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413 lines
8.9 KiB
413 lines
8.9 KiB
/*
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Copyright (C) 2002 Hans Meine
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hans_meine@gmx.net
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "datahandle.h"
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#include "../../mcop/debug.h"
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namespace GSL {
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void DataHandle::copyFrom(const DataHandle &other)
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{
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handle_ = other.handle_;
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if(handle_)
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gsl_data_handle_ref(handle_);
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}
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DataHandle::DataHandle(GslDataHandle *handle)
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: handle_(handle)
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{
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}
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DataHandle::DataHandle(const DataHandle &other) { copyFrom(other); }
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DataHandle &DataHandle::operator =(const DataHandle &other)
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{
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if(!( other == *this )) {
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if(handle_)
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gsl_data_handle_unref(handle_);
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copyFrom(other);
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}
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return *this;
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}
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bool DataHandle::operator ==(const DataHandle &other) const
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{
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return handle_ == other.handle_;
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}
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bool DataHandle::isNull() const
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{
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return handle_ == 0;
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}
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DataHandle::~DataHandle()
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{
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if(handle_)
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gsl_data_handle_unref(handle_);
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}
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gint DataHandle::open()
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{
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arts_return_val_if_fail(handle_ != 0, -1);
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arts_debug("open()ing datahandle (open_count before: %d)..",
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handle_->open_count);
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return gsl_data_handle_open(handle_);
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}
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void DataHandle::close()
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{
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arts_return_if_fail(handle_ != 0);
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arts_debug("close()ing datahandle (open_count before: %d)..",
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handle_->open_count);
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gsl_data_handle_close(handle_);
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}
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bool DataHandle::isOpen() const
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{
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if(!handle_)
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return false;
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return handle_->open_count != 0;
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}
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GslLong DataHandle::read(GslLong valueOffset, GslLong valueCount, gfloat *values)
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{
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arts_return_val_if_fail(handle_ != 0, 0);
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return gsl_data_handle_read(handle_, valueOffset, valueCount, values);
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}
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DataHandle DataHandle::createCropped(GslLong headCutValueCount,
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GslLong tailCutValueCount)
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{
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arts_return_val_if_fail(handle_ != 0, null());
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return DataHandle(gsl_data_handle_new_crop(handle_,
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headCutValueCount, tailCutValueCount));
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}
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DataHandle DataHandle::createCut(GslLong cutOffset,
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GslLong cutValueCount)
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{
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arts_return_val_if_fail(handle_ != 0, null());
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return DataHandle(gsl_data_handle_new_cut(handle_, cutOffset,
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cutValueCount));
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}
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DataHandle DataHandle::createReversed()
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{
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arts_return_val_if_fail(handle_ != 0, null());
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return DataHandle(gsl_data_handle_new_reverse(handle_));
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}
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GslDataCache *DataHandle::createGslDataCache()
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{
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arts_debug("wanna have cache with padding %d for each of %d channels..",
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gsl_get_config()->wave_chunk_padding,
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channelCount());
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return gsl_data_cache_from_dhandle(handle_,
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gsl_get_config()->wave_chunk_padding *
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channelCount());
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}
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GslLong DataHandle::valueCount() const
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{
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arts_return_val_if_fail(handle_ != 0, 0);
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arts_return_val_if_fail(isOpen(), 0);
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return handle_->setup.n_values;
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}
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guint DataHandle::channelCount() const
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{
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arts_return_val_if_fail(handle_ != 0, 0);
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arts_return_val_if_fail(isOpen(), 0);
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return handle_->setup.n_channels;
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}
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guint DataHandle::bitDepth() const
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{
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arts_return_val_if_fail(handle_ != 0, 0);
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arts_return_val_if_fail(isOpen(), 0);
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return handle_->setup.bit_depth;
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}
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// ----------------------------------------------------------------------------
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WaveChunkDescription::WaveChunkDescription(const GslWaveDsc *parent, guint index)
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: parent_(parent), parentIndex_(index)
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{
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if(index>parent->n_chunks)
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{
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arts_debug("wrong index given to WaveChunkDescription constructor, "
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"using 0 instead..");
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parentIndex_ = 0;
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}
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}
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float WaveChunkDescription::oscillatorFrequency()
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{
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return parent_->chunks[parentIndex_].osc_freq;
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}
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float WaveChunkDescription::mixerFrequency()
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{
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return parent_->chunks[parentIndex_].mix_freq;
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}
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GslWaveLoopType WaveChunkDescription::loopType()
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{
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return parent_->chunks[parentIndex_].loop_type;
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}
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GslLong WaveChunkDescription::loopStart()
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{
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return parent_->chunks[parentIndex_].loop_start;
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}
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GslLong WaveChunkDescription::loopEnd()
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{
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return parent_->chunks[parentIndex_].loop_end;
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}
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guint WaveChunkDescription::loopCount()
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{
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return parent_->chunks[parentIndex_].loop_count;
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}
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WaveDataHandle WaveChunkDescription::createDataHandle()
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{
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return WaveDataHandle(parent_, parentIndex_);
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}
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// ----------------------------------------------------------------------------
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/**
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* We use GslWaveFileInfos' refcounting - probably this lazy
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* construction happens only once, where the object is used. After
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* copying it would have to be constructed again, but that's not
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* likely to happen. (?)
