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extern/audaspace/include/generator/TriangleReader.h
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| /******************************************************************************* | |||||
| * Copyright 2009-2016 Jörg Müller | |||||
| * | |||||
| * Licensed under the Apache License, Version 2.0 (the "License"); | |||||
| * you may not use this file except in compliance with the License. | |||||
| * You may obtain a copy of the License at | |||||
| * | |||||
| * http://www.apache.org/licenses/LICENSE-2.0 | |||||
| * | |||||
| * Unless required by applicable law or agreed to in writing, software | |||||
| * distributed under the License is distributed on an "AS IS" BASIS, | |||||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |||||
| * See the License for the specific language governing permissions and | |||||
| * limitations under the License. | |||||
| ******************************************************************************/ | |||||
| #pragma once | |||||
| /** | |||||
| * @file TriangleReader.h | |||||
| * @ingroup generator | |||||
| * The TriangleReader class. | |||||
| */ | |||||
| #include "IReader.h" | |||||
| AUD_NAMESPACE_BEGIN | |||||
| /** | |||||
| * This class is used for sawtooth tone playback. | |||||
| * The output format is in the 16 bit format and stereo, the sample rate can be | |||||
| * specified. | |||||
| * As the two channels both play the same the output could also be mono, but | |||||
| * in most cases this will result in having to resample for output, so stereo | |||||
| * sound is created directly. | |||||
| */ | |||||
| class AUD_API TriangleReader : public IReader | |||||
| { | |||||
| private: | |||||
| /** | |||||
| * The frequency of the sine wave. | |||||
| */ | |||||
| float m_frequency; | |||||
| /** | |||||
| * The current position in samples. | |||||
| */ | |||||
| int m_position; | |||||
| /** | |||||
| * The value of the current sample. | |||||
| */ | |||||
| float m_sample; | |||||
| /** | |||||
| * The sample rate for the output. | |||||
| */ | |||||
| const SampleRate m_sampleRate; | |||||
| // delete copy constructor and operator= | |||||
| TriangleReader(const TriangleReader&) = delete; | |||||
| TriangleReader& operator=(const TriangleReader&) = delete; | |||||
| public: | |||||
| /** | |||||
| * Creates a new reader. | |||||
| * \param frequency The frequency of the sine wave. | |||||
| * \param sampleRate The output sample rate. | |||||
| */ | |||||
| TriangleReader(float frequency, SampleRate sampleRate); | |||||
| /** | |||||
| * Sets the frequency of the wave. | |||||
| * @param frequency The new frequency in Hertz. | |||||
| */ | |||||
| void setFrequency(float frequency); | |||||
| virtual bool isSeekable() const; | |||||
| virtual void seek(int position); | |||||
| virtual int getLength() const; | |||||
| virtual int getPosition() const; | |||||
| virtual Specs getSpecs() const; | |||||
| virtual void read(int & length, bool &eos, sample_t* buffer); | |||||
| }; | |||||
| AUD_NAMESPACE_END | |||||