mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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335 lines
9.5 KiB
C
335 lines
9.5 KiB
C
/*
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* gstvaapidisplay_x11.c - VA/X11 display abstraction
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*
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* gstreamer-vaapi (C) 2010 Splitted-Desktop Systems
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/**
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* SECTION:gstvaapidisplay_x11
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* @short_description: VA/X11 display abstraction
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*/
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#include "config.h"
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#include "gstvaapiutils.h"
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#include "gstvaapidisplay_x11.h"
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#define DEBUG 1
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#include "gstvaapidebug.h"
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G_DEFINE_TYPE(GstVaapiDisplayX11,
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gst_vaapi_display_x11,
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GST_VAAPI_TYPE_DISPLAY);
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#define GST_VAAPI_DISPLAY_X11_GET_PRIVATE(obj) \
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(G_TYPE_INSTANCE_GET_PRIVATE((obj), \
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GST_VAAPI_TYPE_DISPLAY_X11, \
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GstVaapiDisplayX11Private))
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struct _GstVaapiDisplayX11Private {
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gboolean create_display;
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gchar *display_name;
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Display *x11_display;
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int x11_screen;
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VADisplay *va_display;
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};
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enum {
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PROP_0,
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PROP_DISPLAY_NAME,
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PROP_X11_DISPLAY
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};
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static void
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gst_vaapi_display_x11_finalize(GObject *object)
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{
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G_OBJECT_CLASS(gst_vaapi_display_x11_parent_class)->finalize(object);
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}
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static void
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set_display_name(GstVaapiDisplayX11 *display, const gchar *display_name)
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{
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GstVaapiDisplayX11Private * const priv = display->priv;
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g_free(priv->display_name);
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if (display_name)
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priv->display_name = g_strdup(display_name);
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else
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priv->display_name = NULL;
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}
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static void
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gst_vaapi_display_x11_set_property(
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GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec
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)
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{
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GstVaapiDisplayX11 * const display = GST_VAAPI_DISPLAY_X11(object);
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switch (prop_id) {
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case PROP_DISPLAY_NAME:
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set_display_name(display, g_value_get_string(value));
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break;
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case PROP_X11_DISPLAY:
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display->priv->x11_display = g_value_get_pointer(value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_vaapi_display_x11_get_property(
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GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec
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)
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{
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GstVaapiDisplayX11 * const display = GST_VAAPI_DISPLAY_X11(object);
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switch (prop_id) {
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case PROP_DISPLAY_NAME:
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g_value_set_string(value, display->priv->display_name);
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break;
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case PROP_X11_DISPLAY:
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g_value_set_pointer(value, gst_vaapi_display_x11_get_display(display));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_vaapi_display_x11_constructed(GObject *object)
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{
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GstVaapiDisplayX11 * const display = GST_VAAPI_DISPLAY_X11(object);
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GObjectClass *parent_class;
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display->priv->create_display = display->priv->x11_display == NULL;
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/* Reset display-name if the user provided his own X11 display */
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if (!display->priv->create_display)
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set_display_name(display, XDisplayString(display->priv->x11_display));
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parent_class = G_OBJECT_CLASS(gst_vaapi_display_x11_parent_class);
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if (parent_class->constructed)
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parent_class->constructed(object);
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}
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static gboolean
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gst_vaapi_display_x11_open_display(GstVaapiDisplay *display)
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{
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GstVaapiDisplayX11Private * const priv =
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GST_VAAPI_DISPLAY_X11(display)->priv;
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/* XXX: maintain an X11 display cache */
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if (!priv->x11_display && priv->create_display)
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priv->x11_display = XOpenDisplay(priv->display_name);
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if (!priv->x11_display)
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return FALSE;
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priv->x11_screen = DefaultScreen(priv->x11_display);
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priv->va_display = vaGetDisplay(priv->x11_display);
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return priv->va_display != NULL;
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}
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static void
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gst_vaapi_display_x11_close_display(GstVaapiDisplay *display)
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{
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GstVaapiDisplayX11Private * const priv =
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GST_VAAPI_DISPLAY_X11(display)->priv;
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if (priv->x11_display) {
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if (priv->create_display)
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XCloseDisplay(priv->x11_display);
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priv->x11_display = NULL;
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}
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if (priv->display_name) {
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g_free(priv->display_name);
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priv->display_name = NULL;
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}
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priv->va_display = NULL;
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}
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static VADisplay
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gst_vaapi_display_x11_get_va_display(GstVaapiDisplay *display)
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{
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return GST_VAAPI_DISPLAY_X11(display)->priv->va_display;
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}
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static void
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gst_vaapi_display_x11_get_size(
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GstVaapiDisplay *display,
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guint *pwidth,
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guint *pheight
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)
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{
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GstVaapiDisplayX11Private * const priv =
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GST_VAAPI_DISPLAY_X11(display)->priv;
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if (!priv->x11_display)
