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149 lines
5.7 KiB
C++
149 lines
5.7 KiB
C++
/* Python-rgbcx Texture Compression Library
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Copyright (C) 2021 Andrew Cassidy <drewcassidy@me.com>
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Partially derived from rgbcx.h written by Richard Geldreich <richgel99@gmail.com>
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and licenced under the public domain
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "_bindings.h"
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#include <pybind11/pybind11.h>
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#include "Color.h"
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#include "Decoder.h"
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#include "Encoder.h"
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#include "Texture.h"
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#include "_bindings.h"
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namespace py = pybind11;
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namespace pybind11::detail {
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using namespace quicktex;
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/// Type caster for color class to allow it to be converted to and from a python tuple
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template <> struct type_caster<Color> {
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public:
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PYBIND11_TYPE_CASTER(Color, _("Color"));
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bool load(handle src, bool) {
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PyObject *source = src.ptr();
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PyObject *tmp = PySequence_Tuple(source);
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// if the object is not a tuple, return false
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if (!tmp) { return false; } // incorrect type
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// check the size
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Py_ssize_t size = PyTuple_Size(tmp);
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if (size < 3 || size > 4) { return false; } // incorrect size
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value.a = 0xFF;
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// now we get the contents
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for (int i = 0; i < size; i++) {
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PyObject *src_chan = PyTuple_GetItem(tmp, i);
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PyObject *tmp_chan = PyNumber_Long(src_chan);
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if (!tmp_chan) return false; // incorrect channel type
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auto chan = PyLong_AsLong(tmp_chan);
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if (chan > 0xFF || chan < 0) return false; // item out of range
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value[static_cast<unsigned>(i)] = static_cast<uint8_t>(chan);
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Py_DECREF(tmp_chan);
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}
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Py_DECREF(tmp);
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return !PyErr_Occurred();
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}
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static handle cast(Color src, return_value_policy, handle) {
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PyObject *val = PyTuple_New(4);
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for (int i = 0; i < 4; i++) {
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PyObject *chan = PyLong_FromLong(src[static_cast<unsigned>(i)]);
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PyTuple_SetItem(val, i, chan);
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}
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return val;
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}
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};
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} // namespace pybind11::detail
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namespace quicktex::bindings {
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void InitS3TC(py::module_ &m);
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/*py::bytes EncodeImage(const BlockEncoder &self, py::bytes decoded, unsigned image_width, unsigned image_height) {
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if (image_width % self.BlockWidth() != 0) throw std::invalid_argument("Width is not an even multiple of block_width");
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if (image_height % self.BlockHeight() != 0) throw std::invalid_argument("Height is not an even multiple of block_height");
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if (image_width == 0 || image_height == 0) throw std::invalid_argument("Image has zero size");
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size_t size = image_width * image_height;
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size_t block_size = (size / (self.BlockHeight() * self.BlockWidth())) * self.BlockSize();
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size_t color_size = size * sizeof(Color);
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std::string encoded_str = std::string(block_size, 0);
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std::string decoded_str = (std::string)decoded; // decoded data is copied here, unfortunately
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if (decoded_str.size() != color_size) throw std::invalid_argument("Incompatible data: image width and height do not match the size of the decoded image");
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self.EncodeImage(reinterpret_cast<uint8_t *>(encoded_str.data()), reinterpret_cast<Color *>(decoded_str.data()), image_width, image_height);
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auto bytes = py::bytes(encoded_str); // encoded data is copied here, unfortunately
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return bytes;
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}
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py::bytes DecodeImage(const BlockDecoder &self, py::bytes encoded, unsigned image_width, unsigned image_height) {
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if (image_width % self.WidthInBlocks() != 0) throw std::invalid_argument("Width is not an even multiple of block_width");
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if (image_height % self.HeightInBlocks() != 0) throw std::invalid_argument("Height is not an even multiple of block_height");
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if (image_width == 0 || image_height == 0) throw std::invalid_argument("Image has zero size");
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size_t size = image_width * image_height;
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size_t block_size = (size / (self.HeightInBlocks() * self.WidthInBlocks())) * self.BlockSize();
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size_t color_size = size * sizeof(Color);
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std::string encoded_str = (std::string)encoded; // encoded data is copied here, unfortunately
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std::string decoded_str = std::string(color_size, 0);
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if (encoded_str.size() != block_size) throw std::invalid_argument("Incompatible data: image width and height do not match the size of the encoded image");
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self.DecodeImage(reinterpret_cast<uint8_t *>(encoded_str.data()), reinterpret_cast<Color *>(decoded_str.data()), image_width, image_height);
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auto bytes = py::bytes(decoded_str); // decoded data is copied here, unfortunately
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return bytes;
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}*/
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PYBIND11_MODULE(_quicktex, m) {
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m.doc() = "More Stuff";
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py::options options;
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py::class_<Texture> texture(m, "Texture");
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texture.def_property_readonly("size", &Texture::Size);
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texture.def_property_readonly("dimensions", &Texture::Dimensions);
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texture.def_property_readonly("width", &Texture::Width);
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texture.def_property_readonly("height", &Texture::Height);
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py::class_<RawTexture> raw_texture(m, "RawTexture", texture);
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raw_texture.def(py::init<int, int>(), "width"_a, "height"_a);
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raw_texture.def("get_pixel", &RawTexture::GetPixel);
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raw_texture.def("set_pixel", &RawTexture::SetPixel);
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InitS3TC(m);
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}
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} // namespace quicktex::bindings
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