+++ /dev/null
-/* Libart_LGPL - library of basic graphic primitives
- * Copyright (C) 1998 Raph Levien
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include "art_misc.h"
-#include "art_pixbuf.h"
-#include <string.h>
-
-/**
- * art_pixbuf_new_rgb_dnotify: Create a new RGB #ArtPixBuf with explicit destroy notification.
- * @pixels: A buffer containing the actual pixel data.
- * @width: The width of the pixbuf.
- * @height: The height of the pixbuf.
- * @rowstride: The rowstride of the pixbuf.
- * @dfunc_data: The private data passed to @dfunc.
- * @dfunc: The destroy notification function.
- *
- * Creates a generic data structure for holding a buffer of RGB
- * pixels. It is possible to think of an #ArtPixBuf as a
- * virtualization over specific pixel buffer formats.
- *
- * @dfunc is called with @dfunc_data and @pixels as arguments when the
- * #ArtPixBuf is destroyed. Using a destroy notification function
- * allows a wide range of memory management disciplines for the pixel
- * memory. A NULL value for @dfunc is also allowed and means that no
- * special action will be taken on destruction.
- *
- * Return value: The newly created #ArtPixBuf.
- **/
-ArtPixBuf *
-art_pixbuf_new_rgb_dnotify (art_u8 *pixels, int width, int height, int rowstride,
- void *dfunc_data, ArtDestroyNotify dfunc)
-{
- ArtPixBuf *pixbuf;
-
- pixbuf = art_new (ArtPixBuf, 1);
-
- pixbuf->format = ART_PIX_RGB;
- pixbuf->n_channels = 3;
- pixbuf->has_alpha = 0;
- pixbuf->bits_per_sample = 8;
-
- pixbuf->pixels = (art_u8 *) pixels;
- pixbuf->width = width;
- pixbuf->height = height;
- pixbuf->rowstride = rowstride;
- pixbuf->destroy_data = dfunc_data;
- pixbuf->destroy = dfunc;
-
- return pixbuf;
-}
-
-/**
- * art_pixbuf_new_rgba_dnotify: Create a new RGBA #ArtPixBuf with explicit destroy notification.
- * @pixels: A buffer containing the actual pixel data.
- * @width: The width of the pixbuf.
- * @height: The height of the pixbuf.
- * @rowstride: The rowstride of the pixbuf.
- * @dfunc_data: The private data passed to @dfunc.
- * @dfunc: The destroy notification function.
- *
- * Creates a generic data structure for holding a buffer of RGBA
- * pixels. It is possible to think of an #ArtPixBuf as a
- * virtualization over specific pixel buffer formats.
- *
- * @dfunc is called with @dfunc_data and @pixels as arguments when the
- * #ArtPixBuf is destroyed. Using a destroy notification function
- * allows a wide range of memory management disciplines for the pixel
- * memory. A NULL value for @dfunc is also allowed and means that no
- * special action will be taken on destruction.
- *
- * Return value: The newly created #ArtPixBuf.
- **/
-ArtPixBuf *
-art_pixbuf_new_rgba_dnotify (art_u8 *pixels, int width, int height, int rowstride,
- void *dfunc_data, ArtDestroyNotify dfunc)
-{
- ArtPixBuf *pixbuf;
-
- pixbuf = art_new (ArtPixBuf, 1);
-
- pixbuf->format = ART_PIX_RGB;
- pixbuf->n_channels = 4;
- pixbuf->has_alpha = 1;
- pixbuf->bits_per_sample = 8;
-
- pixbuf->pixels = (art_u8 *) pixels;
- pixbuf->width = width;
- pixbuf->height = height;
- pixbuf->rowstride = rowstride;
- pixbuf->destroy_data = dfunc_data;
- pixbuf->destroy = dfunc;
-
- return pixbuf;
-}
-
-/**
- * art_pixbuf_new_const_rgb: Create a new RGB #ArtPixBuf with constant pixel data.
- * @pixels: A buffer containing the actual pixel data.
- * @width: The width of the pixbuf.
- * @height: The height of the pixbuf.
- * @rowstride: The rowstride of the pixbuf.
- *
- * Creates a generic data structure for holding a buffer of RGB
- * pixels. It is possible to think of an #ArtPixBuf as a
- * virtualization over specific pixel buffer formats.
- *
- * No action is taken when the #ArtPixBuf is destroyed. Thus, this
- * function is useful when the pixel data is constant or statically
- * allocated.
- *
- * Return value: The newly created #ArtPixBuf.
- **/
-ArtPixBuf *
-art_pixbuf_new_const_rgb (const art_u8 *pixels, int width, int height, int rowstride)
-{
- return art_pixbuf_new_rgb_dnotify ((art_u8 *) pixels, width, height, rowstride, NULL, NULL);
-}
-
-/**
- * art_pixbuf_new_const_rgba: Create a new RGBA #ArtPixBuf with constant pixel data.
- * @pixels: A buffer containing the actual pixel data.
- * @width: The width of the pixbuf.
- * @height: The height of the pixbuf.
- * @rowstride: The rowstride of the pixbuf.
- *
- * Creates a generic data structure for holding a buffer of RGBA
- * pixels. It is possible to think of an #ArtPixBuf as a
- * virtualization over specific pixel buffer formats.
- *
- * No action is taken when the #ArtPixBuf is destroyed. Thus, this
- * function is suitable when the pixel data is constant or statically
- * allocated.
- *
- * Return value: The newly created #ArtPixBuf.
- **/
-ArtPixBuf *
-art_pixbuf_new_const_rgba (const art_u8 *pixels, int width, int height, int rowstride)
-{
- return art_pixbuf_new_rgba_dnotify ((art_u8 *) pixels, width, height, rowstride, NULL, NULL);
-}
-
-static void
-art_pixel_destroy (void *func_data, void *data)
-{
- art_free (data);
-}
-
-/**
- * art_pixbuf_new_rgb: Create a new RGB #ArtPixBuf.
- * @pixels: A buffer containing the actual pixel data.
- * @width: The width of the pixbuf.
- * @height: The height of the pixbuf.
- * @rowstride: The rowstride of the pixbuf.
- *
- * Creates a generic data structure for holding a buffer of RGB
- * pixels. It is possible to think of an #ArtPixBuf as a
- * virtualization over specific pixel buffer formats.
- *
- * The @pixels buffer is freed with art_free() when the #ArtPixBuf is
- * destroyed. Thus, this function is suitable when the pixel data is
- * allocated with art_alloc().
- *
- * Return value: The newly created #ArtPixBuf.
- **/
-ArtPixBuf *
-art_pixbuf_new_rgb (art_u8 *pixels, int width, int height, int rowstride)
-{
- return art_pixbuf_new_rgb_dnotify (pixels, width, height, rowstride, NULL, art_pixel_destroy);
-}
-
-/**
- * art_pixbuf_new_rgba: Create a new RGBA #ArtPixBuf.
- * @pixels: A buffer containing the actual pixel data.
- * @width: The width of the pixbuf.
- * @height: The height of the pixbuf.
- * @rowstride: The rowstride of the pixbuf.
- *
- * Creates a generic data structure for holding a buffer of RGBA
- * pixels. It is possible to think of an #ArtPixBuf as a
- * virtualization over specific pixel buffer formats.
- *
- * The @pixels buffer is freed with art_free() when the #ArtPixBuf is
- * destroyed. Thus, this function is suitable when the pixel data is
- * allocated with art_alloc().
- *
- * Return value: The newly created #ArtPixBuf.
- **/
-ArtPixBuf *
-art_pixbuf_new_rgba (art_u8 *pixels, int width, int height, int rowstride)
-{
- return art_pixbuf_new_rgba_dnotify (pixels, width, height, rowstride, NULL, art_pixel_destroy);
-}
-
-/**
- * art_pixbuf_free: Destroy an #ArtPixBuf.
- * @pixbuf: The #ArtPixBuf to be destroyed.
- *
- * Destroys the #ArtPixBuf, calling the destroy notification function
- * (if non-NULL) so that the memory for the pixel buffer can be
- * properly reclaimed.
- **/
-void
-art_pixbuf_free (ArtPixBuf *pixbuf)
-{
- ArtDestroyNotify destroy = pixbuf->destroy;
- void *destroy_data = pixbuf->destroy_data;
- art_u8 *pixels = pixbuf->pixels;
-
- pixbuf->pixels = NULL;
- pixbuf->destroy = NULL;
- pixbuf->destroy_data = NULL;
-
- if (destroy)
- destroy (destroy_data, pixels);
-
- art_free (pixbuf);
-}
-
-/**
- * art_pixbuf_free_shallow:
- * @pixbuf: The #ArtPixBuf to be destroyed.
- *
- * Destroys the #ArtPixBuf without calling the destroy notification function.
- *
- * This function is deprecated. Use the _dnotify variants for
- * allocation instead.
- **/
-void
-art_pixbuf_free_shallow (ArtPixBuf *pixbuf)
-{
- art_free (pixbuf);
-}
-
-/**
- * art_pixbuf_duplicate: Duplicate a pixbuf.
- * @pixbuf: The #ArtPixBuf to duplicate.
- *
- * Duplicates a pixbuf, including duplicating the buffer.
- *
- * Return value: The duplicated pixbuf.
- **/
-ArtPixBuf *
-art_pixbuf_duplicate (const ArtPixBuf *pixbuf)
-{
- ArtPixBuf *result;
- int size;
-
- result = art_new (ArtPixBuf, 1);
-
- result->format = pixbuf->format;
- result->n_channels = pixbuf->n_channels;
- result->has_alpha = pixbuf->has_alpha;
- result->bits_per_sample = pixbuf->bits_per_sample;
-
- size = (pixbuf->height - 1) * pixbuf->rowstride +
- pixbuf->width * ((pixbuf->n_channels * pixbuf->bits_per_sample + 7) >> 3);
- result->pixels = art_alloc (size);
- memcpy (result->pixels, pixbuf->pixels, size);
-
- result->width = pixbuf->width;
- result->height = pixbuf->height;
- result->rowstride = pixbuf->rowstride;
- result->destroy_data = NULL;
- result->destroy = art_pixel_destroy;
-
- return result;
-}
projects / rrdtool.git / blobdiff