Examples with Allocation com.google.android.exoplayer2.upstream.Allocation used on opensource projects

Example 1 with Allocation

use of com.google.android.exoplayer2.upstream.Allocation in project ExoPlayer by google.

the class DefaultTrackOutput method readData.

/**
   * Reads data from the front of the rolling buffer.
   *
   * @param absolutePosition The absolute position from which data should be read.
   * @param target The buffer into which data should be written.
   * @param length The number of bytes to read.
   */
private void readData(long absolutePosition, ByteBuffer target, int length) {
    int remaining = length;
    while (remaining > 0) {
        dropDownstreamTo(absolutePosition);
        int positionInAllocation = (int) (absolutePosition - totalBytesDropped);
        int toCopy = Math.min(remaining, allocationLength - positionInAllocation);
        Allocation allocation = dataQueue.peek();
        target.put(allocation.data, allocation.translateOffset(positionInAllocation), toCopy);
        absolutePosition += toCopy;
        remaining -= toCopy;
    }
}

Example 2 with Allocation

use of com.google.android.exoplayer2.upstream.Allocation in project ExoPlayer by google.

the class SampleDataQueue method readData.

/**
 * Reads data from {@code allocationNode} and its following nodes.
 *
 * @param allocationNode The first {@link AllocationNode} containing data yet to be read.
 * @param absolutePosition The absolute position from which data should be read.
 * @param target The buffer into which data should be written.
 * @param length The number of bytes to read.
 * @return The first {@link AllocationNode} that contains unread bytes after this method returns.
 */
private static AllocationNode readData(AllocationNode allocationNode, long absolutePosition, ByteBuffer target, int length) {
    allocationNode = getNodeContainingPosition(allocationNode, absolutePosition);
    int remaining = length;
    while (remaining > 0) {
        int toCopy = min(remaining, (int) (allocationNode.endPosition - absolutePosition));
        Allocation allocation = allocationNode.allocation;
        target.put(allocation.data, allocationNode.translateOffset(absolutePosition), toCopy);
        remaining -= toCopy;
        absolutePosition += toCopy;
        if (absolutePosition == allocationNode.endPosition) {
            allocationNode = allocationNode.next;
        }
    }
    return allocationNode;
}

Example 3 with Allocation

use of com.google.android.exoplayer2.upstream.Allocation in project ExoPlayer by google.

the class SampleQueueTest method readSingleSamples.

@Test
public void readSingleSamples() {
    sampleQueue.sampleData(new ParsableByteArray(DATA), ALLOCATION_SIZE);
    assertAllocationCount(1);
    // Nothing to read.
    assertNoSamplesToRead(null);
    sampleQueue.format(FORMAT_1);
    // Read the format.
    assertReadFormat(false, FORMAT_1);
    // Nothing to read.
    assertNoSamplesToRead(FORMAT_1);
    sampleQueue.sampleMetadata(1000, C.BUFFER_FLAG_KEY_FRAME, ALLOCATION_SIZE, 0, null);
    // If formatRequired, should read the format rather than the sample.
    assertReadFormat(true, FORMAT_1);
    // Otherwise should read the sample.
    assertReadSample(1000, /* isKeyFrame= */
    true, /* isDecodeOnly= */
    false, /* isEncrypted= */
    false, DATA, /* offset= */
    0, ALLOCATION_SIZE);
    // Allocation should still be held.
    assertAllocationCount(1);
    sampleQueue.discardToRead();
    // The allocation should have been released.
    assertAllocationCount(0);
    // Nothing to read.
    assertNoSamplesToRead(FORMAT_1);
    // Write a second sample followed by one byte that does not belong to it.
    sampleQueue.sampleData(new ParsableByteArray(DATA), ALLOCATION_SIZE);
    sampleQueue.sampleMetadata(2000, 0, ALLOCATION_SIZE - 1, 1, null);
    // If formatRequired, should read the format rather than the sample.
    assertReadFormat(true, FORMAT_1);
    // Read the sample.
    assertReadSample(2000, /* isKeyFrame= */
    false, /* isDecodeOnly= */
    false, /* isEncrypted= */
    false, DATA, /* offset= */
    0, ALLOCATION_SIZE - 1);
    // Allocation should still be held.
    assertAllocationCount(1);
    sampleQueue.discardToRead();
    // The last byte written to the sample queue may belong to a sample whose metadata has yet to be
    // written, so an allocation should still be held.
    assertAllocationCount(1);
    // Write metadata for a third sample containing the remaining byte.
    sampleQueue.sampleMetadata(3000, 0, 1, 0, null);
    // If formatRequired, should read the format rather than the sample.
    assertReadFormat(true, FORMAT_1);
    // Read the sample.
    assertReadSample(3000, /* isKeyFrame= */
    false, /* isDecodeOnly= */
    false, /* isEncrypted= */
    false, DATA, ALLOCATION_SIZE - 1, 1);
    // Allocation should still be held.
    assertAllocationCount(1);
    sampleQueue.discardToRead();
    // The allocation should have been released.
    assertAllocationCount(0);
}

Example 4 with Allocation

use of com.google.android.exoplayer2.upstream.Allocation in project ExoPlayer by google.

the class ExoPlayerTest method loading_withLargeAllocationCausingOom_playsRemainingMediaAndThenThrows.

