/*************************************************************************/ /* image_loader_jpegd.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /*************************************************************************/ #include "image_loader_jpegd.h" #include "core/os/os.h" #include "core/print_string.h" #include <jpgd.h> #include <string.h> Error jpeg_load_image_from_buffer(Image *p_image, const uint8_t *p_buffer, int p_buffer_len) { jpgd::jpeg_decoder_mem_stream mem_stream(p_buffer, p_buffer_len); jpgd::jpeg_decoder decoder(&mem_stream); if (decoder.get_error_code() != jpgd::JPGD_SUCCESS) { return ERR_CANT_OPEN; } const int image_width = decoder.get_width(); const int image_height = decoder.get_height(); const int comps = decoder.get_num_components(); if (comps != 1 && comps != 3) { return ERR_FILE_CORRUPT; } if (decoder.begin_decoding() != jpgd::JPGD_SUCCESS) { return ERR_FILE_CORRUPT; } const int dst_bpl = image_width * comps; Vector<uint8_t> data; data.resize(dst_bpl * image_height); uint8_t *dw = data.ptrw(); jpgd::uint8 *pImage_data = (jpgd::uint8 *)dw; for (int y = 0; y < image_height; y++) { const jpgd::uint8 *pScan_line; jpgd::uint scan_line_len; if (decoder.decode((const void **)&pScan_line, &scan_line_len) != jpgd::JPGD_SUCCESS) { return ERR_FILE_CORRUPT; } jpgd::uint8 *pDst = pImage_data + y * dst_bpl; if (comps == 1) { memcpy(pDst, pScan_line, dst_bpl); } else { // For images with more than 1 channel pScan_line will always point to a buffer // containing 32-bit RGBA pixels. Alpha is always 255 and we ignore it. for (int x = 0; x < image_width; x++) { pDst[0] = pScan_line[x * 4 + 0]; pDst[1] = pScan_line[x * 4 + 1]; pDst[2] = pScan_line[x * 4 + 2]; pDst += 3; } } } //all good Image::Format fmt; if (comps == 1) { fmt = Image::FORMAT_L8; } else { fmt = Image::FORMAT_RGB8; } p_image->create(image_width, image_height, false, fmt, data); return OK; } Error ImageLoaderJPG::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) { Vector<uint8_t> src_image; int src_image_len = f->get_len(); ERR_FAIL_COND_V(src_image_len == 0, ERR_FILE_CORRUPT); src_image.resize(src_image_len); uint8_t *w = src_image.ptrw(); f->get_buffer(&w[0], src_image_len); f->close(); Error err = jpeg_load_image_from_buffer(p_image.ptr(), w, src_image_len); return err; } void ImageLoaderJPG::get_recognized_extensions(List<String> *p_extensions) const { p_extensions->push_back("jpg"); p_extensions->push_back("jpeg"); } static Ref<Image> _jpegd_mem_loader_func(const uint8_t *p_png, int p_size) { Ref<Image> img; img.instance(); Error err = jpeg_load_image_from_buffer(img.ptr(), p_png, p_size); ERR_FAIL_COND_V(err, Ref<Image>()); return img; } ImageLoaderJPG::ImageLoaderJPG() { Image::_jpg_mem_loader_func = _jpegd_mem_loader_func; }