Ac3Util.smali

.class public final Lcom/google/android/exoplayer2/audio/Ac3Util;
.super Ljava/lang/Object;
.source "SourceFile"


# annotations
.annotation system Ldalvik/annotation/MemberClasses;
    value = {
        Lcom/google/android/exoplayer2/audio/Ac3Util$Ac3SyncFrameInfo;
    }
.end annotation


# static fields
.field private static final AC3_SYNCFRAME_AUDIO_SAMPLE_COUNT:I = 0x600

.field private static final AUDIO_SAMPLES_PER_AUDIO_BLOCK:I = 0x100

.field private static final BITRATE_BY_HALF_FRMSIZECOD:[I

.field private static final BLOCKS_PER_SYNCFRAME_BY_NUMBLKSCOD:[I

.field private static final CHANNEL_COUNT_BY_ACMOD:[I

.field private static final SAMPLE_RATE_BY_FSCOD:[I

.field private static final SAMPLE_RATE_BY_FSCOD2:[I

.field private static final SYNCFRAME_SIZE_WORDS_BY_HALF_FRMSIZECOD_44_1:[I


# direct methods
.method static constructor <clinit>()V
    .registers 2

    const/4 v0, 0x4

    new-array v0, v0, [I

    .line 103
    fill-array-data v0, :array_32

    sput-object v0, Lcom/google/android/exoplayer2/audio/Ac3Util;->BLOCKS_PER_SYNCFRAME_BY_NUMBLKSCOD:[I

    const/4 v0, 0x3

    new-array v1, v0, [I

    .line 107
    fill-array-data v1, :array_3e

    sput-object v1, Lcom/google/android/exoplayer2/audio/Ac3Util;->SAMPLE_RATE_BY_FSCOD:[I

    new-array v0, v0, [I

    .line 111
    fill-array-data v0, :array_48

    sput-object v0, Lcom/google/android/exoplayer2/audio/Ac3Util;->SAMPLE_RATE_BY_FSCOD2:[I

    const/16 v0, 0x8

    new-array v0, v0, [I

    .line 115
    fill-array-data v0, :array_52

    sput-object v0, Lcom/google/android/exoplayer2/audio/Ac3Util;->CHANNEL_COUNT_BY_ACMOD:[I

    const/16 v0, 0x13

    new-array v1, v0, [I

    .line 119
    fill-array-data v1, :array_66

    sput-object v1, Lcom/google/android/exoplayer2/audio/Ac3Util;->BITRATE_BY_HALF_FRMSIZECOD:[I

    new-array v0, v0, [I

    .line 124
    fill-array-data v0, :array_90

    sput-object v0, Lcom/google/android/exoplayer2/audio/Ac3Util;->SYNCFRAME_SIZE_WORDS_BY_HALF_FRMSIZECOD_44_1:[I

    return-void

    nop

    :array_32
    .array-data 4
        0x1
        0x2
        0x3
        0x6
    .end array-data

    :array_3e
    .array-data 4
        0xbb80
        0xac44
        0x7d00
    .end array-data

    :array_48
    .array-data 4
        0x5dc0
        0x5622
        0x3e80
    .end array-data

    :array_52
    .array-data 4
        0x2
        0x1
        0x2
        0x3
        0x3
        0x4
        0x4
        0x5
    .end array-data

    :array_66
    .array-data 4
        0x20
        0x28
        0x30
        0x38
        0x40
        0x50
        0x60
        0x70
        0x80
        0xa0
        0xc0
        0xe0
        0x100
        0x140
        0x180
        0x1c0
        0x200
        0x240
        0x280
    .end array-data

    :array_90
    .array-data 4
        0x45
        0x57
        0x68
        0x79
        0x8b
        0xae
        0xd0
        0xf3
        0x116
        0x15c
        0x1a1
        0x1e7
        0x22d
        0x2b8
        0x343
        0x3cf
        0x45a
        0x4e5
        0x571
    .end array-data
.end method

