Commit 4e12363c authored by Matthew Waters's avatar Matthew Waters 🐨 Committed by GStreamer Merge Bot

glstereosplit: support gl display changes

parent de58d23b
......@@ -85,6 +85,7 @@ static gboolean stereosplit_src_query (GstPad * pad, GstObject * parent,
static gboolean stereosplit_src_event (GstPad * pad, GstObject * parent,
GstEvent * event);
static gboolean ensure_context (GstGLStereoSplit * self);
static gboolean ensure_context_unlocked (GstGLStereoSplit * self);
static void
gst_gl_stereosplit_class_init (GstGLStereoSplitClass * klass)
......@@ -136,6 +137,8 @@ gst_gl_stereosplit_init (GstGLStereoSplit * self)
gst_element_add_pad (GST_ELEMENT (self), self->right_pad);
self->viewconvert = gst_gl_view_convert_new ();
g_rec_mutex_init (&self->context_lock);
}
static void
......@@ -155,6 +158,8 @@ stereosplit_finalize (GstGLStereoSplit * self)
if (self->viewconvert)
gst_object_replace ((GstObject **) & self->viewconvert, NULL);
g_rec_mutex_clear (&self->context_lock);
klass->finalize ((GObject *) (self));
}
......@@ -162,13 +167,37 @@ static void
stereosplit_set_context (GstElement * element, GstContext * context)
{
GstGLStereoSplit *stereosplit = GST_GL_STEREOSPLIT (element);
GstGLDisplay *old_display, *new_display;
g_rec_mutex_lock (&stereosplit->context_lock);
GST_DEBUG_OBJECT (element, "set context of %" GST_PTR_FORMAT, context);
old_display =
stereosplit->display ? gst_object_ref (stereosplit->display) : NULL;
gst_gl_handle_set_context (element, context, &stereosplit->display,
&stereosplit->other_context);
if (stereosplit->display)
gst_gl_display_filter_gl_api (stereosplit->display, SUPPORTED_GL_APIS);
new_display =
stereosplit->display ? gst_object_ref (stereosplit->display) : NULL;
if (old_display && new_display) {
if (old_display != new_display) {
gst_clear_object (&stereosplit->context);
gst_gl_view_convert_set_context (stereosplit->viewconvert, NULL);
GST_INFO_OBJECT (stereosplit, "display changed to %" GST_PTR_FORMAT,
new_display);
if (ensure_context_unlocked (stereosplit)) {
gst_gl_view_convert_set_context (stereosplit->viewconvert,
stereosplit->context);
}
}
}
gst_clear_object (&old_display);
gst_clear_object (&new_display);
g_rec_mutex_unlock (&stereosplit->context_lock);
GST_ELEMENT_CLASS (gst_gl_stereosplit_parent_class)->set_context (element,
context);
}
......@@ -181,11 +210,13 @@ stereosplit_change_state (GstElement * element, GstStateChange transition)
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
g_rec_mutex_lock (&stereosplit->context_lock);
if (!gst_gl_ensure_element_data (element, &stereosplit->display,
&stereosplit->other_context))
return GST_STATE_CHANGE_FAILURE;
gst_gl_display_filter_gl_api (stereosplit->display, SUPPORTED_GL_APIS);
g_rec_mutex_unlock (&stereosplit->context_lock);
break;
default:
break;
......@@ -197,15 +228,10 @@ stereosplit_change_state (GstElement * element, GstStateChange transition)
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
if (stereosplit->other_context) {
gst_object_unref (stereosplit->other_context);
stereosplit->other_context = NULL;
}
if (stereosplit->display) {
gst_object_unref (stereosplit->display);
stereosplit->display = NULL;
}
g_rec_mutex_lock (&stereosplit->context_lock);
gst_clear_object (&stereosplit->other_context);
gst_clear_object (&stereosplit->display);
g_rec_mutex_unlock (&stereosplit->context_lock);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
stereosplit_reset (stereosplit);
......@@ -223,10 +249,6 @@ stereosplit_transform_caps (GstGLStereoSplit * self, GstPadDirection direction,
{
GstCaps *next_caps;
/* FIXME: Is this the right way to ensure a context here ? */
if (!ensure_context (self))
return NULL;
next_caps =
gst_gl_view_convert_transform_caps (self->viewconvert, direction, caps,
NULL);
......@@ -317,6 +339,11 @@ stereosplit_set_output_caps (GstGLStereoSplit * split, GstCaps * sinkcaps)
* left right pad to either left/mono and right/mono, as they prefer
*/
if (!ensure_context (split)) {
res = FALSE;
goto fail;
}
/* Calculate what downstream can collectively support */
left =
stereosplit_get_src_caps (split, split->left_pad,
......@@ -384,6 +411,7 @@ stereosplit_set_output_caps (GstGLStereoSplit * split, GstCaps * sinkcaps)
goto fail;
}
g_rec_mutex_lock (&split->context_lock);
gst_gl_view_convert_set_context (split->viewconvert, split->context);
tridcaps = gst_caps_make_writable (tridcaps);
......@@ -392,12 +420,14 @@ stereosplit_set_output_caps (GstGLStereoSplit * split, GstCaps * sinkcaps)
