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183 lines
6.1 KiB
C++
183 lines
6.1 KiB
C++
/*************************************************************************/
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/* image_loader_webp.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) 2007-2016 Juan Linietsky, Ariel Manzur. */
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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_webp.h"
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#include "print_string.h"
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#include "os/os.h"
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#include "drivers/webp/decode.h"
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#include "drivers/webp/encode.h"
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#include "io/marshalls.h"
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#include <stdlib.h>
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static DVector<uint8_t> _webp_lossy_pack(const Image& p_image,float p_quality) {
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ERR_FAIL_COND_V(p_image.empty(),DVector<uint8_t>());
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Image img=p_image;
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if (img.detect_alpha())
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img.convert(Image::FORMAT_RGBA);
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else
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img.convert(Image::FORMAT_RGB);
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Size2 s(img.get_width(),img.get_height());
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DVector<uint8_t> data = img.get_data();
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DVector<uint8_t>::Read r = data.read();
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uint8_t *dst_buff=NULL;
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size_t dst_size=0;
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if (img.get_format()==Image::FORMAT_RGB) {
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dst_size = WebPEncodeRGB(r.ptr(),s.width,s.height,3*s.width,CLAMP(p_quality*100.0,0,100.0),&dst_buff);
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} else {
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dst_size = WebPEncodeRGBA(r.ptr(),s.width,s.height,4*s.width,CLAMP(p_quality*100.0,0,100.0),&dst_buff);
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}
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ERR_FAIL_COND_V(dst_size==0,DVector<uint8_t>());
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DVector<uint8_t> dst;
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dst.resize(4+dst_size);
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DVector<uint8_t>::Write w = dst.write();
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w[0]='W';
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w[1]='E';
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w[2]='B';
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w[3]='P';
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copymem(&w[4],dst_buff,dst_size);
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free(dst_buff);
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w=DVector<uint8_t>::Write();
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return dst;
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}
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static Image _webp_lossy_unpack(const DVector<uint8_t>& p_buffer) {
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int size = p_buffer.size()-4;
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ERR_FAIL_COND_V(size<=0,Image());
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DVector<uint8_t>::Read r = p_buffer.read();
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ERR_FAIL_COND_V(r[0]!='W' || r[1]!='E' || r[2]!='B' || r[3]!='P',Image());
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WebPBitstreamFeatures features;
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if (WebPGetFeatures(&r[4],size,&features)!=VP8_STATUS_OK) {
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ERR_EXPLAIN("Error unpacking WEBP image:");
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ERR_FAIL_V(Image());
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}
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//print_line("width: "+itos(features.width));
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//print_line("height: "+itos(features.height));
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//print_line("alpha: "+itos(features.has_alpha));
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DVector<uint8_t> dst_image;
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int datasize = features.width*features.height*(features.has_alpha?4:3);
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dst_image.resize(datasize);
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DVector<uint8_t>::Write dst_w = dst_image.write();
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bool errdec=false;
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if (features.has_alpha) {
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errdec = WebPDecodeRGBAInto(&r[4],size,dst_w.ptr(),datasize,4*features.width)==NULL;
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} else {
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errdec = WebPDecodeRGBInto(&r[4],size,dst_w.ptr(),datasize,3*features.width)==NULL;
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}
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//ERR_EXPLAIN("Error decoding webp! - "+p_file);
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ERR_FAIL_COND_V(errdec,Image());
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dst_w = DVector<uint8_t>::Write();
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return Image(features.width,features.height,0,features.has_alpha?Image::FORMAT_RGBA:Image::FORMAT_RGB,dst_image);
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}
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Error ImageLoaderWEBP::load_image(Image *p_image,FileAccess *f) {
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uint32_t size = f->get_len();
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DVector<uint8_t> src_image;
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src_image.resize(size);
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WebPBitstreamFeatures features;
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DVector<uint8_t>::Write src_w = src_image.write();
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f->get_buffer(src_w.ptr(),size);
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ERR_FAIL_COND_V(f->eof_reached(), ERR_FILE_EOF);
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if (WebPGetFeatures(src_w.ptr(),size,&features)!=VP8_STATUS_OK) {
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f->close();
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//ERR_EXPLAIN("Error decoding WEBP image: "+p_file);
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ERR_FAIL_V(ERR_FILE_CORRUPT);
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}
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print_line("width: "+itos(features.width));
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print_line("height: "+itos(features.height));
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print_line("alpha: "+itos(features.has_alpha));
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src_w = DVector<uint8_t>::Write();
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DVector<uint8_t> dst_image;
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int datasize = features.width*features.height*(features.has_alpha?4:3);
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dst_image.resize(datasize);
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DVector<uint8_t>::Read src_r = src_image.read();
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DVector<uint8_t>::Write dst_w = dst_image.write();
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bool errdec=false;
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if (features.has_alpha) {
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errdec = WebPDecodeRGBAInto(src_r.ptr(),size,dst_w.ptr(),datasize,4*features.width)==NULL;
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} else {
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errdec = WebPDecodeRGBInto(src_r.ptr(),size,dst_w.ptr(),datasize,3*features.width)==NULL;
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}
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//ERR_EXPLAIN("Error decoding webp! - "+p_file);
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ERR_FAIL_COND_V(errdec,ERR_FILE_CORRUPT);
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src_r = DVector<uint8_t>::Read();
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dst_w = DVector<uint8_t>::Write();
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*p_image = Image(features.width,features.height,0,features.has_alpha?Image::FORMAT_RGBA:Image::FORMAT_RGB,dst_image);
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return OK;
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}
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void ImageLoaderWEBP::get_recognized_extensions(List<String> *p_extensions) const {
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p_extensions->push_back("webp");
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}
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ImageLoaderWEBP::ImageLoaderWEBP() {
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Image::lossy_packer=_webp_lossy_pack;
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Image::lossy_unpacker=_webp_lossy_unpack;
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}
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