Examples with MediaFormat android.media.MediaFormat used on opensource projects

Example 16 with MediaFormat

use of android.media.MediaFormat in project speechutils by Kaljurand.

the class MediaFormatFactory method createMediaFormat.

@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public static MediaFormat createMediaFormat(Type type, int sampleRate) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        MediaFormat format = new MediaFormat();
        // TODO: this causes a crash in MediaCodec.configure
        //format.setString(MediaFormat.KEY_FRAME_RATE, null);
        format.setInteger(MediaFormat.KEY_SAMPLE_RATE, sampleRate);
        format.setInteger(MediaFormat.KEY_CHANNEL_COUNT, 1);
        if (type == Type.AAC) {
            format.setString(MediaFormat.KEY_MIME, "audio/mp4a-latm");
            // TODO: or 39?
            format.setInteger(MediaFormat.KEY_AAC_PROFILE, 2);
            format.setInteger(MediaFormat.KEY_BIT_RATE, 64000);
        } else if (type == Type.FLAC) {
            //format.setString(MediaFormat.KEY_MIME, MediaFormat.MIMETYPE_AUDIO_FLAC); // API=21
            format.setString(MediaFormat.KEY_MIME, "audio/flac");
            format.setInteger(MediaFormat.KEY_BIT_RATE, 64000);
        //TODO: use another bit rate, does not seem to have effect always
        //format.setInteger(MediaFormat.KEY_BIT_RATE, 128000);
        } else {
            format.setString(MediaFormat.KEY_MIME, "audio/amr-wb");
            format.setInteger(MediaFormat.KEY_BIT_RATE, 23050);
        }
        return format;
    }
    return null;
}

Example 17 with MediaFormat

use of android.media.MediaFormat in project speechutils by Kaljurand.

the class EncodedAudioRecorder method recorderLoop.

@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
@Override
protected void recorderLoop(SpeechRecord speechRecord) {
    mNumBytesSubmitted = 0;
    mNumBytesDequeued = 0;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        MediaFormat format = MediaFormatFactory.createMediaFormat(MediaFormatFactory.Type.FLAC, getSampleRate());
        List<String> componentNames = AudioUtils.getEncoderNamesForType(format.getString(MediaFormat.KEY_MIME));
        for (String componentName : componentNames) {
            Log.i("component/format: " + componentName + "/" + format);
            MediaCodec codec = AudioUtils.createCodec(componentName, format);
            if (codec != null) {
                recorderEncoderLoop(codec, speechRecord);
                if (Log.DEBUG) {
                    AudioUtils.showMetrics(format, mNumBytesSubmitted, mNumBytesDequeued);
                }
                // TODO: we use the first one that is suitable
                break;
            }
        }
    }
}

Example 18 with MediaFormat

use of android.media.MediaFormat in project speechutils by Kaljurand.

the class AudioUtils method getAvailableEncoders.

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public static List<String> getAvailableEncoders(int sampleRate) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        MediaFormat format = MediaFormatFactory.createMediaFormat(MediaFormatFactory.Type.FLAC, sampleRate);
        MediaCodecList mcl = new MediaCodecList(MediaCodecList.REGULAR_CODECS);
        String encoderAsStr = mcl.findEncoderForFormat(format);
        List<String> encoders = new ArrayList<>();
        for (MediaCodecInfo info : mcl.getCodecInfos()) {
            if (info.isEncoder()) {
                if (info.getName().equals(encoderAsStr)) {
                    encoders.add("*** " + info.getName() + ": " + TextUtils.join(", ", info.getSupportedTypes()));
                } else {
                    encoders.add(info.getName() + ": " + TextUtils.join(", ", info.getSupportedTypes()));
                }
            }
        }
        return encoders;
    }
    return Collections.emptyList();
}

Example 19 with MediaFormat

use of android.media.MediaFormat in project Signal-Android by signalapp.

the class AudioCodec method createMediaCodec.

private MediaCodec createMediaCodec(int bufferSize) throws IOException {
    MediaCodec mediaCodec = MediaCodec.createEncoderByType("audio/mp4a-latm");
    MediaFormat mediaFormat = new MediaFormat();
    mediaFormat.setString(MediaFormat.KEY_MIME, "audio/mp4a-latm");
    mediaFormat.setInteger(MediaFormat.KEY_SAMPLE_RATE, SAMPLE_RATE);
    mediaFormat.setInteger(MediaFormat.KEY_CHANNEL_COUNT, CHANNELS);
    mediaFormat.setInteger(MediaFormat.KEY_MAX_INPUT_SIZE, bufferSize);
    mediaFormat.setInteger(MediaFormat.KEY_BIT_RATE, BIT_RATE);
    mediaFormat.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectLC);
    try {
        mediaCodec.configure(mediaFormat, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
    } catch (Exception e) {
        Log.w(TAG, e);
        mediaCodec.release();
        throw new IOException(e);
    }
    return mediaCodec;
}

Example 20 with MediaFormat

use of android.media.MediaFormat in project android_packages_apps_Gallery2 by LineageOS.

the class VideoUtils method genVideoUsingMuxer.

