How to get supported hardware level? about cameraview-ex HOT 9 CLOSED

No @rid-hrant it is not related to reprocessing.

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Hi @rid-hrant that information is not exposed. This library is meant to be a wrapper around camera implementation hiding all android apis behind a simple to use api. Internally the library checks for hardware level and if it is LEGACY it automatically fallsback to using Android camera1 api.

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@pvasa thank you for fast feedback. How I can check is YUV output format supported or not?

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@rid-hrant AFAIK YUV image output should be available on all devices. Although I haven't seen it mentioned anywhere in the docs but never have I either faced this issue where a device is not able to produce YUV images.

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Also on devices with legacy hardware level, it will fallback to camera1 implementation which always produces NV21 format images and it will be reflected in output Image.format.

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In this post there is mentioned about Level 3 implementation, Level 3: Additionally support YUV reprocessing and RAW image capture. There can be device which does not have Level 3 implementation, what about this case?

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@rid-hrant YUV reprocessing is different than producing YUV output. Hardware level 3 check is required for YUV reprocessing but YUV image output (YUV_420_888 or NV21) can simply be produced using ImageReader without any extra check.

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@pvasa Is implementation of this method camera.setPreviewFrameListener related to YUV reprocessing? If YUV reprocessing not supported, will it work?

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@pvasa thank you! Now it's clear. 🙂

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