gstreamer/subprojects/gst-plugins-bad/ext/gtk/gstgtkwaylandsink.c

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/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
* Copyright (C) 2021 Collabora Ltd.
* @author George Kiagiadakis <george.kiagiadakis@collabora.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstgtkwaylandsink.h"
#include <gdk/gdk.h>
#include <gst/wayland/wayland.h>
#include "gstgtkutils.h"
#include "gtkgstwaylandwidget.h"
#ifdef GDK_WINDOWING_WAYLAND
#include <gdk/gdkwayland.h>
#else
#error "Wayland is not supported in GTK+"
#endif
#define GST_CAT_DEFAULT gst_debug_gtk_wayland_sink
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
#ifndef GST_CAPS_FEATURE_MEMORY_DMABUF
#define GST_CAPS_FEATURE_MEMORY_DMABUF "memory:DMABuf"
#endif
#define WL_VIDEO_FORMATS \
"{ BGRx, BGRA, RGBx, xBGR, xRGB, RGBA, ABGR, ARGB, RGB, BGR, " \
"RGB16, BGR16, YUY2, YVYU, UYVY, AYUV, NV12, NV21, NV16, NV61, " \
"YUV9, YVU9, Y41B, I420, YV12, Y42B, v308 }"
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (WL_VIDEO_FORMATS) ";"
GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_DMABUF,
WL_VIDEO_FORMATS))
);
static void gst_gtk_wayland_sink_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static void gst_gtk_wayland_sink_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_gtk_wayland_sink_finalize (GObject * object);
static GstStateChangeReturn gst_gtk_wayland_sink_change_state (GstElement *
element, GstStateChange transition);
static gboolean gst_gtk_wayland_sink_event (GstBaseSink * sink,
GstEvent * event);
static GstCaps *gst_gtk_wayland_sink_get_caps (GstBaseSink * bsink,
GstCaps * filter);
static gboolean gst_gtk_wayland_sink_set_caps (GstBaseSink * bsink,
GstCaps * caps);
static gboolean gst_gtk_wayland_sink_propose_allocation (GstBaseSink * bsink,
GstQuery * query);
static GstFlowReturn gst_gtk_wayland_sink_show_frame (GstVideoSink * bsink,
GstBuffer * buffer);
static void gst_gtk_wayland_sink_set_rotate_method (GstGtkWaylandSink * self,
GstVideoOrientationMethod method, gboolean from_tag);
static void
gst_gtk_wayland_sink_navigation_interface_init (GstNavigationInterface * iface);
static void
calculate_adjustment (GtkWidget * start_widget, GtkAllocation * allocation);
enum
{
PROP_0,
PROP_WIDGET,
PROP_DISPLAY,
PROP_ROTATE_METHOD
};
typedef struct _GstGtkWaylandSinkPrivate
{
GtkWidget *gtk_widget;
GtkWidget *gtk_window;
gulong gtk_window_destroy_id;
/* from GstWaylandSink */
GMutex display_lock;
GstWlDisplay *display;
GstWlWindow *wl_window;
gboolean is_wl_window_sync;
GstBufferPool *pool;
GstBuffer *last_buffer;
gboolean use_dmabuf;
gboolean video_info_changed;
GstVideoInfo video_info;
gboolean redraw_pending;
GMutex render_lock;
GstVideoOrientationMethod sink_rotate_method;
GstVideoOrientationMethod tag_rotate_method;
GstVideoOrientationMethod current_rotate_method;
struct wl_callback *callback;
} GstGtkWaylandSinkPrivate;
#define gst_gtk_wayland_sink_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstGtkWaylandSink, gst_gtk_wayland_sink,
GST_TYPE_VIDEO_SINK, G_ADD_PRIVATE (GstGtkWaylandSink)
G_IMPLEMENT_INTERFACE (GST_TYPE_NAVIGATION,
gst_gtk_wayland_sink_navigation_interface_init)
GST_DEBUG_CATEGORY_INIT (gst_debug_gtk_wayland_sink,
"gtkwaylandsink", 0, "Gtk Wayland Video sink");
);
GST_ELEMENT_REGISTER_DEFINE (gtkwaylandsink, "gtkwaylandsink",
GST_RANK_MARGINAL, GST_TYPE_GTK_WAYLAND_SINK);
static void
gst_gtk_wayland_sink_class_init (GstGtkWaylandSinkClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *gstelement_class = (GstElementClass *) klass;
GstBaseSinkClass *gstbasesink_class = (GstBaseSinkClass *) klass;
GstVideoSinkClass *gstvideosink_class = (GstVideoSinkClass *) klass;
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_gtk_wayland_sink_finalize);
gobject_class->get_property =
GST_DEBUG_FUNCPTR (gst_gtk_wayland_sink_get_property);
gobject_class->set_property =
GST_DEBUG_FUNCPTR (gst_gtk_wayland_sink_set_property);
g_object_class_install_property (gobject_class, PROP_WIDGET,
g_param_spec_object ("widget", "Gtk Widget",
"The GtkWidget to place in the widget hierarchy "
"(must only be get from the GTK main thread)",
GTK_TYPE_WIDGET,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS |
