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Diffstat (limited to 'libs/ardour/audio_buffer.cc')
-rw-r--r-- | libs/ardour/audio_buffer.cc | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/libs/ardour/audio_buffer.cc b/libs/ardour/audio_buffer.cc new file mode 100644 index 0000000000..059b61ed2f --- /dev/null +++ b/libs/ardour/audio_buffer.cc @@ -0,0 +1,56 @@ +/* + Copyright (C) 2006-2007 Paul Davis + + 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., + 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include <ardour/audio_buffer.h> + +#ifdef __x86_64__ +static const int CPU_CACHE_ALIGN = 64; +#else +static const int CPU_CACHE_ALIGN = 16; /* arguably 32 on most arches, but it matters less */ +#endif + +namespace ARDOUR { + + +AudioBuffer::AudioBuffer(size_t capacity) + : Buffer(DataType::AUDIO, capacity) + , _owns_data(false) + , _data(NULL) +{ + _size = capacity; // For audio buffers, size = capacity (always) + if (capacity > 0) { +#ifdef NO_POSIX_MEMALIGN + _data = (Sample *) malloc(sizeof(Sample) * capacity); +#else + posix_memalign((void**)&_data, CPU_CACHE_ALIGN, sizeof(Sample) * capacity); +#endif + assert(_data); + _owns_data = true; + clear(); + } +} + +AudioBuffer::~AudioBuffer() +{ + if (_owns_data) + free(_data); +} + + +} // namespace ARDOUR + |