gstreamer/gst-libs/gst/vaapi/gstvaapidisplay_wayland.c
Hyunjun Ko 185da3d1a4 libs: display: GstVaapiDisplay as GstObject descendant
This patch is to change the inheritance of GstVaapiDisplay to GstObject,
instead of GstVaapiMiniObject. In this way we can use all the available
infrastructure for GObject/GstObject such as GstTracer, GIR, etc.

In addition, a new debug category for GstVaapiDisplay is created to make it
easier to trace debug messages. It is named "vaapidisplay" and it transverse
all the VA display backends (DRM, GLX, EGL, Wayland, ...)

This patch is a step forward to expose GstVaapiDisplay for users in a future
library.

https://bugzilla.gnome.org/show_bug.cgi?id=768266

Signed-off-by: Víctor Manuel Jáquez Leal <victorx.jaquez@intel.com>
2016-11-03 08:24:59 +01:00

430 lines
12 KiB
C

/*
* gstvaapidisplay_wayland.c - VA/Wayland display abstraction
*
* Copyright (C) 2012-2013 Intel Corporation
* Author: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* SECTION:gstvaapidisplay_wayland
* @short_description: VA/Wayland display abstraction
*/
#include "sysdeps.h"
#include <string.h>
#include "gstvaapidisplay_priv.h"
#include "gstvaapidisplay_wayland.h"
#include "gstvaapidisplay_wayland_priv.h"
#include "gstvaapiwindow_wayland.h"
#define DEBUG_VAAPI_DISPLAY 1
#include "gstvaapidebug.h"
#define _do_init \
G_ADD_PRIVATE (GstVaapiDisplayWayland);
G_DEFINE_TYPE_WITH_CODE (GstVaapiDisplayWayland, gst_vaapi_display_wayland,
GST_TYPE_VAAPI_DISPLAY, _do_init);
static const guint g_display_types = 1U << GST_VAAPI_DISPLAY_TYPE_WAYLAND;
static inline const gchar *
get_default_display_name (void)
{
static const gchar *g_display_name;
if (!g_display_name)
g_display_name = getenv ("WAYLAND_DISPLAY");
return g_display_name;
}
static inline guint
get_display_name_length (const gchar * display_name)
{
const gchar *str;
str = strchr (display_name, '-');
if (str)
return str - display_name;
return strlen (display_name);
}
static gint
compare_display_name (gconstpointer a, gconstpointer b)
{
const GstVaapiDisplayInfo *const info = a;
const gchar *cached_name = info->display_name;
const gchar *tested_name = b;
guint cached_name_length, tested_name_length;
g_return_val_if_fail (cached_name, FALSE);
g_return_val_if_fail (tested_name, FALSE);
cached_name_length = get_display_name_length (cached_name);
tested_name_length = get_display_name_length (tested_name);
/* XXX: handle screen number and default WAYLAND_DISPLAY name */
if (cached_name_length != tested_name_length)
return FALSE;
if (strncmp (cached_name, tested_name, cached_name_length) != 0)
return FALSE;
return TRUE;
}
/* Mangle display name with our prefix */
static gboolean
set_display_name (GstVaapiDisplay * display, const gchar * display_name)
{
GstVaapiDisplayWaylandPrivate *const priv =
GST_VAAPI_DISPLAY_WAYLAND_GET_PRIVATE (display);
g_free (priv->display_name);
if (!display_name) {
display_name = get_default_display_name ();
if (!display_name)
display_name = "";
}
priv->display_name = g_strdup (display_name);
return priv->display_name != NULL;
}
static void
output_handle_geometry (void *data, struct wl_output *output,
int x, int y, int physical_width, int physical_height,
int subpixel, const char *make, const char *model, int transform)
{
GstVaapiDisplayWaylandPrivate *const priv = data;
priv->phys_width = physical_width;
priv->phys_height = physical_height;
}
static void
output_handle_mode (void *data, struct wl_output *wl_output,
uint32_t flags, int width, int height, int refresh)
{
GstVaapiDisplayWaylandPrivate *const priv = data;
if (flags & WL_OUTPUT_MODE_CURRENT) {
priv->width = width;
priv->height = height;
}
}
static const struct wl_output_listener output_listener = {
output_handle_geometry,
output_handle_mode,
};
static void
registry_handle_global (void *data,
struct wl_registry *registry,
uint32_t id, const char *interface, uint32_t version)
{
GstVaapiDisplayWaylandPrivate *const priv = data;
