///Loads all the Camera related properties
status_t CameraProperties::loadProperties()
{
// LOG_FUNCTION_NAME;
status_t ret = NO_ERROR;
//Must be re-initialized here, since loadProperties() could potentially be called more than once.
mCamerasSupported = 0;
// adapter updates capabilities and we update camera count
const status_t err = CameraAdapter_Capabilities(mCameraProps, mCamerasSupported,
MAX_CAMERAS_SUPPORTED, mCamerasSupported);
if(err != NO_ERROR) {
CAMHAL_LOGE("error while getting capabilities");
ret = UNKNOWN_ERROR;
} else if (mCamerasSupported == 0) {
CAMHAL_LOGE("camera busy. properties not loaded. num_cameras = %d", mCamerasSupported);
ret = UNKNOWN_ERROR;
} else if (mCamerasSupported > MAX_CAMERAS_SUPPORTED) {
CAMHAL_LOGE("returned too many adapaters");
ret = UNKNOWN_ERROR;
} else {
CAMHAL_LOGI("num_cameras = %d", mCamerasSupported);
for (int i = 0; i < mCamerasSupported; i++) {
mCameraProps[i].setSensorIndex(i);
mCameraProps[i].dump();
}
}
CAMHAL_LOGV("mCamerasSupported = %d", mCamerasSupported);
// LOG_FUNCTION_NAME_EXIT;
return ret;
}
bool CameraHal::parsePair(const char *str, int *first, int *second, char delim)
{
// Find the first integer.
char *end;
int w = (int)strtol(str, &end, 10);
// If a delimeter does not immediately follow, give up.
if (*end != delim) {
CAMHAL_LOGE("Cannot find delimeter (%c) in str=%s", delim, str);
return false;
}
// Find the second integer, immediately after the delimeter.
int h = (int)strtol(end+1, &end, 10);
*first = w;
*second = h;
return true;
}
status_t V4LCameraAdapter::getCaps(const int sensorId, CameraProperties::Properties* params,
V4L_HANDLETYPE handle) {
status_t status = NO_ERROR;
V4L_TI_CAPTYPE caps;
int i = 0;
int j = 0;
struct v4l2_fmtdesc fmtDesc;
struct v4l2_frmsizeenum frmSizeEnum;
struct v4l2_frmivalenum frmIvalEnum;
//get supported pixel formats
for ( i = 0; status == NO_ERROR; i++) {
fmtDesc.index = i;
fmtDesc.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
status = ioctl (handle, VIDIOC_ENUM_FMT, &fmtDesc);
if (status == NO_ERROR) {
CAMHAL_LOGDB("fmtDesc[%d].description::pixelformat::flags== (%s::%d::%d)",i, fmtDesc.description,fmtDesc.pixelformat,fmtDesc.flags);
caps.ePreviewFormats[i] = fmtDesc.pixelformat;
}
}
caps.ulPreviewFormatCount = i;
//get preview sizes & capture image sizes
status = NO_ERROR;
for ( i = 0; status == NO_ERROR; i++) {
frmSizeEnum.index = i;
//Check for frame sizes for default pixel format
//TODO: Check for frame sizes for all supported pixel formats
frmSizeEnum.pixel_format = V4L2_PIX_FMT_YUYV;
status = ioctl (handle, VIDIOC_ENUM_FRAMESIZES, &frmSizeEnum);
if (status == NO_ERROR) {
int width;
int height;
if(frmSizeEnum.type != V4L2_FRMSIZE_TYPE_DISCRETE) {
CAMHAL_LOGDB("\nfrmSizeEnum.type = %d", frmSizeEnum.type);
CAMHAL_LOGDB("\nmin_width x height = %d x %d ",frmSizeEnum.stepwise.min_width, frmSizeEnum.stepwise.min_height);
CAMHAL_LOGDB("\nmax_width x height = %d x %d ",frmSizeEnum.stepwise.max_width, frmSizeEnum.stepwise.max_height);
CAMHAL_LOGDB("\nstep width x height = %d x %d ",frmSizeEnum.stepwise.step_width,frmSizeEnum.stepwise.step_height);
//TODO: validate populating the sizes when type = V4L2_FRMSIZE_TYPE_STEPWISE
width = frmSizeEnum.stepwise.max_width;
