/opt/canhelp/node_modules/sharp/src/
/opt/canhelp/node_modules/sharp/src
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binding.gyp105970644editdlrm
common.cc391810644editdlrm
common.h106390644editdlrm
metadata.cc132210644editdlrm
metadata.h17680644editdlrm
operations.cc165840644editdlrm
operations.h36070644editdlrm
pipeline.cc844300644editdlrm
pipeline.h98280644editdlrm
sharp.cc15290644editdlrm
stats.cc66830644editdlrm
stats.h12670644editdlrm
utilities.cc94540644editdlrm
utilities.h7410644editdlrm
Edit: /opt/canhelp/node_modules/sharp/src/common.cc (39181B)
/*! Copyright 2013 Lovell Fuller and others. SPDX-License-Identifier: Apache-2.0 */ #include #include #include #include #include #include #include #include #include #include #include #include "./common.h" using vips::VImage; namespace sharp { // Convenience methods to access the attributes of a Napi::Object bool HasAttr(Napi::Object obj, std::string attr) { return obj.Has(attr); } std::string AttrAsStr(Napi::Object obj, std::string attr) { return obj.Get(attr).As(); } std::string AttrAsStr(Napi::Object obj, unsigned int const attr) { return obj.Get(attr).As(); } uint32_t AttrAsUint32(Napi::Object obj, std::string attr) { return obj.Get(attr).As().Uint32Value(); } int32_t AttrAsInt32(Napi::Object obj, std::string attr) { return obj.Get(attr).As().Int32Value(); } int32_t AttrAsInt32(Napi::Object obj, unsigned int const attr) { return obj.Get(attr).As().Int32Value(); } int64_t AttrAsInt64(Napi::Object obj, std::string attr) { return obj.Get(attr).As().Int64Value(); } double AttrAsDouble(Napi::Object obj, std::string attr) { return obj.Get(attr).As().DoubleValue(); } double AttrAsDouble(Napi::Object obj, unsigned int const attr) { return obj.Get(attr).As().DoubleValue(); } bool AttrAsBool(Napi::Object obj, std::string attr) { return obj.Get(attr).As().Value(); } std::vector AttrAsVectorOfDouble(Napi::Object obj, std::string attr) { Napi::Array napiArray = obj.Get(attr).As(); std::vector vectorOfDouble(napiArray.Length()); for (unsigned int i = 0; i < napiArray.Length(); i++) { vectorOfDouble[i] = AttrAsDouble(napiArray, i); } return vectorOfDouble; } std::vector AttrAsInt32Vector(Napi::Object obj, std::string attr) { Napi::Array array = obj.Get(attr).As(); std::vector vector(array.Length()); for (unsigned int i = 0; i < array.Length(); i++) { vector[i] = AttrAsInt32(array, i); } return vector; } // Create an InputDescriptor instance from a Napi::Object describing an input image InputDescriptor* CreateInputDescriptor(Napi::Object input) { InputDescriptor *descriptor = new InputDescriptor; if (HasAttr(input, "file")) { descriptor->file = AttrAsStr(input, "file"); } else if (HasAttr(input, "buffer")) { Napi::Buffer buffer = input.Get("buffer").As>(); descriptor->bufferLength = buffer.Length(); descriptor->buffer = buffer.Data(); descriptor->isBuffer = true; } descriptor->failOn = AttrAsEnum(input, "failOn", VIPS_TYPE_FAIL_ON); // Density for vector-based input if (HasAttr(input, "density")) { descriptor->density = AttrAsDouble(input, "density"); } // Should we ignore any embedded ICC profile if (HasAttr(input, "ignoreIcc")) { descriptor->ignoreIcc = AttrAsBool(input, "ignoreIcc"); } // Raw pixel input if (HasAttr(input, "rawChannels")) { descriptor->rawDepth = AttrAsEnum(input, "rawDepth", VIPS_TYPE_BAND_FORMAT); descriptor->rawChannels = AttrAsUint32(input, "rawChannels"); descriptor->rawWidth = AttrAsUint32(input, "rawWidth"); descriptor->rawHeight = AttrAsUint32(input, "rawHeight"); descriptor->rawPremultiplied = AttrAsBool(input, "rawPremultiplied"); descriptor->rawPageHeight = AttrAsUint32(input, "rawPageHeight"); } // Multi-page input (GIF, TIFF, PDF) if (HasAttr(input, "pages")) { descriptor->pages = AttrAsInt32(input, "pages"); } if (HasAttr(input, "page")) { descriptor->page = AttrAsUint32(input, "page"); } // SVG if (HasAttr(input, "svgStylesheet")) { descriptor->svgStylesheet = AttrAsStr(input, "svgStylesheet"); } if (HasAttr(input, "svgHighBitdepth")) { descriptor->svgHighBitdepth = AttrAsBool(input, "svgHighBitdepth"); } // Multi-level input (OpenSlide) if (HasAttr(input, "openSlideLevel")) { descriptor->openSlideLevel = AttrAsUint32(input, "openSlideLevel"); } // subIFD (OME-TIFF) if (HasAttr(input, "subifd")) { descriptor->tiffSubifd = AttrAsInt32(input, "tiffSubifd"); } // // PDF background color if (HasAttr(input, "pdfBackground")) { descriptor->pdfBackground = AttrAsVectorOfDouble(input, "pdfBackground"); } // Use JPEG 2000 oneshot mode? if (HasAttr(input, "jp2Oneshot")) { descriptor->jp2Oneshot = AttrAsBool(input, "jp2Oneshot"); } // Create new image if (HasAttr(input, "createChannels")) { descriptor->createChannels = AttrAsUint32(input, "createChannels"); descriptor->createWidth = AttrAsUint32(input, "createWidth"); descriptor->createHeight = AttrAsUint32(input, "createHeight"); descriptor->createPageHeight = AttrAsUint32(input, "createPageHeight"); if (HasAttr(input, "createNoiseType")) { descriptor->createNoiseType = AttrAsStr(input, "createNoiseType"); descriptor->createNoiseMean = AttrAsDouble(input, "createNoiseMean"); descriptor->createNoiseSigma = AttrAsDouble(input, "createNoiseSigma"); } else { descriptor->createBackground = AttrAsVectorOfDouble(input, "createBackground"); } } // Create new image with text if (HasAttr(input, "textValue")) { descriptor->textValue = AttrAsStr(input, "textValue"); if (HasAttr(input, "textFont")) { descriptor->textFont = AttrAsStr(input, "textFont"); } if (HasAttr(input, "textFontfile")) { descriptor->textFontfile = AttrAsStr(input, "textFontfile"); } if (HasAttr(input, "textWidth")) { descriptor->textWidth = AttrAsUint32(input, "textWidth"); } if (HasAttr(input, "textHeight")) { descriptor->textHeight = AttrAsUint32(input, "textHeight"); } if (HasAttr(input, "textAlign")) { descriptor->textAlign = AttrAsEnum(input, "textAlign", VIPS_TYPE_ALIGN); } if (HasAttr(input, "textJustify")) { descriptor->textJustify = AttrAsBool(input, "textJustify"); } if (HasAttr(input, "textDpi")) { descriptor->textDpi = AttrAsUint32(input, "textDpi"); } if (HasAttr(input, "textRgba")) { descriptor->textRgba = AttrAsBool(input, "textRgba"); } if (HasAttr(input, "textSpacing")) { descriptor->textSpacing = AttrAsUint32(input, "textSpacing"); } if (HasAttr(input, "textWrap")) { descriptor->textWrap = AttrAsEnum(input, "textWrap", VIPS_TYPE_TEXT_WRAP); } } // Join images together if (HasAttr(input, "joinAnimated")) { descriptor->joinAnimated = AttrAsBool(input, "joinAnimated"); } if (HasAttr(input, "joinAcross")) { descriptor->joinAcross = AttrAsUint32(input, "joinAcross"); } if (HasAttr(input, "joinShim")) { descriptor->joinShim = AttrAsUint32(input, "joinShim"); } if (HasAttr(input, "joinBackground")) { descriptor->joinBackground = AttrAsVectorOfDouble(input, "joinBackground"); } if (HasAttr(input, "joinHalign")) { descriptor->joinHalign = AttrAsEnum(input, "joinHalign", VIPS_TYPE_ALIGN); } if (HasAttr(input, "joinValign")) { descriptor->joinValign = AttrAsEnum(input, "joinValign", VIPS_TYPE_ALIGN); } // Limit input images to a given number of pixels, where pixels = width * height descriptor->limitInputPixels = static_cast(AttrAsInt64(input, "limitInputPixels")); if (HasAttr(input, "access")) { descriptor->access = AttrAsBool(input, "sequentialRead") ? VIPS_ACCESS_SEQUENTIAL : VIPS_ACCESS_RANDOM; } // Remove safety features and allow unlimited input descriptor->unlimited = AttrAsBool(input, "unlimited"); // Use the EXIF orientation to auto orient the image descriptor->autoOrient = AttrAsBool(input, "autoOrient"); return descriptor; } // How many tasks are in the queue? std::atomic counterQueue{0}; // How many tasks are being processed? std::atomic counterProcess{0}; // Filename extension checkers static bool EndsWith(std::string const &str, std::string const &end) { return str.length() >= end.length() && 0 == str.compare(str.length() - end.length(), end.length(), end); } bool IsJpeg(std::string const &str) { return EndsWith(str, ".jpg") || EndsWith(str, ".jpeg") || EndsWith(str, ".JPG") || EndsWith(str, ".JPEG"); } bool IsPng(std::string const &str) { return EndsWith(str, ".png") || EndsWith(str, ".PNG"); } bool IsWebp(std::string const &str) { return EndsWith(str, ".webp") || EndsWith(str, ".WEBP"); } bool IsGif(std::string const &str) { return EndsWith(str, ".gif") || EndsWith(str, ".GIF"); } bool