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Diffstat (limited to 'extern/audaspace/include/generator/SquareReader.h')
-rw-r--r-- | extern/audaspace/include/generator/SquareReader.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/extern/audaspace/include/generator/SquareReader.h b/extern/audaspace/include/generator/SquareReader.h new file mode 100644 index 00000000000..53fc574c767 --- /dev/null +++ b/extern/audaspace/include/generator/SquareReader.h @@ -0,0 +1,86 @@ +/******************************************************************************* + * 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 SquareReader.h + * @ingroup generator + * The SquareReader class. + */ + +#include "IReader.h" + +AUD_NAMESPACE_BEGIN + +/** + * This class is used for square 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 SquareReader : 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= + SquareReader(const SquareReader&) = delete; + SquareReader& operator=(const SquareReader&) = delete; + +public: + /** + * Creates a new reader. + * \param frequency The frequency of the sine wave. + * \param sampleRate The output sample rate. + */ + SquareReader(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 |