.method private constructor <init>()V
    .registers 1

    .line 305
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method public static getAc3SyncframeAudioSampleCount()I
    .registers 1

    const/16 v0, 0x600

    return v0
.end method

.method private static getAc3SyncframeSize(II)I
    .registers 6

    .line 287
    div-int/lit8 v0, p1, 0x2

    if-ltz p0, :cond_2e

    .line 288
    sget-object v1, Lcom/google/android/exoplayer2/audio/Ac3Util;->SAMPLE_RATE_BY_FSCOD:[I

    array-length v2, v1

    if-ge p0, v2, :cond_2e

    if-ltz p1, :cond_2e

    sget-object v2, Lcom/google/android/exoplayer2/audio/Ac3Util;->SYNCFRAME_SIZE_WORDS_BY_HALF_FRMSIZECOD_44_1:[I

    array-length v3, v2

    if-lt v0, v3, :cond_11

    goto :goto_2e

    .line 293
    :cond_11
    aget p0, v1, p0

    const v1, 0xac44

    if-ne p0, v1, :cond_20

    .line 295
    aget p0, v2, v0

    rem-int/lit8 p1, p1, 0x2

    add-int/2addr p0, p1

    mul-int/lit8 p0, p0, 0x2

    return p0

    .line 297
    :cond_20
    sget-object p1, Lcom/google/android/exoplayer2/audio/Ac3Util;->BITRATE_BY_HALF_FRMSIZECOD:[I

    aget p1, p1, v0

    const/16 v0, 0x7d00

    if-ne p0, v0, :cond_2b

    mul-int/lit8 p1, p1, 0x6

    return p1

    :cond_2b
    mul-int/lit8 p1, p1, 0x4

    return p1

    :cond_2e
    :goto_2e
    const/4 p0, -0x1

    return p0
.end method

.method public static parseAc3AnnexFFormat(Lcom/google/android/exoplayer2/util/ParsableByteArray;Ljava/lang/String;Ljava/lang/String;Lcom/google/android/exoplayer2/drm/DrmInitData;)Lcom/google/android/exoplayer2/Format;
    .registers 17

    .line 139
    invoke-virtual {p0}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->readUnsignedByte()I

    move-result v0

    and-int/lit16 v0, v0, 0xc0

    shr-int/lit8 v0, v0, 0x6

    .line 140
    sget-object v1, Lcom/google/android/exoplayer2/audio/Ac3Util;->SAMPLE_RATE_BY_FSCOD:[I

    aget v8, v1, v0

    .line 141
    invoke-virtual {p0}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->readUnsignedByte()I

    move-result v0

    .line 142
    sget-object v1, Lcom/google/android/exoplayer2/audio/Ac3Util;->CHANNEL_COUNT_BY_ACMOD:[I

    and-int/lit8 v2, v0, 0x38

    shr-int/lit8 v2, v2, 0x3

    aget v1, v1, v2

    and-int/lit8 v0, v0, 0x4

    if-eqz v0, :cond_1e

    add-int/lit8 v1, v1, 0x1

    :cond_1e
    move v7, v1

    const/4 v4, 0x0

    const/4 v5, -0x1

    const/4 v6, -0x1

    const/4 v9, 0x0

    const/4 v11, 0x0

    const-string v3, "audio/ac3"

    move-object v2, p1

    move-object/from16 v10, p3

    move-object v12, p2

    .line 146
    invoke-static/range {v2 .. v12}, Lcom/google/android/exoplayer2/Format;->createAudioSampleFormat(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;IIIILjava/util/List;Lcom/google/android/exoplayer2/drm/DrmInitData;ILjava/lang/String;)Lcom/google/android/exoplayer2/Format;

    move-result-object v0

    return-object v0
.end method

.method public static parseAc3SyncframeInfo(Lcom/google/android/exoplayer2/util/ParsableBitArray;)Lcom/google/android/exoplayer2/audio/Ac3Util$Ac3SyncFrameInfo;
    .registers 15

    .line 196
    invoke-virtual {p0}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->getPosition()I

    move-result v0

    const/16 v1, 0x28

    .line 197
    invoke-virtual {p0, v1}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->skipBits(I)V

    const/4 v1, 0x5

    .line 198
    invoke-virtual {p0, v1}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->readBits(I)I

    move-result v1

    const/16 v2, 0x10

    const/4 v3, 0x1

    if-ne v1, v2, :cond_15

    const/4 v1, 0x1

    goto :goto_16

    :cond_15
    const/4 v1, 0x0

    .line 199
    :goto_16
    invoke-virtual {p0, v0}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->setPosition(I)V

    const/4 v0, -0x1

    const/4 v4, 0x6

    const/4 v5, 0x3

    const/4 v6, 0x2

    if-eqz v1, :cond_5b

    .line 208
    invoke-virtual {p0, v2}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->skipBits(I)V

