BitReaderBuffer.smali

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


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

.field initialPos:I

.field position:I


# direct methods
.method static constructor <clinit>()V
    .registers 1

    return-void
.end method

.method public constructor <init>(Ljava/nio/ByteBuffer;)V
    .registers 3
    .param p1, "buffer"    # Ljava/nio/ByteBuffer;

    .line 11
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 12
    iput-object p1, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->buffer:Ljava/nio/ByteBuffer;

    .line 13
    invoke-virtual {p1}, Ljava/nio/ByteBuffer;->position()I

    move-result v0

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

    .line 14
    return-void
.end method


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

    .line 44
    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

    .line 45
    .local v0, "left":I
    if-ne v0, v1, :cond_a

    .line 46
    const/4 v0, 0x0

    .line 48
    :cond_a
    invoke-virtual {p0, v0}, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->readBits(I)I

    .line 49
    return v0
.end method

.method public getPosition()I
    .registers 2

    .line 40
    iget v0, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->position:I

    return v0
.end method

.method public readBits(I)I
    .registers 12
    .param p1, "i"    # I

    .line 21
    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 v1, v2

    invoke-virtual {v0, v1}, Ljava/nio/ByteBuffer;->get(I)B

    move-result v0

    .line 22
    .local v0, "b":B
    if-gez v0, :cond_12

    add-int/lit16 v1, v0, 0x100

    goto :goto_13

    :cond_12
    move v1, v0

    .line 23
    .local v1, "v":I
    :goto_13
    iget v2, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->position:I

    rem-int/lit8 v3, v2, 0x8

    rsub-int/lit8 v3, v3, 0x8

    .line 25
    .local v3, "left":I
    if-gt p1, v3, :cond_2b

    .line 26
    rem-int/lit8 v4, v2, 0x8

    shl-int v4, v1, v4

    and-int/lit16 v4, v4, 0xff

    rem-int/lit8 v5, v2, 0x8

    sub-int v6, v3, p1

    add-int/2addr v5, v6

    shr-int/2addr v4, v5

    .line 27
    .local v4, "rc":I
    add-int/2addr v2, p1

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

    .line 28
    goto :goto_39

    .line 29
    .end local v4    # "rc":I
    :cond_2b
    move v2, v3

    .line 30
    .local v2, "now":I
    sub-int v4, p1, v3

    .line 31
    .local v4, "then":I
    invoke-virtual {p0, v2}, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->readBits(I)I

    move-result v5

    .line 32
    .local v5, "rc":I
    shl-int/2addr v5, v4

    .line 33
    invoke-virtual {p0, v4}, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->readBits(I)I

    move-result v6

    add-int/2addr v5, v6

    move v4, v5

    .line 35
    .end local v2    # "now":I
    .end local v5    # "rc":I
    .local v4, "rc":I
    :goto_39
    iget-object v2, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->buffer:Ljava/nio/ByteBuffer;

    iget v5, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->initialPos:I

    iget v6, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->position:I

    int-to-double v6, v6

    const-wide/high16 v8, 0x4020000000000000L    # 8.0

    invoke-static {v6, v7}, Ljava/lang/Double;->isNaN(D)Z

    div-double/2addr v6, v8

    invoke-static {v6, v7}, Ljava/lang/Math;->ceil(D)D

    move-result-wide v6

    double-to-int v6, v6

    add-int/2addr v5, v6

    invoke-virtual {v2, v5}, Ljava/nio/ByteBuffer;->position(I)Ljava/nio/Buffer;

    .line 36
    return v4
.end method

.method public readBool()Z
    .registers 3

    .line 17
    const/4 v0, 0x1

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

    move-result v1

    if-ne v1, v0, :cond_8

    return v0

    :cond_8
    const/4 v0, 0x0

    return v0
.end method

.method public remainingBits()I
    .registers 3

    .line 53
    iget-object v0, p0, Lcom/googlecode/mp4parser/boxes/mp4/objectdescriptors/BitReaderBuffer;->buffer:Ljava/nio/ByteBuffer;

    invoke-virtual {v0}, Ljava/nio/ByteBuffer;->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