Examples with Id3Decoder androidx.media3.extractor.metadata.id3.Id3Decoder used on opensource projects

Example 1 with Id3Decoder

use of androidx.media3.extractor.metadata.id3.Id3Decoder in project ExoPlayer by google.

the class Id3Peeker method peekId3Data.

/**
 * Peeks ID3 data from the input and parses the first ID3 tag.
 *
 * @param input The {@link ExtractorInput} from which data should be peeked.
 * @param id3FramePredicate Determines which ID3 frames are decoded. May be null to decode all
 *     frames.
 * @return The first ID3 tag decoded into a {@link Metadata} object. May be null if ID3 tag is not
 *     present in the input.
 * @throws IOException If an error occurred peeking from the input.
 */
@Nullable
public Metadata peekId3Data(ExtractorInput input, @Nullable Id3Decoder.FramePredicate id3FramePredicate) throws IOException {
    int peekedId3Bytes = 0;
    @Nullable Metadata metadata = null;
    while (true) {
        try {
            input.peekFully(scratch.getData(), /* offset= */
            0, Id3Decoder.ID3_HEADER_LENGTH);
        } catch (EOFException e) {
            // If input has less than ID3_HEADER_LENGTH, ignore the rest.
            break;
        }
        scratch.setPosition(0);
        if (scratch.readUnsignedInt24() != Id3Decoder.ID3_TAG) {
            // Not an ID3 tag.
            break;
        }
        // Skip major version, minor version and flags.
        scratch.skipBytes(3);
        int framesLength = scratch.readSynchSafeInt();
        int tagLength = Id3Decoder.ID3_HEADER_LENGTH + framesLength;
        if (metadata == null) {
            byte[] id3Data = new byte[tagLength];
            System.arraycopy(scratch.getData(), 0, id3Data, 0, Id3Decoder.ID3_HEADER_LENGTH);
            input.peekFully(id3Data, Id3Decoder.ID3_HEADER_LENGTH, framesLength);
            metadata = new Id3Decoder(id3FramePredicate).decode(id3Data, tagLength);
        } else {
            input.advancePeekPosition(framesLength);
        }
        peekedId3Bytes += tagLength;
    }
    input.resetPeekPosition();
    input.advancePeekPosition(peekedId3Bytes);
    return metadata;
}

Example 2 with Id3Decoder

use of androidx.media3.extractor.metadata.id3.Id3Decoder in project ExoPlayer by google.

the class HlsMediaChunk method createInstance.