if (strcmp (interface, "wl_compositor") == 0)
priv->compositor =
wl_registry_bind (registry, id, &wl_compositor_interface, 1);
else if (strcmp (interface, "wl_shell") == 0)
priv->shell = wl_registry_bind (registry, id, &wl_shell_interface, 1);
else if (strcmp (interface, "wl_output") == 0) {
priv->output = wl_registry_bind (registry, id, &wl_output_interface, 1);
wl_output_add_listener (priv->output, &output_listener, priv);
}
}
static const struct wl_registry_listener registry_listener = {
registry_handle_global,
NULL,
};
static gboolean
gst_vaapi_display_wayland_setup (GstVaapiDisplay * display)
{
GstVaapiDisplayWaylandPrivate *const priv =
GST_VAAPI_DISPLAY_WAYLAND_GET_PRIVATE (display);
wl_display_set_user_data (priv->wl_display, priv);
priv->registry = wl_display_get_registry (priv->wl_display);
wl_registry_add_listener (priv->registry, &registry_listener, priv);
priv->event_fd = wl_display_get_fd (priv->wl_display);
wl_display_roundtrip (priv->wl_display);
if (!priv->width || !priv->height) {
wl_display_roundtrip (priv->wl_display);
if (!priv->width || !priv->height) {
GST_ERROR ("failed to determine the display size");
return FALSE;
}
}
if (!priv->compositor) {
GST_ERROR ("failed to bind compositor interface");
return FALSE;
}
if (!priv->shell) {
GST_ERROR ("failed to bind shell interface");
return FALSE;
}
return TRUE;
}
static gboolean
gst_vaapi_display_wayland_bind_display (GstVaapiDisplay * display,
gpointer native_display)
{
GstVaapiDisplayWaylandPrivate *const priv =
GST_VAAPI_DISPLAY_WAYLAND_GET_PRIVATE (display);
priv->wl_display = native_display;
priv->use_foreign_display = TRUE;
/* XXX: how to get socket/display name? */
GST_WARNING ("wayland: get display name");
set_display_name (display, NULL);
return gst_vaapi_display_wayland_setup (display);
}
static gboolean
gst_vaapi_display_wayland_open_display (GstVaapiDisplay * display,
const gchar * name)
{
GstVaapiDisplayWaylandPrivate *const priv =
GST_VAAPI_DISPLAY_WAYLAND_GET_PRIVATE (display);
GstVaapiDisplayCache *const cache = GST_VAAPI_DISPLAY_CACHE (display);
const GstVaapiDisplayInfo *info;
int dsp_error = 0;
if (!set_display_name (display, name))
return FALSE;
info = gst_vaapi_display_cache_lookup_custom (cache, compare_display_name,
priv->display_name, g_display_types);
if (info) {
wl_display_roundtrip (info->native_display);
if ((dsp_error = wl_display_get_error (info->native_display)))
GST_ERROR ("wayland display error detected: %d", dsp_error);
}
if (info && !dsp_error) {
priv->wl_display = info->native_display;
priv->use_foreign_display = TRUE;
} else {
priv->wl_display = wl_display_connect (name);
if (!priv->wl_display)
return FALSE;
priv->use_foreign_display = FALSE;
}
return gst_vaapi_display_wayland_setup (display);
}
static void
gst_vaapi_display_wayland_close_display (GstVaapiDisplay * display)
{
GstVaapiDisplayWaylandPrivate *const priv =
GST_VAAPI_DISPLAY_WAYLAND_GET_PRIVATE (display);
if (priv->output) {
wl_output_destroy (priv->output);
priv->output = NULL;
}
if (priv->shell) {
wl_shell_destroy (priv->shell);
priv->shell = NULL;
}
if (priv->compositor) {
wl_compositor_destroy (priv->compositor);
priv->compositor = NULL;
}
if (priv->registry) {
wl_registry_destroy (priv->registry);
priv->registry = NULL;
}
if (priv->wl_display) {
if (!priv->use_foreign_display)
wl_display_disconnect (priv->wl_display);
priv->wl_display = NULL;
}
if (priv->display_name) {
g_free (priv->display_name);
priv->display_name = NULL;
}
}
static gboolean
gst_vaapi_display_wayland_get_display_info (GstVaapiDisplay * display,
GstVaapiDisplayInfo * info)
{
GstVaapiDisplayWaylandPrivate *const priv =
GST_VAAPI_DISPLAY_WAYLAND_GET_PRIVATE (display);
GstVaapiDisplayCache *const cache = GST_VAAPI_DISPLAY_CACHE (display);
const GstVaapiDisplayInfo *cached_info;
/* Return any cached info even if child has its own VA display */
cached_info = gst_vaapi_display_cache_lookup_by_native_display (cache,
priv->wl_display, g_display_types);
