Sniffer.smali

.class final Lcom/google/android/exoplayer2/extractor/mp4/Sniffer;
.super Ljava/lang/Object;
.source "Sniffer.java"


# static fields
.field private static final COMPATIBLE_BRANDS:[I

.field private static final SEARCH_LENGTH:I = 0x1000


# direct methods
.method static constructor <clinit>()V
    .registers 3

    .line 33
    const/16 v0, 0x18

    new-array v0, v0, [I

    .line 34
    const-string v1, "isom"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/4 v2, 0x0

    aput v1, v0, v2

    .line 35
    const-string v1, "iso2"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/4 v2, 0x1

    aput v1, v0, v2

    .line 36
    const-string v1, "iso3"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/4 v2, 0x2

    aput v1, v0, v2

    .line 37
    const-string v1, "iso4"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/4 v2, 0x3

    aput v1, v0, v2

    .line 38
    const-string v1, "iso5"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/4 v2, 0x4

    aput v1, v0, v2

    .line 39
    const-string v1, "iso6"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/4 v2, 0x5

    aput v1, v0, v2

    .line 40
    const-string v1, "avc1"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/4 v2, 0x6

    aput v1, v0, v2

    .line 41
    const-string v1, "hvc1"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/4 v2, 0x7

    aput v1, v0, v2

    .line 42
    const-string v1, "hev1"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0x8

    aput v1, v0, v2

    .line 43
    const-string v1, "mp41"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0x9

    aput v1, v0, v2

    .line 44
    const-string v1, "mp42"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0xa

    aput v1, v0, v2

    .line 45
    const-string v1, "3g2a"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0xb

    aput v1, v0, v2

    .line 46
    const-string v1, "3g2b"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0xc

    aput v1, v0, v2

    .line 47
    const-string v1, "3gr6"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0xd

    aput v1, v0, v2

    .line 48
    const-string v1, "3gs6"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0xe

    aput v1, v0, v2

    .line 49
    const-string v1, "3ge6"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0xf

    aput v1, v0, v2

    .line 50
    const-string v1, "3gg6"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0x10

    aput v1, v0, v2

    .line 51
    const-string v1, "M4V "

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0x11

    aput v1, v0, v2

    .line 52
    const-string v1, "M4A "

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0x12

    aput v1, v0, v2

    .line 53
    const-string v1, "f4v "

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0x13

    aput v1, v0, v2

    .line 54
    const-string v1, "kddi"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0x14

    aput v1, v0, v2

    .line 55
    const-string v1, "M4VP"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0x15

    aput v1, v0, v2

    .line 56
    const-string v1, "qt  "

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0x16

    aput v1, v0, v2

    .line 57
    const-string v1, "MSNV"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/16 v2, 0x17

    aput v1, v0, v2

    sput-object v0, Lcom/google/android/exoplayer2/extractor/mp4/Sniffer;->COMPATIBLE_BRANDS:[I

    .line 33
    return-void
.end method

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

    .line 199
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 201
    return-void
.end method

.method private static isCompatibleBrand(I)Z
    .registers 7
    .param p0, "brand"    # I

    .line 188
    ushr-int/lit8 v0, p0, 0x8

    const-string v1, "3gp"

    invoke-static {v1}, Lcom/google/android/exoplayer2/util/Util;->getIntegerCodeForString(Ljava/lang/String;)I

    move-result v1

    const/4 v2, 0x1

    if-ne v0, v1, :cond_c

    .line 189
    return v2

    .line 191
    :cond_c
    sget-object v0, Lcom/google/android/exoplayer2/extractor/mp4/Sniffer;->COMPATIBLE_BRANDS:[I

    array-length v1, v0

    const/4 v3, 0x0

    const/4 v4, 0x0

    :goto_11
    if-ge v4, v1, :cond_1b

    aget v5, v0, v4

    .line 192
    .local v5, "compatibleBrand":I
    if-ne v5, p0, :cond_18

    .line 193
    return v2

    .line 191
    .end local v5    # "compatibleBrand":I
    :cond_18
    add-int/lit8 v4, v4, 0x1

    goto :goto_11

    .line 196
    :cond_1b
    return v3
.end method

.method public static sniffFragmented(Lcom/google/android/exoplayer2/extractor/ExtractorInput;)Z
    .registers 2
    .param p0, "input"    # Lcom/google/android/exoplayer2/extractor/ExtractorInput;
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;,
            Ljava/lang/InterruptedException;
        }
    .end annotation

    .line 71
    const/4 v0, 0x1

    invoke-static {p0, v0}, Lcom/google/android/exoplayer2/extractor/mp4/Sniffer;->sniffInternal(Lcom/google/android/exoplayer2/extractor/ExtractorInput;Z)Z

    move-result v0

    return v0
.end method

.method private static sniffInternal(Lcom/google/android/exoplayer2/extractor/ExtractorInput;Z)Z
    .registers 24
    .param p0, "input"    # Lcom/google/android/exoplayer2/extractor/ExtractorInput;
    .param p1, "fragmented"    # Z
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;,
            Ljava/lang/InterruptedException;
        }
    .end annotation

