2 2
martos

Compile FFmpeg aml for S905w

Recommended Posts

the same with kavas:

[h264_v4l2m2m @ 0xaaaaf4606910] Could not find a valid device
[h264_v4l2m2m @ 0xaaaaf4606910] can't configure decoder

In my opinion i must have /dev/video0

( ely ): You should get a /dev/video0 node if the decoder probe was successful

And in dmesg

[    6.889112] libphy: stmmac: probed
[    7.129018] meson_pwrc_vdec_power_on
[    7.129024] meson_pwrc_vdec_setup_clk
[    7.129505] Requesting IRQ 32
[    7.129702] meson_pwrc_vdec_power_off
[    7.762147] vdec_open
[    7.762166] vdec_querycap
[    7.762305] vdec_close

 

And i don't have /dev/video0 and no vdec in dmesg ...

Share this post


Link to post
Share on other sites

I think i need the PC to use cross-compilation, it seem easier to run the build on the device BUT i don't find an "how to" for make a VM for cross compiling vm kernel.
Could some one can give me some link to make it ?

Share this post


Link to post
Share on other sites
13 minutes ago, martos said:

I think i need the PC to use cross-compilation, it seem easier to run the build on the device BUT i don't find an "how to" for make a VM for cross compiling vm kernel.
Could some one can give me some link to make it ?

Many clue you can find in armbian documentation... And you can compile "kernel only" for s9xx box from balbes150 fork https://github.com/150balbes/Build-Armbian

Share this post


Link to post
Share on other sites

So install in my PC

https://www.virtualbox.org/wiki/Downloads

create vm ( 10 CPU 16 G Ram ) with

http://archive.ubuntu.com/ubuntu/dists/xenial-updates/main/installer-amd64/current/images/netboot/mini.iso

 

minimal +

sudo apt-get install sed wget cvs subversion git-core \
  coreutils unzip texi2html texinfo docbook-utils \
  gawk python-pysqlite2 diffstat help2man make gcc build-essential g++ \
  desktop-file-utils chrpath default-jre gettext zip

sudo apt-get update -qq && sudo apt-get -y install \
  autoconf \
  automake \
  build-essential \
  cmake \
  git-core \
  libass-dev \
  libfreetype6-dev \
  libsdl2-dev \
  libtool \
  libva-dev \
  libvdpau-dev \
  libvorbis-dev \
  libxcb1-dev \
  libxcb-shm0-dev \
  libxcb-xfixes0-dev \
  pkg-config \
  texinfo \
  wget \
  zlib1g-dev

sudo apt-get install yasm

sudo apt-get -y install bc curl gcc git libssl-dev libncurses5-dev lzop make u-boot-tools

sudo apt-get install locate mc

 

download kernel

git clone https://github.com/Elyotna/linux

 

sudo apt-get install flex bison

sudo apt-get install elfutils

make menuconfig
save

make -j10

 

waiting ...

 

Share this post


Link to post
Share on other sites

Could you give me some information :

it's on the menuconfig where it's choose arm compile ? the S905 cpu ?

How i choose the dtb to compile ?

How i can install the kernel ? ( if i don't make mistake )

 

ps: it's the firts time where i see my PC at the max for long time ...  35 minutes ...

Share this post


Link to post
Share on other sites

i find the command :

 cat /proc/config.gz | gunzip | less

give this :
#
# Automatically generated file; DO NOT EDIT.
# Linux/arm64 4.18.0-rc5 Kernel Configuration
#

#
# Compiler: aarch64-linux-gnu-gcc (Linaro GCC 7.2-2017.11) 7.2.1 20171011
#
CONFIG_ARM64=y
CONFIG_64BIT=y
CONFIG_MMU=y
CONFIG_ARM64_PAGE_SHIFT=12
CONFIG_ARM64_CONT_SHIFT=4
CONFIG_ARCH_MMAP_RND_BITS_MIN=18
CONFIG_ARCH_MMAP_RND_BITS_MAX=33
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=11
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
CONFIG_NO_IOPORT_MAP=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y

...

 

because i don(t find how create Elyotna kernel ,

I try to build Build-Armbian

 git clone https://github.com/150balbes/Build-Armbian

cd Build-Armbian

./compile.sh

but error :

 

[ error ] ERROR in function compile_kernel [ compilation.sh:362 ]
[ error ] Kernel was not built [ @host ]
[ o.k. ] Process terminated

 

Works if i don't choose dev :

[ o.k. ] Done building [ /home/martos/Build-Armbian/output/images/Armbian_5.44_S9xxx_Ubuntu_bionic_4.18.0-rc7-next-20180731-g85eac38-dirty_server.img ]
[ o.k. ] Runtime [ 29 min ]

So my vm it's ok, but i don't know how compile Elyotna kernel ...

 

Share this post


Link to post
Share on other sites

If someone can help me ... i am near but if someone can give a sample or a explain me...

Share this post


Link to post
Share on other sites

ELY REPLY :

 

Before I write down a small guide, I want to make sure of a few things:

- The driver is not suitable for any production workflow at the moment. It's been tested with limited samples and will have bugs.
- There's no deinterlacing support, so if you capture from a DVB source it's likely going to look bad.
- What are you going to do with the decoded frames if you can't transcode them ? Encoding them with software might prove to be painfully slow as the frames' buffers are uncached for CPU.

