/* * Copyright 2008 James Shaw * * This file is part of NetSurf, http://www.netsurf-browser.org/ * * NetSurf 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; version 2 of the License. * * NetSurf 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, see . */ /** \file * Content for image/x-riscos-sprite (librosprite implementation). * */ #include #include #include #include #include "utils/config.h" #include "content/content_protected.h" #include "desktop/plotters.h" #include "image/bitmap.h" #include "image/nssprite.h" #include "utils/log.h" #include "utils/messages.h" #include "utils/talloc.h" #include "utils/utils.h" typedef struct nssprite_content { struct content base; struct bitmap *bitmap; /**< Created NetSurf bitmap */ struct rosprite_area* sprite_area; } nssprite_content; #define ERRCHK(x) do { \ rosprite_error err = x; \ if (err == ROSPRITE_EOF) { \ LOG(("Got ROSPRITE_EOF when loading sprite file")); \ return false; \ } else if (err == ROSPRITE_BADMODE) { \ LOG(("Got ROSPRITE_BADMODE when loading sprite file")); \ return false; \ } else if (err == ROSPRITE_OK) { \ } else { \ return false; \ } \ } while(0) static nserror nssprite_create(const content_handler *handler, lwc_string *imime_type, const http_parameter *params, llcache_handle *llcache, const char *fallback_charset, bool quirks, struct content **c) { nssprite_content *sprite; nserror error; sprite = talloc_zero(0, nssprite_content); if (sprite == NULL) return NSERROR_NOMEM; error = content__init(&sprite->base, handler, imime_type, params, llcache, fallback_charset, quirks); if (error != NSERROR_OK) { talloc_free(sprite); return error; } *c = (struct content *) sprite; return NSERROR_OK; } /** * Convert a CONTENT_SPRITE for display. * * No conversion is necessary. We merely read the sprite dimensions. */ static bool nssprite_convert(struct content *c) { nssprite_content *nssprite = (nssprite_content *) c; union content_msg_data msg_data; struct rosprite_mem_context* ctx; const char *data; unsigned long size; data = content__get_source_data(c, &size); ERRCHK(rosprite_create_mem_context((uint8_t *) data, size, &ctx)); struct rosprite_area* sprite_area; ERRCHK(rosprite_load(rosprite_mem_reader, ctx, &sprite_area)); rosprite_destroy_mem_context(ctx); nssprite->sprite_area = sprite_area; assert(sprite_area->sprite_count > 0); struct rosprite* sprite = sprite_area->sprites[0]; nssprite->bitmap = bitmap_create(sprite->width, sprite->height, BITMAP_NEW); if (!nssprite->bitmap) { msg_data.error = messages_get("NoMemory"); content_broadcast(c, CONTENT_MSG_ERROR, msg_data); return false; } unsigned char* imagebuf = bitmap_get_buffer(nssprite->bitmap); if (!imagebuf) { msg_data.error = messages_get("NoMemory"); content_broadcast(c, CONTENT_MSG_ERROR, msg_data); return false; } unsigned int row_width = bitmap_get_rowstride(nssprite->bitmap); memcpy(imagebuf, sprite->image, row_width * sprite->height); // TODO: avoid copying entire image buffer /* reverse byte order of each word */ for (uint32_t y = 0; y < sprite->height; y++) { for (uint32_t x = 0; x < sprite->width; x++) { int offset = 4 * (y * sprite->width + x); uint32_t r = imagebuf[offset+3]; uint32_t g = imagebuf[offset+2]; uint32_t b = imagebuf[offset+1]; uint32_t a = imagebuf[offset]; imagebuf[offset] = r; imagebuf[offset+1] = g; imagebuf[offset+2] = b; imagebuf[offset+3] = a; } } c->width = sprite->width; c->height = sprite->height; bitmap_modified(nssprite->bitmap); content_set_ready(c); content_set_done(c); return true; } /** * Destroy a CONTENT_SPRITE and free all resources it owns. */ static void nssprite_destroy(struct content *c) { nssprite_content *nssprite = (nssprite_content *) c; if (nssprite->sprite_area != NULL) rosprite_destroy_sprite_area(nssprite->sprite_area); if (nssprite->bitmap != NULL) bitmap_destroy(nssprite->bitmap); } /** * Redraw a CONTENT_SPRITE. */ static bool nssprite_redraw(struct content *c, struct content_redraw_data *data, const struct rect *clip, const struct redraw_context *ctx) { nssprite_content *nssprite = (nssprite_content *) c; bitmap_flags_t flags = BITMAPF_NONE; if (data->repeat_x) flags |= BITMAPF_REPEAT_X; if (data->repeat_y) flags |= BITMAPF_REPEAT_Y; return ctx->plot->bitmap(data->x, data->y, data->width, data->height, nssprite->bitmap, data->background_colour, flags); } static nserror nssprite_clone(const struct content *old, struct content **newc) { nssprite_content *sprite; nserror error; sprite = talloc_zero(0, nssprite_content); if (sprite == NULL) return NSERROR_NOMEM; error = content__clone(old, &sprite->base); if (error != NSERROR_OK) { content_destroy(&sprite->base); return error; } /* Simply replay convert */ if (old->status == CONTENT_STATUS_READY || old->status == CONTENT_STATUS_DONE) { if (nssprite_convert(&sprite->base) == false) { content_destroy(&sprite->base); return NSERROR_CLONE_FAILED; } } *newc = (struct content *) sprite; return NSERROR_OK; } static void *nssprite_get_internal(const struct content *c, void *context) { nssprite_content *nssprite = (nssprite_content *) c; return nssprite->bitmap; } static content_type nssprite_content_type(void) { return CONTENT_IMAGE; } static const content_handler nssprite_content_handler = { .create = nssprite_create, .data_complete = nssprite_convert, .destroy = nssprite_destroy, .redraw = nssprite_redraw, .clone = nssprite_clone, .get_internal = nssprite_get_internal, .type = nssprite_content_type, .no_share = false, }; static const char *nssprite_types[] = { "image/x-riscos-sprite" }; CONTENT_FACTORY_REGISTER_TYPES(nssprite, nssprite_types, nssprite_content_handler);