diff options
Diffstat (limited to 'modules/etc/texture_loader_pkm.cpp')
| -rw-r--r-- | modules/etc/texture_loader_pkm.cpp | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/modules/etc/texture_loader_pkm.cpp b/modules/etc/texture_loader_pkm.cpp new file mode 100644 index 0000000000..c04528d2a0 --- /dev/null +++ b/modules/etc/texture_loader_pkm.cpp @@ -0,0 +1,114 @@ +/*************************************************************************/ +/* texture_loader_pkm.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* http://www.godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2017 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 "texture_loader_pkm.h" + +#include "os/file_access.h" +#include <string.h> + +struct ETC1Header { + char tag[6]; // "PKM 10" + uint16_t format; // Format == number of mips (== zero) + uint16_t texWidth; // Texture dimensions, multiple of 4 (big-endian) + uint16_t texHeight; + uint16_t origWidth; // Original dimensions (big-endian) + uint16_t origHeight; +}; + +RES ResourceFormatPKM::load(const String &p_path, const String &p_original_path, Error *r_error) { + + if (r_error) + *r_error = ERR_CANT_OPEN; + + Error err; + FileAccess *f = FileAccess::open(p_path, FileAccess::READ, &err); + if (!f) + return RES(); + + FileAccessRef fref(f); + if (r_error) + *r_error = ERR_FILE_CORRUPT; + + ERR_EXPLAIN("Unable to open PKM texture file: " + p_path); + ERR_FAIL_COND_V(err != OK, RES()); + + // big endian + f->set_endian_swap(true); + + ETC1Header h; + ERR_EXPLAIN("Invalid or Unsupported PKM texture file: " + p_path); + f->get_buffer((uint8_t *)&h.tag, sizeof(h.tag)); + if (strncmp(h.tag, "PKM 10", sizeof(h.tag))) + ERR_FAIL_V(RES()); + + h.format = f->get_16(); + h.texWidth = f->get_16(); + h.texHeight = f->get_16(); + h.origWidth = f->get_16(); + h.origHeight = f->get_16(); + + PoolVector<uint8_t> src_data; + + uint32_t size = h.texWidth * h.texHeight / 2; + src_data.resize(size); + PoolVector<uint8_t>::Write wb = src_data.write(); + f->get_buffer(wb.ptr(), size); + wb = PoolVector<uint8_t>::Write(); + + int mipmaps = h.format; + int width = h.origWidth; + int height = h.origHeight; + + Ref<Image> img = memnew(Image(width, height, mipmaps, Image::FORMAT_ETC, src_data)); + + Ref<ImageTexture> texture = memnew(ImageTexture); + texture->create_from_image(img); + + if (r_error) + *r_error = OK; + + return texture; +} + +void ResourceFormatPKM::get_recognized_extensions(List<String> *p_extensions) const { + + p_extensions->push_back("pkm"); +} + +bool ResourceFormatPKM::handles_type(const String &p_type) const { + + return ClassDB::is_parent_class(p_type, "Texture"); +} + +String ResourceFormatPKM::get_resource_type(const String &p_path) const { + + if (p_path.get_extension().to_lower() == "pkm") + return "ImageTexture"; + return ""; +} |