gstreamer/gst-libs/gst/vaapi/gstvaapiwindow.c

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/*
* gstvaapiwindow.c - VA window abstraction
*
* gstreamer-vaapi (C) 2010 Splitted-Desktop Systems
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
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/**
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* SECTION:gstvaapiwindow
* @short_description: VA window abstraction
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*/
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#include "config.h"
#include "gstvaapiwindow.h"
#include "gstvaapi_priv.h"
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#define DEBUG 1
#include "gstvaapidebug.h"
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G_DEFINE_TYPE(GstVaapiWindow, gst_vaapi_window, GST_VAAPI_TYPE_OBJECT);
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#define GST_VAAPI_WINDOW_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE((obj), \
GST_VAAPI_TYPE_WINDOW, \
GstVaapiWindowPrivate))
struct _GstVaapiWindowPrivate {
guint width;
guint height;
gboolean is_constructed : 1;
guint is_fullscreen : 1;
guint is_fullscreen_changed : 1;
};
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enum {
PROP_0,
PROP_WIDTH,
PROP_HEIGHT,
PROP_FULLSCREEN
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};
static void
gst_vaapi_window_ensure_size(GstVaapiWindow *window)
{
GstVaapiWindowPrivate * const priv = window->priv;
GstVaapiWindowClass * const klass = GST_VAAPI_WINDOW_GET_CLASS(window);
guint display_width, display_height;
if (!priv->is_fullscreen_changed)
return;
if (klass->get_geometry)
klass->get_geometry(window, NULL, NULL, &priv->width, &priv->height);
gst_vaapi_display_get_size(
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GST_VAAPI_OBJECT_DISPLAY(window),
&display_width,
&display_height
);
priv->is_fullscreen_changed = FALSE;
priv->is_fullscreen = (priv->width == display_width &&
priv->height == display_height);
}
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static void
gst_vaapi_window_destroy(GstVaapiWindow *window)
{
GST_VAAPI_WINDOW_GET_CLASS(window)->destroy(window);
}
static gboolean
gst_vaapi_window_create(GstVaapiWindow *window)
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{
GstVaapiWindowPrivate * const priv = window->priv;
guint width, height;
width = priv->width;
height = priv->height;
if (!GST_VAAPI_WINDOW_GET_CLASS(window)->create(window, &width, &height))
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return FALSE;
if (width != priv->width || height != priv->height) {
GST_DEBUG("backend resized window to %ux%u", width, height);
priv->width = width;
priv->height = height;
}
return TRUE;
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}
static void
gst_vaapi_window_finalize(GObject *object)
{
gst_vaapi_window_destroy(GST_VAAPI_WINDOW(object));
G_OBJECT_CLASS(gst_vaapi_window_parent_class)->finalize(object);
}
static void
gst_vaapi_window_set_property(
GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec
)
{
GstVaapiWindow * const window = GST_VAAPI_WINDOW(object);
switch (prop_id) {
case PROP_WIDTH:
gst_vaapi_window_set_width(window, g_value_get_uint(value));
break;
case PROP_HEIGHT:
gst_vaapi_window_set_height(window, g_value_get_uint(value));
break;
case PROP_FULLSCREEN:
gst_vaapi_window_set_fullscreen(window, g_value_get_boolean(value));
break;
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default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void
gst_vaapi_window_get_property(
GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec
)
{
GstVaapiWindow * const window = GST_VAAPI_WINDOW(object);
switch (prop_id) {
case PROP_WIDTH:
g_value_set_uint(value, gst_vaapi_window_get_width(window));
break;
case PROP_HEIGHT:
g_value_set_uint(value, gst_vaapi_window_get_height(window));
break;
case PROP_FULLSCREEN:
g_value_set_boolean(value, window->priv->is_fullscreen);
break;
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default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void
gst_vaapi_window_constructed(GObject *object)
{
GstVaapiWindow * const window = GST_VAAPI_WINDOW(object);
GObjectClass *parent_class;
window->priv->is_constructed = gst_vaapi_window_create(window);
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parent_class = G_OBJECT_CLASS(gst_vaapi_window_parent_class);
if (parent_class->constructed)
parent_class->constructed(object);
}
static void
gst_vaapi_window_class_init(GstVaapiWindowClass *klass)
{
GObjectClass * const object_class = G_OBJECT_CLASS(klass);
g_type_class_add_private(klass, sizeof(GstVaapiWindowPrivate));
object_class->finalize = gst_vaapi_window_finalize;
object_class->set_property = gst_vaapi_window_set_property;
object_class->get_property = gst_vaapi_window_get_property;
object_class->constructed = gst_vaapi_window_constructed;
g_object_class_install_property
(object_class,
PROP_WIDTH,
g_param_spec_uint("width",
"Width",
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"The window width",
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1, G_MAXUINT32, 1,
G_PARAM_READWRITE));
g_object_class_install_property
(object_class,
PROP_HEIGHT,
g_param_spec_uint("height",
"height",
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"The window height",
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1, G_MAXUINT32, 1,
G_PARAM_READWRITE));
g_object_class_install_property
(object_class,
PROP_FULLSCREEN,
g_param_spec_boolean("fullscreen",
"Fullscreen",
"The fullscreen state of the window",
FALSE,
G_PARAM_READWRITE));
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}
static void
gst_vaapi_window_init(GstVaapiWindow *window)
{
GstVaapiWindowPrivate *priv = GST_VAAPI_WINDOW_GET_PRIVATE(window);
window->priv = priv;
priv->width = 1;
priv->height = 1;
priv->is_constructed = FALSE;
priv->is_fullscreen = FALSE;
priv->is_fullscreen_changed = FALSE;
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}
/**
* gst_vaapi_window_get_display:
* @window: a #GstVaapiWindow
*
* Returns the #GstVaapiDisplay this @window is bound to.
