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-rw-r--r--modules/etc1/image_etc.cpp183
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diff --git a/modules/etc1/image_etc.cpp b/modules/etc1/image_etc.cpp
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-/*************************************************************************/
-/* image_etc.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 "image_etc.h"
-#include "image.h"
-#include "os/copymem.h"
-#include "print_string.h"
-#include "rg_etc1.h"
-static void _decompress_etc(Image *p_img) {
-
- ERR_FAIL_COND(p_img->get_format() != Image::FORMAT_ETC);
-
- int imgw = p_img->get_width();
- int imgh = p_img->get_height();
- PoolVector<uint8_t> src = p_img->get_data();
- PoolVector<uint8_t> dst;
-
- PoolVector<uint8_t>::Read r = src.read();
-
- int mmc = p_img->get_mipmap_count();
-
- for (int i = 0; i <= mmc; i++) {
-
- dst.resize(dst.size() + imgw * imgh * 3);
- const uint8_t *srcbr = &r[p_img->get_mipmap_offset(i)];
- PoolVector<uint8_t>::Write w = dst.write();
-
- uint8_t *wptr = &w[dst.size() - imgw * imgh * 3];
-
- int bw = MAX(imgw / 4, 1);
- int bh = MAX(imgh / 4, 1);
-
- for (int y = 0; y < bh; y++) {
-
- for (int x = 0; x < bw; x++) {
-
- uint8_t block[4 * 4 * 4];
-
- rg_etc1::unpack_etc1_block(srcbr, (unsigned int *)block);
- srcbr += 8;
-
- int maxx = MIN(imgw, 4);
- int maxy = MIN(imgh, 4);
-
- for (int yy = 0; yy < maxy; yy++) {
-
- for (int xx = 0; xx < maxx; xx++) {
-
- uint32_t src_ofs = (yy * 4 + xx) * 4;
- uint32_t dst_ofs = ((y * 4 + yy) * imgw + x * 4 + xx) * 3;
- wptr[dst_ofs + 0] = block[src_ofs + 0];
- wptr[dst_ofs + 1] = block[src_ofs + 1];
- wptr[dst_ofs + 2] = block[src_ofs + 2];
- }
- }
- }
- }
-
- imgw = MAX(1, imgw / 2);
- imgh = MAX(1, imgh / 2);
- }
-
- r = PoolVector<uint8_t>::Read();
- //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()));
- bool needs_mipmaps = p_img->has_mipmaps();
- p_img->create(p_img->get_width(), p_img->get_height(), p_img->has_mipmaps(), Image::FORMAT_RGB8, dst);
- if (needs_mipmaps)
- p_img->generate_mipmaps();
-}
-
-static void _compress_etc(Image *p_img) {
-
- Ref<Image> img = p_img->duplicate();
-
- int imgw = img->get_width(), imgh = img->get_height();
-
- ERR_FAIL_COND(nearest_power_of_2(imgw) != imgw || nearest_power_of_2(imgh) != imgh);
-
- if (img->get_format() != Image::FORMAT_RGB8)
- img->convert(Image::FORMAT_RGB8);
-
- PoolVector<uint8_t> res_data;
- PoolVector<uint8_t> dst_data;
- PoolVector<uint8_t>::Read r = img->get_data().read();
-
- 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);
- int mmc = p_img->has_mipmaps() ? Image::get_image_required_mipmaps(p_img->get_width(), p_img->get_height(), Image::FORMAT_ETC) : 0;
-
- dst_data.resize(target_size);
- int mc = 0;
- int ofs = 0;
- PoolVector<uint8_t>::Write w = dst_data.write();
-
- rg_etc1::etc1_pack_params pp;
- pp.m_quality = rg_etc1::cLowQuality;
- for (int i = 0; i <= mmc; i++) {
-
- int bw = MAX(imgw / 4, 1);
- int bh = MAX(imgh / 4, 1);
- const uint8_t *src = &r[img->get_mipmap_offset(i)];
- int mmsize = MAX(bw, 1) * MAX(bh, 1) * 8;
-
- uint8_t *dst = &w[ofs];
- ofs += mmsize;
-
- //print_line("bh: "+itos(bh)+" bw: "+itos(bw));
-
- for (int y = 0; y < bh; y++) {
-
- for (int x = 0; x < bw; x++) {
-
- //print_line("x: "+itos(x)+" y: "+itos(y));
-
- uint8_t block[4 * 4 * 4];
- zeromem(block, 4 * 4 * 4);
- uint8_t cblock[8];
-
- int maxy = MIN(imgh, 4);
- int maxx = MIN(imgw, 4);
-
- for (int yy = 0; yy < maxy; yy++) {
-
- for (int xx = 0; xx < maxx; xx++) {
-
- uint32_t dst_ofs = (yy * 4 + xx) * 4;
- uint32_t src_ofs = ((y * 4 + yy) * imgw + x * 4 + xx) * 3;
- block[dst_ofs + 0] = src[src_ofs + 0];
- block[dst_ofs + 1] = src[src_ofs + 1];
- block[dst_ofs + 2] = src[src_ofs + 2];
- block[dst_ofs + 3] = 255;
- }
- }
-
- rg_etc1::pack_etc1_block(cblock, (const unsigned int *)block, pp);
- for (int j = 0; j < 8; j++) {
-
- dst[j] = cblock[j];
- }
-
- dst += 8;
- }
- }
-
- imgw = MAX(1, imgw / 2);
- imgh = MAX(1, imgh / 2);
- mc++;
- }
-
- p_img->create(p_img->get_width(), p_img->get_height(), (mc - 1) ? true : false, Image::FORMAT_ETC, dst_data);
-}
-
-void _register_etc1_compress_func() {
-
- rg_etc1::pack_etc1_block_init();
- Image::_image_compress_etc_func = _compress_etc;
- Image::_image_decompress_etc = _decompress_etc;
-}