BitstreamReader.smali

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


# static fields
.field protected static bitsRead:I


# instance fields
.field private curByte:I

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

.field private is:Ljava/io/InputStream;

.field nBit:I

.field private nextByte:I


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

    return-void
.end method

.method public constructor <init>(Ljava/io/InputStream;)V
    .registers 4
    .param p1, "is"    # Ljava/io/InputStream;
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    .line 42
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 40
    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 43
    iput-object p1, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->is:Ljava/io/InputStream;

    .line 44
    invoke-virtual {p1}, Ljava/io/InputStream;->read()I

    move-result v0

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

    .line 45
    invoke-virtual {p1}, Ljava/io/InputStream;->read()I

    move-result v0

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

    .line 46
    return-void
.end method

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

    .line 93
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nextByte:I

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

    .line 94
    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

    .line 95
    const/4 v0, 0x0

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

    .line 96
    return-void
.end method


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

    .line 193
    return-void
.end method

.method public getBitPosition()J
    .registers 3

    .line 132
    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 v0, v1

    int-to-long v0, v0

    return-wide v0
.end method

.method public getCurBit()I
    .registers 2

    .line 196
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    return v0
.end method

.method public isByteAligned()Z
    .registers 2

    .line 184
    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

    return v0

    :cond_8
    const/4 v0, 0x0

    return v0
.end method

.method public moreRBSPData()Z
    .registers 8
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    .line 121
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    const/16 v1, 0x8

    if-ne v0, v1, :cond_9

    .line 122
    invoke-direct {p0}, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->advance()V

    .line 124
    :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

    .line 125
    .local v1, "tail":I
    shl-int/lit8 v2, v1, 0x1

    sub-int/2addr v2, v0

    .line 126
    .local v2, "mask":I
    iget v3, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->curByte:I

    and-int/2addr v3, v2

    const/4 v4, 0x0

    if-ne v3, v1, :cond_1b

    const/4 v3, 0x1

    goto :goto_1c

    :cond_1b
    const/4 v3, 0x0

    .line 128
    .local v3, "hasTail":Z
    :goto_1c
    iget v5, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->curByte:I

    const/4 v6, -0x1

    if-eq v5, v6, :cond_27

    iget v5, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nextByte:I

    if-ne v5, v6, :cond_28

    if-eqz v3, :cond_28

    :cond_27
    const/4 v0, 0x0

    :cond_28
    return v0
.end method

.method public peakNextBits(I)I
    .registers 9
    .param p1, "n"    # I
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    .line 150
    const/16 v0, 0x8

    if-gt p1, v0, :cond_4a

    .line 152
    iget v1, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    if-ne v1, v0, :cond_11

    .line 153
    invoke-direct {p0}, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->advance()V

    .line 154
    iget v1, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->curByte:I

    const/4 v2, -0x1

    if-ne v1, v2, :cond_11

    .line 155
    return v2

    .line 158
    :cond_11
    iget v1, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    rsub-int/lit8 v1, v1, 0x10

    new-array v1, v1, [I

    .line 160
    .local v1, "bits":[I
    const/4 v2, 0x0

    .line 161
    .local v2, "cnt":I
    iget v3, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    .local v3, "i":I
    :goto_1a
    if-lt v3, v0, :cond_3b

    .line 165
    .end local v3    # "i":I
    const/4 v3, 0x0

    .restart local v3    # "i":I
    :goto_1d
    if-lt v3, v0, :cond_2c

    .line 169
    .end local v3    # "i":I
    const/4 v0, 0x0

    .line 170
    .local v0, "result":I
    const/4 v3, 0x0

    .restart local v3    # "i":I
    :goto_21
    if-lt v3, p1, :cond_24

    .line 175
    .end local v3    # "i":I
    return v0

    .line 171
    .restart local v3    # "i":I
    :cond_24
    shl-int/lit8 v0, v0, 0x1

