HeifSupportStatus.smali

.class public Lcom/facebook/common/heif/HeifSupportStatus;
.super Ljava/lang/Object;
.source "SourceFile"


# static fields
.field public static final HEIF_HEADER_LENGTH:I

.field private static final HEIF_HEADER_PREFIX:Ljava/lang/String; = "ftyp"

.field private static final HEIF_HEADER_SUFFIXES:[Ljava/lang/String;

.field private static sHeifBitmapFactory:Lcom/facebook/common/heif/HeifBitmapFactory;

.field private static sHeifLibraryChecked:Z


# direct methods
.method static constructor <clinit>()V
    .registers 6

    const-string v0, "mif1"

    const-string v1, "msf1"

    const-string v2, "heic"

    const-string v3, "heix"

    const-string v4, "hevc"

    const-string v5, "hevx"

    .line 16
    filled-new-array/range {v0 .. v5}, [Ljava/lang/String;

    move-result-object v0

    sput-object v0, Lcom/facebook/common/heif/HeifSupportStatus;->HEIF_HEADER_SUFFIXES:[Ljava/lang/String;

    .line 18
    new-instance v0, Ljava/lang/StringBuilder;

    const-string v1, "ftyp"

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

    sget-object v1, Lcom/facebook/common/heif/HeifSupportStatus;->HEIF_HEADER_SUFFIXES:[Ljava/lang/String;

    const/4 v2, 0x0

    aget-object v1, v1, v2

    invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v0

    .line 19
    invoke-static {v0}, Lcom/facebook/common/heif/HeifSupportStatus;->asciiBytes(Ljava/lang/String;)[B

    move-result-object v0

    array-length v0, v0

    sput v0, Lcom/facebook/common/heif/HeifSupportStatus;->HEIF_HEADER_LENGTH:I

    .line 21
    sput-boolean v2, Lcom/facebook/common/heif/HeifSupportStatus;->sHeifLibraryChecked:Z

    const/4 v0, 0x0

    .line 22
    sput-object v0, Lcom/facebook/common/heif/HeifSupportStatus;->sHeifBitmapFactory:Lcom/facebook/common/heif/HeifBitmapFactory;

    return-void
.end method

.method public constructor <init>()V
    .registers 1

    .line 12
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method private static asciiBytes(Ljava/lang/String;)[B
    .registers 3

    .line 25
    invoke-static {p0}, Lcom/facebook/common/internal/Preconditions;->checkNotNull(Ljava/lang/Object;)Ljava/lang/Object;

    :try_start_3
    const-string v0, "ASCII"

    .line 27
    invoke-virtual {p0, v0}, Ljava/lang/String;->getBytes(Ljava/lang/String;)[B

    move-result-object p0
    :try_end_9
    .catch Ljava/io/UnsupportedEncodingException; {:try_start_3 .. :try_end_9} :catch_a

    return-object p0

    :catch_a
    move-exception p0

    .line 30
    new-instance v0, Ljava/lang/RuntimeException;

    const-string v1, "ASCII not found!"

    invoke-direct {v0, v1, p0}, Ljava/lang/RuntimeException;-><init>(Ljava/lang/String;Ljava/lang/Throwable;)V

    throw v0
.end method

.method public static indexOfPattern([BII[BI)I
    .registers 13

    .line 88
    invoke-static {p0}, Lcom/facebook/common/internal/Preconditions;->checkNotNull(Ljava/lang/Object;)Ljava/lang/Object;

    .line 89
    invoke-static {p3}, Lcom/facebook/common/internal/Preconditions;->checkNotNull(Ljava/lang/Object;)Ljava/lang/Object;

