Example usage for android.media MediaMetadataRetriever OPTION_CLOSEST_SYNC

Introduction

In this page you can find the example usage for android.media MediaMetadataRetriever OPTION_CLOSEST_SYNC.

Prototype

int OPTION_CLOSEST_SYNC

To view the source code for android.media MediaMetadataRetriever OPTION_CLOSEST_SYNC.

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Document

This option is used with #getFrameAtTime(long,int) to retrieve a sync (or key) frame associated with a data source that is located closest to (in time) or at the given time.

Usage

From source file:com.aimfire.gallery.service.MovieProcessor.java

@Override
protected void onHandleIntent(Intent intent) {
    /*// w ww  .j  av  a 2s  .c  om
     * Obtain the FirebaseAnalytics instance.
     */
    mFirebaseAnalytics = FirebaseAnalytics.getInstance(this);

    boolean[] result = new boolean[] { false, false };
    String previewPath = null;
    String thumbPath = null;
    String configPath = null;
    String convertFilePath = null;

    String exportL = MainConsts.MEDIA_3D_RAW_PATH + "L.png";
    String exportR = MainConsts.MEDIA_3D_RAW_PATH + "R.png";

    Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND);

    Bundle extras = intent.getExtras();
    if (extras == null) {
        if (BuildConfig.DEBUG)
            Log.e(TAG, "onHandleIntent: error, wrong parameter");
        FirebaseCrash.report(new Exception("onHandleIntent: error, wrong parameter"));
        return;
    }

    String filePathL = extras.getString("lname");
    String filePathR = extras.getString("rname");
    String cvrNameNoExt = MediaScanner.getProcessedCvrName((new File(filePathL)).getName());

    if (BuildConfig.DEBUG)
        Log.d(TAG, "onHandleIntent:left file=" + filePathL + ", right file=" + filePathR);

    String creatorName = extras.getString("creator");
    String creatorPhotoUrl = extras.getString("photo");

    float scale = extras.getFloat(MainConsts.EXTRA_SCALE);

    /*
     * if left/right videos were taken using front facing camera,
     * they need to be swapped when generating sbs 
     */
    int facing = extras.getInt(MainConsts.EXTRA_FACING);
    boolean isFrontCamera = (facing == Camera.CameraInfo.CAMERA_FACING_FRONT) ? true : false;

    MediaMetadataRetriever retriever = new MediaMetadataRetriever();

    Bitmap bitmapL = null;
    Bitmap bitmapR = null;

    long frameTime = FIRST_KEYFRAME_TIME_US;
    if (BuildConfig.DEBUG)
        Log.d(TAG, "extract frame from left at " + frameTime / 1000 + "ms");

    try {
        long startUs = SystemClock.elapsedRealtimeNanos() / 1000;

        FileInputStream inputStreamL = new FileInputStream(filePathL);
        retriever.setDataSource(inputStreamL.getFD());
        inputStreamL.close();

        bitmapL = retriever.getFrameAtTime(frameTime, MediaMetadataRetriever.OPTION_CLOSEST_SYNC);

        FileInputStream inputStreamR = new FileInputStream(filePathR);
        retriever.setDataSource(inputStreamR.getFD());
        inputStreamR.close();

        bitmapR = retriever.getFrameAtTime(frameTime, MediaMetadataRetriever.OPTION_CLOSEST_SYNC);

        retriever.release();

        long stopUs = SystemClock.elapsedRealtimeNanos() / 1000;
        if (BuildConfig.DEBUG)
            Log.d(TAG, "retrieving preview frames took " + (stopUs - startUs) / 1000 + "ms");

        if ((bitmapL != null) && (bitmapR != null)) {
            saveFrame(bitmapL, exportL);
            saveFrame(bitmapR, exportR);
        } else {
            reportError(MediaScanner.getProcessedCvrPath((new File(filePathL)).getName()),
                    ERROR_EXTRACT_SYNC_FRAME_ERROR);
            return;
        }

        previewPath = MainConsts.MEDIA_3D_THUMB_PATH + cvrNameNoExt + ".jpeg";

        result = p.getInstance().f1(exportL, exportR, previewPath, scale, isFrontCamera);
    } catch (Exception ex) {
        retriever.release();
        reportError(MediaScanner.getProcessedCvrPath((new File(filePathL)).getName()),
                ERROR_EXTRACT_SYNC_FRAME_EXCEPTION);
        return;
    }

    if (!result[0]) {
        reportError(MediaScanner.getProcessedCvrPath((new File(filePathL)).getName()),
                ERROR_EXTRACT_SIMILARITY_MATRIX);

