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Diffstat (limited to 'modules/webp/image_loader_webp.cpp')
| -rw-r--r-- | modules/webp/image_loader_webp.cpp | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/modules/webp/image_loader_webp.cpp b/modules/webp/image_loader_webp.cpp new file mode 100644 index 0000000000..0fe2db3261 --- /dev/null +++ b/modules/webp/image_loader_webp.cpp @@ -0,0 +1,183 @@ +/*************************************************************************/ +/* image_loader_webp.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* http://www.godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */ +/* */ +/* 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_loader_webp.h" + +#include "io/marshalls.h" +#include "print_string.h" +#include "os/os.h" + +#include <stdlib.h> +#include <webp/decode.h> +#include <webp/encode.h> + +static DVector<uint8_t> _webp_lossy_pack(const Image& p_image,float p_quality) { + + ERR_FAIL_COND_V(p_image.empty(),DVector<uint8_t>()); + + Image img=p_image; + if (img.detect_alpha()) + img.convert(Image::FORMAT_RGBA); + else + img.convert(Image::FORMAT_RGB); + + Size2 s(img.get_width(),img.get_height()); + DVector<uint8_t> data = img.get_data(); + DVector<uint8_t>::Read r = data.read(); + + uint8_t *dst_buff=NULL; + size_t dst_size=0; + if (img.get_format()==Image::FORMAT_RGB) { + + dst_size = WebPEncodeRGB(r.ptr(),s.width,s.height,3*s.width,CLAMP(p_quality*100.0,0,100.0),&dst_buff); + } else { + dst_size = WebPEncodeRGBA(r.ptr(),s.width,s.height,4*s.width,CLAMP(p_quality*100.0,0,100.0),&dst_buff); + } + + ERR_FAIL_COND_V(dst_size==0,DVector<uint8_t>()); + DVector<uint8_t> dst; + dst.resize(4+dst_size); + DVector<uint8_t>::Write w = dst.write(); + w[0]='W'; + w[1]='E'; + w[2]='B'; + w[3]='P'; + copymem(&w[4],dst_buff,dst_size); + free(dst_buff); + w=DVector<uint8_t>::Write(); + return dst; +} + +static Image _webp_lossy_unpack(const DVector<uint8_t>& p_buffer) { + + int size = p_buffer.size()-4; + ERR_FAIL_COND_V(size<=0,Image()); + DVector<uint8_t>::Read r = p_buffer.read(); + + ERR_FAIL_COND_V(r[0]!='W' || r[1]!='E' || r[2]!='B' || r[3]!='P',Image()); + WebPBitstreamFeatures features; + if (WebPGetFeatures(&r[4],size,&features)!=VP8_STATUS_OK) { + ERR_EXPLAIN("Error unpacking WEBP image:"); + ERR_FAIL_V(Image()); + } + + //print_line("width: "+itos(features.width)); + //print_line("height: "+itos(features.height)); + //print_line("alpha: "+itos(features.has_alpha)); + + DVector<uint8_t> dst_image; + int datasize = features.width*features.height*(features.has_alpha?4:3); + dst_image.resize(datasize); + + DVector<uint8_t>::Write dst_w = dst_image.write(); + + bool errdec=false; + if (features.has_alpha) { + errdec = WebPDecodeRGBAInto(&r[4],size,dst_w.ptr(),datasize,4*features.width)==NULL; + } else { + errdec = WebPDecodeRGBInto(&r[4],size,dst_w.ptr(),datasize,3*features.width)==NULL; + + } + + //ERR_EXPLAIN("Error decoding webp! - "+p_file); + ERR_FAIL_COND_V(errdec,Image()); + + dst_w = DVector<uint8_t>::Write(); + + return Image(features.width,features.height,0,features.has_alpha?Image::FORMAT_RGBA:Image::FORMAT_RGB,dst_image); + +} + + +Error ImageLoaderWEBP::load_image(Image *p_image,FileAccess *f) { + + + uint32_t size = f->get_len(); + DVector<uint8_t> src_image; + src_image.resize(size); + + WebPBitstreamFeatures features; + + DVector<uint8_t>::Write src_w = src_image.write(); + f->get_buffer(src_w.ptr(),size); + ERR_FAIL_COND_V(f->eof_reached(), ERR_FILE_EOF); + + if (WebPGetFeatures(src_w.ptr(),size,&features)!=VP8_STATUS_OK) { + f->close(); + //ERR_EXPLAIN("Error decoding WEBP image: "+p_file); + ERR_FAIL_V(ERR_FILE_CORRUPT); + } + + print_line("width: "+itos(features.width)); + print_line("height: "+itos(features.height)); + print_line("alpha: "+itos(features.has_alpha)); + + src_w = DVector<uint8_t>::Write(); + + DVector<uint8_t> dst_image; + int datasize = features.width*features.height*(features.has_alpha?4:3); + dst_image.resize(datasize); + + DVector<uint8_t>::Read src_r = src_image.read(); + DVector<uint8_t>::Write dst_w = dst_image.write(); + + + bool errdec=false; + if (features.has_alpha) { + errdec = WebPDecodeRGBAInto(src_r.ptr(),size,dst_w.ptr(),datasize,4*features.width)==NULL; + } else { + errdec = WebPDecodeRGBInto(src_r.ptr(),size,dst_w.ptr(),datasize,3*features.width)==NULL; + + } + + //ERR_EXPLAIN("Error decoding webp! - "+p_file); + ERR_FAIL_COND_V(errdec,ERR_FILE_CORRUPT); + + src_r = DVector<uint8_t>::Read(); + dst_w = DVector<uint8_t>::Write(); + + *p_image = Image(features.width,features.height,0,features.has_alpha?Image::FORMAT_RGBA:Image::FORMAT_RGB,dst_image); + + + return OK; + +} + +void ImageLoaderWEBP::get_recognized_extensions(List<String> *p_extensions) const { + + p_extensions->push_back("webp"); +} + + +ImageLoaderWEBP::ImageLoaderWEBP() { + + Image::lossy_packer=_webp_lossy_pack; + Image::lossy_unpacker=_webp_lossy_unpack; +} + + |