예제 #1
0
static void
gst_v4l2sink_get_property (GObject * object,
    guint prop_id, GValue * value, GParamSpec * pspec)
{
  GstV4l2Sink *v4l2sink = GST_V4L2SINK (object);

  if (!gst_v4l2_object_get_property_helper (v4l2sink->v4l2object,
          prop_id, value, pspec)) {
    switch (prop_id) {
      case PROP_QUEUE_SIZE:
        g_value_set_uint (value, v4l2sink->num_buffers);
        break;
      case PROP_OVERLAY_TOP:
        g_value_set_int (value, v4l2sink->overlay.top);
        break;
      case PROP_OVERLAY_LEFT:
        g_value_set_int (value, v4l2sink->overlay.left);
        break;
      case PROP_OVERLAY_WIDTH:
        g_value_set_uint (value, v4l2sink->overlay.width);
        break;
      case PROP_OVERLAY_HEIGHT:
        g_value_set_uint (value, v4l2sink->overlay.height);
        break;
      case PROP_PHYS_BASE:
        g_value_set_uint (value, v4l2sink->phys_base);
        break;
      default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
  }
}
예제 #2
0
static GstCaps *
gst_v4l2sink_get_caps (GstBaseSink * bsink)
{
  GstV4l2Sink *v4l2sink = GST_V4L2SINK (bsink);
  GstCaps *ret;
  GSList *walk;
  GSList *formats;

  if (!GST_V4L2_IS_OPEN (v4l2sink->v4l2object)) {
    /* FIXME: copy? */
    GST_DEBUG_OBJECT (v4l2sink, "device is not open");
    return
        gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD
            (v4l2sink)));
  }

  if (v4l2sink->probed_caps) {
    LOG_CAPS (v4l2sink, v4l2sink->probed_caps);
    return gst_caps_ref (v4l2sink->probed_caps);
  }

  formats = gst_v4l2_object_get_format_list (v4l2sink->v4l2object);

  ret = gst_caps_new_empty ();

  for (walk = v4l2sink->v4l2object->formats; walk; walk = walk->next) {
    struct v4l2_fmtdesc *format;

    GstStructure *template;
예제 #3
0
static gboolean
gst_v4l2sink_iface_supported (GstImplementsInterface * iface, GType iface_type)
{
    GstV4l2Object *v4l2object = GST_V4L2SINK (iface)->v4l2object;

#ifdef HAVE_XVIDEO
    g_assert (iface_type == GST_TYPE_X_OVERLAY ||
              iface_type == GST_TYPE_NAVIGATION ||
              iface_type == GST_TYPE_COLOR_BALANCE ||
              iface_type == GST_TYPE_VIDEO_ORIENTATION ||
              iface_type == GST_TYPE_TUNER);
#else
    g_assert (iface_type == GST_TYPE_COLOR_BALANCE ||
              iface_type == GST_TYPE_VIDEO_ORIENTATION ||
              iface_type == GST_TYPE_TUNER);
#endif

    if (v4l2object->video_fd == -1)
        return FALSE;

#ifdef HAVE_XVIDEO
    if (!GST_V4L2_IS_OVERLAY (v4l2object)) {
        if (iface_type == GST_TYPE_X_OVERLAY || iface_type == GST_TYPE_NAVIGATION)
            return FALSE;
    }
#endif

    return TRUE;
}
예제 #4
0
static gboolean
gst_v4l2sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
{
  GstV4l2Sink *v4l2sink = GST_V4L2SINK (bsink);
  GstV4l2Object *obj = v4l2sink->v4l2object;
  GstBufferPool *pool;
  guint size = 0;
  GstCaps *caps;
  gboolean need_pool;

  gst_query_parse_allocation (query, &caps, &need_pool);

  if (caps == NULL)
    goto no_caps;

  if ((pool = obj->pool))
    gst_object_ref (pool);

  if (pool != NULL) {
    GstCaps *pcaps;
    GstStructure *config;

    /* we had a pool, check caps */
    config = gst_buffer_pool_get_config (pool);
    gst_buffer_pool_config_get_params (config, &pcaps, &size, NULL, NULL);

    GST_DEBUG_OBJECT (v4l2sink,
        "we had a pool with caps %" GST_PTR_FORMAT, pcaps);
    if (!gst_caps_is_equal (caps, pcaps)) {
      gst_structure_free (config);
      gst_object_unref (pool);
      goto different_caps;
    }
    gst_structure_free (config);
  }
  /* we need at least 2 buffers to operate */
  gst_query_add_allocation_pool (query, pool, size, 2, 0);

