bool MCGImageImageRep::EnsureBitmap()
{
if (m_bitmap != nil)
return true;
bool t_success;
t_success = true;
MCGRaster t_raster;
if (t_success)
t_success = MCGImageGetRaster(m_frame.image, t_raster);
MCImageBitmap *t_bitmap;
t_bitmap = nil;
if (t_success)
t_success = MCImageBitmapCreateWithPixels(t_raster.pixels, t_raster.stride, t_raster.width, t_raster.height, t_bitmap);
if (t_success)
{
t_bitmap->has_alpha = t_bitmap->has_transparency = t_raster.format == kMCGRasterFormat_ARGB;
if (t_bitmap->has_transparency)
MCImageBitmapUnpremultiply(t_bitmap);
}
if (t_success)
m_bitmap = t_bitmap;
return t_success;
}
bool MCTransformedImageRep::LoadImageFrames(MCImageFrame *&r_frames, uindex_t &r_frame_count)
{
uindex_t t_target_width, t_target_height;
if (!GetGeometry(t_target_width, t_target_height))
return false;
bool t_success = true;
MCImageFrame *t_frames = nil;
uindex_t t_frame_count = 0;
t_frame_count = m_source->GetFrameCount();
t_success = MCMemoryNewArray(t_frame_count, t_frames);
for (uindex_t i = 0; t_success && i < t_frame_count; i++)
{
MCImageFrame *t_src_frame = nil;
t_success = m_source->LockImageFrame(i, t_src_frame);
if (t_success)
{
t_frames[i].duration = t_src_frame->duration;
if (m_angle != 0)
{
// rotate
MCImageBitmap *t_bitmap = nil;
MCImageBitmap *t_rotated = nil;
t_success = MCImageCopyBitmap(t_src_frame->image, t_bitmap);
if (t_success)
{
MCImageBitmapPremultiply(t_bitmap);
t_success = MCImageRotateBitmap(t_bitmap, m_angle, m_quality, 0x0, t_rotated);
}
MCImageFreeBitmap(t_bitmap);
bool t_scaled = false;
if (t_success && (t_rotated->width != t_target_width || t_rotated->height != t_target_height))
{
MCImageBitmap *t_sbitmap = nil;
t_success = MCImageScaleBitmap(t_rotated, t_target_width, t_target_height, m_quality, t_sbitmap);
MCImageFreeBitmap(t_rotated);
t_rotated = t_sbitmap;
t_scaled = true;
}
if (t_success)
{
if (t_scaled && (m_quality == INTERPOLATION_BICUBIC))
MCImageBitmapUnpremultiplyChecking(t_rotated);
else
MCImageBitmapUnpremultiply(t_rotated);
t_frames[i].image = t_rotated;
}
else
MCImageFreeBitmap(t_rotated);
}
else
{
// resize
if (t_src_frame->image->width == t_target_width && t_src_frame->image->height == t_target_height)
t_success = MCImageCopyBitmap(t_src_frame->image, t_frames[i].image);
else
t_success = MCImageScaleBitmap(t_src_frame->image, t_target_width, t_target_height, m_quality, t_frames[i].image);
}
}
m_source->UnlockImageFrame(i, t_src_frame);
}
if (t_success)
{
r_frames = t_frames;
r_frame_count = t_frame_count;
}
else
MCImageFreeFrames(t_frames, t_frame_count);
return t_success;
}
