Just some words from my side. I really don't want to give any
recommendations to you, because I'm biased ;)
The NewSoundSourceAPI branch has gone through many iterations and Daniel
spent a LOT of time reviewing my code very thoroughly. He also provided the
key ideas to fix the MP3 decoding issues! During the last months the code
base has become pretty stable and we have not discovered any severe defects
lately. It is secured by new tests for many codecs and moreover the critical
parts of the code are guarded by lots of debug assertions that should
indicate potential issues or wrong assumptions early during development in
debug builds.
Of course, I would feel much safer if the new code had been tested by
experienced developers first before rushing it out to the public. On the
other hand, I personally never switched back to master without any regrets
after what I have found there!
Main features:
* API: Floating-point sample processing
* API: Explicit notion of #channels instead of implicitly assuming always stereo
* Update, optimization or even re-implementation (MP3, FLAC, AAC/M4A, ...)
of audio decoding
* Many metadata improvements (parsing, character encoding)
Open issues:
* Windows build with SoundSourceMediaFoundation
* OS X build with SoundSourceCoreAudio
Uwe
On 04/17/2015 09:25 AM, Daniel Schürmann wrote:
Hi Owen,
We have collected some test results, they are proving that the new sound
source branch is more reliable then the master solution.
We have no hints for the opposite.
So IMHO is worth to consider the 1.12 merge again.
Yes, master the sound source api has not changed since 1.11, but Mixxx
1.12 actually makes a difference since it use a lot of seeks when using
the new shiny
beat matching algorithms.
They simply fail with effected mp3 tracks. User may blame the syncing code
in the first place.
I hope we will get some results from Ryan Kramer before the desired beta
date.
We are still looking for a user that is able to test the Mac builds.
It would be nice, if we could provide build server builds for the sound
source branch. This would allow much more users to run a test.
Kind regards,
Daniel
2015-04-17 1:42 GMT+02:00 Owen Williams <owilli...@mixxx.org
<mailto:owilli...@mixxx.org>>:
On Thu, 2015-04-16 at 21:40 +0200, Daniel Schürmann wrote:
> Hi Owen,
>
> beta before May 16th should be possible.
>
> We have a remaining blocker, the mp3 off beat, click and distortion
issues.
The current mp3 and soundsource code is the same as in the current 1.11
release, so by definition it's not really a blocker since we already
have a release with that same code. Yes, it's a bug, but it shouldn't
block the beta or release. We've already discussed this issue.
> This and the fact that no on is working on a back port is a good hint
> that we should merge
> Uwes branch before beta.
That no one wants to work on a back port for the mp3 fixes is not an
argument in favor of a premature merge. I am happy to make the
soundsource review a priority after we do the release.
>
> The other issue that does not itches me but might be very bad for the
> Mixxx reputation at all, is
> https://bugs.launchpad.net/mixxx/+bug/1441046
> "Mixxx 1.12: library unusable slow spinning HD Win 8.1 notebook"
> IMHO this does no block the beta, but the release.
> Does anyone else experience this?
Since we are unable to reproduce this issue, it definitely shouldn't
block the beta. If anything we're more likely to get bug reports that
will help us identify the issue.
>
> It would be also nice if we can merge the pending fading and clicking
> issues in engine buffer.
> @Owen will you find time for decide over the pending questions?
These are low priority bugs and should not block beta.
The last blocker bugs we fixed were the issue with canceled library
scans breaking the library, and the soundtouch crash. That sort of
data-loss bug and party-crasher are what I mean by blockers.
The only other one I can think of is the issue with win64 builds
crashing on a lot of systems, but we might just have to tell people to
expect that problem and help us get feedback to fix it.
owen
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