游戏中录音功能的实现

来源：互联网发布：ios10软件不受信任编辑：程序博客网时间：2024/06/05 05:37

正好这次游戏更新版本，有时间来把录音功能做一下，计划把之前游戏的录音功能移过来。

转自http://www.liveslives.com http://blog.csdn.net/huutu

Unity是自带录音功能的，介绍Unity录音功能的文章：

http://blog.csdn.net/huutu/article/details/20216613

但是这种录音的方式，文件太大，不适合在移动平台使用。所以像微信 QQ 等一般都是用AMR格式来作为录音传输。

AMR 音频

转自http://www.liveslives.com http://blog.csdn.net/huutu

AMR是安卓平台录音的文件格式，IOS已经不支持这种格式了，不过好在安卓是开源系统，所以在IOS上可以自己编译lib 来编码和解析 AMR。

Android端

开始录音

mRecorder = new MediaRecorder();mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); // 设置音频来源（MIC表示麦克风）mRecorder.setOutputFormat(MediaRecorder.OutputFormat.RAW_AMR); // 设置音频输出格式mRecorder.setOutputFile(mRecorderFilePath);//设置输出文件mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); // 设置音频编码为AMRmRecorder.setMaxDuration(20300);//设置录音时长mRecorder.setAudioEncodingBitRate(4000);mRecorder.setAudioSamplingRate(8000);//采样率try {mRecorder.prepare();mRecorder.start();} catch (IllegalStateException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}

结束录音

mRecorder.stop();mRecorder.release();

转自http://www.liveslives.com http://blog.csdn.net/huutu

播放录音

MediaPlayer mPlayer = new MediaPlayer();mPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {//播放完毕回调监听@Overridepublic void onCompletion(MediaPlayer arg0) {Toast.makeText(MainActivity.this, "Play End", Toast.LENGTH_LONG).show();}});try {Log.i("yhxy", "Play mRecorderFilePath:"+mRecorderFilePath);File f= new File(mRecorderFilePath);  if (f.exists() && f.isFile()){  Toast.makeText(getApplicationContext(), "filesize:"+f.length(), Toast.LENGTH_LONG).show();}else{  Toast.makeText(getApplicationContext(), "file not exist", Toast.LENGTH_LONG).show();}  mPlayer.setDataSource(mRecorderFilePath);mPlayer.prepare();//开始播放mPlayer.start();} catch (IllegalArgumentException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (SecurityException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalStateException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}

Android 录音主要注意权限配置以及 OS 版本。

Manifest 配置

<uses-permission android:name="android.permission.RECORD_AUDIO"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /><uses-sdk android:minSdkVersion="10" android:targetSdkVersion="21" />

转自http://www.liveslives.com http://blog.csdn.net/huutu

IOS端

IOS没有对AMR支持，我们需要下载opencore-amr 源代码自行编译成 lib 。

编译opencore-amr

从SourceForge上下载：

https://sourceforge.net/projects/opencore-amr/

然后创建脚本build.sh

#!/bin/shset -xeVERSION="0.1.5" #opencore-amr versionSDKVERSION="10.3" #xcode Deployment TargetLIBSRCNAME="opencore-amr"CURRENTPATH=`pwd`mkdir -p "${CURRENTPATH}/src"tar zxvf ${LIBSRCNAME}-${VERSION}.tar.gz -C "${CURRENTPATH}/src"cd "${CURRENTPATH}/src/${LIBSRCNAME}-${VERSION}"DEVELOPER=`xcode-select -print-path`DEST="${CURRENTPATH}/lib-ios"mkdir -p "${DEST}"ARCHS="armv7 armv7s arm64 i386 x86_64"# ARCHS="armv7"LIBS="libopencore-amrnb.a libopencore-amrwb.a"DEVELOPER=`xcode-select -print-path`for arch in $ARCHS; docase $arch inarm*)IOSV="-miphoneos-version-min=7.0"if [ $arch == "arm64" ]thenIOSV="-miphoneos-version-min=7.0"fiecho "Building for iOS $arch ****************"SDKROOT="$(xcrun --sdk iphoneos --show-sdk-path)"CC="$(xcrun --sdk iphoneos -f clang)"CXX="$(xcrun --sdk iphoneos -f clang++)"CPP="$(xcrun -sdk iphonesimulator -f clang++)"CFLAGS="-isysroot $SDKROOT -arch $arch $IOSV -isystem $SDKROOT/usr/include -fembed-bitcode"CXXFLAGS=$CFLAGSCPPFLAGS=$CFLAGSexport CC CXX CFLAGS CXXFLAGS CPPFLAGS./configure \--host=arm-apple-darwin \--prefix=$DEST \--disable-shared --enable-static;;*)IOSV="-mios-simulator-version-min=7.0"echo "Building for iOS $arch*****************"SDKROOT=`xcodebuild -version -sdk iphonesimulator Path`CC="$(xcrun -sdk iphoneos -f clang)"CXX="$(xcrun -sdk iphonesimulator -f clang++)"CPP="$(xcrun -sdk iphonesimulator -f clang++)"CFLAGS="-isysroot $SDKROOT -arch $arch $IOSV -isystem $SDKROOT/usr/include -fembed-bitcode"CXXFLAGS=$CFLAGSCPPFLAGS=$CFLAGSexport CC CXX CFLAGS CXXFLAGS CPPFLAGS./configure \--prefix=$DEST \--disable-shared;;esacmake > /dev/nullmake installmake cleanfor i in $LIBS; domv $DEST/lib/$i $DEST/lib/$i.$archdonedonefor i in $LIBS; doinput=""for arch in $ARCHS; doinput="$input $DEST/lib/$i.$arch"donelipo -create -output $DEST/lib/$i $inputdone

