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vulkan/sink: implement GstNavigation support

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This commit is contained in:
Matthew Waters 2020-02-17 15:08:47 +11:00 committed by GStreamer Merge Bot
parent 52a9135a2b
commit d66743e482
2 changed files with 130 additions and 1 deletions
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128
ext/vulkan/vksink.c
View file

@ -67,6 +67,14 @@ static GstFlowReturn gst_vulkan_sink_show_frame (GstVideoSink * bsink,
static void gst_vulkan_sink_video_overlay_init (GstVideoOverlayInterface *
iface);
static void gst_vulkan_sink_navigation_interface_init (GstNavigationInterface *
iface);
static void gst_vulkan_sink_key_event_cb (GstVulkanWindow * window,
char *event_name, char *key_string, GstVulkanSink * vk_sink);
static void gst_vulkan_sink_mouse_event_cb (GstVulkanWindow * window,
char *event_name, int button, double posx, double posy,
GstVulkanSink * vk_sink);
static GstStaticPadTemplate gst_vulkan_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
@ -97,7 +105,9 @@ G_DEFINE_TYPE_WITH_CODE (GstVulkanSink, gst_vulkan_sink,
GST_TYPE_VIDEO_SINK, GST_DEBUG_CATEGORY_INIT (gst_debug_vulkan_sink,
"vulkansink", 0, "Vulkan Video Sink");
G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_OVERLAY,
gst_vulkan_sink_video_overlay_init));
gst_vulkan_sink_video_overlay_init);
G_IMPLEMENT_INTERFACE (GST_TYPE_NAVIGATION,
gst_vulkan_sink_navigation_interface_init));
static void
gst_vulkan_sink_class_init (GstVulkanSinkClass * klass)
@ -337,6 +347,14 @@ gst_vulkan_sink_change_state (GstElement * element, GstStateChange transition)
return GST_STATE_CHANGE_FAILURE;
}
}
vk_sink->key_sig_id =
g_signal_connect (vk_sink->window, "key-event",
G_CALLBACK (gst_vulkan_sink_key_event_cb), vk_sink);
vk_sink->mouse_sig_id =
g_signal_connect (vk_sink->window, "mouse-event",
G_CALLBACK (gst_vulkan_sink_mouse_event_cb), vk_sink);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
@ -357,6 +375,14 @@ gst_vulkan_sink_change_state (GstElement * element, GstStateChange transition)
vk_sink->swapper = NULL;
if (vk_sink->window) {
gst_vulkan_window_close (vk_sink->window);
if (vk_sink->key_sig_id)
g_signal_handler_disconnect (vk_sink->window, vk_sink->key_sig_id);
vk_sink->key_sig_id = 0;
if (vk_sink->mouse_sig_id)
g_signal_handler_disconnect (vk_sink->window, vk_sink->mouse_sig_id);
vk_sink->mouse_sig_id = 0;
gst_object_unref (vk_sink->window);
}
vk_sink->window = NULL;
@ -569,3 +595,103 @@ gst_vulkan_sink_video_overlay_init (GstVideoOverlayInterface * iface)
{
iface->set_window_handle = gst_vulkan_sink_set_window_handle;
}
static void
_display_size_to_stream_size (GstVulkanSink * vk_sink,
GstVideoRectangle * display_rect, gdouble x, gdouble y, gdouble * stream_x,
gdouble * stream_y)
{
gdouble stream_width, stream_height;
stream_width = (gdouble) GST_VIDEO_INFO_WIDTH (&vk_sink->v_info);
stream_height = (gdouble) GST_VIDEO_INFO_HEIGHT (&vk_sink->v_info);
/* from display coordinates to stream coordinates */
if (display_rect->w > 0)
*stream_x = (x - display_rect->x) / display_rect->w * stream_width;
else
*stream_x = 0.;
/* clip to stream size */
*stream_x = CLAMP (*stream_x, 0., stream_width);
/* same for y-axis */
if (display_rect->h > 0)
*stream_y = (y - display_rect->y) / display_rect->h * stream_height;
else
*stream_y = 0.;
*stream_y = CLAMP (*stream_y, 0., stream_height);
GST_TRACE_OBJECT (vk_sink, "transform %fx%f into %fx%f", x, y, *stream_x,
*stream_y);
}
static void
gst_vulkan_sink_navigation_send_event (GstNavigation * navigation,
GstStructure * structure)
{
GstVulkanSink *vk_sink = GST_VULKAN_SINK (navigation);
GstVideoRectangle display_rect;
GstEvent *event = NULL;
gdouble x, y;
if (!vk_sink->swapper || !vk_sink->swapper->window) {
gst_structure_free (structure);
return;
}
gst_vulkan_swapper_get_surface_rectangles (vk_sink->swapper, NULL, NULL,
&display_rect);
/* Converting pointer coordinates to the non scaled geometry */
if (display_rect.w != 0 && display_rect.h != 0
&& gst_structure_get_double (structure, "pointer_x", &x)
&& gst_structure_get_double (structure, "pointer_y", &y)) {
gdouble stream_x, stream_y;
_display_size_to_stream_size (vk_sink, &display_rect, x, y, &stream_x,
&stream_y);
gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE,
stream_x, "pointer_y", G_TYPE_DOUBLE, stream_y, NULL);
}
event = gst_event_new_navigation (structure);
if (event) {
gboolean handled;
gst_event_ref (event);
handled = gst_pad_push_event (GST_VIDEO_SINK_PAD (vk_sink), event);
if (!handled)
gst_element_post_message ((GstElement *) vk_sink,
gst_navigation_message_new_event ((GstObject *) vk_sink, event));
gst_event_unref (event);
}
}
static void
gst_vulkan_sink_navigation_interface_init (GstNavigationInterface * iface)
{
iface->send_event = gst_vulkan_sink_navigation_send_event;
}
static void
gst_vulkan_sink_key_event_cb (GstVulkanWindow * window, char *event_name, char
*key_string, GstVulkanSink * vk_sink)
{
GST_DEBUG_OBJECT (vk_sink, "event %s key %s pressed", event_name, key_string);
gst_navigation_send_key_event (GST_NAVIGATION (vk_sink),
event_name, key_string);
}
static void
gst_vulkan_sink_mouse_event_cb (GstVulkanWindow * window, char *event_name,
int button, double posx, double posy, GstVulkanSink * vk_sink)
{
GST_DEBUG_OBJECT (vk_sink, "event %s at %g, %g", event_name, posx, posy);
gst_navigation_send_mouse_event (GST_NAVIGATION (vk_sink),
event_name, button, posx, posy);
}

3
ext/vulkan/vksink.h
View file

@ -59,6 +59,9 @@ struct _GstVulkanSink
/* the currently set window handle */
guintptr set_window_handle;
gulong key_sig_id;
gulong mouse_sig_id;
};
struct _GstVulkanSinkClass