76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
/*
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Copyright (C) 2014 Waves Audio Ltd.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "waves_audioport.h"
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#include "ardour/runtime_functions.h"
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#include "pbd/malign.h"
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using namespace ARDOUR;
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WavesAudioPort::WavesAudioPort (const std::string& port_name, PortFlags flags)
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: WavesDataPort (port_name, flags)
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{
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aligned_malloc ((void**)&_buffer, MAX_BUFFER_SIZE_BYTES, 32 /*32 byte alignment*/);
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memset (_buffer, 0, MAX_BUFFER_SIZE_BYTES);
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}
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WavesAudioPort::~WavesAudioPort ()
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{
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aligned_free (_buffer);
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}
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void* WavesAudioPort::get_buffer (pframes_t nframes)
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{
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if (is_input ()) {
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std::vector<WavesDataPort*>::const_iterator it = get_connections ().begin ();
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if (it != get_connections ().end ()) {
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/* In fact, the static casting to (const WavesAudioPort*) is not that safe.
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* However, mixing the buffers is assumed in the time critical conditions.
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* Base class WavesDataPort takes is supposed to provide enough consistentcy
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* of the connections.
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*/
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// get first buffer data
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// use optimized function to fill the buffer intialy
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ARDOUR::copy_vector (_buffer, ((const WavesAudioPort*)*it)->const_buffer (), nframes);
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++it;
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// mix the rest
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for (; it != get_connections ().end (); ++it) {
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Sample* tgt = buffer ();
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const Sample* src = ((const WavesAudioPort*)*it)->const_buffer ();
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// use otimized function to mix the buffers
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ARDOUR::mix_buffers_no_gain (tgt, src, nframes);
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}
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}
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}
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return _buffer;
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}
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void
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WavesAudioPort::_wipe_buffer()
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{
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memset (_buffer, 0, sizeof (_buffer));
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}
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