*
* Return value: the parent #GstVaapiDisplay object
*/
GstVaapiDisplay *
gst_vaapi_window_get_display(GstVaapiWindow *window)
{
g_return_val_if_fail(GST_VAAPI_IS_WINDOW(window), NULL);
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return GST_VAAPI_OBJECT_DISPLAY(window);
}
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/**
* gst_vaapi_window_show:
* @window: a #GstVaapiWindow
*
* Flags a window to be displayed. Any window that is not shown will
* not appear on the screen.
*/
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void
gst_vaapi_window_show(GstVaapiWindow *window)
{
g_return_if_fail(GST_VAAPI_IS_WINDOW(window));
g_return_if_fail(window->priv->is_constructed);
GST_VAAPI_WINDOW_GET_CLASS(window)->show(window);
}
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/**
* gst_vaapi_window_hide:
* @window: a #GstVaapiWindow
*
* Reverses the effects of gst_vaapi_window_show(), causing the window
* to be hidden (invisible to the user).
*/
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void
gst_vaapi_window_hide(GstVaapiWindow *window)
{
g_return_if_fail(GST_VAAPI_IS_WINDOW(window));
g_return_if_fail(window->priv->is_constructed);
GST_VAAPI_WINDOW_GET_CLASS(window)->hide(window);
}
/**
* gst_vaapi_window_get_fullscreen:
* @window: a #GstVaapiWindow
*
* Retrieves whether the @window is fullscreen or not
*
* Return value: %TRUE if the window is fullscreen
*/
gboolean
gst_vaapi_window_get_fullscreen(GstVaapiWindow *window)
{
g_return_val_if_fail(GST_VAAPI_IS_WINDOW(window), FALSE);
gst_vaapi_window_ensure_size(window);
return window->priv->is_fullscreen;
}
/**
* gst_vaapi_window_set_fullscreen:
* @window: a #GstVaapiWindow
* @fullscreen: %TRUE to request window to get fullscreen
*
* Requests to place the @window in fullscreen or unfullscreen states.
*/
void
gst_vaapi_window_set_fullscreen(GstVaapiWindow *window, gboolean fullscreen)
{
GstVaapiWindowClass *klass;
g_return_if_fail(GST_VAAPI_IS_WINDOW(window));
klass = GST_VAAPI_WINDOW_GET_CLASS(window);
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if (window->priv->is_fullscreen != fullscreen &&
klass->set_fullscreen && klass->set_fullscreen(window, fullscreen)) {
window->priv->is_fullscreen = fullscreen;
window->priv->is_fullscreen_changed = TRUE;
}
}
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/**
* gst_vaapi_window_get_width:
* @window: a #GstVaapiWindow
*
* Retrieves the width of a #GstVaapiWindow.
*
* Return value: the width of the @window, in pixels
*/
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guint
gst_vaapi_window_get_width(GstVaapiWindow *window)
{
g_return_val_if_fail(GST_VAAPI_IS_WINDOW(window), 0);
g_return_val_if_fail(window->priv->is_constructed, 0);
gst_vaapi_window_ensure_size(window);
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return window->priv->width;
}
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/**
* gst_vaapi_window_get_height:
* @window: a #GstVaapiWindow
*
* Retrieves the height of a #GstVaapiWindow
*
* Return value: the height of the @window, in pixels
*/
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guint
gst_vaapi_window_get_height(GstVaapiWindow *window)
{
g_return_val_if_fail(GST_VAAPI_IS_WINDOW(window), 0);
g_return_val_if_fail(window->priv->is_constructed, 0);
gst_vaapi_window_ensure_size(window);
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return window->priv->height;
}
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/**
* gst_vaapi_window_get_size:
* @window: a #GstVaapiWindow
* @pwidth: return location for the width, or %NULL
* @pheight: return location for the height, or %NULL
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*
* Retrieves the dimensions of a #GstVaapiWindow.
