[vlc-devel] [PATCH v2 0/3] Add plugins for MMAL/Raspberry Pi
Julian Scheel
julian at jusst.de
Wed Apr 9 12:06:54 CEST 2014
Quick note: A v3 patch will follow later today, containing Makefile
fixes and a minor enhancement in the decoder behaviour.
Am 08.04.2014 10:28, schrieb Julian Scheel:
> ===
> Update summary v2:
> - Rework configure.ac to autodetect presence of mmal
> - Reformat code to avoid spaghetti lines
> - Amend NEWS, MODULES_LIST and POTFILES
> - For patch specific changes, see single patch mails
> ===
>
> This patch series introduces a decoder as well as a video output plugin using
> the Multi Media Abstraction Layer (mmal) by Broadcom, found on the Raspberry
> Pi. While there is support for the Raspberry Pi in the VLC OMX plugins already
> these plugins come with some advantages:
>
> - Support for zerocopy through opaque pointers
> - Support for native overlay blending through DispManX
> - Support for automatic HDMI mode adaptation through tvservice
> - Dramatically smaller/simpler code-base than the OMX plugins have, due to
> the ease of the MMAL API compared to OMX
>
> In our testing the plugins work very reliable already. As of now for building
> the decoder module the rpi-userland needs to be patched manually with the
> patches from:
> https://github.com/raspberrypi/userland/pull/160
>
> They should be mainlined into rpi-userland soon and will then be available
> through common Raspberry distribution updates.
>
> For the future we plan to add a deinterlace plugin, but for this we are
> pending on the Broadcom/Raspberry team to expose the deinterlace filters
> through MMAL API.
>
> Looking forward to see some comments!
>
> Cheers,
> Julian & Dennis
>
> Dennis Hamester (2):
> video_output/mmal: Add mmal based video output plugin
> codec/mmal: Add MMAL-based decoder plugin
>
> Julian Scheel (1):
> mmal: Register opaque fourcc in core as fake_fmt
>
> NEWS | 2 +
> configure.ac | 54 +++
> include/vlc_fourcc.h | 3 +
> modules/MODULES_LIST | 2 +
> modules/codec/Makefile.am | 10 +
> modules/codec/mmal.c | 578 ++++++++++++++++++++++++
> modules/video_output/Modules.am | 8 +
> modules/video_output/mmal.c | 951 ++++++++++++++++++++++++++++++++++++++++
> po/POTFILES.in | 2 +
> src/misc/fourcc.c | 3 +-
> 10 files changed, 1612 insertions(+), 1 deletion(-)
> create mode 100644 modules/codec/mmal.c
> create mode 100644 modules/video_output/mmal.c
>
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