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[375/906] gloverlay: can control image size and position

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Fix bug #591591
This commit is contained in:
Anthony Violo 2009-09-02 10:06:36 +02:00 committed by Matthew Waters
parent 586604e2e6
commit a86d07acca
2 changed files with 64 additions and 10 deletions
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71
gst/gl/gstgloverlay.c
View file

@ -73,12 +73,9 @@ enum
{
PROP_0,
PROP_LOCATION,
// PROP_STRETCH,
/* future properties? */
/* PROP_WIDTH, */
/* PROP_HEIGHT, */
/* PROP_XPOS, */
/* PROP_YPOS */
PROP_XPOS,
PROP_YPOS,
PROP_SIZE
};
@ -128,6 +125,26 @@ gst_gl_overlay_class_init (GstGLOverlayClass * klass)
g_param_spec_string ("location",
"Location of the image",
"Location of the image", NULL, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_XPOS,
g_param_spec_int ("xpos",
"X position of overlay image in percents",
"X position of overlay image in percents",
0, 100, 0, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_YPOS,
g_param_spec_int ("ypos",
"Y position of overlay image in percents",
"Y position of overlay image in percents",
0, 100, 0, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_SIZE,
g_param_spec_int ("proportion",
"Relative size of overlay image, in percents",
"Relative size of iverlay image, in percents",
0, 100, 0, G_PARAM_READWRITE));
/*
g_object_class_install_property (gobject_class,
PROP_STRETCH,
@ -143,6 +160,9 @@ gst_gl_overlay_draw_texture (GstGLOverlay * overlay, GLuint tex)
{
GstGLFilter *filter = GST_GL_FILTER (overlay);
gfloat posx = 0.0;
gfloat posy = 0.0;
gfloat size = 0.0;
gfloat width = (gfloat) filter->width;
gfloat height = (gfloat) filter->height;
@ -179,14 +199,24 @@ gst_gl_overlay_draw_texture (GstGLOverlay * overlay, GLuint tex)
glBegin (GL_QUADS);
size = (overlay->size) / 50.0;
posx = (overlay->pos_x - 50.0) / 50.0;
posx =
(posx - (size / 2) < -1.00) ? (-1.0 + size / 2) : (posx + (size / 2) >
1.00) ? (1.0 - size / 2) : posx;
posy = (overlay->pos_y - 50.0) / 50.0;
posy =
(posy - (size / 2) < -1.00) ? (-1.0 + size / 2) : (posy + (size / 2) >
1.00) ? (1.0 - size / 2) : posy;
glTexCoord2f (0.0, 0.0);
glVertex2f (-1.0, -1.0);
glVertex2f (posx - (size / 2), posy - (size / 2));
glTexCoord2f (width, 0.0);
glVertex2f (1.0, -1.0);
glVertex2f (posx + (size / 2), posy - (size / 2));
glTexCoord2f (width, height);
glVertex2f (1.0, 1.0);
glVertex2f (posx + (size / 2), posy + (size / 2));
glTexCoord2f (0.0, height);
glVertex2f (-1.0, 1.0);
glVertex2f (posx - (size / 2), posy + (size / 2));
glEnd ();
@ -203,6 +233,9 @@ gst_gl_overlay_init (GstGLOverlay * overlay, GstGLOverlayClass * klass)
overlay->pbuftexture = 0;
overlay->width = 0;
overlay->height = 0;
overlay->pos_x = 0.0;
overlay->pos_y = 0.0;
overlay->size = 100;
// overlay->stretch = TRUE;
overlay->pbuf_has_changed = FALSE;
}
@ -226,6 +259,15 @@ gst_gl_overlay_set_property (GObject * object, guint prop_id,
overlay->pbuf_has_changed = TRUE;
overlay->location = g_value_dup_string (value);
break;
case PROP_XPOS:
overlay->pos_x = g_value_get_int (value);
break;
case PROP_YPOS:
overlay->pos_y = g_value_get_int (value);
break;
case PROP_SIZE:
overlay->size = g_value_get_int (value);
break;
/* case PROP_STRETCH:
overlay->stretch = g_value_get_boolean (value);
break;
@ -246,6 +288,15 @@ gst_gl_overlay_get_property (GObject * object, guint prop_id,
case PROP_LOCATION:
g_value_set_string (value, overlay->location);
break;
case PROP_XPOS:
g_value_set_int (value, overlay->pos_x);
break;
case PROP_YPOS:
g_value_set_int (value, overlay->pos_y);
break;
case PROP_SIZE:
g_value_set_int (value, overlay->size);
break;
/* case PROP_STRETCH:
g_value_set_boolean (value, overlay->stretch);
break;

3
gst/gl/gstgloverlay.h
View file

@ -40,6 +40,9 @@ struct _GstGLOverlay
gchar *location;
gboolean pbuf_has_changed;
gint8 pos_x;
gint8 pos_y;
guint8 size;
guchar *pixbuf;
gint width, height;
GLuint pbuftexture;