gstreamer/gst-libs/gst/gl/wayland/gstglwindow_wayland_egl.c
Matthew Waters 70184c52f0 wayland: fail window open if the display is the correct type
Errors out cleanly if a wayland compositor is not running
2017-12-09 19:32:07 +00:00

571 lines
17 KiB
C

/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.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.
*/
#define GLIB_DISABLE_DEPRECATION_WARNINGS
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <linux/input.h>
#include "wayland_event_source.h"
#include "../gstgl_fwd.h"
#include <gst/gl/gstglcontext.h>
#include "gstgldisplay_wayland.h"
#include "gstglwindow_wayland_egl.h"
const gchar *WlEGLErrorString ();
#define GST_CAT_DEFAULT gst_gl_window_debug
#define gst_gl_window_wayland_egl_parent_class parent_class
G_DEFINE_TYPE (GstGLWindowWaylandEGL, gst_gl_window_wayland_egl,
GST_GL_TYPE_WINDOW);
static guintptr gst_gl_window_wayland_egl_get_window_handle (GstGLWindow *
window);
static void gst_gl_window_wayland_egl_set_window_handle (GstGLWindow * window,
guintptr handle);
static void gst_gl_window_wayland_egl_show (GstGLWindow * window);
static void gst_gl_window_wayland_egl_draw (GstGLWindow * window);
static void gst_gl_window_wayland_egl_close (GstGLWindow * window);
static gboolean gst_gl_window_wayland_egl_open (GstGLWindow * window,
GError ** error);
static guintptr gst_gl_window_wayland_egl_get_display (GstGLWindow * window);
static gboolean gst_gl_window_wayland_egl_set_render_rectangle (GstGLWindow *
window, gint x, gint y, gint width, gint height);
#if 0
static void
pointer_handle_enter (void *data, struct wl_pointer *pointer, uint32_t serial,
struct wl_surface *surface, wl_fixed_t sx_w, wl_fixed_t sy_w)
{
GstGLWindowWaylandEGL *window_egl = data;
struct wl_buffer *buffer;
struct wl_cursor_image *image = NULL;
window_egl->display.serial = serial;
if (window_egl->display.default_cursor) {
image = window_egl->display.default_cursor->images[0];
buffer = wl_cursor_image_get_buffer (image);
wl_pointer_set_cursor (pointer, serial,
window_egl->display.cursor_surface, image->hotspot_x, image->hotspot_y);
wl_surface_attach (window_egl->display.cursor_surface, buffer, 0, 0);
wl_surface_damage (window_egl->display.cursor_surface, 0, 0,
image->width, image->height);
wl_surface_commit (window_egl->display.cursor_surface);
}
}
static void
pointer_handle_leave (void *data, struct wl_pointer *pointer, uint32_t serial,
struct wl_surface *surface)
{
GstGLWindowWaylandEGL *window_egl = data;
window_egl->display.serial = serial;
}
static void
pointer_handle_motion (void *data, struct wl_pointer *pointer, uint32_t time,
wl_fixed_t sx_w, wl_fixed_t sy_w)
{
GstGLWindowWaylandEGL *window_egl = data;
window_egl->display.pointer_x = wl_fixed_to_double (sx_w);
window_egl->display.pointer_y = wl_fixed_to_double (sy_w);
}
enum wl_edges
{
WL_EDGE_NONE = 0,
WL_EDGE_TOP = 1,
WL_EDGE_BOTTOM = 2,
WL_EDGE_LEFT = 4,
WL_EDGE_RIGHT = 8,
};
static guint
_get_closest_pointer_corner (GstGLWindowWaylandEGL * window_egl)
{
guint edges = 0;
gdouble win_width, win_height;
gdouble p_x, p_y;
win_width = (gdouble) window_egl->window.window_width;
win_height = (gdouble) window_egl->window.window_height;
p_x = window_egl->display.pointer_x;
p_y = window_egl->display.pointer_y;
if (win_width == 0.0 || win_height == 0.0)
return WL_EDGE_NONE;
edges |= win_width / 2.0 - p_x < 0.0 ? WL_EDGE_RIGHT : WL_EDGE_LEFT;
edges |= win_height / 2.0 - p_y < 0.0 ? WL_EDGE_BOTTOM : WL_EDGE_TOP;
return edges;
}
static void
pointer_handle_button (void *data, struct wl_pointer *pointer, uint32_t serial,
uint32_t time, uint32_t button, uint32_t state_w)
{
GstGLWindowWaylandEGL *window_egl = data;
guint edges = _get_closest_pointer_corner (window_egl);
window_egl->display.serial = serial;
if (button == BTN_LEFT && state_w == WL_POINTER_BUTTON_STATE_PRESSED)
wl_shell_surface_move (window_egl->window.shell_surface,
window_egl->display.seat, serial);
if (button == BTN_RIGHT && state_w == WL_POINTER_BUTTON_STATE_PRESSED)
wl_shell_surface_resize (window_egl->window.shell_surface,
window_egl->display.seat, serial, edges);
}
static void
pointer_handle_axis (void *data, struct wl_pointer *pointer, uint32_t time,