IsJp2(std::string const &str) { return EndsWith(str, ".jp2") || EndsWith(str, ".jpx") || EndsWith(str, ".j2k") || EndsWith(str, ".j2c") || EndsWith(str, ".JP2") || EndsWith(str, ".JPX") || EndsWith(str, ".J2K") || EndsWith(str, ".J2C"); } bool IsTiff(std::string const &str) { return EndsWith(str, ".tif") || EndsWith(str, ".tiff") || EndsWith(str, ".TIF") || EndsWith(str, ".TIFF"); } bool IsHeic(std::string const &str) { return EndsWith(str, ".heic") || EndsWith(str, ".HEIC"); } bool IsHeif(std::string const &str) { return EndsWith(str, ".heif") || EndsWith(str, ".HEIF") || IsHeic(str) || IsAvif(str); } bool IsAvif(std::string const &str) { return EndsWith(str, ".avif") || EndsWith(str, ".AVIF"); } bool IsJxl(std::string const &str) { return EndsWith(str, ".jxl") || EndsWith(str, ".JXL"); } bool IsDz(std::string const &str) { return EndsWith(str, ".dzi") || EndsWith(str, ".DZI"); } bool IsDzZip(std::string const &str) { return EndsWith(str, ".zip") || EndsWith(str, ".ZIP") || EndsWith(str, ".szi") || EndsWith(str, ".SZI"); } bool IsV(std::string const &str) { return EndsWith(str, ".v") || EndsWith(str, ".V") || EndsWith(str, ".vips") || EndsWith(str, ".VIPS"); } /* Trim space from end of string. */ std::string TrimEnd(std::string const &str) { return str.substr(0, str.find_last_not_of(" \n\r\f") + 1); } /* Provide a string identifier for the given image type. */ std::string ImageTypeId(ImageType const imageType) { std::string id; switch (imageType) { case ImageType::JPEG: id = "jpeg"; break; case ImageType::PNG: id = "png"; break; case ImageType::WEBP: id = "webp"; break; case ImageType::TIFF: id = "tiff"; break; case ImageType::GIF: id = "gif"; break; case ImageType::JP2: id = "jp2"; break; case ImageType::SVG: id = "svg"; break; case ImageType::HEIF: id = "heif"; break; case ImageType::PDF: id = "pdf"; break; case ImageType::MAGICK: id = "magick"; break; case ImageType::OPENSLIDE: id = "openslide"; break; case ImageType::PPM: id = "ppm"; break; case ImageType::FITS: id = "fits"; break; case ImageType::EXR: id = "exr"; break; case ImageType::JXL: id = "jxl"; break; case ImageType::RAD: id = "rad"; break; case ImageType::DCRAW: id = "dcraw"; break; case ImageType::VIPS: id = "vips"; break; case ImageType::RAW: id = "raw"; break; case ImageType::UNKNOWN: id = "unknown"; break; case ImageType::MISSING: id = "missing"; break; } return id; } /** * Regenerate this table with something like: * * $ vips -l foreign | grep -i load | awk '{ print $2, $1; }' * * Plus a bit of editing. */ std::map loaderToType = { { "VipsForeignLoadJpegFile", ImageType::JPEG }, { "VipsForeignLoadJpegBuffer", ImageType::JPEG }, { "VipsForeignLoadPngFile", ImageType::PNG }, { "VipsForeignLoadPngBuffer", ImageType::PNG }, { "VipsForeignLoadWebpFile", ImageType::WEBP }, { "VipsForeignLoadWebpBuffer", ImageType::WEBP }, { "VipsForeignLoadTiffFile", ImageType::TIFF }, { "VipsForeignLoadTiffBuffer", ImageType::TIFF }, { "VipsForeignLoadGifFile", ImageType::GIF }, { "VipsForeignLoadGifBuffer", ImageType::GIF }, { "VipsForeignLoadNsgifFile", ImageType::GIF }, { "VipsForeignLoadNsgifBuffer", ImageType::GIF }, { "VipsForeignLoadJp2kBuffer", ImageType::JP2 }, { "VipsForeignLoadJp2kFile", ImageType::JP2 }, { "VipsForeignLoadSvgFile", ImageType::SVG }, { "VipsForeignLoadSvgBuffer", ImageType::SVG }, { "VipsForeignLoadHeifFile", ImageType::HEIF }, { "VipsForeignLoadHeifBuffer", ImageType::HEIF }, { "VipsForeignLoadPdfFile", ImageType::PDF }, { "VipsForeignLoadPdfBuffer", ImageType::PDF }, { "VipsForeignLoadMagickFile", ImageType::MAGICK }, { "VipsForeignLoadMagickBuffer", ImageType::MAGICK }, { "VipsForeignLoadMagick7File", ImageType::MAGICK }, { "VipsForeignLoadMagick7Buffer", ImageType::MAGICK }, { "VipsForeignLoadOpenslideFile", ImageType::OPENSLIDE }, { "VipsForeignLoadPpmFile", ImageType::PPM }, { "VipsForeignLoadFitsFile", ImageType::FITS }, { "VipsForeignLoadOpenexr", ImageType::EXR }, { "VipsForeignLoadJxlFile", ImageType::JXL }, { "VipsForeignLoadJxlBuffer", ImageType::JXL }, { "VipsForeignLoadRadFile", ImageType::RAD }, { "VipsForeignLoadRadBuffer", ImageType::RAD }, { "VipsForeignLoadDcRawFile", ImageType::DCRAW }, { "VipsForeignLoadDcRawBuffer", ImageType::DCRAW }, { "VipsForeignLoadVips", ImageType::VIPS }, { "VipsForeignLoadVipsFile", ImageType::VIPS }, { "VipsForeignLoadRaw", ImageType::RAW } }; /* Determine image format of a buffer. */ ImageType DetermineImageType(void *buffer, size_t const length) { ImageType imageType = ImageType::UNKNOWN; char const *load = vips_foreign_find_load_buffer(buffer, length); if (load != nullptr) { auto it = loaderToType.find(load); if (it != loaderToType.end()) { imageType = it->second; } } return imageType; } /* Determine image format, reads the first few bytes of the file */ ImageType DetermineImageType(char const *file) { ImageType imageType = ImageType::UNKNOWN; char const *load = vips_foreign_find_load(file); if (load != nullptr) { auto it = loaderToType.find(load); if (it != loaderToType.end()) { imageType = it->second; } } else { if (EndsWith(vips::VError().what(), " does not exist\n")) { imageType = ImageType::MISSING; } } return imageType; } /* Does this image type support multiple pages? */ bool ImageTypeSupportsPage(ImageType imageType) { return imageType == ImageType::WEBP || imageType == ImageType::MAGICK || imageType == ImageType::GIF || imageType == ImageType::JP2 || imageType == ImageType::TIFF || imageType == ImageType::HEIF || imageType == ImageType::PDF; } /* Does this image type support removal of safety limits? */ bool ImageTypeSupportsUnlimited(ImageType imageType) { return imageType == ImageType::JPEG || imageType == ImageType::PNG || imageType == ImageType::SVG || imageType == ImageType::TIFF || imageType == ImageType::HEIF; } /* Format-specific options builder */ vips::VOption* GetOptionsForImageType(ImageType imageType, InputDescriptor *descriptor) { vips::VOption *option = VImage::option() ->set("access", descriptor->access) ->set("fail_on", descriptor->failOn); if (descriptor->unlimited && ImageTypeSupportsUnlimited(imageType)) { option->set("unlimited", true); } if (ImageTypeSupportsPage(imageType)) { option->set("n", descriptor->pages); option->set("page", descriptor->page); } switch (imageType) { case ImageType::SVG: option->set("dpi", descriptor->density) ->set("stylesheet", descriptor->svgStylesheet.data()) ->set("high_bitdepth", descriptor->svgHighBitdepth); break; case ImageType::TIFF: option->set("subifd", descriptor->tiffSubifd); break; case ImageType::PDF: option->set("dpi", descriptor->density) ->set("background", descriptor->pdfBackground); break; case ImageType::OPENSLIDE: option->set("level", descriptor->openSlideLevel); break; case ImageType::JP2: option->set("oneshot", descriptor->jp2Oneshot); break; case ImageType::MAGICK: option->set("density", std::to_string(descriptor->density).data()); break; default: break; } return option; } /* Open an image from the given InputDescriptor (filesystem, compressed buffer, raw pixel data) */ std::tuple OpenInput(InputDescriptor *descriptor) { VImage image; ImageType imageType; if (descriptor->isBuffer) { if (descriptor->rawChannels > 0) { // Raw, uncompressed pixel data bool const is8bit = vips_band_format_is8bit(descriptor->rawDepth); image = VImage::new_from_memory(descriptor->buffer, descriptor->bufferLength, descriptor->rawWidth, descriptor->rawHeight, descriptor->rawChannels, descriptor->rawDepth); if (descriptor->rawChannels < 3) { image.get_image()->Type = is8bit ? VIPS_INTERPRETATION_B_W : VIPS_INTERPRETATION_GREY16; } else { image.get_image()->Type = is8bit ? VIPS_INTERPRETATION_sRGB : VIPS_INTERPRETATION_RGB16; } if (descriptor->rawPageHeight > 0) { image.set(VIPS_META_PAGE_HEIGHT, descriptor->rawPageHeight); image.set(VIPS_META_N_PAGES, static_cast(descriptor->rawHeight / descriptor->rawPageHeight)); } if (descriptor->rawPremultiplied) { image = image.unpremultiply(); } imageType = ImageType::RAW; } else { // Compressed data imageType = DetermineImageType(descriptor->buffer, descriptor->bufferLength); if (imageType != ImageType::UNKNOWN) { try { vips::VOption *option = GetOptionsForImageType(imageType, descriptor); image = VImage::new_from_buffer(descriptor->buffer, descriptor->bufferLength, nullptr, option); if (imageType == ImageType::SVG || imageType == ImageType::PDF || imageType == ImageType::MAGICK) { image = SetDensity(image, descriptor->density); } } catch (vips::VError const &err) { throw vips::VError(std::string("Input buffer has corrupt header: ") + err.what()); } } else { throw vips::VError("Input buffer contains unsupported image format"); } } } else { int const channels = descriptor->createChannels; if (channels > 0) { // Create new image if (descriptor->createNoiseType == "gaussian") { std::vector bands = {}; bands.reserve(channels); for (int _band = 0; _band < channels; _band++) { bands.push_back(VImage::gaussnoise(descriptor->createWidth, descriptor->createHeight, VImage::option() ->set("mean", descriptor->createNoiseMean) ->set("sigma", descriptor->createNoiseSigma))); } image = VImage::bandjoin(bands).copy(VImage::option()->set("interpretation", channels < 3 ? VIPS_INTERPRETATION_B_W: VIPS_INTERPRETATION_sRGB)); } else { std::vector background = { descriptor->createBackground[0], descriptor->createBackground[1], descriptor->createBackground[2] }; if (channels == 4) { background.push_back(descriptor->createBackground[3]); } image = VImage::new_matrix(descriptor->createWidth, descriptor->createHeight) .copy(VImage::option()->set("interpretation", channels < 3 ? VIPS_INTERPRETATION_B_W : VIPS_INTERPRETATION_sRGB)) .new_from_image(background); } if (descriptor->createPageHeight > 0) { image.set(VIPS_META_PAGE_HEIGHT, descriptor->createPageHeight); image.set(VIPS_META_N_PAGES, static_cast(descriptor->createHeight / descriptor->createPageHeight)); } image = image.cast(VIPS_FORMAT_UCHAR); imageType = ImageType::RAW; } else if (descriptor->textValue.length() > 0) { // Create a new image with text vips::VOption *textOptions = VImage::option() ->set("align", descriptor->textAlign) ->set("justify", descriptor->textJustify) ->set("rgba", descriptor->textRgba) ->set("spacing", descriptor->textSpacing) ->set("wrap", descriptor->textWrap) ->set("autofit_dpi", &descriptor->textAutofitDpi); if (descriptor->textWidth > 0) { textOptions->set("width", descriptor->textWidth); } // Ignore dpi if height is set if (descriptor->textWidth > 0 && descriptor->textHeight > 0) { textOptions->set("height", descriptor->textHeight); } else if (descriptor->textDpi > 0) { textOptions->set("dpi", descriptor->textDpi); } if (descriptor->textFont.length() > 0) { textOptions->set("font", const_cast(descriptor->textFont.data())); } if (descriptor->textFontfile.length() > 0) { textOptions->set("fontfile", const_cast(descriptor->textFontfile.data())); } image = VImage::text(const_cast(descriptor->textValue.data()), textOptions); if (!descriptor->textRgba) { image = image.copy(VImage::option()->set("interpretation", VIPS_INTERPRETATION_B_W)); } imageType = ImageType::RAW; } else { // From filesystem imageType = DetermineImageType(descriptor->file.data()); if (imageType == ImageType::MISSING) { if (descriptor->file.find("file.substr(0, 8) + "...')?"); } throw vips::VError("Input file is missing: " + descriptor->file); } if (imageType != ImageType::UNKNOWN) { try { vips::VOption *option = GetOptionsForImageType(imageType, descriptor); image = VImage::new_from_file(descriptor->file.data(), option); if (imageType == ImageType::SVG || imageType == ImageType::PDF || imageType == ImageType::MAGICK) { image = SetDensity(image, descriptor->density); } } catch (vips::VError const &err) { throw vips::VError(std::string("Input file has corrupt header: ") + err.what()); } } else { throw vips::VError("Input file contains unsupported image format"); } } } // Limit input images to a given number of pixels, where pixels = width * height if (descriptor->limitInputPixels > 0 && static_cast(image.width()) * image.height() > descriptor->limitInputPixels) { throw vips::VError("Input image exceeds pixel limit"); } return std::make_tuple(image, imageType); } /* Does this image have an embedded profile? */ bool HasProfile(VImage image) { return image.get_typeof(VIPS_META_ICC_NAME) == VIPS_TYPE_BLOB; } /* Get copy of embedded profile. */ std::pair GetProfile(VImage image) { std::pair icc(nullptr, 0); if (HasProfile(image)) { size_t length; const void *data = image.get_blob(VIPS_META_ICC_NAME, &length); icc.first = static_cast(g_malloc(length)); icc.second = length; memcpy(icc.first, data, length); } return icc; } /* Set embedded profile. */ VImage SetProfile(VImage image, std::pair icc) { if (icc.first != nullptr) { image = image.copy(); image.set(VIPS_META_ICC_NAME, reinterpret_cast(vips_area_free_cb), icc.first, icc.second); } return image; } static void* RemoveExifCallback(VipsImage *image, char const *field, GValue *value, void *data) { std::vector *fieldNames = static_cast *>(data); std::string fieldName(field); if (fieldName.substr(0, 8) == ("exif-ifd")) { fieldNames->push_back(fieldName); } return nullptr; } /* Remove all EXIF-related image fields. */ VImage RemoveExif(VImage image) { std::vector fieldNames; vips_image_map(image.get_image(), static_cast(RemoveExifCallback), &fieldNames); for (const auto& f : fieldNames) { image.remove(f.data()); } return image; } /* Get EXIF Orientation of image, if any. */ int ExifOrientation(VImage image) { int orientation = 0; if (image.get_typeof(VIPS_META_ORIENTATION) != 0) { orientation = image.get_int(VIPS_META_ORIENTATION); } return orientation; } /* Set EXIF Orientation of image. */ VImage SetExifOrientation(VImage image, int const orientation) { VImage copy = image.copy(); copy.set(VIPS_META_ORIENTATION, orientation); return copy; } /* Remove EXIF Orientation from image. */ VImage RemoveExifOrientation(VImage image) { VImage copy = image.copy(); copy.remove(VIPS_META_ORIENTATION); copy.remove("exif-ifd0-Orientation"); return copy; } /* Set animation properties if necessary. */ VImage SetAnimationProperties(VImage image, int nPages, int pageHeight, std::vector delay, int loop) { bool hasDelay = !delay.empty(); VImage copy = image.copy(); // Only set page-height if we have more than one page, or this could // accidentally turn into an animated image later. if (nPages > 1) copy.set(VIPS_META_PAGE_HEIGHT, pageHeight); if (hasDelay) { if (delay.size() == 1) { // We have just one delay, repeat that value for all frames. delay.insert(delay.end(), nPages - 1, delay[0]); } copy.set("delay", delay); } if (nPages == 1 && !hasDelay && loop == -1) { loop = 1; } if (loop != -1) copy.set("loop", loop); return copy; } /* Remove animation properties from image. */ VImage RemoveAnimationProperties(VImage image) { VImage copy = image.copy(); copy.remove(VIPS_META_PAGE_HEIGHT); copy.remove("delay"); copy.remove("loop"); return copy; } /* Remove GIF palette from image. */ VImage RemoveGifPalette(VImage image) { VImage copy = image.copy(); copy.remove("gif-palette"); return copy; } /* Does this image have a non-default density? */ bool HasDensity(VImage image) { return image.xres() > 1.0; } /* Get pixels/mm resolution as pixels/inch density. */ int GetDensity(VImage image) { return static_cast(round(image.xres() * 25.4)); } /* Set pixels/mm resolution based on a pixels/inch density. */ VImage SetDensity(VImage image, const double density) { const double pixelsPerMm = density / 25.4; VImage copy = image.copy(); copy.get_image()->Xres = pixelsPerMm; copy.get_image()->Yres = pixelsPerMm; return copy; } /* Multi-page images can have a page height. Fetch it, and sanity check it. If page-height is not set, it defaults to the image height */ int GetPageHeight(VImage image) { return vips_image_get_page_height(image.get_image()); } /* Check the proposed format supports the current dimensions. */ void AssertImageTypeDimensions(VImage image, ImageType const imageType) { const int height = image.get_typeof(VIPS_META_PAGE_HEIGHT) == G_TYPE_INT ? image.get_int(VIPS_META_PAGE_HEIGHT) : image.height(); if (imageType == ImageType::JPEG) { if (image.width() > 65535 || height > 65535) { throw vips::VError("Processed image is too large for the JPEG format"); } } else if (imageType == ImageType::WEBP) { if (image.width() > 16383 || height > 16383) { throw vips::VError("Processed image is too large for the WebP format"); } } else if (imageType == ImageType::GIF) { if (image.width() > 65535 || height > 65535) { throw vips::VError("Processed image is too large for the GIF format"); } } else if (imageType == ImageType::HEIF) { if (image.width() > 16384 || height > 