////////////////////////////////////////////////////////////////////////////////
//
// FUNCTION: TestForAnimatedGIF
//
// DESCRIPTION: Check GIF/Image for avialability of animation
//
// RETURNS:
//
// NOTES:
//
// MODIFICATIONS:
//
// Name Date Version Comments
// N T ALMOND 29012002 1.0 Origin
//
////////////////////////////////////////////////////////////////////////////////
bool ImageEx::TestForAnimatedGIF()
{
UINT count = 0;
count = GetFrameDimensionsCount();
GUID* pDimensionIDs = new GUID[count];
// Get the list of frame dimensions from the Image object.
GetFrameDimensionsList(pDimensionIDs, count);
// Get the number of frames in the first dimension.
m_nFrameCount = GetFrameCount(&pDimensionIDs[0]);
// Assume that the image has a property item of type PropertyItemEquipMake.
// Get the size of that property item.
int nSize = GetPropertyItemSize(PropertyTagFrameDelay);
if(nSize>0)
{
// Allocate a buffer to receive the property item.
m_pPropertyItem = (PropertyItem*) malloc(nSize);
GetPropertyItem(PropertyTagFrameDelay, nSize, m_pPropertyItem);
delete pDimensionIDs;
}else
{
XTRACE("GIFͼƬ´íÎó\n");
delete pDimensionIDs;
return false;
}
return true;
}
Image2::Image2(
IN const WCHAR* filename,
GifCallback * call_back,
IN BOOL useEmbeddedColorManagement// = FALSE
)
: Image(filename, useEmbeddedColorManagement)
, m_gif_call_back(call_back)
, m_gif_timer_task(*this)
, m_gif_frame_count(0)
, m_gif_total_delay_time(0)
, m_gif_status(STATUS_STOP)
, m_gif_play_time(0)
, m_gif_play_index(0)
{
// 分析gif中的帧数和每帧之间的间隔时间
int frame_dimension_count = GetFrameDimensionsCount() ;
if (frame_dimension_count > 0)
{
GUID * dimension_ids = new GUID[frame_dimension_count] ;
GetFrameDimensionsList(dimension_ids, frame_dimension_count) ;
m_gif_frame_count = GetFrameCount(dimension_ids) ;
delete [] dimension_ids ;
if (m_gif_frame_count > 1)
{
int property_item_size = GetPropertyItemSize(PropertyTagFrameDelay) ;
PropertyItem * items = (PropertyItem*) new char[property_item_size] ;
GetPropertyItem(PropertyTagFrameDelay, property_item_size, items) ;
UINT i, temp_delayed_time ;
for (i = 0 ; i < m_gif_frame_count ; ++ i)
{
temp_delayed_time = *((UINT*)(items->value) + i) ;
if (temp_delayed_time < 5) temp_delayed_time = 10 ;
m_gif_frame_delay_times.push_back(temp_delayed_time * 10) ;
m_gif_total_delay_time += (temp_delayed_time * 10) ;
}
delete [] items ;
SelectActiveFrame(0) ;
}
}
}
