contrast==getMaxCameraSetting(CONTRAST)) config.contrast=SETTING_MAX;
if (contrast==getDefaultCameraSetting(CONTRAST)) config.contrast=SETTING_DEFAULT;
//printf("contrast %d\n",contrast);
int gain = getCameraSetting(GAIN);
if (gain==getMinCameraSetting(GAIN)) config.gain=SETTING_MIN;
if (gain==getMaxCameraSetting(GAIN)) config.gain=SETTING_MAX;
if (gain==getDefaultCameraSetting(GAIN)) config.gain=SETTING_DEFAULT;
//printf("gain %d\n",gain);
int exposure = getCameraSetting(EXPOSURE);
if (exposure==getMinCameraSetting(EXPOSURE)) config.exposure=SETTING_MIN;
if (exposure==getMaxCameraSetting(EXPOSURE)) config.exposure=SETTING_MAX;
if (getCameraSettingAuto(EXPOSURE)==true) config.exposure=SETTING_AUTO;
if (exposure==getDefaultCameraSetting(EXPOSURE)) config.exposure=SETTING_DEFAULT;
//printf("exposure %d\n",exposure);
int sharpness = getCameraSetting(SHARPNESS);
if (sharpness==getMinCameraSetting(SHARPNESS)) config.sharpness=SETTING_MIN;
if (sharpness==getMaxCameraSetting(SHARPNESS)) config.sharpness=SETTING_MAX;
if (sharpness==getDefaultCameraSetting(SHARPNESS)) config.sharpness=SETTING_DEFAULT;
//printf("sharpness %d\n",sharpness);
int focus = getCameraSetting(FOCUS);
if (focus==getMinCameraSetting(FOCUS)) config.focus=SETTING_MIN;
if (focus==getMaxCameraSetting(FOCUS)) config.focus=SETTING_MAX;
if (focus==getDefaultCameraSetting(FOCUS)) config.focus=SETTING_DEFAULT;
//printf("focus %d\n",focus);
int gamma = getCameraSetting(GAMMA);
if (gamma==getMinCameraSetting(GAMMA)) config.gamma=SETTING_MIN;
if (gamma==getMaxCameraSetting(GAMMA)) config.gamma=SETTING_MAX;
if (gamma==getDefaultCameraSetting(GAMMA)) config.gamma=SETTING_DEFAULT;
if (getCameraSettingAuto(GAMMA)==true) config.gamma=SETTING_AUTO;
//printf("gamma %d\n",gamma);
}