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Add support for saving WebP images

This commit is contained in:
Aaron Franke 2022-06-04 16:05:55 -05:00
parent fdfbaf9f0f
commit 8f05bd97b5
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GPG Key ID: 40A1750B977E56BF
10 changed files with 441 additions and 177 deletions
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23
core/io/image.cpp
View File

@ -87,6 +87,9 @@ SaveEXRFunc Image::save_exr_func = nullptr;
SavePNGBufferFunc Image::save_png_buffer_func = nullptr;
SaveJPGBufferFunc Image::save_jpg_buffer_func = nullptr;
SaveWebPFunc Image::save_webp_func = nullptr;
SaveWebPBufferFunc Image::save_webp_buffer_func = nullptr;
void Image::_put_pixelb(int p_x, int p_y, uint32_t p_pixel_size, uint8_t *p_data, const uint8_t *p_pixel) {
uint32_t ofs = (p_y * width + p_x) * p_pixel_size;
memcpy(p_data + ofs, p_pixel, p_pixel_size);
@ -2320,6 +2323,24 @@ Error Image::save_exr(const String &p_path, bool p_grayscale) const {
return save_exr_func(p_path, Ref<Image>((Image *)this), p_grayscale);
}
Error Image::save_webp(const String &p_path, const bool p_lossy, const float p_quality) const {
if (save_webp_func == nullptr) {
return ERR_UNAVAILABLE;
}
ERR_FAIL_COND_V_MSG(p_lossy && !(0.0f <= p_quality && p_quality <= 1.0f), ERR_INVALID_PARAMETER, "The WebP lossy quality was set to " + rtos(p_quality) + ", which is not valid. WebP lossy quality must be between 0.0 and 1.0 (inclusive).");
return save_webp_func(p_path, Ref<Image>((Image *)this), p_lossy, p_quality);
}
Vector<uint8_t> Image::save_webp_to_buffer(const bool p_lossy, const float p_quality) const {
if (save_webp_buffer_func == nullptr) {
return Vector<uint8_t>();
}
ERR_FAIL_COND_V_MSG(p_lossy && !(0.0f <= p_quality && p_quality <= 1.0f), Vector<uint8_t>(), "The WebP lossy quality was set to " + rtos(p_quality) + ", which is not valid. WebP lossy quality must be between 0.0 and 1.0 (inclusive).");
return save_webp_buffer_func(Ref<Image>((Image *)this), p_lossy, p_quality);
}
int Image::get_image_data_size(int p_width, int p_height, Format p_format, bool p_mipmaps) {
int mm;
return _get_dst_image_size(p_width, p_height, p_format, mm, p_mipmaps ? -1 : 0);
@ -3159,6 +3180,8 @@ void Image::_bind_methods() {
ClassDB::bind_method(D_METHOD("save_jpg", "path", "quality"), &Image::save_jpg, DEFVAL(0.75));
ClassDB::bind_method(D_METHOD("save_jpg_to_buffer", "quality"), &Image::save_jpg_to_buffer, DEFVAL(0.75));
ClassDB::bind_method(D_METHOD("save_exr", "path", "grayscale"), &Image::save_exr, DEFVAL(false));
ClassDB::bind_method(D_METHOD("save_webp", "path", "lossy", "quality"), &Image::save_webp, DEFVAL(false), DEFVAL(0.75f));
ClassDB::bind_method(D_METHOD("save_webp_to_buffer", "lossy", "quality"), &Image::save_webp_to_buffer, DEFVAL(false), DEFVAL(0.75f));
ClassDB::bind_method(D_METHOD("detect_alpha"), &Image::detect_alpha);
ClassDB::bind_method(D_METHOD("is_invisible"), &Image::is_invisible);

