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h264parser: Parse the cropping-rectangle separately.

Submitted by Sreerenj Balachandran @sree

Link to original bug (#694068)

Description

Created attachment 236561
h264parser: Parse the cropping-rectangle separately.

The h264parser should parse the cropping rectangle separately. Because we have to pass the cropping rectangle to the renderer instead of using the cropped-values for decoding.Which means the width and height of SPS header will be un-cropped dimensions.

example case: many of the 1920x1088 samples of h264 have 8 padding lines to make the height as a multiple of 16. The actual picture dimension will be 1920x1080.

Patch 236561, "h264parser: Parse the cropping-rectangle separately.":
0001-h264parser-Parse-the-cropping-rectangle-separately.patch