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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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5cabf4e305
Add API to transfer VA urfaces to native pixmaps. Also add an API to render a native pixmap, for completeness. In general, rendering to pixmap would only be useful to certain VA drivers and use cases on X11 display servers. e.g. GLX_EXT_texture_from_pixmap (TFP) handled in an upper layer.
493 lines
13 KiB
C
493 lines
13 KiB
C
/*
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* gstvaapiwindow.c - VA window abstraction
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*
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* Copyright (C) 2010-2011 Splitted-Desktop Systems
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* Copyright (C) 2011-2012 Intel Corporation
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*/
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/**
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* SECTION:gstvaapiwindow
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* @short_description: VA window abstraction
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*/
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#include "sysdeps.h"
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#include "gstvaapiwindow.h"
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#include "gstvaapiwindow_priv.h"
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#include "gstvaapisurface_priv.h"
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#define DEBUG 1
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#include "gstvaapidebug.h"
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/* Ensure those symbols are actually defined in the resulting libraries */
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#undef gst_vaapi_window_ref
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#undef gst_vaapi_window_unref
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#undef gst_vaapi_window_replace
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static void
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gst_vaapi_window_ensure_size(GstVaapiWindow *window)
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{
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const GstVaapiWindowClass * const klass =
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GST_VAAPI_WINDOW_GET_CLASS(window);
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if (!window->check_geometry)
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return;
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if (klass->get_geometry)
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klass->get_geometry(window, NULL, NULL,
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&window->width, &window->height);
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window->check_geometry = FALSE;
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window->is_fullscreen = (window->width == window->display_width &&
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window->height == window->display_height);
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}
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static gboolean
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gst_vaapi_window_create(GstVaapiWindow *window, guint width, guint height)
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{
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gst_vaapi_display_get_size(
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GST_VAAPI_OBJECT_DISPLAY(window),
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&window->display_width,
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&window->display_height
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);
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if (!GST_VAAPI_WINDOW_GET_CLASS(window)->create(window, &width, &height))
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return FALSE;
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if (width != window->width || height != window->height) {
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GST_DEBUG("backend resized window to %ux%u", width, height);
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window->width = width;
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window->height = height;
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}
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return TRUE;
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}
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GstVaapiWindow *
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gst_vaapi_window_new(const GstVaapiWindowClass *window_class,
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GstVaapiDisplay *display, guint width, guint height)
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{
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GstVaapiWindow *window;
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g_return_val_if_fail(width > 0, NULL);
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g_return_val_if_fail(height > 0, NULL);
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window = gst_vaapi_object_new(GST_VAAPI_OBJECT_CLASS(window_class),
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display);
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if (!window)
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return NULL;
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GST_VAAPI_OBJECT_ID(window) = 0;
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if (!gst_vaapi_window_create(window, width, height))
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goto error;
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return window;
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error:
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gst_vaapi_window_unref_internal(window);
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return NULL;
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}
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GstVaapiWindow *
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gst_vaapi_window_new_from_native(const GstVaapiWindowClass *window_class,
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GstVaapiDisplay *display, gpointer native_window)
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{
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GstVaapiWindow *window;
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window = gst_vaapi_object_new(GST_VAAPI_OBJECT_CLASS(window_class),
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display);
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if (!window)
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return NULL;
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GST_VAAPI_OBJECT_ID(window) = GPOINTER_TO_SIZE(native_window);
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window->use_foreign_window = TRUE;
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if (!gst_vaapi_window_create(window, 0, 0))
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goto error;
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return window;
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error:
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gst_vaapi_window_unref_internal(window);
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return NULL;
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}
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/**
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* gst_vaapi_window_ref:
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* @window: a #GstVaapiWindow
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*
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* Atomically increases the reference count of the given @window by one.
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*
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* Returns: The same @window argument
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*/
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GstVaapiWindow *
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gst_vaapi_window_ref(GstVaapiWindow *window)
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{
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return gst_vaapi_window_ref_internal(window);
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}
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/**
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* gst_vaapi_window_unref:
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* @window: a #GstVaapiWindow
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*
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* Atomically decreases the reference count of the @window by one. If
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* the reference count reaches zero, the window will be free'd.
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*/
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void
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gst_vaapi_window_unref(GstVaapiWindow *window)
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{
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gst_vaapi_window_unref_internal(window);
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}
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/**
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* gst_vaapi_window_replace:
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* @old_window_ptr: a pointer to a #GstVaapiWindow
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* @new_window: a #GstVaapiWindow
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*
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* Atomically replaces the window window held in @old_window_ptr with
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* @new_window. This means that @old_window_ptr shall reference a
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* valid window. However, @new_window can be NULL.
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*/
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void
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gst_vaapi_window_replace(GstVaapiWindow **old_window_ptr,
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GstVaapiWindow *new_window)
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{
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gst_vaapi_window_replace_internal(old_window_ptr, new_window);
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}
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/**
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* gst_vaapi_window_get_display:
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* @window: a #GstVaapiWindow
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*
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* Returns the #GstVaapiDisplay this @window is bound to.
