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add support for tiff format

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This commit is contained in:
Milan Nikolic
2015-11-05 05:50:11 +01:00
parent 97aae5e0c7
commit 574e364954
2 changed files with 9 additions and 1 deletions
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1
README.md
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@@ -60,6 +60,7 @@ Using
--png Encode images to PNG instead of JPEG
--bmp Encode images to 4-Bit BMP (16 colors) instead of JPEG
--gif Encode images to GIF instead of JPEG
--tiff Encode images to TIFF instead of JPEG
--rgb Convert images that have RGB colorspace (use --no-rgb if you only want to convert grayscale images)
--nonimage Leave non image files in archive (use --no-nonimage to remove non image files from archive)
--grayscale Convert images to grayscale (monochromatic)

9
cbconvert.go
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@@ -86,6 +86,7 @@ type options struct {
ToPNG bool // encode images to PNG 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
ToTIFF bool // encode images to TIFF instead of JPEG
Quality int // JPEG image quality
Width int // image width
Height int // image height
@@ -122,6 +123,8 @@ func convertImage(img image.Image, index int, pathName string) {
ext = "bmp"
} else if opts.ToGIF {
ext = "gif"
} else if opts.ToTIFF {
ext = "tiff"
}
var filename string
@@ -144,6 +147,9 @@ func convertImage(img image.Image, index int, pathName string) {
} else if opts.ToGIF {
// convert image to GIF
encodeImageMagick(img, filename)
} else if opts.ToTIFF {
// convert image to TIFF
encodeImage(img, filename)
} else {
// convert image to JPEG (default)
if opts.Grayscale {
@@ -429,7 +435,7 @@ func encodeImage(i image.Image, filename string) (err error) {
err = png.Encode(f, i)
case ".tif":
case ".tiff":
err = tiff.Encode(f, i, nil)
err = tiff.Encode(f, i, &tiff.Options{tiff.Uncompressed, false})
case ".gif":
err = gif.Encode(f, i, nil)
default:
@@ -907,6 +913,7 @@ func parseFlags() {
convert.Flag("png", "Encode images to PNG instead of JPEG").BoolVar(&opts.ToPNG)
convert.Flag("bmp", "Encode images to 4-Bit BMP (16 colors) instead of JPEG").BoolVar(&opts.ToBMP)
convert.Flag("gif", "Encode images to GIF instead of JPEG").BoolVar(&opts.ToGIF)
convert.Flag("tiff", "Encode images to TIFF instead of JPEG").BoolVar(&opts.ToTIFF)
convert.Flag("rgb", "Convert images that have RGB colorspace (use --no-rgb if you only want to convert grayscale images)").Default("true").BoolVar(&opts.RGB)
convert.Flag("nonimage", "Leave non image files in archive (use --no-nonimage to remove non image files from archive)").Default("true").BoolVar(&opts.NonImage)
convert.Flag("grayscale", "Convert images to grayscale (monochromatic)").BoolVar(&opts.Grayscale)