GST_PARAM_DOC_SHOW_DEFAULT));
g_object_class_install_property (gobject_class, PROP_ROTATE_METHOD,
g_param_spec_enum ("rotate-method",
"rotate method",
"rotate method",
GST_TYPE_VIDEO_ORIENTATION_METHOD, GST_VIDEO_ORIENTATION_IDENTITY,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_gtk_wayland_sink_change_state);
gst_element_class_set_metadata (gstelement_class, "Gtk Wayland Video Sink",
"Sink/Video",
"A video sink that renders to a GtkWidget using Wayland API",
"George Kiagiadakis <george.kiagiadakis@collabora.com>");
gst_element_class_add_static_pad_template (gstelement_class, &sink_template);
gstbasesink_class->event = GST_DEBUG_FUNCPTR (gst_gtk_wayland_sink_event);
gstbasesink_class->get_caps =
GST_DEBUG_FUNCPTR (gst_gtk_wayland_sink_get_caps);
gstbasesink_class->set_caps =
GST_DEBUG_FUNCPTR (gst_gtk_wayland_sink_set_caps);
gstbasesink_class->propose_allocation =
GST_DEBUG_FUNCPTR (gst_gtk_wayland_sink_propose_allocation);
gstvideosink_class->show_frame =
GST_DEBUG_FUNCPTR (gst_gtk_wayland_sink_show_frame);
}
static void
gst_gtk_wayland_sink_init (GstGtkWaylandSink * self)
{
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
g_mutex_init (&priv->display_lock);
g_mutex_init (&priv->render_lock);
}
static void
gst_gtk_wayland_sink_finalize (GObject * object)
{
GstGtkWaylandSink *self = GST_GTK_WAYLAND_SINK (object);
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
g_clear_object (&priv->gtk_widget);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
widget_destroy_cb (GtkWidget * widget, GstGtkWaylandSink * self)
{
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
GST_OBJECT_LOCK (self);
g_clear_object (&priv->gtk_widget);
GST_OBJECT_UNLOCK (self);
}
static void
window_destroy_cb (GtkWidget * widget, GstGtkWaylandSink * self)
{
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
GST_OBJECT_LOCK (self);
priv->gtk_window = NULL;
GST_OBJECT_UNLOCK (self);
GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND, ("Window was closed"), (NULL));
}
static gboolean
widget_size_allocate_cb (GtkWidget * widget, GtkAllocation * allocation,
gpointer user_data)
{
GstGtkWaylandSink *self = user_data;
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
struct wl_subsurface *window_subsurface;
g_mutex_lock (&priv->render_lock);
priv->is_wl_window_sync = TRUE;
window_subsurface = gst_wl_window_get_subsurface (priv->wl_window);
if (window_subsurface)
wl_subsurface_set_sync (window_subsurface);
calculate_adjustment (priv->gtk_widget, allocation);
GST_DEBUG_OBJECT (self, "window geometry changed to (%d, %d) %d x %d",
allocation->x, allocation->y, allocation->width, allocation->height);
gst_wl_window_set_render_rectangle (priv->wl_window, allocation->x,
allocation->y, allocation->width, allocation->height);
g_mutex_unlock (&priv->render_lock);
return FALSE;
}
static gboolean
window_after_after_paint_cb (GtkWidget * widget, gpointer user_data)
{
GstGtkWaylandSink *self = user_data;
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
g_mutex_lock (&priv->render_lock);
if (priv->is_wl_window_sync) {
struct wl_subsurface *window_subsurface;
priv->is_wl_window_sync = FALSE;
window_subsurface = gst_wl_window_get_subsurface (priv->wl_window);
if (window_subsurface)
wl_subsurface_set_desync (window_subsurface);
}
g_mutex_unlock (&priv->render_lock);
return FALSE;
}
static GtkWidget *
gst_gtk_wayland_sink_get_widget (GstGtkWaylandSink * self)
{
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
if (priv->gtk_widget != NULL)
return g_object_ref (priv->gtk_widget);
/* Ensure GTK is initialized, this has no side effect if it was already
* initialized. Also, we do that lazily, so the application can be first */
if (!gtk_init_check (NULL, NULL)) {
GST_INFO_OBJECT (self, "Could not ensure GTK initialization.");
return NULL;
}
priv->gtk_widget = gtk_gst_wayland_widget_new ();
gtk_gst_base_widget_set_element (GTK_GST_BASE_WIDGET (priv->gtk_widget),
GST_ELEMENT (self));
/* Take the floating ref, other wise the destruction of the container will
* make this widget disappear possibly before we are done. */
g_object_ref_sink (priv->gtk_widget);
g_signal_connect_object (priv->gtk_widget, "destroy",
