Decoder.smali

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


# instance fields
.field private final rsDecoder:Lcom/google/zxing/common/reedsolomon/ReedSolomonDecoder;


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

    return-void
.end method

.method public constructor <init>()V
    .registers 3

    .line 40
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 41
    new-instance v0, Lcom/google/zxing/common/reedsolomon/ReedSolomonDecoder;

    sget-object v1, Lcom/google/zxing/common/reedsolomon/GenericGF;->QR_CODE_FIELD_256:Lcom/google/zxing/common/reedsolomon/GenericGF;

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

    iput-object v0, p0, Lcom/google/zxing/qrcode/decoder/Decoder;->rsDecoder:Lcom/google/zxing/common/reedsolomon/ReedSolomonDecoder;

    .line 42
    return-void
.end method

.method private correctErrors([BI)V
    .registers 8
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/google/zxing/ChecksumException;
        }
    .end annotation

    .line 171
    array-length v0, p1

    .line 173
    new-array v1, v0, [I

    .line 174
    const/4 v2, 0x0

    const/4 v3, 0x0

    :goto_5
    if-ge v3, v0, :cond_10

    .line 175
    aget-byte v4, p1, v3

    and-int/lit16 v4, v4, 0xff

    aput v4, v1, v3

    .line 174
    add-int/lit8 v3, v3, 0x1

    goto :goto_5

    .line 178
    :cond_10
    :try_start_10
    iget-object v0, p0, Lcom/google/zxing/qrcode/decoder/Decoder;->rsDecoder:Lcom/google/zxing/common/reedsolomon/ReedSolomonDecoder;

    array-length v3, p1

    sub-int/2addr v3, p2

    invoke-virtual {v0, v1, v3}, Lcom/google/zxing/common/reedsolomon/ReedSolomonDecoder;->decode([II)V
    :try_end_17
    .catch Lcom/google/zxing/common/reedsolomon/ReedSolomonException; {:try_start_10 .. :try_end_17} :catch_24

    .line 181
    nop

    .line 184
    nop

    :goto_19
    if-ge v2, p2, :cond_23

    .line 185
    aget v0, v1, v2

    int-to-byte v0, v0

    aput-byte v0, p1, v2

    .line 184
    add-int/lit8 v2, v2, 0x1

    goto :goto_19

    .line 187
    :cond_23
    return-void

    .line 179
    :catch_24
    move-exception p1

    .line 180
    invoke-static {}, Lcom/google/zxing/ChecksumException;->getChecksumInstance()Lcom/google/zxing/ChecksumException;

    move-result-object p1

    goto :goto_2b

    :goto_2a
    throw p1

    :goto_2b
    goto :goto_2a
.end method

.method private decode(Lcom/google/zxing/qrcode/decoder/BitMatrixParser;Ljava/util/Map;)Lcom/google/zxing/common/DecoderResult;
    .registers 18
    .param p1, "parser"    # Lcom/google/zxing/qrcode/decoder/BitMatrixParser;
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "(",
            "Lcom/google/zxing/qrcode/decoder/BitMatrixParser;",
            "Ljava/util/Map<",
            "Lcom/google/zxing/DecodeHintType;",
            "*>;)",
            "Lcom/google/zxing/common/DecoderResult;"
        }
    .end annotation

    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/google/zxing/FormatException;,
            Lcom/google/zxing/ChecksumException;
        }
    .end annotation

