test-xoverlay.c 6.78 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
/* GStreamer
 * Copyright (C) <2008> Stefan Kost <ensonic@users.sf.net>
 *
 * test-xoverlay: test xoverlay custom event handling and subregions
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdlib.h>
#include <string.h>
#include <math.h>

#include <glib.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>

#include <gst/gst.h>
#include <gst/interfaces/xoverlay.h>
#include <gst/video/gstvideosink.h>

38
39
40
41
42
43
44
45
#if !GTK_CHECK_VERSION (2, 17, 7)
static void
gtk_widget_get_allocation (GtkWidget * w, GtkAllocation * a)
{
  *a = w->allocation;
}
#endif

46
47
48
49
50
51
52
53
54
static struct
{
  gint w, h;
  GstXOverlay *overlay;
  GtkWidget *widget;
  gdouble a, p;
  GstVideoRectangle rect;
  gboolean running;
} anim_state;
55
56

static gboolean verbose = FALSE;
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74

static gboolean
animate_render_rect (gpointer user_data)
{
  if (anim_state.running) {
    GstVideoRectangle *r = &anim_state.rect;
    gdouble s = sin (3.0 * anim_state.a);
    gdouble c = cos (2.0 * anim_state.a);

    anim_state.a += anim_state.p;
    if (anim_state.a > (M_PI + M_PI))
      anim_state.a -= (M_PI + M_PI);

    r->w = anim_state.w / 2;
    r->x = (r->w - (r->w / 2)) + c * (r->w / 2);
    r->h = anim_state.h / 2;
    r->y = (r->h - (r->h / 2)) + s * (r->h / 2);

75
76
    gst_x_overlay_set_render_rectangle (anim_state.overlay, r->x, r->y,
        r->w, r->h);
77
78
79
80
81
82
83
84
85
86
87
    gtk_widget_queue_draw (anim_state.widget);
  }
  return TRUE;
}

static gboolean
handle_resize_cb (GtkWidget * widget, GdkEventConfigure * event,
    gpointer user_data)
{
  GtkAllocation allocation;

88
  gtk_widget_get_allocation (widget, &allocation);
89

90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
  if (verbose) {
    g_print ("resize(%p): %dx%d\n", widget, allocation.width,
        allocation.height);
  }
  anim_state.w = allocation.width;
  anim_state.h = allocation.height;
  animate_render_rect (NULL);

  return FALSE;
}

static gboolean
handle_expose_cb (GtkWidget * widget, GdkEventExpose * event,
    gpointer user_data)
{
  GstVideoRectangle *r = &anim_state.rect;
106
107
108
  GtkAllocation allocation;
  GdkWindow *window;
  GtkStyle *style;
109
  cairo_t *cr;
110
111
112
113

  style = gtk_widget_get_style (widget);
  window = gtk_widget_get_window (widget);
  gtk_widget_get_allocation (widget, &allocation);
114
115
116
  cr = gdk_cairo_create (window);

  gdk_cairo_set_source_color (cr, &style->bg[GTK_STATE_NORMAL]);
117
118

  /* we should only redraw outside of the video rect! */
119
120
  cairo_rectangle (cr, 0, event->area.y, r->x, event->area.height);
  cairo_rectangle (cr, r->x + r->w, event->area.y,
121
      allocation.width - (r->x + r->w), event->area.height);
122

123
124
  cairo_rectangle (cr, event->area.x, 0, event->area.width, r->y);
  cairo_rectangle (cr, event->area.x, r->y + r->h,
125
      event->area.width, allocation.height - (r->y + r->h));
126
127
128
129
130

  cairo_fill (cr);

  cairo_destroy (cr);

131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
  if (verbose) {
    g_print ("expose(%p)\n", widget);
  }
  gst_x_overlay_expose (anim_state.overlay);
  return FALSE;
}

static void
window_closed (GtkWidget * widget, GdkEvent * event, gpointer user_data)
{
  GstElement *pipeline = user_data;

  if (verbose) {
    g_print ("stopping\n");
  }
  anim_state.running = FALSE;
147
  gtk_widget_hide (widget);
148
149
150
151
152
153
154
  gst_element_set_state (pipeline, GST_STATE_NULL);
  gtk_main_quit ();
}

gint
main (gint argc, gchar ** argv)
{
155
  GdkWindow *video_window_xwindow;
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
  GtkWidget *window, *video_window;
  GstElement *pipeline, *src, *sink;
  GstStateChangeReturn sret;
  gulong embed_xid = 0;
  gboolean force_aspect = FALSE, draw_borders = FALSE;

  if (!g_thread_supported ())
    g_thread_init (NULL);

  gst_init (&argc, &argv);
  gtk_init (&argc, &argv);

  if (argc) {
    gint arg;
    for (arg = 0; arg < argc; arg++) {
      if (!strcmp (argv[arg], "-a"))
        force_aspect = TRUE;
      else if (!strcmp (argv[arg], "-b"))
        draw_borders = TRUE;
      else if (!strcmp (argv[arg], "-v"))
        verbose = TRUE;
    }
  }

  /* prepare the pipeline */

  pipeline = gst_pipeline_new ("xvoverlay");
  src = gst_element_factory_make ("videotestsrc", NULL);
  sink = gst_element_factory_make ("xvimagesink", NULL);
  gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
  gst_element_link (src, sink);

  g_object_set (G_OBJECT (sink), "handle-events", FALSE,
      "force-aspect-ratio", force_aspect, "draw-borders", draw_borders, NULL);

  /* prepare the ui */

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  g_signal_connect (G_OBJECT (window), "delete-event",
      G_CALLBACK (window_closed), (gpointer) pipeline);
  gtk_window_set_default_size (GTK_WINDOW (window), 320, 240);

  video_window = gtk_drawing_area_new ();
  gtk_widget_set_double_buffered (video_window, FALSE);
  gtk_container_add (GTK_CONTAINER (window), video_window);

  /* show the gui and play */
  gtk_widget_show_all (window);

  /* realize window now so that the video window gets created and we can
   * obtain its XID before the pipeline is started up and the videosink
   * asks for the XID of the window to render onto */
  gtk_widget_realize (window);

210
211
  video_window_xwindow = gtk_widget_get_window (video_window);
  embed_xid = GDK_WINDOW_XID (video_window_xwindow);
212
213
214
215
216
217
218
  if (verbose) {
    g_print ("Window realize: got XID %lu\n", embed_xid);
  }

  /* we know what the video sink is in this case (xvimagesink), so we can
   * just set it directly here now (instead of waiting for a prepare-xwindow-id
   * element message in a sync bus handler and setting it there) */
219
  gst_x_overlay_set_window_handle (GST_X_OVERLAY (sink), embed_xid);
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247

  anim_state.overlay = GST_X_OVERLAY (sink);
  anim_state.widget = video_window;
  anim_state.w = 320;
  anim_state.h = 240;
  anim_state.a = 0.0;
  anim_state.p = (M_PI + M_PI) / 200.0;

  handle_resize_cb (video_window, NULL, sink);
  g_signal_connect (video_window, "configure-event",
      G_CALLBACK (handle_resize_cb), NULL);
  g_signal_connect (video_window, "expose-event",
      G_CALLBACK (handle_expose_cb), NULL);

  g_timeout_add (50, (GSourceFunc) animate_render_rect, NULL);

  /* run the pipeline */
  sret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
  if (sret == GST_STATE_CHANGE_FAILURE)
    gst_element_set_state (pipeline, GST_STATE_NULL);
  else {
    anim_state.running = TRUE;
    gtk_main ();
  }

  gst_object_unref (pipeline);
  return 0;
}