height = frmSizeEnum.stepwise.max_height;
}
else {
CAMHAL_LOGDB("frmSizeEnum.index[%d].width x height == (%d x %d)", i, frmSizeEnum.discrete.width, frmSizeEnum.discrete.height);
width = frmSizeEnum.discrete.width;
height = frmSizeEnum.discrete.height;
}
caps.tCaptureRes[i].width = width;
caps.tCaptureRes[i].height = height;
caps.tPreviewRes[i].width = width;
caps.tPreviewRes[i].height = height;
snprintf(caps.tPreviewRes[i].param, MAX_RES_STRING_LENGTH,"%dx%d",caps.tPreviewRes[i].width,caps.tPreviewRes[i].height);
snprintf(caps.tCaptureRes[i].param, MAX_RES_STRING_LENGTH,"%dx%d",caps.tCaptureRes[i].width,caps.tCaptureRes[i].height);
}
else {
caps.ulCaptureResCount = i;
caps.ulPreviewResCount = i;
}
}
//sort the preview sizes in ascending order
sortAscend(caps, caps.ulPreviewResCount);
//get supported frame rates
bool fps30 = false;
for ( j=caps.ulPreviewResCount-1; j >= 0; j--) {
CAMHAL_LOGDB(" W x H = %d x %d", caps.tPreviewRes[j].width, caps.tPreviewRes[j].height);
status = NO_ERROR;
for ( i = 0; status == NO_ERROR; i++) {
frmIvalEnum.index = i;
//Check for supported frame rates for the default pixel format.
frmIvalEnum.pixel_format = V4L2_PIX_FMT_YUYV;
frmIvalEnum.width = caps.tPreviewRes[j].width;
frmIvalEnum.height = caps.tPreviewRes[j].height;
status = ioctl (handle, VIDIOC_ENUM_FRAMEINTERVALS, &frmIvalEnum);
if (status == NO_ERROR) {
if(frmIvalEnum.type != V4L2_FRMIVAL_TYPE_DISCRETE) {
CAMHAL_LOGDB("frmIvalEnum[%d].type = %d)", i, frmIvalEnum.type);
CAMHAL_LOGDB("frmIvalEnum[%d].stepwise.min = %d/%d)", i, frmIvalEnum.stepwise.min.denominator, frmIvalEnum.stepwise.min.numerator);
CAMHAL_LOGDB("frmIvalEnum[%d].stepwise.max = %d/%d)", i, frmIvalEnum.stepwise.max.denominator, frmIvalEnum.stepwise.max.numerator);
CAMHAL_LOGDB("frmIvalEnum[%d].stepwise.step = %d/%d)", i, frmIvalEnum.stepwise.step.denominator, frmIvalEnum.stepwise.step.numerator);
caps.ulFrameRates[i] = (frmIvalEnum.stepwise.max.denominator/frmIvalEnum.stepwise.max.numerator);
}
else {
CAMHAL_LOGDB("frmIvalEnum[%d].frame rate= %d)",i, (frmIvalEnum.discrete.denominator/frmIvalEnum.discrete.numerator));
caps.ulFrameRates[i] = (frmIvalEnum.discrete.denominator/frmIvalEnum.discrete.numerator);
}
if (caps.ulFrameRates[i] == 30) {
fps30 = true;
}
}
else if (i == 0) {
// Framerate reporting is not guaranteed in V4L2 implementation.
caps.ulFrameRates[i] = 30;
fps30 = true;
caps.ulFrameRateCount = 1;
} else {
CAMHAL_LOGE("caps.ulFrameRateCount = %d",i);
caps.ulFrameRateCount = i;
}
}
if(fps30) {
break;
}
}
if(frmIvalEnum.type != V4L2_FRMIVAL_TYPE_DISCRETE) {
//TODO: populate the frame rates when type = V4L2_FRMIVAL_TYPE_STEPWISE;
}
//update the preview resolution with the highest resolution which supports 30fps.
/* // for video preview the application choose the resolution from the mediaprofiles.xml.
// so populating all supported preview resolution is required for video mode.
caps.tPreviewRes[0].width = caps.tPreviewRes[j].width;
caps.tPreviewRes[0].height = caps.tPreviewRes[j].height;
snprintf(caps.tPreviewRes[0].param, MAX_RES_STRING_LENGTH,"%dx%d",caps.tPreviewRes[j].width,caps.tPreviewRes[j].height);
caps.ulPreviewResCount = 1;
*/
insertCapabilities (params, caps);
return NO_ERROR;
}
