In order to be able to test the master clock. For now, the master clock is only
driven by the audio output with a valid time_get.
This module doesn't have any latency, the first returned delay is 0.
RFC: Maybe it should belong to a test audio output.
This callback is not mandatory. If it is NULL, the core will wait for the delay
returned by time_get(). This was already the case for most aout plugins:
PulseAudio, coreaudio, Android, DirectSound, Wasapi, and Jack.
Audio outputs don't need the channel mask for S/PDIF or HDMI passthrough.
This will be convenient for Dolby Atmos that can have a higher channel count
that can't be mapped.
Re-license almost all the playback modules to LGPLv2.1+ with
authorization from their respective contributors (230+)
This includes:
- access, codec, packetizers, demux
- audio filters, audio mixers, audio output
- video filters, video chroma, video output
- text renderers
- XML parser
- ARM NEON and SSE2 optimisations (mostly for chromas and filters)
Some modules are not concerned:
- BDA and DShow access modules because Manol Manolov is AWOL
- Real RTSP, because it is derived from Xine
- x264 and t140 because they are encoders only
- DLL Loader, because it is derived from MPlayer
- DTS packetizer, because Jon Lech Johansen is AWOL
- Shine and WMAfixed, because they are derived from Rockbox
- Real demuxer, as it is derived from MPlayer and Wang Bo is AWOL
- MPC demuxer, as Yavor Doganov is AWOL
- Tivo demuxer, because it is derived from an MPlayer fork
- Playlist demuxer, (WPL and ZPL parts missing), because suheaven is AWOL
- iOS audio output and video display, because author refuses the license change
- Equalizer and compressor, because Ronald Wright is AWOL
- Mono, Headphone and Dolby, because author refuses the license change
- hqdn3d and yadif, because they are from MPlayer/libavfilter
- remoteosd, because it derives from RealVNC code
- MMX optimisations, because Ollie Lho, from SiS, is AWOL
- Rotate, because it depends on GPL motion
Nota Bene:
- Some modules depend on GPL-only libraries, a LGPL module does not mean
that the resulting binary module will be LGPL.
Libraries affected would include liba52, libdvdcss, libdvdnav, libdvdread,
faad2, libdca, libmad, libmpeg2, libpostproc, SRC, sid, zvbi and probably others.
This would enable the input manager to hold an audio output plugin at
all times. Then it would be possible to keep track of output devices,
volume, policy and (JACK) routing continuously. For this to work,
outputs will need to be patched so that device selection and volume
handling works even when playing back.
Note though that this commit only introduces the change in the
audio_output_t interface; it does not implement the features above.
The time report callback could only be called from pf_play() so this is
cleaner and less prone to coding mistake.
Also pass the relative drift instead of the absolute play time stamp.
The drift is less subject to scheduling noise, i.e. drift evolves much
slower than current time advances.
Thomas Guillem