Swift encoder assumes pixel format, has inefficient implementation.

[woltapp]

Swift encoder assumes pixel format, has inefficient implementation.

[DagAgren]

Pushed a change to convert images to a known sRGB format in the Swift encoders now. Seems to lead to slightly nicer colours too in the test app so I guess those images weren't in sRGB as I had expected.

[DagAgren]

The correct way to call it is to first scale the image down to a small size, such as 32x32, and the converting that. That handles both any possible slowness, and gets much better results than just skipping pixels.

[mrousavy]

@DagAgren Doesn't the sRGBToLinear still get called NxMxWxH times or am I missing something?

The Swift decoder is surprisingly slower than the Kotlin implementation (I've tested it for benchmark purposes with decode widths and heights of 400, Swift takes longer than 4 seconds while Kotlin (Android) is done in less than 100ms)