tridcaps = gst_caps_fixate (tridcaps);
if (!gst_gl_view_convert_set_caps (split->viewconvert, sinkcaps, tridcaps)) {
g_rec_mutex_unlock (&split->context_lock);
GST_ERROR_OBJECT (split, "Failed to set caps on converter");
goto fail;
}
/* FIXME: Provide left and right caps to do_bufferpool */
stereosplit_do_bufferpool (split, left);
g_rec_mutex_unlock (&split->context_lock);
res = TRUE;
......@@ -412,28 +442,46 @@ fail:
}
static gboolean
_find_local_gl_context (GstGLStereoSplit * split)
_find_local_gl_context_unlocked (GstGLStereoSplit * split)
{
GstGLContext *context = split->context;
if (gst_gl_query_local_gl_context (GST_ELEMENT (split), GST_PAD_SRC,
&split->context))
return TRUE;
&context)) {
if (context->display == split->display) {
split->context = context;
return TRUE;
}
if (context != split->context)
gst_clear_object (&context);
}
context = split->context;
if (gst_gl_query_local_gl_context (GST_ELEMENT (split), GST_PAD_SINK,
&split->context))
return TRUE;
&context)) {
if (context->display == split->display) {
split->context = context;
return TRUE;
}
if (context != split->context)
gst_clear_object (&context);
}
return FALSE;
}
static gboolean
ensure_context (GstGLStereoSplit * self)
ensure_context_unlocked (GstGLStereoSplit * self)
{
GError *error = NULL;
GST_DEBUG_OBJECT (self, "attempting to find an OpenGL context, existing %"
GST_PTR_FORMAT, self->context);
if (!gst_gl_ensure_element_data (self, &self->display, &self->other_context))
return FALSE;
gst_gl_display_filter_gl_api (self->display, SUPPORTED_GL_APIS);
_find_local_gl_context (self);
_find_local_gl_context_unlocked (self);
if (!self->context) {
GST_OBJECT_LOCK (self->display);
......@@ -460,6 +508,9 @@ ensure_context (GstGLStereoSplit * self)
goto unsupported_gl_api;
}
GST_INFO_OBJECT (self, "found OpenGL context %" GST_PTR_FORMAT,
self->context);
return TRUE;
unsupported_gl_api:
......@@ -484,10 +535,20 @@ context_error:
}
}
static gboolean
ensure_context (GstGLStereoSplit * self)
{
gboolean ret;
g_rec_mutex_lock (&self->context_lock);
ret = ensure_context_unlocked (self);
g_rec_mutex_unlock (&self->context_lock);
return ret;
}
static gboolean
stereosplit_decide_allocation (GstGLStereoSplit * self, GstQuery * query)
{
if (!ensure_context (self))
if (!ensure_context_unlocked (self))
return FALSE;
return TRUE;
......@@ -497,7 +558,6 @@ stereosplit_decide_allocation (GstGLStereoSplit * self, GstQuery * query)
static gboolean
stereosplit_propose_allocation (GstGLStereoSplit * self, GstQuery * query)
{
if (!gst_gl_ensure_element_data (self, &self->display, &self->other_context))
return FALSE;
......@@ -537,22 +597,32 @@ stereosplit_chain (GstPad * pad, GstGLStereoSplit * split, GstBuffer * buf)
GST_LOG_OBJECT (split, "chaining buffer %" GST_PTR_FORMAT, buf);
gst_buffer_ref (buf);
g_rec_mutex_lock (&split->context_lock);
if (gst_gl_view_convert_submit_input_buffer (split->viewconvert,
GST_BUFFER_IS_DISCONT (buf), buf) != GST_FLOW_OK) {
g_rec_mutex_unlock (&split->context_lock);
GST_ELEMENT_ERROR (split, RESOURCE, NOT_FOUND, ("%s",
"Failed to 3d convert buffer"),
("Could not get submit input buffer"));
gst_buffer_unref (buf);
return GST_FLOW_ERROR;
}
ret = gst_gl_view_convert_get_output (split->viewconvert, &split_buffer);
g_rec_mutex_unlock (&split->context_lock);
if (ret != GST_FLOW_OK) {
GST_ELEMENT_ERROR (split, RESOURCE, NOT_FOUND, ("%s",
"Failed to 3d convert buffer"), ("Could not get output buffer"));
gst_buffer_unref (buf);
return GST_FLOW_ERROR;
}
if (split_buffer == NULL)
if (split_buffer == NULL) {
gst_buffer_unref (buf);
return GST_FLOW_OK; /* Need another input buffer */
}
left = gst_buffer_new ();
gst_buffer_copy_into (left, buf,
......@@ -571,6 +641,7 @@ stereosplit_chain (GstPad * pad, GstGLStereoSplit * split, GstBuffer * buf)
gst_buffer_unref (left);
if (G_UNLIKELY (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED)) {
gst_buffer_unref (split_buffer);
gst_buffer_unref (buf);
return ret;
}
......@@ -587,6 +658,7 @@ stereosplit_chain (GstPad * pad, GstGLStereoSplit * split, GstBuffer * buf)
ret = gst_pad_push (split->right_pad, gst_buffer_ref (right));
gst_buffer_unref (right);
gst_buffer_unref (split_buffer);
gst_buffer_unref (buf);
return ret;
}
......
......@@ -50,6 +50,8 @@ struct _GstGLStereoSplit
GstGLContext *other_context;
GstGLViewConvert *viewconvert;
GRecMutex context_lock;
};
struct _GstGLStereoSplitClass
......
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