Package com.google.android.exoplayer2.audio

Class OpusUtil

  • @Deprecated
public class OpusUtil
extends Object
    Deprecated.
    com.google.android.exoplayer2 is deprecated. Please migrate to androidx.media3 (which contains the same ExoPlayer code). See the migration guide for more details, including a script to help with the migration.
    Utility methods for handling Opus audio streams.

    • Field Detail

      • SAMPLE_RATE

        public static final int SAMPLE_RATE
        Deprecated.
        Opus streams are always 48000 Hz.
        See Also:
        Constant Field Values

      • MAX_BYTES_PER_SECOND

        public static final int MAX_BYTES_PER_SECOND
        Deprecated.
        Maximum achievable Opus bitrate.
        See Also:
        Constant Field Values

    • Method Detail

      • getChannelCount

        public static int getChannelCount​(byte[] header)
        Deprecated.
        Parses the channel count from an Opus Identification Header.
        Parameters:
        header - An Opus Identification Header, as defined by RFC 7845.
        Returns:
        The parsed channel count.

      • buildInitializationData

        public static List<byte[]> buildInitializationData​(byte[] header)
        Deprecated.
        Builds codec initialization data from an Opus Identification Header.
        Parameters:
        header - An Opus Identification Header, as defined by RFC 7845.
        Returns:
        Codec initialization data suitable for an Opus MediaCodec.

      • parseOggPacketAudioSampleCount

        public static int parseOggPacketAudioSampleCount​(ByteBuffer buffer)
        Deprecated.
        Returns the number of audio samples in the given Ogg encapuslated Opus packet.

        The buffer's position is not modified.

        Parameters:
        buffer - The audio packet.
        Returns:
        Returns the number of audio samples in the packet.

      • parseOggPacketForPreAudioSampleByteCount

        public static int parseOggPacketForPreAudioSampleByteCount​(ByteBuffer buffer)
        Deprecated.
        Calculate the offset from the start of the buffer to audio sample Ogg packets.
        Parameters:
        buffer - containing the Ogg Encapsulated Opus audio bitstream.
        Returns:
        the offset before the Ogg packet containing audio samples.

      • parsePacketAudioSampleCount

        public static int parsePacketAudioSampleCount​(ByteBuffer buffer)
        Deprecated.
        Returns the number of audio samples in the given audio packet.

        The buffer's position is not modified.

        Parameters:
        buffer - The audio packet.
        Returns:
        Returns the number of audio samples in the packet.

      • getPacketDurationUs

        public static long getPacketDurationUs​(byte[] buffer)
        Deprecated.
        Returns the duration of the given audio packet.
        Parameters:
        buffer - The audio packet.
        Returns:
        Returns the duration of the given audio packet, in microseconds.