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

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/*
* gstvaapiwindow.c - VA window abstraction
*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
* 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
* 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.
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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
* 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
* License along with this library; 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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/**
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* SECTION:gstvaapiwindow
* @short_description: VA window abstraction
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*/
#include "sysdeps.h"
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#include "gstvaapiwindow.h"
#include "gstvaapiwindow_priv.h"
#include "gstvaapisurface_priv.h"
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#define DEBUG 1
#include "gstvaapidebug.h"
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/* Ensure those symbols are actually defined in the resulting libraries */
#undef gst_vaapi_window_ref
#undef gst_vaapi_window_unref
#undef gst_vaapi_window_replace
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static void
gst_vaapi_window_ensure_size(GstVaapiWindow *window)
{
const GstVaapiWindowClass * const klass =
GST_VAAPI_WINDOW_GET_CLASS(window);
if (!window->check_geometry)
return;
if (klass->get_geometry)
klass->get_geometry(window, NULL, NULL,
&window->width, &window->height);
window->check_geometry = FALSE;
window->is_fullscreen = (window->width == window->display_width &&
window->height == window->display_height);
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}
static gboolean
gst_vaapi_window_create(GstVaapiWindow *window, guint width, guint height)
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{
gst_vaapi_display_get_size(
GST_VAAPI_OBJECT_DISPLAY(window),
&window->display_width,
&window->display_height
);
if (!GST_VAAPI_WINDOW_GET_CLASS(window)->create(window, &width, &height))
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return FALSE;
if (width != window->width || height != window->height) {
GST_DEBUG("backend resized window to %ux%u", width, height);
window->width = width;
window->height = height;
}
return TRUE;
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}
GstVaapiWindow *
gst_vaapi_window_new(const GstVaapiWindowClass *window_class,
GstVaapiDisplay *display, guint width, guint height)
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{
GstVaapiWindow *window;
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g_return_val_if_fail(width > 0, NULL);
g_return_val_if_fail(height > 0, NULL);
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window = gst_vaapi_object_new(GST_VAAPI_OBJECT_CLASS(window_class),
display);
if (!window)
return NULL;
GST_VAAPI_OBJECT_ID(window) = 0;
if (!gst_vaapi_window_create(window, width, height))
goto error;
return window;
error:
gst_vaapi_window_unref_internal(window);
return NULL;
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}
GstVaapiWindow *
gst_vaapi_window_new_from_native(const GstVaapiWindowClass *window_class,
GstVaapiDisplay *display, gpointer native_window)
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{
GstVaapiWindow *window;
window = gst_vaapi_object_new(GST_VAAPI_OBJECT_CLASS(window_class),
display);
if (!window)
return NULL;
GST_VAAPI_OBJECT_ID(window) = GPOINTER_TO_SIZE(native_window);
window->use_foreign_window = TRUE;
if (!gst_vaapi_window_create(window, 0, 0))
goto error;
return window;
error:
gst_vaapi_window_unref_internal(window);
return NULL;
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}
/**
* gst_vaapi_window_ref:
* @window: a #GstVaapiWindow
*
* Atomically increases the reference count of the given @window by one.
*
* Returns: The same @window argument
*/
GstVaapiWindow *
gst_vaapi_window_ref(GstVaapiWindow *window)
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{
return gst_vaapi_window_ref_internal(window);
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}
/**
* gst_vaapi_window_unref:
* @window: a #GstVaapiWindow
*
* Atomically decreases the reference count of the @window by one. If
* the reference count reaches zero, the window will be free'd.
*/
void
gst_vaapi_window_unref(GstVaapiWindow *window)
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{
gst_vaapi_window_unref_internal(window);
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}
/**
* gst_vaapi_window_replace:
* @old_window_ptr: a pointer to a #GstVaapiWindow
* @new_window: a #GstVaapiWindow
*
* Atomically replaces the window window held in @old_window_ptr with
* @new_window. This means that @old_window_ptr shall reference a
* valid window. However, @new_window can be NULL.
