538 lines
9.1 KiB
Smali
538 lines
9.1 KiB
Smali
.class public Lcom/google/zxing/common/GlobalHistogramBinarizer;
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.super Lcom/google/zxing/Binarizer;
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.source "GlobalHistogramBinarizer.java"
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# static fields
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.field private static final EMPTY:[B
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.field private static final LUMINANCE_BITS:I = 0x5
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.field private static final LUMINANCE_BUCKETS:I = 0x20
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.field private static final LUMINANCE_SHIFT:I = 0x3
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# instance fields
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.field private final buckets:[I
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.field private luminances:[B
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# direct methods
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.method public static constructor <clinit>()V
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.locals 1
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const/4 v0, 0x0
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new-array v0, v0, [B
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.line 1
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sput-object v0, Lcom/google/zxing/common/GlobalHistogramBinarizer;->EMPTY:[B
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return-void
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.end method
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.method public constructor <init>(Lcom/google/zxing/LuminanceSource;)V
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.locals 0
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.line 1
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invoke-direct {p0, p1}, Lcom/google/zxing/Binarizer;-><init>(Lcom/google/zxing/LuminanceSource;)V
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.line 2
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sget-object p1, Lcom/google/zxing/common/GlobalHistogramBinarizer;->EMPTY:[B
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iput-object p1, p0, Lcom/google/zxing/common/GlobalHistogramBinarizer;->luminances:[B
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const/16 p1, 0x20
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new-array p1, p1, [I
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.line 3
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iput-object p1, p0, Lcom/google/zxing/common/GlobalHistogramBinarizer;->buckets:[I
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return-void
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.end method
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.method private static estimateBlackPoint([I)I
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.locals 9
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.annotation system Ldalvik/annotation/Throws;
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value = {
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Lcom/google/zxing/NotFoundException;
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}
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.end annotation
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.line 1
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array-length v0, p0
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const/4 v1, 0x0
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move v2, v1
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move v3, v2
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move v4, v3
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move v5, v4
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:goto_0
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if-lt v2, v0, :cond_6
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move v2, v1
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move v3, v2
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:goto_1
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if-lt v1, v0, :cond_4
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if-le v5, v3, :cond_0
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goto :goto_2
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:cond_0
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move v8, v5
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move v5, v3
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move v3, v8
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:goto_2
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sub-int v1, v5, v3
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shr-int/lit8 v0, v0, 0x4
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if-le v1, v0, :cond_3
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add-int/lit8 v0, v5, -0x1
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const/4 v1, -0x1
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move v2, v1
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move v1, v0
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:goto_3
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if-gt v0, v3, :cond_1
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shl-int/lit8 p0, v1, 0x3
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return p0
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:cond_1
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sub-int v6, v0, v3
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mul-int/2addr v6, v6
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sub-int v7, v5, v0
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mul-int/2addr v7, v6
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.line 2
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aget v6, p0, v0
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sub-int v6, v4, v6
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mul-int/2addr v6, v7
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if-le v6, v2, :cond_2
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move v1, v0
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move v2, v6
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:cond_2
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add-int/lit8 v0, v0, -0x1
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goto :goto_3
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.line 3
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:cond_3
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invoke-static {}, Lcom/google/zxing/NotFoundException;->getNotFoundInstance()Lcom/google/zxing/NotFoundException;
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move-result-object p0
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throw p0
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:cond_4
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sub-int v6, v1, v5
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.line 4
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aget v7, p0, v1
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mul-int/2addr v7, v6
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mul-int/2addr v7, v6
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if-le v7, v2, :cond_5
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move v3, v1
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move v2, v7
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:cond_5
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add-int/lit8 v1, v1, 0x1
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goto :goto_1
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.line 5
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:cond_6
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aget v6, p0, v2
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if-le v6, v3, :cond_7
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.line 6
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aget v3, p0, v2
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move v5, v2
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.line 7
