1 files changed, 86 insertions, 0 deletions
diff --git a/extern/audaspace/include/generator/TriangleReader.h b/extern/audaspace/include/generator/TriangleReader.h
new file mode 100644
index 00000000000..15079404b75
--- /dev/null
+++ b/extern/audaspace/include/generator/TriangleReader.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 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