*/
void
gst_vaapi_window_replace(GstVaapiWindow **old_window_ptr,
GstVaapiWindow *new_window)
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{
gst_vaapi_window_replace_internal(old_window_ptr, new_window);
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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(window != NULL, 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(window != NULL);
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GST_VAAPI_WINDOW_GET_CLASS(window)->show(window);
window->check_geometry = TRUE;
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}
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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(window != NULL);
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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(window != NULL, FALSE);
gst_vaapi_window_ensure_size(window);
return window->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)
{
const GstVaapiWindowClass *klass;
g_return_if_fail(window != NULL);
klass = GST_VAAPI_WINDOW_GET_CLASS(window);
if (window->is_fullscreen != fullscreen &&
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klass->set_fullscreen && klass->set_fullscreen(window, fullscreen)) {
window->is_fullscreen = fullscreen;
window->check_geometry = 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(window != NULL, 0);
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gst_vaapi_window_ensure_size(window);
return window->width;
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}
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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(window != NULL, 0);
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gst_vaapi_window_ensure_size(window);
return window->height;
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}
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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(window != NULL);
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gst_vaapi_window_ensure_size(window);
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if (pwidth)
*pwidth = window->width;
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if (pheight)
*pheight = window->height;
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}
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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(window != NULL);
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gst_vaapi_window_set_size(window, width, window->height);
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}
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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(window != NULL);
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gst_vaapi_window_set_size(window, window->width, height);
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}
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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(window != NULL);
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if (width == window->width && height == window->height)
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return;
if (!GST_VAAPI_WINDOW_GET_CLASS(window)->resize(window, width, height))
return;
window->width = width;
window->height = height;
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}
static inline void
get_surface_rect(GstVaapiSurface *surface, GstVaapiRectangle *rect)
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{
rect->x = 0;
rect->y = 0;
rect->width = GST_VAAPI_SURFACE_WIDTH(surface);
rect->height = GST_VAAPI_SURFACE_HEIGHT(surface);
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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
)
{
const GstVaapiWindowClass *klass;
GstVaapiRectangle src_rect_default, dst_rect_default;
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g_return_val_if_fail(window != NULL, FALSE);
g_return_val_if_fail(surface != NULL, FALSE);
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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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}
static inline void
get_pixmap_rect(GstVaapiPixmap *pixmap, GstVaapiRectangle *rect)
{
guint width, height;
gst_vaapi_pixmap_get_size(pixmap, &width, &height);
rect->x = 0;
rect->y = 0;
rect->width = width;
rect->height = height;
}
/**
* gst_vaapi_window_put_pixmap:
* @window: a #GstVaapiWindow
* @pixmap: a #GstVaapiPixmap
* @src_rect: the sub-rectangle of the source pixmap to
* extract and process. If %NULL, the entire pixmap will be used.
* @dst_rect: the sub-rectangle of the destination
* window into which the pixmap is rendered. If %NULL, the entire
* window will be used.
*
* Renders the @pixmap region specified by @src_rect into the @window
* region specified by @dst_rect.
*
* Return value: %TRUE on success
*/
gboolean
gst_vaapi_window_put_pixmap(
GstVaapiWindow *window,
GstVaapiPixmap *pixmap,
const GstVaapiRectangle *src_rect,
const GstVaapiRectangle *dst_rect
)
{
const GstVaapiWindowClass *klass;
GstVaapiRectangle src_rect_default, dst_rect_default;
g_return_val_if_fail(window != NULL, FALSE);
g_return_val_if_fail(pixmap != NULL, FALSE);
klass = GST_VAAPI_WINDOW_GET_CLASS(window);
if (!klass->render_pixmap)
return FALSE;
if (!src_rect) {
src_rect = &src_rect_default;
get_pixmap_rect(pixmap, &src_rect_default);
}
if (!dst_rect) {
dst_rect = &dst_rect_default;
get_window_rect(window, &dst_rect_default);
}
return klass->render_pixmap(window, pixmap, src_rect, dst_rect);
}