    .line 209
    invoke-virtual {p0, v6}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->readBits(I)I

    move-result v0

    .line 210
    invoke-virtual {p0, v5}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->skipBits(I)V

    const/16 v1, 0xb

    .line 211
    invoke-virtual {p0, v1}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->readBits(I)I

    move-result v1

    add-int/2addr v1, v3

    mul-int/lit8 v1, v1, 0x2

    .line 212
    invoke-virtual {p0, v6}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->readBits(I)I

    move-result v2

    if-ne v2, v5, :cond_41

    .line 215
    sget-object v2, Lcom/google/android/exoplayer2/audio/Ac3Util;->SAMPLE_RATE_BY_FSCOD2:[I

    invoke-virtual {p0, v6}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->readBits(I)I

    move-result v3

    aget v2, v2, v3

    goto :goto_4d

    .line 218
    :cond_41
    invoke-virtual {p0, v6}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->readBits(I)I

    move-result v3

    .line 219
    sget-object v4, Lcom/google/android/exoplayer2/audio/Ac3Util;->BLOCKS_PER_SYNCFRAME_BY_NUMBLKSCOD:[I

    aget v4, v4, v3

    .line 220
    sget-object v3, Lcom/google/android/exoplayer2/audio/Ac3Util;->SAMPLE_RATE_BY_FSCOD:[I

    aget v2, v3, v2

    :goto_4d
    mul-int/lit16 v4, v4, 0x100

    .line 223
    invoke-virtual {p0, v5}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->readBits(I)I

    move-result v3

    const-string v5, "audio/eac3"

    move v8, v0

    move v11, v1

    move v10, v2

    move v12, v4

    move-object v7, v5

    goto :goto_99

    :cond_5b
    const/16 v1, 0x20

    .line 226
    invoke-virtual {p0, v1}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->skipBits(I)V

    .line 227
    invoke-virtual {p0, v6}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->readBits(I)I

    move-result v1

    .line 228
    invoke-virtual {p0, v4}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->readBits(I)I

    move-result v2

    .line 229
    invoke-static {v1, v2}, Lcom/google/android/exoplayer2/audio/Ac3Util;->getAc3SyncframeSize(II)I

    move-result v2

    const/16 v4, 0x8

    .line 230
    invoke-virtual {p0, v4}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->skipBits(I)V

    .line 231
    invoke-virtual {p0, v5}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->readBits(I)I

    move-result v4

    and-int/lit8 v5, v4, 0x1

    if-eqz v5, :cond_7e

    if-eq v4, v3, :cond_7e

    .line 233
    invoke-virtual {p0, v6}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->skipBits(I)V

    :cond_7e
    and-int/lit8 v3, v4, 0x4

    if-eqz v3, :cond_85

    .line 236
    invoke-virtual {p0, v6}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->skipBits(I)V

    :cond_85
    if-ne v4, v6, :cond_8a

    .line 239
    invoke-virtual {p0, v6}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->skipBits(I)V

    .line 241
    :cond_8a
    sget-object v3, Lcom/google/android/exoplayer2/audio/Ac3Util;->SAMPLE_RATE_BY_FSCOD:[I

    aget v1, v3, v1

    const/16 v3, 0x600

    const-string v5, "audio/ac3"

    move v10, v1

    move v11, v2

    move v3, v4

    move-object v7, v5

    const/4 v8, -0x1

    const/16 v12, 0x600

    .line 244
    :goto_99
    invoke-virtual {p0}, Lcom/google/android/exoplayer2/util/ParsableBitArray;->readBit()Z

    move-result p0

    .line 245
    sget-object v0, Lcom/google/android/exoplayer2/audio/Ac3Util;->CHANNEL_COUNT_BY_ACMOD:[I

    aget v0, v0, v3

    add-int v9, v0, p0

    .line 246
    new-instance p0, Lcom/google/android/exoplayer2/audio/Ac3Util$Ac3SyncFrameInfo;

    const/4 v13, 0x0

    move-object v6, p0

    invoke-direct/range {v6 .. v13}, Lcom/google/android/exoplayer2/audio/Ac3Util$Ac3SyncFrameInfo;-><init>(Ljava/lang/String;IIIIILcom/google/android/exoplayer2/audio/Ac3Util$1;)V

