From ed05aa87f8cdd8c53b37d68d89d295848edf2534 Mon Sep 17 00:00:00 2001 From: James Bursa Date: Sat, 25 Dec 2004 11:37:35 +0000 Subject: [project @ 2004-12-25 11:37:35 by bursa] Fix line endings. svn path=/import/netsurf/; revision=1409 --- riscos/bitmap.c | 380 ++++++++++++++++++++++++++++---------------------------- 1 file changed, 190 insertions(+), 190 deletions(-) (limited to 'riscos') diff --git a/riscos/bitmap.c b/riscos/bitmap.c index 397668e6d..f30f43957 100644 --- a/riscos/bitmap.c +++ b/riscos/bitmap.c @@ -1,190 +1,190 @@ -/* - * This file is part of NetSurf, http://netsurf.sourceforge.net/ - * Licensed under the GNU General Public License, - * http://www.opensource.org/licenses/gpl-license - * Copyright 2004 James Bursa - */ - -/** \file - * Generic bitmap handling (RISC OS implementation). - * - * This implements the interface given by desktop/bitmap.h using RISC OS - * sprites. - */ - -#include -#include -#include -#include "oslib/osspriteop.h" -#include "netsurf/content/content.h" -#include "netsurf/image/bitmap.h" -#include "netsurf/riscos/bitmap.h" -#include "netsurf/riscos/image.h" -#include "netsurf/utils/log.h" -#include "netsurf/utils/utils.h" - - -/** - * Create a bitmap. - * - * \param width width of image in pixels - * \param height width of image in pixels - * \return an opaque struct bitmap, or NULL on memory exhaustion - */ - -struct bitmap *bitmap_create(int width, int height) -{ - unsigned int area_size; - struct bitmap *bitmap; - osspriteop_area *sprite_area; - osspriteop_header *sprite; - - if (width == 0 || height == 0) - return NULL; - - area_size = 16 + 44 + width * height * 4; - bitmap = calloc(sizeof(struct bitmap) + area_size, 1); - if (!bitmap) - return NULL; - - bitmap->width = width; - bitmap->height = height; - bitmap->opaque = false; - - /* area control block */ - sprite_area = &bitmap->sprite_area; - sprite_area->size = area_size; - sprite_area->sprite_count = 1; - sprite_area->first = 16; - sprite_area->used = area_size; - - /* sprite control block */ - sprite = (osspriteop_header *) (sprite_area + 1); - sprite->size = area_size - 16; -/* memset(sprite->name, 0x00, 12); */ - strncpy(sprite->name, "bitmap", 12); - sprite->width = width - 1; - sprite->height = height - 1; - sprite->left_bit = 0; - sprite->right_bit = 31; - sprite->image = sprite->mask = 44; - sprite->mode = (os_mode) 0x301680b5; - - return bitmap; -} - - -/** - * Sets whether a bitmap should be plotted opaque - * - * \param bitmap a bitmap, as returned by bitmap_create() - * \param opaque whether the bitmap should be plotted opaque - */ -void bitmap_set_opaque(struct bitmap *bitmap, bool opaque) -{ - assert(bitmap); - bitmap->opaque = opaque; -} - - -/** - * Tests whether a bitmap has an opaque alpha channel - * - * \param bitmap a bitmap, as returned by bitmap_create() - * \return whether the bitmap is opaque - */ -bool bitmap_test_opaque(struct bitmap *bitmap) -{ - assert(bitmap); - char *sprite = bitmap_get_buffer(bitmap); - unsigned int width = bitmap_get_rowstride(bitmap); - osspriteop_header *sprite_header = - (osspriteop_header *) (&(bitmap->sprite_area) + 1); - unsigned int height = (sprite_header->height + 1); - unsigned int size = width * height; - for (unsigned int i = 3; i < size; i += 4) - if (sprite[i] != 0xff) - return false; - return true; -} - - -/** - * Gets whether a bitmap should be plotted opaque - * - * \param bitmap a bitmap, as returned by bitmap_create() - */ -bool bitmap_get_opaque(struct bitmap *bitmap) -{ - assert(bitmap); - return (bitmap->opaque); -} - - -/** - * Return a pointer to the pixel data in a bitmap. - * - * \param bitmap a bitmap, as returned by bitmap_create() - * \return pointer to the pixel buffer - * - * The pixel data is packed as BITMAP_FORMAT, possibly with padding at the end - * of rows. The width of a row in bytes is given by bitmap_get_rowstride(). - */ - -char *bitmap_get_buffer(struct bitmap *bitmap) -{ - assert(bitmap); - return ((char *) (&(bitmap->sprite_area))) + 16 + 44; -} - - -/** - * Find the width of a pixel row in bytes. - * - * \param bitmap a bitmap, as returned by bitmap_create() - * \return width of a pixel row in the bitmap - */ - -size_t bitmap_get_rowstride(struct bitmap *bitmap) -{ - osspriteop_header *sprite; - assert(bitmap); - sprite = (osspriteop_header *) (&(bitmap->sprite_area) + 1); - return (sprite->width + 1) * 4; -} - - -/** - * Free a bitmap. - * - * \param bitmap a bitmap, as returned by bitmap_create() - */ - -void bitmap_destroy(struct bitmap *bitmap) -{ - assert(bitmap); - free(bitmap); -} - - -/** - * Save a bitmap in the platform's native format. - * - * \param bitmap a bitmap, as returned by bitmap_create() - * \param path pathname for file - * \return true on success, false on error and error reported - */ - -bool bitmap_save(struct bitmap *bitmap, const char *path) -{ - os_error *error; - error = xosspriteop_save_sprite_file(osspriteop_USER_AREA, - &(bitmap->sprite_area), path); - if (error) { - LOG(("xosspriteop_save_sprite_file: 0x%x: %s", - error->errnum, error->errmess)); - warn_user("SaveError", error->errmess); - return false; - } - return true; -} +/* + * This file is part of NetSurf, http://netsurf.sourceforge.net/ + * Licensed under the GNU General Public License, + * http://www.opensource.org/licenses/gpl-license + * Copyright 2004 James Bursa + */ + +/** \file + * Generic bitmap handling (RISC OS implementation). + * + * This implements the interface given by desktop/bitmap.h using RISC OS + * sprites. + */ + +#include +#include +#include +#include "oslib/osspriteop.h" +#include "netsurf/content/content.h" +#include "netsurf/image/bitmap.h" +#include "netsurf/riscos/bitmap.h" +#include "netsurf/riscos/image.h" +#include "netsurf/utils/log.h" +#include "netsurf/utils/utils.h" + + +/** + * Create a bitmap. + * + * \param width width of image in pixels + * \param height width of image in pixels + * \return an opaque struct bitmap, or NULL on memory exhaustion + */ + +struct bitmap *bitmap_create(int width, int height) +{ + unsigned int area_size; + struct bitmap *bitmap; + osspriteop_area *sprite_area; + osspriteop_header *sprite; + + if (width == 0 || height == 0) + return NULL; + + area_size = 16 + 44 + width * height * 4; + bitmap = calloc(sizeof(struct bitmap) + area_size, 1); + if (!bitmap) + return NULL; + + bitmap->width = width; + bitmap->height = height; + bitmap->opaque = false; + + /* area control block */ + sprite_area = &bitmap->sprite_area; + sprite_area->size = area_size; + sprite_area->sprite_count = 1; + sprite_area->first = 16; + sprite_area->used = area_size; + + /* sprite control block */ + sprite = (osspriteop_header *) (sprite_area + 1); + sprite->size = area_size - 16; +/* memset(sprite->name, 0x00, 12); */ + strncpy(sprite->name, "bitmap", 12); + sprite->width = width - 1; + sprite->height = height - 1; + sprite->left_bit = 0; + sprite->right_bit = 31; + sprite->image = sprite->mask = 44; + sprite->mode = (os_mode) 0x301680b5; + + return bitmap; +} + + +/** + * Sets whether a bitmap should be plotted opaque + * + * \param bitmap a bitmap, as returned by bitmap_create() + * \param opaque whether the bitmap should be plotted opaque + */ +void bitmap_set_opaque(struct bitmap *bitmap, bool opaque) +{ + assert(bitmap); + bitmap->opaque = opaque; +} + + +/** + * Tests whether a bitmap has an opaque alpha channel + * + * \param bitmap a bitmap, as returned by bitmap_create() + * \return whether the bitmap is opaque + */ +bool bitmap_test_opaque(struct bitmap *bitmap) +{ + assert(bitmap); + char *sprite = bitmap_get_buffer(bitmap); + unsigned int width = bitmap_get_rowstride(bitmap); + osspriteop_header *sprite_header = + (osspriteop_header *) (&(bitmap->sprite_area) + 1); + unsigned int height = (sprite_header->height + 1); + unsigned int size = width * height; + for (unsigned int i = 3; i < size; i += 4) + if (sprite[i] != 0xff) + return false; + return true; +} + + +/** + * Gets whether a bitmap should be plotted opaque + * + * \param bitmap a bitmap, as returned by bitmap_create() + */ +bool bitmap_get_opaque(struct bitmap *bitmap) +{ + assert(bitmap); + return (bitmap->opaque); +} + + +/** + * Return a pointer to the pixel data in a bitmap. + * + * \param bitmap a bitmap, as returned by bitmap_create() + * \return pointer to the pixel buffer + * + * The pixel data is packed as BITMAP_FORMAT, possibly with padding at the end + * of rows. The width of a row in bytes is given by bitmap_get_rowstride(). + */ + +char *bitmap_get_buffer(struct bitmap *bitmap) +{ + assert(bitmap); + return ((char *) (&(bitmap->sprite_area))) + 16 + 44; +} + + +/** + * Find the width of a pixel row in bytes. + * + * \param bitmap a bitmap, as returned by bitmap_create() + * \return width of a pixel row in the bitmap + */ + +size_t bitmap_get_rowstride(struct bitmap *bitmap) +{ + osspriteop_header *sprite; + assert(bitmap); + sprite = (osspriteop_header *) (&(bitmap->sprite_area) + 1); + return (sprite->width + 1) * 4; +} + + +/** + * Free a bitmap. + * + * \param bitmap a bitmap, as returned by bitmap_create() + */ + +void bitmap_destroy(struct bitmap *bitmap) +{ + assert(bitmap); + free(bitmap); +} + + +/** + * Save a bitmap in the platform's native format. + * + * \param bitmap a bitmap, as returned by bitmap_create() + * \param path pathname for file + * \return true on success, false on error and error reported + */ + +bool bitmap_save(struct bitmap *bitmap, const char *path) +{ + os_error *error; + error = xosspriteop_save_sprite_file(osspriteop_USER_AREA, + &(bitmap->sprite_area), path); + if (error) { + LOG(("xosspriteop_save_sprite_file: 0x%x: %s", + error->errnum, error->errmess)); + warn_user("SaveError", error->errmess); + return false; + } + return true; +} -- cgit v1.2.3