2 Copyright (C) 2010 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include "ardour/buffer_manager.h"
22 #include "ardour/thread_buffers.h"
24 using namespace ARDOUR;
27 RingBufferNPT<ThreadBuffers*>* BufferManager::thread_buffers = 0;
28 std::list<ThreadBuffers*>* BufferManager::thread_buffers_list = 0;
29 Glib::StaticMutex BufferManager::rb_mutex = GLIBMM_STATIC_MUTEX_INIT;
32 BufferManager::init (uint32_t size)
34 thread_buffers = new ThreadBufferFIFO (size+1); // must be one larger than requested
35 thread_buffers_list = new ThreadBufferList;
37 /* and populate with actual ThreadBuffers
40 for (uint32_t n = 0; n < size; ++n) {
41 ThreadBuffers* ts = new ThreadBuffers;
42 thread_buffers->write (&ts, 1);
43 thread_buffers_list->push_back (ts);
48 BufferManager::get_thread_buffers ()
50 Glib::Mutex::Lock em (rb_mutex);
53 if (thread_buffers->read (&tbp, 1) == 1) {
61 BufferManager::put_thread_buffers (ThreadBuffers* tbp)
63 Glib::Mutex::Lock em (rb_mutex);
64 thread_buffers->write (&tbp, 1);
68 BufferManager::ensure_buffers (ChanCount howmany)
70 /* this is protected by the audioengine's process lock: we do not */
72 for (ThreadBufferList::iterator i = thread_buffers_list->begin(); i != thread_buffers_list_end(); ++i) {
73 (*i)->ensure_buffers (howmany);