    const/4 v0, -0x1

    if-le p4, p1, :cond_a

    return v0

    :cond_a
    const/4 v1, 0x0

    .line 94
    aget-byte v2, p3, v1

    sub-int/2addr p1, p4

    :goto_e
    if-gt v1, p1, :cond_3c

    add-int v3, p2, v1

    .line 99
    aget-byte v3, p0, v3

    const/4 v4, 0x1

    if-eq v3, v2, :cond_20

    :cond_17
    add-int/2addr v1, v4

    if-gt v1, p1, :cond_20

    add-int v3, p2, v1

    .line 100
    aget-byte v3, p0, v3

    if-ne v3, v2, :cond_17

    :cond_20
    if-gt v1, p1, :cond_39

    add-int/lit8 v3, v1, 0x1

    add-int v5, v3, p4

    sub-int/2addr v5, v4

    :goto_27
    if-ge v3, v5, :cond_36

    add-int v6, p2, v3

    .line 108
    aget-byte v6, p0, v6

    aget-byte v7, p3, v4

    if-ne v6, v7, :cond_36

    add-int/lit8 v3, v3, 0x1

    add-int/lit8 v4, v4, 0x1

    goto :goto_27

    :cond_36
    if-ne v3, v5, :cond_39

    return v1

    :cond_39
    add-int/lit8 v1, v1, 0x1

    goto :goto_e

    :cond_3c
    return v0
.end method

.method public static isHeifHeader([BII)Z
    .registers 9

    .line 57
    sget v0, Lcom/facebook/common/heif/HeifSupportStatus;->HEIF_HEADER_LENGTH:I

    const/4 v1, 0x0

    if-ge p2, v0, :cond_6

    return v1

    :cond_6
    add-int/lit8 p2, p1, 0x3

    .line 61
    aget-byte p2, p0, p2

    const/16 v0, 0x8

    if-ge p2, v0, :cond_f

    return v1

    .line 66
    :cond_f
    sget-object p2, Lcom/facebook/common/heif/HeifSupportStatus;->HEIF_HEADER_SUFFIXES:[Ljava/lang/String;

    array-length v0, p2

    const/4 v2, 0x0

    :goto_13
    if-ge v2, v0, :cond_34

    aget-object v3, p2, v2

    .line 67
    array-length v4, p0

    sub-int/2addr v4, p1

    invoke-static {v3}, Ljava/lang/String;->valueOf(Ljava/lang/Object;)Ljava/lang/String;

    move-result-object v3

    const-string v5, "ftyp"

    invoke-virtual {v5, v3}, Ljava/lang/String;->concat(Ljava/lang/String;)Ljava/lang/String;

    move-result-object v3

    .line 72
    invoke-static {v3}, Lcom/facebook/common/heif/HeifSupportStatus;->asciiBytes(Ljava/lang/String;)[B

    move-result-object v3

    sget v5, Lcom/facebook/common/heif/HeifSupportStatus;->HEIF_HEADER_LENGTH:I

    .line 68
    invoke-static {p0, v4, p1, v3, v5}, Lcom/facebook/common/heif/HeifSupportStatus;->indexOfPattern([BII[BI)I

    move-result v3

    if-ltz v3, :cond_31

    const/4 p0, 0x1

    return p0

    :cond_31
    add-int/lit8 v2, v2, 0x1

    goto :goto_13

    :cond_34
    return v1
.end method

.method public static loadHeifBitmapFactoryIfExists()Lcom/facebook/common/heif/HeifBitmapFactory;
    .registers 2

    .line 35
    sget-boolean v0, Lcom/facebook/common/heif/HeifSupportStatus;->sHeifLibraryChecked:Z

    if-eqz v0, :cond_7

    .line 36
    sget-object v0, Lcom/facebook/common/heif/HeifSupportStatus;->sHeifBitmapFactory:Lcom/facebook/common/heif/HeifBitmapFactory;

    return-object v0

    :cond_7
    const/4 v0, 0x0

    :try_start_8
    const-string v1, "com.facebook.support.HeifBitmapFactoryImpl"

    .line 41
    invoke-static {v1}, Ljava/lang/Class;->forName(Ljava/lang/String;)Ljava/lang/Class;

    move-result-object v1

    .line 42
    invoke-virtual {v1}, Ljava/lang/Class;->newInstance()Ljava/lang/Object;

    move-result-object v1

    check-cast v1, Lcom/facebook/common/heif/HeifBitmapFactory;
    :try_end_14
    .catchall {:try_start_8 .. :try_end_14} :catchall_16

    move-object v0, v1

    goto :goto_17

    :catchall_16
    nop

    :goto_17
    const/4 v1, 0x1

    .line 46
    sput-boolean v1, Lcom/facebook/common/heif/HeifSupportStatus;->sHeifLibraryChecked:Z

    .line 47
    sget-object v1, Lcom/facebook/common/heif/HeifSupportStatus;->sHeifBitmapFactory:Lcom/facebook/common/heif/HeifBitmapFactory;

    if-nez v1, :cond_20

    .line 48
    sput-object v0, Lcom/facebook/common/heif/HeifSupportStatus;->sHeifBitmapFactory:Lcom/facebook/common/heif/HeifBitmapFactory;

    :cond_20
    return-object v0
.end method