| /* |
| * GStreamer |
| * Copyright (C) 2015 Matthew Waters <matthew@centricular.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. |
| */ |
| |
| /** |
| * SECTION:gtkgstsink |
| * @title: GstGtkBaseSink |
| * |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include "gstgtkbasesink.h" |
| #include "gstgtkutils.h" |
| |
| GST_DEBUG_CATEGORY (gst_debug_gtk_base_sink); |
| #define GST_CAT_DEFAULT gst_debug_gtk_base_sink |
| |
| #define DEFAULT_FORCE_ASPECT_RATIO TRUE |
| #define DEFAULT_PAR_N 0 |
| #define DEFAULT_PAR_D 1 |
| #define DEFAULT_IGNORE_ALPHA TRUE |
| |
| static void gst_gtk_base_sink_finalize (GObject * object); |
| static void gst_gtk_base_sink_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * param_spec); |
| static void gst_gtk_base_sink_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * param_spec); |
| |
| static gboolean gst_gtk_base_sink_start (GstBaseSink * bsink); |
| static gboolean gst_gtk_base_sink_stop (GstBaseSink * bsink); |
| |
| static GstStateChangeReturn |
| gst_gtk_base_sink_change_state (GstElement * element, |
| GstStateChange transition); |
| |
| static void gst_gtk_base_sink_get_times (GstBaseSink * bsink, GstBuffer * buf, |
| GstClockTime * start, GstClockTime * end); |
| static gboolean gst_gtk_base_sink_set_caps (GstBaseSink * bsink, |
| GstCaps * caps); |
| static GstFlowReturn gst_gtk_base_sink_show_frame (GstVideoSink * bsink, |
| GstBuffer * buf); |
| |
| static void |
| gst_gtk_base_sink_navigation_interface_init (GstNavigationInterface * iface); |
| |
| enum |
| { |
| PROP_0, |
| PROP_WIDGET, |
| PROP_FORCE_ASPECT_RATIO, |
| PROP_PIXEL_ASPECT_RATIO, |
| PROP_IGNORE_ALPHA, |
| }; |
| |
| #define gst_gtk_base_sink_parent_class parent_class |
| G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GstGtkBaseSink, gst_gtk_base_sink, |
| GST_TYPE_VIDEO_SINK, |
| G_IMPLEMENT_INTERFACE (GST_TYPE_NAVIGATION, |
| gst_gtk_base_sink_navigation_interface_init); |
| GST_DEBUG_CATEGORY_INIT (gst_debug_gtk_base_sink, |
| "gtkbasesink", 0, "Gtk Video Sink base class")); |
| |
| |
| static void |
| gst_gtk_base_sink_class_init (GstGtkBaseSinkClass * klass) |
| { |
| GObjectClass *gobject_class; |
| GstElementClass *gstelement_class; |
| GstBaseSinkClass *gstbasesink_class; |
| GstVideoSinkClass *gstvideosink_class; |
| |
| gobject_class = (GObjectClass *) klass; |
| gstelement_class = (GstElementClass *) klass; |
| gstbasesink_class = (GstBaseSinkClass *) klass; |
| gstvideosink_class = (GstVideoSinkClass *) klass; |
| |
| gobject_class->set_property = gst_gtk_base_sink_set_property; |
| gobject_class->get_property = gst_gtk_base_sink_get_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)); |
| |
| g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO, |
| g_param_spec_boolean ("force-aspect-ratio", |
| "Force aspect ratio", |
| "When enabled, scaling will respect original aspect ratio", |
| DEFAULT_FORCE_ASPECT_RATIO, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, PROP_PIXEL_ASPECT_RATIO, |
| gst_param_spec_fraction ("pixel-aspect-ratio", "Pixel Aspect Ratio", |
| "The pixel aspect ratio of the device", DEFAULT_PAR_N, DEFAULT_PAR_D, |
| G_MAXINT, 1, 1, 1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, PROP_IGNORE_ALPHA, |
| g_param_spec_boolean ("ignore-alpha", "Ignore Alpha", |
| "When enabled, alpha will be ignored and converted to black", |
| DEFAULT_IGNORE_ALPHA, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| gobject_class->finalize = gst_gtk_base_sink_finalize; |
| |
