[FFmpeg-devel] [PATCH 2/2] lavc/mediacodec: bypass width/height restrictions when looking for a decoder

[Matthieu Bouron]

On Tue, May 31, 2016 at 03:51:20PM +0200, Matthieu Bouron wrote:
> On Tue, May 31, 2016 at 03:35:49PM +0200, Hendrik Leppkes wrote:
> > On Tue, May 31, 2016 at 3:00 PM, Matthieu Bouron
> > <matthieu.bouron at gmail.com> wrote:
> > > From: Matthieu Bouron <matthieu.bouron at stupeflix.com>
> > >
> > > Codec width/height restrictions seem hardcoded at the OMX level and
> > > seem arbitrary. Bypassing those restrictions allows a device to decode
> > > streams at higher resolutions.
> > >
> > > For example it allows a Nexus 5 to decode h264 streams with a resolution
> > > higher than 1920x1080.
> > 
> > 
> > What happens if the resolution actually exceeds the devices capabilities?
> 
> The patch has been tested on various devices and it has been working so
> far. When the resolution actually exceeds the device capabilities the
> codec just fails to configure itself.
> 
> However I did not try to craft samples with really high resolutions (higher
> than ~4K) to test the patch against.
> 
> I will double check what is happening with both SW output and surface
> output.

I tested on a bunch of devices with different chipsets and they all fail at
the configuration step.

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