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Ticket #7650: Use libmythui to draw the OSD

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mythtv at cvs

Nov 23, 2009, 5:12 PM

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Ticket #7650: Use libmythui to draw the OSD

#7650: Use libmythui to draw the OSD
-------------------------------------+--------------------------------------
Reporter: markk | Owner: janne
Type: task | Status: new
Priority: minor | Milestone: 0.23
Component: MythTV - Video Playback | Version: head
Severity: medium | Mlocked: 0
-------------------------------------+--------------------------------------
Summary plan of attack:-

* Create a new MythRender class in libmythui and 3 subclasses
(MythRenderOpenGL, MythRenderD3D and MythRenderVDPAU) that can be used by
libmythui and libmythtv to create hardware accelerated rendering devices
and avoid a libmythui dependancy on libmythtv.

* Convert VideoOutputOpenGL, VideoOutputD3D and VideoOutputVDPAU to use
the new MythRender classes.

* Convert MythOpenGLPainter and MythVDPAUPainter to use the new MythRender
classes.

* Create a new MythD3DPainter class that uses MythRenderD3D.

* Create MythYV12Painter and MythRGBAPainter to draw to YUV420P and RGBA
buffers directly.

* Convert OSD to use a libmythui object tree for theming and MythPainter
to render those objects.

* Convert the VideoOutput classes to using MythPainter objects for
rendering the OSD. VideoOutputOpenGL, D3D and VDPAU will render directly
to a frame buffer (on screen or off), VideoOutputXv to either the video
frame (as now) or to an RGBA buffer for the chromakey osd.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7650>
MythTV <http://www.mythtv.org/>
MythTV
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mythtv at cvs

Nov 23, 2009, 5:13 PM

Post #2 of 226 (3829 views)
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Re: Ticket #7650: Use libmythui to draw the OSD [In reply to]

mythtv at cvs

Nov 23, 2009, 5:37 PM

Post #3 of 226 (3827 views)
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Re: Ticket #7650: Use libmythui to draw the OSD [In reply to]

mythtv at cvs

Nov 24, 2009, 5:16 PM

Post #4 of 226 (3802 views)
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Re: Ticket #7650: Use libmythui to draw the OSD [In reply to]

#7650: Use libmythui to draw the OSD
-------------------------------------+--------------------------------------
Reporter: markk | Owner: markk
Type: task | Status: accepted
Priority: minor | Milestone: 0.23
Component: MythTV - Video Playback | Version: head
Severity: medium | Mlocked: 0
-------------------------------------+--------------------------------------

Comment(by markk):

(In [22897]) Branch libmythui-osd: Add MythRenderVDPAU as a new general
purpose VDPAU
context. This will replace VDPAUContext for rendering both UI elements
and video.

The main changes from the existing class are:-
- it is thread safe so should have no difficulty with access from
multiple 'clients'. Multiple decoder locks may be needed for efficient
handling of multiple decoders, though they should currently work
regardless.
- adds initial, though untested, support for the new VDPAU high quality
scaling feature.
- it provides opaque resource handles to clients to allow seemless
recovery from display preemption. Preemption events no longer require
the video output classes to be recreated. The main complication here is
that recreation of VideoOutputSurfaces needs to be triggered from the
decoder (when hardware decoding), so we allocate a thread 'owner' to
each surface and re-create as needed.

Despite extensive locking and QHash usage, performance appears to be
unchanged from the existing class(es). Both locking and QHash checks
could possibly be relaxed going forward.

Refs #7650

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7650#comment:3>
MythTV <http://www.mythtv.org/>
MythTV
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mythtv at cvs

Nov 24, 2009, 5:54 PM

Post #5 of 226 (3793 views)
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Re: Ticket #7650: Use libmythui to draw the OSD [In reply to]

mythtv at cvs

Nov 24, 2009, 10:22 PM

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mythtv at cvs

Nov 24, 2009, 11:57 PM

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mythtv at cvs

Nov 25, 2009, 12:02 AM

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mythtv at cvs

Nov 25, 2009, 4:30 PM

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Re: Ticket #7650: Use libmythui to draw the OSD [In reply to]

mythtv at cvs

Nov 25, 2009, 4:34 PM

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Re: Ticket #7650: Use libmythui to draw the OSD [In reply to]

mythtv at cvs

Nov 25, 2009, 5:59 PM

Post #11 of 226 (3785 views)
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Re: Ticket #7650: Use libmythui to draw the OSD [In reply to]

mythtv at cvs

Nov 29, 2009, 3:10 AM

Post #12 of 226 (3644 views)
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Re: Ticket #7650: Use libmythui to draw the OSD [In reply to]

