[vlc-devel] [RFC] SDL audio output
remi at remlab.net
Fri Jul 29 15:15:00 CEST 2011
I am summarily reviewing the audio output plug-ins.
The SDL_audio plug-in is rather simple and thus should not be hard to
maintain. Nevertheless it is totally lame as SDL is unable to provide any
kind of timing information. This means audio synchronization is impossible.
This raises the question of the usefulness of the plug-in.
Below is the list of back-ends. My conclusion is unsurprisingly that it
SDL_Audio is useless unless you have an antique Unix operating system
without OSS nor PulseAudio nor ALSA emulation. Thus I would suggest we
either remove the plug-in or disable it by default.
[fixed size font needed]
SDL name VLC name Description Verdict
alsa alsa Linux ALSA redundant
android --- Android JNI ?redundant
--- opensles Android OpenSL -
arts arts(*) KDE aRts obsolete
baudio --- BeOS BeAudio ?obsolete
bsd --- NetBSD/OpenBSD ?useless
disk file Raw file redundant
dma --- OSS (mmap) ?useless
dsp oss OSS (write) redundant
dummy dummy Dummy redundant
esd esd(*) GNOME EsoundD obsolete
fusionsound --- DirectFB useless wrapper
iphoneos --- iOS CoreAudio ?redundant
--- audioqueue iOS -
macosx auhal MacOS CoreAudio redundant
nas --- NAS obsolete
nds --- Nintendo DS useless stub
paudio --- AIX Paudio ?obsolete
pulseaudio pulse PulseAudio redundant
qsa --- QNX QSA ?useless
sun --- SunOS ?obsolete
ums --- AIX UMS ?obsolete
windib waveout Windows WaveOut redundant
windx5 directx Windows DirectX redundant
--- jack JACK -
--- portaudio PortAudio -
(*) removed from VLC already
* FusionSound/DirectFB itself wraps only OSS and ALSA.
* NDS is not actually implemented currently.
* QNX can mostly emulate ALSA so QSA is not indispensable.
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