mirror of
https://github.com/Pinball3D/Rabbit-R1.git
synced 2024-12-27 09:32:27 -06:00
99 lines
3.9 KiB
Java
99 lines
3.9 KiB
Java
package androidx.media3.extractor.ogg;
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import androidx.media3.common.ParserException;
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import androidx.media3.common.util.Assertions;
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import androidx.media3.common.util.ParsableByteArray;
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import androidx.media3.extractor.ExtractorInput;
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import androidx.media3.extractor.ExtractorUtil;
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import java.io.IOException;
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/* loaded from: classes2.dex */
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final class OggPageHeader {
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private static final int CAPTURE_PATTERN = 1332176723;
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private static final int CAPTURE_PATTERN_SIZE = 4;
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public static final int EMPTY_PAGE_HEADER_SIZE = 27;
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public static final int MAX_PAGE_PAYLOAD = 65025;
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public static final int MAX_PAGE_SIZE = 65307;
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public static final int MAX_SEGMENT_COUNT = 255;
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public int bodySize;
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public long granulePosition;
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public int headerSize;
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public long pageChecksum;
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public int pageSegmentCount;
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public long pageSequenceNumber;
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public int revision;
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public long streamSerialNumber;
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public int type;
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public final int[] laces = new int[255];
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private final ParsableByteArray scratch = new ParsableByteArray(255);
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public void reset() {
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this.revision = 0;
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this.type = 0;
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this.granulePosition = 0L;
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this.streamSerialNumber = 0L;
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this.pageSequenceNumber = 0L;
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this.pageChecksum = 0L;
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this.pageSegmentCount = 0;
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this.headerSize = 0;
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this.bodySize = 0;
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}
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public boolean skipToNextPage(ExtractorInput extractorInput) throws IOException {
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return skipToNextPage(extractorInput, -1L);
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}
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public boolean skipToNextPage(ExtractorInput extractorInput, long j) throws IOException {
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Assertions.checkArgument(extractorInput.getPosition() == extractorInput.getPeekPosition());
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this.scratch.reset(4);
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while (true) {
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if ((j == -1 || extractorInput.getPosition() + 4 < j) && ExtractorUtil.peekFullyQuietly(extractorInput, this.scratch.getData(), 0, 4, true)) {
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this.scratch.setPosition(0);
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if (this.scratch.readUnsignedInt() == 1332176723) {
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extractorInput.resetPeekPosition();
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return true;
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}
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extractorInput.skipFully(1);
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}
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}
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do {
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if (j != -1 && extractorInput.getPosition() >= j) {
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break;
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}
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} while (extractorInput.skip(1) != -1);
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return false;
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}
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public boolean populate(ExtractorInput extractorInput, boolean z) throws IOException {
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reset();
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this.scratch.reset(27);
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if (!ExtractorUtil.peekFullyQuietly(extractorInput, this.scratch.getData(), 0, 27, z) || this.scratch.readUnsignedInt() != 1332176723) {
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return false;
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}
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int readUnsignedByte = this.scratch.readUnsignedByte();
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this.revision = readUnsignedByte;
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if (readUnsignedByte != 0) {
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if (z) {
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return false;
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}
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throw ParserException.createForUnsupportedContainerFeature("unsupported bit stream revision");
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}
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this.type = this.scratch.readUnsignedByte();
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this.granulePosition = this.scratch.readLittleEndianLong();
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this.streamSerialNumber = this.scratch.readLittleEndianUnsignedInt();
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this.pageSequenceNumber = this.scratch.readLittleEndianUnsignedInt();
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this.pageChecksum = this.scratch.readLittleEndianUnsignedInt();
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int readUnsignedByte2 = this.scratch.readUnsignedByte();
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this.pageSegmentCount = readUnsignedByte2;
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this.headerSize = readUnsignedByte2 + 27;
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this.scratch.reset(readUnsignedByte2);
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if (!ExtractorUtil.peekFullyQuietly(extractorInput, this.scratch.getData(), 0, this.pageSegmentCount, z)) {
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return false;
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}
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for (int i = 0; i < this.pageSegmentCount; i++) {
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this.laces[i] = this.scratch.readUnsignedByte();
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this.bodySize += this.laces[i];
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}
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return true;
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}
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}
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