| gstelement_class->change_state = gst_gtk_base_sink_change_state; |
| gstbasesink_class->set_caps = gst_gtk_base_sink_set_caps; |
| gstbasesink_class->get_times = gst_gtk_base_sink_get_times; |
| gstbasesink_class->start = gst_gtk_base_sink_start; |
| gstbasesink_class->stop = gst_gtk_base_sink_stop; |
| |
| gstvideosink_class->show_frame = gst_gtk_base_sink_show_frame; |
| } |
| |
| static void |
| gst_gtk_base_sink_init (GstGtkBaseSink * gtk_sink) |
| { |
| gtk_sink->force_aspect_ratio = DEFAULT_FORCE_ASPECT_RATIO; |
| gtk_sink->par_n = DEFAULT_PAR_N; |
| gtk_sink->par_d = DEFAULT_PAR_D; |
| gtk_sink->ignore_alpha = DEFAULT_IGNORE_ALPHA; |
| } |
| |
| static void |
| gst_gtk_base_sink_finalize (GObject * object) |
| { |
| GstGtkBaseSink *gtk_sink = GST_GTK_BASE_SINK (object); |
| |
| GST_OBJECT_LOCK (gtk_sink); |
| if (gtk_sink->window && gtk_sink->window_destroy_id) |
| g_signal_handler_disconnect (gtk_sink->window, gtk_sink->window_destroy_id); |
| if (gtk_sink->widget && gtk_sink->widget_destroy_id) |
| g_signal_handler_disconnect (gtk_sink->widget, gtk_sink->widget_destroy_id); |
| |
| g_clear_object (>k_sink->widget); |
| GST_OBJECT_UNLOCK (gtk_sink); |
| |
| G_OBJECT_CLASS (parent_class)->finalize (object); |
| } |
| |
| static void |
| widget_destroy_cb (GtkWidget * widget, GstGtkBaseSink * gtk_sink) |
| { |
| GST_OBJECT_LOCK (gtk_sink); |
| g_clear_object (>k_sink->widget); |
| GST_OBJECT_UNLOCK (gtk_sink); |
| } |
| |
| static void |
| window_destroy_cb (GtkWidget * widget, GstGtkBaseSink * gtk_sink) |
| { |
| GST_OBJECT_LOCK (gtk_sink); |
| gtk_sink->window = NULL; |
| GST_OBJECT_UNLOCK (gtk_sink); |
| } |
| |
| static GtkGstBaseWidget * |
| gst_gtk_base_sink_get_widget (GstGtkBaseSink * gtk_sink) |
| { |
| if (gtk_sink->widget != NULL) |
| return gtk_sink->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_ERROR_OBJECT (gtk_sink, "Could not ensure GTK initialization."); |
| return NULL; |
| } |
| |
| g_assert (GST_GTK_BASE_SINK_GET_CLASS (gtk_sink)->create_widget); |
| gtk_sink->widget = (GtkGstBaseWidget *) |
| GST_GTK_BASE_SINK_GET_CLASS (gtk_sink)->create_widget (); |
| |
| gtk_sink->bind_aspect_ratio = |
| g_object_bind_property (gtk_sink, "force-aspect-ratio", gtk_sink->widget, |
| "force-aspect-ratio", G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE); |
| gtk_sink->bind_pixel_aspect_ratio = |
| g_object_bind_property (gtk_sink, "pixel-aspect-ratio", gtk_sink->widget, |
| "pixel-aspect-ratio", G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE); |
| gtk_sink->bind_ignore_alpha = |
| g_object_bind_property (gtk_sink, "ignore-alpha", gtk_sink->widget, |
| "ignore-alpha", G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE); |
| |
| /* Take the floating ref, other wise the destruction of the container will |
| * make this widget disapear possibly before we are done. */ |
| gst_object_ref_sink (gtk_sink->widget); |
| gtk_sink->widget_destroy_id = g_signal_connect (gtk_sink->widget, "destroy", |
| G_CALLBACK (widget_destroy_cb), gtk_sink); |
| |
| /* back pointer */ |
| gtk_gst_base_widget_set_element (GTK_GST_BASE_WIDGET (gtk_sink->widget), |
| GST_ELEMENT (gtk_sink)); |
| |
| return gtk_sink->widget; |
| } |
| |
| static void |
| gst_gtk_base_sink_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| GstGtkBaseSink *gtk_sink = GST_GTK_BASE_SINK (object); |
| |
| switch (prop_id) { |
| case PROP_WIDGET: |
| { |
| GObject *widget = NULL; |
| |
| GST_OBJECT_LOCK (gtk_sink); |
| if (gtk_sink->widget != NULL) |
| widget = G_OBJECT (gtk_sink->widget); |
