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Diffstat (limited to 'libs/ardour/ardour/audio_port.h')
-rw-r--r-- | libs/ardour/ardour/audio_port.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/libs/ardour/ardour/audio_port.h b/libs/ardour/ardour/audio_port.h new file mode 100644 index 0000000000..1eab294028 --- /dev/null +++ b/libs/ardour/ardour/audio_port.h @@ -0,0 +1,110 @@ +/* + Copyright (C) 2002 Paul Davis + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + $Id: port.h 712 2006-07-28 01:08:57Z drobilla $ +*/ + +#ifndef __ardour_audio_port_h__ +#define __ardour_audio_port_h__ + +#include <sigc++/signal.h> +#include <pbd/failed_constructor.h> +#include <ardour/ardour.h> +#include <jack/jack.h> +#include <ardour/port.h> +#include <ardour/buffer.h> + +namespace ARDOUR { + +class AudioEngine; + +class AudioPort : public Port { + public: + virtual ~AudioPort() { + free (_port); + } + + void cycle_start(jack_nframes_t nframes); + void cycle_end(); + + DataType type() const { return DataType(DataType::AUDIO); } + + Buffer& get_buffer () { + return _buffer; + } + + AudioBuffer& get_audio_buffer() { + return _buffer; + } + + void reset_overs () { + _short_overs = 0; + _long_overs = 0; + _overlen = 0; + } + + void reset_peak_meter () { + _peak = 0; + } + + void reset_meters () { + reset_peak_meter (); + reset_overs (); + } + + float peak_db() const { return _peak_db; } + jack_default_audio_sample_t peak() const { return _peak; } + + uint32_t short_overs () const { return _short_overs; } + uint32_t long_overs () const { return _long_overs; } + + static void set_short_over_length (jack_nframes_t); + static void set_long_over_length (jack_nframes_t); + + /** Assumes that the port is an audio output port */ + void silence (jack_nframes_t nframes, jack_nframes_t offset) { + if (!_silent) { + _buffer.clear(offset); + if (offset == 0 && nframes == _buffer.capacity()) { + _silent = true; + } + } + } + + protected: + friend class AudioEngine; + + AudioPort (jack_port_t *port); + void reset (); + + /* engine isn't supposed to access below here */ + + AudioBuffer _buffer; + + jack_nframes_t _overlen; + jack_default_audio_sample_t _peak; + float _peak_db; + uint32_t _short_overs; + uint32_t _long_overs; + + static jack_nframes_t _long_over_length; + static jack_nframes_t _short_over_length; +}; + +} // namespace ARDOUR + +#endif /* __ardour_audio_port_h__ */ |