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by longo92
Mon Aug 03, 2020 8:44 am
Forum: Networking and servers
Topic: [RPI-0w] Issue with new radio module firmware BCM43430 7.45.98.94
Replies: 0
Views: 76

[RPI-0w] Issue with new radio module firmware BCM43430 7.45.98.94

I'm writing this post because i notice that in your latest RPI-Os release (27 May) you update to the latest avalable radio firmware BCM43430 7.45.98.94 ( on package repository- see https://packages.debian.org/buster/firmware-brcm80211) . Do you find it stable? because dmesg rises error message durin...
by longo92
Fri Jul 31, 2020 9:08 am
Forum: Networking and servers
Topic: Update BCM43430 firmware
Replies: 3
Views: 447

Re: Update BCM43430 firmware

I'm resuming this post because i notice that in your latest RPI-Os release (27 May) you update to the latest avalable radio firmware BCM43430 7.45.98.94. Do you find it stable? because dmesg rises error message during scanning: brcmf_update_bss_info: wl dtim_assoc failed (-52). Digging into driver c...
by longo92
Wed Jul 22, 2020 8:09 am
Forum: Graphics programming
Topic: MMAL_EVENT_ERROR: MMAL_ECORRUPT
Replies: 1
Views: 242

Re: MMAL_EVENT_ERROR: MMAL_ECORRUPT

Another hint: in my application i have also two MMAL_COMPONENT_DEFAULT_IMAGE_DECODER, one for JPEG and the other for PNG. While the video si being decoded, the two image decoders do nothing (only created and input/output port enabled). The error seems linked to their co-existence: if i commet the co...
by longo92
Tue Jul 21, 2020 1:51 pm
Forum: Graphics programming
Topic: MMAL_EVENT_ERROR: MMAL_ECORRUPT
Replies: 1
Views: 242

MMAL_EVENT_ERROR: MMAL_ECORRUPT

Hi,
my video decoder trigger a control callback with MMAL_EVENT_ERROR, in detail MMAL_ECORRUPT (signaled by the data field of MMAL_BUFFER_HEADER_T). How can the decoder be recovered from this error ?

Thanks,
Alessandro
by longo92
Thu Jul 16, 2020 8:12 am
Forum: Graphics programming
Topic: How to check mmal logging message
Replies: 1
Views: 285

How to check mmal logging message

Hi, where i can find the mmal logging message?
I know that "export VC_LOGLEVEL=mmal:trace,mmalsrv:warn" is used to set the logging level.

Thanks,
Alessandro
by longo92
Mon Jul 13, 2020 1:00 pm
Forum: OpenMAX
Topic: MMAL Image decoder
Replies: 3
Views: 342

Re: MMAL Image decoder

Thanks for the clarification. Is there some doc where i can get the detalide info you gave me, in particular: GIF supports RGB565 BMP, PNG, PPM, and TGA support RGBA. JPEG supports I420 or I422. Or Do you gather them using OpenMax calls? However there are restrictions in that the decoders are decodi...
by longo92
Mon Jul 13, 2020 11:48 am
Forum: OpenMAX
Topic: MMAL Image decoder
Replies: 3
Views: 342

MMAL Image decoder

Hi, Is there a way to force the image decoder to use the pixel format on output port chosen by the user when enbaling the port, instead of being modified by MMAL_EVENT_FORMAT_CHANGED. I'm writing my own c++ image decoder class (wrapper around mmal decoder, based on this: https://github.com/6by9/user...
by longo92
Fri Jul 10, 2020 7:20 am
Forum: OpenGLES
Topic: Clarification about glTexSubImage2D on legacy-driver
Replies: 4
Views: 360

Re: Clarification about glTexSubImage2D on legacy-driver

Thanks for you precious clarification. BTW i think using this extension (supported by raspberry) you can achieve what i mean: https://www.khronos.org/registry/OpenGL/extensions/OES/OES_EGL_image_external.txt For example you can decode a video outputting EGL images (wich are already on GPU memory) an...
by longo92
Thu Jul 09, 2020 10:09 am
Forum: OpenGLES
Topic: Clarification about glTexSubImage2D on legacy-driver
Replies: 4
Views: 360

Clarification about glTexSubImage2D on legacy-driver

Hi,
A question about glTexSubImage2D implementation:
Is it possible that the raspberry pi 0 gpu legacy driver implementation performs a copy only of the pointer data (instead of an entire copy)?
It seems reasonable since the memory is unified.

