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Diffstat (limited to 'src/libs/engine/AudioBuffer.cpp')
-rw-r--r-- | src/libs/engine/AudioBuffer.cpp | 299 |
1 files changed, 0 insertions, 299 deletions
diff --git a/src/libs/engine/AudioBuffer.cpp b/src/libs/engine/AudioBuffer.cpp deleted file mode 100644 index 098103c0..00000000 --- a/src/libs/engine/AudioBuffer.cpp +++ /dev/null @@ -1,299 +0,0 @@ -/* 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 - */ - -#include <iostream> -#include <cassert> -#include <stdlib.h> -#include "AudioBuffer.hpp" - -using namespace std; - -/* TODO: Be sure these functions are vectorized by GCC when it's vectorizer - * stops sucking. Probably a good idea to inline them as well */ - -namespace Ingen { - - -AudioBuffer::AudioBuffer(size_t size) - : Buffer((size == 1) ? DataType::CONTROL : DataType::AUDIO, size) - , _data(NULL) - , _local_data(NULL) - , _size(size) - , _filled_size(0) - , _state(OK) - , _set_value(0) - , _set_time(0) -{ - assert(_size > 0); - allocate(); - assert(data()); -} - - -void -AudioBuffer::resize(size_t size) -{ - _size = size; - - Sample* const old_data = _data; - - const bool using_local_data = (_data == _local_data); - - deallocate(); - - const int ret = posix_memalign((void**)&_local_data, 16, _size * sizeof(Sample)); - if (ret != 0) { - cerr << "[Buffer] Failed to allocate buffer. Aborting." << endl; - exit(EXIT_FAILURE); - } - - assert(ret == 0); - assert(_local_data); - - if (using_local_data) - _data = _local_data; - else - _data = old_data; - - set_block(0, 0, _size-1); -} - - -/** Allocate and use a locally managed buffer (data). - */ -void -AudioBuffer::allocate() -{ - assert(!_joined_buf); - assert(_local_data == NULL); - assert(_size > 0); - - const int ret = posix_memalign((void**)&_local_data, 16, _size * sizeof(Sample)); - if (ret != 0) { - cerr << "[Buffer] Failed to allocate buffer. Aborting." << endl; - exit(EXIT_FAILURE); - } - - assert(ret == 0); - assert(_local_data); - - _data = _local_data; - - set_block(0, 0, _size-1); -} - - -/** Free locally allocated buffer. - */ -void -AudioBuffer::deallocate() -{ - assert(!_joined_buf); - free(_local_data); - _local_data = NULL; - _data = NULL; -} - - -/** Empty (ie zero) the buffer. - */ -void -AudioBuffer::clear() -{ - set_block(0, 0, _size-1); - _state = OK; - _filled_size = 0; -} - - -/** Set value of buffer to @a val after @a start_sample. - * - * The Buffer will handle setting the intial portion of the buffer to the - * value on the next cycle automatically (if @a start_sample is > 0), as - * long as pre_process() is called every cycle. - */ -void -AudioBuffer::set_value(Sample val, FrameTime cycle_start, FrameTime time) -{ - if (_size == 1) - time = cycle_start; - - FrameTime offset = time - cycle_start; - assert(offset <= _size); - - if (offset < _size) { - set_block(val, offset, _size - 1); - - if (offset > 0) - _state = HALF_SET_CYCLE_1; - } // else trigger at very end of block - - _set_time = time; - _set_value = val; -} - - -/** Set a block of buffer to @a val. - * - * @a start_sample and @a end_sample define the inclusive range to be set. - */ -void -AudioBuffer::set_block(Sample val, size_t start_offset, size_t end_offset) -{ - assert(end_offset >= start_offset); - assert(end_offset < _size); - - Sample* const buf = data(); - assert(buf); - - for (size_t i = start_offset; i <= end_offset; ++i) - buf[i] = val; -} - - -/** Scale a block of buffer by @a val. - * - * @a start_sample and @a end_sample define the inclusive range to be set. - */ -void -AudioBuffer::scale(Sample val, size_t start_sample, size_t end_sample) -{ - assert(end_sample >= start_sample); - assert(end_sample < _size); - - Sample* const buf = data(); - assert(buf); - - for (size_t i=start_sample; i <= end_sample; ++i) - buf[i] *= val; -} - - -/** Copy a block of @a src into buffer. - * - * @a start_sample and @a end_sample define the inclusive range to be set. - * This function only copies the same range in one buffer to another. - */ -void -AudioBuffer::copy(const Buffer* src, size_t start_sample, size_t end_sample) -{ - assert(end_sample >= start_sample); - assert(end_sample < _size); - assert(src); - assert(src->type() == DataType::CONTROL || DataType::AUDIO); - - Sample* const buf = data(); - assert(buf); - - const Sample* const src_buf = ((AudioBuffer*)src)->data(); - assert(src_buf); - - for (size_t i=start_sample; i <= end_sample; ++i) - buf[i] = src_buf[i]; -} - - -/** Accumulate a block of @a src into @a dst. - * - * @a start_sample and @a end_sample define the inclusive range to be accumulated. - * This function only adds the same range in one buffer to another. - */ -void -AudioBuffer::accumulate(const AudioBuffer* const src, size_t start_sample, size_t end_sample) -{ - assert(end_sample >= start_sample); - assert(end_sample < _size); - assert(src); - - Sample* const buf = data(); - assert(buf); - - const Sample* const src_buf = src->data(); - assert(src_buf); - - for (size_t i=start_sample; i <= end_sample; ++i) - buf[i] += src_buf[i]; - -} - - -/** Use another buffer's data instead of the local one. - * - * This buffer will essentially be identical to @a buf after this call. - */ -bool -AudioBuffer::join(Buffer* buf) -{ - AudioBuffer* abuf = dynamic_cast<AudioBuffer*>(buf); - if (!abuf) - return false; - - assert(abuf->size() >= _size); - - _joined_buf = abuf; - _filled_size = abuf->filled_size(); - - assert(_filled_size <= _size); - - return true; -} - - -void -AudioBuffer::unjoin() -{ - _joined_buf = NULL; - _data = _local_data; -} - - -void -AudioBuffer::prepare_read(FrameTime start, SampleCount nframes) -{ - // FIXME: nframes parameter doesn't actually work, - // writing starts from 0 every time - assert(_size == 1 || nframes == _size); - - switch (_state) { - case HALF_SET_CYCLE_1: - if (start > _set_time) - _state = HALF_SET_CYCLE_2; - break; - case HALF_SET_CYCLE_2: - set_block(_set_value, 0, _size-1); - _state = OK; - break; - default: - break; - } -} - - -/** Set the buffer (data) used. - * - * This is only to be used by Drivers (to provide zero-copy processing). - */ -void -AudioBuffer::set_data(Sample* buf) -{ - assert(buf); - assert(!_joined_buf); - _data = buf; -} - - -} // namespace Ingen |