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Rabbit-R1/android (non root)/java/sources/androidx/media3/extractor/Ac3Util.java
Andrew Smiley e45365584e Source Files
2024-05-21 17:08:36 -04:00

413 lines
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Java
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package androidx.media3.extractor;
import androidx.core.location.LocationRequestCompat;
import androidx.media3.common.DrmInitData;
import androidx.media3.common.Format;
import androidx.media3.common.util.ParsableBitArray;
import androidx.media3.common.util.ParsableByteArray;
import androidx.media3.common.util.Util;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.nio.ByteBuffer;
import okio.Utf8;
/* loaded from: classes2.dex */
public final class Ac3Util {
public static final int AC3_MAX_RATE_BYTES_PER_SECOND = 80000;
private static final int AC3_SYNCFRAME_AUDIO_SAMPLE_COUNT = 1536;
private static final int AUDIO_SAMPLES_PER_AUDIO_BLOCK = 256;
public static final int E_AC3_MAX_RATE_BYTES_PER_SECOND = 768000;
public static final int TRUEHD_MAX_RATE_BYTES_PER_SECOND = 3062500;
public static final int TRUEHD_RECHUNK_SAMPLE_COUNT = 16;
public static final int TRUEHD_SYNCFRAME_PREFIX_LENGTH = 10;
private static final int[] BLOCKS_PER_SYNCFRAME_BY_NUMBLKSCOD = {1, 2, 3, 6};
private static final int[] SAMPLE_RATE_BY_FSCOD = {48000, 44100, 32000};
private static final int[] SAMPLE_RATE_BY_FSCOD2 = {24000, 22050, 16000};
private static final int[] CHANNEL_COUNT_BY_ACMOD = {2, 1, 2, 3, 3, 4, 4, 5};
private static final int[] BITRATE_BY_HALF_FRMSIZECOD = {32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 448, 512, 576, 640};
private static final int[] SYNCFRAME_SIZE_WORDS_BY_HALF_FRMSIZECOD_44_1 = {69, 87, LocationRequestCompat.QUALITY_LOW_POWER, 121, 139, 174, 208, 243, 278, 348, 417, 487, 557, 696, 835, 975, 1114, 1253, 1393};
/* loaded from: classes2.dex */
public static final class SyncFrameInfo {
public static final int STREAM_TYPE_TYPE0 = 0;
public static final int STREAM_TYPE_TYPE1 = 1;
public static final int STREAM_TYPE_TYPE2 = 2;
public static final int STREAM_TYPE_UNDEFINED = -1;
public final int bitrate;
public final int channelCount;
public final int frameSize;
public final String mimeType;
public final int sampleCount;
public final int sampleRate;
public final int streamType;
@Target({ElementType.TYPE_USE})
@Documented
@Retention(RetentionPolicy.SOURCE)
/* loaded from: classes2.dex */
public @interface StreamType {
}
private SyncFrameInfo(String str, int i, int i2, int i3, int i4, int i5, int i6) {
this.mimeType = str;
this.streamType = i;
this.channelCount = i2;
this.sampleRate = i3;
this.frameSize = i4;
this.sampleCount = i5;
this.bitrate = i6;
}
}
public static Format parseAc3AnnexFFormat(ParsableByteArray parsableByteArray, String str, String str2, DrmInitData drmInitData) {
ParsableBitArray parsableBitArray = new ParsableBitArray();
parsableBitArray.reset(parsableByteArray);
int i = SAMPLE_RATE_BY_FSCOD[parsableBitArray.readBits(2)];
parsableBitArray.skipBits(8);
int i2 = CHANNEL_COUNT_BY_ACMOD[parsableBitArray.readBits(3)];
if (parsableBitArray.readBits(1) != 0) {
i2++;
}
int i3 = BITRATE_BY_HALF_FRMSIZECOD[parsableBitArray.readBits(5)] * 1000;
parsableBitArray.byteAlign();
parsableByteArray.setPosition(parsableBitArray.getBytePosition());
return new Format.Builder().setId(str).setSampleMimeType("audio/ac3").setChannelCount(i2).setSampleRate(i).setDrmInitData(drmInitData).setLanguage(str2).setAverageBitrate(i3).setPeakBitrate(i3).build();
}
public static Format parseEAc3AnnexFFormat(ParsableByteArray parsableByteArray, String str, String str2, DrmInitData drmInitData) {
String str3;
ParsableBitArray parsableBitArray = new ParsableBitArray();
parsableBitArray.reset(parsableByteArray);
int readBits = parsableBitArray.readBits(13) * 1000;
parsableBitArray.skipBits(3);
int i = SAMPLE_RATE_BY_FSCOD[parsableBitArray.readBits(2)];
parsableBitArray.skipBits(10);
int i2 = CHANNEL_COUNT_BY_ACMOD[parsableBitArray.readBits(3)];
if (parsableBitArray.readBits(1) != 0) {
i2++;
}
parsableBitArray.skipBits(3);