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:cond_7
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aget v6, p0, v2
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if-le v6, v4, :cond_8
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.line 8
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aget v4, p0, v2
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:cond_8
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add-int/lit8 v2, v2, 0x1
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goto :goto_0
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.end method
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.method private initArrays(I)V
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.locals 2
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.line 1
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iget-object v0, p0, Lcom/google/zxing/common/GlobalHistogramBinarizer;->luminances:[B
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array-length v0, v0
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if-ge v0, p1, :cond_0
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.line 2
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new-array p1, p1, [B
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iput-object p1, p0, Lcom/google/zxing/common/GlobalHistogramBinarizer;->luminances:[B
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:cond_0
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const/4 p1, 0x0
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move v0, p1
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:goto_0
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const/16 v1, 0x20
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if-lt v0, v1, :cond_1
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return-void
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.line 3
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:cond_1
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iget-object v1, p0, Lcom/google/zxing/common/GlobalHistogramBinarizer;->buckets:[I
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aput p1, v1, v0
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add-int/lit8 v0, v0, 0x1
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goto :goto_0
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.end method
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# virtual methods
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.method public createBinarizer(Lcom/google/zxing/LuminanceSource;)Lcom/google/zxing/Binarizer;
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.locals 1
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.line 1
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new-instance v0, Lcom/google/zxing/common/GlobalHistogramBinarizer;
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invoke-direct {v0, p1}, Lcom/google/zxing/common/GlobalHistogramBinarizer;-><init>(Lcom/google/zxing/LuminanceSource;)V
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return-object v0
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.end method
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.method public getBlackMatrix()Lcom/google/zxing/common/BitMatrix;
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.locals 13
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.annotation system Ldalvik/annotation/Throws;
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value = {
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Lcom/google/zxing/NotFoundException;
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}
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.end annotation
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.line 1
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invoke-virtual {p0}, Lcom/google/zxing/Binarizer;->getLuminanceSource()Lcom/google/zxing/LuminanceSource;
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move-result-object v0
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.line 2
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invoke-virtual {v0}, Lcom/google/zxing/LuminanceSource;->getWidth()I
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move-result v1
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.line 3
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invoke-virtual {v0}, Lcom/google/zxing/LuminanceSource;->getHeight()I
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move-result v2
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.line 4
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new-instance v3, Lcom/google/zxing/common/BitMatrix;
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invoke-direct {v3, v1, v2}, Lcom/google/zxing/common/BitMatrix;-><init>(II)V
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.line 5
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invoke-direct {p0, v1}, Lcom/google/zxing/common/GlobalHistogramBinarizer;->initArrays(I)V
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.line 6
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iget-object v4, p0, Lcom/google/zxing/common/GlobalHistogramBinarizer;->buckets:[I
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const/4 v5, 0x1
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move v6, v5
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:goto_0
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const/4 v7, 0x5
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if-lt v6, v7, :cond_3
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.line 7
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invoke-static {v4}, Lcom/google/zxing/common/GlobalHistogramBinarizer;->estimateBlackPoint([I)I
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move-result v8
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.line 8
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invoke-virtual {v0}, Lcom/google/zxing/LuminanceSource;->getMatrix()[B
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move-result-object v9
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const/4 v10, 0x0
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move v11, v10
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:goto_1
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if-lt v11, v2, :cond_0
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return-object v3
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:cond_0
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mul-int v12, v11, v1
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move v0, v10
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:goto_2
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if-lt v0, v1, :cond_1
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add-int/lit8 v11, v11, 0x1
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goto :goto_1
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:cond_1
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add-int v4, v12, v0
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.line 9
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aget-byte v4, v9, v4
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and-int/lit16 v4, v4, 0xff
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if-ge v4, v8, :cond_2
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.line 10
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invoke-virtual {v3, v0, v11}, Lcom/google/zxing/common/BitMatrix;->set(II)V
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:cond_2
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add-int/lit8 v0, v0, 0x1
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goto :goto_2
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:cond_3
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mul-int v8, v2, v6
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.line 11
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div-int/2addr v8, v7
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.line 12
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iget-object v9, p0, Lcom/google/zxing/common/GlobalHistogramBinarizer;->luminances:[B
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invoke-virtual {v0, v8, v9}, Lcom/google/zxing/LuminanceSource;->getRow(I[B)[B
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move-result-object v8
