Mercurial > hg > svapp
annotate audioio/AudioJACKTarget.h @ 154:386b02c926bf
* Merge from one-fftdataserver-per-fftmodel branch. This bit of
reworking (which is not described very accurately by the title of
the branch) turns the MatrixFile object into something that either
reads or writes, but not both, and separates the FFT file cache
reader and writer implementations separately. This allows the
FFT data server to have a single thread owning writers and one reader
per "customer" thread, and for all locking to be vastly simplified
and concentrated in the data server alone (because none of the
classes it makes use of is used in more than one thread at a time).
The result is faster and more trustworthy code.
| author | Chris Cannam |
|---|---|
| date | Tue, 27 Jan 2009 13:25:10 +0000 |
| parents | 9fc4b256c283 |
| children |
| rev | line source |
|---|---|
| Chris@43 | 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ |
| Chris@43 | 2 |
| Chris@43 | 3 /* |
| Chris@43 | 4 Sonic Visualiser |
| Chris@43 | 5 An audio file viewer and annotation editor. |
| Chris@43 | 6 Centre for Digital Music, Queen Mary, University of London. |
| Chris@43 | 7 This file copyright 2006 Chris Cannam. |
| Chris@43 | 8 |
| Chris@43 | 9 This program is free software; you can redistribute it and/or |
| Chris@43 | 10 modify it under the terms of the GNU General Public License as |
| Chris@43 | 11 published by the Free Software Foundation; either version 2 of the |
| Chris@43 | 12 License, or (at your option) any later version. See the file |
| Chris@43 | 13 COPYING included with this distribution for more information. |
| Chris@43 | 14 */ |
| Chris@43 | 15 |
| Chris@43 | 16 #ifndef _AUDIO_JACK_TARGET_H_ |
| Chris@43 | 17 #define _AUDIO_JACK_TARGET_H_ |
| Chris@43 | 18 |
| Chris@43 | 19 #ifdef HAVE_JACK |
| Chris@43 | 20 |
| Chris@43 | 21 #include <jack/jack.h> |
| Chris@43 | 22 #include <vector> |
| Chris@43 | 23 |
| Chris@43 | 24 #include "AudioCallbackPlayTarget.h" |
| Chris@43 | 25 |
| Chris@43 | 26 #include <QMutex> |
| Chris@43 | 27 |
| Chris@43 | 28 class AudioCallbackPlaySource; |
| Chris@43 | 29 |
| Chris@43 | 30 class AudioJACKTarget : public AudioCallbackPlayTarget |
| Chris@43 | 31 { |
| Chris@43 | 32 Q_OBJECT |
| Chris@43 | 33 |
| Chris@43 | 34 public: |
| Chris@43 | 35 AudioJACKTarget(AudioCallbackPlaySource *source); |
| Chris@43 | 36 virtual ~AudioJACKTarget(); |
| Chris@43 | 37 |
| Chris@70 | 38 virtual void shutdown(); |
| Chris@70 | 39 |
| Chris@43 | 40 virtual bool isOK() const; |
| Chris@43 | 41 |
| Chris@91 | 42 virtual double getCurrentTime() const; |
| Chris@91 | 43 |
| Chris@43 | 44 public slots: |
| Chris@43 | 45 virtual void sourceModelReplaced(); |
| Chris@43 | 46 |
| Chris@43 | 47 protected: |
| Chris@43 | 48 int process(jack_nframes_t nframes); |
| Chris@43 | 49 int xrun(); |
| Chris@43 | 50 |
| Chris@43 | 51 static int processStatic(jack_nframes_t, void *); |
| Chris@43 | 52 static int xrunStatic(void *); |
| Chris@43 | 53 |
| Chris@43 | 54 jack_client_t *m_client; |
| Chris@43 | 55 std::vector<jack_port_t *> m_outputs; |
| Chris@43 | 56 jack_nframes_t m_bufferSize; |
| Chris@43 | 57 jack_nframes_t m_sampleRate; |
| Chris@43 | 58 QMutex m_mutex; |
| Chris@70 | 59 bool m_done; |
| Chris@43 | 60 }; |
| Chris@43 | 61 |
| Chris@43 | 62 #endif /* HAVE_JACK */ |
| Chris@43 | 63 |
| Chris@43 | 64 #endif |
| Chris@43 | 65 |