&togif command (libvips version) (#286)
* &togif command * use libvips not magick * include libvips build dir in gitignore
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5 changed files with 76 additions and 1 deletions
3
.gitignore
vendored
3
.gitignore
vendored
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@ -25,6 +25,7 @@ build/
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# Dependency directories
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node_modules/
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jspm_packages/
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libvips/
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# Optional npm cache directory
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.npm
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@ -127,4 +128,4 @@ local.settings.json
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# Azurite artifacts
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__blobstorage__
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__queuestorage__
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__azurite_db*__.json
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__azurite_db*__.json
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11
commands/image-editing/togif.js
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11
commands/image-editing/togif.js
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@ -0,0 +1,11 @@
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import ImageCommand from "../../classes/imageCommand.js";
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class ToGIFCommand extends ImageCommand {
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static description = "Turns an image into a gif";
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static aliases = ["tgif", "gifify"];
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static noImage = "You need to provide an image to turn into a GIF!";
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static command = "togif";
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}
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export default ToGIFCommand;
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@ -29,6 +29,7 @@
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#include "sonic.h"
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#include "spin.h"
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#include "tile.h"
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#include "togif.h"
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#include "uncaption.h"
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#include "wall.h"
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#include "watermark.h"
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@ -77,6 +78,7 @@ Napi::Object Init(Napi::Env env, Napi::Object exports)
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exports.Set(Napi::String::New(env, "spin"), Napi::Function::New(env, Spin));
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exports.Set(Napi::String::New(env, "swirl"), Napi::Function::New(env, Swirl));
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exports.Set(Napi::String::New(env, "tile"), Napi::Function::New(env, Tile));
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exports.Set(Napi::String::New(env, "togif"), Napi::Function::New(env, ToGif));
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exports.Set(Napi::String::New(env, "uncaption"), Napi::Function::New(env, Uncaption));
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exports.Set(Napi::String::New(env, "wall"), Napi::Function::New(env, Wall));
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exports.Set(Napi::String::New(env, "watermark"), Napi::Function::New(env, Watermark));
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56
natives/togif.cc
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56
natives/togif.cc
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@ -0,0 +1,56 @@
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#include <napi.h>
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#include <vips/vips8>
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using namespace std;
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using namespace vips;
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Napi::Value ToGif(const Napi::CallbackInfo &info) {
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Napi::Env env = info.Env();
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try {
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Napi::Object obj = info[0].As<Napi::Object>();
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Napi::Buffer<char> data = obj.Get("data").As<Napi::Buffer<char>>();
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string type = obj.Get("type").As<Napi::String>().Utf8Value();
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if (type == "gif") {
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Napi::Object result = Napi::Object::New(env);
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result.Set("data", data);
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result.Set("type", "gif");
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return result;
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}
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VOption *options = VImage::option()->set("access", "sequential");
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VImage in =
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VImage::new_from_buffer(data.Data(), data.Length(), "",
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type == "gif" ? options->set("n", -1) : options)
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.colourspace(VIPS_INTERPRETATION_sRGB);
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if (!in.has_alpha()) in = in.bandjoin(255);
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int pageHeight = vips_image_get_page_height(in.get_image());
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vector<VImage> img;
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img.push_back(in);
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VImage final = VImage::arrayjoin(img, VImage::option()->set("across", 1));
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final.set(VIPS_META_PAGE_HEIGHT, pageHeight + in.height());
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void *buf;
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size_t length;
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final.write_to_buffer(
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("." + type).c_str(), &buf, &length, VImage::option()->set("dither", 0));
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vips_thread_shutdown();
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Napi::Object result = Napi::Object::New(env);
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result.Set("data", Napi::Buffer<char>::Copy(env, (char *)buf, length));
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result.Set("type", "gif");
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return result;
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} catch (std::exception const &err) {
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throw Napi::Error::New(env, err.what());
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} catch (...) {
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throw Napi::Error::New(env, "Unknown error");
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}
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}
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5
natives/togif.h
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5
natives/togif.h
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@ -0,0 +1,5 @@
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#pragma once
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#include <napi.h>
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Napi::Value ToGif(const Napi::CallbackInfo& info);
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