6
core/io/image.h
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@ -48,6 +48,8 @@ typedef Vector<uint8_t> (*SavePNGBufferFunc)(const Ref<Image> &p_img);
typedef Error (*SaveJPGFunc)(const String &p_path, const Ref<Image> &p_img, float p_quality);
typedef Vector<uint8_t> (*SaveJPGBufferFunc)(const Ref<Image> &p_img, float p_quality);
typedef Ref<Image> (*ImageMemLoadFunc)(const uint8_t *p_png, int p_size);
typedef Error (*SaveWebPFunc)(const String &p_path, const Ref<Image> &p_img, const bool p_lossy, const float p_quality);
typedef Vector<uint8_t> (*SaveWebPBufferFunc)(const Ref<Image> &p_img, const bool p_lossy, const float p_quality);
typedef Error (*SaveEXRFunc)(const String &p_path, const Ref<Image> &p_img, bool p_grayscale);
@ -60,6 +62,8 @@ public:
static SaveEXRFunc save_exr_func;
static SavePNGBufferFunc save_png_buffer_func;
static SaveJPGBufferFunc save_jpg_buffer_func;
static SaveWebPFunc save_webp_func;
static SaveWebPBufferFunc save_webp_buffer_func;
enum {
MAX_WIDTH = (1 << 24), // force a limit somehow
@ -289,6 +293,8 @@ public:
Vector<uint8_t> save_png_to_buffer() const;
Vector<uint8_t> save_jpg_to_buffer(float p_quality = 0.75) const;
Error save_exr(const String &p_path, bool p_grayscale) const;
Error save_webp(const String &p_path, const bool p_lossy = false, const float p_quality = 0.75f) const;
Vector<uint8_t> save_webp_to_buffer(const bool p_lossy = false, const float p_quality = 0.75f) const;
void create_empty(int p_width, int p_height, bool p_use_mipmaps, Format p_format) {
create(p_width, p_height, p_use_mipmaps, p_format);

20
doc/classes/Image.xml
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@ -397,12 +397,30 @@
<return type="int" enum="Error" />
<argument index="0" name="path" type="String" />
<description>
Saves the image as a PNG file to [code]path[/code].
Saves the image as a PNG file to the file at [code]path[/code].
</description>
</method>
<method name="save_png_to_buffer" qualifiers="const">
<return type="PackedByteArray" />
<description>
Saves the image as a PNG file to a byte array.
</description>
</method>
<method name="save_webp" qualifiers="const">
<return type="int" enum="Error" />
<argument index="0" name="path" type="String" />
<argument index="1" name="lossy" type="bool" default="false" />
<argument index="2" name="quality" type="float" default="0.75" />
<description>
Saves the image as a WebP (Web Picture) file to the file at [code]path[/code]. By default it will save lossless. If [code]lossy[/code] is true, the image will be saved lossy, using the [code]quality[/code] setting between 0.0 and 1.0 (inclusive).
</description>
</method>
<method name="save_webp_to_buffer" qualifiers="const">
<return type="PackedByteArray" />
<argument index="0" name="lossy" type="bool" default="false" />
<argument index="1" name="quality" type="float" default="0.75" />
<description>
Saves the image as a WebP (Web Picture) file to a byte array. By default it will save lossless. If [code]lossy[/code] is true, the image will be saved lossy, using the [code]quality[/code] setting between 0.0 and 1.0 (inclusive).
</description>
</method>
<method name="set_pixel">

