ParsableNalUnitBitArray.smali

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


# instance fields
.field private bitOffset:I

.field private byteLimit:I

.field private byteOffset:I

.field private data:[B


# direct methods
.method public constructor <init>([BII)V
    .registers 4

    .line 38
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 39
    invoke-virtual {p0, p1, p2, p3}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->reset([BII)V

    return-void
.end method

.method private assertValidOffset()V
    .registers 3

    .line 206
    iget v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    if-ltz v0, :cond_10

    iget v1, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteLimit:I

    if-lt v0, v1, :cond_e

    if-ne v0, v1, :cond_10

    iget v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    if-nez v0, :cond_10

    :cond_e
    const/4 v0, 0x1

    goto :goto_11

    :cond_10
    const/4 v0, 0x0

    :goto_11
    invoke-static {v0}, Lcom/google/android/exoplayer2/util/Assertions;->checkState(Z)V

    return-void
.end method

.method private readExpGolombCodeNum()I
    .registers 5

    const/4 v0, 0x0

    const/4 v1, 0x0

    .line 193
    :goto_2
    invoke-virtual {p0}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->readBit()Z

    move-result v2

    if-nez v2, :cond_b

    add-int/lit8 v1, v1, 0x1

    goto :goto_2

    :cond_b
    const/4 v2, 0x1

    shl-int v3, v2, v1

    sub-int/2addr v3, v2

    if-lez v1, :cond_15

    .line 196
    invoke-virtual {p0, v1}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->readBits(I)I

    move-result v0

    :cond_15
    add-int/2addr v3, v0

    return v3
.end method

.method private shouldSkipByte(I)Z
    .registers 5

    const/4 v0, 0x2

    if-gt v0, p1, :cond_1b

    .line 200
    iget v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteLimit:I

    if-ge p1, v0, :cond_1b

    iget-object v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->data:[B

    aget-byte v1, v0, p1

    const/4 v2, 0x3

    if-ne v1, v2, :cond_1b

    add-int/lit8 v1, p1, -0x2

    aget-byte v1, v0, v1

    if-nez v1, :cond_1b

    const/4 v1, 0x1

    sub-int/2addr p1, v1

    aget-byte p1, v0, p1

    if-nez p1, :cond_1b

    return v1

    :cond_1b
    const/4 p1, 0x0

    return p1
.end method


# virtual methods
.method public final canReadBits(I)Z
    .registers 6

    .line 100
    iget v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    .line 101
    div-int/lit8 v1, p1, 0x8

    add-int v2, v0, v1

    .line 103
    iget v3, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    add-int/2addr v3, p1

    mul-int/lit8 v1, v1, 0x8

    sub-int/2addr v3, v1

    const/4 p1, 0x7

    if-le v3, p1, :cond_13

    add-int/lit8 v2, v2, 0x1

    add-int/lit8 v3, v3, -0x8

    :cond_13
    const/4 p1, 0x1

    :cond_14
    :goto_14
    add-int/2addr v0, p1

    if-gt v0, v2, :cond_26

    .line 108
    iget v1, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteLimit:I

    if-ge v2, v1, :cond_26

    .line 109
    invoke-direct {p0, v0}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->shouldSkipByte(I)Z

    move-result v1

    if-eqz v1, :cond_14

    add-int/lit8 v2, v2, 0x1

    add-int/lit8 v0, v0, 0x2

    goto :goto_14

    .line 115
    :cond_26
    iget v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteLimit:I

    if-lt v2, v0, :cond_30

    if-ne v2, v0, :cond_2f

    if-nez v3, :cond_2f

    goto :goto_30

    :cond_2f
    const/4 p1, 0x0

    :cond_30
    :goto_30
    return p1
.end method

.method public final canReadExpGolombCodedNum()Z
    .registers 8

    .line 160
    iget v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    .line 161
    iget v1, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    const/4 v2, 0x0

    const/4 v3, 0x0

    .line 163
    :goto_6
    iget v4, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    iget v5, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteLimit:I

    if-ge v4, v5, :cond_15

    invoke-virtual {p0}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->readBit()Z

    move-result v4

    if-nez v4, :cond_15

    add-int/lit8 v3, v3, 0x1

    goto :goto_6

    .line 166
    :cond_15
    iget v4, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    iget v5, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteLimit:I

    const/4 v6, 0x1

    if-ne v4, v5, :cond_1e

    const/4 v4, 0x1

    goto :goto_1f

    :cond_1e
    const/4 v4, 0x0

    .line 167
    :goto_1f
    iput v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    .line 168
    iput v1, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    if-nez v4, :cond_2f

    mul-int/lit8 v3, v3, 0x2

    add-int/2addr v3, v6

    .line 169
    invoke-virtual {p0, v3}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->canReadBits(I)Z

    move-result v0

    if-eqz v0, :cond_2f

    return v6

    :cond_2f
    return v2
.end method

.method public final readBit()Z
    .registers 4

    .line 124
    iget-object v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->data:[B

    iget v1, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    aget-byte v0, v0, v1

    iget v1, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    const/16 v2, 0x80

    shr-int v1, v2, v1

    and-int/2addr v0, v1

    if-eqz v0, :cond_11

    const/4 v0, 0x1

    goto :goto_12

    :cond_11
    const/4 v0, 0x0

    .line 125
    :goto_12
    invoke-virtual {p0}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->skipBit()V

