781dd5edb5
All these files were removed since accidental commit, revert and merge in 2.8.ea31f0ac3b+0a4e170c28+11f9a23a28+7b27b10fa6
152 lines
4.0 KiB
C++
152 lines
4.0 KiB
C++
/*******************************************************************************
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* Copyright 2009-2016 Jörg Müller
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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******************************************************************************/
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#pragma once
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/**
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* @file ChannelMapperReader.h
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* @ingroup respec
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* The ChannelMapperReader class.
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*/
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#include "fx/EffectReader.h"
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#include "util/Buffer.h"
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AUD_NAMESPACE_BEGIN
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/**
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* This class maps a sound source's channels to a specific output channel count.
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* \note The input sample format must be float.
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*/
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class AUD_API ChannelMapperReader : public EffectReader
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{
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private:
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/**
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* The sound reading buffer.
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*/
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Buffer m_buffer;
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/**
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* The output specification.
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*/
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Channels m_target_channels;
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/**
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* The channel count of the reader.
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*/
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Channels m_source_channels;
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/**
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* The mapping specification.
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*/
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float* m_mapping;
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/**
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* The size of the mapping.
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*/
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int m_map_size;
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/**
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* The mono source angle.
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*/
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float m_mono_angle;
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static const Channel MONO_MAP[];
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static const Channel STEREO_MAP[];
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static const Channel STEREO_LFE_MAP[];
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static const Channel SURROUND4_MAP[];
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static const Channel SURROUND5_MAP[];
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static const Channel SURROUND51_MAP[];
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static const Channel SURROUND61_MAP[];
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static const Channel SURROUND71_MAP[];
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static const Channel* CHANNEL_MAPS[];
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static const float MONO_ANGLES[];
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static const float STEREO_ANGLES[];
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static const float STEREO_LFE_ANGLES[];
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static const float SURROUND4_ANGLES[];
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static const float SURROUND5_ANGLES[];
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static const float SURROUND51_ANGLES[];
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static const float SURROUND61_ANGLES[];
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static const float SURROUND71_ANGLES[];
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static const float* CHANNEL_ANGLES[];
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// delete copy constructor and operator=
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ChannelMapperReader(const ChannelMapperReader&) = delete;
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ChannelMapperReader& operator=(const ChannelMapperReader&) = delete;
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/**
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* Calculates the mapping matrix.
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*/
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void AUD_LOCAL calculateMapping();
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/**
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* Calculates the distance between two angles.
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*/
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float AUD_LOCAL angleDistance(float alpha, float beta);
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public:
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/**
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* Creates a channel mapper reader.
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* \param reader The reader to map.
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* \param channels The target channel count this reader should map to.
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*/
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ChannelMapperReader(std::shared_ptr<IReader> reader, Channels channels);
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/**
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* Destroys the reader.
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*/
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~ChannelMapperReader();
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/**
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* Returns the channel configuration of the source reader.
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* @return The channel configuration of the reader.
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*/
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Channels getSourceChannels() const;
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/**
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* Returns the target channel configuration.
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* Equals getSpecs().channels.
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* @return The target channel configuration.
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*/
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Channels getChannels() const;
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/**
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* Sets the requested channel output count.
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* \param channels The channel output count.
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*/
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void setChannels(Channels channels);
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/**
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* Returns the mapping of the source channel to the target channel.
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* @param source The number of the source channel. Should be in the range [0, source channels).
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* @param target The number of the target channel. Should be in the range [0, target channels).
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* @return The mapping value which should be between 0.0 and 1.0. If source or target are out of range, NaN is returned.
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*/
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float getMapping(int source, int target);
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/**
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* Sets the angle for mono sources.
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* \param angle The angle for mono sources.
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*/
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void setMonoAngle(float angle);
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virtual Specs getSpecs() const;
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virtual void read(int& length, bool& eos, sample_t* buffer);
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};
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AUD_NAMESPACE_END
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