    .line 90
    move-object/from16 v0, p0

    invoke-interface/range {p0 .. p0}, Lcom/google/android/exoplayer2/extractor/ExtractorInput;->getLength()J

    move-result-wide v1

    .line 91
    .local v1, "inputLength":J
    const-wide/16 v3, 0x1000

    const-wide/16 v5, -0x1

    cmp-long v7, v1, v5

    if-eqz v7, :cond_14

    cmp-long v7, v1, v3

    if-lez v7, :cond_13

    goto :goto_14

    :cond_13
    move-wide v3, v1

    :cond_14
    :goto_14
    long-to-int v4, v3

    .line 94
    .local v4, "bytesToSearch":I
    new-instance v3, Lcom/google/android/exoplayer2/util/ParsableByteArray;

    const/16 v7, 0x40

    invoke-direct {v3, v7}, Lcom/google/android/exoplayer2/util/ParsableByteArray;-><init>(I)V

    .line 95
    .local v3, "buffer":Lcom/google/android/exoplayer2/util/ParsableByteArray;
    const/4 v7, 0x0

    .line 96
    .local v7, "bytesSearched":I
    const/4 v8, 0x0

    .line 97
    .local v8, "foundGoodFileType":Z
    const/4 v9, 0x0

    .line 98
    .local v9, "isFragmented":Z
    :cond_1f
    :goto_1f
    const/4 v11, 0x0

    if-ge v7, v4, :cond_e7

    .line 100
    const/16 v12, 0x8

    .line 101
    .local v12, "headerSize":I
    invoke-virtual {v3, v12}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->reset(I)V

    .line 102
    iget-object v13, v3, Lcom/google/android/exoplayer2/util/ParsableByteArray;->data:[B

    invoke-interface {v0, v13, v11, v12}, Lcom/google/android/exoplayer2/extractor/ExtractorInput;->peekFully([BII)V

    .line 103
    invoke-virtual {v3}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->readUnsignedInt()J

    move-result-wide v13

    .line 104
    .local v13, "atomSize":J
    invoke-virtual {v3}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->readInt()I

    move-result v15

    .line 105
    .local v15, "atomType":I
    const-wide/16 v16, 0x1

    const/16 v10, 0x8

    cmp-long v18, v13, v16

    if-nez v18, :cond_4d

    .line 107
    const/16 v12, 0x10

    .line 108
    iget-object v11, v3, Lcom/google/android/exoplayer2/util/ParsableByteArray;->data:[B

    invoke-interface {v0, v11, v10, v10}, Lcom/google/android/exoplayer2/extractor/ExtractorInput;->peekFully([BII)V

    .line 109
    const/16 v11, 0x10

    invoke-virtual {v3, v11}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->setLimit(I)V

    .line 110
    invoke-virtual {v3}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->readLong()J

    move-result-wide v13

    goto :goto_64

    .line 111
    :cond_4d
    const-wide/16 v18, 0x0

    cmp-long v11, v13, v18

    if-nez v11, :cond_64

    .line 113
    invoke-interface/range {p0 .. p0}, Lcom/google/android/exoplayer2/extractor/ExtractorInput;->getLength()J

    move-result-wide v18

    .line 114
    .local v18, "fileEndPosition":J
    cmp-long v11, v18, v5

    if-eqz v11, :cond_64

    .line 115
    invoke-interface/range {p0 .. p0}, Lcom/google/android/exoplayer2/extractor/ExtractorInput;->getPeekPosition()J

    move-result-wide v20

    sub-long v20, v18, v20

    int-to-long v10, v12

    add-long v13, v20, v10

    .line 119
    .end local v18    # "fileEndPosition":J
    :cond_64
    :goto_64
    cmp-long v10, v1, v5

    if-eqz v10, :cond_70

    int-to-long v10, v7

    add-long/2addr v10, v13

    cmp-long v18, v10, v1

    if-lez v18, :cond_70

    .line 121
    const/4 v10, 0x0

    return v10

    .line 119
    :cond_70
    const/4 v10, 0x0

    .line 123
    int-to-long v5, v12

    cmp-long v11, v13, v5

    if-gez v11, :cond_77

    .line 125
    return v10

    .line 127
    :cond_77
    add-int/2addr v7, v12

    .line 129
    sget v5, Lcom/google/android/exoplayer2/extractor/mp4/Atom;->TYPE_moov:I