G_CALLBACK (widget_destroy_cb), self, 0);
return g_object_ref (priv->gtk_widget);
}
static GtkWidget *
gst_gtk_wayland_sink_acquire_widget (GstGtkWaylandSink * self)
{
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
gpointer widget = NULL;
GST_OBJECT_LOCK (self);
if (priv->gtk_widget != NULL)
widget = g_object_ref (priv->gtk_widget);
GST_OBJECT_UNLOCK (self);
if (!widget)
widget =
gst_gtk_invoke_on_main ((GThreadFunc) gst_gtk_wayland_sink_get_widget,
self);
return widget;
}
static gboolean
gst_gtk_wayland_sink_event (GstBaseSink * sink, GstEvent * event)
{
GstGtkWaylandSink *self = GST_GTK_WAYLAND_SINK (sink);
GstTagList *taglist;
GstVideoOrientationMethod method;
gboolean ret;
GST_DEBUG_OBJECT (self, "handling %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_TAG:
gst_event_parse_tag (event, &taglist);
if (gst_video_orientation_from_tag (taglist, &method)) {
gst_gtk_wayland_sink_set_rotate_method (self, method, TRUE);
}
break;
default:
break;
}
ret = GST_BASE_SINK_CLASS (parent_class)->event (sink, event);
return ret;
}
static void
gst_gtk_wayland_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstGtkWaylandSink *self = GST_GTK_WAYLAND_SINK (object);
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
switch (prop_id) {
case PROP_WIDGET:
g_value_take_object (value, gst_gtk_wayland_sink_acquire_widget (self));
break;
case PROP_ROTATE_METHOD:
g_value_set_enum (value, priv->current_rotate_method);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_gtk_wayland_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstGtkWaylandSink *self = GST_GTK_WAYLAND_SINK (object);
switch (prop_id) {
case PROP_ROTATE_METHOD:
gst_gtk_wayland_sink_set_rotate_method (self, g_value_get_enum (value),
FALSE);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
calculate_adjustment (GtkWidget * widget, GtkAllocation * allocation)
{
GdkWindow *window;
gint wx, wy;
window = gtk_widget_get_window (widget);
gdk_window_get_origin (window, &wx, &wy);
allocation->x = wx;
allocation->y = wy;
}
static gboolean
scrollable_window_adjustment_changed_cb (GtkAdjustment * adjustment,
gpointer user_data)
{
GstGtkWaylandSink *self = user_data;
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
GtkAllocation allocation;
gtk_widget_get_allocation (priv->gtk_widget, &allocation);
calculate_adjustment (priv->gtk_widget, &allocation);
gst_wl_window_set_render_rectangle (priv->wl_window, allocation.x,
allocation.y, allocation.width, allocation.height);
return FALSE;
}
static void
setup_wl_window (GstGtkWaylandSink * self)
{
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
GdkWindow *gdk_window;
GdkFrameClock *gdk_frame_clock;
GtkAllocation allocation;
GtkWidget *widget;
g_mutex_lock (&priv->render_lock);
gdk_window = gtk_widget_get_window (priv->gtk_widget);
g_assert (gdk_window);
if (!priv->wl_window) {
struct wl_surface *wl_surface;
wl_surface = gdk_wayland_window_get_wl_surface (gdk_window);
GST_INFO_OBJECT (self, "setting window handle");
priv->wl_window = gst_wl_window_new_in_surface (priv->display,
wl_surface, &priv->render_lock);
gst_wl_window_set_rotate_method (priv->wl_window,
priv->current_rotate_method);
}
/* In order to position the subsurface correctly within a scrollable widget,
* we can not rely on the allocation alone but need to take the window
* origin into account
*/
widget = priv->gtk_widget;
do {
if (GTK_IS_SCROLLABLE (widget)) {
GtkAdjustment *hadjustment;
GtkAdjustment *vadjustment;
hadjustment = gtk_scrollable_get_hadjustment (GTK_SCROLLABLE (widget));
vadjustment = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (widget));
g_signal_connect (hadjustment, "value-changed",
G_CALLBACK (scrollable_window_adjustment_changed_cb), self);
g_signal_connect (vadjustment, "value-changed",
G_CALLBACK (scrollable_window_adjustment_changed_cb), self);
}
} while ((widget = gtk_widget_get_parent (widget)));
gtk_widget_get_allocation (priv->gtk_widget, &allocation);
calculate_adjustment (priv->gtk_widget, &allocation);
gst_wl_window_set_render_rectangle (priv->wl_window, allocation.x,
allocation.y, allocation.width, allocation.height);
/* Make subsurfaces syncronous during resizes.
