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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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wrappercamerabinsrc: use digitalzoom element
Replace videocrop ! videoscale ! capsfilter with the digitalzoom bin that has the same pipeline internally and already updates the capsfilter automatically when caps change, removing this code from wrappercamerabinsrc and making it cleaner.
This commit is contained in:
Thiago Santos
parent
ca96378ebf
commit
5e0e02553d
2 changed files with 14 additions and 87 deletions
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@ -32,8 +32,10 @@
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#endif
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#include <gst/interfaces/photography.h>
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#include <gst/gst-i18n-plugin.h>
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#include "gstwrappercamerabinsrc.h"
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#include "gstdigitalzoom.h"
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#include "camerabingeneral.h"
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enum
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@ -398,20 +400,6 @@ gst_wrapper_camera_bin_src_caps_cb (GstPad * pad, GParamSpec * pspec,
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/* Update zoom */
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gst_base_camera_src_setup_zoom (bcamsrc);
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/* Update post-zoom capsfilter */
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if (self->src_zoom_filter) {
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GstCaps *filtercaps;
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g_object_get (G_OBJECT (self->src_zoom_filter), "caps", &filtercaps, NULL);
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if (caps != filtercaps && (caps == NULL || filtercaps == NULL ||
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!gst_caps_is_equal (filtercaps, caps)))
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g_object_set (G_OBJECT (self->src_zoom_filter), "caps", caps, NULL);
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if (filtercaps)
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gst_caps_unref (filtercaps);
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}
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if (caps)
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gst_caps_unref (caps);
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};
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@ -589,17 +577,14 @@ gst_wrapper_camera_bin_src_construct_pipeline (GstBaseCameraSrc * bcamsrc)
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g_signal_connect (self->srcfilter_pad, "notify::caps",
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G_CALLBACK (gst_wrapper_camera_bin_src_caps_cb), self);
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if (!(self->src_zoom_crop =
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gst_camerabin_create_and_add_element (cbin, "videocrop",
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"zoom-crop")))
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if (!(self->digitalzoom = g_object_new (GST_TYPE_DIGITAL_ZOOM, NULL))) {
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GST_ELEMENT_ERROR (self, CORE, MISSING_PLUGIN,
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(_("Digitalzoom element cound't be created")), (NULL));
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goto done;
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if (!(self->src_zoom_scale =
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gst_camerabin_create_and_add_element (cbin, "videoscale",
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"zoom-scale")))
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goto done;
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if (!(self->src_zoom_filter =
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gst_camerabin_create_and_add_element (cbin, "capsfilter",
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"zoom-capsfilter")))
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}
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if (!gst_camerabin_add_element_full (GST_BIN_CAST (self), NULL,
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self->digitalzoom, "sink"))
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goto done;
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/* keep a 'tee' element that has 2 source pads, one is linked to the
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@ -616,7 +601,7 @@ gst_wrapper_camera_bin_src_construct_pipeline (GstBaseCameraSrc * bcamsrc)
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gst_object_unref (tee_pad);
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/* viewfinder pad */
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self->src_pad = gst_element_get_static_pad (self->src_zoom_filter, "src");
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self->src_pad = gst_element_get_static_pad (self->digitalzoom, "src");
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gst_ghost_pad_set_target (GST_GHOST_PAD (self->vfsrc), self->src_pad);
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gst_pad_set_active (self->vfsrc, TRUE);
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@ -797,17 +782,11 @@ start_image_capture (GstPad * pad, GstPadProbeInfo * info, gpointer udata)
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/* clean capsfilter caps so they don't interfere here */
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g_object_set (self->src_filter, "caps", NULL, NULL);
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if (self->src_zoom_filter)
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g_object_set (self->src_zoom_filter, "caps", NULL, NULL);
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caps = gst_pad_get_allowed_caps (self->imgsrc);
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gst_caps_replace (&self->image_capture_caps, caps);
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gst_caps_unref (caps);
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/* FIXME - do we need to update basecamerasrc width/height somehow here?
