/* 1.纯播放器 2.纯录音器 3.即播又录器 4.即播又录，还即时合成,并支持声道 5.支持暂停 6.支持分路控制音量，麦克风音量，伴奏音量 7.支持切换左右声道，立体声输出 8.支持声效模式：回音，正常，变调，并即时保存 9.检查文件格式 10.支持定时 11.监测音量 12.对伴奏的音量调节记录进文件 */ #import #import #import // for vdsp functions #import "lame.h" #define NUM_FILES 1 // number of audio files read in by old method #define kDelayBufferLength 1024 * 100 // measured in slices - a couple seconds worth at 44.1k #define MP3_SIZE 8192 // Data structure for mono or stereo sound, to pass to the application's render callback function, // which gets invoked by a Mixer unit input bus when it needs more audio to play. // Note: this is used by the callbacks for playing looped files (old way) typedef struct { UInt32 writeNumber; BOOL isStereo; // set to true if there is data in the audioDataRight member UInt32 frameCount; // the total number of frames in the audio data UInt32 sampleNumber; // the next audio sample to play float sampleRate; AudioUnitSampleType *audioDataLeft; // the complete left (or mono) channel of audio data read from an audio file AudioUnitSampleType *audioDataRight; // the complete right channel of audio data read from an audio file ExtAudioFileRef audioFile; } soundStruct, *soundStructPtr; @interface MixerHostAudio : NSObject { BOOL isPlayer; //开启播放器 BOOL isRecorder; //开启录音器 BOOL isGenerator;//开启产生器 BOOL isOutputer; //开启录音保存 BOOL isEffecter; //开启效果器 BOOL isMixSave; //开启混音保存 BOOL isPaused; //是否暂停 BOOL isPlayMic; //回放录音 BOOL isHeadset; //接上耳塞 BOOL isIPad1; //是否ipad1 NSString* importAudioFile; //播放文件 NSString* outputAudioFile; //输出文件 int outputChanelIndex;//输出声道 float volumeRecorder; //输入音量 float volumePlayer; //输出音量 NSTimeInterval currentTime; //当前时间 NSTimeInterval timeLenRecord; //录音时长 UInt32 recordSamples; //录音总sample FILE * _mp3; lame_t lame; unsigned char _mp3_buffer[MP3_SIZE]; ExtAudioFileRef audioFile; Float64 graphSampleRate; // audio graph sample rate CFURLRef sourceURLArray[NUM_FILES]; // for handling loop files soundStruct soundStructArray[NUM_FILES]; // scope reference for loop file callback //float _oldVolPlayer; //float _oldVolRecorder; // Before using an AudioStreamBasicDescription struct you must initialize it to 0. However, because these ASBDs // are declared in external storage, they are automatically initialized to 0. AudioStreamBasicDescription stereoStreamFormat; // standard stereo 8.24 fixed point AudioStreamBasicDescription monoStreamFormat; // standard mono 8.24 fixed point AudioStreamBasicDescription SInt16StreamFormat; // signed 16 bit int sample format AudioStreamBasicDescription floatStreamFormat; // float sample format (for testing) AudioStreamBasicDescription auEffectStreamFormat; // audio unit Effect format AudioStreamBasicDescription stereoFileFormat; // standard stereo 8.24 fixed point AudioStreamBasicDescription monoFileFormat; // standard mono 8.24 fixed point AUGraph processingGraph; // the main audio graph BOOL playing; // indicates audiograph is running BOOL interruptedDuringPlayback; // indicates interruption happened while audiograph running // some of the audio units in this app AudioUnit ioUnit; // remote io unit AudioUnit mixerUnit; // multichannel mixer audio unit AUNode iONode; // node for I/O unit speaker AUNode mixerNode; // node for Multichannel Mixer unit FFTSetup fftSetup; // fft predefined structure required by vdsp fft functions COMPLEX_SPLIT fftA; // complex variable for fft int fftLog2n; // base 2 log of fft size int fftN; // fft size int fftNOver2; // half fft size size_t fftBufferCapacity; // fft buffer size (in samples) size_t fftIndex; // read index pointer in fft buffer // working buffers for sample data void *dataBuffer; // input buffer from mic/line float *outputBuffer; // fft conversion buffer float *analysisBuffer; // fft analysis buffer SInt16 *conversion16BufferLeft; // for data conversion from fixed point to integer SInt16 *conversion16BufferRight; // for data conversion from fixed point to integer SInt32 *conversion32BufferLeft; // for data conversion from fixed point to integer SInt32 *conversion32BufferRight; // for data conversion from fixed point to integer // convolution float *filterBuffer; // impusle response buffer int filterLength; // length of filterBuffer float *signalBuffer; // signal buffer int signalLength; // signal length float *resultBuffer; // result buffer int resultLength; // result length // new instance variables for UI display objects int displayInputFrequency; // frequency determined by analysis float displayInputLevelLeft; // average input level for meter left channel float displayInputLevelRight; // average input level for meter right channel int displayNumberOfInputChannels; // number of input channels detected on startup // for the synth callback - these are now instance variables so we can pass em back and forth to mic callback using self for inrefcon float sinFreq; // frequency of sine wave to generate float sinPhase; // current phase BOOL synthNoteOn; // determines whether note is playing // mic FX type selection int micFxType; // enumerated fx types: // 0: ring