游戏中录音功能的实现
发表于2017-11-18
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。
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
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AMR mRecorder.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 block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }
结束录音
mRecorder.stop(); mRecorder.release();
播放录音
MediaPlayer mPlayer = new MediaPlayer(); mPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {//播放完毕回调监听 @Override public 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 block e.printStackTrace(); } catch (SecurityException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalStateException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.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" />
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/sh set -xe VERSION="0.1.5" #opencore-amr version SDKVERSION="10.3" #xcode Deployment Target LIBSRCNAME="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; do case $arch in arm*) IOSV="-miphoneos-version-min=7.0" if [ $arch == "arm64" ] then IOSV="-miphoneos-version-min=7.0" fi echo "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 $SDKROOT/usr/include -fembed-bitcode" CXXFLAGS=$CFLAGS CPPFLAGS=$CFLAGS export CC CXX CFLAGS CXXFLAGS CPPFLAGS ./configure \ --host=arm-apple-darwin \ --prefix=$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 $SDKROOT/usr/include -fembed-bitcode" CXXFLAGS=$CFLAGS CPPFLAGS=$CFLAGS export CC CXX CFLAGS CXXFLAGS CPPFLAGS ./configure \ --prefix=$DEST \ --disable-shared ;; esac make > /dev/null make install make clean for i in $LIBS; do mv $DEST/lib/$i $DEST/lib/$i.$arch done done for i in $LIBS; do input="" for arch in $ARCHS; do input="$input $DEST/lib/$i.$arch" done lipo -create -output $DEST/lib/$i $input done
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。
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 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 }