    return-object p0
.end method

.method public static parseAc3SyncframeSize([B)I
    .registers 3

    .line 257
    array-length v0, p0

    const/4 v1, 0x5

    if-ge v0, v1, :cond_6

    const/4 p0, -0x1

    return p0

    :cond_6
    const/4 v0, 0x4

    .line 260
    aget-byte v1, p0, v0

    and-int/lit16 v1, v1, 0xc0

    shr-int/lit8 v1, v1, 0x6

    .line 261
    aget-byte p0, p0, v0

    and-int/lit8 p0, p0, 0x3f

    .line 262
    invoke-static {v1, p0}, Lcom/google/android/exoplayer2/audio/Ac3Util;->getAc3SyncframeSize(II)I

    move-result p0

    return p0
.end method

.method public static parseEAc3AnnexFFormat(Lcom/google/android/exoplayer2/util/ParsableByteArray;Ljava/lang/String;Ljava/lang/String;Lcom/google/android/exoplayer2/drm/DrmInitData;)Lcom/google/android/exoplayer2/Format;
    .registers 19

    const/4 v0, 0x2

    move-object v1, p0

    .line 162
    invoke-virtual {p0, v0}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->skipBytes(I)V

    .line 165
    invoke-virtual {p0}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->readUnsignedByte()I

    move-result v2

    and-int/lit16 v2, v2, 0xc0

    shr-int/lit8 v2, v2, 0x6

    .line 166
    sget-object v3, Lcom/google/android/exoplayer2/audio/Ac3Util;->SAMPLE_RATE_BY_FSCOD:[I

    aget v10, v3, v2

    .line 167
    invoke-virtual {p0}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->readUnsignedByte()I

    move-result v2

    .line 168
    sget-object v3, Lcom/google/android/exoplayer2/audio/Ac3Util;->CHANNEL_COUNT_BY_ACMOD:[I

    and-int/lit8 v4, v2, 0xe

    shr-int/lit8 v4, v4, 0x1

    aget v3, v3, v4

    and-int/lit8 v2, v2, 0x1

    if-eqz v2, :cond_23

    add-int/lit8 v3, v3, 0x1

    .line 174
    :cond_23
    invoke-virtual {p0}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->readUnsignedByte()I

    move-result v2

    and-int/lit8 v2, v2, 0x1e

    shr-int/lit8 v2, v2, 0x1

    if-lez v2, :cond_36

    .line 177
    invoke-virtual {p0}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->readUnsignedByte()I

    move-result v1

    and-int/2addr v0, v1

    if-eqz v0, :cond_36

    add-int/lit8 v3, v3, 0x2

    :cond_36
    move v9, v3

    const/4 v6, 0x0

    const/4 v7, -0x1

    const/4 v8, -0x1

    const/4 v11, 0x0

    const/4 v13, 0x0

    const-string v5, "audio/eac3"

    move-object/from16 v4, p1

    move-object/from16 v12, p3

    move-object/from16 v14, p2

    .line 184
    invoke-static/range {v4 .. v14}, Lcom/google/android/exoplayer2/Format;->createAudioSampleFormat(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;IIIILjava/util/List;Lcom/google/android/exoplayer2/drm/DrmInitData;ILjava/lang/String;)Lcom/google/android/exoplayer2/Format;

    move-result-object v0

    return-object v0
.end method

.method public static parseEAc3SyncframeAudioSampleCount(Ljava/nio/ByteBuffer;)I
    .registers 4

    .line 281
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->position()I

    move-result v0

    add-int/lit8 v0, v0, 0x4

    invoke-virtual {p0, v0}, Ljava/nio/ByteBuffer;->get(I)B

    move-result v0

    and-int/lit16 v0, v0, 0xc0

    const/4 v1, 0x6

    shr-int/2addr v0, v1

    const/4 v2, 0x3

    if-ne v0, v2, :cond_12

    goto :goto_24

    .line 282
    :cond_12
    sget-object v0, Lcom/google/android/exoplayer2/audio/Ac3Util;->BLOCKS_PER_SYNCFRAME_BY_NUMBLKSCOD:[I

    .line 283
    invoke-virtual {p0}, Ljava/nio/ByteBuffer;->position()I

    move-result v1

    add-int/lit8 v1, v1, 0x4

    invoke-virtual {p0, v1}, Ljava/nio/ByteBuffer;->get(I)B

    move-result p0

    and-int/lit8 p0, p0, 0x30

    shr-int/lit8 p0, p0, 0x4

    aget v1, v0, p0

    :goto_24
    mul-int/lit16 v1, v1, 0x100

    return v1
.end method