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/*
Copyright (C) 2002 Hans Meine
hans_meine@gmx.net
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include "datahandle.h"
#include "../../mcop/debug.h"
namespace GSL {
void DataHandle::copyFrom(const DataHandle &other)
{
handle_ = other.handle_;
if(handle_)
gsl_data_handle_ref(handle_);
}
DataHandle::DataHandle(GslDataHandle *handle)
: handle_(handle)
{
}
DataHandle::DataHandle(const DataHandle &other) { copyFrom(other); }
DataHandle &DataHandle::operator =(const DataHandle &other)
{
if(!( other == *this )) {
if(handle_)
gsl_data_handle_unref(handle_);
copyFrom(other);
}
return *this;
}
bool DataHandle::operator ==(const DataHandle &other) const
{
return handle_ == other.handle_;
}
bool DataHandle::isNull() const
{
return handle_ == 0;
}
DataHandle::~DataHandle()
{
if(handle_)
gsl_data_handle_unref(handle_);
}
gint DataHandle::open()
{
arts_return_val_if_fail(handle_ != 0, -1);
arts_debug("open()ing datahandle (open_count before: %d)..",
handle_->open_count);
return gsl_data_handle_open(handle_);
}
void DataHandle::close()
{
arts_return_if_fail(handle_ != 0);
arts_debug("close()ing datahandle (open_count before: %d)..",
handle_->open_count);
gsl_data_handle_close(handle_);
}
bool DataHandle::isOpen() const
{
if(!handle_)
return false;
return handle_->open_count != 0;
}
GslLong DataHandle::read(GslLong valueOffset, GslLong valueCount, gfloat *values)
{
arts_return_val_if_fail(handle_ != 0, 0);
return gsl_data_handle_read(handle_, valueOffset, valueCount, values);
}
DataHandle DataHandle::createCropped(GslLong headCutValueCount,
GslLong tailCutValueCount)
{
arts_return_val_if_fail(handle_ != 0, null());
return DataHandle(gsl_data_handle_new_crop(handle_,
headCutValueCount, tailCutValueCount));
}
DataHandle DataHandle::createCut(GslLong cutOffset,
GslLong cutValueCount)
{
arts_return_val_if_fail(handle_ != 0, null());
return DataHandle(gsl_data_handle_new_cut(handle_, cutOffset,
cutValueCount));
}
DataHandle DataHandle::createReversed()
{
arts_return_val_if_fail(handle_ != 0, null());
return DataHandle(gsl_data_handle_new_reverse(handle_));
}
GslDataCache *DataHandle::createGslDataCache()
{
arts_debug("wanna have cache with padding %d for each of %d channels..",
gsl_get_config()->wave_chunk_padding,
channelCount());
return gsl_data_cache_from_dhandle(handle_,
gsl_get_config()->wave_chunk_padding *
channelCount());
}
GslLong DataHandle::valueCount() const
{
arts_return_val_if_fail(handle_ != 0, 0);
arts_return_val_if_fail(isOpen(), 0);
return handle_->setup.n_values;
}
guint DataHandle::channelCount() const
{
arts_return_val_if_fail(handle_ != 0, 0);
arts_return_val_if_fail(isOpen(), 0);
return handle_->setup.n_channels;
}
guint DataHandle::bitDepth() const
{
arts_return_val_if_fail(handle_ != 0, 0);
arts_return_val_if_fail(isOpen(), 0);
return handle_->setup.bit_depth;
}
// ----------------------------------------------------------------------------
WaveChunkDescription::WaveChunkDescription(const GslWaveDsc *parent, guint index)
: parent_(parent), parentIndex_(index)
{
if(index>parent->n_chunks)
{
arts_debug("wrong index given to WaveChunkDescription constructor, "
"using 0 instead..");
parentIndex_ = 0;
}
}
float WaveChunkDescription::oscillatorFrequency()
{
return parent_->chunks[parentIndex_].osc_freq;
}
float WaveChunkDescription::mixerFrequency()
{
return parent_->chunks[parentIndex_].mix_freq;
}
GslWaveLoopType WaveChunkDescription::loopType()
{
return parent_->chunks[parentIndex_].loop_type;
}
GslLong WaveChunkDescription::loopStart()
{
return parent_->chunks[parentIndex_].loop_start;
}
GslLong WaveChunkDescription::loopEnd()
{
return parent_->chunks[parentIndex_].loop_end;
}
guint WaveChunkDescription::loopCount()
{
return parent_->chunks[parentIndex_].loop_count;
}
WaveDataHandle WaveChunkDescription::createDataHandle()
{
return WaveDataHandle(parent_, parentIndex_);
}
// ----------------------------------------------------------------------------
/**
* We use GslWaveFileInfos' refcounting - probably this lazy
* construction happens only once, where the object is used. After
* copying it would have to be constructed again, but that's not
* likely to happen. (?)
