.class public final Lcom/google/zxing/pdf417/decoder/Decoder;
.super Ljava/lang/Object;
.source "Decoder.java"


# static fields
.field private static final MAX_EC_CODEWORDS:I = 0x200

.field private static final MAX_ERRORS:I = 0x3


# instance fields
.field private final errorCorrection:Lcom/google/zxing/pdf417/decoder/ec/ErrorCorrection;


# direct methods
.method public constructor <init>()V
    .locals 1

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

    .line 2
    new-instance v0, Lcom/google/zxing/pdf417/decoder/ec/ErrorCorrection;

    invoke-direct {v0}, Lcom/google/zxing/pdf417/decoder/ec/ErrorCorrection;-><init>()V

    iput-object v0, p0, Lcom/google/zxing/pdf417/decoder/Decoder;->errorCorrection:Lcom/google/zxing/pdf417/decoder/ec/ErrorCorrection;

    return-void
.end method

.method private correctErrors([I[II)V
    .locals 2
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/google/zxing/ChecksumException;
        }
    .end annotation

    .line 1
    array-length v0, p2

    div-int/lit8 v1, p3, 0x2

    add-int/lit8 v1, v1, 0x3

    if-gt v0, v1, :cond_0

    if-ltz p3, :cond_0

    const/16 v0, 0x200

    if-gt p3, v0, :cond_0

    .line 2
    iget-object v0, p0, Lcom/google/zxing/pdf417/decoder/Decoder;->errorCorrection:Lcom/google/zxing/pdf417/decoder/ec/ErrorCorrection;

    invoke-virtual {v0, p1, p3, p2}, Lcom/google/zxing/pdf417/decoder/ec/ErrorCorrection;->decode([II[I)V

    return-void

    .line 3
    :cond_0
    invoke-static {}, Lcom/google/zxing/ChecksumException;->getChecksumInstance()Lcom/google/zxing/ChecksumException;

    move-result-object p1

    throw p1
.end method

.method private static verifyCodewordCount([II)V
    .locals 3
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/google/zxing/FormatException;
        }
    .end annotation

    .line 1
    array-length v0, p0

    const/4 v1, 0x4

    if-lt v0, v1, :cond_3

    const/4 v0, 0x0

    .line 2
    aget v1, p0, v0

    .line 3
    array-length v2, p0

    if-gt v1, v2, :cond_2

    if-nez v1, :cond_1

    .line 4
    array-length v1, p0

    if-ge p1, v1, :cond_0

    .line 5
    array-length v1, p0

    sub-int/2addr v1, p1

    aput v1, p0, v0

    goto :goto_0

    .line 6
    :cond_0
    invoke-static {}, Lcom/google/zxing/FormatException;->getFormatInstance()Lcom/google/zxing/FormatException;

    move-result-object p0

    throw p0

    :cond_1
    :goto_0
    return-void

    .line 7
    :cond_2
    invoke-static {}, Lcom/google/zxing/FormatException;->getFormatInstance()Lcom/google/zxing/FormatException;

    move-result-object p0

    throw p0

    .line 8
    :cond_3
    invoke-static {}, Lcom/google/zxing/FormatException;->getFormatInstance()Lcom/google/zxing/FormatException;

    move-result-object p0

    throw p0
.end method


# virtual methods
.method public decode(Lcom/google/zxing/common/BitMatrix;)Lcom/google/zxing/common/DecoderResult;
    .locals 3
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/google/zxing/FormatException;,
            Lcom/google/zxing/ChecksumException;
        }
    .end annotation

    .line 6
    new-instance v0, Lcom/google/zxing/pdf417/decoder/BitMatrixParser;

    invoke-direct {v0, p1}, Lcom/google/zxing/pdf417/decoder/BitMatrixParser;-><init>(Lcom/google/zxing/common/BitMatrix;)V

    .line 7
    invoke-virtual {v0}, Lcom/google/zxing/pdf417/decoder/BitMatrixParser;->readCodewords()[I

    move-result-object p1

    .line 8
    array-length v1, p1

    if-eqz v1, :cond_0

    .line 9
    invoke-virtual {v0}, Lcom/google/zxing/pdf417/decoder/BitMatrixParser;->getECLevel()I

    move-result v1

    const/4 v2, 0x1

    add-int/2addr v1, v2

    shl-int v1, v2, v1

    .line 10
    invoke-virtual {v0}, Lcom/google/zxing/pdf417/decoder/BitMatrixParser;->getErasures()[I

    move-result-object v0

    .line 11
    invoke-direct {p0, p1, v0, v1}, Lcom/google/zxing/pdf417/decoder/Decoder;->correctErrors([I[II)V

    .line 12
    invoke-static {p1, v1}, Lcom/google/zxing/pdf417/decoder/Decoder;->verifyCodewordCount([II)V

    .line 13
    invoke-static {p1}, Lcom/google/zxing/pdf417/decoder/DecodedBitStreamParser;->decode([I)Lcom/google/zxing/common/DecoderResult;

    move-result-object p1

    return-object p1

    .line 14
    :cond_0
    invoke-static {}, Lcom/google/zxing/FormatException;->getFormatInstance()Lcom/google/zxing/FormatException;

    move-result-object p1

    throw p1
.end method

.method public decode([[Z)Lcom/google/zxing/common/DecoderResult;
    .locals 6
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/google/zxing/FormatException;,
            Lcom/google/zxing/ChecksumException;
        }
    .end annotation

    .line 1
    array-length v0, p1

    .line 2
    new-instance v1, Lcom/google/zxing/common/BitMatrix;

    invoke-direct {v1, v0}, Lcom/google/zxing/common/BitMatrix;-><init>(I)V

    const/4 v2, 0x0

    move v3, v2

    :goto_0
    if-lt v3, v0, :cond_0

    .line 3
    invoke-virtual {p0, v1}, Lcom/google/zxing/pdf417/decoder/Decoder;->decode(Lcom/google/zxing/common/BitMatrix;)Lcom/google/zxing/common/DecoderResult;

    move-result-object p1

    return-object p1

    :cond_0
    move v4, v2

    :goto_1
    if-lt v4, v0, :cond_1

    add-int/lit8 v3, v3, 0x1

    goto :goto_0

    .line 4
    :cond_1
    aget-object v5, p1, v4

    aget-boolean v5, v5, v3

    if-eqz v5, :cond_2

    .line 5
    invoke-virtual {v1, v4, v3}, Lcom/google/zxing/common/BitMatrix;->set(II)V

    :cond_2
    add-int/lit8 v4, v4, 0x1

    goto :goto_1
.end method