16384) { throw vips::VError("Processed image is too large for the HEIF format"); } } } /* Called when a Buffer undergoes GC, required to support mixed runtime libraries in Windows */ std::function FreeCallback = [](void*, char* data) { g_free(data); }; /* Temporary buffer of warnings */ std::queue vipsWarnings; std::mutex vipsWarningsMutex; /* Called with warnings from the glib-registered "VIPS" domain */ void VipsWarningCallback(char const* log_domain, GLogLevelFlags log_level, char const* message, void* ignore) { std::lock_guard lock(vipsWarningsMutex); vipsWarnings.emplace(message); } /* Pop the oldest warning message from the queue */ std::string VipsWarningPop() { std::string warning; std::lock_guard lock(vipsWarningsMutex); if (!vipsWarnings.empty()) { warning = vipsWarnings.front(); vipsWarnings.pop(); } return warning; } /* Attach an event listener for progress updates, used to detect timeout */ void SetTimeout(VImage image, int const seconds) { if (seconds > 0) { VipsImage *im = image.get_image(); if (im->progress_signal == NULL) { int *timeout = VIPS_NEW(im, int); *timeout = seconds; g_signal_connect(im, "eval", G_CALLBACK(VipsProgressCallBack), timeout); vips_image_set_progress(im, true); } } } /* Event listener for progress updates, used to detect timeout */ void VipsProgressCallBack(VipsImage *im, VipsProgress *progress, int *timeout) { if (*timeout > 0 && progress->run >= *timeout) { vips_image_set_kill(im, true); vips_error("timeout", "%d%% complete", progress->percent); *timeout = 0; } } /* Calculate the (left, top) coordinates of the output image within the input image, applying the given gravity during an embed. @Azurebyte: We are basically swapping the inWidth and outWidth, inHeight and outHeight from the CalculateCrop function. */ std::tuple CalculateEmbedPosition(int const inWidth, int const inHeight, int const outWidth, int const outHeight, int const gravity) { int left = 0; int top = 0; switch (gravity) { case 1: // North left = (outWidth - inWidth) / 2; break; case 2: // East left = outWidth - inWidth; top = (outHeight - inHeight) / 2; break; case 3: // South left = (outWidth - inWidth) / 2; top = outHeight - inHeight; break; case 4: // West top = (outHeight - inHeight) / 2; break; case 5: // Northeast left = outWidth - inWidth; break; case 6: // Southeast left = outWidth - inWidth; top = outHeight - inHeight; break; case 7: // Southwest top = outHeight - inHeight; break; case 8: // Northwest // Which is the default is 0,0 so we do not assign anything here. break; default: // Centre left = (outWidth - inWidth) / 2; top = (outHeight - inHeight) / 2; } return std::make_tuple(left, top); } /* Calculate the (left, top) coordinates of the output image within the input image, applying the given gravity during a crop. */ std::tuple CalculateCrop(int const inWidth, int const inHeight, int const outWidth, int const outHeight, int const gravity) { int left = 0; int top = 0; switch (gravity) { case 1: // North left = (inWidth - outWidth + 1) / 2; break; case 2: // East left = inWidth - outWidth; top = (inHeight - outHeight + 1) / 2; break; case 3: // South left = (inWidth - outWidth + 1) / 2; top = inHeight - outHeight; break; case 4: // West top = (inHeight - outHeight + 1) / 2; break; case 5: // Northeast left = inWidth - outWidth; break; case 6: // Southeast left = inWidth - outWidth; top = inHeight - outHeight; break; case 7: // Southwest top = inHeight - outHeight; break; case 8: // Northwest break; default: // Centre left = (inWidth - outWidth + 1) / 2; top = (inHeight - outHeight + 1) / 2; } return std::make_tuple(left, top); } /* Calculate the (left, top) coordinates of the output image within the input image, applying the given x and y offsets. */ std::tuple CalculateCrop(int const inWidth, int const inHeight, int const outWidth, int const outHeight, int const x, int const y) { // default values int left = 0; int top = 0; // assign only if valid if (x < (inWidth - outWidth)) { left = x; } else if (x >= (inWidth - outWidth)) { left = inWidth - outWidth; } if (y < (inHeight - outHeight)) { top = y; } else if (y >= (inHeight - outHeight)) { top = inHeight - outHeight; } return