Thanks,
Alessandro
by longo92
Mon Jul 06, 2020 4:08 pm
Forum: Graphics, sound and multimedia
Topic: An efficient way to convert pdf to png
Replies: 0
Views: 112

An efficient way to convert pdf to png

Hi,
I need to convert .pdf in png files (each page is a png), it must be performed on a raspberry pi 0. I try http://manpages.ubuntu.com/manpages/tru ... iro.1.html, but it is slow and a burden for the CPU, do you know some efficient tool (maybe hw accellerated)?


Thanks,
Alessandro
by longo92
Tue Jun 30, 2020 1:38 pm
Forum: OpenMAX
Topic: video_decode: B-frame support
Replies: 5
Views: 357

Re: video_decode: B-frame support

I'm asking that beacause i need to decode a video streaming from an IOs devices (Ipad pro 2nd gen) and android devices, and the IOs device has much more latency than Android on decoder (It is not a network problem). I see that the decoder must buffer more frames (compared to Android video streaming)...
by longo92
Tue Jun 30, 2020 1:19 pm
Forum: OpenMAX
Topic: video_decode: B-frame support
Replies: 5
Views: 357

Re: video_decode: B-frame support

dickon wrote: Umm. I don't know where you got that idea from, but all Pis back to the original B do H.264 high profile encode and decode, which requires B-slice support.
Read here: viewtopic.php?t=231368#p1417085
by longo92
Tue Jun 30, 2020 12:56 pm
Forum: OpenMAX
Topic: video_decode: B-frame support
Replies: 5
Views: 357

video_decode: B-frame support

Hi, i'm sure that the encoder does not support B-frames.
But what about the decoder? Can it handle them?

Thanks,
Alessandro
by longo92
Tue Jun 30, 2020 8:43 am
Forum: OpenMAX
Topic: video deocode: OMX_IndexConfigRefreshCodec parameter
Replies: 0
Views: 255

video deocode: OMX_IndexConfigRefreshCodec parameter

is OMX_IndexConfigRefreshCodec param of video_decode mapped in MMAL?

Thanks,
Alessandro
by longo92
Mon Jun 29, 2020 11:17 am
Forum: Raspberry Pi OS
Topic: Understanding how firmware update is handled
Replies: 1
Views: 230

Understanding how firmware update is handled

Hi, I write this post in order to have a sort of acknowledge on how the .deb files for firmware update are handled. Here you can find the latest stable firmware bin/library: https://github.com/raspberrypi/firmware/tree/stable. Reading this https://archive.raspberrypi.org/debian/pool/main/r/raspberry...
by longo92
Thu Jun 25, 2020 8:22 am
Forum: Networking and servers
Topic: Update BCM43430 firmware
Replies: 3
Views: 447

Re: Update BCM43430 firmware

Here https://community.cypress.com/docs/DOC-19375 i can find the latest firmware from cypress guys (AFAIK the official maintainers of brcm80211 driver code + firmware). -Updating to the latest firmware without using the latest driver code (i.e., using the brcmfmac.ko shipped with raspbian), could be...
by longo92
Wed Jun 24, 2020 11:42 am
Forum: General discussion
Topic: Updating the raspebrry pi firmware using a .deb file
Replies: 2
Views: 194

Re: Updating the raspebrry pi firmware using a .deb file

Thank you! I found also these packages
- libraspberrypi0: videocore libraries
- raspberrypi-bootloader: .bin file (firmware gpu)

