[nemothekid]

>And you are going to work on all 4mb at the time?

Yes? Assume you were going to decode the jpeg and display it on screen. I assume the user would want to see the total jpeg at once.

Consider you are working on processing a program that has a bunch of jpegs and is running some AI inference on them.

1. You would read the jpegs from disk into memory. 2. You decode those jpegs in into RGBA buffers 3. You run inference on the RGBA buffers.

The current ImageDecode interface forces you to do a memcopy in between steps 1 and 2.

1. You would read the jpegs from disk into memory. 2. You copy the data in memory into another buffer because you are using the Reader interface 3. You decode those jpegs in into RGBA buffers 4. You run inference on the RGBA buffers.

Step two isn't needed at all, and if the images are large, that can add latency. If you are coding on something like a Raspberry Pi, depending on the size of the jpegs, the delay would be noticable.