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*
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* Return value: the parent #GstVaapiDisplay object
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*/
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GstVaapiDisplay *
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gst_vaapi_window_get_display(GstVaapiWindow *window)
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{
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g_return_val_if_fail(window != NULL, NULL);
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return GST_VAAPI_OBJECT_DISPLAY(window);
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}
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/**
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* gst_vaapi_window_show:
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* @window: a #GstVaapiWindow
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*
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* Flags a window to be displayed. Any window that is not shown will
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* not appear on the screen.
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*/
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void
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gst_vaapi_window_show(GstVaapiWindow *window)
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{
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g_return_if_fail(window != NULL);
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GST_VAAPI_WINDOW_GET_CLASS(window)->show(window);
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window->check_geometry = TRUE;
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}
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/**
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* gst_vaapi_window_hide:
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* @window: a #GstVaapiWindow
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*
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* Reverses the effects of gst_vaapi_window_show(), causing the window
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* to be hidden (invisible to the user).
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*/
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void
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gst_vaapi_window_hide(GstVaapiWindow *window)
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{
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g_return_if_fail(window != NULL);
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GST_VAAPI_WINDOW_GET_CLASS(window)->hide(window);
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}
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/**
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* gst_vaapi_window_get_fullscreen:
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* @window: a #GstVaapiWindow
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*
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* Retrieves whether the @window is fullscreen or not
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*
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* Return value: %TRUE if the window is fullscreen
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*/
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gboolean
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gst_vaapi_window_get_fullscreen(GstVaapiWindow *window)
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{
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g_return_val_if_fail(window != NULL, FALSE);
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gst_vaapi_window_ensure_size(window);
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return window->is_fullscreen;
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}
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/**
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* gst_vaapi_window_set_fullscreen:
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* @window: a #GstVaapiWindow
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* @fullscreen: %TRUE to request window to get fullscreen
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*
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* Requests to place the @window in fullscreen or unfullscreen states.
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*/
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void
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gst_vaapi_window_set_fullscreen(GstVaapiWindow *window, gboolean fullscreen)
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{
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const GstVaapiWindowClass *klass;
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g_return_if_fail(window != NULL);
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klass = GST_VAAPI_WINDOW_GET_CLASS(window);
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if (window->is_fullscreen != fullscreen &&
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klass->set_fullscreen && klass->set_fullscreen(window, fullscreen)) {
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window->is_fullscreen = fullscreen;
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window->check_geometry = TRUE;
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}
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}
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/**
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* gst_vaapi_window_get_width:
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* @window: a #GstVaapiWindow
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*
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* Retrieves the width of a #GstVaapiWindow.
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*
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* Return value: the width of the @window, in pixels
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*/
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guint
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gst_vaapi_window_get_width(GstVaapiWindow *window)
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{
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g_return_val_if_fail(window != NULL, 0);
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gst_vaapi_window_ensure_size(window);
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return window->width;
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}
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/**
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* gst_vaapi_window_get_height:
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* @window: a #GstVaapiWindow
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*
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* Retrieves the height of a #GstVaapiWindow
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*
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* Return value: the height of the @window, in pixels
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*/
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guint
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gst_vaapi_window_get_height(GstVaapiWindow *window)
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{
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g_return_val_if_fail(window != NULL, 0);
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gst_vaapi_window_ensure_size(window);
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return window->height;
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}
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/**
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* gst_vaapi_window_get_size:
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* @window: a #GstVaapiWindow
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* @pwidth: return location for the width, or %NULL
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* @pheight: return location for the height, or %NULL
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*
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* Retrieves the dimensions of a #GstVaapiWindow.
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*/
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void
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gst_vaapi_window_get_size(GstVaapiWindow *window, guint *pwidth, guint *pheight)
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{
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g_return_if_fail(window != NULL);
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gst_vaapi_window_ensure_size(window);
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if (pwidth)
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*pwidth = window->width;
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if (pheight)
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*pheight = window->height;
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}
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/**
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* gst_vaapi_window_set_width:
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* @window: a #GstVaapiWindow
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* @width: requested new width for the window, in pixels
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*
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* Resizes the @window to match the specified @width.
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*/
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void
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gst_vaapi_window_set_width(GstVaapiWindow *window, guint width)
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{
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g_return_if_fail(window != NULL);
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gst_vaapi_window_set_size(window, width, window->height);
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}
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/**
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* gst_vaapi_window_set_height:
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* @window: a #GstVaapiWindow
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* @height: requested new height for the window, in pixels
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*
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* Resizes the @window to match the specified @height.