/**
 * Creates a new instance.
 *
 * @param extractorFactory A {@link HlsExtractorFactory} from which the {@link
 *     HlsMediaChunkExtractor} is obtained.
 * @param dataSource The source from which the data should be loaded.
 * @param format The chunk format.
 * @param startOfPlaylistInPeriodUs The position of the playlist in the period in microseconds.
 * @param mediaPlaylist The media playlist from which this chunk was obtained.
 * @param segmentBaseHolder The segment holder.
 * @param playlistUrl The url of the playlist from which this chunk was obtained.
 * @param muxedCaptionFormats List of muxed caption {@link Format}s. Null if no closed caption
 *     information is available in the multivariant playlist.
 * @param trackSelectionReason See {@link #trackSelectionReason}.
 * @param trackSelectionData See {@link #trackSelectionData}.
 * @param isMasterTimestampSource True if the chunk can initialize the timestamp adjuster.
 * @param timestampAdjusterProvider The provider from which to obtain the {@link
 *     TimestampAdjuster}.
 * @param previousChunk The {@link HlsMediaChunk} that preceded this one. May be null.
 * @param mediaSegmentKey The media segment decryption key, if fully encrypted. Null otherwise.
 * @param initSegmentKey The initialization segment decryption key, if fully encrypted. Null
 *     otherwise.
 * @param shouldSpliceIn Whether samples for this chunk should be spliced into existing samples.
 */
public static HlsMediaChunk createInstance(HlsExtractorFactory extractorFactory, DataSource dataSource, Format format, long startOfPlaylistInPeriodUs, HlsMediaPlaylist mediaPlaylist, HlsChunkSource.SegmentBaseHolder segmentBaseHolder, Uri playlistUrl, @Nullable List<Format> muxedCaptionFormats, @C.SelectionReason int trackSelectionReason, @Nullable Object trackSelectionData, boolean isMasterTimestampSource, TimestampAdjusterProvider timestampAdjusterProvider, @Nullable HlsMediaChunk previousChunk, @Nullable byte[] mediaSegmentKey, @Nullable byte[] initSegmentKey, boolean shouldSpliceIn, PlayerId playerId) {
    // Media segment.
    HlsMediaPlaylist.SegmentBase mediaSegment = segmentBaseHolder.segmentBase;
    DataSpec dataSpec = new DataSpec.Builder().setUri(UriUtil.resolveToUri(mediaPlaylist.baseUri, mediaSegment.url)).setPosition(mediaSegment.byteRangeOffset).setLength(mediaSegment.byteRangeLength).setFlags(segmentBaseHolder.isPreload ? FLAG_MIGHT_NOT_USE_FULL_NETWORK_SPEED : 0).build();
    boolean mediaSegmentEncrypted = mediaSegmentKey != null;
    @Nullable byte[] mediaSegmentIv = mediaSegmentEncrypted ? getEncryptionIvArray(Assertions.checkNotNull(mediaSegment.encryptionIV)) : null;
    DataSource mediaDataSource = buildDataSource(dataSource, mediaSegmentKey, mediaSegmentIv);
    // Init segment.
    HlsMediaPlaylist.Segment initSegment = mediaSegment.initializationSegment;
    DataSpec initDataSpec = null;
    boolean initSegmentEncrypted = false;
    @Nullable DataSource initDataSource = null;
    if (initSegment != null) {
        initSegmentEncrypted = initSegmentKey != null;
        @Nullable byte[] initSegmentIv = initSegmentEncrypted ? getEncryptionIvArray(Assertions.checkNotNull(initSegment.encryptionIV)) : null;
        Uri initSegmentUri = UriUtil.resolveToUri(mediaPlaylist.baseUri, initSegment.url);
        initDataSpec = new DataSpec(initSegmentUri, initSegment.byteRangeOffset, initSegment.byteRangeLength);
        initDataSource = buildDataSource(dataSource, initSegmentKey, initSegmentIv);
    }
    long segmentStartTimeInPeriodUs = startOfPlaylistInPeriodUs + mediaSegment.relativeStartTimeUs;
    long segmentEndTimeInPeriodUs = segmentStartTimeInPeriodUs + mediaSegment.durationUs;
    int discontinuitySequenceNumber = mediaPlaylist.discontinuitySequence + mediaSegment.relativeDiscontinuitySequence;
    @Nullable HlsMediaChunkExtractor previousExtractor = null;
    Id3Decoder id3Decoder;
    ParsableByteArray scratchId3Data;
    if (previousChunk != null) {
        boolean isSameInitData = initDataSpec == previousChunk.initDataSpec || (initDataSpec != null && previousChunk.initDataSpec != null && initDataSpec.uri.equals(previousChunk.initDataSpec.uri) && initDataSpec.position == previousChunk.initDataSpec.position);
        boolean isFollowingChunk = playlistUrl.equals(previousChunk.playlistUrl) && previousChunk.loadCompleted;
        id3Decoder = previousChunk.id3Decoder;
        scratchId3Data = previousChunk.scratchId3Data;
        previousExtractor = isSameInitData && isFollowingChunk && !previousChunk.extractorInvalidated && previousChunk.discontinuitySequenceNumber == discontinuitySequenceNumber ? previousChunk.extractor : null;
    } else {
        id3Decoder = new Id3Decoder();
        scratchId3Data = new ParsableByteArray(Id3Decoder.ID3_HEADER_LENGTH);
    }
    return new HlsMediaChunk(extractorFactory, mediaDataSource, dataSpec, format, mediaSegmentEncrypted, initDataSource, initDataSpec, initSegmentEncrypted, playlistUrl, muxedCaptionFormats, trackSelectionReason, trackSelectionData, segmentStartTimeInPeriodUs, segmentEndTimeInPeriodUs, segmentBaseHolder.mediaSequence, segmentBaseHolder.partIndex, /* isPublished= */
    !segmentBaseHolder.isPreload, discontinuitySequenceNumber, mediaSegment.hasGapTag, isMasterTimestampSource, /* timestampAdjuster= */
    timestampAdjusterProvider.getAdjuster(discontinuitySequenceNumber), mediaSegment.drmInitData, previousExtractor, id3Decoder, scratchId3Data, shouldSpliceIn, playerId);
}

Example 3 with Id3Decoder

use of androidx.media3.extractor.metadata.id3.Id3Decoder in project Telegram-FOSS by Telegram-FOSS-Team.

the class Id3Peeker method peekId3Data.