* Unfortunately GTK/GDK does not provide easier to use signals.
*/
g_signal_connect (priv->gtk_widget, "size-allocate",
G_CALLBACK (widget_size_allocate_cb), self);
gdk_frame_clock = gdk_window_get_frame_clock (gdk_window);
g_signal_connect_after (gdk_frame_clock, "after-paint",
G_CALLBACK (window_after_after_paint_cb), self);
/* Ensure the base widget is initialized */
gtk_gst_base_widget_set_buffer (GTK_GST_BASE_WIDGET (priv->gtk_widget), NULL);
g_mutex_unlock (&priv->render_lock);
}
static void
window_initial_map_cb (GtkWidget * widget, gpointer user_data)
{
GstGtkWaylandSink *self = user_data;
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
setup_wl_window (self);
g_signal_handlers_disconnect_by_func (priv->gtk_widget,
window_initial_map_cb, self);
}
static void
gst_gtk_wayland_sink_navigation_send_event (GstNavigation * navigation,
GstEvent * event)
{
GstGtkWaylandSink *self = GST_GTK_WAYLAND_SINK (navigation);
GstPad *pad;
gdouble x, y;
event = gst_event_make_writable (event);
if (gst_navigation_event_get_coordinates (event, &x, &y)) {
GtkGstBaseWidget *widget =
GTK_GST_BASE_WIDGET (gst_gtk_wayland_sink_get_widget (self));
gdouble stream_x, stream_y;
if (widget == NULL) {
GST_ERROR_OBJECT (self, "Could not ensure GTK initialization.");
return;
}
gtk_gst_base_widget_display_size_to_stream_size (widget,
x, y, &stream_x, &stream_y);
gst_navigation_event_set_coordinates (event, stream_x, stream_y);
}
pad = gst_pad_get_peer (GST_VIDEO_SINK_PAD (self));
GST_TRACE_OBJECT (self, "navigation event %" GST_PTR_FORMAT,
gst_event_get_structure (event));
if (GST_IS_PAD (pad) && GST_IS_EVENT (event)) {
if (!gst_pad_send_event (pad, gst_event_ref (event))) {
/* If upstream didn't handle the event we'll post a message with it
* for the application in case it wants to do something with it */
gst_element_post_message (GST_ELEMENT_CAST (self),
gst_navigation_message_new_event (GST_OBJECT_CAST (self), event));
}
gst_event_unref (event);
gst_object_unref (pad);
}
}
static void
gst_gtk_wayland_sink_navigation_interface_init (GstNavigationInterface * iface)
{
iface->send_event_simple = gst_gtk_wayland_sink_navigation_send_event;
}
static gboolean
gst_gtk_wayland_sink_start_on_main (GstGtkWaylandSink * self)
{
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
GtkWidget *toplevel;
GdkDisplay *gdk_display;
struct wl_display *wl_display;
if ((toplevel = gst_gtk_wayland_sink_get_widget (self)) == NULL) {
GST_ERROR_OBJECT (self, "Could not ensure GTK initialization.");
return FALSE;
}
g_object_unref (toplevel);
/* After this point, priv->gtk_widget will always be set */
gdk_display = gtk_widget_get_display (priv->gtk_widget);
if (!GDK_IS_WAYLAND_DISPLAY (gdk_display)) {
GST_ERROR_OBJECT (self, "GDK is not using its wayland backend.");
return FALSE;
}
wl_display = gdk_wayland_display_get_wl_display (gdk_display);
priv->display = gst_wl_display_new_existing (wl_display, FALSE, NULL);
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (priv->gtk_widget));
if (!gtk_widget_is_toplevel (toplevel)) {
/* User did not add widget its own UI, let's popup a new GtkWindow to
* make gst-launch-1.0 work. */
priv->gtk_window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (priv->gtk_window), 640, 480);
gtk_window_set_title (GTK_WINDOW (priv->gtk_window),
"Gst GTK Wayland Sink");
gtk_container_add (GTK_CONTAINER (priv->gtk_window), toplevel);
priv->gtk_window_destroy_id = g_signal_connect (priv->gtk_window, "destroy",
G_CALLBACK (window_destroy_cb), self);
g_signal_connect (priv->gtk_widget, "map",
G_CALLBACK (window_initial_map_cb), self);
} else {
if (gtk_widget_get_mapped (priv->gtk_widget)) {
setup_wl_window (self);
} else {
g_signal_connect (priv->gtk_widget, "map",
G_CALLBACK (window_initial_map_cb), self);
}
}
return TRUE;
}
static gboolean
gst_gtk_wayland_sink_stop_on_main (GstGtkWaylandSink * self)
{
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
if (priv->gtk_window) {