*/
void WaveDescription::ensurePointer() const
{
if(!desc_)
desc_ = gsl_wave_dsc_load(parentInfo_, parentIndex_, &error_);
}
void WaveDescription::copyFrom(const WaveDescription &other)
{
parentInfo_ = other.parentInfo_;
parentIndex_ = other.parentIndex_;
gsl_wave_file_info_ref(other.parentInfo_);
}
// internal, private
WaveDescription::WaveDescription(GslWaveFileInfo *parent, guint index,
const std::string &name)
: parentInfo_(parent), name_(name), parentIndex_(index),
desc_(0), error_(GSL_ERROR_NONE)
{
gsl_wave_file_info_ref(parentInfo_);
}
WaveDescription::~WaveDescription()
{
if(desc_)
gsl_wave_dsc_free(desc_);
gsl_wave_file_info_unref(parentInfo_);
}
WaveDescription::WaveDescription(const WaveDescription &other)
: desc_(0), error_(GSL_ERROR_NONE)
{
copyFrom(other);
}
WaveDescription &WaveDescription::operator =(const WaveDescription &other)
{
if(desc_)
gsl_wave_dsc_free(desc_);
gsl_wave_file_info_unref(parentInfo_);
copyFrom(other);
return *this;
}
const std::string &WaveDescription::name() const
{
return name_;
}
GslErrorType WaveDescription::error() const
{
ensurePointer();
return error_;
}
guint WaveDescription::chunkCount() const
{
ensurePointer();
return desc_ ? desc_->n_chunks : 0;
}
WaveChunkDescription WaveDescription::chunkDescription(guint index) const
{
ensurePointer();
return WaveChunkDescription(desc_, index);
}
guint WaveDescription::channelCount() const
{
ensurePointer();
return desc_ ? desc_->n_channels : 0;
}
// ----------------------------------------------------------------------------
void WaveFileInfo::copyFrom(const WaveFileInfo &other)
{
info_ = other.info_;
filename_ = other.filename_;
if(info_)
gsl_wave_file_info_ref(info_);
error_ = other.error_;
}
WaveFileInfo::WaveFileInfo(const std::string &filename)
: info_(0), error_(GSL_ERROR_NONE), filename_(filename)
{
info_ = gsl_wave_file_info_load(filename.c_str(), &error_);
}
WaveFileInfo::~WaveFileInfo()
{
if(info_)
gsl_wave_file_info_unref(info_);
}
WaveFileInfo::WaveFileInfo(const WaveFileInfo &other)
{
copyFrom(other);
}
WaveFileInfo &WaveFileInfo::operator =(const WaveFileInfo &other)
{
if(info_)
gsl_wave_file_info_unref(info_);
copyFrom(other);
return *this;
}
guint WaveFileInfo::waveCount() const
{
return info_ ? info_->n_waves : 0;
}
std::string WaveFileInfo::waveName(guint index) const
{
if(index >= waveCount())
return "";
return info_->waves[index].name;
}
WaveDescription WaveFileInfo::waveDescription(guint index)
{
return WaveDescription(info_, index, waveName(index));
}
GslErrorType WaveFileInfo::error() const
{
return error_;
}
// ----------------------------------------------------------------------------
WaveDataHandle::WaveDataHandle()
: DataHandle(NULL),
oscillatorFrequency_(0),
mixerFrequency_(0)
{
}
WaveDataHandle::WaveDataHandle(const GslWaveDsc *waveDesc, guint chunkIndex)
: DataHandle(NULL),
oscillatorFrequency_(0),
mixerFrequency_(0)
{
handle_ = gsl_wave_handle_create(const_cast<GslWaveDsc *>(waveDesc),
chunkIndex, &error_);
if(error() == GSL_ERROR_NONE)
{
oscillatorFrequency_ = waveDesc->chunks[chunkIndex].osc_freq;
mixerFrequency_ = waveDesc->chunks[chunkIndex].mix_freq;
}
}
WaveDataHandle::WaveDataHandle(const std::string& filename,
guint waveIndex,
guint chunkIndex)
: DataHandle(NULL),
oscillatorFrequency_(0),
mixerFrequency_(0)
{
GSL::WaveFileInfo info(filename);
error_ = info.error();
if(!info.error())
{
GSL::WaveDescription desc= info.waveDescription(waveIndex);
error_ = desc.error();
if(!desc.error() && (desc.chunkCount() > chunkIndex))
{
GSL::WaveChunkDescription chunkDesc= desc.chunkDescription(chunkIndex);
(*this) = chunkDesc.createDataHandle();
}
}
}
GslErrorType WaveDataHandle::error() const
{
return error_;
}
float WaveDataHandle::oscillatorFrequency() const
{
return oscillatorFrequency_;
}
float WaveDataHandle::mixerFrequency() const
{
return mixerFrequency_;
}
}
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