[流媒體]Android 即時視頻採集—MediaRecoder錄製

文章目錄

• ① MediaRecoder使用
• ② LocalSocket使用
• ③ MediaRecorder相關

http://www.cnblogs.com/skyseraph/archive/2012/03/31/2427593.html

0 囉嗦

　　本篇的存在只是為系列的連貫性，其實在前面系列博文中對MediaRecoder已有用到，詳見前面Android系列博文Android(19)

1 概述

　　通過Android的MediaRecorder，在SetoutputFile函數中綁定LocalSocket實現

2 知識點① MediaRecoder使用

　　參考 【Android學習專題】多媒體篇：MediaRecorder 實現錄音機

② LocalSocket使用

　　在手機中實現資料的邊發送邊接收。

詳細參考：http://api.apkbus.com/reference/android/net/LocalSocket.html

http://api.apkbus.com/reference/android/net/LocalServerSocket.html

3 核心源碼① SurfaceView相關

　　參考 【流媒體】Android 即時視頻採集—Camera預覽採集
和
【Android學習專題】多媒體篇：MediaRecorder 實現錄音機

② Init LocalSocket

    private void initLocalSocket()    {        receiver = new LocalSocket();        try        {            lss = new LocalServerSocket("H264");            receiver.connect(new LocalSocketAddress("H264"));            receiver.setReceiveBufferSize(500000);            receiver.setSendBufferSize(500000);            sender = lss.accept();            sender.setReceiveBufferSize(500000);            sender.setSendBufferSize(500000);        } catch (IOException e1)        {            e1.printStackTrace();            Log.e("", "localSocket error:" + e1.getMessage());        }    }

③ MediaRecorder相關

參考：【Android學習專題】多媒體篇：MediaRecoder 實現錄影機
和 【Android學習專題】多媒體篇：MediaRecorder 實現錄音機

另附initiativeVideo核心模組

private boolean initializeVideo()    {        try        {            Log.i(TAG,"##initializeVideo....");            // 〇state: Initial 執行個體化MediaRecorder對象            if (mSurfaceView == null)            {                Log.e(TAG,"mSurfaceView is null in initializeVideo");                return false;            }            if(mMediaRecorder == null)                mMediaRecorder = new MediaRecorder();            else                mMediaRecorder.reset();                                                // 〇state: Initial=>Initialized            // set audio source as Microphone, video source as camera            // specified before settings Recording-parameters or encoders，called only before setOutputFormat            mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);             //mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);                        // 〇state: Initialized=>DataSourceConfigured            // 設定錄製視頻輸出格式            //     THREE_GPP:    3gp格式，H263視頻ARM音頻編碼            //    MPEG-4:        MPEG4 media file format            //    RAW_AMR:    只支援音頻且音頻編碼要求為AMR_NB            //    AMR_NB:                    //    ARM_MB:                    //    Default:                // 3gp or mp4            //Android支援的音頻編解碼僅為AMR_NB；支援的視頻編解碼僅為H263，H264隻支援解碼；支援對JPEG編解碼；輸出格式僅支援.3gp和.mp4            String lVideoFileFullPath;                lVideoFileFullPath = ".3gp"; //.mp4            mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);                //mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);            Log.i(TAG, "Video：Current container format: "+"3GP\n");                        // 設定視頻/音頻檔案的編碼：AAC/AMR_NB/AMR_MB/Default            //    video: H.263, MP4-SP, or H.264                mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);            //mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);            //mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);            Log.i(TAG, "Video：Current encoding format: "+"H264\n");                                    // audio: AMR-NB            //mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);                        // 設定視頻錄製的解析度。必須放在設定編碼和格式的後面，否則報錯            //mMediaRecorder.setVideoSize(176, 144);            mMediaRecorder.setVideoSize(320, 240);            //mMediaRecorder.setVideoSize(720, 480);                Log.i(TAG, "Video：Current Video Size: "+"320*240\n");                                    // 設定錄製的視訊框架率。必須放在設定編碼和格式的後面，否則報錯            mMediaRecorder.setVideoFrameRate(FRAME_RATE);                            // 預覽            mMediaRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());                            // 設定輸出檔案方式： 直接本機存放區   or LocalSocket遠程輸出            if(bIfNativeORRemote)    //Native            {                lVideoFileFullPath = strRecVideoFilePath + String.valueOf(System.currentTimeMillis()) + lVideoFileFullPath;                mRecVideoFile = new File(lVideoFileFullPath);                // mMediaRecorder.setOutputFile(mRecVideoFile.getAbsolutePath());                mMediaRecorder.setOutputFile(mRecVideoFile.getPath());    //called after set**Source before prepare                Log.i(TAG, "start write into file~");            }            else    //Remote            {                mMediaRecorder.setOutputFile(sender.getFileDescriptor()); //設定以流方式輸出                 Log.i(TAG, "start send into sender~");            }                        //             mMediaRecorder.setMaxDuration(0);//called after setOutputFile before prepare,if zero or negation,disables the limit            mMediaRecorder.setMaxFileSize(0);//called after setOutputFile before prepare,if zero or negation,disables the limit            try            {                     mMediaRecorder.setOnInfoListener(this);                mMediaRecorder.setOnErrorListener(this);                // 〇state: DataSourceConfigured => prepared                mMediaRecorder.prepare();                // 〇state: prepared => recording                mMediaRecorder.start();                bIfRecInProcess = true;                Log.i(TAG, "initializeVideo Start!");            } catch (Exception e)            {                        releaseMediaRecorder();                finish();                e.printStackTrace();            }            return true;        } catch (Exception e)        {            // TODO: handle exception            e.printStackTrace();            return false;        }    }