NvsCustomAudioFx.h

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//================================================================================
//
// (c) Copyright China Digital Video (Beijing) Limited, 2017. All rights reserved.
//
// This code and information is provided "as is" without warranty of any kind,
// either expressed or implied, including but not limited to the implied
// warranties of merchantability and/or fitness for a particular purpose.
//
//--------------------------------------------------------------------------------
//   Birth Date:    Jul 20. 2017
//   Author:        NewAuto video team
//================================================================================
#pragma once
 
#import <Foundation/Foundation.h>
#import "NvsCommonDef.h"
#import <CoreMedia/CMSampleBuffer.h>
 
struct NvsCustomAudioFxRenderContext {
    CMSampleBufferRef inputAudioSamples;  
    int64_t effectTime;                                 
    int64_t effectStartTime;                            
    int64_t effectEndTime;                              
};
 
typedef enum {
    NvsCustomAudioFxRenderError_NoError = 0,
    NvsCustomAudioFxRenderError_Unknown
} NvsCustomAudioFxRenderError;
 
@protocol NvsCustomAudioFxRenderer <NSObject>
 
- (void)didInit;
 
- (NvsAudioSampleFormat)didQuerySupportedInputAudioSampleFormat;
 
- (void)didCleanup;
 
- (NvsCustomAudioFxRenderError)didRender:(struct NvsCustomAudioFxRenderContext *)renderContext outputSamples:(CMSampleBufferRef*)outputSamplesBuffer;
 
- (NvsCustomAudioFxRenderError)didFlushWithOutputSample:(CMSampleBufferRef*)outputSamplesBuffer;
 
@end