  /* we also support various metadata */
  gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
  gst_query_add_allocation_meta (query, GST_VIDEO_CROP_META_API_TYPE, NULL);

  if (pool)
    gst_object_unref (pool);

  return TRUE;

  /* ERRORS */
no_caps:
  {
    GST_DEBUG_OBJECT (v4l2sink, "no caps specified");
    return FALSE;
  }
different_caps:
  {
    /* different caps, we can't use this pool */
    GST_DEBUG_OBJECT (v4l2sink, "pool has different caps");
    return FALSE;
  }
}
예제 #5
0
static gboolean
gst_v4l2sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
{
  GstV4l2Sink *v4l2sink = GST_V4L2SINK (bsink);
  GstV4l2Object *obj = v4l2sink->v4l2object;

  LOG_CAPS (v4l2sink, caps);

  if (!GST_V4L2_IS_OPEN (v4l2sink->v4l2object)) {
    GST_DEBUG_OBJECT (v4l2sink, "device is not open");
    return FALSE;
  }

  /* make sure the caps changed before doing anything */
  if (gst_v4l2_object_caps_equal (obj, caps))
    return TRUE;

  if (!gst_v4l2_object_stop (obj))
    goto stop_failed;

  if (!gst_v4l2_object_set_format (v4l2sink->v4l2object, caps))
    goto invalid_format;

  gst_v4l2sink_sync_overlay_fields (v4l2sink);
  gst_v4l2sink_sync_crop_fields (v4l2sink);

#ifdef HAVE_XVIDEO
  gst_v4l2_video_overlay_prepare_window_handle (v4l2sink->v4l2object, TRUE);
#endif

  GST_INFO_OBJECT (v4l2sink, "outputting buffers via mmap()");

  v4l2sink->video_width = GST_V4L2_WIDTH (v4l2sink->v4l2object);
  v4l2sink->video_height = GST_V4L2_HEIGHT (v4l2sink->v4l2object);

  /* TODO: videosink width/height should be scaled according to
   * pixel-aspect-ratio
   */
  GST_VIDEO_SINK_WIDTH (v4l2sink) = v4l2sink->video_width;
  GST_VIDEO_SINK_HEIGHT (v4l2sink) = v4l2sink->video_height;

  return TRUE;

  /* ERRORS */
stop_failed:
  {
    GST_DEBUG_OBJECT (v4l2sink, "failed to stop streaming");
    return FALSE;
  }
invalid_format:
  {
    /* error already posted */
    GST_DEBUG_OBJECT (v4l2sink, "can't set format");
    return FALSE;
  }
}
예제 #6
0
static void
gst_v4l2sink_set_property (GObject * object,
    guint prop_id, const GValue * value, GParamSpec * pspec)
{
  GstV4l2Sink *v4l2sink = GST_V4L2SINK (object);

  if (!gst_v4l2_object_set_property_helper (v4l2sink->v4l2object,
          prop_id, value, pspec)) {
    switch (prop_id) {
      case PROP_OVERLAY_TOP:
        v4l2sink->overlay.top = g_value_get_int (value);
        v4l2sink->overlay_fields_set |= RECT_TOP_SET;
        gst_v4l2sink_sync_overlay_fields (v4l2sink);
        break;
      case PROP_OVERLAY_LEFT:
        v4l2sink->overlay.left = g_value_get_int (value);
        v4l2sink->overlay_fields_set |= RECT_LEFT_SET;
        gst_v4l2sink_sync_overlay_fields (v4l2sink);
        break;
      case PROP_OVERLAY_WIDTH:
        v4l2sink->overlay.width = g_value_get_uint (value);
        v4l2sink->overlay_fields_set |= RECT_WIDTH_SET;
        gst_v4l2sink_sync_overlay_fields (v4l2sink);
        break;
      case PROP_OVERLAY_HEIGHT:
        v4l2sink->overlay.height = g_value_get_uint (value);
        v4l2sink->overlay_fields_set |= RECT_HEIGHT_SET;
        gst_v4l2sink_sync_overlay_fields (v4l2sink);
        break;
      case PROP_CROP_TOP:
        v4l2sink->crop.top = g_value_get_int (value);
        v4l2sink->crop_fields_set |= RECT_TOP_SET;
        gst_v4l2sink_sync_crop_fields (v4l2sink);
        break;
      case PROP_CROP_LEFT:
        v4l2sink->crop.left = g_value_get_int (value);
        v4l2sink->crop_fields_set |= RECT_LEFT_SET;
        gst_v4l2sink_sync_crop_fields (v4l2sink);
        break;
      case PROP_CROP_WIDTH:
        v4l2sink->crop.width = g_value_get_uint (value);
        v4l2sink->crop_fields_set |= RECT_WIDTH_SET;
        gst_v4l2sink_sync_crop_fields (v4l2sink);
        break;
      case PROP_CROP_HEIGHT:
        v4l2sink->crop.height = g_value_get_uint (value);
        v4l2sink->crop_fields_set |= RECT_HEIGHT_SET;
        gst_v4l2sink_sync_crop_fields (v4l2sink);
        break;
      default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
  }
}
예제 #7
0
static void
gst_v4l2sink_dispose (GObject * object)
{
  GstV4l2Sink *v4l2sink = GST_V4L2SINK (object);

