0be6d925dc
Which means that reduz' beloved style which we all became used to will now be changed automatically to remove the first empty line. This makes us lean closer to 1TBS (the one true brace style) instead of hybridating it with some Allman-inspired spacing. There's still the case of braces around single-statement blocks that needs to be addressed (but clang-format can't help with that, but clang-tidy may if we agree about it). Part of #33027.
313 lines
9.4 KiB
C++
313 lines
9.4 KiB
C++
/*************************************************************************/
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/* image_loader_tga.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) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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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_tga.h"
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#include "core/os/os.h"
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#include "core/print_string.h"
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Error ImageLoaderTGA::decode_tga_rle(const uint8_t *p_compressed_buffer, size_t p_pixel_size, uint8_t *p_uncompressed_buffer, size_t p_output_size) {
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Error error;
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Vector<uint8_t> pixels;
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error = pixels.resize(p_pixel_size);
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if (error != OK)
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return error;
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uint8_t *pixels_w = pixels.ptrw();
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size_t compressed_pos = 0;
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size_t output_pos = 0;
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size_t c = 0;
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size_t count = 0;
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while (output_pos < p_output_size) {
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c = p_compressed_buffer[compressed_pos];
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compressed_pos += 1;
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count = (c & 0x7f) + 1;
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if (c & 0x80) {
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for (size_t i = 0; i < p_pixel_size; i++) {
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pixels_w[i] = p_compressed_buffer[compressed_pos];
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compressed_pos += 1;
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}
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for (size_t i = 0; i < count; i++) {
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for (size_t j = 0; j < p_pixel_size; j++) {
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p_uncompressed_buffer[output_pos + j] = pixels_w[j];
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}
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output_pos += p_pixel_size;
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}
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} else {
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count *= p_pixel_size;
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for (size_t i = 0; i < count; i++) {
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p_uncompressed_buffer[output_pos] = p_compressed_buffer[compressed_pos];
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compressed_pos += 1;
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output_pos += 1;
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}
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}
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}
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return OK;
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}
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Error ImageLoaderTGA::convert_to_image(Ref<Image> p_image, const uint8_t *p_buffer, const tga_header_s &p_header, const uint8_t *p_palette, const bool p_is_monochrome) {
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#define TGA_PUT_PIXEL(r, g, b, a) \
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int image_data_ofs = ((y * width) + x); \
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image_data_w[image_data_ofs * 4 + 0] = r; \
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image_data_w[image_data_ofs * 4 + 1] = g; \
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image_data_w[image_data_ofs * 4 + 2] = b; \
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image_data_w[image_data_ofs * 4 + 3] = a;
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uint32_t width = p_header.image_width;
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uint32_t height = p_header.image_height;
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tga_origin_e origin = static_cast<tga_origin_e>((p_header.image_descriptor & TGA_ORIGIN_MASK) >> TGA_ORIGIN_SHIFT);
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uint32_t x_start;
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int32_t x_step;
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uint32_t x_end;
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uint32_t y_start;
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int32_t y_step;
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uint32_t y_end;
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if (origin == TGA_ORIGIN_TOP_LEFT || origin == TGA_ORIGIN_TOP_RIGHT) {
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y_start = 0;
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y_step = 1;
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y_end = height;
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} else {
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y_start = height - 1;
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y_step = -1;
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y_end = -1;
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}
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if (origin == TGA_ORIGIN_TOP_LEFT || origin == TGA_ORIGIN_BOTTOM_LEFT) {
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x_start = 0;
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x_step = 1;
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x_end = width;
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} else {
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x_start = width - 1;
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x_step = -1;
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x_end = -1;
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}
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Vector<uint8_t> image_data;
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image_data.resize(width * height * sizeof(uint32_t));
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uint8_t *image_data_w = image_data.ptrw();
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size_t i = 0;
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uint32_t x = x_start;
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uint32_t y = y_start;
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if (p_header.pixel_depth == 8) {
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if (p_is_monochrome) {
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while (y != y_end) {
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while (x != x_end) {
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uint8_t shade = p_buffer[i];
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TGA_PUT_PIXEL(shade, shade, shade, 0xff)
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x += x_step;
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i += 1;
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}
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x = x_start;
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y += y_step;
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}
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} else {
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while (y != y_end) {
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while (x != x_end) {
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uint8_t index = p_buffer[i];
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uint8_t r = 0x00;
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uint8_t g = 0x00;
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uint8_t b = 0x00;
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uint8_t a = 0xff;
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if (p_header.color_map_depth == 24) {
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// Due to low-high byte order, the color table must be
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// read in the same order as image data (little endian)
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r = (p_palette[(index * 3) + 2]);
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g = (p_palette[(index * 3) + 1]);
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b = (p_palette[(index * 3) + 0]);
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} else {
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return ERR_INVALID_DATA;
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}
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TGA_PUT_PIXEL(r, g, b, a)
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x += x_step;
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i += 1;
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}
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x = x_start;
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y += y_step;
