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Made changes in Android camera classes: now we can get list of possible preview resolutions of Android camera (as string).

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Also now work of Android camera is more accurate in the case when the size of grabbed frame buffer does not consist with the expected frame size.
This commit is contained in:
Leonid Beynenson 2011-05-10 12:29:43 +00:00
parent f4c74eb532
commit 7ec77593db
2 changed files with 24 additions and 7 deletions
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1
modules/highgui/include/opencv2/highgui/highgui_c.h
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@ -354,6 +354,7 @@ enum
CV_CAP_PROP_WHITE_BALANCE_RED_V =26,
CV_CAP_PROP_MAX_DC1394 =27,
CV_CAP_PROP_AUTOGRAB =1024, // property for highgui class CvCapture_Android only
CV_CAP_PROP_SUPPORTED_PREVIEW_SIZES_STRING=1025, // tricky property, returns cpnst char* indeed
// OpenNI map generators
CV_CAP_OPENNI_DEPTH_GENERATOR = 0,
CV_CAP_OPENNI_IMAGE_GENERATOR = 1 << 31,

30
modules/highgui/src/cap_android.cpp
View File

@ -145,9 +145,6 @@ public:
m_capture->setFrame(buffer, bufferSize);
m_capture->m_dataState = CvCapture_Android::CVCAPTURE_ANDROID_STATE_HAS_NEW_FRAME_UNGRABBED;
m_capture->m_waitingNextFrame = false;//set flag that no more frames required at this moment
pthread_cond_broadcast(&m_capture->m_nextFrameCond);
pthread_mutex_unlock(&m_capture->m_nextFrameMutex);
}
@ -255,6 +252,9 @@ double CvCapture_Android::getProperty( int propIdx )
return (double)m_activity->getFrameWidth();
case CV_CAP_PROP_FRAME_HEIGHT:
return (double)m_activity->getFrameHeight();
case CV_CAP_PROP_SUPPORTED_PREVIEW_SIZES_STRING:
return (double)m_activity->getProperty(ANDROID_CAMERA_PROPERTY_SUPPORTED_PREVIEW_SIZES_STRING);
default:
CV_Error( CV_StsOutOfRange, "Failed attempt to GET unsupported camera property." );
break;
@ -296,8 +296,10 @@ bool CvCapture_Android::setProperty( int propIdx, double propValue )
bool CvCapture_Android::grabFrame()
{
if( !isOpened() )
return false;
if( !isOpened() ) {
LOGE("CvCapture_Android::grabFrame(): camera is not opened");
return false;
}
bool res=false;
pthread_mutex_lock(&m_nextFrameMutex);
@ -314,6 +316,7 @@ bool CvCapture_Android::grabFrame()
}
if (m_dataState == CVCAPTURE_ANDROID_STATE_HAS_NEW_FRAME_UNGRABBED) {
LOGD("CvCapture_Android::grabFrame: get new frame");
//swap current and new frames
unsigned char* tmp = m_frameYUV420i;
m_frameYUV420i = m_frameYUV420inext;
@ -327,8 +330,11 @@ bool CvCapture_Android::grabFrame()
m_framesGrabbed++;
res=true;
} else {
LOGE("CvCapture_Android::grabFrame: NO new frame");
}
int res_unlock=pthread_mutex_unlock(&m_nextFrameMutex);
if (res_unlock) {
LOGE("Error in CvCapture_Android::grabFrame: pthread_mutex_unlock returned %d --- probably, this object has been destroyed", res_unlock);
@ -394,6 +400,7 @@ void CvCapture_Android::setFrame(const void* buffer, int bufferSize)
//copy data
memcpy(m_frameYUV420inext, buffer, bufferSize);
LOGD("CvCapture_Android::setFrame -- memcpy is done");
#if 0 //moved this part of code into grabFrame
//swap current and new frames
@ -405,21 +412,30 @@ void CvCapture_Android::setFrame(const void* buffer, int bufferSize)
m_hasGray = false;
m_hasColor = false;
#endif
m_dataState = CVCAPTURE_ANDROID_STATE_HAS_NEW_FRAME_UNGRABBED;
m_waitingNextFrame = false;//set flag that no more frames required at this moment
}
//Attention: this method should be called inside pthread_mutex_lock(m_nextFrameMutex) only
void CvCapture_Android::prepareCacheForYUV420i(int width, int height)
{
if (width != m_width || height != m_height)
{
LOGD("CvCapture_Android::prepareCacheForYUV420i: Changing size of buffers: from width=%d height=%d to width=%d height=%d", m_width, m_height, width, height);
m_width = width;
m_height = height;
unsigned char *tmp = m_frameYUV420inext;
m_frameYUV420inext = new unsigned char [width * height * 3 / 2];
delete[] tmp;
if (tmp != NULL) {
delete[] tmp;
}
tmp = m_frameYUV420i;
m_frameYUV420i = new unsigned char [width * height * 3 / 2];
delete[] tmp;
if (tmp != NULL) {
delete[] tmp;
}
}
}