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return;
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if (pwidth)
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*pwidth = DisplayWidth(priv->x11_display, priv->x11_screen);
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if (pheight)
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*pheight = DisplayHeight(priv->x11_display, priv->x11_screen);
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}
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static void
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gst_vaapi_display_x11_get_size_mm(
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GstVaapiDisplay *display,
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guint *pwidth,
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guint *pheight
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)
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{
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GstVaapiDisplayX11Private * const priv =
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GST_VAAPI_DISPLAY_X11(display)->priv;
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if (!priv->x11_display)
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return;
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if (pwidth)
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*pwidth = DisplayWidthMM(priv->x11_display, priv->x11_screen);
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if (pheight)
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*pheight = DisplayHeightMM(priv->x11_display, priv->x11_screen);
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}
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static void
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gst_vaapi_display_x11_class_init(GstVaapiDisplayX11Class *klass)
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{
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GObjectClass * const object_class = G_OBJECT_CLASS(klass);
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GstVaapiDisplayClass * const dpy_class = GST_VAAPI_DISPLAY_CLASS(klass);
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g_type_class_add_private(klass, sizeof(GstVaapiDisplayX11Private));
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object_class->finalize = gst_vaapi_display_x11_finalize;
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object_class->set_property = gst_vaapi_display_x11_set_property;
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object_class->get_property = gst_vaapi_display_x11_get_property;
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object_class->constructed = gst_vaapi_display_x11_constructed;
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dpy_class->open_display = gst_vaapi_display_x11_open_display;
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dpy_class->close_display = gst_vaapi_display_x11_close_display;
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dpy_class->get_display = gst_vaapi_display_x11_get_va_display;
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dpy_class->get_size = gst_vaapi_display_x11_get_size;
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dpy_class->get_size_mm = gst_vaapi_display_x11_get_size_mm;
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/**
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* GstVaapiDisplayX11:x11-display:
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*
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* The X11 #Display that was created by gst_vaapi_display_x11_new()
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* or that was bound from gst_vaapi_display_x11_new_with_display().
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*/
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g_object_class_install_property
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(object_class,
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PROP_X11_DISPLAY,
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g_param_spec_pointer("x11-display",
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"X11 display",
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"X11 display",
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G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
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/**
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* GstVaapiDisplayX11:display-name:
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*
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* The X11 display name.
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*/
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g_object_class_install_property
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(object_class,
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PROP_DISPLAY_NAME,
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g_param_spec_string("display-name",
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"X11 display name",
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"X11 display name",
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NULL,
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G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
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}
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static void
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gst_vaapi_display_x11_init(GstVaapiDisplayX11 *display)
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{
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GstVaapiDisplayX11Private *priv = GST_VAAPI_DISPLAY_X11_GET_PRIVATE(display);
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display->priv = priv;
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priv->create_display = TRUE;
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priv->x11_display = NULL;
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priv->x11_screen = 0;
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priv->display_name = NULL;
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}
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/**
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* gst_vaapi_display_x11_new:
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* @display_name: the X11 display name
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*
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* Opens an X11 #Display using @display_name and returns a newly
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* allocated #GstVaapiDisplay object. The X11 display will be cloed
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* when the reference count of the object reaches zero.
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*
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* Return value: a newly allocated #GstVaapiDisplay object
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*/
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GstVaapiDisplay *
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gst_vaapi_display_x11_new(const gchar *display_name)
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{
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return g_object_new(GST_VAAPI_TYPE_DISPLAY_X11,
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"display-name", display_name,
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NULL);
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}
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/**
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* gst_vaapi_display_x11_new_with_display:
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* @x11_display: an X11 #Display
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*
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* Creates a #GstVaapiDisplay based on the X11 @x11_display
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* display. The caller still owns the display and must call
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* XCloseDisplay() when all #GstVaapiDisplay references are
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* released. Doing so too early can yield undefined behaviour.
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*
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* Return value: a newly allocated #GstVaapiDisplay object
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*/
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GstVaapiDisplay *
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gst_vaapi_display_x11_new_with_display(Display *x11_display)
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{
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return g_object_new(GST_VAAPI_TYPE_DISPLAY_X11,
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"x11-display", x11_display,
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NULL);
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}
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/**
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* gst_vaapi_display_x11_get_display:
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* @display: a #GstVaapiDisplayX11
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*
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* Returns the underlying X11 #Display that was created by
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* gst_vaapi_display_x11_new() or that was bound from
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* gst_vaapi_display_x11_new_with_display().
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*
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* Return value: the X11 #Display attached to @display
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*/
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Display *
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gst_vaapi_display_x11_get_display(GstVaapiDisplayX11 *display)
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{
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g_return_val_if_fail(GST_VAAPI_IS_DISPLAY_X11(display), NULL);
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return display->priv->x11_display;
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}
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