I think that those packages are generated by the same stuff in your link, am i right?
by longo92
Wed Jun 24, 2020 10:46 am
Forum: General discussion
Topic: Updating the raspebrry pi firmware using a .deb file
Replies: 2
Views: 194

Updating the raspebrry pi firmware using a .deb file

Hi, Is there a way download a .deb file containing the latest stable firmware (GPU firmware + VideoCore library)? More precisely: is there the stable branch repository (https://github.com/raspberrypi/firmware/tree/stable) mirrored in a debian package ? I need to update a raspebrry pi offline by pass...
by longo92
Mon Jun 22, 2020 1:20 pm
Forum: Networking and servers
Topic: Update BCM43430 firmware
Replies: 3
Views: 447

Update BCM43430 firmware

Hi, i'm using raspberry pi 0-w with February buster release, It seems that the radio-module firmware is outdated ( October 2017) and using apt-get install firmware-brcm80211 it is updated to a newer version (October 2019). Is it safe? Does updating the firmware bring any problems? why the foundation...
by longo92
Thu Jun 18, 2020 10:02 am
Forum: OpenMAX
Topic: MMAL_PARAMETER_VIDEO_DECODE_ERROR_CONCEALMENTinfo
Replies: 1
Views: 294

MMAL_PARAMETER_VIDEO_DECODE_ERROR_CONCEALMENTinfo

What does MMAL_PARAMETER_VIDEO_DECODE_ERROR_CONCEALMENT mean? When should be set?


Thank,
Alessandro
by longo92
Thu Jun 18, 2020 6:58 am
Forum: Networking and servers
Topic: Compile the Network Manager (1.14.6)
Replies: 11
Views: 398

Re: Compile the Network Manager (1.14.6)

I've just recompiled and installed the network manager for a more aggressive roaming (https://www.phoronix.com/scan.php?page=news_item&px=NetworkManager-Roam-Aggressive) but it seems not change the behaviour. Is possible that the rule to switch AP is handled at wifi device-driver level? Could you po...
by longo92
Mon Jun 15, 2020 10:15 am
Forum: Networking and servers
Topic: Compile the Network Manager (1.14.6)
Replies: 11
Views: 398

Re: Compile the Network Manager (1.14.6)

Why not switch to Ubuntu 20.04 which uses the network manager rather than dhcpcd? Sorry, but i do not understand the question, i need to use O.S. raspbian stretch on my rpi0....and i want use network manager instead of dhcpcd. My issue is that network manager has signal strength thershold for roami...
by longo92
Mon Jun 15, 2020 9:50 am
Forum: Networking and servers
Topic: Compile the Network Manager (1.14.6)
Replies: 11
Views: 398

Re: Compile the Network Manager (1.14.6)

Hi, i need to compile and install the Network Manager from official repo https://github.com/NetworkManager/NetworkManager (tag 1.14.6). Do you know the correct steps to compile and install it on raspberry pi 0 with raspbian buster? Thank you, Alessandro Why not switch to Ubuntu 20.04 which uses the...
by longo92
Mon Jun 15, 2020 9:13 am
Forum: Networking and servers
Topic: Compile the Network Manager (1.14.6)
Replies: 11
Views: 398

Re: Compile the Network Manager (1.14.6)

I need to manually change the dBm threshold of AP switching during roaming (the threshold value is hardcoded) see:
https://www.phoronix.com/scan.php?page= ... Aggressive
So i need to recompile the NetworkManager.
by longo92
Mon Jun 15, 2020 9:01 am
Forum: Networking and servers
Topic: Compile the Network Manager (1.14.6)
Replies: 11
Views: 398

Compile the Network Manager (1.14.6)

Hi, i need to compile and install the Network Manager from official repo https://github.com/NetworkManager/NetworkManager (tag 1.14.6).
Do you know the correct steps to compile and install it on raspberry pi 0 with raspbian buster?


Thank you,
Alessandro

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