2 Copyright (C) 2006-2007 Paul Davis
4 This program is free software; you can redistribute it and/or modify it
5 under the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2 of the License, or (at your option)
9 This program is distributed in the hope that it will be useful, but WITHOUT
10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License along
15 with this program; if not, write to the Free Software Foundation, Inc.,
16 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include "ardour/audio_buffer.h"
22 #include "pbd/error.h"
23 #include "pbd/malign.h"
28 using namespace ARDOUR;
30 AudioBuffer::AudioBuffer(size_t capacity)
31 : Buffer (DataType::AUDIO)
36 _owns_data = true; // prevent resize() from gagging
38 _silent = false; // force silence on the intial buffer state
43 AudioBuffer::~AudioBuffer()
46 cache_aligned_free(_data);
50 AudioBuffer::resize (size_t size)
53 /* XXX how the hell is this enforced? */
58 if (_data && size < _capacity) {
59 /* buffer is already large enough */
63 cache_aligned_free (_data);
65 cache_aligned_malloc ((void**) &_data, sizeof (Sample) * size);
72 AudioBuffer::check_silence (pframes_t nframes, pframes_t& n) const
74 for (n = 0; n < nframes; ++n) {
75 if (_data[n] != Sample (0)) {
83 AudioBuffer::silence (samplecnt_t len, samplecnt_t offset) {
86 assert(_capacity > 0);
87 assert(offset + len <= _capacity);
88 memset(_data + offset, 0, sizeof (Sample) * len);
89 if (len == _capacity) {