cgit.sxemacs.org Git - harmattan/cameraplus/blob - lib/qtcamdevice_p.h

   1 // -*- c++ -*-
   2
   3 #ifndef QT_CAM_DEVICE_P_H
   4 #define QT_CAM_DEVICE_P_H
   5
   6 #include <QDebug>
   7 #include <gst/gst.h>
   8 #include "qtcamconfig.h"
   9 #include "qtcamviewfinder.h"
  10 #include "qtcamdevice.h"
  11 #include "qtcammode.h"
  12
  13 class QtCamGStreamerMessageListener;
  14 class QtCamMode;
  15 class QtCamImageMode;
  16 class QtCamVideoMode;
  17
  18 class QtCamDevicePrivate {
  19 public:
  20   QtCamDevicePrivate() :
  21     cameraBin(0),
  22     videoSource(0),
  23     wrapperVideoSource(0),
  24     image(0),
  25     video(0),
  26     active(0),
  27     viewfinder(0),
  28     conf(0),
  29     error(false) {
  30
  31   }
  32
  33   GstElement *createAndAddElement(const QString& elementName, const char *prop, const char *name) {
  34     GstElement *elem = gst_element_factory_make(elementName.toAscii(), name);
  35     if (!elem) {
  36       qWarning() << "Failed to create" << elementName;
  37       return 0;
  38     }
  39
  40     g_object_set(cameraBin, prop, elem, NULL);
  41
  42     return elem;
  43   }
  44
  45   void createAndAddVideoSource() {
  46     // TODO: rework this function
  47     GstElement *src, *wrapper;
  48     QString wrapperSrc = conf->wrapperVideoSource();
  49     QString prop = conf->wrapperVideoSourceProperty();
  50
  51     if (!prop.isEmpty() && !wrapperSrc.isEmpty()) {
  52       wrapper = gst_element_factory_make(wrapperSrc.toAscii(), "QCameraWrapperVideoSrc");
  53       if (!wrapper) {
  54         qCritical() << "Failed to create wrapper source" << wrapperSrc;
  55         return;
  56       }
  57     }
  58
  59     src = gst_element_factory_make(conf->videoSource().toAscii(),
  60                                                "QtCameraVideoSrc");
  61     if (!src) {
  62       qCritical() << "Failed to create video source";
  63       if (wrapper) {
  64         gst_object_unref(wrapper);
  65       }
  66       return;
  67     }
  68
  69     if (wrapper) {
  70       g_object_set(wrapper, prop.toAscii(), src, NULL);
  71       g_object_set(cameraBin, "camera-source", wrapper, NULL);
  72     }
  73
  74     videoSource = src;
  75     wrapperVideoSource = wrapper;
  76
  77     if (!id.isValid() || id.isNull()) {
  78       return;
  79     }
  80
  81     if (conf->deviceScannerType() == SCANNER_TYPE_ENUM) {
  82       int dev = id.toInt();
  83       g_object_set(src, conf->deviceScannerProperty().toAscii().data(), dev, NULL);
  84     }
  85     else {
  86       QString dev = id.toString();
  87       g_object_set(src, conf->deviceScannerProperty().toAscii().data(),
  88                    dev.toAscii().data(), NULL);
  89     }
  90   }
  91
  92   bool setViewfinderSink() {
  93     GstElement *sink;
  94     g_object_get(cameraBin, "viewfinder-sink", &sink, NULL);
  95
  96     if (sink) {
  97       gst_object_unref(sink);
  98       return true;
  99     }
 100
 101     sink = viewfinder->sinkElement();
 102     if (!sink) {
 103       qCritical() << "Failed to create GStreamer sink element";
 104       return false;
 105     }
 106
 107     g_object_set(cameraBin, "viewfinder-sink", sink, NULL);
 108
 109     return true;
 110   }
 111
 112   void _d_error(const QString& message, int code, const QString& debug) {
