BitReaderBuffer.smali

.class public Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;
.super Ljava/lang/Object;
.source "SourceFile"


# instance fields
.field private buffer:Ljava/nio/ByteBuffer;

.field public initialPos:I

.field public position:I


# direct methods
.method public constructor <init>(Ljava/nio/ByteBuffer;)V
    .registers 2

    .line 1
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 2
    iput-object p1, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->buffer:Ljava/nio/ByteBuffer;

    .line 3
    invoke-virtual {p1}, Ljava/nio/Buffer;->position()I

    move-result p1

    iput p1, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->initialPos:I

    return-void
.end method


# virtual methods
.method public byteSync()I
    .registers 3

    .line 1
    iget v0, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->position:I

    const/16 v1, 0x8

    rem-int/2addr v0, v1

    rsub-int/lit8 v0, v0, 0x8

    if-ne v0, v1, :cond_a

    const/4 v0, 0x0

    .line 2
    :cond_a
    invoke-virtual {p0, v0}, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->readBits(I)I

    return v0
.end method

.method public getPosition()I
    .registers 2

    iget v0, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->position:I

    return v0
.end method

.method public readBits(I)I
    .registers 8

    .line 1
    iget-object v0, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->buffer:Ljava/nio/ByteBuffer;

    iget v1, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->initialPos:I

    iget v2, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->position:I

    div-int/lit8 v2, v2, 0x8

    add-int/2addr v2, v1

    invoke-virtual {v0, v2}, Ljava/nio/ByteBuffer;->get(I)B

    move-result v0

    if-gez v0, :cond_11

    add-int/lit16 v0, v0, 0x100

    .line 2
    :cond_11
    iget v1, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->position:I

    rem-int/lit8 v2, v1, 0x8

    rsub-int/lit8 v2, v2, 0x8

    if-gt p1, v2, :cond_27

    .line 3
    rem-int/lit8 v3, v1, 0x8

    shl-int/2addr v0, v3

    and-int/lit16 v0, v0, 0xff

    rem-int/lit8 v3, v1, 0x8

    sub-int/2addr v2, p1

    add-int/2addr v2, v3

    shr-int/2addr v0, v2

    add-int/2addr v1, p1

    .line 4
    iput v1, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->position:I

    goto :goto_32

    :cond_27
    sub-int/2addr p1, v2

    .line 5
    invoke-virtual {p0, v2}, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->readBits(I)I

    move-result v0

    shl-int/2addr v0, p1

    .line 6
    invoke-virtual {p0, p1}, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->readBits(I)I

    move-result p1

    add-int/2addr v0, p1

    .line 7
    :goto_32
    iget-object p1, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->buffer:Ljava/nio/ByteBuffer;

    iget v1, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->initialPos:I

    iget v2, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->position:I

    int-to-double v2, v2

    const-wide/high16 v4, 0x4020000000000000L    # 8.0

    div-double/2addr v2, v4

    invoke-static {v2, v3}, Ljava/lang/Math;->ceil(D)D

    move-result-wide v2

    double-to-int v2, v2

    add-int/2addr v1, v2

    invoke-virtual {p1, v1}, Ljava/nio/ByteBuffer;->position(I)Ljava/nio/Buffer;

    return v0
.end method

.method public remainingBits()I
    .registers 3

    iget-object v0, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->buffer:Ljava/nio/ByteBuffer;

    invoke-virtual {v0}, Ljava/nio/Buffer;->limit()I

    move-result v0

    mul-int/lit8 v0, v0, 0x8

    iget v1, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->position:I

    sub-int/2addr v0, v1

    return v0
.end method