int readBits2 = parsableBitArray.readBits(4);
parsableBitArray.skipBits(1);
if (readBits2 > 0) {
parsableBitArray.skipBits(6);
if (parsableBitArray.readBits(1) != 0) {
i2 += 2;
}
parsableBitArray.skipBits(1);
}
if (parsableBitArray.bitsLeft() > 7) {
parsableBitArray.skipBits(7);
if (parsableBitArray.readBits(1) != 0) {
str3 = "audio/eac3-joc";
parsableBitArray.byteAlign();
parsableByteArray.setPosition(parsableBitArray.getBytePosition());
return new Format.Builder().setId(str).setSampleMimeType(str3).setChannelCount(i2).setSampleRate(i).setDrmInitData(drmInitData).setLanguage(str2).setPeakBitrate(readBits).build();
}
}
str3 = "audio/eac3";
parsableBitArray.byteAlign();
parsableByteArray.setPosition(parsableBitArray.getBytePosition());
return new Format.Builder().setId(str).setSampleMimeType(str3).setChannelCount(i2).setSampleRate(i).setDrmInitData(drmInitData).setLanguage(str2).setPeakBitrate(readBits).build();
}
public static SyncFrameInfo parseAc3SyncframeInfo(ParsableBitArray parsableBitArray) {
int i;
int i2;
String str;
int i3;
int i4;
int i5;
int i6;
int i7;
int i8;
int i9;
int i10;
int i11;
int i12;
int position = parsableBitArray.getPosition();
parsableBitArray.skipBits(40);
boolean z = parsableBitArray.readBits(5) > 10;
parsableBitArray.setPosition(position);
int i13 = -1;
if (z) {
parsableBitArray.skipBits(16);
int readBits = parsableBitArray.readBits(2);
if (readBits == 0) {
i13 = 0;
} else if (readBits == 1) {
i13 = 1;
} else if (readBits == 2) {
i13 = 2;
}
parsableBitArray.skipBits(3);
int readBits2 = (parsableBitArray.readBits(11) + 1) * 2;
int readBits3 = parsableBitArray.readBits(2);
if (readBits3 == 3) {
i8 = SAMPLE_RATE_BY_FSCOD2[parsableBitArray.readBits(2)];
i7 = 3;
i9 = 6;
} else {
int readBits4 = parsableBitArray.readBits(2);
int i14 = BLOCKS_PER_SYNCFRAME_BY_NUMBLKSCOD[readBits4];
i7 = readBits4;
i8 = SAMPLE_RATE_BY_FSCOD[readBits3];
i9 = i14;
}
int i15 = i9 * 256;
int calculateEac3Bitrate = calculateEac3Bitrate(readBits2, i8, i9);
int readBits5 = parsableBitArray.readBits(3);
boolean readBit = parsableBitArray.readBit();
i = CHANNEL_COUNT_BY_ACMOD[readBits5] + (readBit ? 1 : 0);
parsableBitArray.skipBits(10);
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(8);
}
if (readBits5 == 0) {
parsableBitArray.skipBits(5);
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(8);
}
}
if (i13 == 1 && parsableBitArray.readBit()) {
parsableBitArray.skipBits(16);
}
if (parsableBitArray.readBit()) {
if (readBits5 > 2) {
parsableBitArray.skipBits(2);
}
if ((readBits5 & 1) == 0 || readBits5 <= 2) {
i11 = 6;
} else {
i11 = 6;
parsableBitArray.skipBits(6);
}
if ((readBits5 & 4) != 0) {
parsableBitArray.skipBits(i11);
}
if (readBit && parsableBitArray.readBit()) {
parsableBitArray.skipBits(5);
}
if (i13 == 0) {
if (parsableBitArray.readBit()) {
i12 = 6;
parsableBitArray.skipBits(6);
} else {
i12 = 6;
}
if (readBits5 == 0 && parsableBitArray.readBit()) {
parsableBitArray.skipBits(i12);
}
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(i12);
}
int readBits6 = parsableBitArray.readBits(2);
if (readBits6 == 1) {
parsableBitArray.skipBits(5);
} else if (readBits6 == 2) {
parsableBitArray.skipBits(12);
} else if (readBits6 == 3) {
int readBits7 = parsableBitArray.readBits(5);
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(5);
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(4);
}
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(4);
}
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(4);
}
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(4);
}
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(4);
}
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(4);
}
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(4);
}
if (parsableBitArray.readBit()) {
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(4);
}
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(4);
}
}
}
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(5);
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(7);
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(8);
}
}
}
parsableBitArray.skipBits((readBits7 + 2) * 8);