  if (v4l2sink->probed_caps) {
    gst_caps_unref (v4l2sink->probed_caps);
  }

  G_OBJECT_CLASS (parent_class)->dispose (object);
}
예제 #8
0
/* this is somewhat of a hack.. but better to keep the hack in
 * one place than copy/pasting it around..
 */
static GstV4l2Object *
get_v4l2_object (GstElement * v4l2elem)
{
  GstV4l2Object *v4l2object = NULL;
  if (GST_IS_V4L2SRC (v4l2elem)) {
    v4l2object = (GST_V4L2SRC (v4l2elem))->v4l2object;
  } else if (GST_IS_V4L2SINK (v4l2elem)) {
    v4l2object = (GST_V4L2SINK (v4l2elem))->v4l2object;
  } else {
    GST_ERROR_OBJECT (v4l2elem, "unknown v4l2 element");
  }
  return v4l2object;
}
예제 #9
0
static GstCaps *
gst_v4l2sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
{
  GstV4l2Sink *v4l2sink = GST_V4L2SINK (bsink);

  if (!GST_V4L2_IS_OPEN (v4l2sink->v4l2object)) {
    /* FIXME: copy? */
    GST_DEBUG_OBJECT (v4l2sink, "device is not open");
    return gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD (v4l2sink));
  }


  return gst_v4l2_object_get_caps (v4l2sink->v4l2object, filter);
}
예제 #10
0
static GstStateChangeReturn
gst_v4l2sink_change_state (GstElement * element, GstStateChange transition)
{
    GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
    GstV4l2Sink *v4l2sink = GST_V4L2SINK (element);

    GST_DEBUG_OBJECT (v4l2sink, "%d -> %d",
                      GST_STATE_TRANSITION_CURRENT (transition),
                      GST_STATE_TRANSITION_NEXT (transition));

    switch (transition) {
    case GST_STATE_CHANGE_NULL_TO_READY:
        /* open the device */
        if (!gst_v4l2_object_start (v4l2sink->v4l2object))
            return GST_STATE_CHANGE_FAILURE;
        break;
    default:
        break;
    }

    ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);

    switch (transition) {
    case GST_STATE_CHANGE_PAUSED_TO_READY:
        if (v4l2sink->state == STATE_STREAMING) {
            if (!gst_v4l2_object_stop_streaming (v4l2sink->v4l2object)) {
                return GST_STATE_CHANGE_FAILURE;
            }
            v4l2sink->state = STATE_PENDING_STREAMON;
        }
        break;
    case GST_STATE_CHANGE_READY_TO_NULL:
        if (NULL != v4l2sink->pool)
            gst_v4l2_buffer_pool_destroy (v4l2sink->pool);
        v4l2sink->pool = NULL;
        /* close the device */
        if (!gst_v4l2_object_stop (v4l2sink->v4l2object))
            return GST_STATE_CHANGE_FAILURE;
        v4l2sink->state = STATE_OFF;
        break;
    default:
        break;
    }

    return ret;
}
예제 #11
0
static void
gst_v4l2sink_navigation_send_event (GstNavigation * navigation,
    GstStructure * structure)
{
  GstV4l2Sink *v4l2sink = GST_V4L2SINK (navigation);
  GstV4l2Xv *xv = v4l2sink->v4l2object->xv;
  GstPad *peer;

  if (!xv)
    return;

  if ((peer = gst_pad_get_peer (GST_VIDEO_SINK_PAD (v4l2sink)))) {
    GstVideoRectangle rect;
    gdouble x, y, xscale = 1.0, yscale = 1.0;

    gst_v4l2_video_overlay_get_render_rect (v4l2sink->v4l2object, &rect);

