Until now, Mixer not only was responsible for rendering audio buffers
but also managed writing them to audio backend (through a FIFO) and
handled various quality related parameters.
All this functionality has been moved into the new AudioOutputContext
class. It glues together AudioBackend (formerly called AudioDevice),
global quality settings and the Mixer.
The AudioOutputContext class creates a FifoWriter which calls
Mixer::renderNextBuffer() and writes the output into the BufferFifo of
the AudioOutputContext it belongs to. The BufferFifo is read by the
according AudioBackend which belongs to the AudioOutputContext as well.
The AudioOutputContext also handles resampling in case the AudioBackend
wants the buffers in a different samplerate.
During this rewrite the Mixer class and the according source files have
been renamed from "mixer" to "Mixer". This results in small changes
all over LMMS' code base.
The mp3 decoder was using an uncomfortably large buffer,
laughably because of a negative overflow. Fixed this and
added a failsafe check to prevent buffer overflows.
Additionally changed printfs to qWarnings and fixed copyright
notice in audio_file_mp3.
* cleaned up code and improved coding style
* removed old SINGLE_SOURCE_COMPILE macro relicts
* use QString::toUtf8() instead of QString::toAscii() wherever possible
Refactor supported file extensions from AudioFileProcessor to
sampleBuffer, where the magic really happens. Change the hard-
coded MessageBox explaining supported formats to the real deal.
Also added modelines and switched spaces to tabs in the files
affected.
* coding style fixes
* removed obsolete save/restore of EOF-property in libsample rate data struct when resampling successively (always use 0)
git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@2039 0778d3d1-df1d-0410-868b-ea421aaaa00d
Tobias Doerffel