| GST_OBJECT_UNLOCK (gtk_sink); |
| |
| if (!widget) |
| widget = |
| gst_gtk_invoke_on_main ((GThreadFunc) gst_gtk_base_sink_get_widget, |
| gtk_sink); |
| |
| g_value_set_object (value, widget); |
| break; |
| } |
| case PROP_FORCE_ASPECT_RATIO: |
| g_value_set_boolean (value, gtk_sink->force_aspect_ratio); |
| break; |
| case PROP_PIXEL_ASPECT_RATIO: |
| gst_value_set_fraction (value, gtk_sink->par_n, gtk_sink->par_d); |
| break; |
| case PROP_IGNORE_ALPHA: |
| g_value_set_boolean (value, gtk_sink->ignore_alpha); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_gtk_base_sink_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstGtkBaseSink *gtk_sink = GST_GTK_BASE_SINK (object); |
| |
| switch (prop_id) { |
| case PROP_FORCE_ASPECT_RATIO: |
| gtk_sink->force_aspect_ratio = g_value_get_boolean (value); |
| break; |
| case PROP_PIXEL_ASPECT_RATIO: |
| gtk_sink->par_n = gst_value_get_fraction_numerator (value); |
| gtk_sink->par_d = gst_value_get_fraction_denominator (value); |
| break; |
| case PROP_IGNORE_ALPHA: |
| gtk_sink->ignore_alpha = g_value_get_boolean (value); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_gtk_base_sink_navigation_send_event (GstNavigation * navigation, |
| GstStructure * structure) |
| { |
| GstGtkBaseSink *sink = GST_GTK_BASE_SINK (navigation); |
| GstEvent *event; |
| GstPad *pad; |
| |
| event = gst_event_new_navigation (structure); |
| pad = gst_pad_get_peer (GST_VIDEO_SINK_PAD (sink)); |
| |
| GST_TRACE_OBJECT (sink, "navigation event %" GST_PTR_FORMAT, structure); |
| |
| 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 (sink), |
| gst_navigation_message_new_event (GST_OBJECT_CAST (sink), event)); |
| } |
| gst_event_unref (event); |
| gst_object_unref (pad); |
| } |
| } |
| |
| static void |
| gst_gtk_base_sink_navigation_interface_init (GstNavigationInterface * iface) |
| { |
| iface->send_event = gst_gtk_base_sink_navigation_send_event; |
| } |
| |
| static gboolean |
| gst_gtk_base_sink_start_on_main (GstBaseSink * bsink) |
| { |
| GstGtkBaseSink *gst_sink = GST_GTK_BASE_SINK (bsink); |
| GstGtkBaseSinkClass *klass = GST_GTK_BASE_SINK_GET_CLASS (bsink); |
| GtkWidget *toplevel; |
| |
| if (gst_gtk_base_sink_get_widget (gst_sink) == NULL) |
| return FALSE; |
| |
| /* After this point, gtk_sink->widget will always be set */ |
| |
| toplevel = gtk_widget_get_toplevel (GTK_WIDGET (gst_sink->widget)); |
| if (!gtk_widget_is_toplevel (toplevel)) { |
| /* sanity check */ |
| g_assert (klass->window_title); |
| |
| /* User did not add widget its own UI, let's popup a new GtkWindow to |
| * make gst-launch-1.0 work. */ |
| gst_sink->window = gtk_window_new (GTK_WINDOW_TOPLEVEL); |
| gtk_window_set_default_size (GTK_WINDOW (gst_sink->window), 640, 480); |
| gtk_window_set_title (GTK_WINDOW (gst_sink->window), klass->window_title); |
| gtk_container_add (GTK_CONTAINER (gst_sink->window), toplevel); |
| gst_sink->window_destroy_id = g_signal_connect (gst_sink->window, "destroy", |
| G_CALLBACK (window_destroy_cb), gst_sink); |
| } |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| gst_gtk_base_sink_start (GstBaseSink * bsink) |
| { |
| return ! !gst_gtk_invoke_on_main ((GThreadFunc) |
| gst_gtk_base_sink_start_on_main, bsink); |
| } |
| |
| static gboolean |
| gst_gtk_base_sink_stop_on_main (GstBaseSink * bsink) |
| { |
| GstGtkBaseSink *gst_sink = GST_GTK_BASE_SINK (bsink); |
| |
| if (gst_sink->window) { |
| gtk_widget_destroy (gst_sink->window); |
| gst_sink->window = NULL; |
| gst_sink->widget = NULL; |
