av1_argon_test1019 test fails with assertion `!(m_ownedByDisplayMask & (1 << pictureIndex))'

[crmurillo]

The efforts to pass test av1_argon_test1019 revealed several failed assertions in the code.
This issue describes the assertion after fixing Issue #123 and Issue #137.

Steps to reproduce:

$ /DEV/Vulkan-Video-Samples/BUILD/vk_video_decoder/demos/vk-video-dec-test -i /DEV/Vulkan-Video-Samples/tests/resources/video/av1/av1-argon_test1019.obu --verbose --enablePostProcessFilter 0 -o /DEV/Vulkan-Video-Samples/tests/results/decoded_av1_argon_test1019.yuv --noPresent

Failure:

vk-video-dec-test:  /DEV/Vulkan-Video-Samples/vk_video_decoder/libs/VulkanVideoFrameBuffer/VulkanVideoFrameBuffer.cpp:514: virtual int32_t VkVideoFrameBuffer::DequeueDecodedPicture(VulkanDecodedFrame*): Assertion `!(m_ownedByDisplayMask & (1 << pictureIndex))' failed.

https://storage.googleapis.com/vulkan-video-samples/av1/av1-argon_test1019.obu

[crmurillo]

The m_ownedByDisplayMask bitmask cannot track multiple display references to the same picture buffer slot. When AV1's show_existing_frame requeues a frame that is already owned by the consumer, the assertion fails.

AV1 allows re-displaying a previously decoded frame without decoding it again via show_existing_frame in the bitstream. The m_ownedByDisplayMask is used to track ownership, which can only represent 0 or 1, not reference counts.

Step	Action	picId	show_existing_frame	frame_type	ownedByDisplayMask	Result
1	Decode + Queue	0	0	KEY	0x00
2	Dequeue	0	-	-	0x01	bit 0 set
3	Decode + Queue	5	0	INTER	0x01
4	Dequeue	5	-	-	0x21	bit 5 set
5	Re-queue (no decode)	5	1	INTER	0x21	same picId queued again
6	Dequeue	5	-	-	Assertion fails	bit 5 already set