    if-ne v15, v5, :cond_8b

    .line 132
    long-to-int v5, v13

    add-int/2addr v4, v5

    .line 133
    const-wide/16 v5, -0x1

    cmp-long v10, v1, v5

    if-eqz v10, :cond_1f

    int-to-long v10, v4

    cmp-long v16, v10, v1

    if-lez v16, :cond_1f

    .line 135
    long-to-int v4, v1

    goto :goto_1f

    .line 141
    :cond_8b
    const-wide/16 v5, -0x1

    sget v10, Lcom/google/android/exoplayer2/extractor/mp4/Atom;->TYPE_moof:I

    if-eq v15, v10, :cond_e4

    sget v10, Lcom/google/android/exoplayer2/extractor/mp4/Atom;->TYPE_mvex:I

    if-ne v15, v10, :cond_97

    const/4 v10, 0x0

    goto :goto_e5

    .line 147
    :cond_97
    int-to-long v10, v7

    add-long/2addr v10, v13

    int-to-long v5, v12

    sub-long/2addr v10, v5

    int-to-long v5, v4

    cmp-long v20, v10, v5

    if-ltz v20, :cond_a2

    .line 149
    const/4 v10, 0x0

    goto :goto_e8

    .line 152
    :cond_a2
    int-to-long v5, v12

    sub-long v5, v13, v5

    long-to-int v6, v5

    .line 153
    .local v6, "atomDataSize":I
    add-int/2addr v7, v6

    .line 154
    sget v5, Lcom/google/android/exoplayer2/extractor/mp4/Atom;->TYPE_ftyp:I

    if-ne v15, v5, :cond_db

    .line 156
    const/16 v5, 0x8

    if-ge v6, v5, :cond_b1

    .line 157
    const/4 v5, 0x0

    return v5

    .line 159
    :cond_b1
    const/4 v5, 0x0

    invoke-virtual {v3, v6}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->reset(I)V

    .line 160
    iget-object v10, v3, Lcom/google/android/exoplayer2/util/ParsableByteArray;->data:[B

    invoke-interface {v0, v10, v5, v6}, Lcom/google/android/exoplayer2/extractor/ExtractorInput;->peekFully([BII)V

    .line 161
    div-int/lit8 v5, v6, 0x4

    .line 162
    .local v5, "brandsCount":I
    const/4 v10, 0x0

    .local v10, "i":I
    :goto_bd
    if-ge v10, v5, :cond_d6

    .line 163
    const/4 v11, 0x1

    if-ne v10, v11, :cond_c7

    .line 165
    const/4 v11, 0x4

    invoke-virtual {v3, v11}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->skipBytes(I)V

    goto :goto_d3

    .line 166
    :cond_c7
    invoke-virtual {v3}, Lcom/google/android/exoplayer2/util/ParsableByteArray;->readInt()I

    move-result v11

    invoke-static {v11}, Lcom/google/android/exoplayer2/extractor/mp4/Sniffer;->isCompatibleBrand(I)Z

    move-result v11

    if-eqz v11, :cond_d3

    .line 167
    const/4 v8, 0x1

    .line 168
    goto :goto_d6

    .line 162
    :cond_d3
    :goto_d3
    add-int/lit8 v10, v10, 0x1

    goto :goto_bd

    .line 171
    .end local v10    # "i":I
    :cond_d6
    :goto_d6
    if-nez v8, :cond_da

    .line 173
    const/4 v10, 0x0

    return v10

    .line 175
    .end local v5    # "brandsCount":I
    :cond_da
    goto :goto_e0

    :cond_db
    if-eqz v6, :cond_da

    .line 177
    invoke-interface {v0, v6}, Lcom/google/android/exoplayer2/extractor/ExtractorInput;->advancePeekPosition(I)V

    .line 179
    .end local v6    # "atomDataSize":I
    .end local v12    # "headerSize":I
    .end local v13    # "atomSize":J
    .end local v15    # "atomType":I
    :goto_e0
    const-wide/16 v5, -0x1

    goto/16 :goto_1f

    .line 141
    .restart local v12    # "headerSize":I
    .restart local v13    # "atomSize":J
    .restart local v15    # "atomType":I
    :cond_e4
    const/4 v10, 0x0

    .line 143
    :goto_e5
    const/4 v9, 0x1

    .line 144
    goto :goto_e8

    .line 98
    .end local v12    # "headerSize":I
    .end local v13    # "atomSize":J
    .end local v15    # "atomType":I
    :cond_e7
    const/4 v10, 0x0

    .line 180
    :goto_e8
    if-eqz v8, :cond_f0

    move/from16 v5, p1

    if-ne v5, v9, :cond_f2

    const/4 v10, 0x1

    goto :goto_f2

    :cond_f0
    move/from16 v5, p1

    :cond_f2
    :goto_f2
    return v10
.end method

.method public static sniffUnfragmented(Lcom/google/android/exoplayer2/extractor/ExtractorInput;)Z
    .registers 2
    .param p0, "input"    # Lcom/google/android/exoplayer2/extractor/ExtractorInput;
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;,
            Ljava/lang/InterruptedException;
        }
    .end annotation

    .line 85
    const/4 v0, 0x0

    invoke-static {p0, v0}, Lcom/google/android/exoplayer2/extractor/mp4/Sniffer;->sniffInternal(Lcom/google/android/exoplayer2/extractor/ExtractorInput;Z)Z

    move-result v0

    return v0
.end method