if (cached_info) {
*info = *cached_info;
return TRUE;
}
/* Otherwise, create VA display if there is none already */
info->native_display = priv->wl_display;
info->display_name = priv->display_name;
if (!info->va_display) {
info->va_display = vaGetDisplayWl (priv->wl_display);
if (!info->va_display)
return FALSE;
info->display_type = GST_VAAPI_DISPLAY_TYPE_WAYLAND;
}
return TRUE;
}
static void
gst_vaapi_display_wayland_get_size (GstVaapiDisplay * display,
guint * pwidth, guint * pheight)
{
GstVaapiDisplayWaylandPrivate *const priv =
GST_VAAPI_DISPLAY_WAYLAND_GET_PRIVATE (display);
if (!priv->output)
return;
if (pwidth)
*pwidth = priv->width;
if (pheight)
*pheight = priv->height;
}
static void
gst_vaapi_display_wayland_get_size_mm (GstVaapiDisplay * display,
guint * pwidth, guint * pheight)
{
GstVaapiDisplayWaylandPrivate *const priv =
GST_VAAPI_DISPLAY_WAYLAND_GET_PRIVATE (display);
if (!priv->output)
return;
if (pwidth)
*pwidth = priv->phys_width;
if (pheight)
*pheight = priv->phys_height;
}
static GstVaapiWindow *
gst_vaapi_display_wayland_create_window (GstVaapiDisplay * display,
GstVaapiID id, guint width, guint height)
{
if (id != GST_VAAPI_ID_INVALID)
return NULL;
return gst_vaapi_window_wayland_new (display, width, height);
}
static void
gst_vaapi_display_wayland_init (GstVaapiDisplayWayland * display)
{
GstVaapiDisplayWaylandPrivate *const priv =
gst_vaapi_display_wayland_get_instance_private (display);
display->priv = priv;
priv->event_fd = -1;
}
static void
gst_vaapi_display_wayland_class_init (GstVaapiDisplayWaylandClass * klass)
{
GstVaapiDisplayClass *const dpy_class = GST_VAAPI_DISPLAY_CLASS (klass);
dpy_class->display_type = GST_VAAPI_DISPLAY_TYPE_WAYLAND;
dpy_class->bind_display = gst_vaapi_display_wayland_bind_display;
dpy_class->open_display = gst_vaapi_display_wayland_open_display;
dpy_class->close_display = gst_vaapi_display_wayland_close_display;
dpy_class->get_display = gst_vaapi_display_wayland_get_display_info;
dpy_class->get_size = gst_vaapi_display_wayland_get_size;
dpy_class->get_size_mm = gst_vaapi_display_wayland_get_size_mm;
dpy_class->create_window = gst_vaapi_display_wayland_create_window;
}
/**
* gst_vaapi_display_wayland_new:
* @display_name: the Wayland display name
*
* Opens an Wayland #wl_display using @display_name and returns a
* newly allocated #GstVaapiDisplay object. The Wayland display will
* be cloed when the reference count of the object reaches zero.
*
* Return value: a newly allocated #GstVaapiDisplay object
*/
GstVaapiDisplay *
gst_vaapi_display_wayland_new (const gchar * display_name)
{
return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_WAYLAND,
NULL), GST_VAAPI_DISPLAY_INIT_FROM_DISPLAY_NAME,
(gpointer) display_name);
}
/**
* gst_vaapi_display_wayland_new_with_display:
* @wl_display: an Wayland #wl_display
*
* Creates a #GstVaapiDisplay based on the Wayland @wl_display
* display. The caller still owns the display and must call
* wl_display_disconnect() when all #GstVaapiDisplay references are
* released. Doing so too early can yield undefined behaviour.
*
* Return value: a newly allocated #GstVaapiDisplay object
*/
GstVaapiDisplay *
gst_vaapi_display_wayland_new_with_display (struct wl_display * wl_display)
{
g_return_val_if_fail (wl_display, NULL);
return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_WAYLAND,
NULL), GST_VAAPI_DISPLAY_INIT_FROM_NATIVE_DISPLAY, wl_display);
}
/**
* gst_vaapi_display_wayland_get_display:
* @display: a #GstVaapiDisplayWayland
*
* Returns the underlying Wayland #wl_display that was created by
* gst_vaapi_display_wayland_new() or that was bound from
* gst_vaapi_display_wayland_new_with_display().
*
* Return value: the Wayland #wl_display attached to @display
*/
struct wl_display *
gst_vaapi_display_wayland_get_display (GstVaapiDisplayWayland * display)
{
g_return_val_if_fail (GST_VAAPI_IS_DISPLAY_WAYLAND (display), NULL);
return GST_VAAPI_DISPLAY_WL_DISPLAY (display);
}