Bug: None
Test: mmm external/v4l2_codec2
Change-Id: I21d5d30ce32279dfb1cbe2b40d435d2e9707f5aa

C2PooledBlockPool is used by VideoFramePool. Currently VideoFramePool
has exponential backoff retry, so we don't need another retry logic in
C2PooledBlockPool. This CL removes the unnecessary retry logic.

Bug: 160110407
Test: tast.arc.VideoDecodeAccel.h264_vm

Change-Id: I73ffd4b27000846eeea1e5bffbedb21e16795593

Originally we assume the buffers at BufferQueue are not moved to
different slot. Then we could track the buffers by the slot index.
However, MediaSync implementation detach buffers and attach back to
BufferQueue. The slot index might be changed.

This CL changes to use GEM handle as the identifier of graphic
buffers. Because all the graphic buffers are allocated by gralloc, we
could get the GEM handle by DRM. V4L2GraphicAllocator is not used
anymore.

Bug: 177484971
Test: android.media.cts.AdaptivePlaybackTest

Change-Id: I6b7f3f9a6c1d6b97d0e44aa2a19bc71ad3bab880

At ag/12937817 we add V4L2GraphicAllocator to add unique ID for each
graphic buffer. This CL switches to use V4L2GraphicAllocator for
output buffer allocator. Also we change to use the unique ID instead
of IGBP slot in surface mode (C2VdaBqBlockPool), and buffer ID from
BufferPoolData in byte buffer mode (C2VdaPooledBlockPool).

Bug: 171845630
Test: android.media.cts.AdaptivePlaybackTest#testH264_*
Change-Id: Iab06148a09c9ddb01634399c386a0aaea77aaabd

getPoolIdFromGraphicBlock() is used to get the buffer index from
C2GraphicBlock. Originally the function takes the pointer for returing
the buffer index, and returns the status code. But actually we only
care if the function is successfully or not.

This CL changes the function signature to return a std::optional<>
value to indicate if the function successfully gets the buffer index.

Bug: 160110407
Test: run e2e test
Change-Id: I88e54831b1964d20cd888e2b69a028e75a3e50cd

V4L2 stateful API will require the caller passing a fixed output
buffer to each slot of buffer queue. However, the default
C2PooledBlockPool cannot achieve this requirement.

This CL adds C2VdaPooledBlockPool for replacing C2PooledBlockPool in
the following CL.

Bug: 161770200
Test: m -j32
Change-Id: Icdad63ace87b49793d0f7215f8d735a8c950ee60