Ajouts de musique et irrKlang.

SQCSim2021/external/irrKlang-1.6.0/include/ik_SAudioStreamFormat.h

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+// Copyright (C) 2002-2018 Nikolaus Gebhardt
+// This file is part of the "irrKlang" library.
+// For conditions of distribution and use, see copyright notice in irrKlang.h
+
+#ifndef __S_IRRKLANG_AUDIO_STREAM_FORMAT_H_INCLUDED__
+#define __S_IRRKLANG_AUDIO_STREAM_FORMAT_H_INCLUDED__
+
+#include "ik_IRefCounted.h"
+
+
+namespace irrklang
+{
+
+	//! audio sample data format enumeration for supported formats
+	enum ESampleFormat
+	{
+		//! one unsigned byte (0;255)
+		ESF_U8, 
+
+		//! 16 bit, signed (-32k;32k)
+		ESF_S16 
+	};
+
+
+	//! structure describing an audio stream format with helper functions
+	struct SAudioStreamFormat
+	{
+		//! channels, 1 for mono, 2 for stereo
+		ik_s32 ChannelCount; 
+
+		//! amount of frames in the sample data or stream. 
+		/** If the stream has an unknown lenght, this is -1 */
+		ik_s32 FrameCount;		
+
+		//! samples per second
+		ik_s32 SampleRate;
+		
+		//! format of the sample data
+		ESampleFormat SampleFormat;
+
+		//! returns the size of a sample of the data described by the stream data in bytes
+		inline ik_s32 getSampleSize() const
+		{
+			return (SampleFormat == ESF_U8) ? 1 : 2;
+		}
+
+		//! returns the frame size of the stream data in bytes
+		inline ik_s32 getFrameSize() const
+		{
+			return ChannelCount * getSampleSize();
+		}
+
+		//! returns the size of the sample data in bytes
+		/* Returns an invalid negative value when the stream has an unknown lenght */
+		inline ik_s32 getSampleDataSize() const
+		{
+			return getFrameSize() * FrameCount;
+		}
+
+		//! returns amount of bytes per second
+		inline ik_s32 getBytesPerSecond() const
+		{
+			return getFrameSize() * SampleRate;
+		}
+	};
+
+
+} // end namespace irrklang
+
+#endif
+