std::make_tuple(left, top); } /* Are pixel values in this image 16-bit integer? */ bool Is16Bit(VipsInterpretation const interpretation) { return interpretation == VIPS_INTERPRETATION_RGB16 || interpretation == VIPS_INTERPRETATION_GREY16; } /* Convert RGBA value to another colourspace */ std::vector GetRgbaAsColourspace(std::vector const rgba, VipsInterpretation const interpretation, bool premultiply) { int const bands = static_cast(rgba.size()); if (bands < 3) { return rgba; } VImage pixel = VImage::new_matrix(1, 1); pixel.set("bands", bands); pixel = pixel .new_from_image(rgba) .colourspace(interpretation, VImage::option()->set("source_space", VIPS_INTERPRETATION_sRGB)); if (premultiply) { pixel = pixel.premultiply(); } return pixel(0, 0); } /* Apply the alpha channel to a given colour */ std::tuple> ApplyAlpha(VImage image, std::vector colour, bool premultiply) { // Scale up 8-bit values to match 16-bit input image double const multiplier = sharp::Is16Bit(image.interpretation()) ? 256.0 : 1.0; // Create alphaColour colour std::vector alphaColour; if (image.bands() > 2) { alphaColour = { multiplier * colour[0], multiplier * colour[1], multiplier * colour[2] }; } else { // Convert sRGB to greyscale alphaColour = { multiplier * ( 0.2126 * colour[0] + 0.7152 * colour[1] + 0.0722 * colour[2]) }; } // Add alpha channel(s) to alphaColour colour if (colour[3] < 255.0 || image.has_alpha()) { int extraBands = image.bands() > 4 ? image.bands() - 3 : 1; alphaColour.insert(alphaColour.end(), extraBands, colour[3] * multiplier); } // Ensure alphaColour colour uses correct colourspace alphaColour = sharp::GetRgbaAsColourspace(alphaColour, image.interpretation(), premultiply); // Add non-transparent alpha channel, if required if (colour[3] < 255.0 && !image.has_alpha()) { image = image.bandjoin_const({ 255 * multiplier }); } return std::make_tuple(image, alphaColour); } /* Removes alpha channels, if any. */ VImage RemoveAlpha(VImage image) { while (image.bands() > 1 && image.has_alpha()) { image = image.extract_band(0, VImage::option()->set("n", image.bands() - 1)); } return image; } /* Ensures alpha channel, if missing. */ VImage EnsureAlpha(VImage image, double const value) { if (!image.has_alpha()) { image = image.bandjoin_const({ value * vips_interpretation_max_alpha(image.interpretation()) }); } return image; } std::pair ResolveShrink(int width, int height, int targetWidth, int targetHeight, Canvas canvas, bool withoutEnlargement, bool withoutReduction) { double hshrink = 1.0; double vshrink = 1.0; if (targetWidth > 0 && targetHeight > 0) { // Fixed width and height hshrink = static_cast(width) / targetWidth; vshrink = static_cast(height) / targetHeight; switch (canvas) { case Canvas::CROP: case Canvas::MIN: if (hshrink < vshrink) { vshrink = hshrink; } else { hshrink = vshrink; } break; case Canvas::EMBED: case Canvas::MAX: if (hshrink > vshrink) { vshrink = hshrink; } else { hshrink = vshrink; } break; case Canvas::IGNORE_ASPECT: break; } } else if (targetWidth > 0) { // Fixed width hshrink = static_cast(width) / targetWidth; if (canvas != Canvas::IGNORE_ASPECT) { // Auto height vshrink = hshrink; } } else if (targetHeight > 0) { // Fixed height vshrink = static_cast(height) / targetHeight; if (canvas != Canvas::IGNORE_ASPECT) { // Auto width hshrink = vshrink; } } // We should not reduce or enlarge the output image, if // withoutReduction or withoutEnlargement is specified. if (withoutReduction) { // Equivalent of VIPS_SIZE_UP hshrink = std::min(1.0, hshrink); vshrink = std::min(1.0, vshrink); } else if (withoutEnlargement) { // Equivalent of VIPS_SIZE_DOWN hshrink = std::max(1.0, hshrink); vshrink = std::max(1.0, vshrink); } // We don't want to shrink so much that we send an axis to 0 hshrink = std::min(hshrink, static_cast(width)); vshrink = std::min(vshrink, static_cast(height)); return std::make_pair(hshrink, vshrink); } /* Ensure decoding remains sequential. */ VImage StaySequential(VImage image, bool condition) { if (vips_image_is_sequential(image.get_image()) && condition) { image = image.copy_memory().copy(); image.remove(VIPS_META_SEQUENTIAL); } return image; } } // namespace sharp