Package com.google.android.exoplayer2.audio

Class DtsUtil

  • public final class DtsUtil
extends Object
    Utility methods for parsing DTS frames.

    • Field Detail

      • DTS_MAX_RATE_BYTES_PER_SECOND

        public static final int DTS_MAX_RATE_BYTES_PER_SECOND
        Maximum rate for a DTS audio stream, in bytes per second.

        DTS allows an 'open' bitrate, but we assume the maximum listed value: 1536 kbit/s.

        See Also:
        Constant Field Values

      • DTS_HD_MAX_RATE_BYTES_PER_SECOND

        public static final int DTS_HD_MAX_RATE_BYTES_PER_SECOND
        Maximum rate for a DTS-HD audio stream, in bytes per second.
        See Also:
        Constant Field Values

    • Method Detail

      • isSyncWord

        public static boolean isSyncWord​(int word)
        Returns whether a given integer matches a DTS sync word. Synchronization and storage modes are defined in ETSI TS 102 114 V1.1.1 (2002-08), Section 5.3.
        Parameters:
        word - An integer.
        Returns:
        Whether a given integer matches a DTS sync word.

      • parseDtsFormat

        public static Format parseDtsFormat​(byte[] frame,
                                    @Nullable
                                    String trackId,
                                    @Nullable
                                    String language,
                                    @Nullable
                                    DrmInitData drmInitData)
        Returns the DTS format given data containing the DTS frame according to ETSI TS 102 114 subsections 5.3/5.4.
        Parameters:
        frame - The DTS frame to parse.
        trackId - The track identifier to set on the format.
        language - The language to set on the format.
        drmInitData - DrmInitData to be included in the format.
        Returns:
        The DTS format parsed from data in the header.

      • parseDtsAudioSampleCount

        public static int parseDtsAudioSampleCount​(byte[] data)
        Returns the number of audio samples represented by the given DTS frame.
        Parameters:
        data - The frame to parse.
        Returns:
        The number of audio samples represented by the frame.

      • parseDtsAudioSampleCount

        public static int parseDtsAudioSampleCount​(ByteBuffer buffer)
        Like parseDtsAudioSampleCount(byte[]) but reads from a ByteBuffer. The buffer's position is not modified.
        Parameters:
        buffer - The ByteBuffer from which to read.
        Returns:
        The number of audio samples represented by the syncframe.

      • getDtsFrameSize

        public static int getDtsFrameSize​(byte[] data)
        Returns the size in bytes of the given DTS frame.
        Parameters:
        data - The frame to parse.
        Returns:
        The frame's size in bytes.