Here Im in Germany, Stuttgart to be more precise, for BlueZ meeting and UPF. Meeting already started and we will probably make the notes available here: http://www.bluez.org/development/. I will comment about the meeting latter on when I got some time.
UPF will be starting next week, oct 4th to 8th, and since this is my first time attending to such event I think there will be a lot of things to blog about, and finally after all the fun with bluetooth/BlueZ I will be heading to Amsterdam for the Maemo Summit where I will be participating on the BlueZ bof.
Thats it for today :D
Friday, October 2, 2009
Thursday, September 24, 2009
Bossa '10: Call for Presentation
For those interested in presenting something at bossa conference please follow this guidelines:
http://bossaconference.indt.org/programme/speakers-list
http://bossaconference.indt.org/programme/speakers-list
Monday, April 20, 2009
GSoC 2009
BlueZ was accepted as a organization in 2009 and granted with 6 slots (+1) on GSoC, we got a total of 37 proposals where just 2 were considered ineligible, and here are the projects as well as the students which will take part of program this year:
Student: Claudiu Coman
Mentors: Vinicius Gomes
Title: Generic HID
The idea is similar to remoko, which was part of last year GSoC program under openmoko organization, but aiming to be more generic and done as a plugin to bluetoothd.
Student: João Paulo Rechi Vita
Mentor: me
Title: A2DP Sink Role
Joao is back, he did the PulseAudio integration with bluez audio subsystem, but this time doing some work on the bluetoothd but not restrict to it since we want the plugins (alsa, PulseAudio and eventually gstreamer) too. Most of the code for avdtp/a2dp is already done so just small changes are really needed on bluetoothd, now for the plugins is a completely different story since the receiver can be a lot more complicated then the sender and sbc decoder is not as tested as the encoder.
Student: Gustavo Padovan
Mentor: Marcel Holtmann
Title: L2CAP Enhanced Retransmission Support
Marcel himself is going to mentor Gustavo which already started doing some code for either kernel and userspace. This is an optional L2CAP feature, that allows more control of the Error Rate and more information about the data flow, very useful for audio streaming.
Student: MO Faruque Sarker
Mentor: Claudio Takahasi
Title: A One-Step Bluetooth Device Setup Wizard Using 2D Data-matrix symbol
Very interesting and promising idea, very suitable for smart phones where cameras are very common. It can probably be used (or reuse) for other stuffs like cable association, so the devices doesn't need to stay on discoverable mode to be paired.
Student: Nehul Malhotra
Mentor: Claudio Takahasi
Title: SIM Access Client
SIM Access profile is one of the few profiles BlueZ has no support so far.
Student: Yasir Khan
Mentor: Vinicius Gomes
Title: Wireshark live capture integration
The idea is to have Wireshark fully replacing hcidump so we can really make use of wireshark for development.
Congratulations to all students.
Student: Claudiu Coman
Mentors: Vinicius Gomes
Title: Generic HID
The idea is similar to remoko, which was part of last year GSoC program under openmoko organization, but aiming to be more generic and done as a plugin to bluetoothd.
Student: João Paulo Rechi Vita
Mentor: me
Title: A2DP Sink Role
Joao is back, he did the PulseAudio integration with bluez audio subsystem, but this time doing some work on the bluetoothd but not restrict to it since we want the plugins (alsa, PulseAudio and eventually gstreamer) too. Most of the code for avdtp/a2dp is already done so just small changes are really needed on bluetoothd, now for the plugins is a completely different story since the receiver can be a lot more complicated then the sender and sbc decoder is not as tested as the encoder.
Student: Gustavo Padovan
Mentor: Marcel Holtmann
Title: L2CAP Enhanced Retransmission Support
Marcel himself is going to mentor Gustavo which already started doing some code for either kernel and userspace. This is an optional L2CAP feature, that allows more control of the Error Rate and more information about the data flow, very useful for audio streaming.