181
modules/webp/image_loader_webp.cpp
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@ -34,184 +34,21 @@
#include "core/io/marshalls.h"
#include "core/os/os.h"
#include "core/string/print_string.h"
#include "webp_common.h"
#include <stdlib.h>
#include <webp/decode.h>
#include <webp/encode.h>
static Vector<uint8_t> _webp_lossy_pack(const Ref<Image> &p_image, float p_quality) {
ERR_FAIL_COND_V(p_image.is_null() || p_image->is_empty(), Vector<uint8_t>());
Ref<Image> img = p_image->duplicate();
if (img->detect_alpha()) {
img->convert(Image::FORMAT_RGBA8);
} else {
img->convert(Image::FORMAT_RGB8);
}
Size2 s(img->get_width(), img->get_height());
Vector<uint8_t> data = img->get_data();
const uint8_t *r = data.ptr();
uint8_t *dst_buff = nullptr;
size_t dst_size = 0;
if (img->get_format() == Image::FORMAT_RGB8) {
dst_size = WebPEncodeRGB(r, s.width, s.height, 3 * s.width, CLAMP(p_quality * 100.0, 0, 100.0), &dst_buff);
} else {
dst_size = WebPEncodeRGBA(r, s.width, s.height, 4 * s.width, CLAMP(p_quality * 100.0, 0, 100.0), &dst_buff);
}
ERR_FAIL_COND_V(dst_size == 0, Vector<uint8_t>());
Vector<uint8_t> dst;
dst.resize(4 + dst_size);
uint8_t *w = dst.ptrw();
w[0] = 'W';
w[1] = 'E';
w[2] = 'B';
w[3] = 'P';
memcpy(&w[4], dst_buff, dst_size);
WebPFree(dst_buff);
return dst;
}
static Vector<uint8_t> _webp_lossless_pack(const Ref<Image> &p_image) {
ERR_FAIL_COND_V(p_image.is_null() || p_image->is_empty(), Vector<uint8_t>());
int compression_level = ProjectSettings::get_singleton()->get("rendering/textures/lossless_compression/webp_compression_level");
compression_level = CLAMP(compression_level, 0, 9);
Ref<Image> img = p_image->duplicate();
if (img->detect_alpha()) {
img->convert(Image::FORMAT_RGBA8);
} else {
img->convert(Image::FORMAT_RGB8);
}
Size2 s(img->get_width(), img->get_height());
Vector<uint8_t> data = img->get_data();
const uint8_t *r = data.ptr();
// we need to use the more complex API in order to access the 'exact' flag...
WebPConfig config;
WebPPicture pic;
if (!WebPConfigInit(&config) || !WebPConfigLosslessPreset(&config, compression_level) || !WebPPictureInit(&pic)) {
ERR_FAIL_V(Vector<uint8_t>());
}
WebPMemoryWriter wrt;
config.exact = 1;
pic.use_argb = 1;
pic.width = s.width;
pic.height = s.height;
pic.writer = WebPMemoryWrite;
pic.custom_ptr = &wrt;
WebPMemoryWriterInit(&wrt);
bool success_import = false;
if (img->get_format() == Image::FORMAT_RGB8) {
success_import = WebPPictureImportRGB(&pic, r, 3 * s.width);
} else {
success_import = WebPPictureImportRGBA(&pic, r, 4 * s.width);
}
bool success_encode = false;
if (success_import) {
success_encode = WebPEncode(&config, &pic);
}
WebPPictureFree(&pic);
if (!success_encode) {
WebPMemoryWriterClear(&wrt);
ERR_FAIL_V_MSG(Vector<uint8_t>(), "WebP packing failed.");
}
// copy from wrt
Vector<uint8_t> dst;
dst.resize(4 + wrt.size);
uint8_t *w = dst.ptrw();
w[0] = 'W';
w[1] = 'E';
w[2] = 'B';
w[3] = 'P';
memcpy(&w[4], wrt.mem, wrt.size);
WebPMemoryWriterClear(&wrt);
return dst;
}
static Ref<Image> _webp_unpack(const Vector<uint8_t> &p_buffer) {
int size = p_buffer.size() - 4;
ERR_FAIL_COND_V(size <= 0, Ref<Image>());
const uint8_t *r = p_buffer.ptr();
ERR_FAIL_COND_V(r[0] != 'W' || r[1] != 'E' || r[2] != 'B' || r[3] != 'P', Ref<Image>());
WebPBitstreamFeatures features;
if (WebPGetFeatures(&r[4], size, &features) != VP8_STATUS_OK) {
