Examples with RequiresNonNull org.checkerframework.checker.nullness.qual.RequiresNonNull used on opensource projects

Example 16 with RequiresNonNull

use of org.checkerframework.checker.nullness.qual.RequiresNonNull in project ExoPlayer by google.

the class SefSlowMotionFlattener method dropOrTransformSample.

/**
 * Applies slow motion flattening by either indicating that the buffer's data should be dropped or
 * transforming it in place.
 *
 * @return Whether the buffer should be dropped.
 */
@RequiresNonNull("#1.data")
public boolean dropOrTransformSample(DecoderInputBuffer buffer) {
    if (slowMotionData == null) {
        // The input is not an SEF slow motion video.
        return false;
    }
    ByteBuffer data = buffer.data;
    int originalPosition = data.position();
    data.position(originalPosition + NAL_START_CODE_LENGTH);
    // Read nal_unit_header_svc_extension.
    data.get(scratch, 0, 4);
    int nalUnitType = scratch[0] & 0x1F;
    boolean svcExtensionFlag = ((scratch[1] & 0xFF) >> 7) == 1;
    checkState(nalUnitType == NAL_UNIT_TYPE_PREFIX && svcExtensionFlag, "Missing SVC extension prefix NAL unit.");
    int layer = (scratch[3] & 0xFF) >> 5;
    boolean shouldKeepFrame = processCurrentFrame(layer, buffer.timeUs);
    // Update the timestamp regardless of whether the buffer is dropped as the timestamp may be
    // reused for the empty end-of-stream buffer.
    buffer.timeUs = getCurrentFrameOutputTimeUs(/* inputTimeUs= */
    buffer.timeUs);
    if (shouldKeepFrame) {
        data.position(originalPosition);
        return false;
    }
    return true;
}

Example 17 with RequiresNonNull

use of org.checkerframework.checker.nullness.qual.RequiresNonNull in project ExoPlayer by google.

the class TransformerBaseRenderer method feedMuxerFromPipeline.

/**
 * Attempts to write sample pipeline output data to the muxer.
 *
 * @return Whether it may be possible to write more data immediately by calling this method again.
 * @throws Muxer.MuxerException If a muxing problem occurs.
 * @throws TransformationException If a {@link SamplePipeline} problem occurs.
 */
@RequiresNonNull("samplePipeline")
private boolean feedMuxerFromPipeline() throws Muxer.MuxerException, TransformationException {
    if (!muxerWrapperTrackAdded) {
        @Nullable Format samplePipelineOutputFormat = samplePipeline.getOutputFormat();
        if (samplePipelineOutputFormat == null) {
            return false;
        }
        muxerWrapperTrackAdded = true;
        muxerWrapper.addTrackFormat(samplePipelineOutputFormat);
    }
    if (samplePipeline.isEnded()) {
        muxerWrapper.endTrack(getTrackType());
        muxerWrapperTrackEnded = true;
        return false;
    }
    @Nullable DecoderInputBuffer samplePipelineOutputBuffer = samplePipeline.getOutputBuffer();
    if (samplePipelineOutputBuffer == null) {
        return false;
    }
    if (!muxerWrapper.writeSample(getTrackType(), checkStateNotNull(samplePipelineOutputBuffer.data), samplePipelineOutputBuffer.isKeyFrame(), samplePipelineOutputBuffer.timeUs)) {
        return false;
    }
    samplePipeline.releaseOutputBuffer();
    return true;
}

Example 18 with RequiresNonNull

use of org.checkerframework.checker.nullness.qual.RequiresNonNull in project ExoPlayer by google.

the class DefaultCodecFactory method createCodec.

@RequiresNonNull("#1.sampleMimeType")
private static Codec createCodec(Format format, MediaFormat mediaFormat, boolean isVideo, boolean isDecoder, @Nullable Surface outputSurface) throws TransformationException {
    @Nullable MediaCodec mediaCodec = null;
    @Nullable Surface inputSurface = null;
    try {
        mediaCodec = isDecoder ? MediaCodec.createDecoderByType(format.sampleMimeType) : MediaCodec.createEncoderByType(format.sampleMimeType);
        configureCodec(mediaCodec, mediaFormat, isDecoder, outputSurface);
        if (isVideo && !isDecoder) {
            inputSurface = mediaCodec.createInputSurface();
        }
        startCodec(mediaCodec);
    } catch (Exception e) {
        if (inputSurface != null) {
            inputSurface.release();
        }
        @Nullable String mediaCodecName = null;
        if (mediaCodec != null) {
            mediaCodecName = mediaCodec.getName();
            mediaCodec.release();
        }
        throw createTransformationException(e, format, isVideo, isDecoder, mediaCodecName);
    }
    return new Codec(mediaCodec, format, inputSurface);
}

Example 19 with RequiresNonNull

use of org.checkerframework.checker.nullness.qual.RequiresNonNull in project ExoPlayer by google.

the class DefaultCodecFactory method getVideoEncoderSupportedFormat.