| } |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| gst_gtk_base_sink_stop (GstBaseSink * bsink) |
| { |
| GstGtkBaseSink *gst_sink = GST_GTK_BASE_SINK (bsink); |
| |
| if (gst_sink->window) |
| return ! !gst_gtk_invoke_on_main ((GThreadFunc) |
| gst_gtk_base_sink_stop_on_main, bsink); |
| |
| 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_base_sink_change_state (GstElement * element, GstStateChange transition) |
| { |
| GstGtkBaseSink *gtk_sink = GST_GTK_BASE_SINK (element); |
| GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; |
| |
| GST_DEBUG_OBJECT (element, "changing state: %s => %s", |
| gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)), |
| gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition))); |
| |
| ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); |
| if (ret == GST_STATE_CHANGE_FAILURE) |
| return ret; |
| |
| switch (transition) { |
| case GST_STATE_CHANGE_READY_TO_PAUSED: |
| { |
| GtkWindow *window = NULL; |
| |
| GST_OBJECT_LOCK (gtk_sink); |
| if (gtk_sink->window) |
| window = g_object_ref (gtk_sink->window); |
| GST_OBJECT_UNLOCK (gtk_sink); |
| |
| if (window) |
| gst_gtk_invoke_on_main ((GThreadFunc) gst_gtk_widget_show_all_and_unref, |
| window); |
| |
| break; |
| } |
| case GST_STATE_CHANGE_PAUSED_TO_READY: |
| GST_OBJECT_LOCK (gtk_sink); |
| if (gtk_sink->widget) |
| gtk_gst_base_widget_set_buffer (gtk_sink->widget, NULL); |
| GST_OBJECT_UNLOCK (gtk_sink); |
| break; |
| default: |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static void |
| gst_gtk_base_sink_get_times (GstBaseSink * bsink, GstBuffer * buf, |
| GstClockTime * start, GstClockTime * end) |
| { |
| GstGtkBaseSink *gtk_sink; |
| |
| gtk_sink = GST_GTK_BASE_SINK (bsink); |
| |
| if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) { |
| *start = GST_BUFFER_TIMESTAMP (buf); |
| if (GST_BUFFER_DURATION_IS_VALID (buf)) |
| *end = *start + GST_BUFFER_DURATION (buf); |
| else { |
| if (GST_VIDEO_INFO_FPS_N (>k_sink->v_info) > 0) { |
| *end = *start + |
| gst_util_uint64_scale_int (GST_SECOND, |
| GST_VIDEO_INFO_FPS_D (>k_sink->v_info), |
| GST_VIDEO_INFO_FPS_N (>k_sink->v_info)); |
| } |
| } |
| } |
| } |
| |
| gboolean |
| gst_gtk_base_sink_set_caps (GstBaseSink * bsink, GstCaps * caps) |
| { |
| GstGtkBaseSink *gtk_sink = GST_GTK_BASE_SINK (bsink); |
| |
| GST_DEBUG ("set caps with %" GST_PTR_FORMAT, caps); |
| |
| if (!gst_video_info_from_caps (>k_sink->v_info, caps)) |
| return FALSE; |
| |
| GST_OBJECT_LOCK (gtk_sink); |
| |
| if (gtk_sink->widget == NULL) { |
| GST_OBJECT_UNLOCK (gtk_sink); |
| GST_ELEMENT_ERROR (gtk_sink, RESOURCE, NOT_FOUND, |
| ("%s", "Output widget was destroyed"), (NULL)); |
| return FALSE; |
| } |
| |
| if (!gtk_gst_base_widget_set_format (gtk_sink->widget, >k_sink->v_info)) { |
| GST_OBJECT_UNLOCK (gtk_sink); |
| return FALSE; |
| } |
| GST_OBJECT_UNLOCK (gtk_sink); |
| |
| return TRUE; |
| } |
| |
| static GstFlowReturn |
| gst_gtk_base_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf) |
| { |
| GstGtkBaseSink *gtk_sink; |
| |
| GST_TRACE ("rendering buffer:%p", buf); |
| |
| gtk_sink = GST_GTK_BASE_SINK (vsink); |
| |
| GST_OBJECT_LOCK (vsink); |
| |
| if (gtk_sink->widget == NULL) { |
| GST_OBJECT_UNLOCK (gtk_sink); |
| GST_ELEMENT_ERROR (gtk_sink, RESOURCE, NOT_FOUND, |
| ("%s", "Output widget was destroyed"), (NULL)); |
| return GST_FLOW_ERROR; |
| } |
| |
| gtk_gst_base_widget_set_buffer (gtk_sink->widget, buf); |
| |
| GST_OBJECT_UNLOCK (gtk_sink); |
| |
| return GST_FLOW_OK; |
| } |