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author | David Robillard <d@drobilla.net> | 2008-09-30 16:50:21 +0000 |
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committer | David Robillard <d@drobilla.net> | 2008-09-30 16:50:21 +0000 |
commit | 93850c202de8b073a1ce1dd8bd246d407bce4e2f (patch) | |
tree | 6910b135bf4eff12de1af116cef73f6e9c107cd0 /src/engine/AudioBuffer.hpp | |
parent | a8bf5272d096de73507d2eab47f282c345f4ca8a (diff) | |
download | ingen-93850c202de8b073a1ce1dd8bd246d407bce4e2f.tar.gz ingen-93850c202de8b073a1ce1dd8bd246d407bce4e2f.tar.bz2 ingen-93850c202de8b073a1ce1dd8bd246d407bce4e2f.zip |
Flatten ingen source directory heirarchy a bit.
git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@1551 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/engine/AudioBuffer.hpp')
-rw-r--r-- | src/engine/AudioBuffer.hpp | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/engine/AudioBuffer.hpp b/src/engine/AudioBuffer.hpp new file mode 100644 index 00000000..513c188f --- /dev/null +++ b/src/engine/AudioBuffer.hpp @@ -0,0 +1,84 @@ +/* This file is part of Ingen. + * Copyright (C) 2007 Dave Robillard <http://drobilla.net> + * + * Ingen 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. + * + * Ingen 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 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 St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AUDIOBUFFER_H +#define AUDIOBUFFER_H + +#include <cstddef> +#include <cassert> +#include <boost/utility.hpp> +#include "types.hpp" +#include "Buffer.hpp" + +namespace Ingen { + + +class AudioBuffer : public Buffer +{ +public: + AudioBuffer(size_t capacity); + + void clear(); + void set_value(Sample val, FrameTime cycle_start, FrameTime time); + void set_block(Sample val, size_t start_offset, size_t end_offset); + void scale(Sample val, size_t start_sample, size_t end_sample); + void copy(const Buffer* src, size_t start_sample, size_t end_sample); + void accumulate(const AudioBuffer* src, size_t start_sample, size_t end_sample); + + bool join(Buffer* buf); + void unjoin(); + + /** For driver use only!! */ + void set_data(Sample* data); + + inline const void* raw_data() const { return _data; } + inline void* raw_data() { return _data; } + + inline Sample* data() const { return _data; } + + inline Sample& value_at(size_t offset) const + { assert(offset < _size); return data()[offset]; } + + void prepare_read(FrameTime start, SampleCount nframes); + void prepare_write(FrameTime start, SampleCount nframes) {} + + void rewind() const {} + void resize(size_t size); + + void filled_size(size_t size) { _filled_size = size; } + size_t filled_size() const { return _filled_size; } + size_t size() const { return _size; } + +private: + enum State { OK, HALF_SET_CYCLE_1, HALF_SET_CYCLE_2 }; + + void allocate(); + void deallocate(); + + Sample* _data; ///< Used data pointer (probably same as _local_data) + Sample* _local_data; ///< Locally allocated buffer (possibly unused if joined or set_data used) + size_t _size; ///< Allocated buffer size + size_t _filled_size; ///< Usable buffer size (for MIDI ports etc) + State _state; ///< State of buffer for setting values next cycle + Sample _set_value; ///< Value set by @ref set (may need to be set next cycle) + FrameTime _set_time; ///< Time _set_value was set (to reset next cycle) +}; + + +} // namespace Ingen + +#endif // AUDIOBUFFER_H |