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gldisplay: tentative proper context collision detection

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Fixes
tee name=t ! queue ! gliamgesink t. ! queue ! glimagesink
This commit is contained in:
Matthew Waters 2015-03-15 12:58:26 +00:00 committed by Tim-Philipp Müller
parent 55dbb25dcc
commit 1c51ba395a
1 changed files with 39 additions and 10 deletions
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49
gst-libs/gst/gl/gstgldisplay.c
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@ -390,6 +390,37 @@ gst_gl_display_get_gl_context_for_thread (GstGLDisplay * display,
return context;
}
static gboolean
_check_collision (GstGLContext * context, GstGLContext * collision)
{
GThread *thread, *collision_thread;
gboolean ret = FALSE;
if (!context || !collision)
return FALSE;
thread = gst_gl_context_get_thread (context);
collision_thread = gst_gl_context_get_thread (collision);
if (!thread || !collision_thread) {
ret = FALSE;
goto out;
}
if (collision == context) {
ret = TRUE;
goto out;
}
out:
if (thread)
g_thread_unref (thread);
if (collision_thread)
g_thread_unref (collision_thread);
return ret;
}
/**
* gst_gl_display_add_context:
* @display: a #GstGLDisplay
@ -403,6 +434,7 @@ gst_gl_display_get_gl_context_for_thread (GstGLDisplay * display,
gboolean
gst_gl_display_add_context (GstGLDisplay * display, GstGLContext * context)
{
GstGLContext *collision = NULL;
GstGLDisplay *context_display;
gboolean ret = TRUE;
GThread *thread;
@ -419,16 +451,10 @@ gst_gl_display_add_context (GstGLDisplay * display, GstGLContext * context)
thread = gst_gl_context_get_thread (context);
if (thread) {
GstGLContext *collision =
_get_gl_context_for_thread_unlocked (display, thread);
g_thread_unref (thread);
if (collision) {
if (collision != context) {
gst_object_unref (collision);
ret = FALSE;
goto out;
}
gst_object_unref (collision);
collision = _get_gl_context_for_thread_unlocked (display, thread);
if (_check_collision (context, collision)) {
ret = FALSE;
goto out;
}
}
@ -438,6 +464,9 @@ gst_gl_display_add_context (GstGLDisplay * display, GstGLContext * context)
display->priv->contexts = g_list_prepend (display->priv->contexts, ref);
out:
if (collision)
gst_object_unref (collision);
GST_DEBUG_OBJECT (display, "%ssuccessfully inserted context %" GST_PTR_FORMAT,
ret ? "" : "un", context);
GST_OBJECT_UNLOCK (display);