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shl-int/lit8 v9, v1, 0x2
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.line 13
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div-int/2addr v9, v7
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.line 14
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div-int/lit8 v7, v1, 0x5
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:goto_3
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if-lt v7, v9, :cond_4
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add-int/lit8 v6, v6, 0x1
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goto :goto_0
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.line 15
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:cond_4
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aget-byte v10, v8, v7
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and-int/lit16 v10, v10, 0xff
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shr-int/lit8 v10, v10, 0x3
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.line 16
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aget v11, v4, v10
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add-int/2addr v11, v5
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aput v11, v4, v10
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add-int/lit8 v7, v7, 0x1
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goto :goto_3
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.end method
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.method public getBlackRow(ILcom/google/zxing/common/BitArray;)Lcom/google/zxing/common/BitArray;
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.locals 10
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.annotation system Ldalvik/annotation/Throws;
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value = {
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Lcom/google/zxing/NotFoundException;
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}
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.end annotation
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.line 1
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invoke-virtual {p0}, Lcom/google/zxing/Binarizer;->getLuminanceSource()Lcom/google/zxing/LuminanceSource;
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move-result-object v0
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.line 2
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invoke-virtual {v0}, Lcom/google/zxing/LuminanceSource;->getWidth()I
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move-result v1
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if-eqz p2, :cond_1
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.line 3
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invoke-virtual {p2}, Lcom/google/zxing/common/BitArray;->getSize()I
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move-result v2
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if-ge v2, v1, :cond_0
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goto :goto_0
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.line 4
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:cond_0
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invoke-virtual {p2}, Lcom/google/zxing/common/BitArray;->clear()V
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goto :goto_1
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.line 5
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:cond_1
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:goto_0
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new-instance p2, Lcom/google/zxing/common/BitArray;
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invoke-direct {p2, v1}, Lcom/google/zxing/common/BitArray;-><init>(I)V
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.line 6
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:goto_1
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invoke-direct {p0, v1}, Lcom/google/zxing/common/GlobalHistogramBinarizer;->initArrays(I)V
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.line 7
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iget-object v2, p0, Lcom/google/zxing/common/GlobalHistogramBinarizer;->luminances:[B
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invoke-virtual {v0, p1, v2}, Lcom/google/zxing/LuminanceSource;->getRow(I[B)[B
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move-result-object p1
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.line 8
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iget-object v0, p0, Lcom/google/zxing/common/GlobalHistogramBinarizer;->buckets:[I
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const/4 v2, 0x0
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move v3, v2
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:goto_2
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const/4 v4, 0x1
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if-lt v3, v1, :cond_4
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.line 9
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invoke-static {v0}, Lcom/google/zxing/common/GlobalHistogramBinarizer;->estimateBlackPoint([I)I
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move-result v5
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.line 10
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aget-byte v0, p1, v2
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and-int/lit16 v0, v0, 0xff
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.line 11
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aget-byte v2, p1, v4
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and-int/lit16 v2, v2, 0xff
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move v3, v4
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move v9, v2
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move v2, v0
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move v0, v9
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:goto_3
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add-int/lit8 v6, v1, -0x1
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if-lt v3, v6, :cond_2
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return-object p2
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:cond_2
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add-int/lit8 v6, v3, 0x1
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.line 12
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aget-byte v7, p1, v6
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and-int/lit16 v7, v7, 0xff
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shl-int/lit8 v8, v0, 0x2
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sub-int/2addr v8, v2
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sub-int/2addr v8, v7
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shr-int/lit8 v2, v8, 0x1
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if-ge v2, v5, :cond_3
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.line 13
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invoke-virtual {p2, v3}, Lcom/google/zxing/common/BitArray;->set(I)V
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:cond_3
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move v2, v0
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move v3, v6
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move v0, v7
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goto :goto_3
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.line 14
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:cond_4
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aget-byte v5, p1, v3
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and-int/lit16 v5, v5, 0xff
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shr-int/lit8 v5, v5, 0x3
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.line 15
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aget v6, v0, v5
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add-int/2addr v6, v4
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aput v6, v0, v5
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add-int/lit8 v3, v3, 0x1
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goto :goto_2
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.end method
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