if (priv->gtk_window_destroy_id)
g_signal_handler_disconnect (priv->gtk_window,
priv->gtk_window_destroy_id);
priv->gtk_window_destroy_id = 0;
gtk_widget_destroy (priv->gtk_window);
priv->gtk_window = NULL;
}
if (priv->gtk_widget) {
GtkWidget *widget;
GdkWindow *gdk_window;
g_signal_handlers_disconnect_by_func (priv->gtk_widget,
widget_size_allocate_cb, self);
widget = priv->gtk_widget;
do {
if (GTK_IS_SCROLLABLE (widget)) {
GtkAdjustment *hadjustment;
GtkAdjustment *vadjustment;
hadjustment = gtk_scrollable_get_hadjustment (GTK_SCROLLABLE (widget));
vadjustment = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (widget));
g_signal_handlers_disconnect_by_func (hadjustment,
scrollable_window_adjustment_changed_cb, self);
g_signal_handlers_disconnect_by_func (vadjustment,
scrollable_window_adjustment_changed_cb, self);
}
} while ((widget = gtk_widget_get_parent (widget)));
gdk_window = gtk_widget_get_window (priv->gtk_widget);
if (gdk_window) {
GdkFrameClock *gdk_frame_clock;
gdk_frame_clock = gdk_window_get_frame_clock (gdk_window);
g_signal_handlers_disconnect_by_func (gdk_frame_clock,
window_after_after_paint_cb, self);
}
}
return TRUE;
}
static void
gst_gtk_widget_show_all_and_unref (GtkWidget * widget)
{
gtk_widget_show_all (widget);
g_object_unref (widget);
}
static GstStateChangeReturn
gst_gtk_wayland_sink_change_state (GstElement * element,
GstStateChange transition)
{
GstGtkWaylandSink *self = GST_GTK_WAYLAND_SINK (element);
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_gtk_invoke_on_main ((GThreadFunc)
gst_gtk_wayland_sink_start_on_main, element))
return GST_STATE_CHANGE_FAILURE;
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
{
GtkWindow *window = NULL;
GST_OBJECT_LOCK (self);
if (priv->gtk_window)
window = g_object_ref (GTK_WINDOW (priv->gtk_window));
GST_OBJECT_UNLOCK (self);
if (window)
gst_gtk_invoke_on_main ((GThreadFunc) gst_gtk_widget_show_all_and_unref,
window);
break;
}
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret != GST_STATE_CHANGE_SUCCESS)
return ret;
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
case GST_STATE_CHANGE_NULL_TO_NULL:
gst_gtk_invoke_on_main ((GThreadFunc)
gst_gtk_wayland_sink_stop_on_main, element);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_buffer_replace (&priv->last_buffer, NULL);
if (priv->wl_window) {
/* remove buffer from surface, show nothing */
gst_wl_window_render (priv->wl_window, NULL, NULL);
}
g_mutex_lock (&priv->render_lock);
if (priv->callback) {
wl_callback_destroy (priv->callback);
priv->callback = NULL;
}
priv->redraw_pending = FALSE;
g_mutex_unlock (&priv->render_lock);
break;
default:
break;
}
return ret;
}
static GstCaps *
gst_gtk_wayland_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
{
GstGtkWaylandSink *self = GST_GTK_WAYLAND_SINK (bsink);
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
GstCaps *caps;
caps = gst_pad_get_pad_template_caps (GST_VIDEO_SINK_PAD (self));
caps = gst_caps_make_writable (caps);
g_mutex_lock (&priv->display_lock);
if (priv->display) {
GValue shm_list = G_VALUE_INIT, dmabuf_list = G_VALUE_INIT;
GValue value = G_VALUE_INIT;
GArray *formats;
gint i;
guint fmt;
GstVideoFormat gfmt;
g_value_init (&shm_list, GST_TYPE_LIST);
g_value_init (&dmabuf_list, GST_TYPE_LIST);
/* Add corresponding shm formats */
formats = gst_wl_display_get_shm_formats (priv->display);
for (i = 0; i < formats->len; i++) {
fmt = g_array_index (formats, uint32_t, i);
gfmt = gst_wl_shm_format_to_video_format (fmt);
if (gfmt != GST_VIDEO_FORMAT_UNKNOWN) {
g_value_init (&value, G_TYPE_STRING);
g_value_set_static_string (&value, gst_video_format_to_string (gfmt));
gst_value_list_append_and_take_value (&shm_list, &value);
}
}
gst_structure_take_value (gst_caps_get_structure (caps, 0), "format",
&shm_list);
/* Add corresponding dmabuf formats */
formats = gst_wl_display_get_dmabuf_formats (priv->display);
for (i = 0; i < formats->len; i++) {