uint32_t axis, wl_fixed_t value)
{
}
static const struct wl_pointer_listener pointer_listener = {
pointer_handle_enter,
pointer_handle_leave,
pointer_handle_motion,
pointer_handle_button,
pointer_handle_axis,
};
static void
seat_handle_capabilities (void *data, struct wl_seat *seat,
enum wl_seat_capability caps)
{
GstGLWindowWaylandEGL *window_egl = data;
struct display *display = &window_egl->display;
if ((caps & WL_SEAT_CAPABILITY_POINTER) && !display->pointer) {
display->pointer = wl_seat_get_pointer (seat);
wl_pointer_set_user_data (display->pointer, window_egl);
wl_pointer_add_listener (display->pointer, &pointer_listener, window_egl);
} else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && display->pointer) {
wl_pointer_destroy (display->pointer);
display->pointer = NULL;
}
#if 0
if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
input->keyboard = wl_seat_get_keyboard (seat);
wl_keyboard_set_user_data (input->keyboard, input);
wl_keyboard_add_listener (input->keyboard, &keyboard_listener, input);
} else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
wl_keyboard_destroy (input->keyboard);
input->keyboard = NULL;
}
#endif
}
static const struct wl_seat_listener seat_listener = {
seat_handle_capabilities,
};
#endif
static void
handle_ping (void *data, struct wl_shell_surface *shell_surface,
uint32_t serial)
{
GstGLWindowWaylandEGL *window_egl = data;
GST_TRACE_OBJECT (window_egl, "ping received serial %u", serial);
wl_shell_surface_pong (shell_surface, serial);
}
static void window_resize (GstGLWindowWaylandEGL * window_egl, guint width,
guint height);
static void
handle_configure (void *data, struct wl_shell_surface *shell_surface,
uint32_t edges, int32_t width, int32_t height)
{
GstGLWindowWaylandEGL *window_egl = data;
GST_DEBUG ("configure event on surface %p, %ix%i", shell_surface, width,
height);
window_resize (window_egl, width, height);
}
static void
handle_popup_done (void *data, struct wl_shell_surface *shell_surface)
{
}
static const struct wl_shell_surface_listener shell_surface_listener = {
handle_ping,
handle_configure,
handle_popup_done
};
static void
destroy_surfaces (GstGLWindowWaylandEGL * window_egl)
{
if (window_egl->window.subsurface) {
wl_subsurface_destroy (window_egl->window.subsurface);
window_egl->window.subsurface = NULL;
}
if (window_egl->window.shell_surface) {
wl_shell_surface_destroy (window_egl->window.shell_surface);
window_egl->window.shell_surface = NULL;
}
if (window_egl->window.surface) {
wl_surface_destroy (window_egl->window.surface);
window_egl->window.surface = NULL;
}
if (window_egl->window.native) {
wl_egl_window_destroy (window_egl->window.native);
window_egl->window.native = NULL;
}
}
static void
create_surfaces (GstGLWindowWaylandEGL * window_egl)
{
GstGLDisplayWayland *display =
GST_GL_DISPLAY_WAYLAND (GST_GL_WINDOW (window_egl)->display);
gint width, height;
if (!window_egl->window.surface) {
window_egl->window.surface =
wl_compositor_create_surface (display->compositor);
if (window_egl->window.queue)
wl_proxy_set_queue ((struct wl_proxy *) window_egl->window.surface,
window_egl->window.queue);
}
if (window_egl->window.foreign_surface) {
/* (re)parent */
if (!display->subcompositor) {
GST_ERROR_OBJECT (window_egl,
"Wayland server does not support subsurfaces");
window_egl->window.foreign_surface = NULL;
goto shell_window;
}
if (!window_egl->window.subsurface) {
window_egl->window.subsurface =
wl_subcompositor_get_subsurface (display->subcompositor,
window_egl->window.surface, window_egl->window.foreign_surface);
if (window_egl->window.queue)
wl_proxy_set_queue ((struct wl_proxy *) window_egl->window.subsurface,
window_egl->window.queue);
wl_subsurface_set_position (window_egl->window.subsurface,
window_egl->window.window_x, window_egl->window.window_y);
wl_subsurface_set_desync (window_egl->window.subsurface);
}
} else {
shell_window:
if (!window_egl->window.shell_surface) {
window_egl->window.shell_surface =
wl_shell_get_shell_surface (display->shell,
window_egl->window.surface);
if (window_egl->window.queue)
wl_proxy_set_queue ((struct wl_proxy *) window_egl->window.
