static void
gst_wrapper_camera_bin_reset_video_src_caps (GstWrapperCameraBinSrc * self,
GstCaps * caps)
{
GST_DEBUG_OBJECT (self, "Resetting src caps to %" GST_PTR_FORMAT, caps);
if (self->src_vid_src) {
gst_element_set_state (self->src_vid_src, GST_STATE_NULL);
set_capsfilter_caps (self, caps);
GST_DEBUG_OBJECT (self, "Bringing source up");
gst_element_sync_state_with_parent (self->src_vid_src);
}
}
static void
gst_wrapper_camera_bin_reset_video_src_caps (GstWrapperCameraBinSrc * self,
GstCaps * caps)
{
GstClock *clock;
gint64 base_time;
GST_DEBUG_OBJECT (self, "Resetting src caps to %" GST_PTR_FORMAT, caps);
if (self->src_vid_src) {
clock = gst_element_get_clock (self->src_vid_src);
base_time = gst_element_get_base_time (self->src_vid_src);
gst_element_set_state (self->src_vid_src, GST_STATE_READY);
set_capsfilter_caps (self, caps);
self->drop_newseg = TRUE;
GST_DEBUG_OBJECT (self, "Bringing source up");
gst_element_sync_state_with_parent (self->src_vid_src);
if (clock) {
gst_element_set_clock (self->src_vid_src, clock);
gst_element_set_base_time (self->src_vid_src, base_time);
if (GST_IS_BIN (self->src_vid_src)) {
GstIterator *it =
gst_bin_iterate_elements (GST_BIN (self->src_vid_src));
gpointer item = NULL;
gboolean done = FALSE;
while (!done) {
switch (gst_iterator_next (it, &item)) {
case GST_ITERATOR_OK:
gst_element_set_base_time (GST_ELEMENT (item), base_time);
gst_object_unref (item);
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (it);
break;
case GST_ITERATOR_ERROR:
done = TRUE;
break;
case GST_ITERATOR_DONE:
done = TRUE;
break;
}
}
gst_iterator_free (it);
}
gst_object_unref (clock);
}
}
}
/**
* img_capture_prepared:
* @data: camerasrc object
* @caps: caps describing the prepared image format
*
* Callback which is called after image capture has been prepared.
*/
static void
img_capture_prepared (gpointer data, GstCaps * caps)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (data);
GST_INFO_OBJECT (self, "image capture prepared");
/* It is possible we are about to get something else that we requested */
if (!gst_caps_is_equal (self->image_capture_caps, caps)) {
adapt_image_capture (self, caps);
} else {
set_capsfilter_caps (self, self->image_capture_caps);
}
}
static void
gst_wrapper_camera_bin_reset_video_src_caps (GstWrapperCameraBinSrc * self,
GstCaps * caps)
{
GST_DEBUG_OBJECT (self, "Resetting src caps to %" GST_PTR_FORMAT, caps);
if (self->src_vid_src) {
GstCaps *old_caps;
g_object_get (G_OBJECT (self->src_filter), "caps", &old_caps, NULL);
if (gst_caps_is_equal (caps, old_caps)) {
GST_DEBUG_OBJECT (self, "old and new caps are same, do not reset it");
if (old_caps)
gst_caps_unref (old_caps);
return;
}
if (old_caps)
gst_caps_unref (old_caps);
set_capsfilter_caps (self, caps);
}
}
/**
* adapt_image_capture:
* @self: camerasrc object
* @in_caps: caps object that describes incoming image format
*
* Adjust capsfilters and crop according image capture caps if necessary.
* The captured image format from video source might be different from
* what application requested, so we can try to fix that in camerabin.
