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Merge pull request #208 from mikestead/feature/webp-lossless

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Add lossless option for saving webp
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Tomás 2017-12-22 19:51:54 +01:00 • committed by GitHub
commit 262d0f82b7
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4 changed files with 7 additions and 2 deletions
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1
options.go
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@ -209,6 +209,7 @@ type Options struct {
Interlace bool Interlace bool
StripMetadata bool StripMetadata bool
Trim bool Trim bool
Lossless bool
Extend Extend Extend Extend
Rotate Angle Rotate Angle
Background Color Background Color

1
resizer.go
View file

@ -165,6 +165,7 @@ func saveImage(image *C.VipsImage, o Options) ([]byte, error) {
Interpretation: o.Interpretation, Interpretation: o.Interpretation,
OutputICC: o.OutputICC, OutputICC: o.OutputICC,
StripMetadata: o.StripMetadata, StripMetadata: o.StripMetadata,
Lossless: o.Lossless,
} }
// