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260 lines
6.9 KiB
C
260 lines
6.9 KiB
C
/*
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* gstvaapipixmap.c - Pixmap abstraction
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*
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* Copyright (C) 2013 Intel Corporation
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* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
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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:gstvaapipixmap
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* @short_description: Pixmap abstraction
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*/
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#include "sysdeps.h"
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#include "gstvaapipixmap.h"
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#include "gstvaapipixmap_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_pixmap_ref
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#undef gst_vaapi_pixmap_unref
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#undef gst_vaapi_pixmap_replace
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static inline GstVaapiPixmap *
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gst_vaapi_pixmap_new_internal(const GstVaapiPixmapClass *pixmap_class,
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GstVaapiDisplay *display)
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{
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g_assert(pixmap_class->create != NULL);
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g_assert(pixmap_class->render != NULL);
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return gst_vaapi_object_new(GST_VAAPI_OBJECT_CLASS(pixmap_class), display);
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}
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GstVaapiPixmap *
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gst_vaapi_pixmap_new(const GstVaapiPixmapClass *pixmap_class,
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GstVaapiDisplay *display, GstVideoFormat format, guint width, guint height)
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{
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GstVaapiPixmap *pixmap;
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g_return_val_if_fail(format != GST_VIDEO_FORMAT_UNKNOWN &&
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format != GST_VIDEO_FORMAT_ENCODED, NULL);
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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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pixmap = gst_vaapi_pixmap_new_internal(pixmap_class, display);
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if (!pixmap)
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return NULL;
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pixmap->format = format;
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pixmap->width = width;
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pixmap->height = height;
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if (!pixmap_class->create(pixmap))
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goto error;
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return pixmap;
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error:
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gst_vaapi_pixmap_unref_internal(pixmap);
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return NULL;
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}
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GstVaapiPixmap *
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gst_vaapi_pixmap_new_from_native(const GstVaapiPixmapClass *pixmap_class,
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GstVaapiDisplay *display, gpointer native_pixmap)
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{
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GstVaapiPixmap *pixmap;
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pixmap = gst_vaapi_pixmap_new_internal(pixmap_class, display);
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if (!pixmap)
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return NULL;
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GST_VAAPI_OBJECT_ID(pixmap) = GPOINTER_TO_SIZE(native_pixmap);
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pixmap->use_foreign_pixmap = TRUE;
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if (!pixmap_class->create(pixmap))
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goto error;
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return pixmap;
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error:
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gst_vaapi_pixmap_unref_internal(pixmap);
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return NULL;
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}
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/**
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* gst_vaapi_pixmap_ref:
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* @pixmap: a #GstVaapiPixmap
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*
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* Atomically increases the reference count of the given @pixmap by one.
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*
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* Returns: The same @pixmap argument
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*/
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GstVaapiPixmap *
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gst_vaapi_pixmap_ref(GstVaapiPixmap *pixmap)
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{
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return gst_vaapi_pixmap_ref_internal(pixmap);
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}
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/**
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* gst_vaapi_pixmap_unref:
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* @pixmap: a #GstVaapiPixmap
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*
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* Atomically decreases the reference count of the @pixmap by one. If
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* the reference count reaches zero, the pixmap will be free'd.
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*/
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void
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gst_vaapi_pixmap_unref(GstVaapiPixmap *pixmap)
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{
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gst_vaapi_pixmap_unref_internal(pixmap);
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}
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/**
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* gst_vaapi_pixmap_replace:
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* @old_pixmap_ptr: a pointer to a #GstVaapiPixmap
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* @new_pixmap: a #GstVaapiPixmap
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*
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* Atomically replaces the pixmap pixmap held in @old_pixmap_ptr with
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* @new_pixmap. This means that @old_pixmap_ptr shall reference a
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* valid pixmap. However, @new_pixmap can be NULL.
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*/
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void
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gst_vaapi_pixmap_replace(GstVaapiPixmap **old_pixmap_ptr,
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GstVaapiPixmap *new_pixmap)
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{
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gst_vaapi_pixmap_replace_internal(old_pixmap_ptr, new_pixmap);
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}
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/**
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* gst_vaapi_pixmap_get_display:
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* @pixmap: a #GstVaapiPixmap
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*
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* Returns the #GstVaapiDisplay this @pixmap 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_pixmap_get_display(GstVaapiPixmap *pixmap)
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{
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g_return_val_if_fail(pixmap != NULL, NULL);
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return GST_VAAPI_OBJECT_DISPLAY(pixmap);
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}
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/**
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* gst_vaapi_pixmap_get_format:
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* @pixmap: a #GstVaapiPixmap
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*
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* Retrieves the format of a #GstVaapiPixmap.
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*
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* Return value: the format of the @pixmap
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*/
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GstVideoFormat
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gst_vaapi_pixmap_get_format(GstVaapiPixmap *pixmap)
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{
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g_return_val_if_fail(pixmap != NULL, GST_VIDEO_FORMAT_UNKNOWN);
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return GST_VAAPI_PIXMAP_FORMAT(pixmap);
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}
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/**
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* gst_vaapi_pixmap_get_width:
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* @pixmap: a #GstVaapiPixmap
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*
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* Retrieves the width of a #GstVaapiPixmap.
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*
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* Return value: the width of the @pixmap, in pixels
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*/
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guint
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gst_vaapi_pixmap_get_width(GstVaapiPixmap *pixmap)
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{
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g_return_val_if_fail(pixmap != NULL, 0);
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return GST_VAAPI_PIXMAP_WIDTH(pixmap);
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}
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/**
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* gst_vaapi_pixmap_get_height:
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* @pixmap: a #GstVaapiPixmap
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*
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* Retrieves the height of a #GstVaapiPixmap
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*
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* Return value: the height of the @pixmap, in pixels
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*/
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guint
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gst_vaapi_pixmap_get_height(GstVaapiPixmap *pixmap)
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{
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g_return_val_if_fail(pixmap != NULL, 0);
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return GST_VAAPI_PIXMAP_HEIGHT(pixmap);
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}
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/**
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* gst_vaapi_pixmap_get_size:
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* @pixmap: a #GstVaapiPixmap
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* @width: return location for the width, or %NULL
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* @height: return location for the height, or %NULL
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*
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* Retrieves the dimensions of a #GstVaapiPixmap.
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*/
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void
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gst_vaapi_pixmap_get_size(GstVaapiPixmap *pixmap, guint *width, guint *height)
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{
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g_return_if_fail(pixmap != NULL);
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if (width)
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*width = GST_VAAPI_PIXMAP_WIDTH(pixmap);
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if (height)
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*height = GST_VAAPI_PIXMAP_HEIGHT(pixmap);
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}
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/**
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* gst_vaapi_pixmap_put_surface:
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* @pixmap: a #GstVaapiPixmap
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* @surface: a #GstVaapiSurface
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* @crop_rect: the video cropping rectangle, or %NULL if the entire
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* surface is to be used.
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* @flags: postprocessing flags. See #GstVaapiSurfaceRenderFlags
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*
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* Renders the whole @surface, or a cropped region defined with
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* @crop_rect, into the @pixmap, while scaling to fit the target
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* pixmap. The @flags specify how de-interlacing (if needed), color
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* space conversion, scaling and other postprocessing transformations
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* 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_pixmap_put_surface(GstVaapiPixmap *pixmap, GstVaapiSurface *surface,
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const GstVaapiRectangle *crop_rect, guint flags)
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{
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GstVaapiRectangle src_rect;
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g_return_val_if_fail(pixmap != NULL, FALSE);
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g_return_val_if_fail(surface != NULL, FALSE);
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if (!crop_rect) {
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src_rect.x = 0;
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src_rect.y = 0;
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src_rect.width = GST_VAAPI_SURFACE_WIDTH(surface);
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src_rect.height = GST_VAAPI_SURFACE_HEIGHT(surface);
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crop_rect = &src_rect;
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}
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return GST_VAAPI_PIXMAP_GET_CLASS(pixmap)->render(pixmap, surface,
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crop_rect, flags);
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}
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