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Miklos Vajna 916848d877 tdf#149971 avmedia: implement video crop support in the gsteamer backend 
If a media shape had cropping defined, we already took that into account
when presenting a preview for it, but not during video playback.

The reason for this is that the preview may be set by a file importer
(e.g. PPTX) explicitly, in which case the preview is a bitmap we get
without any video processing.

As a start, implement video crop for the gstreamer backend (used on
Linux), and also pass in the media item (containing crop and other
properties) both during the edit view (MediaWindowImpl) and presenting
(ViewMediaShape). We pass in the whole media item, so in case later
other filters (e.g. black-and-white) are wanted, we have all that info
in the backends already.

Other backends (avmediaMacAVF and avmediawin) are untouched so far.
svx/qa/unit/data/video-snapshot.pptx is modified to have a yellow border
when cropping is unimplemented, which is now not visible with the
gtreamer backend, matching PowerPoint behavior. PPTX export was working
out of the box already.

Change-Id: If26b7a4391bcffe9cbddd9933e1bab69be52924e
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/138867
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins
2022-08-26 11:48:41 +02:00
..
inc Related: tdf#100007 pause state not always updating "play" state to off 2022-02-14 13:50:35 +01:00
source tdf#149971 avmedia: implement video crop support in the gsteamer backend 2022-08-26 11:48:41 +02:00
util
AllLangMoTarget_avmedia.mk
IwyuFilter_avmedia.yaml replace usage of blacklist with excludelist for IWYU 2020-07-10 02:03:40 +02:00
Library_avmedia.mk Disable epoxy test with --disable-gui 2022-01-05 18:00:59 +01:00
Library_avmediagst.mk tdf#149971 avmedia: implement video crop support in the gsteamer backend 2022-08-26 11:48:41 +02:00
Library_avmediagtk.mk first cut at using Gtk4 built in video playback 2022-02-18 20:40:01 +01:00
Library_avmediaMacAVF.mk Generally determine Rdb content from gb_*_set_componentfile calls 2021-12-10 08:14:24 +01:00
Library_avmediawin.mk Generally determine Rdb content from gb_*_set_componentfile calls 2021-12-10 08:14:24 +01:00
Makefile
Module_avmedia.mk first cut at using Gtk4 built in video playback 2022-02-18 20:40:01 +01:00
README.md Updated README.md files to represent current code / use Markdown format 2021-04-07 17:47:16 +02:00

README.md

Audio / video Media Implementation.

Provides per-platform implementations of multimedia functionality. Currently no stream API is provided, only a URI based one, so streaming has to be wrapped around it via temp files.

Also provides (in source/framework/mediacontrol.cxx) an implementation of the graphical media playback control that appears in the toolbar / mediaobject bar when media is selected under the .uno:AVMediaToolBox item.

avmedia / gstreamer

The avmedia component is implementation of manager service defined in offapi/com/sun/star/media/. Radek has added implementation based on gstreamer so that we can add audio and video files into impress presentation on Linux with gstreamer.

The implementation is pretty straightforward, sometimes it has problems when gstreamer installation is incomplete.

In the beginning the media files were not embedded, Thorsten added support for that later.

Future Works

it might be worthwhile to revamp the avmedia UI.