Exemplos de gst_photography_prepare_for_capture em C++ (Cpp)

Exemplo n.º 1

Arquivo: gstwrappercamerabinsrc.c Projeto: MathieuDuponchelle/gst-plugins-bad

static gboolean
start_image_capture (GstWrapperCameraBinSrc * self)
{
  GstBaseCameraSrc *bcamsrc = GST_BASE_CAMERA_SRC (self);
  GstPhotography *photography =
      (GstPhotography *) gst_bin_get_by_interface (GST_BIN_CAST (bcamsrc),
      GST_TYPE_PHOTOGRAPHY);
  gboolean ret = FALSE;
  GstCaps *caps;

  GST_DEBUG_OBJECT (self, "Starting image capture");
  gst_element_set_state (self->src_vid_src, GST_STATE_READY);

  if (self->image_renegotiate) {
    /* clean capsfilter caps so they don't interfere here */
    g_object_set (self->src_filter, "caps", NULL, NULL);
    if (self->src_zoom_filter)
      g_object_set (self->src_zoom_filter, "caps", NULL, NULL);

    caps = gst_pad_get_allowed_caps (self->imgsrc);

    gst_caps_replace (&self->image_capture_caps, caps);
    gst_caps_unref (caps);

    /* FIXME - do we need to update basecamerasrc width/height somehow here?
     * if not, i think we need to do something about _when_ they get updated
     * to be sure that set_element_zoom doesn't use the wrong values */

    /* We caught this event in the src pad event handler and now we want to
     * actually push it upstream */
    gst_pad_send_event (self->outsel_imgpad, gst_event_new_reconfigure ());

    self->image_renegotiate = FALSE;
  }

  if (photography) {
    gst_element_set_state (self->src_vid_src, GST_STATE_PLAYING);
    GST_DEBUG_OBJECT (self, "prepare image capture caps %" GST_PTR_FORMAT,
        self->image_capture_caps);
    ret = gst_photography_prepare_for_capture (photography,
        (GstPhotographyCapturePrepared) img_capture_prepared,
        self->image_capture_caps, self);
  } else {
    g_mutex_unlock (&bcamsrc->capturing_mutex);
    gst_wrapper_camera_bin_reset_video_src_caps (self,
        self->image_capture_caps);
    g_mutex_lock (&bcamsrc->capturing_mutex);
    ret = TRUE;
    gst_element_set_state (self->src_vid_src, GST_STATE_PLAYING);
  }

  return ret;
}

Exemplo n.º 2

Arquivo: gstwrappercamerabinsrc.c Projeto: PeterXu/gst-mobile

static gboolean
start_image_capture (GstWrapperCameraBinSrc * self)
{
  GstBaseCameraSrc *bcamsrc = GST_BASE_CAMERA_SRC (self);
  GstPhotography *photography = gst_base_camera_src_get_photography (bcamsrc);
  gboolean ret = FALSE;
  GstCaps *caps;

  GST_DEBUG_OBJECT (self, "Starting image capture");

  if (self->image_renegotiate) {
    /* clean capsfilter caps so they don't interfere here */
    g_object_set (self->src_filter, "caps", NULL, NULL);
    if (self->src_zoom_filter)
      g_object_set (self->src_zoom_filter, "caps", NULL, NULL);

    caps = gst_pad_get_allowed_caps (self->imgsrc);

    caps = gst_caps_make_writable (caps);
    gst_pad_fixate_caps (self->imgsrc, caps);

    gst_caps_replace (&self->image_capture_caps, caps);
    gst_caps_unref (caps);

    self->image_renegotiate = FALSE;
  }

  if (photography) {
    GST_DEBUG_OBJECT (self, "prepare image capture caps %" GST_PTR_FORMAT,
        self->image_capture_caps);
    ret = gst_photography_prepare_for_capture (photography,
        (GstPhotoCapturePrepared) img_capture_prepared,
        self->image_capture_caps, self);
  } else {
    g_mutex_unlock (bcamsrc->capturing_mutex);
    gst_wrapper_camera_bin_reset_video_src_caps (self,
        self->image_capture_caps);
    g_mutex_lock (bcamsrc->capturing_mutex);
    ret = TRUE;
  }

  return ret;
}

Exemplo n.º 3

Arquivo: gstwrappercamerabinsrc.c Projeto: miguelao/gst-plugins-bad

static gboolean
start_image_capture (GstWrapperCameraBinSrc * self)
{
  GstBaseCameraSrc *bcamsrc = GST_BASE_CAMERA_SRC (self);
  GstPhotography *photography =
      (GstPhotography *) gst_bin_get_by_interface (GST_BIN_CAST (bcamsrc),
      GST_TYPE_PHOTOGRAPHY);
  gboolean ret = FALSE;
  GstCaps *caps;
  GstPad *pad, *peer;

  GST_DEBUG_OBJECT (self, "Starting image capture");
  gst_element_set_state (self->src_vid_src, GST_STATE_READY);

  /* FIXME - V4L2 source will not close the device until all buffers have came
   * back. Flushing the pipeline, will ensure it's properly closed, and that
   * setting it back to PLAYING will work. This is more a workaround then a
   * solution to buffer reclaiming. */
  pad = gst_element_get_static_pad (self->src_vid_src, "src");
  peer = gst_pad_get_peer (pad);
  gst_object_unref (pad);
  gst_pad_send_event (peer, gst_event_new_flush_start ());
  gst_pad_send_event (peer, gst_event_new_flush_stop (TRUE));
  gst_object_unref (peer);

  if (self->image_renegotiate) {
    /* clean capsfilter caps so they don't interfere here */
    g_object_set (self->src_filter, "caps", NULL, NULL);
    if (self->src_zoom_filter)
      g_object_set (self->src_zoom_filter, "caps", NULL, NULL);

    caps = gst_pad_get_allowed_caps (self->imgsrc);

    gst_caps_replace (&self->image_capture_caps, caps);
    gst_caps_unref (caps);

    /* FIXME - do we need to update basecamerasrc width/height somehow here?
     * if not, i think we need to do something about _when_ they get updated
     * to be sure that set_element_zoom doesn't use the wrong values */

    /* We caught this event in the src pad event handler and now we want to
     * actually push it upstream */
    gst_pad_send_event (self->outsel_imgpad, gst_event_new_reconfigure ());

    self->image_renegotiate = FALSE;
  }

  if (photography) {
    gst_element_set_state (self->src_vid_src, GST_STATE_PLAYING);
    GST_DEBUG_OBJECT (self, "prepare image capture caps %" GST_PTR_FORMAT,
        self->image_capture_caps);
    ret = gst_photography_prepare_for_capture (photography,
        (GstPhotographyCapturePrepared) img_capture_prepared,
        self->image_capture_caps, self);
  } else {
    g_mutex_unlock (&bcamsrc->capturing_mutex);
    gst_wrapper_camera_bin_reset_video_src_caps (self,
        self->image_capture_caps);
    g_mutex_lock (&bcamsrc->capturing_mutex);
    ret = TRUE;
    gst_element_set_state (self->src_vid_src, GST_STATE_PLAYING);
  }

  return ret;
}