fmt = g_array_index (formats, uint32_t, i);
gfmt = gst_wl_dmabuf_format_to_video_format (fmt);
if (gfmt != GST_VIDEO_FORMAT_UNKNOWN) {
g_value_init (&value, G_TYPE_STRING);
g_value_set_static_string (&value, gst_video_format_to_string (gfmt));
gst_value_list_append_and_take_value (&dmabuf_list, &value);
}
}
gst_structure_take_value (gst_caps_get_structure (caps, 1), "format",
&dmabuf_list);
GST_DEBUG_OBJECT (self, "display caps: %" GST_PTR_FORMAT, caps);
}
g_mutex_unlock (&priv->display_lock);
if (filter) {
GstCaps *intersection;
intersection =
gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (caps);
caps = intersection;
}
return caps;
}
static GstBufferPool *
gst_gtk_wayland_create_pool (GstGtkWaylandSink * self, GstCaps * caps)
{
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
GstBufferPool *pool = NULL;
GstStructure *structure;
gsize size = priv->video_info.size;
GstAllocator *alloc;
pool = gst_wl_video_buffer_pool_new ();
structure = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (structure, caps, size, 2, 0);
alloc = gst_wl_shm_allocator_get ();
gst_buffer_pool_config_set_allocator (structure, alloc, NULL);
if (!gst_buffer_pool_set_config (pool, structure)) {
g_object_unref (pool);
pool = NULL;
}
g_object_unref (alloc);
return pool;
}
static gboolean
gst_gtk_wayland_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
{
GstGtkWaylandSink *self = GST_GTK_WAYLAND_SINK (bsink);
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
gboolean use_dmabuf;
GstVideoFormat format;
GST_DEBUG_OBJECT (self, "set caps %" GST_PTR_FORMAT, caps);
/* extract info from caps */
if (!gst_video_info_from_caps (&priv->video_info, caps))
goto invalid_format;
format = GST_VIDEO_INFO_FORMAT (&priv->video_info);
priv->video_info_changed = TRUE;
/* create a new pool for the new caps */
if (priv->pool)
gst_object_unref (priv->pool);
priv->pool = gst_gtk_wayland_create_pool (self, caps);
use_dmabuf = gst_caps_features_contains (gst_caps_get_features (caps, 0),
GST_CAPS_FEATURE_MEMORY_DMABUF);
/* validate the format base on the memory type. */
if (use_dmabuf) {
if (!gst_wl_display_check_format_for_dmabuf (priv->display, format))
goto unsupported_format;
} else if (!gst_wl_display_check_format_for_shm (priv->display, format)) {
goto unsupported_format;
}
GST_OBJECT_LOCK (self);
if (priv->gtk_widget == NULL) {
GST_OBJECT_UNLOCK (self);
GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
("Output widget was destroyed"), (NULL));
return FALSE;
}
if (!gtk_gst_base_widget_set_format (GTK_GST_BASE_WIDGET (priv->gtk_widget),
&priv->video_info)) {
GST_OBJECT_UNLOCK (self);
return FALSE;
}
GST_OBJECT_UNLOCK (self);
priv->use_dmabuf = use_dmabuf;
return TRUE;
invalid_format:
{
GST_ERROR_OBJECT (self,
"Could not locate image format from caps %" GST_PTR_FORMAT, caps);
return FALSE;
}
unsupported_format:
{
GST_ERROR_OBJECT (self, "Format %s is not available on the display",
gst_video_format_to_string (format));
return FALSE;
}
}
static gboolean
gst_gtk_wayland_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
{
GstGtkWaylandSink *self = GST_GTK_WAYLAND_SINK (bsink);
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
GstCaps *caps;
GstBufferPool *pool = NULL;
gboolean need_pool;
GstAllocator *alloc;
gst_query_parse_allocation (query, &caps, &need_pool);
if (need_pool)
pool = gst_gtk_wayland_create_pool (self, caps);
gst_query_add_allocation_pool (query, pool, priv->video_info.size, 2, 0);
if (pool)
g_object_unref (pool);
alloc = gst_wl_shm_allocator_get ();
gst_query_add_allocation_param (query, alloc, NULL);
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
g_object_unref (alloc);
return TRUE;
}
static void
frame_redraw_callback (void *data, struct wl_callback *callback, uint32_t time)
{
GstGtkWaylandSink *self = data;
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
GST_LOG_OBJECT (self, "frame_redraw_cb");
g_mutex_lock (&priv->render_lock);
priv->redraw_pending = FALSE;
