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livetrax/libs/ardour/thread_buffers.cc

125 lines
3.6 KiB
C++

/*
* Copyright (C) 2010-2012 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2010-2017 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2013-2017 Robin Gareus <robin@gareus.org>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <iostream>
#include <algorithm>
#include "ardour/audioengine.h"
#include "ardour/buffer_set.h"
#include "ardour/thread_buffers.h"
using namespace ARDOUR;
using namespace std;
ThreadBuffers::ThreadBuffers ()
: silent_buffers (new BufferSet)
, scratch_buffers (new BufferSet)
, noinplace_buffers (new BufferSet)
, route_buffers (new BufferSet)
, mix_buffers (new BufferSet)
, gain_automation_buffer (0)
, trim_automation_buffer (0)
, send_gain_automation_buffer (0)
, scratch_automation_buffer (0)
, pan_automation_buffer (0)
, npan_buffers (0)
{
}
void
ThreadBuffers::ensure_buffers (ChanCount howmany, size_t custom)
{
// std::cerr << "ThreadBuffers " << this << " resize buffers with count = " << howmany << std::endl;
/* this is all protected by the process lock in the Session
*/
/* we always need at least 1 midi buffer */
if (howmany.n_midi() < 1) {
howmany.set_midi(1);
}
if (howmany.n_audio() == 0 && howmany.n_midi() == 1) {
return;
}
AudioEngine* _engine = AudioEngine::instance ();
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
size_t count = std::max (scratch_buffers->available().get(*t), howmany.get(*t));
size_t size;
if (custom > 0) {
size = custom;
} else {
size = (*t == DataType::MIDI)
? _engine->raw_buffer_size (*t)
: _engine->raw_buffer_size (*t) / sizeof (Sample);
}
scratch_buffers->ensure_buffers (*t, count, size);
noinplace_buffers->ensure_buffers (*t, count, size);
mix_buffers->ensure_buffers (*t, count, size);
silent_buffers->ensure_buffers (*t, count, size);
route_buffers->ensure_buffers (*t, count, size);
}
size_t audio_buffer_size = custom > 0 ? custom : _engine->raw_buffer_size (DataType::AUDIO) / sizeof (Sample);
delete [] gain_automation_buffer;
gain_automation_buffer = new gain_t[audio_buffer_size];
delete [] trim_automation_buffer;
trim_automation_buffer = new gain_t[audio_buffer_size];
delete [] send_gain_automation_buffer;
send_gain_automation_buffer = new gain_t[audio_buffer_size];
delete [] scratch_automation_buffer;
scratch_automation_buffer = new gain_t[audio_buffer_size];
allocate_pan_automation_buffers (audio_buffer_size, howmany.n_audio(), false);
}
void
ThreadBuffers::allocate_pan_automation_buffers (samplecnt_t nframes, uint32_t howmany, bool force)
{
/* we always need at least 2 pan buffers */
howmany = max (2U, howmany);
if (!force && howmany <= npan_buffers) {
return;
}
if (pan_automation_buffer) {
for (uint32_t i = 0; i < npan_buffers; ++i) {
delete [] pan_automation_buffer[i];
}
delete [] pan_automation_buffer;
}
pan_automation_buffer = new pan_t*[howmany];
for (uint32_t i = 0; i < howmany; ++i) {
pan_automation_buffer[i] = new pan_t[nframes];
}
npan_buffers = howmany;
}