/**
 * Peeks ID3 data from the input and parses the first ID3 tag.
 *
 * @param input The {@link ExtractorInput} from which data should be peeked.
 * @param id3FramePredicate Determines which ID3 frames are decoded. May be null to decode all
 *     frames.
 * @return The first ID3 tag decoded into a {@link Metadata} object. May be null if ID3 tag is not
 *     present in the input.
 * @throws IOException If an error occurred peeking from the input.
 * @throws InterruptedException If the thread was interrupted.
 */
@Nullable
public Metadata peekId3Data(ExtractorInput input, @Nullable Id3Decoder.FramePredicate id3FramePredicate) throws IOException, InterruptedException {
    int peekedId3Bytes = 0;
    Metadata metadata = null;
    while (true) {
        try {
            input.peekFully(scratch.data, /* offset= */
            0, Id3Decoder.ID3_HEADER_LENGTH);
        } catch (EOFException e) {
            // If input has less than ID3_HEADER_LENGTH, ignore the rest.
            break;
        }
        scratch.setPosition(0);
        if (scratch.readUnsignedInt24() != Id3Decoder.ID3_TAG) {
            // Not an ID3 tag.
            break;
        }
        // Skip major version, minor version and flags.
        scratch.skipBytes(3);
        int framesLength = scratch.readSynchSafeInt();
        int tagLength = Id3Decoder.ID3_HEADER_LENGTH + framesLength;
        if (metadata == null) {
            byte[] id3Data = new byte[tagLength];
            System.arraycopy(scratch.data, 0, id3Data, 0, Id3Decoder.ID3_HEADER_LENGTH);
            input.peekFully(id3Data, Id3Decoder.ID3_HEADER_LENGTH, framesLength);
            metadata = new Id3Decoder(id3FramePredicate).decode(id3Data, tagLength);
        } else {
            input.advancePeekPosition(framesLength);
        }
        peekedId3Bytes += tagLength;
    }
    input.resetPeekPosition();
    input.advancePeekPosition(peekedId3Bytes);
    return metadata;
}

Example 4 with Id3Decoder

use of androidx.media3.extractor.metadata.id3.Id3Decoder in project Telegram-FOSS by Telegram-FOSS-Team.

the class HlsMediaChunk method createInstance.

