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6** This file is part of the WebP plugins in the Qt ImageFormats module.
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39
40#ifndef QWEBPHANDLER_P_H
41#define QWEBPHANDLER_P_H
42
43#include <QtGui/qcolor.h>
44#include <QtGui/qcolorspace.h>
45#include <QtGui/qimage.h>
46#include <QtGui/qimageiohandler.h>
47#include <QtCore/qbytearray.h>
48#include <QtCore/qsize.h>
49
50#include "webp/decode.h"
51#include "webp/demux.h"
52
53class QWebpHandler : public QImageIOHandler
54{
55public:
56 QWebpHandler();
57 ~QWebpHandler();
58
59public:
60 bool canRead() const override;
61 bool read(QImage *image) override;
62
63 static bool canRead(QIODevice *device);
64
65 bool write(const QImage &image) override;
66 QVariant option(ImageOption option) const override;
67 void setOption(ImageOption option, const QVariant &value) override;
68 bool supportsOption(ImageOption option) const override;
69
70 int imageCount() const override;
71 int currentImageNumber() const override;
72 QRect currentImageRect() const override;
73 int loopCount() const override;
74 int nextImageDelay() const override;
75
76private:
77 bool ensureScanned() const;
78 bool ensureDemuxer();
79
80private:
81 enum ScanState {
82 ScanError = -1,
83 ScanNotScanned = 0,
84 ScanSuccess = 1,
85 };
86
87 int m_quality;
88 mutable ScanState m_scanState;
89 WebPBitstreamFeatures m_features;
90 uint32_t m_formatFlags;
91 int m_loop;
92 int m_frameCount;
93 QColor m_bgColor;
94 QByteArray m_rawData;
95 WebPData m_webpData;
96 WebPDemuxer *m_demuxer;
97 WebPIterator m_iter;
98 QColorSpace m_colorSpace;
99 QImage *m_composited; // For animation frames composition
100};
101
102#endif // WEBPHANDLER_H
103

source code of qtimageformats/src/plugins/imageformats/webp/qwebphandler_p.h