//
//  PRTCAudioAACConfiguration.h
//
//  Created by super on 2021/8/17.
//  Copyright © 2021 RongCloud. All rights reserved.
//

#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

/*!
 音频码率 (默认96Kbps)
 */
typedef NS_ENUM (NSUInteger, RCAudioBitRate) {
    RCAudioBitRate_32Kbps  = 32000,                          /// 32Kbps 音频码率
    RCAudioBitRate_64Kbps  = 64000,                          /// 64Kbps 音频码率
    RCAudioBitRate_96Kbps  = 96000,                          /// 96Kbps 音频码率
    RCAudioBitRate_128Kbps = 128000,                         /// 128Kbps 音频码率
    RCAudioBitRate_Default = RCAudioBitRate_96Kbps           /// 默认音频码率，默认为 96Kbps
};

/*!
 音频采样率 (默认44.1KHz)
 */
typedef NS_ENUM (NSUInteger, RCAudioSampleRate){
    RCAudioSampleRate_16000Hz = 16000,                       /// 16KHz 采样率
    RCAudioSampleRate_44100Hz = 44100,                       /// 44.1KHz 采样率
    RCAudioSampleRate_48000Hz = 48000,                       /// 48KHz 采样率
    RCAudioSampleRate_Default = RCAudioSampleRate_44100Hz    /// 默认音频采样率，默认为 44.1KHz
};

/*!
 Audio Live quality（音频质量）
 */
typedef NS_ENUM (NSUInteger, RCAudioQuality){
    RCAudioQuality_Low      = 0,                             /// 低音频质量 audio sample rate: 16KHz audio bitrate: numberOfChannels 1 : 32Kbps  2 : 64Kbps
    RCAudioQuality_Medium   = 1,                             /// 中音频质量 audio sample rate: 44.1KHz audio bitrate: 96Kbps
    RCAudioQuality_High     = 2,                             /// 高音频质量 audio sample rate: 44.1MHz audio bitrate: 128Kbps
    RCAudioQuality_VeryHigh = 3,                             /// 超高音频质量 audio sample rate: 48KHz, audio bitrate: 128Kbps
    RCAudioQuality_Default  = RCAudioQuality_High            /// 默认音频质量 audio sample rate: 44.1KHz, audio bitrate: 96Kbps
};


@interface PRTCAudioAACConfiguration : NSObject
<
NSCoding,
NSCopying
>

/*!
 默认音频单双声道配置
 */
+ (instancetype)defaultOneChannelsConfiguration;
+ (instancetype)defaultDoubleChannelsConfiguration;

/*!
 音频配置
 */
+ (instancetype)defaultConfigurationForQuality:(RCAudioQuality)audioQuality;

#pragma mark - Attribute
///=============================================================================
/// @name Attribute
///=============================================================================

/*!
 声道数目(default 2)
 */
@property (nonatomic, assign) NSUInteger numberOfChannels;

/*!
 采样率
 */
@property (nonatomic, assign) RCAudioSampleRate audioSampleRate;

/*!
 码率
 */
@property (nonatomic, assign) RCAudioBitRate audioBitrate;

/*!
 flv编码音频头 44100 为0x12 0x10
 */
@property (nonatomic, assign, readonly) char *asc;

/*!
 缓存区长度
 */
@property (nonatomic, assign,readonly) NSUInteger bufferLength;

@end

NS_ASSUME_NONNULL_END