forked from bartvdbraak/blender
113 lines
2.6 KiB
C++
113 lines
2.6 KiB
C++
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* Copyright 2009-2011 Jörg Hermann Müller
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*
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* This file is part of AudaSpace.
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*
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* Audaspace is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* AudaSpace 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Audaspace; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file audaspace/intern/AUD_Mixer.h
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* \ingroup audaspaceintern
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*/
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#ifndef __AUD_MIXER_H__
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#define __AUD_MIXER_H__
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#include "AUD_ConverterFunctions.h"
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#include "AUD_Buffer.h"
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class AUD_IReader;
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#include <boost/shared_ptr.hpp>
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/**
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* This abstract class is able to mix audiosignals with same channel count
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* and sample rate and convert it to a specific output format.
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*/
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class AUD_Mixer
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{
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protected:
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/**
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* The output specification.
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*/
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AUD_DeviceSpecs m_specs;
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/**
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* The length of the mixing buffer.
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*/
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int m_length;
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/**
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* The mixing buffer.
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*/
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AUD_Buffer m_buffer;
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/**
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* Converter function.
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*/
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AUD_convert_f m_convert;
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public:
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/**
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* Creates the mixer.
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*/
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AUD_Mixer(AUD_DeviceSpecs specs);
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/**
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* Destroys the mixer.
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*/
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virtual ~AUD_Mixer() {}
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/**
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* Returns the target specification for superposing.
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* \return The target specification.
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*/
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AUD_DeviceSpecs getSpecs() const;
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/**
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* Sets the target specification for superposing.
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* \param specs The target specification.
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*/
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void setSpecs(AUD_Specs specs);
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/**
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* Mixes a buffer.
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* \param buffer The buffer to superpose.
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* \param start The start sample of the buffer.
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* \param length The length of the buffer in samples.
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* \param volume The mixing volume. Must be a value between 0.0 and 1.0.
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*/
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void mix(sample_t* buffer, int start, int length, float volume);
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/**
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* Writes the mixing buffer into an output buffer.
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* \param buffer The target buffer for superposing.
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* \param volume The mixing volume. Must be a value between 0.0 and 1.0.
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*/
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void read(data_t* buffer, float volume);
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/**
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* Clears the mixing buffer.
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* \param length The length of the buffer in samples.
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*/
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void clear(int length);
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};
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#endif //__AUD_MIXER_H__
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