While decoding RemoteFX encoded frames is multithreaded, decoding
RemoteFX Progressive frames is not, although both codecs work
relatively similarly.
This is especially noticeable with frames, that have a resolution
larger than 1920x1080 pixels.
decompress_tile_first() and decompress_tile_upgrade() can both run in
different threads at the same time for different tiles without necessary
adjustments.
So, do exactly that using the ThreadPool that already exists in the
RFX_CONTEXT to decrease the decoding time and therefore increase the
performance.
On a 3K display (2880x1620 pixels) this makes out of a choppy
experience a fluid experience.
When checking whether tiles and updatedTileIndices are both non-NULL,
one of them might be NULL, while the other struct member might not
be NULL and progressive_surface_context_new() leaks then the non-NULL
struct member.
Fix this by freeing both struct members, when aborting in
progressive_surface_context_new().
free() will take no action on pointers that are NULL, so no additional
check is needed.
SSL will become opaque in LibreSSL 3.4.x, hence the code reaching inside
it will result in build breakage. This was done at the time for lack of
BIO_up_ref() support, which has been available since LibreSSL 2.7.0, so
adjust the relevant #ifdefs accordingly.
Covscan report contains various memory leak defects which were marked
as important. I have spent some time analyzing them and although they
were marked as important, most of them are in error cases, so probably
nothing serious. Let's fix most of them anyway. The rest are false
positives, or too complicated to fix, or already fixed in master, or
simply I am unsure about them.
Relates: https://github.com/FreeRDP/FreeRDP/issues/6981
The `rfx_context_free` function uses the `rfx_message_free` function
with an address of the statically allocated `RFX_MESSAGE` struct. This
causes that the following is reported from covscan:
```
address_free: "rfx_message_free" frees address of "context->currentMessage".
```
I am convinced that this is just false-positive as the address is freed
only when `freeArray` is `0`, which is not in case of `RFX_CONTEXT`.
Let's add a code annotation to silence the false-positive next time.
