mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-11-28 09:13:08 +03:00
140 lines
3.3 KiB
C
140 lines
3.3 KiB
C
/*
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* Copyright 2010 Chris Young <chris@unsatisfactorysoftware.co.uk>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file
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* Content for image/webp (libwebp implementation).
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*
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*/
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#include "utils/config.h"
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#ifdef WITH_WEBP
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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#include <webp/decode.h>
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#include "desktop/plotters.h"
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#include "image/bitmap.h"
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#include "content/content_protected.h"
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#include "utils/log.h"
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#include "utils/messages.h"
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#include "utils/utils.h"
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/**
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* Convert a CONTENT_WEBP for display.
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*
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* No conversion is necessary. We merely read the WebP dimensions.
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*/
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bool webp_convert(struct content *c)
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{
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union content_msg_data msg_data;
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const uint8_t *data;
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unsigned char *imagebuf = NULL;
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unsigned long size;
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int width = 0, height = 0;
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char title[100];
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int res = 0;
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uint8_t *res_p = NULL;
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data = (uint8_t *)content__get_source_data(c, &size);
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res = WebPGetInfo(data, size, &width, &height);
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if (res == 0) {
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msg_data.error = messages_get("NoMemory");
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content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
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return false;
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}
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c->bitmap = bitmap_create(width, height, BITMAP_NEW | BITMAP_OPAQUE);
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if (!c->bitmap) {
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msg_data.error = messages_get("NoMemory");
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content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
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return false;
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}
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imagebuf = bitmap_get_buffer(c->bitmap);
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if (!imagebuf) {
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msg_data.error = messages_get("NoMemory");
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content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
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return false;
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}
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unsigned int row_width = bitmap_get_rowstride(c->bitmap);
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res_p = WebPDecodeRGBAInto(data, size, imagebuf,
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row_width * height, row_width);
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if (res_p == NULL) {
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msg_data.error = messages_get("NoMemory");
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content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
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return false;
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}
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c->width = width;
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c->height = height;
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snprintf(title, sizeof(title), messages_get("WebPTitle"),
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width, height, size);
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content__set_title(c, title);
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bitmap_modified(c->bitmap);
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content_set_ready(c);
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content_set_done(c);
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content_set_status(c, "");
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return true;
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}
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/**
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* Destroy a CONTENT_WEBP and free all resources it owns.
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*/
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void webp_destroy(struct content *c)
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{
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if (c->bitmap != NULL)
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bitmap_destroy(c->bitmap);
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}
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/**
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* Redraw a CONTENT_WEBP.
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*/
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bool webp_redraw(struct content *c, int x, int y,
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int width, int height, const struct rect *clip,
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float scale, colour background_colour)
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{
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return plot.bitmap(x, y, width, height,
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c->bitmap, background_colour, BITMAPF_NONE);
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}
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bool webp_clone(const struct content *old, struct content *new_content)
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{
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/* Simply replay convert */
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if (old->status == CONTENT_STATUS_READY ||
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old->status == CONTENT_STATUS_DONE) {
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if (webp_convert(new_content) == false)
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return false;
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}
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return true;
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}
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#endif
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