    .line 172
    aget v4, v1, v3

    or-int/2addr v0, v4

    .line 170
    add-int/lit8 v3, v3, 0x1

    goto :goto_21

    .line 166
    .end local v0    # "result":I
    :cond_2c
    add-int/lit8 v4, v2, 0x1

    .end local v2    # "cnt":I
    .local v4, "cnt":I
    iget v5, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nextByte:I

    rsub-int/lit8 v6, v3, 0x7

    shr-int/2addr v5, v6

    and-int/lit8 v5, v5, 0x1

    aput v5, v1, v2

    .line 165
    add-int/lit8 v3, v3, 0x1

    move v2, v4

    goto :goto_1d

    .line 162
    .end local v4    # "cnt":I
    .restart local v2    # "cnt":I
    :cond_3b
    add-int/lit8 v4, v2, 0x1

    .end local v2    # "cnt":I
    .restart local v4    # "cnt":I
    iget v5, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->curByte:I

    rsub-int/lit8 v6, v3, 0x7

    shr-int/2addr v5, v6

    and-int/lit8 v5, v5, 0x1

    aput v5, v1, v2

    .line 161
    add-int/lit8 v3, v3, 0x1

    move v2, v4

    goto :goto_1a

    .line 151
    .end local v1    # "bits":[I
    .end local v3    # "i":I
    .end local v4    # "cnt":I
    :cond_4a
    new-instance v0, Ljava/lang/IllegalArgumentException;

    const-string v1, "N should be less then 8"

    invoke-direct {v0, v1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    goto :goto_53

    :goto_52
    throw v0

    :goto_53
    goto :goto_52
.end method

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

    .line 58
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    const/16 v1, 0x8

    if-ne v0, v1, :cond_f

    .line 59
    invoke-direct {p0}, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->advance()V

    .line 60
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->curByte:I

    const/4 v1, -0x1

    if-ne v0, v1, :cond_f

    .line 61
    return v1

    .line 64
    :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

    .line 65
    .local v0, "res":I
    add-int/lit8 v1, v1, 0x1

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

    .line 67
    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 68
    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

    .line 70
    return v0
.end method

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

    .line 49
    invoke-virtual {p0}, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->read1Bit()I

    move-result v0

    const/4 v1, 0x1

    if-ne v0, v1, :cond_8

    return v1

    :cond_8
    const/4 v0, 0x0

    return v0
.end method

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

    .line 104
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->nBit:I

    if-lez v0, :cond_7

    .line 105
    invoke-direct {p0}, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->advance()V

    .line 108
    :cond_7
    iget v0, p0, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->curByte:I

    .line 110
    .local v0, "res":I
    invoke-direct {p0}, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->advance()V

    .line 112
    return v0
.end method

.method public readNBit(I)J
    .registers 7
    .param p1, "n"    # I
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    .line 79
    const/16 v0, 0x40

    if-gt p1, v0, :cond_15

    .line 82
    const-wide/16 v0, 0x0

    .line 84
    .local v0, "val":J
    const/4 v2, 0x0

    .local v2, "i":I
    :goto_7
    if-lt v2, p1, :cond_a

    .line 89
    .end local v2    # "i":I
    return-wide v0

    .line 85
    .restart local v2    # "i":I
    :cond_a
    const/4 v3, 0x1

    shl-long/2addr v0, v3

    .line 86
    invoke-virtual {p0}, Lcom/googlecode/mp4parser/h264/read/BitstreamReader;->read1Bit()I

    move-result v3

    int-to-long v3, v3

    or-long/2addr v0, v3

    .line 84
    add-int/lit8 v2, v2, 0x1

    goto :goto_7

    .line 80
    .end local v0    # "val":J
    .end local v2    # "i":I
    :cond_15
    new-instance v0, Ljava/lang/IllegalArgumentException;

    const-string v1, "Can not readByte more then 64 bit"

    invoke-direct {v0, v1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    goto :goto_1e

    :goto_1d
    throw v0

    :goto_1e
    goto :goto_1d
.end method

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

    .line 141
    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