[solved] mmal hardware acceleration works only with root

[acconciox]

Hi, if i run
$this->bbcode_second_pass_code('', 'mpv movie.mkv # or mp4 or .VOB')
i get this message;
$this->bbcode_second_pass_code('', 'mmal: mmal_vc_shm_init: could not initialize vc shared memory service
mmal: mmal_vc_component_create: failed to initialise shm for 'vc.ril.video_render' (7:EIO)
mmal: mmal_component_create_core: could not create component 'vc.ril.video_render' (7)')

if i run
$this->bbcode_second_pass_code('', '·sudo mpv movie.mkv # it works with hardware acceleration even if i dont know where get the --vo --hwdec description as root ')

Im using ffmpeg-mmal and mpv-rpi
$this->bbcode_second_pass_code('', ' $ pacman -Qi mpv-rpi
Nome : mpv-rpi
Versione : 1:0.29.1-1
Descrizione : mpv with Raspberry Pi support
Architettura : armv7h
URL : https://mpv.io/
Licenze : GPL3
Gruppi : Nessuno
Fornisce : mpv
Dipenda da : desktop-file-utils ffmpeg-mmal hicolor-icon-theme jack
lcms2 libarchive libcaca libcdio-paranoia libdvdnav libgl
libva libxinerama libxkbcommon libxrandr libxss libxv
lua52 rubberband smbclient uchardet vulkan-icd-loader
wayland xdg-utils
Dipendenze opzionali : youtube-dl: for video-sharing websites playback [installato]
Richiesto da : Nessuno
Opzionale per : Nessuno
Conflitti con : mpv
Sostituisce : Nessuno
Spazio richiesto : 3,81 MiB
Pacchettizzatore : Unknown Packager
Data di creazione : dom 29 set 2019, 18:25:22
Data di installazione : dom 29 set 2019, 18:34:11
Motivo dell'installazione : Installato esplicitamente
Script di install : No
Convalidato da : Nessuno

$ pacman -Qi ffmpeg-mmal
Nome : ffmpeg-mmal
Versione : 1:4.2-1
Descrizione : ffmpeg built with MMAL hardware acceleration support for Raspberry Pi
Architettura : armv7h
URL : https://ffmpeg.org/
Licenze : GPL3
Gruppi : Nessuno
Fornisce : ffmpeg libavcodec.so=58-32 libavdevice.so=58-32 libavfilter.so=7-32 libavformat.so=58-32
libavutil.so=56-32 libpostproc.so=55-32 libswresample.so=3-32 libswscale.so=5-32
Dipenda da : alsa-lib bzip2 fontconfig fribidi gmp gnutls gsm jack lame libass.so=9-32 libavc1394
libbluray.so=2-32 libdav1d.so=2-32 libdrm libfreetype.so=6-32 libiec61883 libmodplug libomxil-bellagio
libpulse libraw1394 libsoxr libssh libtheora libva.so=2-32 libva-drm.so=2-32 libva-x11.so=2-32
libvdpau libvidstab.so=1.1-32 libvorbisenc.so=2-32 libvorbis.so=0-32 libvpx.so=6-32 libwebp libx11
libx264.so=157-32 libx265.so=176-32 libxcb libxext libxml2 libxv libxvidcore.so=4-32 opencore-amr
openjpeg2 opus raspberrypi-firmware sdl2 speex v4l-utils xz zlib
Dipendenze opzionali : ladspa: LADSPA filters [installato]
Richiesto da : chromaprint chromium ffmpegthumbnailer firefox freerdp gst-libav mpv-rpi qt5-webengine vapoursynth
vlc x264-git
Opzionale per : libde265 xmms2 youtube-dl youtube-dl-gui-git
Conflitti con : ffmpeg
Sostituisce : Nessuno
Spazio richiesto : 25,89 MiB
Pacchettizzatore : Unknown Packager
Data di creazione : dom 29 set 2019, 17:02:31
Data di installazione : dom 29 set 2019, 18:24:49
Motivo dell'installazione : Installato esplicitamente
Script di install : No
Convalidato da : Nessuno')
The normal behaviour should be mpv working as usual with this kind of mpv.conf
$this->bbcode_second_pass_code('', '
#
# Example mpv configuration file
#
# Warning:
#
# The commented example options usually do _not_ set the default values. Call
# mpv with --list-options to see the default values for most options. There is
# no builtin or example mpv.conf with all the defaults.
#
#
# Configuration files are read system-wide from /usr/local/etc/mpv.conf
# and per-user from ~/.config/mpv/mpv.conf, where per-user settings override
# system-wide settings, all of which are overridden by the command line.
#
# Configuration file settings and the command line options use the same
# underlying mechanisms. Most options can be put into the configuration file
# by dropping the preceding '--'. See the man page for a complete list of
# options.
#
# Lines starting with '#' are comments and are ignored.
#
# See the CONFIGURATION FILES section in the man page
# for a detailed description of the syntax.
#
# Profiles should be placed at the bottom of the configuration file to ensure
# that settings wanted as defaults are not restricted to specific profiles.

