WgcCaptureSession would crash when copying the frame data for an image
from a portrait oriented monitor. This is because we were using the
height of the image multiplied by the rowpitch of the buffer to
determine the size of the data to be copied. However, in portrait
mode the height measures the same dimension as the rowpitch, leading
to us overrunning the frame buffer.
The fix is to use the height and width of the image multiplied by
the number of bytes per pixel to determine how much data to copy
out of the buffer, and only use the rowpitch to advance the pointer
in the source data buffer. This has the added benefit of giving us
contiguous data, reducing the size of the DesktopFrame that we output.
Bug: webrtc:12490
Change-Id: I4c26f8864cb57ac566a742af70fea1da504b9706
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/209501
Reviewed-by: Joe Downing <joedow@chromium.org>
Commit-Queue: Austin Orion <auorion@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#33532}
1cdbabde53