JfifUtil.smali

.class public Lcom/facebook/imageutils/JfifUtil;
.super Ljava/lang/Object;
.source "JfifUtil.java"


# static fields
.field public static final APP1_EXIF_MAGIC:I = 0x45786966

.field public static final MARKER_APP1:I = 0xe1

.field public static final MARKER_EOI:I = 0xd9

.field public static final MARKER_ESCAPE_BYTE:I = 0x0

.field public static final MARKER_FIRST_BYTE:I = 0xff

.field public static final MARKER_RST0:I = 0xd0

.field public static final MARKER_RST7:I = 0xd7

.field public static final MARKER_SOFn:I = 0xc0

.field public static final MARKER_SOI:I = 0xd8

.field public static final MARKER_SOS:I = 0xda

.field public static final MARKER_TEM:I = 0x1


# direct methods
.method private constructor <init>()V
    .registers 1

    .line 38
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method public static getAutoRotateAngleFromOrientation(I)I
    .registers 1
    .annotation system Ldalvik/annotation/MethodParameters;
        accessFlags = {
            0x0
        }
        names = {
            "orientation"
        }
    .end annotation

    .line 47
    invoke-static {p0}, Lcom/facebook/imageutils/TiffUtil;->getAutoRotateAngleFromOrientation(I)I

    move-result p0

    return p0
.end method

.method public static getOrientation(Ljava/io/InputStream;)I
    .registers 3
    .annotation system Ldalvik/annotation/MethodParameters;
        accessFlags = {
            0x0
        }
        names = {
            "is"
        }
    .end annotation

    const/4 v0, 0x0

    .line 71
    :try_start_1
    invoke-static {p0}, Lcom/facebook/imageutils/JfifUtil;->moveToAPP1EXIF(Ljava/io/InputStream;)I

    move-result v1

    if-nez v1, :cond_8

    return v0

    .line 75
    :cond_8
    invoke-static {p0, v1}, Lcom/facebook/imageutils/TiffUtil;->readOrientationFromTIFF(Ljava/io/InputStream;I)I

    move-result p0
    :try_end_c
    .catch Ljava/io/IOException; {:try_start_1 .. :try_end_c} :catch_d

    return p0

    :catch_d
    return v0
.end method

.method public static getOrientation([B)I
    .registers 2
    .annotation system Ldalvik/annotation/MethodParameters;
        accessFlags = {
            0x0
        }
        names = {
            "jpeg"
        }
    .end annotation

    .line 58
    new-instance v0, Ljava/io/ByteArrayInputStream;

    invoke-direct {v0, p0}, Ljava/io/ByteArrayInputStream;-><init>([B)V

    invoke-static {v0}, Lcom/facebook/imageutils/JfifUtil;->getOrientation(Ljava/io/InputStream;)I

    move-result p0

    return p0
.end method

.method private static isSOFn(I)Z
    .registers 1
    .annotation system Ldalvik/annotation/MethodParameters;
        accessFlags = {
            0x0
        }
        names = {
            "marker"
        }
    .end annotation

    packed-switch p0, :pswitch_data_8

    :pswitch_3
    const/4 p0, 0x0

    return p0

    :pswitch_5
    const/4 p0, 0x1

    return p0

    nop

    :pswitch_data_8
    .packed-switch 0xc0
        :pswitch_5
        :pswitch_5
        :pswitch_5
        :pswitch_5
        :pswitch_3
        :pswitch_5
        :pswitch_5
        :pswitch_5
        :pswitch_3
        :pswitch_5
        :pswitch_5
        :pswitch_5
        :pswitch_3
        :pswitch_5
        :pswitch_5
        :pswitch_5
    .end packed-switch
.end method

.method private static moveToAPP1EXIF(Ljava/io/InputStream;)I
    .registers 5
    .annotation system Ldalvik/annotation/MethodParameters;
        accessFlags = {
            0x0
        }
        names = {
            "is"
        }
    .end annotation

    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    const/16 v0, 0xe1

    .line 154
    invoke-static {p0, v0}, Lcom/facebook/imageutils/JfifUtil;->moveToMarker(Ljava/io/InputStream;I)Z

    move-result v0

    const/4 v1, 0x0

    if-eqz v0, :cond_27

    const/4 v0, 0x2

    .line 157
    invoke-static {p0, v0, v1}, Lcom/facebook/imageutils/StreamProcessor;->readPackedInt(Ljava/io/InputStream;IZ)I

    move-result v2

    sub-int/2addr v2, v0

    const/4 v3, 0x6

    if-le v2, v3, :cond_27

    const/4 v3, 0x4

    .line 159
    invoke-static {p0, v3, v1}, Lcom/facebook/imageutils/StreamProcessor;->readPackedInt(Ljava/io/InputStream;IZ)I

    move-result v3

    add-int/lit8 v2, v2, -0x4

    .line 161
    invoke-static {p0, v0, v1}, Lcom/facebook/imageutils/StreamProcessor;->readPackedInt(Ljava/io/InputStream;IZ)I

    move-result p0

    add-int/lit8 v2, v2, -0x2

    const v0, 0x45786966

    if-ne v3, v0, :cond_27

    if-nez p0, :cond_27

    return v2

    :cond_27
    return v1
.end method

.method public static moveToMarker(Ljava/io/InputStream;I)Z
    .registers 6
    .annotation system Ldalvik/annotation/MethodParameters;
        accessFlags = {
            0x0,
            0x0
        }
        names = {
            "is",
            "markerToFind"
        }
    .end annotation

    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    .line 90
    invoke-static {p0}, Lcom/facebook/common/internal/Preconditions;->checkNotNull(Ljava/lang/Object;)Ljava/lang/Object;

    :cond_3
    :goto_3
    const/4 v0, 0x1

    const/4 v1, 0x0

    .line 92
    invoke-static {p0, v0, v1}, Lcom/facebook/imageutils/StreamProcessor;->readPackedInt(Ljava/io/InputStream;IZ)I

    move-result v2

    const/16 v3, 0xff

    if-ne v2, v3, :cond_3e

    move v2, v3

    :goto_e
    if-ne v2, v3, :cond_15

    .line 95
    invoke-static {p0, v0, v1}, Lcom/facebook/imageutils/StreamProcessor;->readPackedInt(Ljava/io/InputStream;IZ)I

    move-result v2

    goto :goto_e

    :cond_15
    const/16 v3, 0xc0

    if-ne p1, v3, :cond_20

    .line 98
    invoke-static {v2}, Lcom/facebook/imageutils/JfifUtil;->isSOFn(I)Z

    move-result v3

    if-eqz v3, :cond_20

    return v0

    :cond_20
    if-ne v2, p1, :cond_23

    return v0

    :cond_23
    const/16 v3, 0xd8

    if-eq v2, v3, :cond_3

    if-ne v2, v0, :cond_2a

    goto :goto_3

    :cond_2a
    const/16 v0, 0xd9

    if-eq v2, v0, :cond_3e

    const/16 v0, 0xda

    if-ne v2, v0, :cond_33

    goto :goto_3e

    :cond_33
    const/4 v0, 0x2

    .line 118
    invoke-static {p0, v0, v1}, Lcom/facebook/imageutils/StreamProcessor;->readPackedInt(Ljava/io/InputStream;IZ)I

    move-result v1

    sub-int/2addr v1, v0

    int-to-long v0, v1

    .line 120
    invoke-virtual {p0, v0, v1}, Ljava/io/InputStream;->skip(J)J

    goto :goto_3

    :cond_3e
    :goto_3e
    return v1
.end method