//-----------------------------------------------------------------------------
// Project     : VST SDK
//
// Category    : Helpers
// Filename    : public.sdk/source/vst/vstspeakerarray,.h
// Created by  : Steinberg, 04/2015
// Description : Helper class representing speaker arrangement as array of speaker types.
//
//-----------------------------------------------------------------------------
// LICENSE
// (c) 2020, Steinberg Media Technologies GmbH, All Rights Reserved
//-----------------------------------------------------------------------------
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
// 
//   * Redistributions of source code must retain the above copyright notice, 
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation 
//     and/or other materials provided with the distribution.
//   * Neither the name of the Steinberg Media Technologies nor the names of its
//     contributors may be used to endorse or promote products derived from this 
//     software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
// IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
// OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE  OF THIS SOFTWARE, EVEN IF ADVISED
// OF THE POSSIBILITY OF SUCH DAMAGE.
//-----------------------------------------------------------------------------

#pragma once

#include "pluginterfaces/vst/vsttypes.h"
#include <cstdlib>

//------------------------------------------------------------------------
namespace Steinberg {
namespace Vst {

//------------------------------------------------------------------------
// SpeakerArray
/** Helper class representing speaker arrangement as array of speaker types.
*/
class SpeakerArray
{
public:
//------------------------------------------------------------------------
	SpeakerArray (SpeakerArrangement arr = 0) { setArrangement (arr); }

	enum
	{
		kMaxSpeakers = 64
	};

	typedef uint64 SpeakerType;

	int32 total () const { return count; }
	SpeakerType at (int32 index) const { return speaker[index]; }

	void setArrangement (SpeakerArrangement arr)
	{
		count = 0;
		memset (speaker, 0, sizeof (speaker));

		for (int32 i = 0; i < kMaxSpeakers; i++)
		{
			SpeakerType mask = 1ll << i;
			if (arr & mask)
				speaker[count++] = mask;
		}
	}

	SpeakerArrangement getArrangement () const
	{
		SpeakerArrangement arr = 0;
		for (int32 i = 0; i < count; i++)
			arr |= speaker[i];
		return arr;
	}

	int32 getSpeakerIndex (SpeakerType which) const
	{
		for (int32 i = 0; i < count; i++)
			if (speaker[i] == which)
				return i;
		return -1;
	}
//------------------------------------------------------------------------
protected:
	int32 count;
	SpeakerType speaker[kMaxSpeakers];
};

//------------------------------------------------------------------------
} // namespace Vst
} // namespace Steinberg