#7650: Use libmythui to draw the OSD
-------------------------------------+--------------------------------------
Reporter: markk | Owner: markk
Type: task | Status: accepted
Priority: minor | Milestone: 0.23
Component: MythTV - Video Playback | Version: head
Severity: medium | Mlocked: 0
-------------------------------------+--------------------------------------

Comment(by markk):

(In [22923]) Branch libmythui-osd: Add MythRenderOpenGL as a new general
purpose
OpenGL context which will replace OpenGLContext for rendering both UI
elements and video.

This is largely a lift and shift of the code from OpenGLContext into a
sub-class of QGLContext with additional functionality for the UI
rendering aspects. This gives us Qt cross-platform support out of the
box (with the exception of some screen information) and hence greatly
simplifies the code base. The downside is that we must use a QGLWidget
for rendering, it is not yet thread safe under X11 (as we do not have
access to the underlying X display connection) and, for the time being
at least, there is no OpenGL vsync support.

As yet untested on OS X and windows.

Refs #7650

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7650#comment:11>
MythTV <http://www.mythtv.org/>
MythTV
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mythtv at cvs

Nov 29, 2009, 3:43 AM

Post #13 of 226 (3635 views)
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Re: Ticket #7650: Use libmythui to draw the OSD [In reply to]

mythtv at cvs

Nov 29, 2009, 6:00 AM

Post #14 of 226 (3634 views)
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Re: Ticket #7650: Use libmythui to draw the OSD [In reply to]

mythtv at cvs

Nov 29, 2009, 6:27 AM

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Re: Ticket #7650: Use libmythui to draw the OSD [In reply to]

mythtv at cvs

Nov 29, 2009, 6:52 AM

Post #16 of 226 (3611 views)
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Re: Ticket #7650: Use libmythui to draw the OSD [In reply to]

#7650: Use libmythui to draw the OSD
-------------------------------------+--------------------------------------
Reporter: markk | Owner: markk
Type: task | Status: accepted
Priority: minor | Milestone: 0.23
Component: MythTV - Video Playback | Version: head
Severity: medium | Mlocked: 0
-------------------------------------+--------------------------------------

Comment(by markk):

(In [22930]) Branch libmythui-osd: Use MythRenderOpenGL as the render
device for
VideoOutputOpenGL and its helper class OpenGLVideo.

WARNING: As is, this will crash intermittently on Linux/X11 as rendering
is via the parent QGLWidget which sits in the main UI thread and we are
triggering X calls from at least 2 other threads. Going forward we need
to either move the main video output loop into the UI thread and make
access from other threads safe (preferred option) or reimplement large
parts of the Qt OpenGL code to gain direct access to the underlying X
display connection (no thanks!). The former option is probably needed
anyway if we are to implement any advanced eye candy at a later date.

The softblend OSD option has been removed and, as for the
VideoOutputVDPAU changes, the full screen OSD is temporarily disabled.

Performance and features should otherwise be unchanged, though both
hardware and sotware Bobdeint appear to be broken in some way.

Refs #7650.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7650#comment:15>
MythTV <http://www.mythtv.org/>
MythTV
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mythtv at cvs

Nov 29, 2009, 4:06 PM

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mythtv at cvs

Nov 30, 2009, 7:29 PM

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mythtv at cvs

Nov 30, 2009, 11:42 PM

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mythtv at cvs

Dec 6, 2009, 9:49 PM

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mythtv at cvs

Dec 6, 2009, 9:54 PM

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mythtv at cvs

Dec 6, 2009, 10:57 PM

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mythtv at cvs

Dec 7, 2009, 3:59 PM

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mythtv at cvs

Dec 7, 2009, 6:28 PM

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mythtv at cvs

Dec 8, 2009, 3:58 PM

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