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support Palette option for png

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This commit is contained in:
Azuma Fan 2020-06-08 16:43:04 +08:00
parent 3a950d13cd
commit dfd363a962
4 changed files with 8 additions and 3 deletions
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1
options.go
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@ -225,4 +225,5 @@ type Options struct {
Gamma float64
OutputICC string
InputICC string
Palette bool
}

1
resizer.go
View file

@ -176,6 +176,7 @@ func saveImage(image *C.VipsImage, o Options) ([]byte, error) {
OutputICC: o.OutputICC,
StripMetadata: o.StripMetadata,
Lossless: o.Lossless,
Palette: o.Palette,
}
// Finally get the resultant buffer
return vipsSave(image, saveOptions)

4
vips.go
View file

@ -55,6 +55,7 @@ type vipsSaveOptions struct {
InputICC string // Absolute path to the input ICC profile
OutputICC string // Absolute path to the output ICC profile
Interpretation Interpretation
Palette bool
}
type vipsWatermarkOptions struct {
@ -458,6 +459,7 @@ func vipsSave(image *C.VipsImage, o vipsSaveOptions) ([]byte, error) {
quality := C.int(o.Quality)
strip := C.int(boolToInt(o.StripMetadata))
lossless := C.int(boolToInt(o.Lossless))
palette := C.int(boolToInt(o.Palette))
if o.Type != 0 && !IsTypeSupportedSave(o.Type) {
return nil, fmt.Errorf("VIPS cannot save to %#v", ImageTypes[o.Type])
@ -467,7 +469,7 @@ func vipsSave(image *C.VipsImage, o vipsSaveOptions) ([]byte, error) {
case WEBP:
saveErr = C.vips_webpsave_bridge(tmpImage, &ptr, &length, strip, quality, lossless)
case PNG:
saveErr = C.vips_pngsave_bridge(tmpImage, &ptr, &length, strip, C.int(o.Compression), quality, interlace)
saveErr = C.vips_pngsave_bridge(tmpImage, &ptr, &length, strip, C.int(o.Compression), quality, interlace, palette)
case TIFF:
saveErr = C.vips_tiffsave_bridge(tmpImage, &ptr, &length)
case HEIF:

5
vips.h
View file

@ -309,13 +309,14 @@ vips_jpegsave_bridge(VipsImage *in, void **buf, size_t *len, int strip, int qual
}
int
vips_pngsave_bridge(VipsImage *in, void **buf, size_t *len, int strip, int compression, int quality, int interlace) {
#if (VIPS_MAJOR_VERSION >= 8 || (VIPS_MAJOR_VERSION >= 7 && VIPS_MINOR_VERSION >= 42))
vips_pngsave_bridge(VipsImage *in, void **buf, size_t *len, int strip, int compression, int quality, int interlace, int palette) {
#if (VIPS_MAJOR_VERSION >= 8 && VIPS_MINOR_VERSION >= 7)
return vips_pngsave_buffer(in, buf, len,
"strip", INT_TO_GBOOLEAN(strip),
"compression", compression,
"interlace", INT_TO_GBOOLEAN(interlace),
"filter", VIPS_FOREIGN_PNG_FILTER_ALL,
"palette", INT_TO_GBOOLEAN(palette),
NULL
);
#else