With that said, here's a quick cross-compile-your-kernel guide:

1) Grab a toolchain such as gcc-linaro-7.2.1-2017.11-x86_64_aarch64-linux-gnu.
Uncompress it somewhere like /opt

2) cd into your kernel repository and create a file source-build. Edit it and put this as the content:
 

Code: Select all

export ARCH=arm64
export CROSS_COMPILE=/opt/gcc-linaro-7.2.1-2017.11-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-


3) source it
 

Code: Select all

$ source ./source-build


4) Only to do once - initialize your default .config from defconfig
 

Code: Select all

$ make defconfig


This defconfig enables most arm64 things for every SoC.

5) Menuconfig to disable what you don't need (all the archs except MESON for instance..), and enable things like the vdec (CONFIG_VIDEO_AML_MESON_VDEC)
 

Code: Select all

$ make menuconfig


6) Build the Image and the dtb
 

Code: Select all

$ make -j10 Image amlogic/meson-gxbb-odroidc2.dtb


And then you can push those 2 files to your board, I don't know specifically how it's done with your distro though. Hopefully you have a mainline u-boot and the kernel/dtb are somewhere in /boot.
The dtb will end up at ./arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dtb, while Image will be at the root directory.

If you want to use the vdec, you'll also need to download additional firmware from here. Place the meson directory in /lib/firmware on your board.

Share this post


Link to post
Share on other sites

Compil Armbian_5.44_S9xxx_Ubuntu_bionic_4.18.0-rc7-next-20180731-g85eac38-dirty_server ok

Compil Elyotna kernell ok

Now i make the test Armbian with Elyotna kernel

 

1 test

Armbian_5.44_S9xxx_Ubuntu_bionic_4.18.0-rc7-next-20180731-g85eac38-dirty_server

boot

Boot ok

 

ok i have the file "Image" of Elyotna kernell

But the Armbian at the boot i have

zImage

and vmlinuz-4.18.0-rc7-next-20180731-aml-s9xxx-g85eac38-dirty ( same size i think this file it not use )

 

How i can change the kernel ?

i try to rename Image in zImage and copy into vmlinuz-4.18.0-rc7-next-20180731-aml-s9xxx-g85eac38-dirty

But it's not work ...

 

Someone have an idea ?

 

i can change :

make -j10 Image amlogic/meson-gxbb-odroidc2.dtb

to

make -j10 zImage amlogic/meson-gxl-s905x-khadas-vim.dtb

 

i have : make: *** Aucune règle pour fabriquer la cible « zImage ». Arrêt.

Share this post


Link to post
Share on other sites

Rename Image it to zImage. Process with mkimage vmlinuz-4.18.0-rc7-next-20180731-aml-s9xxx-g85eac38-dirty utility to get a uInitrd file (this is an initrd in a format that understands u-boot) and copy these files with replacement to the BOOT (FAT) partition.

And don't forget to copy the kernel modules.

Share this post


Link to post
Share on other sites

Stop all !

It's works !!!

i try last librelec dev  ( LibreELEC-Khadas_VIM.arm-9.0-devel-20180731153357-778b48a.img.gz )

i see the meson firmware installed

When i launch

 ffmpeg -vcodec h264_v4l2m2m -i http://192.168.1.50:8001/+1:0:19:401:4:20FA:EEEE0000:0:0:0: -s 320x240 /tmp/test.mp4

the drivers is used :

 

[h264_v4l2m2m @ 0x295e490] driver 'meson-vdec' on card 'AMLogic Video Decoder'
[h264_v4l2m2m @ 0x295e490] Using device /dev/video0
[h264_v4l2m2m @ 0x295e490] driver 'meson-vdec' on card 'AMLogic Video Decoder'
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (h264_v4l2m2m) -> mpeg4 (native))
  Stream #0:1 -> #0:1 (eac3 (native) -> aac (native))
Press [q] to stop, [?] for help
[aac @ 0x29582d0] Using a PCE to encode channel layout

 

i begin to test .

Share this post


Link to post
Share on other sites

ely have repy :

I'm confident the performance is going to be poor when doing software scale/encode on v4l2 frames.

(with HW )

ffmpeg -c:v h264_v4l2m2m -i Sintel.2010.720p.mkv -c:a copy -vcodec mpeg4 -s 320x240 /tmp/test.mp4
frame=  191 fps=8.5 q=4.7 Lsize=    1136kB time=00:00:10.52 bitrate= 884.2kbits/s speed=0.466x

(without HW )

ffmpeg -i Sintel.2010.720p.mkv -c:a copy -vcodec mpeg4 -s 320x240 /tmp/test.mp4

frame= 1345 fps= 79 q=17.9 Lsize=    5990kB time=00:00:56.19 bitrate= 873.2kbits/s speed=3.28x


The reason behind this is that the frames that come out of the decoder via V4L2 have pages with CPU cache disabled, so any software access is very, very slow.