将build.sh 和下载的 opencore 压缩包放置同一个目录，然后在终端中执行脚本。

转自http://www.liveslives.com http://blog.csdn.net/huutu

执行完毕之后，在 lib-ios 目录中可以看到编译好的lib。

配置Libraries

将上面编译好的lib 拖至Xcode中引用，然后添加 CoreAudio AVFoundation 。

开始录音

-(void)StartRecord:(NSString*)fileName;{        NSLog(@"StartRecord %@",fileName);        self.amrfilename=fileName;        //录音前先删除amr文件    NSFileManager *pfilemanager=[NSFileManager defaultManager];        NSArray* tmpPaths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);    NSString* tmpDocumentDir=[tmpPaths objectAtIndex:0];        NSString *ptmpAmrfilepath = [tmpDocumentDir stringByAppendingPathComponent:amrfilename];    NSLog(@"amr filepath:%@",ptmpAmrfilepath);        BOOL bRet=[pfilemanager fileExistsAtPath:ptmpAmrfilepath];    if(bRet)    {        NSLog(@"remove arm file:%@",ptmpAmrfilepath);        [pfilemanager removeItemAtPath:ptmpAmrfilepath error:nil];    }        NSString* ptmprecordfilename=@"tempRecordVoice.tmp";    NSString *ptmprecordfilepath = [tmpDocumentDir stringByAppendingPathComponent:ptmprecordfilename];    bRet=[pfilemanager fileExistsAtPath:ptmprecordfilepath];    if(bRet)    {        [pfilemanager removeItemAtPath:ptmprecordfilepath error:nil];    }                    //录音设置    NSDictionary *recordSetting = [[NSDictionary alloc] initWithObjectsAndKeys:                                   [NSNumber numberWithInt:kAudioFormatLinearPCM],AVFormatIDKey,                                   [NSNumber numberWithInt:8000],AVSampleRateKey,                                   [NSNumber numberWithInt:1],AVNumberOfChannelsKey,                                   [NSNumber numberWithInt:16],AVLinearPCMBitDepthKey,                                   nil];    //实例化AVAudioRecorder    audioRecorder = [[AVAudioRecorder alloc] initWithURL:                     [NSURL fileURLWithPath:ptmprecordfilepath]                                                settings:recordSetting                                                   error:nil];    [audioRecorder setDelegate:self];    audioRecorder.meteringEnabled = YES;    [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryRecord error:nil];    [[AVAudioSession sharedInstance] setActive:YES error:nil];    NSLog(@"startrecord 1");    if ([audioRecorder prepareToRecord])    {        NSLog(@"startrecord 2");        [audioRecorder record];    }    NSLog(@"startrecord 3");    }

停止录音

-(void)endRecord{    NSLog(@"endRecord");                if(audioRecorder==nil)    {        return;    }    if ([audioRecorder isRecording]) {        [audioRecorder stop];    }    [[AVAudioSession sharedInstance] setActive:NO error:nil];    [audioRecorder release];    audioRecorder=nil;    //[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];    [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient error:nil];}

播放录音

- (void)playWithData:(NSData*)data{    [self stopPlayQueue];    [self setAVAudioSession];        NSError *error = nil;    audioPlayer = [[AVAudioPlayer alloc] initWithData:data error:&error];    if (error) {        NSLog(@"Error: %@", [error localizedDescription]);    }    audioPlayer.delegate = self; // 设置代理    [audioPlayer prepareToPlay];// 准备播放    [audioPlayer play];// 开始播放}

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