[vlc-devel] [PATCH 0/6] WIP libvlc surface rendering size update

[Steve Lhomme]

As the API suggests we'll also need to tell what's the chroma and colorimetry of the display so the core can adapt. It may change dynamically when the source changes.

> On 25 Jan 2019, at 16:46, Steve Lhomme <robux4 at ycbcr.xyz> wrote:
> 
> When rendering in VLC the window size affects the rendering as SPU may need to
> be rendered bigger than the video. A host app should get the same quality. If
> it's playing a small video the SPU should still have a correct size when displayed
> large.
> 
> So we need an API to tell libvlc the rendering area size. These patches add this
> feature by setting the value in the vout (or in a variable if it's not created
> yet).
> 
> It may be possible to add callbacks to "wdummy" to do the same in a more regular
> way.
> 
> There's also a Qt sample app that renders into OpenGL.
> 
> Steve Lhomme (6):
>  libvlc: rename libvlc_video_set_output_callbacks
>  doc: add a Qt app to showcase the OpenGL surface callbacks
>  libvlc: add structures to describe the display configuration
>  WIP video_output: make vout_ControlChangeDisplaySize() public
>  libvlc: add an API to set the display configuration
>  WIP qtqlvlc: update the rendering size when changing the window size
> 
> doc/libvlc/QtGL/main.cpp          |  40 ++++
> doc/libvlc/QtGL/qtvlcwidget.cpp   | 332 ++++++++++++++++++++++++++++++
> doc/libvlc/QtGL/qtvlcwidget.h     |  47 +++++
> doc/libvlc/sdl_opengl_player.cpp  |   4 +-
> include/vlc/libvlc_media_player.h |  89 +++++++-
> include/vlc_vout.h                |   4 +
> lib/libvlc.sym                    |   3 +-
> lib/media_player.c                |   5 +-
> lib/video.c                       |  17 ++
> src/libvlccore.sym                |   1 +
> src/video_output/vout_internal.h  |   2 -
> 11 files changed, 530 insertions(+), 14 deletions(-)
> create mode 100644 doc/libvlc/QtGL/main.cpp
> create mode 100644 doc/libvlc/QtGL/qtvlcwidget.cpp
> create mode 100644 doc/libvlc/QtGL/qtvlcwidget.h
> 
> -- 
> 2.17.1
> 
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