* client/x11: Fix colors on big endian
The bitmaps are recieved in little endian byte order (LSBFirst in terms
of X11). This is a problem on systems, where bitmaps are expected in big
endian byte order (MSBFirst). X11 client tries to handle this situation
by different color formats (e.g. RGBX vs. BGRX), but this doesn't work.
BGRX is not MSBFirst variant of RGBX, it should be XRGB. But this would
work only for 32/24 depths, where color channels matches bytes. Let's
say to the XServer that all the bitmaps are in LSBFirst encoding instead
of changing the color formats on big endian systems.
https://github.com/FreeRDP/FreeRDP/issues/2520
* client/x11: Fix cursor color on big endian
The cursor color is wrong on big endian systems. It is not probably
possible to force bitmap_order for XcursorImage as it is possible for
XImage. Fortunately, cursors are always 32 bit so we can use ABGR
instead of BGRA to deal with.
https://github.com/FreeRDP/FreeRDP/issues/2520
* client/x11: Fix comment indentation
The comment has wrong indentation for some reason, let's fix it.
* client/x11: Fix BGR vs. RGB detection
The BGR vs. RGB detection code is leftover from history and I am conviced
that it is wrong with the current color handling, where invert flag is TRUE
by default. However, I suppose that the detection still makes sense and
XServer may use the inverted formats in some cases. Maybe we can force XServer
to use our masks somehow, but let's just fix the value to FALSE now.
* client/x11: Remove unused color shifts
The color shifts are lefover from history and are not used in current
code. Let's remove them.
The size of OFFSCREEN_DELETE_LIST list allocation was incorrectly changed
by commit 99b1481 and consequently fixed incorrectly by commit 8a0fe086.
Let's count the allocation size based on new size and not based on current
size in order to prevent some memory issues.
https://github.com/FreeRDP/FreeRDP/issues/4117
Currently, SetSurface is called regardless of return value from
offscreen_cache_get. It may happen that bitmap is not found in a
cache from some reason, which may lead to segfaults. Let's check
the returned value before use.
https://github.com/FreeRDP/FreeRDP/issues/4117
Arguments of xf_Bitmap_SetSurface are not checked before use currently
which may lead to segfaults. It may happen if bitmap is not found in a
cache from some reason. Let's check the arguments before use similarly
as it is done in client/Windows/wf_graphics.c in order to avoid segfaults.
https://github.com/FreeRDP/FreeRDP/issues/4117
Commit 54a7d799d1 introduced a problem
where /app was used instead of /shell causing a black screen when remote
programs were used. The Android client doesn't support remote apps
therefore /app can't work. "Remote program" just sets the selected
program as shell to run.