ERR_FAIL_V_MSG(Ref<Image>(), "Error unpacking WEBP image.");
}
/*
print_line("width: "+itos(features.width));
print_line("height: "+itos(features.height));
print_line("alpha: "+itos(features.has_alpha));
*/
Vector<uint8_t> dst_image;
int datasize = features.width * features.height * (features.has_alpha ? 4 : 3);
dst_image.resize(datasize);
uint8_t *dst_w = dst_image.ptrw();
bool errdec = false;
if (features.has_alpha) {
errdec = WebPDecodeRGBAInto(&r[4], size, dst_w, datasize, 4 * features.width) == nullptr;
} else {
errdec = WebPDecodeRGBInto(&r[4], size, dst_w, datasize, 3 * features.width) == nullptr;
}
ERR_FAIL_COND_V_MSG(errdec, Ref<Image>(), "Failed decoding WebP image.");
Ref<Image> img = memnew(Image(features.width, features.height, 0, features.has_alpha ? Image::FORMAT_RGBA8 : Image::FORMAT_RGB8, dst_image));
return img;
}
Error webp_load_image_from_buffer(Image *p_image, const uint8_t *p_buffer, int p_buffer_len) {
ERR_FAIL_NULL_V(p_image, ERR_INVALID_PARAMETER);
WebPBitstreamFeatures features;
if (WebPGetFeatures(p_buffer, p_buffer_len, &features) != VP8_STATUS_OK) {
ERR_FAIL_V(ERR_FILE_CORRUPT);
}
Vector<uint8_t> dst_image;
int datasize = features.width * features.height * (features.has_alpha ? 4 : 3);
dst_image.resize(datasize);
uint8_t *dst_w = dst_image.ptrw();
bool errdec = false;
if (features.has_alpha) {
errdec = WebPDecodeRGBAInto(p_buffer, p_buffer_len, dst_w, datasize, 4 * features.width) == nullptr;
} else {
errdec = WebPDecodeRGBInto(p_buffer, p_buffer_len, dst_w, datasize, 3 * features.width) == nullptr;
}
ERR_FAIL_COND_V_MSG(errdec, ERR_FILE_CORRUPT, "Failed decoding WebP image.");
p_image->create(features.width, features.height, false, features.has_alpha ? Image::FORMAT_RGBA8 : Image::FORMAT_RGB8, dst_image);
return OK;
}
static Ref<Image> _webp_mem_loader_func(const uint8_t *p_png, int p_size) {
Ref<Image> img;
img.instantiate();
Error err = webp_load_image_from_buffer(img.ptr(), p_png, p_size);
Error err = WebPCommon::webp_load_image_from_buffer(img.ptr(), p_png, p_size);
ERR_FAIL_COND_V(err, Ref<Image>());
return img;
}
Error ImageLoaderWEBP::load_image(Ref<Image> p_image, Ref<FileAccess> f, bool p_force_linear, float p_scale) {
Error ImageLoaderWebP::load_image(Ref<Image> p_image, Ref<FileAccess> f, bool p_force_linear, float p_scale) {
Vector<uint8_t> src_image;
uint64_t src_image_len = f->get_length();
ERR_FAIL_COND_V(src_image_len == 0, ERR_FILE_CORRUPT);
@ -221,18 +58,18 @@ Error ImageLoaderWEBP::load_image(Ref<Image> p_image, Ref<FileAccess> f, bool p_
f->get_buffer(&w[0], src_image_len);
Error err = webp_load_image_from_buffer(p_image.ptr(), w, src_image_len);
Error err = WebPCommon::webp_load_image_from_buffer(p_image.ptr(), w, src_image_len);
return err;
}
void ImageLoaderWEBP::get_recognized_extensions(List<String> *p_extensions) const {
void ImageLoaderWebP::get_recognized_extensions(List<String> *p_extensions) const {
p_extensions->push_back("webp");
}
ImageLoaderWEBP::ImageLoaderWEBP() {
ImageLoaderWebP::ImageLoaderWebP() {
Image::_webp_mem_loader_func = _webp_mem_loader_func;
Image::webp_lossy_packer = _webp_lossy_pack;
Image::webp_lossless_packer = _webp_lossless_pack;
Image::webp_unpacker = _webp_unpack;
Image::webp_lossy_packer = WebPCommon::_webp_lossy_pack;
Image::webp_lossless_packer = WebPCommon::_webp_lossless_pack;
Image::webp_unpacker = WebPCommon::_webp_unpack;
}

