Integrate with the required MLT hooks for getting Movit to work.

[kdenlive] / src / kthumb.h

diff --git a/src/kthumb.h b/src/kthumb.h
index ae56c9f6eeeb9cb1ba3a651cb67d9f06753f8465..21b01fbff6ff5a94467e86b7f2a635b1a72bbb0a 100644 (file)
--- a/src/kthumb.h
+++ b/src/kthumb.h
@@ -20,11 +20,11 @@
 
 #include <QPixmap>
 #include <QFile>
-#include <QThread>
-#include <QMutex>
 #include <QDomElement>
+#include <QFuture>
 
 #include <KUrl>
+#include <kdeversion.h>
 
 #include <mlt++/Mlt.h>
 
@@ -32,106 +32,88 @@
 /**KRender encapsulates the client side of the interface to a renderer.
 From Kdenlive's point of view, you treat the KRender object as the
 renderer, and simply use it as if it was local. Calls are asyncrhonous -
-you send a call out, and then recieve the return value through the
+you send a call out, and then receive the return value through the
 relevant signal that get's emitted once the call completes.
   *@author Jason Wood
   */
 
 
-namespace Mlt {
-class Miracle;
-class Consumer;
+namespace Mlt
+{
 class Producer;
 class Frame;
-class Profile;
-};
+}
 
 class ClipManager;
 
+typedef QMap <int, QMap <int, QByteArray> > audioByteArray;
 
-
-class MyThread : public QThread {
-
-public:
-    virtual void run();
-    void init(QObject *parent, KUrl url, QString target, double frame, double frameLength, int frequency, int channels, int arrayWidth);
-    bool isWorking();
-    bool stop_me;
-
-private:
-    QFile f;
-    KUrl m_url;
-    double m_frame;
-    double m_frameLength;
-    int m_frequency;
-    int m_channels;
-    int m_arrayWidth;
-    bool m_isWorking;
-    QObject *m_parent;
-};
-
-
-class ThumbThread : public QThread {
-    Q_OBJECT
+class KThumb: public QObject
+{
+   Q_OBJECT 
 public:
-    virtual void run();
-    void init(QObject *parent, Mlt::Producer *prod, int width, int height);
-    void setThumbFrames(Mlt::Producer *prod, int frame1, int frame2);
-    bool isWorking();
-    bool stop_me;
-
-private:
-    int m_width;
-    int m_height;
-    int m_frame1;
-    int m_frame2;
-    Mlt::Producer *m_prod;
-    bool m_isWorking;
-    QObject *m_parent;
-    //QMutex mutex;
 
-signals:
-    void gotStartThumb(QImage);
-    void gotEndThumb(QImage);
-
-};
-
-class KThumb: public QObject {
-Q_OBJECT public:
-
-
-    KThumb(ClipManager *clipManager, KUrl url, QObject * parent = 0, const char *name = 0);
+    explicit KThumb(ClipManager *clipManager, const KUrl &url, const QString &id, const QString &hash, QObject * parent = 0);
     ~KThumb();
     void setProducer(Mlt::Producer *producer);
+    bool hasProducer() const;
+    void clearProducer();
+    void updateThumbUrl(const QString &hash);
+    void extractImage(const QList<int> &frames);
+    QImage extractImage(int frame, int width, int height);
+#if KDE_IS_VERSION(4,5,0)
+    /** @brief Request thumbnails for the frame range. */
+    void queryIntraThumbs(const QList <int> &missingFrames);
+    /** @brief Query cached thumbnail. */
+    QImage findCachedThumb(const QString &path);
+#endif
+    void getThumb(int frame);
+    void getGenericThumb(int frame, int height, int type);
 
 public slots:
-    void extractImage(int frame, int frame2);
-    QPixmap extractImage(int frame, int width, int height);
-    void updateClipUrl(KUrl url);
-    static QPixmap getImage(KUrl url, int width, int height);
+    void updateClipUrl(const KUrl &url, const QString &hash);
+    void slotCreateAudioThumbs();
+
+public:
+    static QPixmap getImage(const KUrl &url, int width, int height);
 //    static QPixmap getImage(QDomElement xml, int frame, int width, int height);
     /* void getImage(KUrl url, int frame, int width, int height);
      void getThumbs(KUrl url, int startframe, int endframe, int width, int height);*/
-    void stopAudioThumbs();
-    void removeAudioThumb();
-    void getAudioThumbs(int channel, double frame, double frameLength, int arrayWidth);
-    static QPixmap getImage(KUrl url, int frame, int width, int height);
-    static QPixmap getFrame(Mlt::Producer *producer, int framepos, int width, int height);
-
-protected:
-    virtual void customEvent(QEvent * event);
+    static QPixmap getImage(const KUrl& url, int frame, int width, int height);
+    static QImage getFrame(Mlt::Producer *producer, int framepos, int frameWidth, int displayWidth, int height);
+    static QImage getFrame(Mlt::Frame *frame, int frameWidth, int displayWidth, int height);
+    /** @brief Calculates image variance, useful to know if a thumbnail is interesting. 
+     *  @return an integer between 0 and 100. 0 means no variance, eg. black image while bigger values mean contrasted image
+     * */
+    static uint imageVariance(const QImage &image);
+
+private slots:
+#if KDE_IS_VERSION(4,5,0)
+    /** @brief Fetch all requested frames. */ 
+    void slotGetIntraThumbs();
+#endif
 
 private:
-    MyThread audioThumbProducer;
     KUrl m_url;
     QString m_thumbFile;
     double m_dar;
+    double m_ratio;
     Mlt::Producer *m_producer;
     ClipManager *m_clipManager;
+    QString m_id;
+    /** @brief Controls the intra frames thumbnails process (cached thumbnails). */
+    QFuture<void> m_intra;
+    /** @brief List of frame numbers from which we want to extract thumbnails. */
+    QList <int> m_intraFramesQueue;
+    QMutex m_mutex;
+    QImage getProducerFrame(int framepos, int frameWidth, int displayWidth, int height);
 
 signals:
-    void thumbReady(int frame, QPixmap pm);
-    void audioThumbReady(QMap <int, QMap <int, QByteArray> >);
+    void thumbReady(int, const QImage&);
+    void mainThumbReady(const QString &, const QPixmap&);
+    void audioThumbReady(const audioByteArray&);
+    /** @brief We have finished caching all requested thumbs. */
+    void thumbsCached();
 };
 
 #endif