    return v0
.end method

.method public final readBits(I)I
    .registers 11

    .line 137
    iget v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    add-int/2addr v0, p1

    iput v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    const/4 v0, 0x0

    const/4 v1, 0x0

    .line 138
    :goto_7
    iget v2, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    const/4 v3, 0x2

    const/4 v4, 0x1

    const/16 v5, 0x8

    if-le v2, v5, :cond_2c

    add-int/lit8 v2, v2, -0x8

    .line 139
    iput v2, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    .line 140
    iget-object v5, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->data:[B

    iget v6, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    aget-byte v5, v5, v6

    and-int/lit16 v5, v5, 0xff

    shl-int v2, v5, v2

    or-int/2addr v1, v2

    add-int/lit8 v2, v6, 0x1

    .line 141
    invoke-direct {p0, v2}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->shouldSkipByte(I)Z

    move-result v2

    if-eqz v2, :cond_27

    goto :goto_28

    :cond_27
    const/4 v3, 0x1

    :goto_28
    add-int/2addr v6, v3

    iput v6, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    goto :goto_7

    .line 143
    :cond_2c
    iget-object v6, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->data:[B

    iget v7, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    aget-byte v6, v6, v7

    and-int/lit16 v6, v6, 0xff

    rsub-int/lit8 v8, v2, 0x8

    shr-int/2addr v6, v8

    or-int/2addr v1, v6

    const/4 v6, -0x1

    rsub-int/lit8 p1, p1, 0x20

    ushr-int p1, v6, p1

    and-int/2addr p1, v1

    if-ne v2, v5, :cond_4f

    .line 146
    iput v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    add-int/lit8 v0, v7, 0x1

    .line 147
    invoke-direct {p0, v0}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->shouldSkipByte(I)Z

    move-result v0

    if-eqz v0, :cond_4b

    goto :goto_4c

    :cond_4b
    const/4 v3, 0x1

    :goto_4c
    add-int/2addr v7, v3

    iput v7, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    .line 149
    :cond_4f
    invoke-direct {p0}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->assertValidOffset()V

    return p1
.end method

.method public final readSignedExpGolombCodedInt()I
    .registers 4

    .line 187
    invoke-direct {p0}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->readExpGolombCodeNum()I

    move-result v0

    .line 188
    rem-int/lit8 v1, v0, 0x2

    const/4 v2, 0x1

    if-nez v1, :cond_b

    const/4 v1, -0x1

    goto :goto_c

    :cond_b
    const/4 v1, 0x1

    :goto_c
    add-int/2addr v0, v2

    div-int/lit8 v0, v0, 0x2

    mul-int v1, v1, v0

    return v1
.end method

.method public final readUnsignedExpGolombCodedInt()I
    .registers 2

    .line 178
    invoke-direct {p0}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->readExpGolombCodeNum()I

    move-result v0

    return v0
.end method

.method public final reset([BII)V
    .registers 4

    .line 50
    iput-object p1, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->data:[B

    .line 51
    iput p2, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    .line 52
    iput p3, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteLimit:I

    const/4 p1, 0x0

    .line 53
    iput p1, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    .line 54
    invoke-direct {p0}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->assertValidOffset()V

    return-void
.end method

.method public final skipBit()V
    .registers 4

    .line 61
    iget v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    const/4 v1, 0x1

    add-int/2addr v0, v1

    iput v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    const/16 v2, 0x8

    if-ne v0, v2, :cond_1b

    const/4 v0, 0x0

    .line 62
    iput v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    .line 63
    iget v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    add-int/lit8 v2, v0, 0x1

    invoke-direct {p0, v2}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->shouldSkipByte(I)Z

    move-result v2

    if-eqz v2, :cond_18

    const/4 v1, 0x2

    :cond_18
    add-int/2addr v0, v1

    iput v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    .line 65
    :cond_1b
    invoke-direct {p0}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->assertValidOffset()V

    return-void
.end method

.method public final skipBits(I)V
    .registers 6

    .line 74
    iget v0, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    .line 75
    div-int/lit8 v1, p1, 0x8

    add-int v2, v0, v1

    .line 76
    iput v2, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    .line 77
    iget v3, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    mul-int/lit8 v1, v1, 0x8

    sub-int/2addr p1, v1

    add-int/2addr v3, p1

    iput v3, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    const/4 p1, 0x7

    if-le v3, p1, :cond_1b

    add-int/lit8 v2, v2, 0x1

    .line 79
    iput v2, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    add-int/lit8 v3, v3, -0x8

    .line 80
    iput v3, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->bitOffset:I

    :cond_1b
    :goto_1b
    add-int/lit8 v0, v0, 0x1

    .line 82
    iget p1, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    if-gt v0, p1, :cond_30

    .line 83
    invoke-direct {p0, v0}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->shouldSkipByte(I)Z

    move-result p1

    if-eqz p1, :cond_1b

    .line 85
    iget p1, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    add-int/lit8 p1, p1, 0x1

    iput p1, p0, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->byteOffset:I

    add-int/lit8 v0, v0, 0x2

    goto :goto_1b

    .line 89
    :cond_30
    invoke-direct {p0}, Lcom/google/android/exoplayer2/util/ParsableNalUnitBitArray;->assertValidOffset()V

    return-void
.end method