4
modules/webp/image_loader_webp.h
View File

@ -33,11 +33,11 @@
#include "core/io/image_loader.h"
class ImageLoaderWEBP : public ImageFormatLoader {
class ImageLoaderWebP : public ImageFormatLoader {
public:
virtual Error load_image(Ref<Image> p_image, Ref<FileAccess> f, bool p_force_linear, float p_scale);
virtual void get_recognized_extensions(List<String> *p_extensions) const;
ImageLoaderWEBP();
ImageLoaderWebP();
};
#endif

10
modules/webp/register_types.cpp
View File

@ -31,16 +31,20 @@
#include "register_types.h"
#include "image_loader_webp.h"
#include "resource_saver_webp.h"
static ImageLoaderWEBP *image_loader_webp = nullptr;
static ImageLoaderWebP *image_loader_webp = nullptr;
static Ref<ResourceSaverWebP> resource_saver_webp;
void initialize_webp_module(ModuleInitializationLevel p_level) {
if (p_level != MODULE_INITIALIZATION_LEVEL_SCENE) {
return;
}
image_loader_webp = memnew(ImageLoaderWEBP);
image_loader_webp = memnew(ImageLoaderWebP);
resource_saver_webp.instantiate();
ImageLoader::add_image_format_loader(image_loader_webp);
ResourceSaver::add_resource_format_saver(resource_saver_webp);
}
void uninitialize_webp_module(ModuleInitializationLevel p_level) {
@ -49,4 +53,6 @@ void uninitialize_webp_module(ModuleInitializationLevel p_level) {
}
memdelete(image_loader_webp);
ResourceSaver::remove_resource_format_saver(resource_saver_webp);
resource_saver_webp.unref();
}

90
modules/webp/resource_saver_webp.cpp Normal file
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@ -0,0 +1,90 @@
/*************************************************************************/
/* resource_saver_webp.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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 "resource_saver_webp.h"
#include "core/io/file_access.h"
#include "core/io/image.h"
#include "scene/resources/texture.h"
#include "webp_common.h"
Error ResourceSaverWebP::save(const String &p_path, const Ref<Resource> &p_resource, uint32_t p_flags) {
Ref<ImageTexture> texture = p_resource;
ERR_FAIL_COND_V_MSG(!texture.is_valid(), ERR_INVALID_PARAMETER, "Can't save invalid texture as WEBP.");
ERR_FAIL_COND_V_MSG(!texture->get_width(), ERR_INVALID_PARAMETER, "Can't save empty texture as WEBP.");
Ref<Image> img = texture->get_image();
Error err = save_image(p_path, img);
return err;
}
Error ResourceSaverWebP::save_image(const String &p_path, const Ref<Image> &p_img, const bool p_lossy, const float p_quality) {
Vector<uint8_t> buffer = save_image_to_buffer(p_img, p_lossy, p_quality);
Error err;
Ref<FileAccess> file = FileAccess::open(p_path, FileAccess::WRITE, &err);
ERR_FAIL_COND_V_MSG(err, err, vformat("Can't save WEBP at path: '%s'.", p_path));
const uint8_t *reader = buffer.ptr();
file->store_buffer(reader, buffer.size());
if (file->get_error() != OK && file->get_error() != ERR_FILE_EOF) {
return ERR_CANT_CREATE;
}
return OK;
}
Vector<uint8_t> ResourceSaverWebP::save_image_to_buffer(const Ref<Image> &p_img, const bool p_lossy, const float p_quality) {
Vector<uint8_t> buffer;
if (p_lossy) {
buffer = WebPCommon::_webp_lossy_pack(p_img, p_quality);
} else {
buffer = WebPCommon::_webp_lossless_pack(p_img);
}
return buffer;
}
bool ResourceSaverWebP::recognize(const Ref<Resource> &p_resource) const {
return (p_resource.is_valid() && p_resource->is_class("ImageTexture"));
}
void ResourceSaverWebP::get_recognized_extensions(const Ref<Resource> &p_resource, List<String> *p_extensions) const {
if (Object::cast_to<ImageTexture>(*p_resource)) {
p_extensions->push_back("webp");
}
}
ResourceSaverWebP::ResourceSaverWebP() {
Image::save_webp_func = &save_image;
Image::save_webp_buffer_func = &save_image_to_buffer;
}

