183 lines
6.1 KiB
C++
183 lines
6.1 KiB
C++
/*************************************************************************/
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/* image_etc.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2017 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_etc.h"
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#include "image.h"
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#include "os/copymem.h"
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#include "print_string.h"
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#include "rg_etc1.h"
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static void _decompress_etc(Image *p_img) {
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ERR_FAIL_COND(p_img->get_format() != Image::FORMAT_ETC);
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int imgw = p_img->get_width();
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int imgh = p_img->get_height();
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PoolVector<uint8_t> src = p_img->get_data();
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PoolVector<uint8_t> dst;
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PoolVector<uint8_t>::Read r = src.read();
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int mmc = p_img->get_mipmap_count();
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for (int i = 0; i <= mmc; i++) {
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dst.resize(dst.size() + imgw * imgh * 3);
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const uint8_t *srcbr = &r[p_img->get_mipmap_offset(i)];
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PoolVector<uint8_t>::Write w = dst.write();
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uint8_t *wptr = &w[dst.size() - imgw * imgh * 3];
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int bw = MAX(imgw / 4, 1);
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int bh = MAX(imgh / 4, 1);
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for (int y = 0; y < bh; y++) {
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for (int x = 0; x < bw; x++) {
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uint8_t block[4 * 4 * 4];
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rg_etc1::unpack_etc1_block(srcbr, (unsigned int *)block);
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srcbr += 8;
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int maxx = MIN(imgw, 4);
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int maxy = MIN(imgh, 4);
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for (int yy = 0; yy < maxy; yy++) {
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for (int xx = 0; xx < maxx; xx++) {
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uint32_t src_ofs = (yy * 4 + xx) * 4;
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uint32_t dst_ofs = ((y * 4 + yy) * imgw + x * 4 + xx) * 3;
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wptr[dst_ofs + 0] = block[src_ofs + 0];
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wptr[dst_ofs + 1] = block[src_ofs + 1];
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wptr[dst_ofs + 2] = block[src_ofs + 2];
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}
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}
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}
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}
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imgw = MAX(1, imgw / 2);
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imgh = MAX(1, imgh / 2);
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}
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r = PoolVector<uint8_t>::Read();
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//print_line("Re Creating ETC into regular image: w "+itos(p_img->get_width())+" h "+itos(p_img->get_height())+" mm "+itos(p_img->get_mipmaps()));
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*p_img = Image(p_img->get_width(), p_img->get_height(), p_img->has_mipmaps(), Image::FORMAT_RGB8, dst);
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if (p_img->has_mipmaps())
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p_img->generate_mipmaps();
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}
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static void _compress_etc(Image *p_img) {
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Image img = *p_img;
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int imgw = img.get_width(), imgh = img.get_height();
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ERR_FAIL_COND(nearest_power_of_2(imgw) != imgw || nearest_power_of_2(imgh) != imgh);
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if (img.get_format() != Image::FORMAT_RGB8)
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img.convert(Image::FORMAT_RGB8);
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PoolVector<uint8_t> res_data;
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PoolVector<uint8_t> dst_data;
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PoolVector<uint8_t>::Read r = img.get_data().read();
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int target_size = Image::get_image_data_size(p_img->get_width(), p_img->get_height(), Image::FORMAT_ETC, p_img->has_mipmaps() ? -1 : 0);
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int mmc = p_img->has_mipmaps() ? Image::get_image_required_mipmaps(p_img->get_width(), p_img->get_height(), Image::FORMAT_ETC) : 0;
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dst_data.resize(target_size);
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int mc = 0;
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int ofs = 0;
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PoolVector<uint8_t>::Write w = dst_data.write();
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rg_etc1::etc1_pack_params pp;
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pp.m_quality = rg_etc1::cLowQuality;
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for (int i = 0; i <= mmc; i++) {
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int bw = MAX(imgw / 4, 1);
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int bh = MAX(imgh / 4, 1);
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const uint8_t *src = &r[img.get_mipmap_offset(i)];
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int mmsize = MAX(bw, 1) * MAX(bh, 1) * 8;
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uint8_t *dst = &w[ofs];
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ofs += mmsize;
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//print_line("bh: "+itos(bh)+" bw: "+itos(bw));
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for (int y = 0; y < bh; y++) {
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for (int x = 0; x < bw; x++) {
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//print_line("x: "+itos(x)+" y: "+itos(y));
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uint8_t block[4 * 4 * 4];
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zeromem(block, 4 * 4 * 4);
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uint8_t cblock[8];
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int maxy = MIN(imgh, 4);
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int maxx = MIN(imgw, 4);
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for (int yy = 0; yy < maxy; yy++) {
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for (int xx = 0; xx < maxx; xx++) {
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uint32_t dst_ofs = (yy * 4 + xx) * 4;
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uint32_t src_ofs = ((y * 4 + yy) * imgw + x * 4 + xx) * 3;
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block[dst_ofs + 0] = src[src_ofs + 0];
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block[dst_ofs + 1] = src[src_ofs + 1];
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block[dst_ofs + 2] = src[src_ofs + 2];
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block[dst_ofs + 3] = 255;
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}
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}
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rg_etc1::pack_etc1_block(cblock, (const unsigned int *)block, pp);
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for (int j = 0; j < 8; j++) {
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dst[j] = cblock[j];
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}
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dst += 8;
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}
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}
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imgw = MAX(1, imgw / 2);
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imgh = MAX(1, imgh / 2);
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mc++;
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}
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*p_img = Image(p_img->get_width(), p_img->get_height(), (mc - 1) ? true : false, Image::FORMAT_ETC, dst_data);
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}
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void _register_etc1_compress_func() {
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rg_etc1::pack_etc1_block_init();
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Image::_image_compress_etc_func = _compress_etc;
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Image::_image_decompress_etc = _decompress_etc;
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}
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