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- /*************************************************************************/
- /* image_loader_bmp.cpp */
- /*************************************************************************/
- /* This file is part of: */
- /* GODOT ENGINE */
- /* https://godotengine.org */
- /*************************************************************************/
- /* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
- /* Copyright (c) 2014-2019 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_bmp.h"
- Error ImageLoaderBMP::convert_to_image(Ref<Image> p_image,
- const uint8_t *p_buffer,
- const uint8_t *p_color_buffer,
- const bmp_header_s &p_header) {
- Error err = OK;
- if (p_buffer == NULL)
- err = FAILED;
- if (err == OK) {
- size_t index = 0;
- size_t width = (size_t)p_header.bmp_info_header.bmp_width;
- size_t height = (size_t)p_header.bmp_info_header.bmp_height;
- size_t bits_per_pixel = (size_t)p_header.bmp_info_header.bmp_bit_count;
- if (p_header.bmp_info_header.bmp_compression != 0) {
- err = FAILED;
- }
- if (!(bits_per_pixel == 24 || bits_per_pixel == 32)) {
- err = FAILED;
- }
- if (err == OK) {
- uint32_t line_width = ((p_header.bmp_info_header.bmp_width *
- p_header.bmp_info_header.bmp_bit_count / 8) +
- 3) &
- ~3;
- PoolVector<uint8_t> image_data;
- err = image_data.resize(width * height * 4);
- PoolVector<uint8_t>::Write image_data_w = image_data.write();
- uint8_t *write_buffer = image_data_w.ptr();
- const uint8_t *line = p_buffer + (line_width * (height - 1));
- for (unsigned int i = 0; i < height; i++) {
- const uint8_t *line_ptr = line;
- for (unsigned int j = 0; j < width; j++) {
- switch (bits_per_pixel) {
- case 24: {
- uint32_t color = *((uint32_t *)line_ptr);
- write_buffer[index + 2] = color & 0xff;
- write_buffer[index + 1] = (color >> 8) & 0xff;
- write_buffer[index + 0] = (color >> 16) & 0xff;
- write_buffer[index + 3] = 0xff;
- index += 4;
- line_ptr += 3;
- } break;
- case 32: {
- uint32_t color = *((uint32_t *)line_ptr);
- write_buffer[index + 2] = color & 0xff;
- write_buffer[index + 1] = (color >> 8) & 0xff;
- write_buffer[index + 0] = (color >> 16) & 0xff;
- write_buffer[index + 3] = color >> 24;
- index += 4;
- line_ptr += 4;
- } break;
- }
- }
- line -= line_width;
- }
- p_image->create(width, height, 0, Image::FORMAT_RGBA8, image_data);
- }
- }
- return err;
- }
- Error ImageLoaderBMP::load_image(Ref<Image> p_image, FileAccess *f,
- bool p_force_linear, float p_scale) {
- bmp_header_s bmp_header;
- Error err = ERR_INVALID_DATA;
- if (f->get_len() > sizeof(bmp_header)) {
- // File Header
- bmp_header.bmp_file_header.bmp_signature = f->get_16();
- if (bmp_header.bmp_file_header.bmp_signature == BITMAP_SIGNATURE) {
- bmp_header.bmp_file_header.bmp_file_size = f->get_32();
- bmp_header.bmp_file_header.bmp_file_padding = f->get_32();
- bmp_header.bmp_file_header.bmp_file_offset = f->get_32();
- // Info Header
- bmp_header.bmp_info_header.bmp_header_size = f->get_32();
- bmp_header.bmp_info_header.bmp_width = f->get_32();
- bmp_header.bmp_info_header.bmp_height = f->get_32();
- bmp_header.bmp_info_header.bmp_planes = f->get_16();
- bmp_header.bmp_info_header.bmp_bit_count = f->get_16();
- bmp_header.bmp_info_header.bmp_compression = f->get_32();
- bmp_header.bmp_info_header.bmp_size_image = f->get_32();
- bmp_header.bmp_info_header.bmp_pixels_per_meter_x = f->get_32();
- bmp_header.bmp_info_header.bmp_pixels_per_meter_y = f->get_32();
- bmp_header.bmp_info_header.bmp_colors_used = f->get_32();
- bmp_header.bmp_info_header.bmp_important_colors = f->get_32();
- bmp_header.bmp_info_header.bmp_red_mask = f->get_32();
- bmp_header.bmp_info_header.bmp_green_mask = f->get_32();
- bmp_header.bmp_info_header.bmp_blue_mask = f->get_32();
- bmp_header.bmp_info_header.bmp_alpha_mask = f->get_32();
- bmp_header.bmp_info_header.bmp_cs_type = f->get_32();
- for (int i = 0; i < 9; i++)
- bmp_header.bmp_info_header.bmp_endpoints[i] = f->get_32();
- bmp_header.bmp_info_header.bmp_gamma_red = f->get_32();
- bmp_header.bmp_info_header.bmp_gamma_green = f->get_32();
- bmp_header.bmp_info_header.bmp_gamma_blue = f->get_32();
- f->seek(sizeof(bmp_header.bmp_file_header) +
- bmp_header.bmp_info_header.bmp_header_size);
- uint32_t color_table_size = 0;
- if (bmp_header.bmp_info_header.bmp_bit_count == 1)
- color_table_size = 2;
- else if (bmp_header.bmp_info_header.bmp_bit_count == 4)
- color_table_size = 16;
- else if (bmp_header.bmp_info_header.bmp_bit_count == 8)
- color_table_size = 256;
- PoolVector<uint8_t> bmp_color_table;
- if (color_table_size > 0) {
- err = bmp_color_table.resize(color_table_size * 4);
- PoolVector<uint8_t>::Write bmp_color_table_w = bmp_color_table.write();
- f->get_buffer(bmp_color_table_w.ptr(),
- bmp_header.bmp_info_header.bmp_colors_used * 4);
- }
- f->seek(bmp_header.bmp_file_header.bmp_file_offset);
- uint32_t bmp_buffer_size = (bmp_header.bmp_file_header.bmp_file_size -
- bmp_header.bmp_file_header.bmp_file_offset);
- PoolVector<uint8_t> bmp_buffer;
- err = bmp_buffer.resize(bmp_buffer_size);
- if (err == OK) {
- PoolVector<uint8_t>::Write bmp_buffer_w = bmp_buffer.write();
- f->get_buffer(bmp_buffer_w.ptr(), bmp_buffer_size);
- PoolVector<uint8_t>::Read bmp_buffer_r = bmp_buffer.read();
- PoolVector<uint8_t>::Read bmp_color_table_r = bmp_color_table.read();
- err = convert_to_image(p_image, bmp_buffer_r.ptr(),
- bmp_color_table_r.ptr(), bmp_header);
- }
- f->close();
- }
- }
- return err;
- }
- void ImageLoaderBMP::get_recognized_extensions(
- List<String> *p_extensions) const {
- p_extensions->push_back("bmp");
- }
- ImageLoaderBMP::ImageLoaderBMP() {}
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