linaro-multimedia

linaro-multimedia@lists.linaro.org

60 discussions

by Yang Zhang

I want to join the group Yang Zhang Home software Enabling Engineer, ARM Phone: +86-21-6229-0729 ext. 681 Email: yang.zhang(a)arm.com<mailto:yang.zhang@arm.com> -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.

14 years, 11 months

UMM feature suggestion

by Benjamin Gaignard

Hi, I got a suggestion (from a ST-E colleague) to help debug with futur UMM. The idea is to add a "comment" to each allocated buffer and with cat /proc/umm you get a list of all the allocated buffers + the associated comment. The comment is only a string and you can put what you want it. For example you can just put the line of the file where the allocation is done or something like "h264 1080p frame". I think it could be very useful for debug if we could add this. Benjamin

14 years, 11 months

Media/hardware capabilities wiki chart and test content

by Kurt Taylor

As we discussed in today's MMWG technical status call, Vishal is working on a test content spec, which led to producing a chart of the multimedia format capabilities of all the Linaro supported development boards. This is similar to what I started for audio, but I think it makes sense to cover all multimedia formats. Vishal, if you could create a wiki page for us to populate, that would be great. Here is a great example from Android, I'd like to see us produce something like this: http://developer.android.com/guide/appendix/media-formats.html I would like for us all to contribute to this capabilities chart. It won't take long if we all contribute. If you can find out the specifics on a board that uses your companies technology, or if you have the specs to a dev board you can get your hands on, or if you can contact someone you know, please do. This would be a very useful reference chart for everyone wanting to use or develop on these platforms. The blueprint for this work is at: https://blueprints.launchpad.net/linaro-multimedia-wg/+spec/multimedia-lina… Alexander could you assign this to Vishal? If you missed today's MMWG tech call, we missed you. Please plan on attending next week. I'll send out a reminder in advance. -- Kurt Taylor (irc krtaylor)

14 years, 11 months

Re: Linaro Board meeting: GFX kernel + working out of box LEB

by Zach Pfeffer

Adding linaro-multimedia who also cannot see video on Panda. On 3 May 2011 03:48, Jim Huang <jim.huang(a)linaro.org> wrote: > On 3 May 2011 16:19, Alexander Sack <asac(a)linaro.org> wrote: >> On Mon, May 2, 2011 at 10:44 PM, Zach Pfeffer <zach.pfeffer(a)linaro.org> wrote: >>> E/FramebufferNativeWindow( 2057): couldn't open framebuffer HAL (No such device) >> >> yes, this is the problem. Jim says this works for him. He should have >> exact info what is needed to make this happen. The kernel Jim gave me >> didnt work for me either, so I think that Jim must have more changes >> locally that are not in our clean leb-panda build. >> > > Alternatively, we can roll back to Froyo based GFX, which worked for me, too. > > I'm pulling from omap kernel again and rebuilding from scratch. Will > confirm you guys soon. > > Thanks, > -jserv >