shell_surface, window_egl->window.queue);
wl_shell_surface_add_listener (window_egl->window.shell_surface,
&shell_surface_listener, window_egl);
wl_shell_surface_set_title (window_egl->window.shell_surface,
"OpenGL Renderer");
wl_shell_surface_set_toplevel (window_egl->window.shell_surface);
}
}
if (window_egl->window.window_width > 0)
width = window_egl->window.window_width;
else
width = 320;
window_egl->window.window_width = width;
if (window_egl->window.window_height > 0)
height = window_egl->window.window_height;
else
height = 240;
window_egl->window.window_height = height;
if (!window_egl->window.native) {
window_egl->window.native =
wl_egl_window_create (window_egl->window.surface, width, height);
if (window_egl->window.queue)
wl_proxy_set_queue ((struct wl_proxy *) window_egl->window.native,
window_egl->window.queue);
}
}
static void
gst_gl_window_wayland_egl_class_init (GstGLWindowWaylandEGLClass * klass)
{
GstGLWindowClass *window_class = (GstGLWindowClass *) klass;
window_class->get_window_handle =
GST_DEBUG_FUNCPTR (gst_gl_window_wayland_egl_get_window_handle);
window_class->set_window_handle =
GST_DEBUG_FUNCPTR (gst_gl_window_wayland_egl_set_window_handle);
window_class->draw_unlocked =
GST_DEBUG_FUNCPTR (gst_gl_window_wayland_egl_draw);
window_class->show = GST_DEBUG_FUNCPTR (gst_gl_window_wayland_egl_show);
window_class->draw = GST_DEBUG_FUNCPTR (gst_gl_window_wayland_egl_draw);
window_class->close = GST_DEBUG_FUNCPTR (gst_gl_window_wayland_egl_close);
window_class->open = GST_DEBUG_FUNCPTR (gst_gl_window_wayland_egl_open);
window_class->get_display =
GST_DEBUG_FUNCPTR (gst_gl_window_wayland_egl_get_display);
window_class->set_render_rectangle =
GST_DEBUG_FUNCPTR (gst_gl_window_wayland_egl_set_render_rectangle);
}
static void
gst_gl_window_wayland_egl_init (GstGLWindowWaylandEGL * window)
{
}
/* Must be called in the gl thread */
GstGLWindowWaylandEGL *
gst_gl_window_wayland_egl_new (GstGLDisplay * display)
{
if ((gst_gl_display_get_handle_type (display) & GST_GL_DISPLAY_TYPE_WAYLAND)
== 0)
/* we require a wayland display to create wayland surfaces */
return NULL;
GST_DEBUG ("creating Wayland EGL window");
return g_object_new (GST_GL_TYPE_WINDOW_WAYLAND_EGL, NULL);
}
static void
gst_gl_window_wayland_egl_close (GstGLWindow * window)
{
GstGLWindowWaylandEGL *window_egl;
window_egl = GST_GL_WINDOW_WAYLAND_EGL (window);
destroy_surfaces (window_egl);
g_source_destroy (window_egl->wl_source);
g_source_unref (window_egl->wl_source);
window_egl->wl_source = NULL;
GST_GL_WINDOW_CLASS (parent_class)->close (window);
}
static gboolean
gst_gl_window_wayland_egl_open (GstGLWindow * window, GError ** error)
{
GstGLDisplayWayland *display;
GstGLWindowWaylandEGL *window_egl = GST_GL_WINDOW_WAYLAND_EGL (window);
if (!GST_IS_GL_DISPLAY_WAYLAND (window->display)) {
g_set_error (error, GST_GL_WINDOW_ERROR,
GST_GL_WINDOW_ERROR_RESOURCE_UNAVAILABLE,
"Failed to retrieve Wayland display (wrong type?)");
return FALSE;
}
display = GST_GL_DISPLAY_WAYLAND (window->display);
if (!display->display) {
g_set_error (error, GST_GL_WINDOW_ERROR,
GST_GL_WINDOW_ERROR_RESOURCE_UNAVAILABLE,
"Failed to retrieve Wayland display");
return FALSE;
}
window_egl->window.queue = wl_display_create_queue (display->display);
window_egl->wl_source = wayland_event_source_new (display->display,
window_egl->window.queue);
if (!GST_GL_WINDOW_CLASS (parent_class)->open (window, error))
return FALSE;
g_source_attach (window_egl->wl_source, g_main_context_get_thread_default ());
return TRUE;
}
void
gst_gl_window_wayland_egl_create_window (GstGLWindowWaylandEGL * window_egl)
{
create_surfaces (window_egl);
}
static guintptr
gst_gl_window_wayland_egl_get_window_handle (GstGLWindow * window)
{
return (guintptr) GST_GL_WINDOW_WAYLAND_EGL (window)->window.native;
}
