84 lines
1.5 KiB
Go
84 lines
1.5 KiB
Go
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package main
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import (
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"bufio"
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"bytes"
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"fmt"
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"go/format"
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"log"
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"os"
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"os/exec"
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"strings"
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)
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func must(err error) {
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if err == nil {
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return
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}
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log.Fatal(err)
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}
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func main() {
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cmd := exec.Command("ffmpeg", "-codecs")
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outputBytes, err := cmd.Output()
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must(err)
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code := `package codecs
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var (
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`
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bufreader := bufio.NewScanner(bytes.NewReader(outputBytes))
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/*Encoders:
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V..... = Video
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A..... = Audio
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S..... = Subtitle
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.F.... = Frame-level multithreading
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..S... = Slice-level multithreading
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...X.. = Codec is experimental
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....B. = Supports draw_horiz_band
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.....D = Supports direct rendering method 1
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------
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V..... a64multi Multicolor charset for Commodore 64 (codec a64_multi)
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V..... a64multi5 Multicolor charset for Commodore 64, extended with 5th color (colram) (codec a64_multi5)*/
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waitingForList := true
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for bufreader.Scan() && waitingForList {
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text := bufreader.Text()
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if text == " -------" {
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waitingForList = false
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}
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}
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for bufreader.Scan() {
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text := bufreader.Text()
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//isVideo := text[1] == 'V'
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//isAudio := text[1] == 'A'
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//isSubtitle := text[1] == 'S'
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text = text[8:]
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cols := strings.Fields(text)
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id := cols[0]
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name := strings.Join(cols[1:], " ")
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code += fmt.Sprintf(`
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// %s
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Codec_%s = %q
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`, name, strings.ToUpper(id), id)
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}
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code += `
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)
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`
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codeBytes, err := format.Source([]byte(code))
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must(err)
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f, err := os.Create("gen_codecs.go")
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must(err)
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defer f.Close()
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_, err = f.Write(codeBytes)
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must(err)
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}
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