85 lines
2.6 KiB
C++
85 lines
2.6 KiB
C++
/*
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* Copyright (C) 2010-2012 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2010 Carl Hetherington <carl@carlh.net>
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* Copyright (C) 2011-2012 David Robillard <d@drobilla.net>
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*
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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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*
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <iostream>
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#include "pbd/compose.h"
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#include "ardour/buffer_manager.h"
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#include "ardour/thread_buffers.h"
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using namespace ARDOUR;
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using namespace PBD;
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RingBufferNPT<ThreadBuffers*>* BufferManager::thread_buffers = 0;
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std::list<ThreadBuffers*>* BufferManager::thread_buffers_list = 0;
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Glib::Threads::Mutex BufferManager::rb_mutex;
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using std::cerr;
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using std::endl;
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void
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BufferManager::init (uint32_t size)
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{
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thread_buffers = new ThreadBufferFIFO (size + 1); // must be one larger than requested
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thread_buffers_list = new ThreadBufferList;
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/* and populate with actual ThreadBuffers */
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for (uint32_t n = 0; n < size; ++n) {
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ThreadBuffers* ts = new ThreadBuffers;
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thread_buffers->write (&ts, 1);
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thread_buffers_list->push_back (ts);
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}
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// cerr << "Initialized thread buffers, readable count now " << thread_buffers->read_space() << endl;
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}
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ThreadBuffers*
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BufferManager::get_thread_buffers ()
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{
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Glib::Threads::Mutex::Lock em (rb_mutex);
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ThreadBuffers* tbp;
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if (thread_buffers->read (&tbp, 1) == 1) {
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// cerr << "Got thread buffers, readable count now " << thread_buffers->read_space() << endl;
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return tbp;
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}
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return 0;
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}
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void
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BufferManager::put_thread_buffers (ThreadBuffers* tbp)
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{
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Glib::Threads::Mutex::Lock em (rb_mutex);
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thread_buffers->write (&tbp, 1);
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// cerr << "Put back thread buffers, readable count now " << thread_buffers->read_space() << endl;
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}
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void
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BufferManager::ensure_buffers (ChanCount howmany, size_t custom)
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{
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/* this is protected by the audioengine's process lock: we do not */
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for (ThreadBufferList::iterator i = thread_buffers_list->begin (); i != thread_buffers_list->end (); ++i) {
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(*i)->ensure_buffers (howmany, custom);
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}
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}
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