49
modules/webp/resource_saver_webp.h Normal file
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@ -0,0 +1,49 @@
/*************************************************************************/
/* resource_saver_webp.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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. */
/*************************************************************************/
#ifndef RESOURCE_SAVER_WEBP_H
#define RESOURCE_SAVER_WEBP_H
#include "core/io/image.h"
#include "core/io/resource_saver.h"
class ResourceSaverWebP : public ResourceFormatSaver {
public:
static Error save_image(const String &p_path, const Ref<Image> &p_img, const bool p_lossy = false, const float p_quality = 0.75f);
static Vector<uint8_t> save_image_to_buffer(const Ref<Image> &p_img, const bool p_lossy = false, const float p_quality = 0.75f);
virtual Error save(const String &p_path, const Ref<Resource> &p_resource, uint32_t p_flags = 0);
virtual bool recognize(const Ref<Resource> &p_resource) const;
virtual void get_recognized_extensions(const Ref<Resource> &p_resource, List<String> *p_extensions) const;
ResourceSaverWebP();
};
#endif // RESOURCE_SAVER_WEBP_H

190
modules/webp/webp_common.cpp Normal file
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@ -0,0 +1,190 @@
/*************************************************************************/
/* webp_common.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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 "webp_common.h"
#include "core/config/project_settings.h"
#include "core/os/os.h"
#include <string.h>
#include <webp/decode.h>
#include <webp/encode.h>
namespace WebPCommon {
Vector<uint8_t> _webp_lossy_pack(const Ref<Image> &p_image, float p_quality) {
ERR_FAIL_COND_V(p_image.is_null() || p_image->is_empty(), Vector<uint8_t>());
Ref<Image> img = p_image->duplicate();
if (img->detect_alpha()) {
img->convert(Image::FORMAT_RGBA8);
} else {
img->convert(Image::FORMAT_RGB8);
}
Size2 s(img->get_width(), img->get_height());
Vector<uint8_t> data = img->get_data();
const uint8_t *r = data.ptr();
uint8_t *dst_buff = nullptr;
size_t dst_size = 0;
if (img->get_format() == Image::FORMAT_RGB8) {
dst_size = WebPEncodeRGB(r, s.width, s.height, 3 * s.width, CLAMP(p_quality * 100.0f, 0.0f, 100.0f), &dst_buff);
} else {
dst_size = WebPEncodeRGBA(r, s.width, s.height, 4 * s.width, CLAMP(p_quality * 100.0f, 0.0f, 100.0f), &dst_buff);
}
ERR_FAIL_COND_V(dst_size == 0, Vector<uint8_t>());
Vector<uint8_t> dst;
dst.resize(dst_size);
uint8_t *w = dst.ptrw();
memcpy(w, dst_buff, dst_size);
WebPFree(dst_buff);
return dst;
}
Vector<uint8_t> _webp_lossless_pack(const Ref<Image> &p_image) {
ERR_FAIL_COND_V(p_image.is_null() || p_image->is_empty(), Vector<uint8_t>());
int compression_level = ProjectSettings::get_singleton()->get("rendering/textures/lossless_compression/webp_compression_level");
compression_level = CLAMP(compression_level, 0, 9);
Ref<Image> img = p_image->duplicate();
if (img->detect_alpha()) {
img->convert(Image::FORMAT_RGBA8);
} else {
img->convert(Image::FORMAT_RGB8);
}
Size2 s(img->get_width(), img->get_height());
Vector<uint8_t> data = img->get_data();
const uint8_t *r = data.ptr();
// we need to use the more complex API in order to access the 'exact' flag...
WebPConfig config;
WebPPicture pic;
if (!WebPConfigInit(&config) || !WebPConfigLosslessPreset(&config, compression_level) || !WebPPictureInit(&pic)) {
ERR_FAIL_V(Vector<uint8_t>());
}
WebPMemoryWriter wrt;
config.exact = 1;
pic.use_argb = 1;
pic.width = s.width;
pic.height = s.height;
pic.writer = WebPMemoryWrite;
pic.custom_ptr = &wrt;
