BitstreamReader.smali

.class public Lcom/googlecode/mp4parser/h264/read/BitstreamReader;
.super Ljava/lang/Object;
.source "SourceFile"


# static fields
.field public static bitsRead:I


# instance fields
.field private curByte:I

.field public debugBits:Lcom/googlecode/mp4parser/h264/CharCache;

.field private is:Ljava/io/InputStream;

.field public nBit:I

.field private nextByte:I


# direct methods
.method public constructor <init>(Ljava/io/InputStream;)V
    .registers 4
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

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

    .line 2
    new-instance v0, Lcom/googlecode/mp4parser/h264/CharCache;

    const/16 v1, 0x32

    invoke-direct {v0, v1}, Lcom/googlecode/mp4parser/h264/CharCache;-><init>(I)V

    iput-object v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->debugBits:Lcom/googlecode/mp4parser/h264/CharCache;

    .line 3
    iput-object p1, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->is:Ljava/io/InputStream;

    .line 4
    invoke-virtual {p1}, Ljava/io/InputStream;->read()I

    move-result v0

    iput v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->curByte:I

    .line 5
    invoke-virtual {p1}, Ljava/io/InputStream;->read()I

    move-result p1

    iput p1, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nextByte:I

    return-void
.end method

.method private advance()V
    .registers 2
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    .line 1
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nextByte:I

    iput v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->curByte:I

    .line 2
    iget-object v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->is:Ljava/io/InputStream;

    invoke-virtual {v0}, Ljava/io/InputStream;->read()I

    move-result v0

    iput v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nextByte:I

    const/4 v0, 0x0

    .line 3
    iput v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    return-void
.end method


# virtual methods
.method public close()V
    .registers 1
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    return-void
.end method

.method public getBitPosition()J
    .registers 3

    sget v0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->bitsRead:I

    mul-int/lit8 v0, v0, 0x8

    iget v1, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    rem-int/lit8 v1, v1, 0x8

    add-int/2addr v1, v0

    int-to-long v0, v1

    return-wide v0
.end method

.method public getCurBit()I
    .registers 2

    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    return v0
.end method

.method public isByteAligned()Z
    .registers 2

    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    rem-int/lit8 v0, v0, 0x8

    if-nez v0, :cond_8

    const/4 v0, 0x1

    goto :goto_9

    :cond_8
    const/4 v0, 0x0

    :goto_9
    return v0
.end method

.method public moreRBSPData()Z
    .registers 6
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    .line 1
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    const/16 v1, 0x8

    if-ne v0, v1, :cond_9

    .line 2
    invoke-direct {p0}, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->advance()V

    .line 3
    :cond_9
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    sub-int/2addr v1, v0

    const/4 v0, 0x1

    sub-int/2addr v1, v0

    shl-int v1, v0, v1

    shl-int/lit8 v2, v1, 0x1

    sub-int/2addr v2, v0

    .line 4
    iget v3, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->curByte:I

    and-int/2addr v2, v3

    const/4 v4, 0x0

    if-ne v2, v1, :cond_1b

    const/4 v1, 0x1

    goto :goto_1c

    :cond_1b
    const/4 v1, 0x0

    :goto_1c
    const/4 v2, -0x1

    if-eq v3, v2, :cond_26

    .line 5
    iget v3, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nextByte:I

    if-ne v3, v2, :cond_27

    if-nez v1, :cond_26

    goto :goto_27

    :cond_26
    const/4 v0, 0x0

    :cond_27
    :goto_27
    return v0
.end method

.method public peakNextBits(I)I
    .registers 10
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    const/16 v0, 0x8

    if-gt p1, v0, :cond_48

    .line 1
    iget v1, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    if-ne v1, v0, :cond_11

    .line 2
    invoke-direct {p0}, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->advance()V

