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GstVulkan updates in API to support video extensions

Víctor Manuel Jáquez Leal requested to merge vjaquez/gstreamer:vulkan-updates into main

Vulkan Video extensions require features that are not available in GStreamer Vulkan library, such as multiqueues, multiplaned image formats packed in a single memory, yuv samplers, etc.

This merge request is an early RFC regarding API changes without, yet, the video decoding itself.

I have a branch with something that works but only on NVIDIA and with a lot of artifacts: https://gitlab.freedesktop.org/vjaquez/gstreamer/-/tree/vkh264dec-2/ where I realized all these previous work required. Yeah, this is my third rewrite.

above of !4501 (merged)

Edited by Víctor Manuel Jáquez Leal

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