#include <QPixmap>
#include <QFile>
-#include <QThread>
-#include <QMutex>
#include <QDomElement>
+#include <QFuture>
#include <KUrl>
+#include <kdeversion.h>
#include <mlt++/Mlt.h>
/**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 {
+namespace Mlt
+{
class Miracle;
class Consumer;
class Producer;
class ClipManager;
+typedef QMap <int, QMap <int, QByteArray> > audioByteArray;
-
-class MyThread : public QThread {
- Q_OBJECT
-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;
-
-signals:
- void audioThumbProgress(const int);
- void audioThumbOver();
-};
-
-class KThumb: public QObject {
+class KThumb: public QObject
+{
Q_OBJECT public:
void setProducer(Mlt::Producer *producer);
void askForAudioThumbs(const QString &id);
bool hasProducer() const;
+ void clearProducer();
void updateThumbUrl(const QString &hash);
-
-public slots:
void extractImage(int frame, int frame2);
QPixmap extractImage(int frame, int width, int height);
+#if KDE_IS_VERSION(4,5,0)
+ /** @brief Request thumbnails for the frame range. */
+ void queryIntraThumbs(QList <int> missingFrames);
+ /** @brief Query cached thumbnail. */
+ QImage findCachedThumb(const QString path);
+#endif
+
+public slots:
void updateClipUrl(KUrl url, const QString &hash);
static QPixmap getImage(KUrl url, int width, int height);
// static QPixmap getImage(QDomElement xml, int frame, int width, int height);
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);
+ 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(QImage image);
private slots:
- void slotAudioThumbProgress(const int progress);
void slotAudioThumbOver();
+ void slotCreateAudioThumbs();
+#if KDE_IS_VERSION(4,5,0)
+ /** @brief Fetch all requested frames. */
+ void slotGetIntraThumbs();
+#endif
private:
- MyThread audioThumbProducer;
+ QFuture<void> m_audioThumbProducer;
KUrl m_url;
QString m_thumbFile;
double m_dar;
+ double m_ratio;
Mlt::Producer *m_producer;
ClipManager *m_clipManager;
QString m_id;
- int m_mainFrame;
+ QList <int> m_requestedThumbs;
+ /** @brief Controls the thumbnails process. */
+ QFuture<void> m_future;
+ /** @brief Controls the intra frames thumbnails process (cached thumbnails). */
+ QFuture<void> m_intra;
+ QFile m_audioThumbFile;
+ bool m_stopAudioThumbs;
+ double m_frame;
+ double m_frameLength;
+ int m_frequency;
+ int m_channels;
+ int m_arrayWidth;
+ /** @brief List of frame numbers from which we want to extract thumbnails. */
+ QList <int> m_intraFramesQueue;
+ QMutex m_mutex;
+ QMutex m_listMutex;
+ void doGetThumbs();
+ QImage getProducerFrame(int framepos, int frameWidth, int displayWidth, int height);
signals:
- void thumbReady(int, QPixmap);
+ void thumbReady(int, QImage);
void mainThumbReady(const QString &, QPixmap);
- void audioThumbReady(QMap <int, QMap <int, QByteArray> >);
+ void audioThumbReady(const audioByteArray&);
+ /** @brief We have finished caching all requested thumbs. */
+ void thumbsCached();
};
#endif