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}
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}
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} else if (p_header.pixel_depth == 24) {
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while (y != y_end) {
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while (x != x_end) {
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uint8_t r = p_buffer[i + 2];
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uint8_t g = p_buffer[i + 1];
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uint8_t b = p_buffer[i + 0];
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TGA_PUT_PIXEL(r, g, b, 0xff)
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x += x_step;
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i += 3;
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}
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x = x_start;
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y += y_step;
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}
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} else if (p_header.pixel_depth == 32) {
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while (y != y_end) {
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while (x != x_end) {
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uint8_t a = p_buffer[i + 3];
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uint8_t r = p_buffer[i + 2];
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uint8_t g = p_buffer[i + 1];
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uint8_t b = p_buffer[i + 0];
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TGA_PUT_PIXEL(r, g, b, a)
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x += x_step;
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i += 4;
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}
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x = x_start;
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y += y_step;
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}
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}
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p_image->create(width, height, false, Image::FORMAT_RGBA8, image_data);
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return OK;
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}
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Error ImageLoaderTGA::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) {
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Vector<uint8_t> src_image;
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int 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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ERR_FAIL_COND_V(src_image_len < (int)sizeof(tga_header_s), ERR_FILE_CORRUPT);
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src_image.resize(src_image_len);
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Error err = OK;
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tga_header_s tga_header;
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tga_header.id_length = f->get_8();
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tga_header.color_map_type = f->get_8();
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tga_header.image_type = static_cast<tga_type_e>(f->get_8());
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tga_header.first_color_entry = f->get_16();
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tga_header.color_map_length = f->get_16();
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tga_header.color_map_depth = f->get_8();
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tga_header.x_origin = f->get_16();
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tga_header.y_origin = f->get_16();
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tga_header.image_width = f->get_16();
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tga_header.image_height = f->get_16();
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tga_header.pixel_depth = f->get_8();
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tga_header.image_descriptor = f->get_8();
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bool is_encoded = (tga_header.image_type == TGA_TYPE_RLE_INDEXED || tga_header.image_type == TGA_TYPE_RLE_RGB || tga_header.image_type == TGA_TYPE_RLE_MONOCHROME);
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bool has_color_map = (tga_header.image_type == TGA_TYPE_RLE_INDEXED || tga_header.image_type == TGA_TYPE_INDEXED);
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bool is_monochrome = (tga_header.image_type == TGA_TYPE_RLE_MONOCHROME || tga_header.image_type == TGA_TYPE_MONOCHROME);
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if (tga_header.image_type == TGA_TYPE_NO_DATA)
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err = FAILED;
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if (has_color_map) {
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if (tga_header.color_map_length > 256 || (tga_header.color_map_depth != 24) || tga_header.color_map_type != 1) {
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err = FAILED;
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}
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} else {
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if (tga_header.color_map_type) {
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err = FAILED;
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}
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}
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if (tga_header.image_width <= 0 || tga_header.image_height <= 0)
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err = FAILED;
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if (!(tga_header.pixel_depth == 8 || tga_header.pixel_depth == 24 || tga_header.pixel_depth == 32)) {
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err = FAILED;
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}
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if (err == OK) {
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f->seek(f->get_position() + tga_header.id_length);
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Vector<uint8_t> palette;
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if (has_color_map) {
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size_t color_map_size = tga_header.color_map_length * (tga_header.color_map_depth >> 3);
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err = palette.resize(color_map_size);
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if (err == OK) {
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uint8_t *palette_w = palette.ptrw();
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f->get_buffer(&palette_w[0], color_map_size);
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} else {
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return OK;
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}
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}
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uint8_t *src_image_w = src_image.ptrw();
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f->get_buffer(&src_image_w[0], src_image_len - f->get_position());
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const uint8_t *src_image_r = src_image.ptr();
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const size_t pixel_size = tga_header.pixel_depth >> 3;
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const size_t buffer_size = (tga_header.image_width * tga_header.image_height) * pixel_size;
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Vector<uint8_t> uncompressed_buffer;
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uncompressed_buffer.resize(buffer_size);
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uint8_t *uncompressed_buffer_w = uncompressed_buffer.ptrw();
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const uint8_t *uncompressed_buffer_r;
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const uint8_t *buffer = nullptr;
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if (is_encoded) {
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err = decode_tga_rle(src_image_r, pixel_size, uncompressed_buffer_w, buffer_size);
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if (err == OK) {
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uncompressed_buffer_r = uncompressed_buffer.ptr();
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buffer = uncompressed_buffer_r;
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}
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} else {
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buffer = src_image_r;
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};
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if (err == OK) {
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const uint8_t *palette_r = palette.ptr();
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err = convert_to_image(p_image, buffer, tga_header, palette_r, is_monochrome);
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}
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}
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f->close();
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return err;
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}
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void ImageLoaderTGA::get_recognized_extensions(List<String> *p_extensions) const {
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p_extensions->push_back("tga");
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}
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ImageLoaderTGA::ImageLoaderTGA() {
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}
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