mod // 1: fft // 2: pitch shift // 3: echo (delay) // 4: low pass filter (moving average) // 5: low pass filter (convolution) BOOL micFxOn; // toggle for using mic fx float micFxControl; // multipurpose mix fx control slider BOOL inputDeviceIsAvailable; // indicates whether input device is available on ipod touch } // property declarations - corresponding to instance variables declared above @property(assign) BOOL isPlayer; //开启播放器 @property(assign) BOOL isRecorder; //开启录音器 @property(assign) BOOL isGenerator;//开启混音器 @property(assign) BOOL isOutputer; //开启录音保存 @property(assign) BOOL isEffecter; //开启效果器 @property(assign) BOOL isMixSave; //开启混音保存 @property(assign) BOOL isPlayMic; //回放录音 @property(assign) BOOL isPaused; //是否暂停 @property(assign) BOOL isHeadset; //接上耳塞 @property(assign) BOOL isHeadsetTrue;//接上耳塞 @property(assign) BOOL isIPad1; //是否ipad1 @property(assign) BOOL isIOS5; //是否IOS5.x @property(assign) BOOL isIOS6; //是否IOS6.x @property(assign) BOOL isErroring;//是否发生错误 @property(assign) BOOL isOutputMp3;//是否压缩成mp3 @property(assign) BOOL isReadFileToMemory;//是否读文件至内存 @property(assign) int outputChanelIndex;//输出声道 @property(assign) ExtAudioFileRef audioFile; //保存的音频文件接口 @property(assign) NSTimeInterval currentTime; //当前时间 @property(assign) NSTimeInterval timeLenRecord; //录音时长 @property(assign) UInt32 recordSamples; //录音总sample @property (nonatomic,assign) id delegate;//父对象 @property(nonatomic,retain,setter=setImportAudioFile:, getter=importAudioFile) NSString* importAudioFile; //播放文件 @property(nonatomic,retain,setter=setOutputAudioFile:, getter=outputAudioFile) NSString* outputAudioFile; //输出文件 @property(assign,setter=setVolumeRecorder:, getter=volumeRecorder) float volumeRecorder; //输入音量 @property(assign,setter=setVolumePlayer:, getter=volumePlayer)float volumePlayer; //输出音量 @property (readwrite) AudioStreamBasicDescription stereoStreamFormat; @property (readwrite) AudioStreamBasicDescription monoStreamFormat; @property (readwrite) AudioStreamBasicDescription SInt16StreamFormat; @property (readwrite) AudioStreamBasicDescription floatStreamFormat; @property (readwrite) AudioStreamBasicDescription auEffectStreamFormat; @property (readwrite) Float64 graphSampleRate; @property (getter = isPlaying) BOOL playing; @property BOOL interruptedDuringPlayback; @property AudioUnit mixerUnit; @property AudioUnit ioUnit; @property AUNode iONode; @property AUNode mixerNode; @property FFTSetup fftSetup; @property COMPLEX_SPLIT fftA; @property int fftLog2n; @property int fftN; @property int fftNOver2; @property void *dataBuffer; @property float *outputBuffer; @property float *analysisBuffer; @property SInt16 *conversion16BufferLeft; @property SInt16 *conversion16BufferRight; @property SInt32 *conversion32BufferLeft; @property SInt32 *conversion32BufferRight; @property float *filterBuffer; // filter buffer @property int filterLength; // filter length @property float *signalBuffer; // signal buffer @property int signalLength; // signal length @property float *resultBuffer; // signal buffer @property int resultLength; // signal length @property size_t fftBufferCapacity; @property size_t fftIndex; @property (assign) int displayInputFrequency; @property (assign) float displayInputLevelLeft; @property (assign) float displayInputLevelRight; @property (assign) int displayNumberOfInputChannels; @property float sinFreq; @property float sinPhase; @property BOOL synthNoteOn; @property int micFxType; @property BOOL micFxOn; @property float micFxControl; @property BOOL inputDeviceIsAvailable; // function (method) declarations - (void) obtainSoundFileURLs; - (void) setupAudioSession; - (void) setupStereoStreamFormat; - (void) setupMonoStreamFormat; - (void) setupSInt16StreamFormat; - (void) setupFloatStreamFormat; - (void) setupStereoFileFormat; - (void) setupMonoFileFormat; - (void) setup; - (void) initBuffer; - (void) readAudioFilesIntoMemory; - (void) configureAndInitializeAudioProcessingGraph; - (void) setupAudioProcessingGraph; - (void) connectAudioProcessingGraph; - (void) start; - (void) start:(SInt64)n; - (BOOL) stop; - (void) pause; - (void) play; - (void) seek:(NSTimeInterval)n; - (BOOL) getHeadsetMode; - (void) delete; - (void) playSynthNote; - (void) stopSynthNote; - (void) enableMixerInput: (UInt32) inputBus isOn: (AudioUnitParameterValue) isONValue; - (void) setMixerInput: (UInt32) inputBus gain: (AudioUnitParameterValue) inputGain; - (void) setMixerOutputGain: (AudioUnitParameterValue) outputGain; - (void) setMixerFx: (AudioUnitParameterValue) isOnValue; - (void) setMixerBus5Fx: (AudioUnitParameterValue) isOnValue; - (void) printASBD: (AudioStreamBasicDescription) asbd; - (void) printErrorMessage: (NSString *) errorString withStatus: (OSStatus) result; - (void) convolutionSetup; - (void) FFTSetup; - (void) initDelayBuffer; - (Float32) getMixerOutputLevel; - (soundStructPtr) getSoundArray:(int)index; - (void)writeAudioFile:(int)totalFrames; - (BOOL) writeMp3Buffer:(void*)buffer_l nSamples:(int)nSamples; - (void) closeMp3File; - (void) createMp3File; @end