14 years, 12 months

linaro-android track

by Zach Pfeffer

All, I apologize for the broad distribution. Alexander and I have been getting the Android track going. We have the following topics. Most of these have subscribers. Would everyone mind taking a look through this list and subscribing or suggesting people who should be involved? I'll be getting more details into each of these this week. Hosting and Distribution of Linaro Builds https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-buil… This topic will focus on building and distributing Linaro Android builds. Topics will include: binary and source distribution, source and binary overlays (proprietary components and blobs from TI, Samsung, etc), license click-through, build and distribution location or method (host images and/or support on-demand image builds) and release tagging and naming. Subscribe: https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-buil… Android Code Review https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-code… This discussion will focus on Android code review. Topics will include Gerrit, continuous integration, maintainers, reviewers and validation. We'll focus on integrating the Android development model with Linaro. Subscribe: https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-code… Android Continuous Integration and Building https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-cont… This discussion will focus on Linaro Android continuous integration and builds. Topics include: infrastructure and validation requirements, test subsets for merges and unit testing. Subscribe: https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-cont… Android LEB Validation and Test Suite https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-vali… This discussion will focus on LEB validation and test suites. Topics will include: Monkey, CTS, Monkeyrunner, unit-tests, continuous integration merge tests. Subscribe: https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-vali… 2011 ELC Follow Up and Planning https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-2011… Linaro had a good meeting at the 2011 Embedded Linux Conference. Many things were discussed. This session will talk about next steps and future planning. Subscribe: https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-2011… Android Hardfloat Experiment https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-hard… This session will discuss strategies to find hot-spots that could benefit from hardfloat without breaking overall binary compatibility with market apps. Subscribe: https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-hard… Android LEB Documentation https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-leb-… This session will focus on discussing what documentation we need for LEB use and bundled with releases. Subscribe: https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-leb-… Linaro Android Toolchain Distribution https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-tool… This session will discuss how to distribute the various components of the Linaro toolchain. We'll discuss NDK and platform distribution, support on Ubuntu, Fedora and Mac, what components do we need to publish and benchmarking toolchain improvements. Subscribe: https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-tool… LEB Board Review and Deliverable Requirements https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-leb-… This discussion will talk about defining new member deliverable for Android LEBs, reviewing what's been delivered and assessing if we can raise the bar, discuss other low-cost high-volume board that currently exist or are on the way (Nexus One, Nexus S, Snowball), talk about LEB candidates, discuss cost ceilings (is the Elba board too expensive, for instance). Subscribe: https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-leb-… Open Source Development for Non-Application Cores https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-non-… This session will explore how to open up development for the various DSP and video cores that exist on many SoCs that are running Android to allow open source development of multimedia acceleration. Subscribe: https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-non-… Upstream Android Build https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-upst… This topic will discuss which changes we can upstream. Subscribe: https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-upst… ADB Shell Improvements https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-adb-… The adb shell lacks many features we take for granted. There is a need for a little more functionality, this session will discuss this. Subscribe: https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-adb-… Android Beyond Phones and Advanced Topics https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-beyo… This session will discuss the future of Android. It'll be a brainstorming session to talk about topics like: dual lib (bionic/glibc) support in Android, bringing apt-get into Android, Android as a general computing platform, expanded enterprise networking, expanded packages, traditional Linux application support, security certification and headless Android. Subscribe: https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-beyo… JTAG for the World https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-jtag This session will talk about improving tools for Ubuntu hosted JTAG tools, open JTAG script development and available JTAG platforms. Subscribe: https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-o-jtag… -Zach

15 years

TSC Multimedia TRs to Blueprints

by Kurt Taylor

At the last TSC meeting we refined the list of TRs for the Multimedia team. https://wiki.linaro.org/Cycles/1111/TechnicalTopics/Multimedia I have taken the liberty to put these into a wiki page based on the feedback received during the meeting and some new items added after. Unless told otherwise, I will be creating the Multimedia WG blueprints from this list. Here they are sorted by priority: https://wiki.linaro.org/WorkingGroups/Middleware/Multimedia/BlueprintsFor11… Please review and be thinking about any questions you have, as well as a rough sizing for the amount of work required. Comments? Kurt Taylor (irc krtaylor)

15 years

11.11 MMWG Technical Requirements?

by Kurt Taylor

Hi everyone, I was looking at the TSC planning schedule and wondering where we are with requirements for multimedia: https://wiki.linaro.org/Cycles/1111/Schedule Are we tracking this elsewhere? If not, I went ahead and created a requirements wiki page here: https://wiki.linaro.org/Cycles/1111/TechnicalTopics/Multimedia For reference, here is a great example on the power management page: https://wiki.linaro.org/Cycles/1111/TechnicalTopics/PowerManagement We need to fill this out with ideas and get this going quickly. Comments? Regards, Kurt Taylor (irc krtaylor)

15 years

about android aac encoder

by Kan Hu

Hi, all I'm a engineer from Linaro, currently work on the aac encoder. We plan to extract aac encoder from android and make it a library. You can find it on git://git.linaro.org/people/sariohu/voaacenc.git. I know your team have done similar work on opencore-amr. I'm wondering if you also can maintain aac encoder from android? Thanks.

15 years, 1 month

Totem/GStreamer CPU wakes

by Kurt Taylor

For general information and discussion: Just to be complete, I have finished a test run using totem to play long files to see GStreamer in use and it's demand on the system CPU. I tried several different files, including wav and mp3s. As it turns out, totem only has about 5 wps while playing both wav and mp3 files, so I am not hopeful in finding optimization in that code path to reduce the wakes. My environment is a Panda running maverick netbook, with alsa 1.0.24 and the latest pulseaudio git head. I am using Powertop as root with the pid and time options to get the results. regards, Kurt Taylor (irc krtaylor)

15 years, 1 month

linaro aac encoder optimization

by Kan Hu

Hi, All, I would like to discuss about the next step of aac encoder optimization for linaro. Current situation is , 1. ffmpeg aac encoder is in bad shape and poor performance and encoding quality. 2. libfaac has license issue for release. 3. Android aac encoder is better for the performance and encoding quality, but it's Apache licensed. Here's some options for me of the next steps for aac encoder optimization 1. Continue on ffmpeg aac encoder, but more effort is needed to a acceptable level. 2. Reuse Android aac encoder. Since it is Apache licensed. We need write a wrapper to use it in ffmpeg or write a gstreamer plugin to use Android encoder. Any suggestions?

15 years, 2 months

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linaro-multimedia