    .line 132
    .local p2, "hints":Ljava/util/Map;, "Ljava/util/Map<Lcom/google/zxing/DecodeHintType;*>;"
    invoke-virtual/range {p1 .. p1}, Lcom/google/zxing/qrcode/decoder/BitMatrixParser;->readVersion()Lcom/google/zxing/qrcode/decoder/Version;

    move-result-object v0

    .line 133
    .local v0, "version":Lcom/google/zxing/qrcode/decoder/Version;
    invoke-virtual/range {p1 .. p1}, Lcom/google/zxing/qrcode/decoder/BitMatrixParser;->readFormatInformation()Lcom/google/zxing/qrcode/decoder/FormatInformation;

    move-result-object v1

    invoke-virtual {v1}, Lcom/google/zxing/qrcode/decoder/FormatInformation;->getErrorCorrectionLevel()Lcom/google/zxing/qrcode/decoder/ErrorCorrectionLevel;

    move-result-object v1

    .line 136
    .local v1, "ecLevel":Lcom/google/zxing/qrcode/decoder/ErrorCorrectionLevel;
    invoke-virtual/range {p1 .. p1}, Lcom/google/zxing/qrcode/decoder/BitMatrixParser;->readCodewords()[B

    move-result-object v2

    .line 138
    invoke-static {v2, v0, v1}, Lcom/google/zxing/qrcode/decoder/DataBlock;->getDataBlocks([BLcom/google/zxing/qrcode/decoder/Version;Lcom/google/zxing/qrcode/decoder/ErrorCorrectionLevel;)[Lcom/google/zxing/qrcode/decoder/DataBlock;

    move-result-object v2

    .line 141
    .local v2, "dataBlocks":[Lcom/google/zxing/qrcode/decoder/DataBlock;
    const/4 v3, 0x0

    .line 142
    .local v3, "totalBytes":I
    array-length v4, v2

    const/4 v5, 0x0

    const/4 v6, 0x0

    :goto_18
    if-ge v6, v4, :cond_24

    aget-object v7, v2, v6

    .line 143
    .local v7, "dataBlock":Lcom/google/zxing/qrcode/decoder/DataBlock;
    invoke-virtual {v7}, Lcom/google/zxing/qrcode/decoder/DataBlock;->getNumDataCodewords()I

    move-result v8

    add-int/2addr v3, v8

    .line 142
    .end local v7    # "dataBlock":Lcom/google/zxing/qrcode/decoder/DataBlock;
    add-int/lit8 v6, v6, 0x1

    goto :goto_18

    .line 145
    :cond_24
    new-array v4, v3, [B

    .line 146
    .local v4, "resultBytes":[B
    const/4 v6, 0x0

    .line 149
    .local v6, "resultOffset":I
    array-length v7, v2

    const/4 v8, 0x0

    :goto_29
    if-ge v5, v7, :cond_4a

    aget-object v9, v2, v5

    .line 150
    .local v8, "dataBlock":Lcom/google/zxing/qrcode/decoder/DataBlock;
    move-object v8, v9

    invoke-virtual {v9}, Lcom/google/zxing/qrcode/decoder/DataBlock;->getCodewords()[B

    move-result-object v9

    .line 151
    .local v9, "codewordBytes":[B
    invoke-virtual {v8}, Lcom/google/zxing/qrcode/decoder/DataBlock;->getNumDataCodewords()I

    move-result v10

    .line 152
    .local v10, "numDataCodewords":I
    move-object v11, p0

    invoke-direct {p0, v9, v10}, Lcom/google/zxing/qrcode/decoder/Decoder;->correctErrors([BI)V

    .line 153
    const/4 v12, 0x0

    .local v12, "i":I
    :goto_3b
    if-ge v12, v10, :cond_47

    .line 154
    add-int/lit8 v13, v6, 0x1

    .end local v6    # "resultOffset":I
    .local v13, "resultOffset":I
    aget-byte v14, v9, v12

    aput-byte v14, v4, v6

    .line 153
    add-int/lit8 v12, v12, 0x1

    move v6, v13

    goto :goto_3b

    .line 149
    .end local v8    # "dataBlock":Lcom/google/zxing/qrcode/decoder/DataBlock;
    .end local v9    # "codewordBytes":[B
    .end local v10    # "numDataCodewords":I
    .end local v12    # "i":I
    .end local v13    # "resultOffset":I
    .restart local v6    # "resultOffset":I
    :cond_47
    add-int/lit8 v5, v5, 0x1

