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Diffstat (limited to 'modules/webp/webp_common.cpp')
| -rw-r--r-- | modules/webp/webp_common.cpp | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/modules/webp/webp_common.cpp b/modules/webp/webp_common.cpp new file mode 100644 index 0000000000..8657a98853 --- /dev/null +++ b/modules/webp/webp_common.cpp @@ -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 |