init

Author: setanarut

.gitignore

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+# Binaries for programs and plugins
+*.exe
+*.dll
+*.so
+*.dylib
+
+# Test binary, build with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
+.glide/
+
+.gvm
+vendor/

LICENSE.md

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+MIT License
+
+Copyright (c) 2025 Barış
+
+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.
+
+---
+
+ The Go gopher mascot was designed by Renee French.
+The design is licensed under the [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) license

README.md

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+[![GoDoc](https://godoc.org/github.com/setanarut/apng?status.svg)](https://pkg.go.dev/github.com/setanarut/apng)
+
+# apng
+apng is implementation of [APNG(Animated PNG)](https://developer.mozilla.org/en-US/docs/Mozilla/Tech/APNG) Encoder in Go.
+
+![animated_gopher](_example/res/animated_gopher.png)
+
+## Installation
+
+```sh
+go get github.com/setanarut/apng
+```
+
+## Usage
+See: [example.go](_example/example.go).

_example/main.go

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+package main
+
+import (
+	"fmt"
+	"image/png"
+	"os"
+
+	"github.com/setanarut/apng"
+)
+
+func main() {
+	inPaths := []string{
+		"res/gopher01.png",
+		"res/gopher02.png",
+		"res/gopher03.png",
+	}
+	outPath := "res/animated_gopher.png"
+
+	// Assemble output image.
+	outApng := &apng.APNG{}
+	for _, inPath := range inPaths {
+		// Read image file.
+		f, err := os.Open(inPath)
+		if err != nil {
+			fmt.Println(err)
+			f.Close()
+			return
+		}
+		inPng, err := png.Decode(f)
+		if err != nil {
+			fmt.Println(err)
+			f.Close()
+			return
+		}
+		f.Close()
+
+		// Append a frame(type: *image.Image). First frame used as the default image.
+		outApng.Images = append(outApng.Images, inPng)
+
+		// Append a delay time(type: uint32) per frame in 10 milliseconds.
+		// If it is 0, the decoder renders the next frame as quickly as possible.
+		outApng.Delays = append(outApng.Delays, 0)
+	}
+
+	// Encode images to APNG image.
+	f, err := os.Create(outPath)
+	if err != nil {
+		fmt.Println(err)
+		f.Close()
+
+		return
+	}
+	if err = apng.EncodeAll(f, outApng); err != nil {
+		fmt.Println(err)
+		f.Close()
+		os.Remove(outPath)
+		return
+	}
+	f.Close()
+}

_example/res/animated_gopher.png

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+module github.com/setanarut/apng
+
+go 1.24.1