    goto :goto_29

    .line 159
    :cond_4a
    move-object v11, p0

    move-object/from16 v5, p2

    invoke-static {v4, v0, v1, v5}, Lcom/google/zxing/qrcode/decoder/DecodedBitStreamParser;->decode([BLcom/google/zxing/qrcode/decoder/Version;Lcom/google/zxing/qrcode/decoder/ErrorCorrectionLevel;Ljava/util/Map;)Lcom/google/zxing/common/DecoderResult;

    move-result-object v7

    return-object v7
.end method


# virtual methods
.method public decode(Lcom/google/zxing/common/BitMatrix;)Lcom/google/zxing/common/DecoderResult;
    .registers 3
    .param p1, "bits"    # Lcom/google/zxing/common/BitMatrix;
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/google/zxing/ChecksumException;,
            Lcom/google/zxing/FormatException;
        }
    .end annotation

    .line 64
    const/4 v0, 0x0

    invoke-virtual {p0, p1, v0}, Lcom/google/zxing/qrcode/decoder/Decoder;->decode(Lcom/google/zxing/common/BitMatrix;Ljava/util/Map;)Lcom/google/zxing/common/DecoderResult;

    move-result-object v0

    return-object v0
.end method

.method public decode(Lcom/google/zxing/common/BitMatrix;Ljava/util/Map;)Lcom/google/zxing/common/DecoderResult;
    .registers 10
    .param p1, "bits"    # Lcom/google/zxing/common/BitMatrix;
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "(",
            "Lcom/google/zxing/common/BitMatrix;",
            "Ljava/util/Map<",
            "Lcom/google/zxing/DecodeHintType;",
            "*>;)",
            "Lcom/google/zxing/common/DecoderResult;"
        }
    .end annotation

    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/google/zxing/FormatException;,
            Lcom/google/zxing/ChecksumException;
        }
    .end annotation

    .line 80
    .local p2, "hints":Ljava/util/Map;, "Ljava/util/Map<Lcom/google/zxing/DecodeHintType;*>;"
    new-instance v0, Lcom/google/zxing/qrcode/decoder/BitMatrixParser;

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

    .line 81
    .local v0, "parser":Lcom/google/zxing/qrcode/decoder/BitMatrixParser;
    const/4 v1, 0x0

    .line 82
    .local v1, "fe":Lcom/google/zxing/FormatException;
    const/4 v2, 0x0

    .line 84
    .local v2, "ce":Lcom/google/zxing/ChecksumException;
    const/4 v3, 0x0

    :try_start_8
    invoke-direct {p0, v0, p2}, Lcom/google/zxing/qrcode/decoder/Decoder;->decode(Lcom/google/zxing/qrcode/decoder/BitMatrixParser;Ljava/util/Map;)Lcom/google/zxing/common/DecoderResult;

    move-result-object v3
    :try_end_c
    .catch Lcom/google/zxing/FormatException; {:try_start_8 .. :try_end_c} :catch_10
    .catch Lcom/google/zxing/ChecksumException; {:try_start_8 .. :try_end_c} :catch_d

    return-object v3

    .line 88
    :catch_d
    move-exception v4

    .local v3, "e":Lcom/google/zxing/ChecksumException;
    move-object v2, v4

    goto :goto_13

    .line 86
    .end local v3    # "e":Lcom/google/zxing/ChecksumException;
    :catch_10
    move-exception v4

    .local v3, "e":Lcom/google/zxing/FormatException;
    move-object v1, v4

    .line 89
    .end local v3    # "e":Lcom/google/zxing/FormatException;
    nop

    .line 94
    :goto_13
    :try_start_13
    invoke-virtual {v0}, Lcom/google/zxing/qrcode/decoder/BitMatrixParser;->remask()V

