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gl/utils: add x11 GstContext handling

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=726360
This commit is contained in:
Matthew Waters 2014-03-14 19:03:36 +01:00 committed by Tim-Philipp Müller
parent 1732e378f1
commit f64292325d
1 changed files with 90 additions and 14 deletions
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104
gst-libs/gst/gl/gstglutils.c
View file

@ -28,6 +28,10 @@
#include "gl.h"
#include "gstglutils.h"
#if GST_GL_HAVE_WINDOW_X11
#include <gst/gl/x11/gstgldisplay_x11.h>
#endif
#ifndef GL_FRAMEBUFFER_UNDEFINED
#define GL_FRAMEBUFFER_UNDEFINED 0x8219
#endif
@ -422,30 +426,26 @@ run_context_query (GstElement * element, GstQuery * query,
return g_value_get_boolean (&res);
}
static void
gst_gl_display_context_prepare (GstElement * element,
GstGLDisplay ** display_ptr)
GstQuery *
_gst_gl_display_context_query (GstElement * element,
GstGLDisplay ** display_ptr, const gchar * display_type)
{
GstContext *ctxt;
GstQuery *query;
if (!GST_CAT_CONTEXT)
GST_DEBUG_CATEGORY_GET (GST_CAT_CONTEXT, "GST_CONTEXT");
GstContext *ctxt;
/* 2a) Query downstream with GST_QUERY_CONTEXT for the context and
* check if downstream already has a context of the specific type
* 2b) Query upstream as above.
*/
ctxt = NULL;
query = gst_query_new_context (GST_GL_DISPLAY_CONTEXT_TYPE);
query = gst_query_new_context (display_type);
if (run_context_query (element, query, GST_PAD_SRC)) {
gst_query_parse_context (query, &ctxt);
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
"found context (%p) in downstream query", ctxt);
gst_query_parse_context (query, &ctxt);
} else if (run_context_query (element, query, GST_PAD_SINK)) {
gst_query_parse_context (query, &ctxt);
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
"found context (%p) in upstream query", ctxt);
gst_query_parse_context (query, &ctxt);
} else {
/* 3) Post a GST_MESSAGE_NEED_CONTEXT message on the bus with
* the required context type and afterwards check if a
@ -467,12 +467,51 @@ gst_gl_display_context_prepare (GstElement * element,
* GstElement::set_context() with the required context in which the element
* is required to update the display_ptr or call gst_gl_handle_set_context().
*/
if (ctxt) {
if (gst_context_has_context_type (ctxt, GST_GL_DISPLAY_CONTEXT_TYPE)) {
gst_context_get_gl_display (ctxt, display_ptr);
return query;
}
static void
gst_gl_display_context_prepare (GstElement * element,
GstGLDisplay ** display_ptr)
{
GstContext *ctxt;
GstQuery *query;
if (!GST_CAT_CONTEXT)
GST_DEBUG_CATEGORY_GET (GST_CAT_CONTEXT, "GST_CONTEXT");
query =
_gst_gl_display_context_query (element, display_ptr,
GST_GL_DISPLAY_CONTEXT_TYPE);
gst_query_parse_context (query, &ctxt);
if (ctxt && gst_context_has_context_type (ctxt, GST_GL_DISPLAY_CONTEXT_TYPE)) {
gst_context_get_gl_display (ctxt, display_ptr);
if (*display_ptr)
goto out;
}
gst_query_unref (query);
#if GST_GL_HAVE_WINDOW_X11
query =
_gst_gl_display_context_query (element, display_ptr,
"gst.x11.display.handle");
gst_query_parse_context (query, &ctxt);
if (ctxt && gst_context_has_context_type (ctxt, "gst.x11.display.handle")) {
const GstStructure *s;
Display *display;
s = gst_context_get_structure (ctxt);
if (gst_structure_get (s, "display", G_TYPE_POINTER, &display, NULL)
&& display) {
*display_ptr =
(GstGLDisplay *) gst_gl_display_x11_new_with_display (display);
goto out;
}
}
#endif
out:
gst_query_unref (query);
}
@ -550,6 +589,17 @@ gst_gl_handle_set_context (GstElement * element, GstContext * context,
return FALSE;
}
}
#if GST_GL_HAVE_WINDOW_X11
else if (g_strcmp0 (context_type, "gst.x11.display.handle") == 0) {
const GstStructure *s;
Display *display;
s = gst_context_get_structure (context);
if (gst_structure_get (s, "display", G_TYPE_POINTER, &display, NULL))
replacement =
(GstGLDisplay *) gst_gl_display_x11_new_with_display (display);
}
#endif
if (replacement)
gst_object_replace ((GstObject **) display, (GstObject *) replacement);
@ -586,6 +636,32 @@ gst_gl_handle_context_query (GstElement * element, GstQuery * query,
res = *display != NULL;
}
#if GST_GL_HAVE_WINDOW_X11
else if (g_strcmp0 (context_type, "gst.x11.display.handle") == 0) {
GstStructure *s;
Display *x11_display = NULL;
gst_query_parse_context (query, &old_context);
if (old_context)
context = gst_context_copy (old_context);
else
context = gst_context_new ("gst.x11.display.handle", TRUE);
if (*display
&& ((*display)->type & GST_GL_DISPLAY_TYPE_X11) ==
GST_GL_DISPLAY_TYPE_X11)
x11_display = (Display *) gst_gl_display_get_handle (*display);
s = gst_context_writable_structure (context);
gst_structure_set (s, "display", G_TYPE_POINTER, x11_display, NULL);
gst_query_set_context (query, context);
gst_context_unref (context);
res = x11_display != NULL;
}
#endif
return res;
}