summaryrefslogtreecommitdiffstats
path: root/src/library/coverart.cpp
blob: 27f317d6ba351713f1b1b0d4b805208031ec328a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
#include "library/coverart.h"

#include "library/coverartutils.h"
#include "util/debug.h"
#include "util/logger.h"

namespace {

mixxx::Logger kLogger("CoverArt");

QString sourceToString(CoverInfo::Source source) {
    switch (source) {
        case CoverInfo::UNKNOWN:
            return "UNKNOWN";
        case CoverInfo::GUESSED:
            return "GUESSED";
        case CoverInfo::USER_SELECTED:
            return "USER_SELECTED";
    }
    return "INVALID INFO VALUE";
}

QString typeToString(CoverInfo::Type type) {
    switch (type) {
        case CoverInfo::NONE:
            return "NONE";
        case CoverInfo::METADATA:
            return "METADATA";
        case CoverInfo::FILE:
            return "FILE";
    }
    return "INVALID TYPE VALUE";
}

QString coverInfoRelativeToString(const CoverInfoRelative& infoRelative) {
    return typeToString(infoRelative.type) % "," %
           sourceToString(infoRelative.source) % "," %
           infoRelative.coverLocation % "," %
           "0x" % QString::number(infoRelative.hash, 16);
}

QString coverInfoToString(const CoverInfo& info) {
    return coverInfoRelativeToString(info) % "," %
           info.trackLocation % ",";
}
} // anonymous namespace

//static
quint16 CoverImageUtils::calculateHash(
        const QImage& image) {
    const auto hash = qChecksum(
            reinterpret_cast<const char*>(image.constBits()),
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
            image.sizeInBytes()
#else
            image.byteCount()
#endif
            );
    DEBUG_ASSERT(image.isNull() || isValidHash(hash));
    DEBUG_ASSERT(!image.isNull() || hash == defaultHash());
    return hash;
}

CoverInfoRelative::CoverInfoRelative()
        : source(UNKNOWN),
          type(NONE),
          hash(CoverImageUtils::defaultHash()) {
}

bool operator==(const CoverInfoRelative& a, const CoverInfoRelative& b) {
    return a.source == b.source &&
            a.type == b.type &&
            a.hash == b.hash &&
            a.coverLocation == b.coverLocation;
}

bool operator!=(const CoverInfoRelative& a, const CoverInfoRelative& b) {
    return !(a == b);
}

QDebug operator<<(QDebug dbg, const CoverInfoRelative& infoRelative) {
    return dbg.maybeSpace() << QString("CoverInfoRelative(%1)")
            .arg(coverInfoRelativeToString(infoRelative));
}

QImage CoverInfo::loadImage(
        const SecurityTokenPointer& pTrackLocationToken) const {
    if (type == CoverInfo::METADATA) {
        VERIFY_OR_DEBUG_ASSERT(!trackLocation.isEmpty()) {
            kLogger.warning()
                    << "loadImage"
                    << type
                    << "cover with empty trackLocation";
            return QImage();
        }
        return CoverArtUtils::extractEmbeddedCover(
                TrackFile(trackLocation),
                pTrackLocationToken);
    } else if (type == CoverInfo::FILE) {
        // NOTE(uklotzde): I have not idea when the trackLocation might ever
        // become empty here?? But there is a test especially for this case!
        // We cannot use VERIFY_OR_DEBUG_ASSERT unless someone is able to
        // rule out this strange use case.
        if (trackLocation.isEmpty()) {
            kLogger.debug()
                    << "loadImage"
                    << type
                    << "cover with empty trackLocation."
                    << "Relative paths will not work.";
            SecurityTokenPointer pToken =
                    Sandbox::openSecurityToken(
                            QFileInfo(coverLocation),
                            true);
            return QImage(coverLocation);
        }

        const QFileInfo coverFile(
                TrackFile(trackLocation).directory(),
                coverLocation);
        const QString coverFilePath = coverFile.filePath();
        if (!coverFile.exists()) {
            kLogger.warning()
                    << "loadImage"
                    << type
                    << "cover does not exist:"
                    << coverFilePath;
            return QImage();
        }
        SecurityTokenPointer pToken =
                Sandbox::openSecurityToken(coverFile, true);
        return QImage(coverFilePath);
    } else if (type == CoverInfo::NONE) {
        return QImage();
    } else {
        DEBUG_ASSERT(!"unhandled CoverInfo::Type");
        return QImage();
    }
}

bool operator==(const CoverInfo& a, const CoverInfo& b) {
    return static_cast<const CoverInfoRelative&>(a) ==
                    static_cast<const CoverInfoRelative&>(b) &&
            a.trackLocation == b.trackLocation;
}

bool operator!=(const CoverInfo& a, const CoverInfo& b) {
    return !(a == b);
}

QDebug operator<<(QDebug dbg, const CoverInfo& info) {
    return dbg.maybeSpace() << QString("CoverInfo(%1)")
            .arg(coverInfoToString(info));
}

QDebug operator<<(QDebug dbg, const CoverArt& art) {
    return dbg.maybeSpace() << QString("CoverArt(%1,%2,%3)")
            .arg(coverInfoToString(art),
                 toDebugString(art.image.size()),
                 QString::number(art.resizedToWidth));
}