@RequiresNonNull("#1.sampleMimeType")
private static Format getVideoEncoderSupportedFormat(Format requestedFormat, List<String> allowedMimeTypes) throws TransformationException {
    String mimeType = requestedFormat.sampleMimeType;
    Format.Builder formatBuilder = requestedFormat.buildUpon();
    // TODO(b/210591626) Implement encoder filtering.
    if (!allowedMimeTypes.contains(mimeType) || EncoderUtil.getSupportedEncoders(mimeType).isEmpty()) {
        mimeType = allowedMimeTypes.contains(DEFAULT_FALLBACK_MIME_TYPE) ? DEFAULT_FALLBACK_MIME_TYPE : allowedMimeTypes.get(0);
        if (EncoderUtil.getSupportedEncoders(mimeType).isEmpty()) {
            throw createTransformationException(new IllegalArgumentException("No encoder is found for requested MIME type " + requestedFormat.sampleMimeType), requestedFormat, /* isVideo= */
            true, /* isDecoder= */
            false, /* mediaCodecName= */
            null);
        }
    }
    formatBuilder.setSampleMimeType(mimeType);
    MediaCodecInfo encoderInfo = EncoderUtil.getSupportedEncoders(mimeType).get(0);
    int width = requestedFormat.width;
    int height = requestedFormat.height;
    @Nullable Pair<Integer, Integer> encoderSupportedResolution = EncoderUtil.getClosestSupportedResolution(encoderInfo, mimeType, width, height);
    if (encoderSupportedResolution == null) {
        throw createTransformationException(new IllegalArgumentException("Cannot find fallback resolution for resolution " + width + " x " + height), requestedFormat, /* isVideo= */
        true, /* isDecoder= */
        false, /* mediaCodecName= */
        null);
    }
    width = encoderSupportedResolution.first;
    height = encoderSupportedResolution.second;
    formatBuilder.setWidth(width).setHeight(height);
    // The frameRate does not affect the resulting frame rate. It affects the encoder's rate control
    // algorithm. Setting it too high may lead to video quality degradation.
    float frameRate = requestedFormat.frameRate != Format.NO_VALUE ? requestedFormat.frameRate : DEFAULT_FRAME_RATE;
    int bitrate = EncoderUtil.getClosestSupportedBitrate(encoderInfo, mimeType, /* bitrate= */
    requestedFormat.averageBitrate != Format.NO_VALUE ? requestedFormat.averageBitrate : getSuggestedBitrate(width, height, frameRate));
    formatBuilder.setFrameRate(frameRate).setAverageBitrate(bitrate);
    @Nullable Pair<Integer, Integer> profileLevel = MediaCodecUtil.getCodecProfileAndLevel(requestedFormat);
    if (profileLevel == null || // Transcoding to another MIME type.
    !requestedFormat.sampleMimeType.equals(mimeType) || !EncoderUtil.isProfileLevelSupported(encoderInfo, mimeType, /* profile= */
    profileLevel.first, /* level= */
    profileLevel.second)) {
        formatBuilder.setCodecs(null);
    }
    return formatBuilder.build();
}

Example 20 with RequiresNonNull

use of org.checkerframework.checker.nullness.qual.RequiresNonNull in project ExoPlayer by google.

the class HlsSampleStreamWrapper method mapSampleQueuesToMatchTrackGroups.

@RequiresNonNull("trackGroups")
@EnsuresNonNull("trackGroupToSampleQueueIndex")
private void mapSampleQueuesToMatchTrackGroups() {
    int trackGroupCount = trackGroups.length;
    trackGroupToSampleQueueIndex = new int[trackGroupCount];
    Arrays.fill(trackGroupToSampleQueueIndex, C.INDEX_UNSET);
    for (int i = 0; i < trackGroupCount; i++) {
        for (int queueIndex = 0; queueIndex < sampleQueues.length; queueIndex++) {
            SampleQueue sampleQueue = sampleQueues[queueIndex];
            Format upstreamFormat = Assertions.checkStateNotNull(sampleQueue.getUpstreamFormat());
            if (formatsMatch(upstreamFormat, trackGroups.get(i).getFormat(0))) {
                trackGroupToSampleQueueIndex[i] = queueIndex;
                break;
            }
        }
    }
    for (HlsSampleStream sampleStream : hlsSampleStreams) {
        sampleStream.bindSampleQueue();
    }
}