Comments (2)
What steps should be followed here? I have this in mind:
- Decode the first frame completely (there's no line by line decoding nor regions)
- Move the selected region (if there's any) to the beginning of the array (with
memmove
), so that we don't need to alloc more memory for a copy. - Create a new container for the scaled image.
- Downscale the image (using the container as destination for the pixels) applying some filter: nearest, bilinear, bicubic, lanczos... which one?
from image.
GIF is an indexed-color image type. The result in your step 1 is the color-index array of the whole first frame (some image information as well). So the step 2 should be generating the selected region raw image(like RGBA array). Then step 3, downscale the image. Maybe the step 2 and the step 3 can combine to save memory.
Bilinear is good enough for downscaling. That is what Android OpenGL ES used in default.
from image.
Related Issues (13)
- Automatic memory
- Support interlaced PNG HOT 4
- Better testing module HOT 3
- Add more color format support
- Colors different compared to source image HOT 4
- Remove native-heap image HOT 3
- Modular HOT 3
- Import image codecs as submodules HOT 1
- Progressive decoding
- New image structures HOT 3
- Buffer struct
- Reduce the number of externalNativeBuilds
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from image.