Comments (3)
Yes, definitely.
I am planning to stubbornly keep my basic avifDecoderRead() as a braindead-simple path for people that aren't trying to use image sequences or squeak out extra performance, as it allows for avifImage objects to be decoupled almost entirely from encoders and decoders.
That said, I'm in the process now of putting in image sequence support, and a side effect of that medium-sized code reorg, I'm planning to make avifDecoderRead() simply call 3-4 other avifDecoder functions which ends up with a copy of the first image, with functions that perform something like:
- Begin the decode/parse
- "get" the first image, which will be owned by the decoder (decoder->image will be a not-copied avifImage)
- "copy" decoder->image into the passed in image ptr
I plan to reuse the decoder->image structure as you "get" the next image, so if you want YUV copies of multiple frames, you're going to have to copy it anyways, but I imagine you just want to take the current decoder->image and run it through your own YUV->RGB pipeline, in which decoder->image can be safely reused, right?
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That break up sounds good.
Yes in the ideal case we can output directly to YUV8 planes, but we can't reuse the buffers from dav1d/libavif for that. We do have to copy into them. In the less ideal case (where RBG8/RGB_F16) is required we have to convert into a new structure.
So I don't think we can ever get to a zero copy solution, but a one copy one would be fine too.
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This is done, see the Advanced Decoding section of the README.
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Related Issues (20)
- ci-windows failure "unknown file: error: SEH exception with code 0xc000001d thrown in the test body" HOT 4
- Sample HDR AVIF decoded to JPG shows incorrect colors HOT 8
- How to build a dynamic library that statically links all dependencies? HOT 1
- Ignore and skip FullBoxes with an unrecognized version
- How to build the.A use of iOS platform? HOT 2
- Make libyuv package-friendly dependency HOT 2
- Roll YCgCo-R out HOT 1
- Add Homebrew install instructions and avifdec/avifenc examples to README HOT 6
- autoconf etc. HOT 1
- avifImageRGBToYUV should set color space to default values HOT 2
- Findrav1e.cmake ignores library dependencies listed in the generated pkgconfig file HOT 5
- [Function Request] avifenc supports svt and rav1e encoder options key-value HOT 2
- MSYS/MinGW32: Linking error, undefined references to Nt file functions HOT 2
- Noticeable color shift HOT 6
- Does CVE-2024-1580 affect libavif with dav1d decoder? HOT 1
- Static build issues on MSYS2 HOT 4
- sharpyuv conversion failed HOT 2
- libavif.a should not be a combined archive library HOT 6
- Not able to build static build on amazon linux 2023 HOT 9
- GIF encodes with wrong frame rate HOT 14
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