audioinit录音与播放

// // InMemoryAudioFile.h // test // // Created by wutong on 15/11/10. // Copyright © 2015年 wutong. All rights reserved. // #ifndef InMemoryAudioFile_h #define InMemoryAudioFile_h // // InMemoryAudioFile.h // HelloWorld // // Created by Aran Mulholland on 22/02/09. // Copyright 2009 Aran Mulholland. All rights reserved. // #import <Foundation/Foundation.h> #import <AudioToolbox/AudioFile.h> #include <sys/time.h> @interface InMemoryAudioFile : NSObject { AudioStreamBasicDescription mDataFormat; AudioFileID mAudioFile; UInt32 bufferByteSize; SInt64 mCurrentPacket; UInt32 mNumPacketsToRead; AudioStreamPacketDescription *mPacketDescs; SInt64 packetCount; UInt32 *audioData; SInt64 packetIndex; } //opens a wav file -(OSStatus)open:(NSString *)filePath; //gets the infor about a wav file, stores it locally -(OSStatus)getFileInfo; //gets the next packet from the buffer, returns -1 if we have reached the end of the buffer -(UInt32)getNextPacket; //gets the current index (where we are up to in the buffer) -(SInt64)getIndex; //reset the index to the start of the file -(void)reset; @end #endif /* InMemoryAudioFile_h */