update

.gitignore

@@ -0,0 +1 @@
+.idea

.gitmodules

@@ -0,0 +1,9 @@
+[submodule "darwin-arm64"]
+	path = darwin-arm64
+	url = git@github.com:go-ffstatic/darwin-arm64.git
+[submodule "darwin-amd64"]
+	path = darwin-amd64
+	url = git@github.com:go-ffstatic/darwin-amd64.git
+[submodule "windows-amd64"]
+	path = windows-amd64
+	url = git@github.com:go-ffstatic/windows-amd64.git

generate.go

@@ -0,0 +1,126 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"strings"
+	"sync"
+)
+
+var kinds = []string{
+	"ffmpeg",
+	"ffprobe",
+}
+var systems = []string{
+	"darwin",
+	"freebsd",
+	"win32",
+	"linux",
+}
+var arches = []string{
+	"arm64",
+	"ia32",
+	"arm",
+	"x64",
+}
+
+const pkg = "ffstatic"
+const tag = "b4.4.0-rc.11"
+
+func download(kind, system, arch string) error {
+	fileName := fmt.Sprintf("%s_%s_%s", kind, system, arch)
+	constraint := []string{}
+	switch arch {
+	case "ia32":
+		constraint = []string{"386"}
+	case "x64":
+		constraint = []string{"amd64"}
+	default:
+		constraint = append(constraint, arch)
+	}
+	switch system {
+	case "win32":
+		constraint = append(constraint, "windows")
+	default:
+		constraint = append(constraint, system)
+	}
+	{
+		downloadURL := fmt.Sprintf("https://github.com/descriptinc/ffmpeg-ffprobe-static/releases/download/%s/%s-%s-%s", tag, kind, system, arch)
+
+		resp, err := http.Get(downloadURL)
+		if err != nil {
+			return fmt.Errorf("failed to download %s: %v", downloadURL, err)
+		}
+		defer resp.Body.Close()
+
+		if resp.StatusCode == http.StatusNotFound {
+			return nil
+		}
+		if resp.StatusCode != http.StatusOK {
+			return fmt.Errorf("unexpected status code: %d", resp.StatusCode)
+		}
+
+		file, err := os.OpenFile(fileName, os.O_CREATE|os.O_WRONLY, os.ModePerm)
+		if err != nil {
+			return fmt.Errorf("failed to open file: %w", err)
+		}
+		defer file.Close()
+
+		if _, err := io.Copy(file, resp.Body); err != nil {
+			return fmt.Errorf("failed to write file: %w", err)
+		}
+	}
+	{
+		file, err := os.OpenFile(fileName+".go", os.O_CREATE|os.O_WRONLY, os.ModePerm)
+		if err != nil {
+			return fmt.Errorf("failed to open file: %w", err)
+		}
+		defer file.Close()
+
+		if _, err := fmt.Fprintf(file, `//go:generate go run ./generate
+//go:build %s
+// +build %s
+
+package %s
+
+import (
+	_ "embed"
+)
+
+//go:embed %s
+var %sBinary []byte
+`,
+			strings.Join(constraint, " && "),
+			strings.Join(constraint, ","),
+			pkg,
+			fileName,
+			kind,
+		); err != nil {
+			return fmt.Errorf("failed to write file: %v", err)
+		}
+	}
+	return nil
+}
+
+func main() {
+	var g sync.WaitGroup
+
+	for _, kind := range kinds {
+		for _, system := range systems {
+			for _, arch := range arches {
+				kind, system, arch := kind, system, arch
+				g.Add(1)
+				go func() {
+					defer g.Done()
+					err := download(kind, system, arch)
+					if err != nil {
+						fmt.Printf("Fail to download %s-%s-%s: %s\n", kind, system, arch, err.Error())
+					}
+				}()
+			}
+		}
+	}
+	g.Wait()
+}