gst-libs/gst/vaapi/gstvaapiwindow_drm.c

   1 /*
   2  *  gstvaapiwindow_drm.c - VA/DRM window abstraction
   3  *
   4  *  Copyright (C) 2012 Intel Corporation
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Lesser General Public License
   8  *  as published by the Free Software Foundation; either version 2.1
   9  *  of the License, or (at your option) any later version.
  10  *
  11  *  This library is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  *  Lesser General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Lesser General Public
  17  *  License along with this library; if not, write to the Free
  18  *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  *  Boston, MA 02110-1301 USA
  20  */
  21
  22 /**
  23  * SECTION:gstvaapiwindow_drm
  24  * @short_description: VA/DRM dummy window abstraction
  25  */
  26
  27 #include "sysdeps.h"
  28 #include "gstvaapiwindow_drm.h"
  29
  30 #define DEBUG 1
  31 #include "gstvaapidebug.h"
  32
  33 G_DEFINE_TYPE(GstVaapiWindowDRM,
  34               gst_vaapi_window_drm,
  35               GST_VAAPI_TYPE_WINDOW);
  36
  37 static gboolean
  38 gst_vaapi_window_drm_show(GstVaapiWindow *window)
  39 {
  40     return TRUE;
  41 }
  42
  43 static gboolean
  44 gst_vaapi_window_drm_hide(GstVaapiWindow *window)
  45 {
  46     return TRUE;
  47 }
  48
  49 static gboolean
  50 gst_vaapi_window_drm_create(
  51     GstVaapiWindow *window,
  52     guint          *width,
  53     guint          *height
  54 )
  55 {
  56     return TRUE;
  57 }
  58
  59 static void
  60 gst_vaapi_window_drm_destroy(GstVaapiWindow * window)
  61 {
  62 }
  63
  64 static gboolean
  65 gst_vaapi_window_drm_resize(
  66     GstVaapiWindow * window,
  67     guint            width,
  68     guint            height
  69 )
  70 {
  71     return TRUE;
  72 }
  73
  74 static gboolean
  75 gst_vaapi_window_drm_render(
  76     GstVaapiWindow          *window,
  77     GstVaapiSurface         *surface,
  78     const GstVaapiRectangle *src_rect,
  79     const GstVaapiRectangle *dst_rect,
  80     guint                    flags
  81 )
  82 {
  83     return TRUE;
  84 }
  85
  86 static void
  87 gst_vaapi_window_drm_finalize(GObject *object)
  88 {
  89     G_OBJECT_CLASS(gst_vaapi_window_drm_parent_class)->finalize(object);
  90 }
  91
  92 static void
  93 gst_vaapi_window_drm_constructed(GObject *object)
  94 {
  95     GObjectClass *parent_class;
  96
  97     parent_class = G_OBJECT_CLASS(gst_vaapi_window_drm_parent_class);
  98     if (parent_class->constructed)
  99         parent_class->constructed(object);
 100 }
 101
 102 static void
 103 gst_vaapi_window_drm_class_init(GstVaapiWindowDRMClass * klass)
 104 {
 105     GObjectClass * const object_class = G_OBJECT_CLASS(klass);
 106     GstVaapiWindowClass * const window_class = GST_VAAPI_WINDOW_CLASS(klass);
 107
 108     object_class->finalize      = gst_vaapi_window_drm_finalize;
 109     object_class->constructed   = gst_vaapi_window_drm_constructed;
 110
 111     window_class->create        = gst_vaapi_window_drm_create;
 112     window_class->destroy       = gst_vaapi_window_drm_destroy;
 113     window_class->show          = gst_vaapi_window_drm_show;
 114     window_class->hide          = gst_vaapi_window_drm_hide;
 115     window_class->render        = gst_vaapi_window_drm_render;
 116     window_class->resize        = gst_vaapi_window_drm_resize;
 117 }
 118
 119 static void
 120 gst_vaapi_window_drm_init(GstVaapiWindowDRM * window)
 121 {
 122 }
 123
 124 /**
 125  * gst_vaapi_window_drm_new:
 126  * @display: a #GstVaapiDisplay
 127  * @width: the requested window width, in pixels (unused)
 128  * @height: the requested windo height, in pixels (unused)
 129  *
 130  * Creates a dummy window. The window will be attached to the @display.
 131  * All rendering functions will return success since VA/DRM is a
 132  * renderless API.
 133  *
 134  * Note: this dummy window object is only necessary to fulfill cases
 135  * where the client application wants to automatically determine the
 136  * best display to use for the current system. As such, it provides
 137  * utility functions with the same API (function arguments) to help
 138  * implement uniform function tables.
 139  *
 140  * Return value: the newly allocated #GstVaapiWindow object
 141  */
 142 GstVaapiWindow *
 143 gst_vaapi_window_drm_new(
 144     GstVaapiDisplay *display,
 145     guint            width,
 146     guint            height
 147 )
 148 {
 149     GST_DEBUG("new window, size %ux%u", width, height);
 150
 151     g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), NULL);
 152     g_return_val_if_fail(width  > 0, NULL);
 153     g_return_val_if_fail(height > 0, NULL);
 154
 155     return g_object_new(GST_VAAPI_TYPE_WINDOW_DRM,
 156                         "display", display,
 157                         "id",      GST_VAAPI_ID(0),
 158                         "width",   width,
 159                         "height",  height,
 160                         NULL);
 161 }