IplImage* CvCapture_Android::retrieveFrame( int outputType )
{
IplImage* image = NULL;
cv::Mat m_frameYUV420_ref = m_frameYUV420;
unsigned char *current_frameYUV420=m_frameYUV420_ref.ptr();
//Attention! all the operations in this function below should occupy less time than the period between two frames from camera
if (NULL != current_frameYUV420)
{
if (m_frameFormat == noformat)
{
union {double prop; const char* name;} u;
u.prop = getProperty(CV_CAP_PROP_PREVIEW_FORMAT);
if (0 == strcmp(u.name, "yuv420sp"))
m_frameFormat = yuv420sp;
else if (0 == strcmp(u.name, "yvu420sp"))
m_frameFormat = yvu420sp;
else
m_frameFormat = yuvUnknown;
}
switch(outputType)
{
case CV_CAP_ANDROID_GREY_FRAME:
if (!m_hasGray)
if (!(m_hasGray = convertYUV2Grey(m_width, m_height, current_frameYUV420, m_frameGray.mat)))
return NULL;
image = m_frameGray.getIplImagePtr();
break;
case CV_CAP_ANDROID_COLOR_FRAME_BGR: case CV_CAP_ANDROID_COLOR_FRAME_RGB:
if (!m_hasColor)
if (!(m_hasColor = convertYUV2BGR(m_width, m_height, current_frameYUV420, m_frameColor.mat, outputType == CV_CAP_ANDROID_COLOR_FRAME_RGB, false)))
return NULL;
image = m_frameColor.getIplImagePtr();
break;
case CV_CAP_ANDROID_COLOR_FRAME_BGRA: case CV_CAP_ANDROID_COLOR_FRAME_RGBA:
if (!m_hasColor)
if (!(m_hasColor = convertYUV2BGR(m_width, m_height, current_frameYUV420, m_frameColor.mat, outputType == CV_CAP_ANDROID_COLOR_FRAME_RGBA, true)))
return NULL;
image = m_frameColor.getIplImagePtr();
break;
default:
LOGE("Unsupported frame output format: %d", outputType);
CV_Error( CV_StsOutOfRange, "Output frame format is not supported." );
image = NULL;
break;
}
}
return image;
}
IplImage* CvCapture_Android::retrieveFrame( int outputType )
{
IplImage* image = NULL;
unsigned char *current_frameYUV420i=m_frameYUV420i;
//Attention! all the operations in this function below should occupy less time than the period between two frames from camera
if (NULL != current_frameYUV420i)
{
switch(outputType)
{
case CV_CAP_ANDROID_GREY_FRAME:
if (!m_hasGray)
if (!(m_hasGray = convertYUV420i2Grey(m_width, m_height, current_frameYUV420i, m_frameGray.mat)))
return NULL;
image = m_frameGray.getIplImagePtr();
break;
case CV_CAP_ANDROID_COLOR_FRAME_BGR: case CV_CAP_ANDROID_COLOR_FRAME_RGB:
if (!m_hasColor)
if (!(m_hasColor = convertYUV420i2BGR(m_width, m_height, current_frameYUV420i, m_frameColor.mat, outputType == CV_CAP_ANDROID_COLOR_FRAME_RGB, false)))
return NULL;
image = m_frameColor.getIplImagePtr();
break;
case CV_CAP_ANDROID_COLOR_FRAME_BGRA: case CV_CAP_ANDROID_COLOR_FRAME_RGBA:
if (!m_hasColor)
if (!(m_hasColor = convertYUV420i2BGR(m_width, m_height, current_frameYUV420i, m_frameColor.mat, outputType == CV_CAP_ANDROID_COLOR_FRAME_RGBA, true)))
return NULL;
image = m_frameColor.getIplImagePtr();
break;
default:
LOGE("Unsupported frame output format: %d", outputType);
CV_Error( CV_StsOutOfRange, "Output frame format is not supported." );
image = NULL;
break;
}
}
return image;
}