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*/
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void WaveDescription::ensurePointer() const
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{
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if(!desc_)
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desc_ = gsl_wave_dsc_load(parentInfo_, parentIndex_, &error_);
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}
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void WaveDescription::copyFrom(const WaveDescription &other)
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{
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parentInfo_ = other.parentInfo_;
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parentIndex_ = other.parentIndex_;
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gsl_wave_file_info_ref(other.parentInfo_);
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}
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// internal, private
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WaveDescription::WaveDescription(GslWaveFileInfo *parent, guint index,
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const std::string &name)
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: parentInfo_(parent), name_(name), parentIndex_(index),
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desc_(0), error_(GSL_ERROR_NONE)
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{
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gsl_wave_file_info_ref(parentInfo_);
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}
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WaveDescription::~WaveDescription()
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{
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if(desc_)
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gsl_wave_dsc_free(desc_);
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gsl_wave_file_info_unref(parentInfo_);
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}
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WaveDescription::WaveDescription(const WaveDescription &other)
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: desc_(0), error_(GSL_ERROR_NONE)
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{
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copyFrom(other);
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}
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WaveDescription &WaveDescription::operator =(const WaveDescription &other)
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{
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if(desc_)
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gsl_wave_dsc_free(desc_);
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gsl_wave_file_info_unref(parentInfo_);
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copyFrom(other);
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return *this;
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}
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const std::string &WaveDescription::name() const
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{
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return name_;
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}
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GslErrorType WaveDescription::error() const
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{
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ensurePointer();
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return error_;
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}
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guint WaveDescription::chunkCount() const
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{
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ensurePointer();
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return desc_ ? desc_->n_chunks : 0;
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}
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WaveChunkDescription WaveDescription::chunkDescription(guint index) const
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{
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ensurePointer();
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return WaveChunkDescription(desc_, index);
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}
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guint WaveDescription::channelCount() const
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{
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ensurePointer();
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return desc_ ? desc_->n_channels : 0;
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}
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// ----------------------------------------------------------------------------
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void WaveFileInfo::copyFrom(const WaveFileInfo &other)
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{
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info_ = other.info_;
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filename_ = other.filename_;
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if(info_)
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gsl_wave_file_info_ref(info_);
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error_ = other.error_;
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}
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WaveFileInfo::WaveFileInfo(const std::string &filename)
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: info_(0), error_(GSL_ERROR_NONE), filename_(filename)
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{
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info_ = gsl_wave_file_info_load(filename.c_str(), &error_);
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}
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WaveFileInfo::~WaveFileInfo()
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{
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if(info_)
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gsl_wave_file_info_unref(info_);
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}
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WaveFileInfo::WaveFileInfo(const WaveFileInfo &other)
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{
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copyFrom(other);
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}
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WaveFileInfo &WaveFileInfo::operator =(const WaveFileInfo &other)
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{
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if(info_)
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gsl_wave_file_info_unref(info_);
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copyFrom(other);
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return *this;
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}
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guint WaveFileInfo::waveCount() const
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{
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return info_ ? info_->n_waves : 0;
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}
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std::string WaveFileInfo::waveName(guint index) const
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{
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if(index >= waveCount())
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return "";
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return info_->waves[index].name;
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}
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WaveDescription WaveFileInfo::waveDescription(guint index)
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{
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return WaveDescription(info_, index, waveName(index));
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}
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GslErrorType WaveFileInfo::error() const
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{
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return error_;
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}
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// ----------------------------------------------------------------------------
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WaveDataHandle::WaveDataHandle()
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: DataHandle(NULL),
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oscillatorFrequency_(0),
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mixerFrequency_(0)
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{
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}
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WaveDataHandle::WaveDataHandle(const GslWaveDsc *waveDesc, guint chunkIndex)
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: DataHandle(NULL),
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oscillatorFrequency_(0),
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mixerFrequency_(0)
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{
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handle_ = gsl_wave_handle_create(const_cast<GslWaveDsc *>(waveDesc),
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chunkIndex, &error_);
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if(error() == GSL_ERROR_NONE)
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{
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oscillatorFrequency_ = waveDesc->chunks[chunkIndex].osc_freq;
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mixerFrequency_ = waveDesc->chunks[chunkIndex].mix_freq;
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}
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}
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WaveDataHandle::WaveDataHandle(const std::string& filename,
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guint waveIndex,
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guint chunkIndex)
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: DataHandle(NULL),
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oscillatorFrequency_(0),
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mixerFrequency_(0)
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{
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GSL::WaveFileInfo info(filename);
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error_ = info.error();
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if(!info.error())
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{
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GSL::WaveDescription desc= info.waveDescription(waveIndex);
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error_ = desc.error();
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if(!desc.error() && (desc.chunkCount() > chunkIndex))
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{
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GSL::WaveChunkDescription chunkDesc= desc.chunkDescription(chunkIndex);
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(*this) = chunkDesc.createDataHandle();
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}
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}
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}
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GslErrorType WaveDataHandle::error() const
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{
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return error_;
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}
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float WaveDataHandle::oscillatorFrequency() const
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{
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return oscillatorFrequency_;
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}
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float WaveDataHandle::mixerFrequency() const
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{
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return mixerFrequency_;
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}
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}
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