If down or over images are missing, they default to the up image. Yet, in case
of animated images, the animation gets played leading to undesirable artefacts.

This patch adds a comparison operator for animated images and do not restart the
animation if they are alike.

Add a video_filter module which uses the Broadcom Multi Media Abstraction
Layer (mmal) to deinterlace video in hardware on supported platforms like the
Raspberry Pi.
As of now it is only working in opaque mode, due to a broadcom firmware
limitation.  Thus it can only be used along with mmal/codec and mmal/vout.
Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

This does not work properly because swscale is busted (it assumes that
cropping is only on the bottom and right side).

This should fix deadlocks with the mainloop (in wl/shell_surface).

the default handler would read them as soun atom but fail to free them

This should explain when to use the virtual keyword or the
Q_DECL_OVERRIDE macros on virtual function declarations.
Signed-off-by: Tristan Matthews <le.businessman@gmail.com>

Declaring a virtual function in a subclass as virtual may be a good
documentation that we are overriding a method from the superclass but
has no effect during compilation. With C++11, we can use the override
keyword for this (which will even trigger a compiler error if we try to
override a non-virtual function).

To stay backwards-compatible, we use Qt5's Q_DECL_OVERRIDE macro to
support C++ <11.
Signed-off-by: Tristan Matthews <le.businessman@gmail.com>

Signed-off-by: Tristan Matthews <le.businessman@gmail.com>

Outsource some of the picture handling code from the mmal video_output into a
dedicated file. This is required as it will be used by the mmal filter plugin
later on as well.
Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Tristan Matthews <le.businessman@gmail.com>

Signed-off-by: Tristan Matthews <le.businessman@gmail.com>

Fix AAC-LC playback with QT 10.3 (727.4)

A crash could occur in the following situation:
1) A video decoder is created and starts waiting for the first picture:
   b_waiting = true, b_first = true

2) The first picture is received but the decoder is still in waiting mode:
   b_waiting = true, b_first = false

3) A second picture is received, the decoder is now waiting in
DecoderWaitUnblock().

4) From the input thread, an EOF event is received, EsOutChangePosition is
called and sets the decoder in flushing mode.

5) The decoder thread wakes up and exits DecoderWaitUnblock because
b_flushing is true. However this triggers the assertion in
DecoderDecodeVideo since we have b_waiting && !b_first.

Fix #11892, #12041

In combination with the previous patch all crashes (double free()) are solved.
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

sys->pictures was allocated but not freed.
Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

This removes some bad locking. In fact this lock could cause a deadlock on
shutdown as the lock is held by the main thread when shutting down and this
function might be called as a result of shutting the ports down.
Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

This patch reflects the buffer handling improvements done in the mmal codec
module into the the mmal video output module.
A nice side effect of the restructuring is that less magic values need to be
defined as the required values can be computed dynamically now.
Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

This patch reduces the number of required pictures in the picture pool as well
as the number of required buffer headers on the mmal component. If
MMAL_ENCODING_OPAQUE is used as data format the number of buffers which have
to be provided to the components ports are very critical and there is a
relation between the configured number of buffers at the port and the actual
number of buffers which are available at a port at any time.
The previous approach was rather conservative and allocated a lot of extra
buffers to ensure that things are smooth all the time. This has the drawback
of wasting memory though. Especially when adding another mmal element
(deinterlace filter) it caused a situation where we run out of resources. This
new approach reduces the required resources so that another mmal component can
be added to the chain.
Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

The mmal codec plugin is built as a part of the mmal module now. This drops
the ability to en-/disable codec support independently from the vout, but in
fact currently there is no mmal implementation which wouldn't support both
modules, so it seems sane to build them together as this unclutters the
configure scripts a little.
Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

As the mmal modules will require some shared code in the future move them out
of the split directory structure into a hw/mmal subdirectory, like it
is handled with vdpau plugins already.
Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

macosx: contacting an app using SBApplication can fail, be a bit more conservative to prevent runtime exceptions

Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>