1 /***************************************************************************
2 mltdevicecapture.h - description
4 begin : Sun May 21 2011
5 copyright : (C) 2011 by Jean-Baptiste Mardelle (jb@kdenlive.org)
7 ***************************************************************************/
9 /***************************************************************************
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 ***************************************************************************/
19 * @class MltDeviceCapture
20 * @brief Interface for MLT capture.
23 #ifndef MLTDEVICECAPTURE_H
24 #define MLTDEVICECAPTURE_H
27 #include "definitions.h"
28 #include "abstractmonitor.h"
30 #include <mlt/framework/mlt_types.h>
32 #include <QtConcurrentRun>
48 class MltDeviceCapture: public AbstractRender
52 enum FailStates { OK = 0,
55 /** @brief Build a MLT Renderer
56 * @param winid The parent widget identifier (required for SDL display). Set to 0 for OpenGL rendering
57 * @param profile The MLT profile used for the capture (default one will be used if empty). */
58 MltDeviceCapture(QString profile, VideoPreviewContainer *surface, QWidget *parent = 0);
60 /** @brief Destroy the MLT Renderer. */
65 /** @brief This property is used to decide if the renderer should convert it's frames to QImage for use in other Kdenlive widgets. */
66 bool sendFrameForAnalysis;
68 /** @brief Someone needs us to send again a frame. */
69 void sendFrameUpdate() {};
71 void emitFrameUpdated(Mlt::Frame&);
72 void emitFrameNumber(double position);
73 void emitConsumerStopped();
74 void showFrame(Mlt::Frame&);
75 void showAudio(Mlt::Frame&);
77 void saveFrame(Mlt::Frame& frame);
79 /** @brief Starts the MLT Video4Linux process.
80 * @param surface The widget onto which the frame should be painted
82 bool slotStartCapture(const QString ¶ms, const QString &path, const QString &playlist, int livePreview, bool xmlPlaylist = true);
83 bool slotStartPreview(const QString &producer, bool xmlFormat = false);
84 /** @brief A frame arrived from the MLT Video4Linux process. */
85 void gotCapturedFrame(Mlt::Frame& frame);
86 /** @brief Save current frame to file. */
87 void captureFrame(const QString &path);
89 /** @brief This will add the video clip from path and add it in the overlay track. */
90 void setOverlay(const QString &path);
92 /** @brief This will add an MLT video effect to the overlay track. */
93 void setOverlayEffect(const QString &tag, QStringList parameters);
95 /** @brief This will add a horizontal flip effect, easier to work when filming yourself. */
96 void mirror(bool activate);
98 /** @brief This property is used to decide if the renderer should send audio data for monitoring. */
101 /** @brief True if we are processing an image (yuv > rgb) when recording. */
102 bool processingImage;
105 Mlt::Consumer * m_mltConsumer;
106 Mlt::Producer * m_mltProducer;
107 Mlt::Profile *m_mltProfile;
108 QString m_activeProfile;
110 /** @brief When true, images will be displayed on monitor while capturing. */
112 /** @brief Count captured frames, used to display only one in ten images while capturing. */
115 /** @brief The surface onto which the captured frames should be painted. */
116 VideoPreviewContainer *m_captureDisplayWidget;
118 /** @brief A human-readable description of this renderer. */
121 void uyvy2rgb(unsigned char *yuv_buffer, int width, int height);
123 QString m_capturePath;
125 /** @brief Build the MLT Consumer object with initial settings.
126 * @param profileName The MLT profile to use for the consumer */
127 void buildConsumer(const QString &profileName = QString());
131 void slotPreparePreview();
132 void slotAllowPreview();
135 /** @brief A frame's image has to be shown.
137 * Used in Mac OS X. */
138 void showImageSignal(QImage);
140 /** @brief This signal contains the audio of the current frame. */
141 void audioSamplesSignal(const QVector<int16_t>&, int freq, int num_channels, int num_samples);
143 void frameSaved(const QString &);
145 void droppedFrames(int);
147 void unblockPreview();
148 void imageReady(QImage);
153 /** @brief Stops the consumer. */