##################
# video settings #
##################

# Start in fullscreen mode by default.
#fs=yes

# force starting with centered window
geometry=100%:0%

# don't allow a new window to have a size larger than 90% of the screen size
# autofit-larger=50%x50%

# Do not close the window on exit.
#keep-open=yes

# Do not wait with showing the video window until it has loaded. (This will
# resize the window once video is loaded. Also always shows a window with
# audio.)
#force-window=immediate

# Disable the On Screen Controller (OSC).
osc=no

# Keep the player window on top of all other windows.
# ontop=yes

# Specify default video driver (see --vo=help for a list).
# vo=opengl
# vo=rpi:background
vo=rpi
# Specify high quality video rendering preset (for OpenGL VO only)
# Can cause performance problems with some drivers and GPUs.
#profile=opengl-hq

# Force video to lock on the display's refresh rate, and change video and audio
# speed to some degree to ensure synchronous playback - can cause problems
# with some drivers and desktop environments.
#video-sync=display-resample

# Enable hardware decoding if available. Often, this does not work with all
# video outputs, but should work well with default settings on most systems.
# If performance or energy usage is an issue, forcing the vdpau or vaapi VOs
# may or may not help.
# hwdec=rpi,auto
# Questa istruzione va ripristinata per mmal
# RIPRISTINARE
# vo=rpi
# vo=xv
hwdec=mmal
# hwdec-codecs=mpeg4,h264,mpeg2
hwdec-codecs=all
##################
# audio settings #
##################
audio-exclusive=yes
ad-lavc-downmix=no
alsa-resample=no
# Specify default audio driver (see --ao=help for a list).
ao=alsa
# ad=ac3,aac,aac_fixed,stereo
#ad=spdif:ac3,spdif:dts,ac3,aac,aac_fixed,auto
alsa-mixer-name=IQaudIO DAC HiFi pcm512x-hifi-0
audio-device=alsa/sysdefault:CARD=IQaudIODAC
# Disable softvol usage, and always use the system mixer if available.
# softvol=no
# Do not filter audio to keep pitch when changing playback speed.
#audio-pitch-correction=no

# Output 5.1 audio natively, and upmix/downmix audio with a different format.
#audio-channels=5.1
# Disable any automatic remix, _if_ the audio output accepts the audio format.
# of the currently played file. See caveats mentioned in the manpage.
# (This is the default.)
#audio-channels=auto
#ignore-chmap=yes
##################
# other settings #
##################

# Pretend to be a web browser. Might fix playback with some streaming sites,
# but also will break with shoutcast streams.
#user-agent="Mozilla/5.0"

# cache settings
#
# Use 150MB input cache by default. The cache is enabled for network streams only.
#cache-default=153600
# #
# Use 150MB input cache for everything, even local files.
# cache=256000
#
# Disable the behavior that the player will pause if the cache goes below a
# certain fill size.
#cache-pause=no
#
# Read ahead about 5 seconds of audio and video packets.
#demuxer-readahead-secs=5.0
#
# Raise readahead from demuxer-readahead-secs to this value if a cache is active.
#cache-secs=50.0

# Display English subtitles if available.
#slang=en

# Play Finnish audio if available, fall back to English otherwise.
#alang=fi,en

# Change subtitle encoding. For Arabic subtitles use 'cp1256'.
# If the file seems to be valid UTF-8, prefer UTF-8.
#sub-codepage=utf8:cp1256


# You can also include other configuration files.
#include=/path/to/the/file/you/want/to/include


############
# Profiles #
############

# The options declared as part of profiles override global default settings,
# but only take effect when the profile is active.

# The following profile can be enabled on the command line with: --profile=invert

#[invert]
# The profile forces this video filter:
#vf-add=flip
save-position-on-quit
volume=30
#volume-max=600
# verbose parziale:
msg-level=af=v:ao=v:ad=v

')

if i play sudo mpv movie.mkv
$this->bbcode_second_pass_code('', '
(+) Video --vid=1 (mpeg2video 720x576 25.000fps)
(+) Audio --aid=1 (ac3 6ch 48000Hz)
Audio --aid=2 (ac3 6ch 48000Hz)
Audio --aid=3 (ac3 6ch 48000Hz)
Audio --aid=4 (ac3 6ch 48000Hz)
Using hardware decoding (mmal).
VO: [rpi] 720x576 => 1024x576 mmal
AO: [alsa] 48000Hz stereo 2ch float
')

i need to start mpv without sudo as usual.
about the same problem this viewtopic.php?f=60&t=13737
but now seems a new clue

[graysky]

Not sure but thinking your regular users needs privileges to a few hardware decodes. See what we do in the kodi package for members in the video group: https://github.com/archlinuxarm/PKGBUIL ... kodi.rules or for RPi4: https://github.com/archlinuxarm/PKGBUIL ... kodi.rules

[acconciox]

thanks ! this way it works is this a correct way?
added:
$this->bbcode_second_pass_code('', '
% cat /etc/udev/rules.d/raspberrypi.rules
# fix for /dev/vcio
SUBSYSTEM=="bcm2708_vcio",GROUP="video",MODE="0660"
# fix for /dev/vcsm
SUBSYSTEM=="vc-sm",GROUP="video",MODE="0660"
')

[graysky]

You can probably just use the file I linked and just add your user to the video group.