1426cd3b3a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see". Backported from #70885.
139 lines
4.9 KiB
C++
139 lines
4.9 KiB
C++
/**************************************************************************/
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/* image_loader_jpegd.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#include "image_loader_jpegd.h"
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#include "core/os/os.h"
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#include "core/print_string.h"
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#include <jpgd.h>
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#include <string.h>
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Error jpeg_load_image_from_buffer(Image *p_image, const uint8_t *p_buffer, int p_buffer_len) {
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jpgd::jpeg_decoder_mem_stream mem_stream(p_buffer, p_buffer_len);
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jpgd::jpeg_decoder decoder(&mem_stream);
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if (decoder.get_error_code() != jpgd::JPGD_SUCCESS) {
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return ERR_CANT_OPEN;
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}
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const int image_width = decoder.get_width();
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const int image_height = decoder.get_height();
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const int comps = decoder.get_num_components();
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if (comps != 1 && comps != 3) {
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return ERR_FILE_CORRUPT;
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}
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if (decoder.begin_decoding() != jpgd::JPGD_SUCCESS) {
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return ERR_FILE_CORRUPT;
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}
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const int dst_bpl = image_width * comps;
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PoolVector<uint8_t> data;
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data.resize(dst_bpl * image_height);
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PoolVector<uint8_t>::Write dw = data.write();
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jpgd::uint8 *pImage_data = (jpgd::uint8 *)dw.ptr();
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for (int y = 0; y < image_height; y++) {
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const jpgd::uint8 *pScan_line;
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jpgd::uint scan_line_len;
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if (decoder.decode((const void **)&pScan_line, &scan_line_len) != jpgd::JPGD_SUCCESS) {
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return ERR_FILE_CORRUPT;
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}
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jpgd::uint8 *pDst = pImage_data + y * dst_bpl;
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if (comps == 1) {
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memcpy(pDst, pScan_line, dst_bpl);
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} else {
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// For images with more than 1 channel pScan_line will always point to a buffer
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// containing 32-bit RGBA pixels. Alpha is always 255 and we ignore it.
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for (int x = 0; x < image_width; x++) {
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pDst[0] = pScan_line[x * 4 + 0];
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pDst[1] = pScan_line[x * 4 + 1];
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pDst[2] = pScan_line[x * 4 + 2];
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pDst += 3;
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}
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}
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}
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//all good
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Image::Format fmt;
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if (comps == 1) {
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fmt = Image::FORMAT_L8;
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} else {
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fmt = Image::FORMAT_RGB8;
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}
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dw.release();
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p_image->create(image_width, image_height, false, fmt, data);
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return OK;
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}
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Error ImageLoaderJPG::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) {
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PoolVector<uint8_t> src_image;
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uint64_t src_image_len = f->get_len();
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ERR_FAIL_COND_V(src_image_len == 0, ERR_FILE_CORRUPT);
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src_image.resize(src_image_len);
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PoolVector<uint8_t>::Write w = src_image.write();
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f->get_buffer(&w[0], src_image_len);
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f->close();
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Error err = jpeg_load_image_from_buffer(p_image.ptr(), w.ptr(), src_image_len);
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return err;
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}
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void ImageLoaderJPG::get_recognized_extensions(List<String> *p_extensions) const {
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p_extensions->push_back("jpg");
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p_extensions->push_back("jpeg");
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}
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static Ref<Image> _jpegd_mem_loader_func(const uint8_t *p_png, int p_size) {
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Ref<Image> img;
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img.instance();
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Error err = jpeg_load_image_from_buffer(img.ptr(), p_png, p_size);
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ERR_FAIL_COND_V(err, Ref<Image>());
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return img;
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}
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ImageLoaderJPG::ImageLoaderJPG() {
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Image::_jpg_mem_loader_func = _jpegd_mem_loader_func;
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}
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