if (priv->callback) {
wl_callback_destroy (callback);
priv->callback = NULL;
}
g_mutex_unlock (&priv->render_lock);
}
static const struct wl_callback_listener frame_callback_listener = {
frame_redraw_callback
};
/* must be called with the render lock */
static void
render_last_buffer (GstGtkWaylandSink * self, gboolean redraw)
{
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
GstWlBuffer *wlbuffer;
const GstVideoInfo *info = NULL;
struct wl_surface *surface;
struct wl_callback *callback;
wlbuffer = gst_buffer_get_wl_buffer (priv->display, priv->last_buffer);
surface = gst_wl_window_get_wl_surface (priv->wl_window);
priv->redraw_pending = TRUE;
callback = wl_surface_frame (surface);
priv->callback = callback;
wl_callback_add_listener (callback, &frame_callback_listener, self);
if (G_UNLIKELY (priv->video_info_changed && !redraw)) {
info = &priv->video_info;
priv->video_info_changed = FALSE;
}
gst_wl_window_render (priv->wl_window, wlbuffer, info);
}
static GstFlowReturn
gst_gtk_wayland_sink_show_frame (GstVideoSink * vsink, GstBuffer * buffer)
{
GstGtkWaylandSink *self = GST_GTK_WAYLAND_SINK (vsink);
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
GstBuffer *to_render;
GstWlBuffer *wlbuffer;
GstVideoMeta *vmeta;
GstVideoFormat format;
GstVideoInfo old_vinfo;
GstMemory *mem;
struct wl_buffer *wbuf = NULL;
GstFlowReturn ret = GST_FLOW_OK;
g_mutex_lock (&priv->render_lock);
GST_LOG_OBJECT (self, "render buffer %" GST_PTR_FORMAT "", buffer);
if (!priv->wl_window) {
GST_LOG_OBJECT (self,
"buffer %" GST_PTR_FORMAT " dropped (waiting for window)", buffer);
goto done;
}
/* drop buffers until we get a frame callback */
if (priv->redraw_pending) {
GST_LOG_OBJECT (self, "buffer %" GST_PTR_FORMAT " dropped (redraw pending)",
buffer);
goto done;
}
/* make sure that the application has called set_render_rectangle() */
if (G_UNLIKELY (gst_wl_window_get_render_rectangle (priv->wl_window)->w == 0))
goto no_window_size;
wlbuffer = gst_buffer_get_wl_buffer (priv->display, buffer);
if (G_LIKELY (wlbuffer &&
gst_wl_buffer_get_display (wlbuffer) == priv->display)) {
GST_LOG_OBJECT (self,
"buffer %" GST_PTR_FORMAT " has a wl_buffer from our display, "
"writing directly", buffer);
to_render = buffer;
goto render;
}
/* update video info from video meta */
mem = gst_buffer_peek_memory (buffer, 0);
old_vinfo = priv->video_info;
vmeta = gst_buffer_get_video_meta (buffer);
if (vmeta) {
gint i;
for (i = 0; i < vmeta->n_planes; i++) {
priv->video_info.offset[i] = vmeta->offset[i];
priv->video_info.stride[i] = vmeta->stride[i];
}
priv->video_info.size = gst_buffer_get_size (buffer);
}
GST_LOG_OBJECT (self,
"buffer %" GST_PTR_FORMAT " does not have a wl_buffer from our "
"display, creating it", buffer);
format = GST_VIDEO_INFO_FORMAT (&priv->video_info);
if (gst_wl_display_check_format_for_dmabuf (priv->display, format)) {
guint i, nb_dmabuf = 0;
for (i = 0; i < gst_buffer_n_memory (buffer); i++)
if (gst_is_dmabuf_memory (gst_buffer_peek_memory (buffer, i)))
nb_dmabuf++;
if (nb_dmabuf && (nb_dmabuf == gst_buffer_n_memory (buffer)))
wbuf = gst_wl_linux_dmabuf_construct_wl_buffer (buffer, priv->display,
&priv->video_info);
}
if (!wbuf && gst_wl_display_check_format_for_shm (priv->display, format)) {
if (gst_buffer_n_memory (buffer) == 1 && gst_is_fd_memory (mem))
wbuf = gst_wl_shm_memory_construct_wl_buffer (mem, priv->display,
&priv->video_info);
/* If nothing worked, copy into our internal pool */
if (!wbuf) {
GstVideoFrame src, dst;
GstVideoInfo src_info = priv->video_info;
/* rollback video info changes */
priv->video_info = old_vinfo;
/* we don't know how to create a wl_buffer directly from the provided
* memory, so we have to copy the data to shm memory that we know how
* to handle... */
GST_LOG_OBJECT (self,
"buffer %" GST_PTR_FORMAT " cannot have a wl_buffer, "
"copying to wl_shm memory", buffer);
/* priv->pool always exists (created in set_caps), but it may not