/**
 * @param srcPath the path of source video file.
 * @param dstPath the path of destination video file.
 * @param startMs starting time in milliseconds for trimming. Set to
 *            negative if starting from beginning.
 * @param endMs end time for trimming in milliseconds. Set to negative if
 *            no trimming at the end.
 * @param useAudio true if keep the audio track from the source.
 * @param useVideo true if keep the video track from the source.
 * @throws IOException
 */
private static void genVideoUsingMuxer(String srcPath, String dstPath, int startMs, int endMs, boolean useAudio, boolean useVideo) throws IOException {
    // Set up MediaExtractor to read from the source.
    MediaExtractor extractor = new MediaExtractor();
    extractor.setDataSource(srcPath);
    int trackCount = extractor.getTrackCount();
    // Set up MediaMuxer for the destination.
    MediaMuxer muxer;
    muxer = new MediaMuxer(dstPath, MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4);
    // Set up the tracks and retrieve the max buffer size for selected
    // tracks.
    HashMap<Integer, Integer> indexMap = new HashMap<Integer, Integer>(trackCount);
    int bufferSize = -1;
    for (int i = 0; i < trackCount; i++) {
        MediaFormat format = extractor.getTrackFormat(i);
        String mime = format.getString(MediaFormat.KEY_MIME);
        boolean selectCurrentTrack = false;
        if (mime.startsWith("audio/") && useAudio) {
            selectCurrentTrack = true;
        } else if (mime.startsWith("video/") && useVideo) {
            selectCurrentTrack = true;
        }
        if (selectCurrentTrack) {
            extractor.selectTrack(i);
            try {
                int dstIndex = muxer.addTrack(format);
                indexMap.put(i, dstIndex);
                if (format.containsKey(MediaFormat.KEY_MAX_INPUT_SIZE)) {
                    int newSize = format.getInteger(MediaFormat.KEY_MAX_INPUT_SIZE);
                    bufferSize = newSize > bufferSize ? newSize : bufferSize;
                }
            } catch (IllegalArgumentException e) {
                Log.e(LOGTAG, "Unsupported format '" + mime + "'");
                throw new IOException("Muxer does not support " + mime);
            }
        }
    }
    if (bufferSize < 0) {
        bufferSize = DEFAULT_BUFFER_SIZE;
    }
    // Set up the orientation and starting time for extractor.
    MediaMetadataRetriever retrieverSrc = new MediaMetadataRetriever();
    retrieverSrc.setDataSource(srcPath);
    String degreesString = retrieverSrc.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
    if (degreesString != null) {
        int degrees = Integer.parseInt(degreesString);
        if (degrees >= 0) {
            muxer.setOrientationHint(degrees);
        }
    }
    if (startMs > 0) {
        extractor.seekTo(startMs * 1000, MediaExtractor.SEEK_TO_CLOSEST_SYNC);
    }
    // Copy the samples from MediaExtractor to MediaMuxer. We will loop
    // for copying each sample and stop when we get to the end of the source
    // file or exceed the end time of the trimming.
    int offset = 0;
    int trackIndex = -1;
    ByteBuffer dstBuf = ByteBuffer.allocate(bufferSize);
    BufferInfo bufferInfo = new BufferInfo();
    try {
        muxer.start();
        while (true) {
            bufferInfo.offset = offset;
            bufferInfo.size = extractor.readSampleData(dstBuf, offset);
            if (bufferInfo.size < 0) {
                Log.d(LOGTAG, "Saw input EOS.");
                bufferInfo.size = 0;
                break;
            } else {
                bufferInfo.presentationTimeUs = extractor.getSampleTime();
                if (endMs > 0 && bufferInfo.presentationTimeUs > (endMs * 1000)) {
                    Log.d(LOGTAG, "The current sample is over the trim end time.");
                    break;
                } else {
                    bufferInfo.flags = extractor.getSampleFlags();
                    trackIndex = extractor.getSampleTrackIndex();
                    muxer.writeSampleData(indexMap.get(trackIndex), dstBuf, bufferInfo);
                    extractor.advance();
                }
            }
        }
        muxer.stop();
    } catch (IllegalStateException e) {
        // Swallow the exception due to malformed source.
        Log.w(LOGTAG, "The source video file is malformed");
        File f = new File(dstPath);
        if (f.exists()) {
            f.delete();
        }
        throw e;
    } finally {
        muxer.release();
    }
    return;
}