*/
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void
gst_vaapi_window_get_size(GstVaapiWindow *window, guint *pwidth, guint *pheight)
{
g_return_if_fail(GST_VAAPI_IS_WINDOW(window));
g_return_if_fail(window->priv->is_constructed);
gst_vaapi_window_ensure_size(window);
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if (pwidth)
*pwidth = window->priv->width;
if (pheight)
*pheight = window->priv->height;
}
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/**
* gst_vaapi_window_set_width:
* @window: a #GstVaapiWindow
* @width: requested new width for the window, in pixels
*
* Resizes the @window to match the specified @width.
*/
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void
gst_vaapi_window_set_width(GstVaapiWindow *window, guint width)
{
g_return_if_fail(GST_VAAPI_IS_WINDOW(window));
gst_vaapi_window_set_size(window, width, window->priv->height);
}
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/**
* gst_vaapi_window_set_height:
* @window: a #GstVaapiWindow
* @height: requested new height for the window, in pixels
*
* Resizes the @window to match the specified @height.
*/
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void
gst_vaapi_window_set_height(GstVaapiWindow *window, guint height)
{
g_return_if_fail(GST_VAAPI_IS_WINDOW(window));
gst_vaapi_window_set_size(window, window->priv->width, height);
}
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/**
* gst_vaapi_window_set_size:
* @window: a #GstVaapiWindow
* @width: requested new width for the window, in pixels
* @height: requested new height for the window, in pixels
*
* Resizes the @window to match the specified @width and @height.
*/
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void
gst_vaapi_window_set_size(GstVaapiWindow *window, guint width, guint height)
{
g_return_if_fail(GST_VAAPI_IS_WINDOW(window));
if (width == window->priv->width && height == window->priv->height)
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return;
window->priv->width = width;
window->priv->height = height;
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if (window->priv->is_constructed)
GST_VAAPI_WINDOW_GET_CLASS(window)->resize(window, width, height);
}
static inline void
get_surface_rect(GstVaapiSurface *surface, GstVaapiRectangle *rect)
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{
guint width, height;
gst_vaapi_surface_get_size(surface, &width, &height);
rect->x = 0;
rect->y = 0;
rect->width = width;
rect->height = height;
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}
static inline void
get_window_rect(GstVaapiWindow *window, GstVaapiRectangle *rect)
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{
guint width, height;
gst_vaapi_window_get_size(window, &width, &height);
rect->x = 0;
rect->y = 0;
rect->width = width;
rect->height = height;
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}
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/**
* gst_vaapi_window_put_surface:
* @window: a #GstVaapiWindow
* @surface: a #GstVaapiSurface
* @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.
* @dst_rect: the sub-rectangle of the destination
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* window into which the surface is rendered. If %NULL, the entire
* window will be used.
* @flags: postprocessing flags. See #GstVaapiSurfaceRenderFlags
*
* Renders the @surface region specified by @src_rect into the @window
* region specified by @dst_rect. The @flags specify how de-interlacing
* (if needed), color space conversion, scaling and other postprocessing
* transformations are performed.
*
* Return value: %TRUE on success
*/
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gboolean
gst_vaapi_window_put_surface(
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GstVaapiWindow *window,
GstVaapiSurface *surface,
const GstVaapiRectangle *src_rect,
const GstVaapiRectangle *dst_rect,
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guint flags
)
{
GstVaapiWindowClass *klass;
GstVaapiRectangle src_rect_default, dst_rect_default;
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g_return_val_if_fail(GST_VAAPI_IS_WINDOW(window), FALSE);
g_return_val_if_fail(window->priv->is_constructed, FALSE);
g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), FALSE);
klass = GST_VAAPI_WINDOW_GET_CLASS(window);
if (!klass->render)
return FALSE;
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if (!src_rect) {
src_rect = &src_rect_default;
get_surface_rect(surface, &src_rect_default);
}
if (!dst_rect) {
dst_rect = &dst_rect_default;
get_window_rect(window, &dst_rect_default);
}
return klass->render(window, surface, src_rect, dst_rect, flags);
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}