 113     error = true;
 114
 115     QMetaObject::invokeMethod(q_ptr, "error", Q_ARG(QString, message),
 116                               Q_ARG(int, code), Q_ARG(QString, debug));
 117
 118     if (active) {
 119       QMetaObject::invokeMethod(active, "canCaptureChanged", Qt::QueuedConnection);
 120     }
 121   }
 122
 123   void _d_stopped() {
 124     QMetaObject::invokeMethod(q_ptr, "stopped");
 125   }
 126
 127   void _d_stopping() {
 128     if (active) {
 129       QMetaObject::invokeMethod(active, "canCaptureChanged", Qt::QueuedConnection);
 130     }
 131
 132     QMetaObject::invokeMethod(q_ptr, "stopping", Qt::QueuedConnection);
 133     QMetaObject::invokeMethod(q_ptr, "runningStateChanged", Qt::QueuedConnection,
 134                               Q_ARG(bool, false));
 135   }
 136
 137   void _d_started() {
 138     if (active) {
 139       QMetaObject::invokeMethod(active, "canCaptureChanged", Qt::QueuedConnection);
 140     }
 141
 142     QMetaObject::invokeMethod(q_ptr, "started", Qt::QueuedConnection);
 143     QMetaObject::invokeMethod(q_ptr, "runningStateChanged", Qt::QueuedConnection,
 144                               Q_ARG(bool, true));
 145   }
 146
 147   void setAudioCaptureCaps() {
 148     QString captureCaps = conf->audioCaptureCaps();
 149     if (!captureCaps.isEmpty()) {
 150       GstCaps *caps = gst_caps_from_string(captureCaps.toAscii().data());
 151       if (caps) {
 152         g_object_set(cameraBin, "audio-capture-caps", caps, NULL);
 153         gst_caps_unref(caps);
 154       }
 155     }
 156   }
 157
 158   bool isWrapperReady() {
 159     if (!wrapperVideoSource) {
 160       return false;
 161     }
 162
 163     gboolean ready = FALSE;
 164     g_object_get(wrapperVideoSource, "ready-for-capture", &ready, NULL);
 165
 166     return ready == TRUE;
 167   }
 168
 169   static void on_ready_for_capture_changed(GObject *obj, GParamSpec *pspec,
 170                                            QtCamDevicePrivate *d)  {
 171     Q_UNUSED(obj);
 172     Q_UNUSED(pspec);
 173
 174     if (!d->active) {
 175       return;
 176     }
 177
 178     QMetaObject::invokeMethod(d->active, "canCaptureChanged", Qt::QueuedConnection);
 179   }
 180
 181   static void on_idle_changed(GObject *obj, GParamSpec *pspec, QtCamDevicePrivate *d) {
 182     Q_UNUSED(obj);
 183     Q_UNUSED(pspec);
 184
 185     QMetaObject::invokeMethod(d->q_ptr, "idleStateChanged", Qt::QueuedConnection,
 186                               Q_ARG(bool, d->q_ptr->isIdle()));
 187   }
 188
 189 #if 0
 190   void resetCapabilities() {
 191     g_object_set(cameraBin, "zoom", 1.0, NULL);
 192     g_object_set(videoSource, "flash-mode", 0, NULL);
 193
 194     // TODO: should scene mode be manual or automatic ?
 195     g_object_set(videoSource, "scene-mode", 0, NULL);
 196   }
 197 #endif
 198
 199   QString name;
 200   QVariant id;
 201
 202   QtCamDevice *q_ptr;
 203
 204   GstElement *cameraBin;
 205   GstElement *videoSource;
 206   GstElement *wrapperVideoSource;
 207
 208   QtCamImageMode *image;
 209   QtCamVideoMode *video;
 210   QtCamMode *active;
 211
 212   QtCamViewfinder *viewfinder;
 213   QtCamConfig *conf;
 214   QtCamGStreamerMessageListener *listener;
 215   bool error;
 216 };
 217
 218 #endif /* QT_CAM_DEVICE_P_H */