AEBufferStack.h

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//
//  AEBufferStack.h
//  TheAmazingAudioEngine
//
//  Created by Michael Tyson on 23/03/2016.
//  Copyright © 2016 A Tasty Pixel. All rights reserved.
//
//  This software is provided 'as-is', without any express or implied
//  warranty.  In no event will the authors be held liable for any damages
//  arising from the use of this software.
//
//  Permission is granted to anyone to use this software for any purpose,
//  including commercial applications, and to alter it and redistribute it
//  freely, subject to the following restrictions:
//
//  1. The origin of this software must not be misrepresented; you must not
//     claim that you wrote the original software. If you use this software
//     in a product, an acknowledgment in the product documentation would be
//     appreciated but is not required.
//
//  2. Altered source versions must be plainly marked as such, and must not be
//     misrepresented as being the original software.
//
//  3. This notice may not be removed or altered from any source distribution.
//

#ifdef __cplusplus
extern "C" {
#endif

#import <Foundation/Foundation.h>
#import <AudioToolbox/AudioToolbox.h>
#import "AETypes.h"

extern const UInt32 AEBufferStackMaxFramesPerSlice;

typedef struct AEBufferStack AEBufferStack;

AEBufferStack * AEBufferStackNew(int poolSize);

AEBufferStack * AEBufferStackNewWithOptions(int poolSize, int maxChannelsPerBuffer, int numberOfSingleChannelBuffers);

void AEBufferStackFree(AEBufferStack * stack);

void AEBufferStackSetFrameCount(AEBufferStack * stack, UInt32 frameCount);

UInt32 AEBufferStackGetFrameCount(const AEBufferStack * stack);

void AEBufferStackSetTimeStamp(AEBufferStack * stack, const AudioTimeStamp * timestamp);

const AudioTimeStamp * AEBufferStackGetTimeStamp(const AEBufferStack * stack);

int AEBufferStackGetPoolSize(const AEBufferStack * stack);

int AEBufferStackGetMaximumChannelsPerBuffer(const AEBufferStack * stack);

int AEBufferStackCount(const AEBufferStack * stack);

const AudioBufferList * AEBufferStackGet(const AEBufferStack * stack, int index);

const AudioBufferList * AEBufferStackPush(AEBufferStack * stack, int count);

const AudioBufferList * AEBufferStackPushWithChannels(AEBufferStack * stack, int count, int channelCount);

const AudioBufferList * AEBufferStackPushExternal(AEBufferStack * stack, const AudioBufferList * buffer);
    
const AudioBufferList * AEBufferStackDuplicate(AEBufferStack * stack);

void AEBufferStackSwap(AEBufferStack * stack);

void AEBufferStackPop(AEBufferStack * stack, int count);

void AEBufferStackRemove(AEBufferStack * stack, int index);

const AudioBufferList * AEBufferStackMix(AEBufferStack * stack, int count);

const AudioBufferList * AEBufferStackMixWithGain(AEBufferStack * stack, int count, const float * gains);

void AEBufferStackApplyFaders(AEBufferStack * stack,
                              float targetVolume, float * currentVolume,
                              float targetBalance, float * currentBalance);

void AEBufferStackSilence(AEBufferStack * stack);

void AEBufferStackMixToBufferList(AEBufferStack * stack, int bufferCount, const AudioBufferList * output);

void AEBufferStackMixToBufferListChannels(AEBufferStack * stack,
                                          int bufferCount,
                                          AEChannelSet channels,
                                          const AudioBufferList * output);

AudioTimeStamp * AEBufferStackGetTimeStampForBuffer(AEBufferStack * stack, int index);

void AEBufferStackReset(AEBufferStack * stack);
#ifdef __cplusplus
}
#endif