        File leftFrom = (new File(filePathL));
        File rightFrom = (new File(filePathR));
        File leftExportFrom = (new File(exportL));
        File rightExportFrom = (new File(exportR));

        if (!BuildConfig.DEBUG) {
            leftFrom.delete();
            rightFrom.delete();

            leftExportFrom.delete();
            rightExportFrom.delete();
        } else {
            File leftTo = new File(MainConsts.MEDIA_3D_DEBUG_PATH + leftFrom.getName());
            File rightTo = new File(MainConsts.MEDIA_3D_DEBUG_PATH + rightFrom.getName());

            leftFrom.renameTo(leftTo);
            rightFrom.renameTo(rightTo);

            File leftExportTo = new File(MainConsts.MEDIA_3D_DEBUG_PATH + leftExportFrom.getName());
            File rightExportTo = new File(MainConsts.MEDIA_3D_DEBUG_PATH + rightExportFrom.getName());

            leftExportFrom.renameTo(leftExportTo);
            rightExportFrom.renameTo(rightExportTo);
        }
    } else {
        double[] similarityMat = p.getInstance().g();

        String configData = similarityMat[0] + " " + similarityMat[1] + " " + similarityMat[2] + " "
                + similarityMat[3] + " " + similarityMat[4] + " " + similarityMat[5];

        if (result[1]) {
            convertFilePath = filePathR;
        } else {
            convertFilePath = filePathL;
        }

        configPath = createConfigFile(convertFilePath, configData);

        /*
         * save the thumbnail
         */
        if (bitmapL != null) {
            thumbPath = MainConsts.MEDIA_3D_THUMB_PATH + cvrNameNoExt + ".jpg";
            saveThumbnail(bitmapL, thumbPath);

            MediaScanner.insertExifInfo(thumbPath, "name=" + creatorName + "photourl=" + creatorPhotoUrl);
        }

        createZipFile(filePathL, filePathR, configPath, thumbPath, previewPath);

        /*
         * let CamcorderActivity know we are done.
         */
        reportResult(MediaScanner.getProcessedCvrPath((new File(filePathL)).getName()));
    }

    /*
     * paranoia
     */
    if (bitmapL != null) {
        bitmapL.recycle();
    }
    if (bitmapR != null) {
        bitmapR.recycle();
    }

    (new File(exportL)).delete();
    (new File(exportR)).delete();
}

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From source file:com.aimfire.demo.CamcorderActivity.java

private void generateThumbAndPreview(String filePath) {
    if (BuildConfig.DEBUG)
        Log.d(TAG, "generateThumbAndPreview");

    String movieNameNoExt = MediaScanner.getMovieNameNoExt(filePath);
    String previewPath = MainConsts.MEDIA_3D_THUMB_PATH + movieNameNoExt + ".jpeg";
    String thumbPath = MainConsts.MEDIA_3D_THUMB_PATH + movieNameNoExt + ".jpg";

    MediaMetadataRetriever retriever = new MediaMetadataRetriever();

    Bitmap bitmap = null;/* w ww.j ava  2 s.c o m*/

    try {
        FileInputStream inputStream = new FileInputStream(filePath);
        retriever.setDataSource(inputStream.getFD());
        inputStream.close();

        bitmap = retriever.getFrameAtTime(0L, MediaMetadataRetriever.OPTION_CLOSEST_SYNC);
        retriever.release();

        if (bitmap != null) {
            FileOutputStream out = null;
            out = new FileOutputStream(previewPath);
            bitmap.compress(Bitmap.CompressFormat.JPEG, 95, out);
            out.close();

            Bitmap thumbnail = ThumbnailUtils.extractThumbnail(bitmap, MainConsts.THUMBNAIL_SIZE,
                    MainConsts.THUMBNAIL_SIZE);
            out = new FileOutputStream(thumbPath);
            thumbnail.compress(Bitmap.CompressFormat.JPEG, 100, out);
            out.close();
        }
    } catch (Exception e) {
        if (BuildConfig.DEBUG)
            Log.e(TAG, "generateThumbAndPreview: exception" + e.getMessage());
        retriever.release();
        FirebaseCrash.report(e);
    }
}

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