    .line 97
    const/4 v4, 0x1

    invoke-virtual {v0, v4}, Lcom/google/zxing/qrcode/decoder/BitMatrixParser;->setMirror(Z)V

    .line 100
    invoke-virtual {v0}, Lcom/google/zxing/qrcode/decoder/BitMatrixParser;->readVersion()Lcom/google/zxing/qrcode/decoder/Version;

    .line 103
    invoke-virtual {v0}, Lcom/google/zxing/qrcode/decoder/BitMatrixParser;->readFormatInformation()Lcom/google/zxing/qrcode/decoder/FormatInformation;

    .line 112
    invoke-virtual {v0}, Lcom/google/zxing/qrcode/decoder/BitMatrixParser;->mirror()V

    .line 114
    invoke-direct {p0, v0, p2}, Lcom/google/zxing/qrcode/decoder/Decoder;->decode(Lcom/google/zxing/qrcode/decoder/BitMatrixParser;Ljava/util/Map;)Lcom/google/zxing/common/DecoderResult;

    move-result-object v5

    .line 117
    .local v3, "result":Lcom/google/zxing/common/DecoderResult;
    move-object v3, v5

    new-instance v6, Lcom/google/zxing/qrcode/decoder/QRCodeDecoderMetaData;

    invoke-direct {v6, v4}, Lcom/google/zxing/qrcode/decoder/QRCodeDecoderMetaData;-><init>(Z)V

    invoke-virtual {v5, v6}, Lcom/google/zxing/common/DecoderResult;->setOther(Ljava/lang/Object;)V
    :try_end_30
    .catch Lcom/google/zxing/FormatException; {:try_start_13 .. :try_end_30} :catch_33
    .catch Lcom/google/zxing/ChecksumException; {:try_start_13 .. :try_end_30} :catch_31

    .line 119
    return-object v3

    .line 121
    .end local v3    # "result":Lcom/google/zxing/common/DecoderResult;
    :catch_31
    move-exception v4

    goto :goto_34

    :catch_33
    move-exception v4

    .line 123
    .local v3, "e":Lcom/google/zxing/ReaderException;
    :goto_34
    if-eqz v1, :cond_37

    .line 124
    throw v1

    .line 126
    :cond_37
    throw v2
.end method

.method public decode([[Z)Lcom/google/zxing/common/DecoderResult;
    .registers 3
    .param p1, "image"    # [[Z
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/google/zxing/ChecksumException;,
            Lcom/google/zxing/FormatException;
        }
    .end annotation

    .line 45
    const/4 v0, 0x0

    invoke-virtual {p0, p1, v0}, Lcom/google/zxing/qrcode/decoder/Decoder;->decode([[ZLjava/util/Map;)Lcom/google/zxing/common/DecoderResult;

    move-result-object v0

    return-object v0
.end method

.method public decode([[ZLjava/util/Map;)Lcom/google/zxing/common/DecoderResult;
    .registers 4
    .param p1, "image"    # [[Z
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "([[Z",
            "Ljava/util/Map<",
            "Lcom/google/zxing/DecodeHintType;",
            "*>;)",
            "Lcom/google/zxing/common/DecoderResult;"
        }
    .end annotation

    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/google/zxing/ChecksumException;,
            Lcom/google/zxing/FormatException;
        }
    .end annotation

    .line 60
    .local p2, "hints":Ljava/util/Map;, "Ljava/util/Map<Lcom/google/zxing/DecodeHintType;*>;"
    invoke-static {p1}, Lcom/google/zxing/common/BitMatrix;->parse([[Z)Lcom/google/zxing/common/BitMatrix;

    move-result-object v0

    invoke-virtual {p0, v0, p2}, Lcom/google/zxing/qrcode/decoder/Decoder;->decode(Lcom/google/zxing/common/BitMatrix;Ljava/util/Map;)Lcom/google/zxing/common/DecoderResult;

    move-result-object v0

    return-object v0
.end method