Clone from the Lumiera Master-Repo (as Test for Forgejo)
https://git.lumiera.org/
29394345af
I think it's smart to rather use ALSA directly instead of PortAudio. ALSA is push AFAIK, and talking about it here at the hackspace, seems like the better choice. It's a bit lower level, but anyway everything speaks ALSA anyway. It's not like there's any reason to use PortAudio at all. It's just an extra abstraction. Coding for ALSA it'll also work with Pulseaudio and esd. Do people really use other sound systems than Pulseaudio, esd or plain ALSA? I can't think of it. I really the idea about building a small tool first. I'll do that. Also thought about making a small blikning cursor/text output, and syncing a BEEP-sound to that, so that I can test around with throwing in lots and lots of latency between "me" and the video, and try to sync it anyway. I should be able to read back from the sound card (or pulse audio underneath, it will just work with alsa as the abstraction) how long it takes for the bytes I'm pushing to reach the speakers, and do some buffer tuning on that. |
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Lumiera -- the video NLE for Linux ==================================== ************************************************************* Lumiera is a nonlinear video editing and compositing tool. It understands some of the common multimedia formats (quicktime, avi, ogg) and audio/video compression codecs (divx, xvid, mpeg1/2/4, ...) It features non-destructive editing, compositing tools, a selection of effects plugins, processing in RGB, YUV and RGB-float colormodels and the ability to mix media with differing sizes and framerates. More Informations at http://lumiera.org/[Lumiera.org] **************************************************************** Lumiera pre-Alpha Versions -------------------------- **This source tree doesn't yet contain a working video editing application** + Rather, it contains the framework and technology core of the envisioned Application ``Lumiera''. As of _7/2007_:: we start here with the backend and render engine modules together with some unit tests. You should find a wiki with detailed design considerations and developer documentation and a UML model (usable with BOUML 2.29) in the sibling directories. As of _2/2008_:: the project has been separated completely from his ancestor ``Cinelerra'' The Community, which is largely identical to the Cinelerra-CV community, choose the new project name ``Lumiera''. The basic project infrastructure is up and running, and work on the new codebase is going on continuosely. We can show nothing but a running test suite for some time to come. As of _1/2011_:: the project has created and documented a fairly consistent design, partially already coded up -- starting from the technical foundations and working up. The code base is approaching 100k LOC. Roughly half of this is testcode. The Application can be installed and started to bring up an GTK GUI outline, but the GUI is very preliminary and not connected to core functionality. The video processing pipeline is still not complete. See the http://issues.lumiera.org/roadmap[Project roadmap] Build Requirements ------------------ For building Lumiera, you'll need: - GNU C/C++ compiler (Version > 4.3) - Git Version management system - http://www.boost.org/[Boost libraries] - http://gmerlin.sourceforge.net/[GAVL library] - http://lumiera.org/nobug_manual.html[NoBug library] - GTK\-- - Cairo and Glade libraries - X libraries - http://scons.org[SCons] or Autotools build system See the online documentation at http://lumiera.org/Lumiera/NewbiesTutorials or the local Copy of this page in the file INSTALL Debian Package -------------- Hermann Vosseler (aka Ichthyo) maintains a *Debian* packaging of the source tree - the package definition can be pulled from +git://git.lumiera.org/lumiera/debian+ - the package can be built by +git-buildpackage+