*
*/
static void
adapt_image_capture (GstWrapperCameraBinSrc * self, GstCaps * in_caps)
{
GstBaseCameraSrc *bcamsrc = GST_BASE_CAMERA_SRC (self);
GstStructure *in_st, *new_st, *req_st;
gint in_width = 0, in_height = 0, req_width = 0, req_height = 0, crop = 0;
gdouble ratio_w, ratio_h;
GstCaps *filter_caps = NULL;
GST_LOG_OBJECT (self, "in caps: %" GST_PTR_FORMAT, in_caps);
GST_LOG_OBJECT (self, "requested caps: %" GST_PTR_FORMAT,
self->image_capture_caps);
in_st = gst_caps_get_structure (in_caps, 0);
gst_structure_get_int (in_st, "width", &in_width);
gst_structure_get_int (in_st, "height", &in_height);
req_st = gst_caps_get_structure (self->image_capture_caps, 0);
gst_structure_get_int (req_st, "width", &req_width);
gst_structure_get_int (req_st, "height", &req_height);
GST_INFO_OBJECT (self, "we requested %dx%d, and got %dx%d", req_width,
req_height, in_width, in_height);
new_st = gst_structure_copy (req_st);
/* If new fields have been added, we need to copy them */
gst_structure_foreach (in_st, copy_missing_fields, new_st);
gst_structure_set (new_st, "width", G_TYPE_INT, in_width, "height",
G_TYPE_INT, in_height, NULL);
GST_LOG_OBJECT (self, "new image capture caps: %" GST_PTR_FORMAT, new_st);
/* Crop if requested aspect ratio differs from incoming frame aspect ratio */
if (self->src_zoom_crop) {
ratio_w = (gdouble) in_width / req_width;
ratio_h = (gdouble) in_height / req_height;
if (ratio_w < ratio_h) {
crop = in_height - (req_height * ratio_w);
self->base_crop_top = crop / 2;
self->base_crop_bottom = crop / 2;
} else {
crop = in_width - (req_width * ratio_h);
self->base_crop_left = crop / 2;
self->base_crop_right += crop / 2;
}
GST_INFO_OBJECT (self,
"setting base crop: left:%d, right:%d, top:%d, bottom:%d",
self->base_crop_left, self->base_crop_right, self->base_crop_top,
self->base_crop_bottom);
g_object_set (G_OBJECT (self->src_zoom_crop),
"top", self->base_crop_top,
"bottom", self->base_crop_bottom,
"left", self->base_crop_left, "right", self->base_crop_right, NULL);
}
/* Update capsfilters */
if (self->image_capture_caps) {
gst_caps_unref (self->image_capture_caps);
}
self->image_capture_caps = gst_caps_new_full (new_st, NULL);
set_capsfilter_caps (self, self->image_capture_caps);
/* Adjust the capsfilter before crop and videoscale elements if necessary */
if (in_width == bcamsrc->width && in_height == bcamsrc->height) {
GST_DEBUG_OBJECT (self, "no adaptation with resolution needed");
} else {
GST_DEBUG_OBJECT (self,
"changing %" GST_PTR_FORMAT " from %dx%d to %dx%d", self->src_filter,
bcamsrc->width, bcamsrc->height, in_width, in_height);
/* Apply the width and height to filter caps */
g_object_get (G_OBJECT (self->src_filter), "caps", &filter_caps, NULL);
filter_caps = gst_caps_make_writable (filter_caps);
gst_caps_set_simple (filter_caps, "width", G_TYPE_INT, in_width, "height",
G_TYPE_INT, in_height, NULL);
g_object_set (G_OBJECT (self->src_filter), "caps", filter_caps, NULL);
gst_caps_unref (filter_caps);
}
}
static void
gst_wrapper_camera_bin_reset_video_src_caps (GstWrapperCameraBinSrc * self,
GstCaps * caps)
{
GstClock *clock;
gint64 base_time;
GST_DEBUG_OBJECT (self, "Resetting src caps to %" GST_PTR_FORMAT, caps);
if (self->src_vid_src) {
GstCaps *old_caps;
g_object_get (G_OBJECT (self->src_filter), "caps", &old_caps, NULL);
if (gst_caps_is_equal (caps, old_caps)) {
GST_DEBUG_OBJECT (self, "old and new caps are same, do not reset it");
if (old_caps)
gst_caps_unref (old_caps);
return;
}
if (old_caps)
gst_caps_unref (old_caps);
clock = gst_element_get_clock (self->src_vid_src);
base_time = gst_element_get_base_time (self->src_vid_src);
/* Ideally, we should only need to get the source to READY here,
* but it seems v4l2src isn't happy with this. Putting to NULL makes
* it work.
*
* TODO fix this in v4l2src
*/
gst_element_set_state (self->src_vid_src, GST_STATE_NULL);
set_capsfilter_caps (self, caps);
self->drop_newseg = TRUE;
GST_DEBUG_OBJECT (self, "Bringing source up");
if (!gst_element_sync_state_with_parent (self->src_vid_src)) {
GST_WARNING_OBJECT (self, "Failed to reset source caps");
gst_element_set_state (self->src_vid_src, GST_STATE_NULL);
}
if (clock) {
gst_element_set_clock (self->src_vid_src, clock);
gst_element_set_base_time (self->src_vid_src, base_time);
if (GST_IS_BIN (self->src_vid_src)) {
GstIterator *it =
gst_bin_iterate_elements (GST_BIN (self->src_vid_src));
gpointer item = NULL;
gboolean done = FALSE;
while (!done) {
switch (gst_iterator_next (it, &item)) {
case GST_ITERATOR_OK:
gst_element_set_base_time (GST_ELEMENT (item), base_time);
gst_object_unref (item);
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (it);
break;
case GST_ITERATOR_ERROR:
done = TRUE;
break;
case GST_ITERATOR_DONE:
done = TRUE;
break;
}
}
gst_iterator_free (it);
}
gst_object_unref (clock);
}
}
}