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* if not, i think we need to do something about _when_ they get updated
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* to be sure that set_element_zoom doesn't use the wrong values */
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/* We caught this event in the src pad event handler and now we want to
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* actually push it upstream */
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gst_pad_mark_reconfigure (pad);
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@ -849,8 +828,6 @@ start_video_capture (GstPad * pad, GstPadProbeInfo * info, gpointer udata)
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/* clean capsfilter caps so they don't interfere here */
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g_object_set (self->src_filter, "caps", NULL, NULL);
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if (self->src_zoom_filter)
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g_object_set (self->src_zoom_filter, "caps", NULL, NULL);
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}
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/* unlink from the viewfinder, link to the imagesrc pad, wait for
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@ -918,51 +895,6 @@ set_videosrc_zoom (GstWrapperCameraBinSrc * self, gfloat zoom)
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return ret;
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}
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static gboolean
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set_element_zoom (GstWrapperCameraBinSrc * self, gfloat zoom)
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{
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gboolean ret = FALSE;
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GstBaseCameraSrc *bcamsrc = GST_BASE_CAMERA_SRC (self);
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gint w2_crop = 0, h2_crop = 0;
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GstPad *pad_zoom_sink = NULL;
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gint left = 0, right = 0, top = 0, bottom = 0;
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if (self->src_zoom_crop) {
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/* Update capsfilters to apply the zoom */
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GST_INFO_OBJECT (self, "zoom: %f, orig size: %dx%d", zoom,
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bcamsrc->width, bcamsrc->height);
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if (zoom != ZOOM_1X) {
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w2_crop = (bcamsrc->width - (gint) (bcamsrc->width * ZOOM_1X / zoom)) / 2;
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h2_crop =
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(bcamsrc->height - (gint) (bcamsrc->height * ZOOM_1X / zoom)) / 2;
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left += w2_crop;
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right += w2_crop;
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top += h2_crop;
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bottom += h2_crop;
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/* force number of pixels cropped from left to be even, to avoid slow code
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* path on videoscale */
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left &= 0xFFFE;
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}
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pad_zoom_sink = gst_element_get_static_pad (self->src_zoom_crop, "sink");
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GST_INFO_OBJECT (self,
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"sw cropping: left:%d, right:%d, top:%d, bottom:%d", left, right, top,
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bottom);
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GST_PAD_STREAM_LOCK (pad_zoom_sink);
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g_object_set (self->src_zoom_crop, "left", left, "right", right, "top",
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top, "bottom", bottom, NULL);
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GST_PAD_STREAM_UNLOCK (pad_zoom_sink);
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gst_object_unref (pad_zoom_sink);
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ret = TRUE;
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}
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return ret;
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}
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static void
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gst_wrapper_camera_bin_src_set_zoom (GstBaseCameraSrc * bcamsrc, gfloat zoom)
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{
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@ -971,12 +903,11 @@ gst_wrapper_camera_bin_src_set_zoom (GstBaseCameraSrc * bcamsrc, gfloat zoom)
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GST_INFO_OBJECT (self, "setting zoom %f", zoom);
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if (set_videosrc_zoom (self, zoom)) {
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set_element_zoom (self, ZOOM_1X);
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g_object_set (self->digitalzoom, "zoom", (gfloat) 1.0, NULL);
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GST_INFO_OBJECT (self, "zoom set using videosrc");
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} else if (set_element_zoom (self, zoom)) {
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GST_INFO_OBJECT (self, "zoom set using gst elements");
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} else {
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GST_INFO_OBJECT (self, "setting zoom failed");
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GST_INFO_OBJECT (self, "zoom set using digitalzoom");
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g_object_set (self->digitalzoom, "zoom", zoom, NULL);
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}
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}
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@ -1087,8 +1018,6 @@ set_capsfilter_caps (GstWrapperCameraBinSrc * self, GstCaps * new_caps)
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/* Update capsfilters */
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g_object_set (G_OBJECT (self->src_filter), "caps", new_caps, NULL);
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if (self->src_zoom_filter)
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g_object_set (G_OBJECT (self->src_zoom_filter), "caps", new_caps, NULL);
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update_aspect_filter (self, new_caps);
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GST_INFO_OBJECT (self, "updated");
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}
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@ -78,9 +78,7 @@ struct _GstWrapperCameraBinSrc
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GstElement *src_vid_src;
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GstElement *video_filter;
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GstElement *src_filter;
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GstElement *src_zoom_crop;
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GstElement *src_zoom_scale;
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GstElement *src_zoom_filter;
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GstElement *digitalzoom;
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/* Pad from our last element that is linked
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* with the output pads */
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