gstreamer/gst-libs/gst/vaapi/gstvaapidisplay_wayland.c
Michael Olbrich bef64a6420 libs: display: wayland: add basic dmabuf protocol support
This is just the basic infrastructure. Hook up the interface and collect
all supported formats.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/-/merge_requests/346>
2020-07-27 15:02:19 +00:00

453 lines
13 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 "gstvaapidisplay_priv.h"
#include "gstvaapidisplay_wayland.h"
#include "gstvaapidisplay_wayland_priv.h"
#include "gstvaapiwindow_wayland.h"
#define DEBUG_VAAPI_DISPLAY 1
#include "gstvaapidebug.h"
G_DEFINE_TYPE_WITH_PRIVATE (GstVaapiDisplayWayland, gst_vaapi_display_wayland,
GST_TYPE_VAAPI_DISPLAY);
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;
}
/* 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
handle_xdg_wm_base_ping (void *user_data, struct xdg_wm_base *xdg_wm_base,
uint32_t serial)
{
xdg_wm_base_pong (xdg_wm_base, serial);
}
static const struct xdg_wm_base_listener xdg_wm_base_listener = {
handle_xdg_wm_base_ping
};
static void
dmabuf_format (void *data, struct zwp_linux_dmabuf_v1 *zwp_linux_dmabuf,
uint32_t format)
{
}
static void
dmabuf_modifier (void *data, struct zwp_linux_dmabuf_v1 *zwp_linux_dmabuf,
uint32_t format, uint32_t modifier_hi, uint32_t modifier_lo)
{
GstVaapiDisplayWaylandPrivate *const priv = data;
GstDRMFormat drm_format = {
.format = format,
.modifier = (guint64) modifier_hi << 32 | modifier_lo
};
if (gst_vaapi_video_format_from_drm_format (format) ==
GST_VIDEO_FORMAT_UNKNOWN) {
GST_LOG ("ignoring unknown format 0x%x with modifier 0x%" G_GINT64_MODIFIER
"x", format, drm_format.modifier);
return;
}
GST_LOG ("got format 0x%x (%s) with modifier 0x%" G_GINT64_MODIFIER "x",
format, gst_video_format_to_string (gst_vaapi_video_format_from_drm_format
(format)), drm_format.modifier);
g_array_append_val (priv->dmabuf_formats, drm_format);
}
static const struct zwp_linux_dmabuf_v1_listener dmabuf_listener = {
dmabuf_format,
dmabuf_modifier,
};
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->wl_shell = wl_registry_bind (registry, id, &wl_shell_interface, 1);
else if (strcmp (interface, "xdg_wm_base") == 0) {
priv->xdg_wm_base =
wl_registry_bind (registry, id, &xdg_wm_base_interface, 1);
xdg_wm_base_add_listener (priv->xdg_wm_base, &xdg_wm_base_listener, priv);
} else if (strcmp (interface, "wl_output") == 0) {
if (!priv->output) {
priv->output = wl_registry_bind (registry, id, &wl_output_interface, 1);
wl_output_add_listener (priv->output, &output_listener, priv);
}
} else if (strcmp (interface, "zwp_linux_dmabuf_v1") == 0) {
priv->dmabuf =
wl_registry_bind (registry, id, &zwp_linux_dmabuf_v1_interface, 3);
zwp_linux_dmabuf_v1_add_listener (priv->dmabuf, &dmabuf_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->xdg_wm_base)
return TRUE;
if (!priv->wl_shell) {
GST_ERROR ("failed to bind wl_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);
if (!set_display_name (display, name))
return FALSE;
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);
g_clear_pointer (&priv->output, wl_output_destroy);
g_clear_pointer (&priv->wl_shell, wl_shell_destroy);
g_clear_pointer (&priv->xdg_wm_base, xdg_wm_base_destroy);
g_clear_pointer (&priv->compositor, wl_compositor_destroy);
g_clear_pointer (&priv->registry, wl_registry_destroy);
g_array_unref (priv->dmabuf_formats);
if (priv->wl_display) {
if (!priv->use_foreign_display)
wl_display_disconnect (priv->wl_display);
priv->wl_display = NULL;
}
g_clear_pointer (&priv->display_name, g_free);
}
static gboolean
gst_vaapi_display_wayland_get_display_info (GstVaapiDisplay * display,
GstVaapiDisplayInfo * info)
{
GstVaapiDisplayWaylandPrivate *const priv =
GST_VAAPI_DISPLAY_WAYLAND_GET_PRIVATE (display);
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;
}
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;
priv->dmabuf_formats = g_array_new (FALSE, FALSE, sizeof (GstDRMFormat));
}
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)
{
GstVaapiDisplay *display;
display = g_object_new (GST_TYPE_VAAPI_DISPLAY_WAYLAND, NULL);
return gst_vaapi_display_config (display,
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)
{
GstVaapiDisplay *display;
g_return_val_if_fail (wl_display, NULL);
display = g_object_new (GST_TYPE_VAAPI_DISPLAY_WAYLAND, NULL);
return gst_vaapi_display_config (display,
GST_VAAPI_DISPLAY_INIT_FROM_NATIVE_DISPLAY, wl_display);
}
/**
* gst_vaapi_display_wayland_new_with_va_display:
* @va_display: a VADisplay #va_display
* @wl_display: an Wayland #wl_display
*
* Creates a #GstVaapiDisplay based on the VADisplay @va_display and
* the Wayland @wl_display display.
* The caller still owns the display and must call
* wl_display_disconnect() when all #GstVaapiDisplay references are
* released.
*
* Return value: a newly allocated #GstVaapiDisplay object
*/
GstVaapiDisplay *
gst_vaapi_display_wayland_new_with_va_display (VADisplay va_display,
struct wl_display * wl_display)
{
GstVaapiDisplay *display;
GstVaapiDisplayInfo info = {
.va_display = va_display,
.native_display = wl_display,
};
g_return_val_if_fail (wl_display, NULL);
display = g_object_new (GST_TYPE_VAAPI_DISPLAY_WAYLAND, NULL);
if (!gst_vaapi_display_config (display,
GST_VAAPI_DISPLAY_INIT_FROM_VA_DISPLAY, &info)) {
gst_object_unref (display);
return NULL;
}
return 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);
}