    /* We calculate scaling using the original video frames geometry to
     * include pixel aspect ratio scaling.
     */
    xscale = (gdouble) v4l2sink->video_width / rect.w;
    yscale = (gdouble) v4l2sink->video_height / rect.h;

    /* Converting pointer coordinates to the non scaled geometry */
    if (gst_structure_get_double (structure, "pointer_x", &x)) {
      x = MIN (x, rect.x + rect.w);
      x = MAX (x - rect.x, 0);
      gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE,
          (gdouble) x * xscale, NULL);
    }
    if (gst_structure_get_double (structure, "pointer_y", &y)) {
      y = MIN (y, rect.y + rect.h);
      y = MAX (y - rect.y, 0);
      gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE,
          (gdouble) y * yscale, NULL);
    }

    gst_pad_send_event (peer, gst_event_new_navigation (structure));
    gst_object_unref (peer);
  }
}
예제 #12
0
static GstStateChangeReturn
gst_v4l2sink_change_state (GstElement * element, GstStateChange transition)
{
  GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
  GstV4l2Sink *v4l2sink = GST_V4L2SINK (element);

  GST_DEBUG_OBJECT (v4l2sink, "%d -> %d",
      GST_STATE_TRANSITION_CURRENT (transition),
      GST_STATE_TRANSITION_NEXT (transition));

  switch (transition) {
    case GST_STATE_CHANGE_NULL_TO_READY:
      /* open the device */
      if (!gst_v4l2_object_open (v4l2sink->v4l2object))
        return GST_STATE_CHANGE_FAILURE;
      break;
    default:
      break;
  }

  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);

  switch (transition) {
    case GST_STATE_CHANGE_PAUSED_TO_READY:
      if (!gst_v4l2_object_stop (v4l2sink->v4l2object))
        return GST_STATE_CHANGE_FAILURE;
      break;
    case GST_STATE_CHANGE_READY_TO_NULL:
      /* we need to call stop here too */
      if (!gst_v4l2_object_stop (v4l2sink->v4l2object))
        return GST_STATE_CHANGE_FAILURE;
      /* close the device */
      if (!gst_v4l2_object_close (v4l2sink->v4l2object))
        return GST_STATE_CHANGE_FAILURE;
      break;
    default:
      break;
  }

  return ret;
}
예제 #13
0
static gboolean
gst_v4l2sink_iface_supported (GstImplementsInterface * iface, GType iface_type)
{
  GstV4l2Object *v4l2object = GST_V4L2SINK (iface)->v4l2object;

#if 0                           /* overlay is still not implemented #ifdef HAVE_XVIDEO */
  g_assert (iface_type == GST_TYPE_X_OVERLAY ||
      iface_type == GST_TYPE_COLOR_BALANCE ||
      iface_type == GST_TYPE_VIDEO_ORIENTATION);
#else
  g_assert (iface_type == GST_TYPE_COLOR_BALANCE ||
      iface_type == GST_TYPE_VIDEO_ORIENTATION);
#endif

  if (v4l2object->video_fd == -1)
    return FALSE;

#if 0                           /* overlay is still not implemented #ifdef HAVE_XVIDEO */
  if (iface_type == GST_TYPE_X_OVERLAY && !GST_V4L2_IS_OVERLAY (v4l2object))
    return FALSE;
#endif

  return TRUE;
}
예제 #14
0
/* called after A/V sync to render frame */
static GstFlowReturn
gst_v4l2sink_show_frame (GstBaseSink * bsink, GstBuffer * buf)
{
  GstFlowReturn ret;
  GstV4l2Sink *v4l2sink = GST_V4L2SINK (bsink);
  GstV4l2Object *obj = v4l2sink->v4l2object;

  GST_DEBUG_OBJECT (v4l2sink, "render buffer: %p", buf);

  if (G_UNLIKELY (obj->pool == NULL))
    goto not_negotiated;

  ret =
      gst_v4l2_buffer_pool_process (GST_V4L2_BUFFER_POOL_CAST (obj->pool), buf);

  return ret;

  /* ERRORS */
not_negotiated:
  {
    GST_ERROR_OBJECT (bsink, "not negotiated");
    return GST_FLOW_NOT_NEGOTIATED;
  }
}