 

BUT memeka ( dev who use hardware accelerator for exynos chip with MFC who use too v4l2m2m ) ask:

can something like this: https://github.com/mihailescu2m/linux/compare/b5edc85935d83e48a973a6e730706ac3cd255746...53f47a87e0aa8e25e960d42ee56ef79c5c91e9c8 be done for S905 SoC as well?

 

So i am waiting to make new test ...

 

Share this post


Link to post
Share on other sites

ELY had a cache to improve performance (memeka proposal):

So, I could *sorta* replicate the patches, I had to drop the cache maintenance because it was crashing but could still enable read cache (although of course it's not really usable since some of the data will be corrupted by cache).

Software decoding:

ffmpeg -i Sintel.2010.720p.mkv -an -vcodec mpeg4 -s 320x240 -vframes 1500 -f null -
frame= 1500 fps= 79 q=10.2 Lsize=N/A time=00:01:02.50 bitrate=N/A speed=3.28x   

 

ffmpeg -i bbb_sunflower_1080p_60fps_normal.mp4 -an -vcodec mpeg4 -s 320x240 -vframes 1500 -f null -
frame= 1500 fps= 40 q=31.0 Lsize=N/A time=00:00:25.03 bitrate=N/A speed=0.673x


HW decoding + read cache:

ffmpeg -c:v h264_v4l2m2m -i Sintel.2010.720p.mkv -an -vcodec mpeg4 -s 320x240 -vframes 1500 -f null -
frame= 1500 fps= 84 q=10.2 Lsize=N/A time=00:01:02.50 bitrate=N/A speed= 3.5x

 

ffmpeg -c:v h264_v4l2m2m -i bbb_sunflower_1080p_60fps_normal.mp4 -an -vcodec mpeg4 -s 320x240 -vframes 1500 -f null -
frame= 1500 fps= 40 q=31.0 Lsize=N/A time=00:00:25.03 bitrate=N/A speed=0.661x


720p had a slight advantage (6%).
On the 1080p sample the bottleneck was elsewhere (probably mpeg4 encoder not being able to take full multi-thread advantage on such a small resolution), as CPU usage was 300% for software decoding and 100% for HW decoding.
The performance gains would probably be more significant if encoding at a higher resolution or with x264.

 

when the code isok, i can test h264 to know if we can have 1080p -> 320x240 with speed 1.x

 

 

Share this post


Link to post
Share on other sites

hi

after compile build

i  tested libreelec 9 with kernel 4.18 r7  for wetek play 2 

 

video is work  fine  nice  i  tested hd  x264   p1080

 

 

 

Share this post


Link to post
Share on other sites

some change

https://github.com/Elyotna/linux

but i don't think its important change ...

 

vdec: Rework the recycle mechanism

Now the thread code appears only once in vdec.c. Added can_recycle and recycle codec ops. Also remove "meson" from the dts compatibles. I've decided to no longer force push into my dev branch to better track the changes I make. Patchset will be redone cleanly for 4.19.

Share this post


Link to post
Share on other sites

Yes, I make it with V4l2-m2m , but this way don't use all the hardware ,

so we can use use for decode in realtime (it's not perfect at all ) , but not for encode .

So for Amlogic ( or other device using the v4l2_m2m ) it's not enough ok for me ( just reduce cpu using )

For rockchip i wait the encode hardware in mpp ( in the roadmap this year ) and someone in the ffmpeg team have a look on my ticket ( open 6 month ago )

Share this post


Link to post
Share on other sites
8 minutes ago, martos said:

Yes, I make it with V4l2-m2m , but this way don't use all the hardware ,

so we can use use for decode in realtime (it's not perfect at all ) , but not for encode .

So for Amlogic ( or other device using the v4l2_m2m ) it's not enough ok for me ( just reduce cpu using )

For rockchip i wait the encode hardware in mpp ( in the roadmap this year ) and someone in the ffmpeg team have a look on my ticket ( open 6 month ago )

I am interested in decoding for S9xxx. You can write details, what kernel do you use, what kernel config do you use ? What are the FFMPEG source code and build option ?

Share this post


Link to post
Share on other sites

normaly i write all i use in the begining of the post, but i try it again this week end ( i m not at home this week) with the new kernel and put here the details.

Share this post


Link to post
Share on other sites
7 hours ago, martos said:

normaly i write all i use in the begining of the post, but i try it again this week end ( i m not at home this week) with the new kernel and put here the details.

I figured out the FFMPEG build. Details in this post. Testing the decoder seems to work correctly (there is a noticeable difference with the soft mode), but so far there is an incomprehensible situation with the use of FFPLAY.

 

 

Share this post


Link to post
Share on other sites
On 1/31/2019 at 6:37 AM, martos said:

normaly i write all i use in the begining of the post, but i try it again this week end ( i m not at home this week) with the new kernel and put here the details.

Hello, I have encountered a similar problem, I want to use ff-mpeg hardware accelerated decoding on the s905D armbian system, but I did not find the relevant information on the Internet, and s905 on the le kodi can be hardware accelerated decoding. Do you know what I should do on armbian.

I look forward to your reply, thank you very much!

 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
2 2