NativeImagePtr BitmapImage::frameAtIndex(size_t index)
{
if (index >= frameCount())
return 0;
if (index >= m_frames.size() || !m_frames[index].m_frame)
cacheFrame(index);
return m_frames[index].m_frame;
}
bool BitmapImage::frameIsCompleteAtIndex(size_t index)
{
if (index >= frameCount())
return true;
if (index >= m_frames.size() || !m_frames[index].m_haveMetadata)
cacheFrame(index);
return m_frames[index].m_isComplete;
}
bool BitmapImage::ensureFrameIsCached(size_t index)
{
if (index >= frameCount())
return false;
if (index >= m_frames.size() || !m_frames[index].m_frame)
cacheFrame(index);
return true;
}
bool BitmapImage::frameHasAlphaAtIndex(size_t index)
{
if (index >= frameCount())
return true;
if (index >= m_frames.size() || !m_frames[index].m_haveMetadata)
cacheFrame(index);
return m_frames[index].m_hasAlpha;
}
float BitmapImage::frameDurationAtIndex(size_t index)
{
if (index >= frameCount())
return 0;
if (index >= m_frames.size() || !m_frames[index].m_haveMetadata)
cacheFrame(index);
return m_frames[index].m_duration;
}
bool Image::frameHasAlphaAtIndex(size_t index)
{
if (index >= frameCount())
return 0;
if (index >= m_frames.size() || !m_frames[index].m_frame)
cacheFrame(index);
return m_frames[index].m_hasAlpha;
}
bool BitmapImage::ensureFrameIsCached(size_t index, ImageFrameCaching frameCaching)
{
if (index >= frameCount())
return false;
if (index >= m_frames.size()
|| (frameCaching == CacheMetadataAndFrame && !m_frames[index].m_image)
|| (frameCaching == CacheMetadataOnly && !m_frames[index].m_haveMetadata))
cacheFrame(index, 0, frameCaching);
return true;
}
PassNativeImagePtr BitmapImage::copyUnscaledFrameAtIndex(size_t index)
{
if (index >= frameCount())
return nullptr;
if (index >= m_frames.size() || !m_frames[index].m_frame)
cacheFrame(index, 0);
if (!m_frames[index].m_subsamplingLevel)
return CGImageRetain(m_frames[index].m_frame);
return m_source.createFrameAtIndex(index);
}
void FrameManager::processFrame(const sensor_msgs::Image& img){
//ROS_INFO("processFrame ... ");
// caching current frame in memory
cacheFrame(img);
}