Student: MO Faruque Sarker
Mentor: Claudio Takahasi
Title: A One-Step Bluetooth Device Setup Wizard Using 2D Data-matrix symbol
Very interesting and promising idea, very suitable for smart phones where cameras are very common. It can probably be used (or reuse) for other stuffs like cable association, so the devices doesn't need to stay on discoverable mode to be paired.
Student: Nehul Malhotra
Mentor: Claudio Takahasi
Title: SIM Access Client
SIM Access profile is one of the few profiles BlueZ has no support so far.
Student: Yasir Khan
Mentor: Vinicius Gomes
Title: Wireshark live capture integration
The idea is to have Wireshark fully replacing hcidump so we can really make use of wireshark for development.
Congratulations to all students.
Sunday, March 22, 2009
Bossa Conference ‘09
Bossa '09 was great, a lot of good old faces around but also some new 'troll' faces. For those that missed any presentation we plan to make them available here or subscribe to the RSS feed here.
Here are some of the available presentation that I recommend:
Elementary – small, scaleable touchscreen widget set for mobile devices - Rasterman
Making videoconferencing easy, also in your application - Olivier Crete
The future of Qt - Thiago Macieira
Here are some of the available presentation that I recommend:
Elementary – small, scaleable touchscreen widget set for mobile devices - Rasterman
Making videoconferencing easy, also in your application - Olivier Crete
The future of Qt - Thiago Macieira
Friday, November 7, 2008
Jack of all trades, master of none
Pau pra toda obra (Brazilian Portuguese)
Aprendiz de todo, maestro de nada (Spanish)
devyni amatai – dešimtas badas (Lithuanian language)
Well, that is what reminds me some of so called portable/platform independent software we have around Linux environments. It sounds amazing specially in Brazilian Portuguese (literally, "wood for every construction") doesn't it? Just as in OpenOffice.org as it can be used in many platform a thing not even Office could do, so you can edit proprietary formats in many platforms including on the very own proprietary ones, really exciting don't you think?
When it comes to cross-platform everybody is interested, like recently from Linux userspace key Developers Aaron Seigo and Christian Schaller there was even a dispute between Phonon and Gstreamer where multi-platform shines like a popstar. Great so I can use Phonon with some proprietary framework on Windows or even better use Gstreamer as even it does work on windows too.
Oh, lets not forget Mono, the rockstar of the cross platform, wood for every construction even for those constructions that doesn't need wood, just a snake.
Aprendiz de todo, maestro de nada (Spanish)
devyni amatai – dešimtas badas (Lithuanian language)
Well, that is what reminds me some of so called portable/platform independent software we have around Linux environments. It sounds amazing specially in Brazilian Portuguese (literally, "wood for every construction") doesn't it? Just as in OpenOffice.org as it can be used in many platform a thing not even Office could do, so you can edit proprietary formats in many platforms including on the very own proprietary ones, really exciting don't you think?
When it comes to cross-platform everybody is interested, like recently from Linux userspace key Developers Aaron Seigo and Christian Schaller there was even a dispute between Phonon and Gstreamer where multi-platform shines like a popstar. Great so I can use Phonon with some proprietary framework on Windows or even better use Gstreamer as even it does work on windows too.
Oh, lets not forget Mono, the rockstar of the cross platform, wood for every construction even for those constructions that doesn't need wood, just a snake.
Sunday, September 21, 2008
plumbers conference
LPC was amazing, I might say it was the best conference I've attended so far. Im not a kernel hacker as someone may thought but even a userspace developer can say that we need more conferences like that. Let me summarize some talks/bofs I've been present at:
Audio
Lennart handled the audio miniconf which turns out to show how some alsa limitations, especially in its API documentation. The conclusion was that there are far too many project trying to solve but none offer a good pcm API which application could rely on. The audio bof was basically Lennart making sure Takashi know his alsa issues list. In addition to Lennart's list we also told Takashi we would like to have support for 'virtual' devices such as bluetooth headsets.
Video
Video miniconf was very interesting too, most about v4l2. In the driver area it seems that some common code is being duplicated so there is a plan to create an API to be used as core of new drivers. But for me the most interesting was the idea of user space daemon very similar to Pulse but for video which should solve most of the problem when trying to use a webcam on user space.
