Add additional_decode_surfaces parameter to videoreader #1393
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Why we need this PR?
Pick one
Adds
additional_decode_surfaces
parameter to VideoReader.Also reduces device memory usage as mentioned in VideoReader use too much device memory? What should I do? #1372 (comment)
What happened in this PR?
By default we use min_num_decode_surfaces + 2. If however using older API/driver the nvdec api does not return min_num_decode_surfaces, we use 20 surfaces as before.
The parameter can be used to control memory usage.
Tested with videoreader benchmark Add benchmark for VideoReader and L1 tests for the same #1173. Before and after results were within tolerance of each other.
JIRA TASK: [DALI-XXXX]