parsableBitArray.byteAlign();
}
if (readBits5 < 2) {
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(14);
}
if (readBits5 == 0 && parsableBitArray.readBit()) {
parsableBitArray.skipBits(14);
}
}
if (parsableBitArray.readBit()) {
if (i7 == 0) {
parsableBitArray.skipBits(5);
} else {
for (int i16 = 0; i16 < i9; i16++) {
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(5);
}
}
}
}
}
}
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(5);
if (readBits5 == 2) {
parsableBitArray.skipBits(4);
}
if (readBits5 >= 6) {
parsableBitArray.skipBits(2);
}
if (parsableBitArray.readBit()) {
parsableBitArray.skipBits(8);
}
if (readBits5 == 0 && parsableBitArray.readBit()) {
parsableBitArray.skipBits(8);
}
if (readBits3 < 3) {
parsableBitArray.skipBit();
}
}
if (i13 == 0 && i7 != 3) {
parsableBitArray.skipBit();
}
if (i13 == 2 && (i7 == 3 || parsableBitArray.readBit())) {
i10 = 6;
parsableBitArray.skipBits(6);
} else {
i10 = 6;
}
str = (parsableBitArray.readBit() && parsableBitArray.readBits(i10) == 1 && parsableBitArray.readBits(8) == 1) ? "audio/eac3-joc" : "audio/eac3";
i2 = i13;
i3 = i15;
i5 = readBits2;
i6 = i8;
i4 = calculateEac3Bitrate;
} else {
parsableBitArray.skipBits(32);
int readBits8 = parsableBitArray.readBits(2);
String str2 = readBits8 == 3 ? null : "audio/ac3";
int readBits9 = parsableBitArray.readBits(6);
int i17 = BITRATE_BY_HALF_FRMSIZECOD[readBits9 / 2] * 1000;
int ac3SyncframeSize = getAc3SyncframeSize(readBits8, readBits9);
parsableBitArray.skipBits(8);
int readBits10 = parsableBitArray.readBits(3);
if ((readBits10 & 1) != 0 && readBits10 != 1) {
parsableBitArray.skipBits(2);
}
if ((readBits10 & 4) != 0) {
parsableBitArray.skipBits(2);
}
if (readBits10 == 2) {
parsableBitArray.skipBits(2);
}
int[] iArr = SAMPLE_RATE_BY_FSCOD;
int i18 = readBits8 < iArr.length ? iArr[readBits8] : -1;
i = CHANNEL_COUNT_BY_ACMOD[readBits10] + (parsableBitArray.readBit() ? 1 : 0);
i2 = -1;
str = str2;
i3 = AC3_SYNCFRAME_AUDIO_SAMPLE_COUNT;
i4 = i17;
i5 = ac3SyncframeSize;
i6 = i18;
}
return new SyncFrameInfo(str, i2, i, i6, i5, i3, i4);
}
public static int parseAc3SyncframeSize(byte[] bArr) {
if (bArr.length < 6) {
return -1;
}
if (((bArr[5] & 248) >> 3) > 10) {
return (((bArr[3] & 255) | ((bArr[2] & 7) << 8)) + 1) * 2;
}
byte b = bArr[4];
return getAc3SyncframeSize((b & 192) >> 6, b & Utf8.REPLACEMENT_BYTE);
}
public static int parseAc3SyncframeAudioSampleCount(ByteBuffer byteBuffer) {
if (((byteBuffer.get(byteBuffer.position() + 5) & 248) >> 3) > 10) {
return BLOCKS_PER_SYNCFRAME_BY_NUMBLKSCOD[((byteBuffer.get(byteBuffer.position() + 4) & 192) >> 6) != 3 ? (byteBuffer.get(byteBuffer.position() + 4) & 48) >> 4 : 3] * 256;
}
return AC3_SYNCFRAME_AUDIO_SAMPLE_COUNT;
}
public static int findTrueHdSyncframeOffset(ByteBuffer byteBuffer) {
int position = byteBuffer.position();
int limit = byteBuffer.limit() - 10;
for (int i = position; i <= limit; i++) {
if ((Util.getBigEndianInt(byteBuffer, i + 4) & (-2)) == -126718022) {
return i - position;
}
}
return -1;
}
public static int parseTrueHdSyncframeAudioSampleCount(byte[] bArr) {
if (bArr[4] == -8 && bArr[5] == 114 && bArr[6] == 111) {
byte b = bArr[7];
if ((b & 254) == 186) {
return 40 << ((bArr[(b & 255) == 187 ? '\t' : '\b'] >> 4) & 7);
}
}
return 0;
}
public static int parseTrueHdSyncframeAudioSampleCount(ByteBuffer byteBuffer, int i) {
return 40 << ((byteBuffer.get((byteBuffer.position() + i) + ((byteBuffer.get((byteBuffer.position() + i) + 7) & 255) == 187 ? 9 : 8)) >> 4) & 7);
}
private static int getAc3SyncframeSize(int i, int i2) {
int i3 = i2 / 2;
if (i < 0) {
return -1;
}
int[] iArr = SAMPLE_RATE_BY_FSCOD;
if (i >= iArr.length || i2 < 0) {
return -1;
}
int[] iArr2 = SYNCFRAME_SIZE_WORDS_BY_HALF_FRMSIZECOD_44_1;
if (i3 >= iArr2.length) {
return -1;
}
int i4 = iArr[i];
if (i4 == 44100) {
return (iArr2[i3] + (i2 % 2)) * 2;
}
int i5 = BITRATE_BY_HALF_FRMSIZECOD[i3];
return i4 == 32000 ? i5 * 6 : i5 * 4;
}
private static int calculateEac3Bitrate(int i, int i2, int i3) {
return (i * i2) / (i3 * 32);
}
private Ac3Util() {
}
}
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