vcl-svp: Store 24-bit images in 3-byte pixels

This adds support in headless rendering for more
compact 24-bit RGB image storage in 3-byte pixels
instead of 4 bytes.

There is a conversion necessary to accomodate Cairo,
which requires 4-byte pixels, but that is relatively.

Early tests show no loss of performance at runtime.

Unit tests updated since the bitmap memory bytes
are crc-ed, which obviously are different in size
if not in content.

(cherry picked from commit 354ad875092fd0c3b12f232950375206ec5d66a6)
Reviewed-on: https://gerrit.libreoffice.org/46679
Reviewed-by: Jan Holesovsky <kendy@collabora.com>
Tested-by: Jan Holesovsky <kendy@collabora.com>
(cherry picked from commit 11adb51f2553dc4a838c8668d94909771d70e1ab)

Change-Id: I3919f7c56d14d09e67f163f035b4c7683b49087c
Reviewed-on: https://gerrit.libreoffice.org/47009
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Ashod Nakashian <ashnakash@gmail.com>

0 files changed, 0 insertions, 0 deletions