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| /* |
| * Copyright 2010 Chris Young <chris@unsatisfactorysoftware.co.uk> |
| * |
| * 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 <http://www.gnu.org/licenses/>. |
| */ |
| |
| /** \file |
| * Content for image/webp (libwebp implementation). |
| * |
| */ |
| |
| #include <assert.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <webp/decode.h> |
| #include "desktop/plotters.h" |
| #include "image/bitmap.h" |
| #include "content/content_protected.h" |
| #include "utils/log.h" |
| #include "utils/messages.h" |
| #include "utils/utils.h" |
| |
| typedef struct webp_content |
| { |
| struct content base; |
| |
| struct bitmap *bitmap; /**< Created NetSurf bitmap */ |
| } webp_content; |
| |
| |
| static nserror webp_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) |
| { |
| webp_content *webp; |
| nserror error; |
| |
| webp = calloc(1, sizeof(webp_content)); |
| if (webp == NULL) |
| return NSERROR_NOMEM; |
| |
| error = content__init(&webp->base, handler, imime_type, params, |
| llcache, fallback_charset, quirks); |
| if (error != NSERROR_OK) { |
| free(webp); |
| return error; |
| } |
| |
| *c = (struct content *) webp; |
| |
| return NSERROR_OK; |
| } |
| |
| /** |
| * Convert a CONTENT_WEBP for display. |
| * |
| * No conversion is necessary. We merely read the WebP dimensions. |
| */ |
| |
| static bool webp_convert(struct content *c) |
| { |
| webp_content *webp = (webp_content *)c; |
| union content_msg_data msg_data; |
| const uint8_t *data; |
| unsigned char *imagebuf = NULL; |
| unsigned long size; |
| int width = 0, height = 0; |
| char *title; |
| int res = 0; |
| uint8_t *res_p = NULL; |
| |
| data = (uint8_t *)content__get_source_data(c, &size); |
| |
| res = WebPGetInfo(data, size, &width, &height); |
| if (res == 0) { |
| msg_data.error = messages_get("NoMemory"); |
| content_broadcast(c, CONTENT_MSG_ERROR, msg_data); |
| return false; |
| } |
| |
| webp->bitmap = bitmap_create(width, height, BITMAP_NEW | BITMAP_OPAQUE); |
| if (!webp->bitmap) { |
| msg_data.error = messages_get("NoMemory"); |
| content_broadcast(c, CONTENT_MSG_ERROR, msg_data); |
| return false; |
| } |
| |
| imagebuf = bitmap_get_buffer(webp->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(webp->bitmap); |
| |
| res_p = WebPDecodeRGBAInto(data, size, imagebuf, |
| row_width * height, row_width); |
| if (res_p == NULL) { |
| msg_data.error = messages_get("NoMemory"); |
| content_broadcast(c, CONTENT_MSG_ERROR, msg_data); |
| return false; |
| } |
| |
| c->width = width; |
| c->height = height; |
| |
| /* set title */ |
| title = messages_get_buff("WebPTitle", |
| nsurl_access_leaf(llcache_handle_get_url(c->llcache)), |
| c->width, c->height); |
| if (title != NULL) { |
| content__set_title(c, title); |
| free(title); |
| } |
| |
| bitmap_modified(webp->bitmap); |
| |
| content_set_ready(c); |
| content_set_done(c); |
| |
| content_set_status(c, ""); |
| return true; |
| } |
| |
| |
| /** |
| * Destroy a CONTENT_WEBP and free all resources it owns. |
| */ |
| |
| static void webp_destroy(struct content *c) |
| { |
| webp_content *webp = (webp_content *)c; |
| |
| if (webp->bitmap != NULL) |
| bitmap_destroy(webp->bitmap); |
| } |
| |
| |
| /** |
| * Redraw a CONTENT_WEBP. |
| */ |
| |
| static bool webp_redraw(struct content *c, struct content_redraw_data *data, |
| const struct rect *clip, const struct redraw_context *ctx) |
| { |
| webp_content *webp = (webp_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, |
| webp->bitmap, data->background_colour, flags); |
| } |
| |
| |
| static nserror webp_clone(const struct content *old, struct content **newc) |
| { |
| webp_content *webp; |
| nserror error; |
| |
| webp = calloc(1, sizeof(webp_content)); |
| if (webp == NULL) |
| return NSERROR_NOMEM; |
| |
| error = content__clone(old, &webp->base); |
| if (error != NSERROR_OK) { |
| content_destroy(&webp->base); |
| return error; |
| } |
| |
| /* Simply replay convert */ |
| if (old->status == CONTENT_STATUS_READY || |
| old->status == CONTENT_STATUS_DONE) { |
| if (webp_convert(&webp->base) == false) { |
| content_destroy(&webp->base); |
| return NSERROR_CLONE_FAILED; |
| } |
| } |
| |
| *newc = (struct content *) webp; |
| |
| return NSERROR_OK; |
| } |
| |
| static void *webp_get_internal(const struct content *c, void *context) |
| { |
| webp_content *webp = (webp_content *)c; |
| |
| return webp->bitmap; |
| } |
| |
| static content_type webp_content_type(void) |
| { |
| return CONTENT_IMAGE; |
| } |
| |
| static const content_handler webp_content_handler = { |
| .create = webp_create, |
| .data_complete = webp_convert, |
| .destroy = webp_destroy, |
| .redraw = webp_redraw, |
| .clone = webp_clone, |
| .get_internal = webp_get_internal, |
| .type = webp_content_type, |
| .no_share = false, |
| }; |
| |
| static const char *webp_types[] = { |
| "image/webp" |
| }; |
| |
| CONTENT_FACTORY_REGISTER_TYPES(webp, webp_types, webp_content_handler); |
| |