WebPMemoryWriterInit(&wrt);
bool success_import = false;
if (img->get_format() == Image::FORMAT_RGB8) {
success_import = WebPPictureImportRGB(&pic, r, 3 * s.width);
} else {
success_import = WebPPictureImportRGBA(&pic, r, 4 * s.width);
}
bool success_encode = false;
if (success_import) {
success_encode = WebPEncode(&config, &pic);
}
WebPPictureFree(&pic);
if (!success_encode) {
WebPMemoryWriterClear(&wrt);
ERR_FAIL_V_MSG(Vector<uint8_t>(), "WebP packing failed.");
}
// copy from wrt
Vector<uint8_t> dst;
dst.resize(wrt.size);
uint8_t *w = dst.ptrw();
memcpy(w, wrt.mem, wrt.size);
WebPMemoryWriterClear(&wrt);
return dst;
}
Ref<Image> _webp_unpack(const Vector<uint8_t> &p_buffer) {
int size = p_buffer.size();
ERR_FAIL_COND_V(size <= 0, Ref<Image>());
const uint8_t *r = p_buffer.ptr();
// A WebP file uses a RIFF header, which starts with "RIFF____WEBP".
ERR_FAIL_COND_V(r[0] != 'R' || r[1] != 'I' || r[2] != 'F' || r[3] != 'F' || r[8] != 'W' || r[9] != 'E' || r[10] != 'B' || r[11] != 'P', Ref<Image>());
WebPBitstreamFeatures features;
if (WebPGetFeatures(r, size, &features) != VP8_STATUS_OK) {
ERR_FAIL_V_MSG(Ref<Image>(), "Error unpacking WEBP image.");
}
Vector<uint8_t> dst_image;
int datasize = features.width * features.height * (features.has_alpha ? 4 : 3);
dst_image.resize(datasize);
uint8_t *dst_w = dst_image.ptrw();
bool errdec = false;
if (features.has_alpha) {
errdec = WebPDecodeRGBAInto(r, size, dst_w, datasize, 4 * features.width) == nullptr;
} else {
errdec = WebPDecodeRGBInto(r, size, dst_w, datasize, 3 * features.width) == nullptr;
}
ERR_FAIL_COND_V_MSG(errdec, Ref<Image>(), "Failed decoding WebP image.");
Ref<Image> img = memnew(Image(features.width, features.height, 0, features.has_alpha ? Image::FORMAT_RGBA8 : Image::FORMAT_RGB8, dst_image));
return img;
}
Error webp_load_image_from_buffer(Image *p_image, const uint8_t *p_buffer, int p_buffer_len) {
ERR_FAIL_NULL_V(p_image, ERR_INVALID_PARAMETER);
WebPBitstreamFeatures features;
if (WebPGetFeatures(p_buffer, p_buffer_len, &features) != VP8_STATUS_OK) {
ERR_FAIL_V(ERR_FILE_CORRUPT);
}
Vector<uint8_t> dst_image;
int datasize = features.width * features.height * (features.has_alpha ? 4 : 3);
dst_image.resize(datasize);
uint8_t *dst_w = dst_image.ptrw();
bool errdec = false;
if (features.has_alpha) {
errdec = WebPDecodeRGBAInto(p_buffer, p_buffer_len, dst_w, datasize, 4 * features.width) == nullptr;
} else {
errdec = WebPDecodeRGBInto(p_buffer, p_buffer_len, dst_w, datasize, 3 * features.width) == nullptr;
}
ERR_FAIL_COND_V_MSG(errdec, ERR_FILE_CORRUPT, "Failed decoding WebP image.");
p_image->create(features.width, features.height, false, features.has_alpha ? Image::FORMAT_RGBA8 : Image::FORMAT_RGB8, dst_image);
return OK;
}
} // namespace WebPCommon

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/*************************************************************************/
/* webp_common.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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. */
/*************************************************************************/
#ifndef WEBP_COMMON_H
#define WEBP_COMMON_H
#include "core/io/image.h"
namespace WebPCommon {
// Given an image, pack this data into a WebP file.
Vector<uint8_t> _webp_lossy_pack(const Ref<Image> &p_image, float p_quality);
Vector<uint8_t> _webp_lossless_pack(const Ref<Image> &p_image);
// Given a WebP file, unpack it into an image.
Ref<Image> _webp_unpack(const Vector<uint8_t> &p_buffer);
Error webp_load_image_from_buffer(Image *p_image, const uint8_t *p_buffer, int p_buffer_len);
} //namespace WebPCommon
#endif // WEBP_COMMON_H