mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-30 05:31:15 +00:00
108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
#include <clutter-gst/clutter-gst.h>
|
|
|
|
/* Setup the video texture once its size is known */
|
|
void
|
|
size_change (ClutterActor * texture, gint width, gint height,
|
|
gpointer user_data)
|
|
{
|
|
ClutterActor *stage;
|
|
gfloat new_x, new_y, new_width, new_height;
|
|
gfloat stage_width, stage_height;
|
|
ClutterAnimation *animation = NULL;
|
|
|
|
stage = clutter_actor_get_stage (texture);
|
|
if (stage == NULL)
|
|
return;
|
|
|
|
clutter_actor_get_size (stage, &stage_width, &stage_height);
|
|
|
|
/* Center video on window and calculate new size preserving aspect ratio */
|
|
new_height = (height * stage_width) / width;
|
|
if (new_height <= stage_height) {
|
|
new_width = stage_width;
|
|
|
|
new_x = 0;
|
|
new_y = (stage_height - new_height) / 2;
|
|
} else {
|
|
new_width = (width * stage_height) / height;
|
|
new_height = stage_height;
|
|
|
|
new_x = (stage_width - new_width) / 2;
|
|
new_y = 0;
|
|
}
|
|
clutter_actor_set_position (texture, new_x, new_y);
|
|
clutter_actor_set_size (texture, new_width, new_height);
|
|
clutter_actor_set_rotation (texture, CLUTTER_Y_AXIS, 0.0, stage_width / 2, 0,
|
|
0);
|
|
/* Animate it */
|
|
animation =
|
|
clutter_actor_animate (texture, CLUTTER_LINEAR, 10000, "rotation-angle-y",
|
|
360.0, NULL);
|
|
clutter_animation_set_loop (animation, TRUE);
|
|
}
|
|
|
|
int
|
|
main (int argc, char *argv[])
|
|
{
|
|
GstElement *pipeline, *sink;
|
|
ClutterTimeline *timeline;
|
|
ClutterActor *stage, *texture;
|
|
|
|
/* clutter-gst takes care of initializing Clutter and GStreamer */
|
|
if (clutter_gst_init (&argc, &argv) != CLUTTER_INIT_SUCCESS) {
|
|
g_error ("Failed to initialize clutter\n");
|
|
return -1;
|
|
}
|
|
|
|
stage = clutter_stage_get_default ();
|
|
|
|
/* Make a timeline */
|
|
timeline = clutter_timeline_new (1000);
|
|
g_object_set (timeline, "loop", TRUE, NULL);
|
|
|
|
/* Create new texture and disable slicing so the video is properly mapped onto it */
|
|
texture =
|
|
CLUTTER_ACTOR (g_object_new (CLUTTER_TYPE_TEXTURE, "disable-slicing",
|
|
TRUE, NULL));
|
|
g_signal_connect (texture, "size-change", G_CALLBACK (size_change), NULL);
|
|
|
|
/* Build the GStreamer pipeline */
|
|
pipeline =
|
|
gst_parse_launch
|
|
("playbin uri=https://www.freedesktop.org/software/gstreamer-sdk/data/media/sintel_trailer-480p.webm",
|
|
NULL);
|
|
|
|
/* Instantiate the Clutter sink */
|
|
sink = gst_element_factory_make ("autocluttersink", NULL);
|
|
if (sink == NULL) {
|
|
/* Revert to the older cluttersink, in case autocluttersink was not found */
|
|
sink = gst_element_factory_make ("cluttersink", NULL);
|
|
}
|
|
if (sink == NULL) {
|
|
g_printerr ("Unable to find a Clutter sink.\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Link GStreamer with Clutter by passing the Clutter texture to the Clutter sink */
|
|
g_object_set (sink, "texture", texture, NULL);
|
|
|
|
/* Add the Clutter sink to the pipeline */
|
|
g_object_set (pipeline, "video-sink", sink, NULL);
|
|
|
|
/* Start playing */
|
|
gst_element_set_state (pipeline, GST_STATE_PLAYING);
|
|
|
|
/* start the timeline */
|
|
clutter_timeline_start (timeline);
|
|
|
|
/* Add texture to the stage, and show it */
|
|
clutter_group_add (CLUTTER_GROUP (stage), texture);
|
|
clutter_actor_show_all (stage);
|
|
|
|
clutter_main ();
|
|
|
|
/* Free resources */
|
|
gst_element_set_state (pipeline, GST_STATE_NULL);
|
|
gst_object_unref (pipeline);
|
|
return 0;
|
|
}
|