| 初始化 |
- (nullable instancetype)initWithURL:(NSURL *)url settings:(NSDictionary<NSString *, id> *)settings error:(NSError **)outError; |
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- (nullable instancetype)initWithURL:(NSURL *)url format:(AVAudioFormat *)format error:(NSError **)outError API_AVAILABLE(macos(10.12), ios(10.0), watchos(4.0)) API_UNAVAILABLE(tvos); |
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| 控制和配置 |
- (BOOL)prepareToRecord; |
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- (BOOL)record; |
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- (BOOL)recordAtTime:(NSTimeInterval)time API_AVAILABLE(macos(10.9), ios(6.0), watchos(4.0)) API_UNAVAILABLE(tvos); |
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- (BOOL)recordForDuration:(NSTimeInterval) duration; |
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(BOOL)recordAtTime:(NSTimeInterval)time forDuration:(NSTimeInterval) duration API_AVAILABLE(macos(10.9), ios(6.0), watchos(4.0)) API_UNAVAILABLE(tvos); |
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- (void)pause; |
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- (void)stop; |
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- (BOOL)deleteRecording; |
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delegate |
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| 信息(状态)管理 |
recording |
|
|
url |
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channelAssignments |
硬件通道的集合，是个数组 |
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currentTime |
从开始录到现在的时间，单位是秒 |
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deviceCurrentTime |
设备当前时间The time, in seconds, of the host device where the audio recorder is located. |
|
settings |
配置信息 |
|
format |
缓冲区音频格式 |
| 音频电平表 |
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meteringEnabled |
开关 |
|
updateMeters |
刷新recorder所有通道的均值和峰值,获取峰值或均值前，需要调这个方法 |
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peakPowerForChannel |
相应通道的峰值 |
|
averagePowerForChannel |
相应通道的均值 |
| 设置 |
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|
General Audio Format Settings |
由AVAudioPlayer和AVAudioRecorder处理 |
|
Encoder Settings |
recorder的配置项 |
|
AVEncoderBitRateStrategyKey Values |
上一项中的策略里的具体 |
|
AVSampleRateConverterAlgorithmKey |
采样转化算法 |