* be active if upstream is not using it */
if (!gst_buffer_pool_is_active (priv->pool)) {
GstStructure *config;
GstCaps *caps;
config = gst_buffer_pool_get_config (priv->pool);
gst_buffer_pool_config_get_params (config, &caps, NULL, NULL, NULL);
/* revert back to default strides and offsets */
gst_video_info_from_caps (&priv->video_info, caps);
gst_buffer_pool_config_set_params (config, caps, priv->video_info.size,
2, 0);
/* This is a video pool, it should not fail with basic settings */
if (!gst_buffer_pool_set_config (priv->pool, config) ||
!gst_buffer_pool_set_active (priv->pool, TRUE))
goto activate_failed;
}
ret = gst_buffer_pool_acquire_buffer (priv->pool, &to_render, NULL);
if (ret != GST_FLOW_OK)
goto no_buffer;
wlbuffer = gst_buffer_get_wl_buffer (priv->display, to_render);
/* attach a wl_buffer if there isn't one yet */
if (G_UNLIKELY (!wlbuffer)) {
mem = gst_buffer_peek_memory (to_render, 0);
wbuf = gst_wl_shm_memory_construct_wl_buffer (mem, priv->display,
&priv->video_info);
if (G_UNLIKELY (!wbuf))
goto no_wl_buffer_shm;
wlbuffer = gst_buffer_add_wl_buffer (to_render, wbuf, priv->display);
}
if (!gst_video_frame_map (&dst, &priv->video_info, to_render,
GST_MAP_WRITE))
goto dst_map_failed;
if (!gst_video_frame_map (&src, &src_info, buffer, GST_MAP_READ)) {
gst_video_frame_unmap (&dst);
goto src_map_failed;
}
gst_video_frame_copy (&dst, &src);
gst_video_frame_unmap (&src);
gst_video_frame_unmap (&dst);
goto render;
}
}
if (!wbuf)
goto no_wl_buffer;
wlbuffer = gst_buffer_add_wl_buffer (buffer, wbuf, priv->display);
to_render = buffer;
render:
/* drop double rendering */
if (G_UNLIKELY (wlbuffer ==
gst_buffer_get_wl_buffer (priv->display, priv->last_buffer))) {
GST_LOG_OBJECT (self, "Buffer already being rendered");
goto done;
}
gst_buffer_replace (&priv->last_buffer, to_render);
render_last_buffer (self, FALSE);
if (buffer != to_render)
gst_buffer_unref (to_render);
goto done;
no_window_size:
{
GST_ELEMENT_ERROR (self, RESOURCE, WRITE,
("Window has no size set"),
("Make sure you set the size after calling set_window_handle"));
ret = GST_FLOW_ERROR;
goto done;
}
no_buffer:
{
GST_WARNING_OBJECT (self, "could not create buffer");
goto done;
}
no_wl_buffer_shm:
{
GST_ERROR_OBJECT (self, "could not create wl_buffer out of wl_shm memory");
ret = GST_FLOW_ERROR;
goto done;
}
no_wl_buffer:
{
GST_ERROR_OBJECT (self,
"buffer %" GST_PTR_FORMAT " cannot have a wl_buffer", buffer);
ret = GST_FLOW_ERROR;
goto done;
}
activate_failed:
{
GST_ERROR_OBJECT (self, "failed to activate bufferpool.");
ret = GST_FLOW_ERROR;
goto done;
}
src_map_failed:
{
GST_ELEMENT_ERROR (self, RESOURCE, READ,
("Video memory can not be read from userspace."), (NULL));
ret = GST_FLOW_ERROR;
goto done;
}
dst_map_failed:
{
GST_ELEMENT_ERROR (self, RESOURCE, WRITE,
("Video memory can not be written from userspace."), (NULL));
ret = GST_FLOW_ERROR;
goto done;
}
done:
{
g_mutex_unlock (&priv->render_lock);
return ret;
}
}
static void
gst_gtk_wayland_sink_set_rotate_method (GstGtkWaylandSink * self,
GstVideoOrientationMethod method, gboolean from_tag)
{
GstGtkWaylandSinkPrivate *priv =
gst_gtk_wayland_sink_get_instance_private (self);
GstVideoOrientationMethod new_method;
if (method == GST_VIDEO_ORIENTATION_CUSTOM) {
GST_WARNING_OBJECT (self, "unsupported custom orientation");
return;
}
GST_OBJECT_LOCK (self);
if (from_tag)
priv->tag_rotate_method = method;
else
priv->sink_rotate_method = method;
if (priv->sink_rotate_method == GST_VIDEO_ORIENTATION_AUTO)
new_method = priv->tag_rotate_method;
else
new_method = priv->sink_rotate_method;
if (new_method != priv->current_rotate_method) {
GST_DEBUG_OBJECT (priv, "Changing method from %d to %d",
priv->current_rotate_method, new_method);
if (priv->wl_window) {
g_mutex_lock (&priv->render_lock);
gst_wl_window_set_rotate_method (priv->wl_window, new_method);
g_mutex_unlock (&priv->render_lock);
}
priv->current_rotate_method = new_method;
}
GST_OBJECT_UNLOCK (self);
}