@Test
public void loading_withLargeAllocationCausingOom_playsRemainingMediaAndThenThrows() {
    Loader.Loadable loadable = new Loader.Loadable() {

        @SuppressWarnings("UnusedVariable")
        @Override
        public void load() throws IOException {
            // This test needs the allocation to cause an OOM.
            @SuppressWarnings("unused") byte[] largeBuffer = new byte[Integer.MAX_VALUE];
        }

        @Override
        public void cancelLoad() {
        }
    };
    // Create 3 samples without end of stream signal to test that all 3 samples are
    // still played before the sample stream exception is thrown.
    FakeSampleStreamItem sample = oneByteSample(TimelineWindowDefinition.DEFAULT_WINDOW_OFFSET_IN_FIRST_PERIOD_US, C.BUFFER_FLAG_KEY_FRAME);
    FakeMediaPeriod.TrackDataFactory threeSamplesWithoutEos = (format, mediaPeriodId) -> ImmutableList.of(sample, sample, sample);
    MediaSource largeBufferAllocatingMediaSource = new FakeMediaSource(new FakeTimeline(), ExoPlayerTestRunner.VIDEO_FORMAT) {

        @Override
        protected MediaPeriod createMediaPeriod(MediaPeriodId id, TrackGroupArray trackGroupArray, Allocator allocator, MediaSourceEventListener.EventDispatcher mediaSourceEventDispatcher, DrmSessionManager drmSessionManager, DrmSessionEventListener.EventDispatcher drmEventDispatcher, @Nullable TransferListener transferListener) {
            return new FakeMediaPeriod(trackGroupArray, allocator, threeSamplesWithoutEos, mediaSourceEventDispatcher, drmSessionManager, drmEventDispatcher, /* deferOnPrepared= */
            false) {

                private final Loader loader = new Loader("ExoPlayerTest");

                @Override
                public boolean continueLoading(long positionUs) {
                    super.continueLoading(positionUs);
                    if (!loader.isLoading()) {
                        loader.startLoading(loadable, new FakeLoaderCallback(), /* defaultMinRetryCount= */
                        1);
                    }
                    return true;
                }

                @Override
                protected FakeSampleStream createSampleStream(Allocator allocator, @Nullable MediaSourceEventListener.EventDispatcher mediaSourceEventDispatcher, DrmSessionManager drmSessionManager, DrmSessionEventListener.EventDispatcher drmEventDispatcher, Format initialFormat, List<FakeSampleStreamItem> fakeSampleStreamItems) {
                    return new FakeSampleStream(allocator, mediaSourceEventDispatcher, drmSessionManager, drmEventDispatcher, initialFormat, fakeSampleStreamItems) {

                        @Override
                        public void maybeThrowError() throws IOException {
                            loader.maybeThrowError();
                        }
                    };
                }
            };
        }
    };
    FakeRenderer renderer = new FakeRenderer(C.TRACK_TYPE_VIDEO);
    ExoPlayerTestRunner testRunner = new ExoPlayerTestRunner.Builder(context).setMediaSources(largeBufferAllocatingMediaSource).setRenderers(renderer).build();
    ExoPlaybackException exception = assertThrows(ExoPlaybackException.class, () -> testRunner.start().blockUntilEnded(TIMEOUT_MS));
    assertThat(exception.type).isEqualTo(ExoPlaybackException.TYPE_SOURCE);
    assertThat(exception.getSourceException()).isInstanceOf(Loader.UnexpectedLoaderException.class);
    assertThat(exception.getSourceException().getCause()).isInstanceOf(OutOfMemoryError.class);
    assertThat(renderer.sampleBufferReadCount).isEqualTo(3);
}

Example 5 with Allocation

use of com.google.android.exoplayer2.upstream.Allocation in project ExoPlayer by google.

the class DefaultTrackOutput method readData.

/**
   * Reads data from the front of the rolling buffer.
   *
   * @param absolutePosition The absolute position from which data should be read.
   * @param target The array into which data should be written.
   * @param length The number of bytes to read.
   */
private void readData(long absolutePosition, byte[] target, int length) {
    int bytesRead = 0;
    while (bytesRead < length) {
        dropDownstreamTo(absolutePosition);
        int positionInAllocation = (int) (absolutePosition - totalBytesDropped);
        int toCopy = Math.min(length - bytesRead, allocationLength - positionInAllocation);
        Allocation allocation = dataQueue.peek();
        System.arraycopy(allocation.data, allocation.translateOffset(positionInAllocation), target, bytesRead, toCopy);
        absolutePosition += toCopy;
        bytesRead += toCopy;
    }
}