/**
 * Creates a new instance.
 *
 * @param extractorFactory A {@link HlsExtractorFactory} from which the HLS media chunk extractor
 *     is obtained.
 * @param dataSource The source from which the data should be loaded.
 * @param format The chunk format.
 * @param startOfPlaylistInPeriodUs The position of the playlist in the period in microseconds.
 * @param mediaPlaylist The media playlist from which this chunk was obtained.
 * @param playlistUrl The url of the playlist from which this chunk was obtained.
 * @param muxedCaptionFormats List of muxed caption {@link Format}s. Null if no closed caption
 *     information is available in the master playlist.
 * @param trackSelectionReason See {@link #trackSelectionReason}.
 * @param trackSelectionData See {@link #trackSelectionData}.
 * @param isMasterTimestampSource True if the chunk can initialize the timestamp adjuster.
 * @param timestampAdjusterProvider The provider from which to obtain the {@link
 *     TimestampAdjuster}.
 * @param previousChunk The {@link HlsMediaChunk} that preceded this one. May be null.
 * @param mediaSegmentKey The media segment decryption key, if fully encrypted. Null otherwise.
 * @param initSegmentKey The initialization segment decryption key, if fully encrypted. Null
 *     otherwise.
 */
public static HlsMediaChunk createInstance(HlsExtractorFactory extractorFactory, DataSource dataSource, Format format, long startOfPlaylistInPeriodUs, HlsMediaPlaylist mediaPlaylist, int segmentIndexInPlaylist, Uri playlistUrl, @Nullable List<Format> muxedCaptionFormats, int trackSelectionReason, @Nullable Object trackSelectionData, boolean isMasterTimestampSource, TimestampAdjusterProvider timestampAdjusterProvider, @Nullable HlsMediaChunk previousChunk, @Nullable byte[] mediaSegmentKey, @Nullable byte[] initSegmentKey) {
    // Media segment.
    HlsMediaPlaylist.Segment mediaSegment = mediaPlaylist.segments.get(segmentIndexInPlaylist);
    DataSpec dataSpec = new DataSpec(UriUtil.resolveToUri(mediaPlaylist.baseUri, mediaSegment.url), mediaSegment.byterangeOffset, mediaSegment.byterangeLength, /* key= */
    null);
    boolean mediaSegmentEncrypted = mediaSegmentKey != null;
    byte[] mediaSegmentIv = mediaSegmentEncrypted ? getEncryptionIvArray(Assertions.checkNotNull(mediaSegment.encryptionIV)) : null;
    DataSource mediaDataSource = buildDataSource(dataSource, mediaSegmentKey, mediaSegmentIv);
    // Init segment.
    HlsMediaPlaylist.Segment initSegment = mediaSegment.initializationSegment;
    DataSpec initDataSpec = null;
    boolean initSegmentEncrypted = false;
    DataSource initDataSource = null;
    if (initSegment != null) {
        initSegmentEncrypted = initSegmentKey != null;
        byte[] initSegmentIv = initSegmentEncrypted ? getEncryptionIvArray(Assertions.checkNotNull(initSegment.encryptionIV)) : null;
        Uri initSegmentUri = UriUtil.resolveToUri(mediaPlaylist.baseUri, initSegment.url);
        initDataSpec = new DataSpec(initSegmentUri, initSegment.byterangeOffset, initSegment.byterangeLength, /* key= */
        null);
        initDataSource = buildDataSource(dataSource, initSegmentKey, initSegmentIv);
    }
    long segmentStartTimeInPeriodUs = startOfPlaylistInPeriodUs + mediaSegment.relativeStartTimeUs;
    long segmentEndTimeInPeriodUs = segmentStartTimeInPeriodUs + mediaSegment.durationUs;
    int discontinuitySequenceNumber = mediaPlaylist.discontinuitySequence + mediaSegment.relativeDiscontinuitySequence;
    Extractor previousExtractor = null;
    Id3Decoder id3Decoder;
    ParsableByteArray scratchId3Data;
    boolean shouldSpliceIn;
    if (previousChunk != null) {
        id3Decoder = previousChunk.id3Decoder;
        scratchId3Data = previousChunk.scratchId3Data;
        shouldSpliceIn = !playlistUrl.equals(previousChunk.playlistUrl) || !previousChunk.loadCompleted;
        previousExtractor = previousChunk.isExtractorReusable && previousChunk.discontinuitySequenceNumber == discontinuitySequenceNumber && !shouldSpliceIn ? previousChunk.extractor : null;
    } else {
        id3Decoder = new Id3Decoder();
        scratchId3Data = new ParsableByteArray(Id3Decoder.ID3_HEADER_LENGTH);
        shouldSpliceIn = false;
    }
    return new HlsMediaChunk(extractorFactory, mediaDataSource, dataSpec, format, mediaSegmentEncrypted, initDataSource, initDataSpec, initSegmentEncrypted, playlistUrl, muxedCaptionFormats, trackSelectionReason, trackSelectionData, segmentStartTimeInPeriodUs, segmentEndTimeInPeriodUs, /* chunkMediaSequence= */
    mediaPlaylist.mediaSequence + segmentIndexInPlaylist, discontinuitySequenceNumber, mediaSegment.hasGapTag, isMasterTimestampSource, /* timestampAdjuster= */
    timestampAdjusterProvider.getAdjuster(discontinuitySequenceNumber), mediaSegment.drmInitData, previousExtractor, id3Decoder, scratchId3Data, shouldSpliceIn);
}

Example 5 with Id3Decoder

use of androidx.media3.extractor.metadata.id3.Id3Decoder in project media by androidx.

the class HlsMediaChunk method createInstance.

