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

Example 26 with MediaExtractor

use of android.media.MediaExtractor in project Signal-Android by WhisperSystems.

the class AudioTrackConverter method create.

@Nullable
static AudioTrackConverter create(@NonNull final MediaInput input, final long timeFrom, final long timeTo, final int audioBitrate) throws IOException {
    final MediaExtractor audioExtractor = input.createExtractor();
    final int audioInputTrack = getAndSelectAudioTrackIndex(audioExtractor);
    if (audioInputTrack == -1) {
        audioExtractor.release();
        return null;
    }
    return new AudioTrackConverter(audioExtractor, audioInputTrack, timeFrom, timeTo, audioBitrate);
}

Example 27 with MediaExtractor

use of android.media.MediaExtractor in project Signal-Android by WhisperSystems.

the class VideoThumbnailsExtractor method extractThumbnails.

static void extractThumbnails(@NonNull final MediaInput input, final int thumbnailCount, final int thumbnailResolution, @NonNull final Callback callback) {
    MediaExtractor extractor = null;
    MediaCodec decoder = null;
    OutputSurface outputSurface = null;
    try {
        extractor = input.createExtractor();
        MediaFormat mediaFormat = null;
        for (int index = 0; index < extractor.getTrackCount(); ++index) {
            if (extractor.getTrackFormat(index).getString(MediaFormat.KEY_MIME).startsWith("video/")) {
                extractor.selectTrack(index);
                mediaFormat = extractor.getTrackFormat(index);
                break;
            }
        }
        if (mediaFormat != null) {
            final String mime = mediaFormat.getString(MediaFormat.KEY_MIME);
            final int rotation = mediaFormat.containsKey(MediaFormat.KEY_ROTATION) ? mediaFormat.getInteger(MediaFormat.KEY_ROTATION) : 0;
            final int width = mediaFormat.getInteger(MediaFormat.KEY_WIDTH);
            final int height = mediaFormat.getInteger(MediaFormat.KEY_HEIGHT);
            final int outputWidth;
            final int outputHeight;
            if (width < height) {
                outputWidth = thumbnailResolution;
                outputHeight = height * outputWidth / width;
            } else {
                outputHeight = thumbnailResolution;
                outputWidth = width * outputHeight / height;
            }
            final int outputWidthRotated;
            final int outputHeightRotated;
            if ((rotation % 180 == 90)) {
                // noinspection SuspiciousNameCombination
                outputWidthRotated = outputHeight;
                // noinspection SuspiciousNameCombination
                outputHeightRotated = outputWidth;
            } else {
                outputWidthRotated = outputWidth;
                outputHeightRotated = outputHeight;
            }
            Log.i(TAG, "video: " + width + "x" + height + " " + rotation);
            Log.i(TAG, "output: " + outputWidthRotated + "x" + outputHeightRotated);
            outputSurface = new OutputSurface(outputWidthRotated, outputHeightRotated, true);
            decoder = MediaCodec.createDecoderByType(mime);
            decoder.configure(mediaFormat, outputSurface.getSurface(), null, 0);
            decoder.start();
            long duration = 0;
            if (mediaFormat.containsKey(MediaFormat.KEY_DURATION)) {
                duration = mediaFormat.getLong(MediaFormat.KEY_DURATION);
            } else {
                Log.w(TAG, "Video is missing duration!");
            }
            callback.durationKnown(duration);
            doExtract(extractor, decoder, outputSurface, outputWidthRotated, outputHeightRotated, duration, thumbnailCount, callback);
        }
    } catch (IOException | TranscodingException | MediaCodec.CodecException e) {
        Log.w(TAG, e);
        callback.failed();
    } finally {
        if (outputSurface != null) {
            outputSurface.release();
        }
        if (decoder != null) {
            try {
                decoder.stop();
            } catch (MediaCodec.CodecException codecException) {
                Log.w(TAG, "Decoder stop failed: " + codecException.getDiagnosticInfo(), codecException);
            } catch (IllegalStateException ise) {
                Log.w(TAG, "Decoder stop failed", ise);
            }
            decoder.release();
        }
        if (extractor != null) {
            extractor.release();
        }
    }
}

Example 28 with MediaExtractor

use of android.media.MediaExtractor in project robolectric by robolectric.

the class ShadowMediaExtractorTest method selectTrack_onlyOneAtATime.

@Test
public void selectTrack_onlyOneAtATime() throws IOException {
    ShadowMediaExtractor.addTrack(dataSource, audioMediaFormat, new byte[0]);
    ShadowMediaExtractor.addTrack(dataSource, videoMediaFormat, new byte[0]);
    MediaExtractor mediaExtractor = new MediaExtractor();
    mediaExtractor.setDataSource(path);
    mediaExtractor.selectTrack(0);
    assertThrows(IllegalStateException.class, () -> mediaExtractor.selectTrack(1));
}

Example 29 with MediaExtractor

use of android.media.MediaExtractor in project robolectric by robolectric.

the class ShadowMediaExtractorTest method readSampleData_returnsSampleData.

@Test
public void readSampleData_returnsSampleData() throws IOException {
    byte[] sampleData = generateSampleData(4096);
    ShadowMediaExtractor.addTrack(dataSource, audioMediaFormat, sampleData);
    int byteBufferSize = 1024;
    ByteBuffer byteBuffer = ByteBuffer.allocate(byteBufferSize);
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    MediaExtractor mediaExtractor = new MediaExtractor();
    mediaExtractor.setDataSource(path);
    mediaExtractor.selectTrack(0);
    while (true) {
        int length = mediaExtractor.readSampleData(byteBuffer, 0);
        if (length == -1) {
            break;
        }
        outputStream.write(byteBuffer.array());
        byteBuffer.rewind();
        mediaExtractor.advance();
        assertThat(length).isEqualTo(byteBufferSize);
    }
    // Check that the read data matches the injected data.
    assertThat(outputStream.toByteArray()).isEqualTo(sampleData);
}

Example 30 with MediaExtractor

use of android.media.MediaExtractor in project robolectric by robolectric.

the class ShadowMediaExtractorTest method getSampleTrackIndex_returnsSelectedTrack.

@Test
public void getSampleTrackIndex_returnsSelectedTrack() throws IOException {
    ShadowMediaExtractor.addTrack(dataSource, audioMediaFormat, new byte[0]);
    ShadowMediaExtractor.addTrack(dataSource, videoMediaFormat, new byte[0]);
    MediaExtractor mediaExtractor = new MediaExtractor();
    mediaExtractor.setDataSource(path);
    mediaExtractor.selectTrack(0);
    assertThat(mediaExtractor.getSampleTrackIndex()).isEqualTo(0);
}