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[203/906] use opengl for pixbuf resizing in glpixbufoverlay, start to work on properties

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This commit is contained in:
Filippo Argiolas 2008-08-20 10:02:02 +02:00 committed by Matthew Waters
parent 52a7e2dc6b
commit 7c2662d7e9
1 changed files with 48 additions and 24 deletions
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70
gst/gl/gstglpixbufoverlay.c
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@ -41,7 +41,10 @@ struct _GstGLPixbufOverlay
gboolean pbuf_has_changed;
GdkPixbuf *pixbuf;
gfloat width, height;
GLuint pbuftexture;
// gboolean stretch;
};
struct _GstGLPixbufOverlayClass
@ -82,8 +85,8 @@ enum
{
PROP_0,
PROP_LOCATION,
// PROP_STRETCH,
/* future properties? */
/* PROP_STRETCH, */
/* PROP_WIDTH, */
/* PROP_HEIGHT, */
/* PROP_XPOS, */
@ -136,6 +139,14 @@ gst_gl_pixbufoverlay_class_init (GstGLPixbufOverlayClass * klass)
"Location of the image",
"Location of the image",
NULL, G_PARAM_READWRITE));
/*
g_object_class_install_property (gobject_class,
PROP_STRETCH,
g_param_spec_boolean ("stretch",
"Stretch the image to texture size",
"Stretch the image to fit video texture size",
TRUE, G_PARAM_READWRITE));
*/
}
void
@ -143,6 +154,9 @@ gst_gl_pixbufoverlay_draw_texture (GstGLPixbufOverlay * pixbufoverlay, GLuint te
{
GstGLFilter *filter = GST_GL_FILTER (pixbufoverlay);
gfloat width = (gfloat) filter->width;
gfloat height = (gfloat) filter->height;
glActiveTexture (GL_TEXTURE0);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, tex);
@ -151,17 +165,22 @@ gst_gl_pixbufoverlay_draw_texture (GstGLPixbufOverlay * pixbufoverlay, GLuint te
glTexCoord2f (0.0, 0.0);
glVertex2f (-1.0, -1.0);
glTexCoord2f ((gfloat)filter->width, 0.0);
glTexCoord2f (width, 0.0);
glVertex2f (1.0, -1.0);
glTexCoord2f ((gfloat)filter->width, (gfloat)filter->height);
glTexCoord2f (width, height);
glVertex2f (1.0, 1.0);
glTexCoord2f (0.0, (gfloat)filter->height);
glTexCoord2f (0.0, height);
glVertex2f (-1.0, 1.0);
glEnd ();
if (pixbufoverlay->pbuftexture == 0) return;
// if (pixbufoverlay->stretch) {
width = pixbufoverlay->width;
height = pixbufoverlay->height;
// }
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
@ -172,11 +191,11 @@ gst_gl_pixbufoverlay_draw_texture (GstGLPixbufOverlay * pixbufoverlay, GLuint te
glTexCoord2f (0.0, 0.0);
glVertex2f (-1.0, -1.0);
glTexCoord2f ((gfloat)filter->width, 0.0);
glTexCoord2f (width, 0.0);
glVertex2f (1.0, -1.0);
glTexCoord2f ((gfloat)filter->width, (gfloat)filter->height);
glTexCoord2f (width, height);
glVertex2f (1.0, 1.0);
glTexCoord2f (0.0, (gfloat)filter->height);
glTexCoord2f (0.0, height);
glVertex2f (-1.0, 1.0);
glEnd ();
@ -192,6 +211,10 @@ gst_gl_pixbufoverlay_init (GstGLPixbufOverlay * pixbufoverlay,
pixbufoverlay->location = NULL;
pixbufoverlay->pixbuf = NULL;
pixbufoverlay->pbuftexture = 0;
pixbufoverlay->pbuftexture = 0;
pixbufoverlay->width = 0;
pixbufoverlay->height = 0;
// pixbufoverlay->stretch = TRUE;
pixbufoverlay->pbuf_has_changed = FALSE;
}
@ -213,6 +236,10 @@ gst_gl_pixbufoverlay_set_property (GObject * object, guint prop_id,
pixbufoverlay->pbuf_has_changed = TRUE;
pixbufoverlay->location = g_value_dup_string (value);
break;
/* case PROP_STRETCH:
pixbufoverlay->stretch = g_value_get_boolean (value);
break;
*/
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -229,6 +256,10 @@ gst_gl_pixbufoverlay_get_property (GObject * object, guint prop_id,
case PROP_LOCATION:
g_value_set_string (value, pixbufoverlay->location);
break;
/* case PROP_STRETCH:
g_value_set_boolean (value, pixbufoverlay->stretch);
break;
*/
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -255,13 +286,12 @@ gst_gl_pixbufoverlay_callback (gint width, gint height, guint texture, gpointer
static void init_pixbuf_texture (GstGLDisplay *display, gpointer data)
{
GstGLPixbufOverlay *pixbufoverlay = GST_GL_PIXBUFOVERLAY (data);
GstGLFilter *filter = GST_GL_FILTER (data);
glDeleteTextures (1, &pixbufoverlay->pbuftexture);
glGenTextures (1, &pixbufoverlay->pbuftexture);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, pixbufoverlay->pbuftexture);
glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA,
filter->width, filter->height, 0,
pixbufoverlay->width, pixbufoverlay->height, 0,
gdk_pixbuf_get_has_alpha (pixbufoverlay->pixbuf) ? GL_RGBA : GL_RGB,
GL_UNSIGNED_BYTE, gdk_pixbuf_get_pixels (pixbufoverlay->pixbuf));
}
@ -271,24 +301,18 @@ gst_gl_pixbufoverlay_filter (GstGLFilter* filter, GstGLBuffer* inbuf,
GstGLBuffer* outbuf)
{
GstGLPixbufOverlay* pixbufoverlay = GST_GL_PIXBUFOVERLAY(filter);
GdkPixbuf *pixbuf;
GError *error = NULL;
if (pixbufoverlay->pbuf_has_changed && (pixbufoverlay->location != NULL)) {
pixbuf = gdk_pixbuf_new_from_file (pixbufoverlay->location, &error);
if (pixbuf) {
pixbufoverlay->pixbuf = gdk_pixbuf_scale_simple (pixbuf,
filter->width,
filter->height,
GDK_INTERP_BILINEAR);
gdk_pixbuf_unref (pixbuf);
if (pixbufoverlay->pixbuf != NULL) {
gst_gl_display_thread_add (filter->display, init_pixbuf_texture, pixbufoverlay);
gdk_pixbuf_unref (pixbufoverlay->pixbuf);
}
pixbufoverlay->pixbuf = gdk_pixbuf_new_from_file (pixbufoverlay->location, &error);
if (pixbufoverlay->pixbuf != NULL) {
pixbufoverlay->width = (gfloat) gdk_pixbuf_get_width (pixbufoverlay->pixbuf);
pixbufoverlay->height = (gfloat) gdk_pixbuf_get_height (pixbufoverlay->pixbuf);
gst_gl_display_thread_add (filter->display, init_pixbuf_texture, pixbufoverlay);
gdk_pixbuf_unref (pixbufoverlay->pixbuf);
} else {
if (error != NULL && error->message != NULL)
g_warning ("unable to load %s: %s", pixbufoverlay->location, error->message);
if (error != NULL && error->message != NULL)
g_warning ("unable to load %s: %s", pixbufoverlay->location, error->message);
}
pixbufoverlay->pbuf_has_changed = FALSE;
}