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*/
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void
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gst_vaapi_window_set_height(GstVaapiWindow *window, guint height)
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{
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g_return_if_fail(window != NULL);
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gst_vaapi_window_set_size(window, window->width, height);
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}
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/**
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* gst_vaapi_window_set_size:
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* @window: a #GstVaapiWindow
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* @width: requested new width for the window, in pixels
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* @height: requested new height for the window, in pixels
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*
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* Resizes the @window to match the specified @width and @height.
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*/
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void
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gst_vaapi_window_set_size(GstVaapiWindow *window, guint width, guint height)
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{
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g_return_if_fail(window != NULL);
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if (width == window->width && height == window->height)
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return;
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if (!GST_VAAPI_WINDOW_GET_CLASS(window)->resize(window, width, height))
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return;
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window->width = width;
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window->height = height;
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}
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static inline void
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get_surface_rect(GstVaapiSurface *surface, GstVaapiRectangle *rect)
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{
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rect->x = 0;
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rect->y = 0;
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rect->width = GST_VAAPI_SURFACE_WIDTH(surface);
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rect->height = GST_VAAPI_SURFACE_HEIGHT(surface);
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}
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static inline void
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get_window_rect(GstVaapiWindow *window, GstVaapiRectangle *rect)
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{
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guint width, height;
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gst_vaapi_window_get_size(window, &width, &height);
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rect->x = 0;
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rect->y = 0;
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rect->width = width;
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rect->height = height;
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}
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/**
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* gst_vaapi_window_put_surface:
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* @window: a #GstVaapiWindow
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* @surface: a #GstVaapiSurface
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* @src_rect: the sub-rectangle of the source surface to
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* extract and process. If %NULL, the entire surface will be used.
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* @dst_rect: the sub-rectangle of the destination
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* window into which the surface is rendered. If %NULL, the entire
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* window will be used.
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* @flags: postprocessing flags. See #GstVaapiSurfaceRenderFlags
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*
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* Renders the @surface region specified by @src_rect into the @window
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* region specified by @dst_rect. The @flags specify how de-interlacing
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* (if needed), color space conversion, scaling and other postprocessing
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* transformations are performed.
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*
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* Return value: %TRUE on success
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*/
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gboolean
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gst_vaapi_window_put_surface(
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GstVaapiWindow *window,
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GstVaapiSurface *surface,
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const GstVaapiRectangle *src_rect,
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const GstVaapiRectangle *dst_rect,
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guint flags
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)
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{
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const GstVaapiWindowClass *klass;
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GstVaapiRectangle src_rect_default, dst_rect_default;
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g_return_val_if_fail(window != NULL, FALSE);
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g_return_val_if_fail(surface != NULL, FALSE);
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klass = GST_VAAPI_WINDOW_GET_CLASS(window);
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if (!klass->render)
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return FALSE;
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if (!src_rect) {
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src_rect = &src_rect_default;
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get_surface_rect(surface, &src_rect_default);
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}
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if (!dst_rect) {
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dst_rect = &dst_rect_default;
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get_window_rect(window, &dst_rect_default);
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}
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return klass->render(window, surface, src_rect, dst_rect, flags);
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}
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static inline void
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get_pixmap_rect(GstVaapiPixmap *pixmap, GstVaapiRectangle *rect)
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{
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guint width, height;
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gst_vaapi_pixmap_get_size(pixmap, &width, &height);
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rect->x = 0;
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rect->y = 0;
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rect->width = width;
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rect->height = height;
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}
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/**
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* gst_vaapi_window_put_pixmap:
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* @window: a #GstVaapiWindow
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* @pixmap: a #GstVaapiPixmap
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* @src_rect: the sub-rectangle of the source pixmap to
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* extract and process. If %NULL, the entire pixmap will be used.
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* @dst_rect: the sub-rectangle of the destination
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* window into which the pixmap is rendered. If %NULL, the entire
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* window will be used.
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*
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* Renders the @pixmap region specified by @src_rect into the @window
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* region specified by @dst_rect.
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*
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* Return value: %TRUE on success
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*/
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gboolean
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gst_vaapi_window_put_pixmap(
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GstVaapiWindow *window,
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GstVaapiPixmap *pixmap,
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const GstVaapiRectangle *src_rect,
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const GstVaapiRectangle *dst_rect
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)
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{
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const GstVaapiWindowClass *klass;
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GstVaapiRectangle src_rect_default, dst_rect_default;
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g_return_val_if_fail(window != NULL, FALSE);
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g_return_val_if_fail(pixmap != NULL, FALSE);
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klass = GST_VAAPI_WINDOW_GET_CLASS(window);
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if (!klass->render_pixmap)
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return FALSE;
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if (!src_rect) {
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src_rect = &src_rect_default;
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get_pixmap_rect(pixmap, &src_rect_default);
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}
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if (!dst_rect) {
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dst_rect = &dst_rect_default;
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get_window_rect(window, &dst_rect_default);
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}
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return klass->render_pixmap(window, pixmap, src_rect, dst_rect);
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}
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