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add gif support

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This commit is contained in:
Milan Nikolic
2015-11-03 19:47:24 +01:00
parent ca4f13ebfe
commit 4abf99a644
2 changed files with 29 additions and 7 deletions
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27
cbconvert.go
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@@ -62,7 +62,8 @@ var (
// Command line options
type options struct {
ToPNG bool // encode images to PNG instead of JPEG
ToBMP bool // encode images to 4-Bit BMP instead of JPEG
ToBMP bool // encode images to 4-Bit BMP (16 colors) instead of JPEG
ToGIF bool // encode images to GIF instead of JPEG
Quality int // JPEG image quality
NoRGB bool // do not convert images with RGB colorspace
Width uint // image width
@@ -92,6 +93,8 @@ func convertImage(img image.Image, index int, pathName string) {
ext = "png"
} else if opts.ToBMP {
ext = "bmp"
} else if opts.ToGIF {
ext = "gif"
}
var filename string
@@ -118,7 +121,7 @@ func convertImage(img image.Image, index int, pathName string) {
defer f.Close()
png.Encode(f, i)
} else if opts.ToBMP {
// convert image to 4-Bit - 16 colors BMP
// convert image to 4-Bit BMP (16 colors)
imagick.Initialize()
mw := imagick.NewMagickWand()
@@ -143,6 +146,22 @@ func convertImage(img image.Image, index int, pathName string) {
mw.SetImageCompression(imagick.COMPRESSION_NO)
mw.QuantizeImage(16, imagick.COLORSPACE_SRGB, 8, true, true)
mw.WriteImage(fmt.Sprintf("BMP3:%s", filename))
} else if opts.ToGIF {
// convert image to GIF
imagick.Initialize()
mw := imagick.NewMagickWand()
defer mw.Destroy()
b := new(bytes.Buffer)
jpeg.Encode(b, i, &jpeg.Options{jpeg.DefaultQuality})
err := mw.ReadImageBlob(b.Bytes())
if err != nil {
fmt.Fprintf(os.Stderr, "Error ReadImageBlob: %v\n", err.Error())
}
mw.SetImageFormat("gif")
mw.WriteImage(filename)
} else {
// convert image to JPEG (default)
f, err := os.Create(filename)
@@ -772,7 +791,8 @@ func parseFlags() {
kingpin.Version("CBconvert 0.3.0")
kingpin.CommandLine.Help = "Comic Book convert tool."
kingpin.Flag("png", "encode images to PNG instead of JPEG").Short('p').BoolVar(&opts.ToPNG)
kingpin.Flag("bmp", "encode images to 4-Bit BMP instead of JPEG").Short('b').BoolVar(&opts.ToBMP)
kingpin.Flag("bmp", "encode images to 4-Bit BMP (16 colors) instead of JPEG").Short('b').BoolVar(&opts.ToBMP)
kingpin.Flag("gif", "encode images to GIF instead of JPEG").Short('g').BoolVar(&opts.ToGIF)
kingpin.Flag("width", "image width").Default(strconv.Itoa(0)).Short('w').UintVar(&opts.Width)
kingpin.Flag("height", "image height").Default(strconv.Itoa(0)).Short('h').UintVar(&opts.Height)
kingpin.Flag("quality", "JPEG image quality").Short('q').Default(strconv.Itoa(jpeg.DefaultQuality)).IntVar(&opts.Quality)
@@ -797,6 +817,7 @@ func main() {
signal.Notify(c, os.Interrupt, syscall.SIGHUP, syscall.SIGTERM)
go func() {
for _ = range c {
fmt.Fprintf(os.Stderr, "Aborting\n")
os.RemoveAll(workdir)
os.Exit(1)
}