godot/modules/webp/webp_common.cpp

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

177 lines
6.7 KiB
C++
Raw Normal View History

/**************************************************************************/
/* webp_common.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 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. */
/**************************************************************************/
2022-06-04 21:05:55 +00:00
#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>());
return _webp_packer(p_image, CLAMP(p_quality * 100.0f, 0.0f, 100.0f), false);
2022-06-04 21:05:55 +00:00
}
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>());
float compression_factor = GLOBAL_GET("rendering/textures/webp_compression/lossless_compression_factor");
compression_factor = CLAMP(compression_factor, 0.0f, 100.0f);
return _webp_packer(p_image, compression_factor, true);
}
Vector<uint8_t> _webp_packer(const Ref<Image> &p_image, float p_quality, bool p_lossless) {
int compression_method = GLOBAL_GET("rendering/textures/webp_compression/compression_method");
compression_method = CLAMP(compression_method, 0, 6);
2022-06-04 21:05:55 +00:00
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 specific flags...
2022-06-04 21:05:55 +00:00
WebPConfig config;
WebPPicture pic;
if (!WebPConfigInit(&config) || !WebPPictureInit(&pic)) {
2022-06-04 21:05:55 +00:00
ERR_FAIL_V(Vector<uint8_t>());
}
WebPMemoryWriter wrt;
if (p_lossless) {
config.lossless = 1;
config.exact = 1;
}
config.method = compression_method;
config.quality = p_quality;
2022-06-04 21:05:55 +00:00
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.");
2022-06-04 21:05:55 +00:00
}
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.");
2022-07-22 18:06:19 +00:00
p_image->set_data(features.width, features.height, false, features.has_alpha ? Image::FORMAT_RGBA8 : Image::FORMAT_RGB8, dst_image);
2022-06-04 21:05:55 +00:00
return OK;
}
} // namespace WebPCommon