static void
gst_gl_window_wayland_egl_set_window_handle (GstGLWindow * window,
guintptr handle)
{
GstGLWindowWaylandEGL *window_egl = GST_GL_WINDOW_WAYLAND_EGL (window);
struct wl_surface *surface = (struct wl_surface *) handle;
/* already set the NULL handle */
if (surface == NULL && window_egl->window.foreign_surface == NULL)
return;
/* unparent */
destroy_surfaces (window_egl);
window_egl->window.foreign_surface = surface;
create_surfaces (window_egl);
}
static void
gst_gl_window_wayland_egl_show (GstGLWindow * window)
{
GstGLDisplayWayland *display_wayland =
GST_GL_DISPLAY_WAYLAND (window->display);
GstGLWindowWaylandEGL *window_egl = GST_GL_WINDOW_WAYLAND_EGL (window);
create_surfaces (window_egl);
if (gst_gl_wl_display_roundtrip_queue (display_wayland->display,
window_egl->window.queue) < 0)
GST_WARNING_OBJECT (window, "failed a roundtrip");
}
static void
window_resize (GstGLWindowWaylandEGL * window_egl, guint width, guint height)
{
GstGLWindow *window = GST_GL_WINDOW (window_egl);
GST_DEBUG ("resizing window from %ux%u to %ux%u",
window_egl->window.window_width, window_egl->window.window_height, width,
height);
if (window_egl->window.native) {
wl_egl_window_resize (window_egl->window.native, width, height, 0, 0);
}
if (window->resize)
window->resize (window->resize_data, width, height);
window_egl->window.window_width = width;
window_egl->window.window_height = height;
}
static void
draw_cb (gpointer data)
{
GstGLWindowWaylandEGL *window_egl = data;
GstGLWindow *window = GST_GL_WINDOW (window_egl);
GstGLContext *context = gst_gl_window_get_context (window);
GstGLContextClass *context_class = GST_GL_CONTEXT_GET_CLASS (context);
create_surfaces (window_egl);
if (window_egl->window.subsurface)
wl_subsurface_set_desync (window_egl->window.subsurface);
if (window->draw)
window->draw (window->draw_data);
context_class->swap_buffers (context);
if (window_egl->window.subsurface)
wl_subsurface_set_desync (window_egl->window.subsurface);
gst_object_unref (context);
}
static void
gst_gl_window_wayland_egl_draw (GstGLWindow * window)
{
gst_gl_window_send_message (window, (GstGLWindowCB) draw_cb, window);
}
struct SetRenderRectangle
{
GstGLWindowWaylandEGL *window_egl;
GstVideoRectangle rect;
};
static void
_free_set_render_rectangle (struct SetRenderRectangle *render)
{
if (render) {
if (render->window_egl)
gst_object_unref (render->window_egl);
g_free (render);
}
}
static void
_set_render_rectangle (gpointer data)
{
struct SetRenderRectangle *render = data;
GST_LOG_OBJECT (render->window_egl, "setting render rectangle %i,%i+%ix%i",
render->rect.x, render->rect.y, render->rect.w, render->rect.h);
if (render->window_egl->window.subsurface) {
wl_subsurface_set_sync (render->window_egl->window.subsurface);
wl_subsurface_set_position (render->window_egl->window.subsurface,
render->rect.x, render->rect.y);
render->window_egl->window.window_x = render->rect.x;
render->window_egl->window.window_y = render->rect.y;
}
window_resize (render->window_egl, render->rect.w, render->rect.h);
}
static gboolean
gst_gl_window_wayland_egl_set_render_rectangle (GstGLWindow * window,
gint x, gint y, gint width, gint height)
{
GstGLWindowWaylandEGL *window_egl = GST_GL_WINDOW_WAYLAND_EGL (window);
struct SetRenderRectangle *render;
render = g_new0 (struct SetRenderRectangle, 1);
render->window_egl = gst_object_ref (window_egl);
render->rect.x = x;
render->rect.y = y;
render->rect.w = width;
render->rect.h = height;
gst_gl_window_send_message_async (window,
(GstGLWindowCB) _set_render_rectangle, render,
(GDestroyNotify) _free_set_render_rectangle);
return TRUE;
}
static guintptr
gst_gl_window_wayland_egl_get_display (GstGLWindow * window)
{
GstGLDisplayWayland *display = GST_GL_DISPLAY_WAYLAND (window->display);
return (guintptr) display->display;
}