    .line 3
    iget v1, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->curByte:I

    const/4 v2, -0x1

    if-ne v1, v2, :cond_11

    return v2

    .line 4
    :cond_11
    iget v1, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    rsub-int/lit8 v2, v1, 0x10

    new-array v2, v2, [I

    const/4 v3, 0x0

    const/4 v4, 0x0

    :goto_19
    if-ge v1, v0, :cond_2a

    add-int/lit8 v5, v4, 0x1

    .line 5
    iget v6, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->curByte:I

    rsub-int/lit8 v7, v1, 0x7

    shr-int/2addr v6, v7

    and-int/lit8 v6, v6, 0x1

    aput v6, v2, v4

    add-int/lit8 v1, v1, 0x1

    move v4, v5

    goto :goto_19

    :cond_2a
    const/4 v1, 0x0

    :goto_2b
    if-ge v1, v0, :cond_3c

    add-int/lit8 v5, v4, 0x1

    .line 6
    iget v6, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nextByte:I

    rsub-int/lit8 v7, v1, 0x7

    shr-int/2addr v6, v7

    and-int/lit8 v6, v6, 0x1

    aput v6, v2, v4

    add-int/lit8 v1, v1, 0x1

    move v4, v5

    goto :goto_2b

    :cond_3c
    const/4 v0, 0x0

    :goto_3d
    if-ge v3, p1, :cond_47

    shl-int/lit8 v0, v0, 0x1

    .line 7
    aget v1, v2, v3

    or-int/2addr v0, v1

    add-int/lit8 v3, v3, 0x1

    goto :goto_3d

    :cond_47
    return v0

    .line 8
    :cond_48
    new-instance p1, Ljava/lang/IllegalArgumentException;

    const-string v0, "N should be less then 8"

    invoke-direct {p1, v0}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw p1
.end method

.method public read1Bit()I
    .registers 4
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    .line 1
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    const/16 v1, 0x8

    if-ne v0, v1, :cond_f

    .line 2
    invoke-direct {p0}, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->advance()V

    .line 3
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->curByte:I

    const/4 v1, -0x1

    if-ne v0, v1, :cond_f

    return v1

    .line 4
    :cond_f
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->curByte:I

    iget v1, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    rsub-int/lit8 v2, v1, 0x7

    shr-int/2addr v0, v2

    and-int/lit8 v0, v0, 0x1

    add-int/lit8 v1, v1, 0x1

    .line 5
    iput v1, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    .line 6
    iget-object v1, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->debugBits:Lcom/googlecode/mp4parser/h264/CharCache;

    if-nez v0, :cond_23

    const/16 v2, 0x30

    goto :goto_25

    :cond_23
    const/16 v2, 0x31

    :goto_25
    invoke-virtual {v1, v2}, Lcom/googlecode/mp4parser/h264/CharCache;->append(C)V

    .line 7
    sget v1, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->bitsRead:I

    add-int/lit8 v1, v1, 0x1

    sput v1, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->bitsRead:I

    return v0
.end method

.method public readByte()I
    .registers 2
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    .line 1
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    if-lez v0, :cond_7

    .line 2
    invoke-direct {p0}, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->advance()V

    .line 3
    :cond_7
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->curByte:I

    .line 4
    invoke-direct {p0}, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->advance()V

    return v0
.end method

.method public readNBit(I)J
    .registers 7
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    const/16 v0, 0x40

    if-gt p1, v0, :cond_15

    const-wide/16 v0, 0x0

    const/4 v2, 0x0

    :goto_7
    if-ge v2, p1, :cond_14

    const/4 v3, 0x1

    shl-long/2addr v0, v3

    .line 1
    invoke-virtual {p0}, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->read1Bit()I

    move-result v3

    int-to-long v3, v3

    or-long/2addr v0, v3

    add-int/lit8 v2, v2, 0x1

    goto :goto_7

    :cond_14
    return-wide v0

    .line 2
    :cond_15
    new-instance p1, Ljava/lang/IllegalArgumentException;

    const-string v0, "Can not readByte more then 64 bit"

    invoke-direct {p1, v0}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw p1
.end method

.method public readRemainingByte()J
    .registers 3
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    rsub-int/lit8 v0, v0, 0x8

    invoke-virtual {p0, v0}, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->readNBit(I)J

    move-result-wide v0

    return-wide v0
.end method