Boot
WOW I must say this miniconf was the big show of the conference, at least for me, the very first thing was a netbook booting on 5 sec. If there is something that can grab the attention more than a fancy ui demonstration that is a very amazing boot time. Im pretty sure that this presentation might change what most distros are doing nowadays, especially when the super read ahead (sReadAhead for short) code was released.
Power Management
Another pretty good minconf, olpc guys showing how they handled power managment on their device. Basically XO doesn't have an acpi so all is handled directly, sometimes they even turn off some chips to gain more hours of usage. In another presentation it was discussed that the more drivers support power management the more we salve power, although this may sound very obvious the real idea is to make more drivers power aware instead of just quality of a few.
DBus
Ok, that is my area, and as all the other it went pretty well. It started with discussion how to improve desktop experiency. Basically how DBus is changing the daemons around the linux desktop offering a better support/service to applications. Then the presentation about upstart 1.0, it was pretty cool to see the API for jobs on upstart, this might be usefull for most application/daemons that do want to spawn processes. After a small interruption the presentation continue with Marcel Holtmann talking about DBus on kernel, the reception of the audience was very good with few concerns, the fact of upstart requiring DBus to be started early during boot process may make the idea even more compelling than before.
10/10 for LTC
Next, BlueZ meeting.
Audio
Lennart handled the audio miniconf which turns out to show how some alsa limitations, especially in its API documentation. The conclusion was that there are far too many project trying to solve but none offer a good pcm API which application could rely on. The audio bof was basically Lennart making sure Takashi know his alsa issues list. In addition to Lennart's list we also told Takashi we would like to have support for 'virtual' devices such as bluetooth headsets.
Video
Video miniconf was very interesting too, most about v4l2. In the driver area it seems that some common code is being duplicated so there is a plan to create an API to be used as core of new drivers. But for me the most interesting was the idea of user space daemon very similar to Pulse but for video which should solve most of the problem when trying to use a webcam on user space.
Boot
WOW I must say this miniconf was the big show of the conference, at least for me, the very first thing was a netbook booting on 5 sec. If there is something that can grab the attention more than a fancy ui demonstration that is a very amazing boot time. Im pretty sure that this presentation might change what most distros are doing nowadays, especially when the super read ahead (sReadAhead for short) code was released.
Power Management
Another pretty good minconf, olpc guys showing how they handled power managment on their device. Basically XO doesn't have an acpi so all is handled directly, sometimes they even turn off some chips to gain more hours of usage. In another presentation it was discussed that the more drivers support power management the more we salve power, although this may sound very obvious the real idea is to make more drivers power aware instead of just quality of a few.
DBus
Ok, that is my area, and as all the other it went pretty well. It started with discussion how to improve desktop experiency. Basically how DBus is changing the daemons around the linux desktop offering a better support/service to applications. Then the presentation about upstart 1.0, it was pretty cool to see the API for jobs on upstart, this might be usefull for most application/daemons that do want to spawn processes. After a small interruption the presentation continue with Marcel Holtmann talking about DBus on kernel, the reception of the audience was very good with few concerns, the fact of upstart requiring DBus to be started early during boot process may make the idea even more compelling than before.
10/10 for LTC
Next, BlueZ meeting.
Monday, August 18, 2008
pulseaudio + bluetooth
It seems Joao Paulo have been pretty busy lately working on bluetooth audio support for pulseaudio, and here is a preview of his work:
So pulseaudio are now able to handle bluetooth audio devices (a2dp and hsp), there are still some missing features that we want to add, a proper wizard on BlueZ to pair/connect those devices and some bug which we should take care before releasing the code so don't expect it to work flawless.
kudos to Joao Paulo and lennart
So pulseaudio are now able to handle bluetooth audio devices (a2dp and hsp), there are still some missing features that we want to add, a proper wizard on BlueZ to pair/connect those devices and some bug which we should take care before releasing the code so don't expect it to work flawless.
kudos to Joao Paulo and lennart
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