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