/**
 * Creates a new instance.
 *
 * @param extractorFactory A {@link HlsExtractorFactory} from which the {@link
 *     HlsMediaChunkExtractor} is obtained.
 * @param dataSource The source from which the data should be loaded.
 * @param format The chunk format.
 * @param startOfPlaylistInPeriodUs The position of the playlist in the period in microseconds.
 * @param mediaPlaylist The media playlist from which this chunk was obtained.
 * @param segmentBaseHolder The segment holder.
 * @param playlistUrl The url of the playlist from which this chunk was obtained.
 * @param muxedCaptionFormats List of muxed caption {@link Format}s. Null if no closed caption
 *     information is available in the multivariant playlist.
 * @param trackSelectionReason See {@link #trackSelectionReason}.
 * @param trackSelectionData See {@link #trackSelectionData}.
 * @param isMasterTimestampSource True if the chunk can initialize the timestamp adjuster.
 * @param timestampAdjusterProvider The provider from which to obtain the {@link
 *     TimestampAdjuster}.
 * @param previousChunk The {@link HlsMediaChunk} that preceded this one. May be null.
 * @param mediaSegmentKey The media segment decryption key, if fully encrypted. Null otherwise.
 * @param initSegmentKey The initialization segment decryption key, if fully encrypted. Null
 *     otherwise.
 * @param shouldSpliceIn Whether samples for this chunk should be spliced into existing samples.
 */
public static HlsMediaChunk createInstance(HlsExtractorFactory extractorFactory, DataSource dataSource, Format format, long startOfPlaylistInPeriodUs, HlsMediaPlaylist mediaPlaylist, HlsChunkSource.SegmentBaseHolder segmentBaseHolder, Uri playlistUrl, @Nullable List<Format> muxedCaptionFormats, @C.SelectionReason int trackSelectionReason, @Nullable Object trackSelectionData, boolean isMasterTimestampSource, TimestampAdjusterProvider timestampAdjusterProvider, @Nullable HlsMediaChunk previousChunk, @Nullable byte[] mediaSegmentKey, @Nullable byte[] initSegmentKey, boolean shouldSpliceIn, PlayerId playerId) {
    // Media segment.
    HlsMediaPlaylist.SegmentBase mediaSegment = segmentBaseHolder.segmentBase;
    DataSpec dataSpec = new DataSpec.Builder().setUri(UriUtil.resolveToUri(mediaPlaylist.baseUri, mediaSegment.url)).setPosition(mediaSegment.byteRangeOffset).setLength(mediaSegment.byteRangeLength).setFlags(segmentBaseHolder.isPreload ? FLAG_MIGHT_NOT_USE_FULL_NETWORK_SPEED : 0).build();
    boolean mediaSegmentEncrypted = mediaSegmentKey != null;
    @Nullable byte[] mediaSegmentIv = mediaSegmentEncrypted ? getEncryptionIvArray(Assertions.checkNotNull(mediaSegment.encryptionIV)) : null;
    DataSource mediaDataSource = buildDataSource(dataSource, mediaSegmentKey, mediaSegmentIv);
    // Init segment.
    HlsMediaPlaylist.Segment initSegment = mediaSegment.initializationSegment;
    DataSpec initDataSpec = null;
    boolean initSegmentEncrypted = false;
    @Nullable DataSource initDataSource = null;
    if (initSegment != null) {
        initSegmentEncrypted = initSegmentKey != null;
        @Nullable byte[] initSegmentIv = initSegmentEncrypted ? getEncryptionIvArray(Assertions.checkNotNull(initSegment.encryptionIV)) : null;
        Uri initSegmentUri = UriUtil.resolveToUri(mediaPlaylist.baseUri, initSegment.url);
        initDataSpec = new DataSpec(initSegmentUri, initSegment.byteRangeOffset, initSegment.byteRangeLength);
        initDataSource = buildDataSource(dataSource, initSegmentKey, initSegmentIv);
    }
    long segmentStartTimeInPeriodUs = startOfPlaylistInPeriodUs + mediaSegment.relativeStartTimeUs;
    long segmentEndTimeInPeriodUs = segmentStartTimeInPeriodUs + mediaSegment.durationUs;
    int discontinuitySequenceNumber = mediaPlaylist.discontinuitySequence + mediaSegment.relativeDiscontinuitySequence;
    @Nullable HlsMediaChunkExtractor previousExtractor = null;
    Id3Decoder id3Decoder;
    ParsableByteArray scratchId3Data;
    if (previousChunk != null) {
        boolean isSameInitData = initDataSpec == previousChunk.initDataSpec || (initDataSpec != null && previousChunk.initDataSpec != null && initDataSpec.uri.equals(previousChunk.initDataSpec.uri) && initDataSpec.position == previousChunk.initDataSpec.position);
        boolean isFollowingChunk = playlistUrl.equals(previousChunk.playlistUrl) && previousChunk.loadCompleted;
        id3Decoder = previousChunk.id3Decoder;
        scratchId3Data = previousChunk.scratchId3Data;
        previousExtractor = isSameInitData && isFollowingChunk && !previousChunk.extractorInvalidated && previousChunk.discontinuitySequenceNumber == discontinuitySequenceNumber ? previousChunk.extractor : null;
    } else {
        id3Decoder = new Id3Decoder();
        scratchId3Data = new ParsableByteArray(Id3Decoder.ID3_HEADER_LENGTH);
    }
    return new HlsMediaChunk(extractorFactory, mediaDataSource, dataSpec, format, mediaSegmentEncrypted, initDataSource, initDataSpec, initSegmentEncrypted, playlistUrl, muxedCaptionFormats, trackSelectionReason, trackSelectionData, segmentStartTimeInPeriodUs, segmentEndTimeInPeriodUs, segmentBaseHolder.mediaSequence, segmentBaseHolder.partIndex, /* isPublished= */
    !segmentBaseHolder.isPreload, discontinuitySequenceNumber, mediaSegment.hasGapTag, isMasterTimestampSource, /* timestampAdjuster= */
    timestampAdjusterProvider.getAdjuster(discontinuitySequenceNumber), mediaSegment.drmInitData, previousExtractor, id3Decoder, scratchId3Data, shouldSpliceIn, playerId);
}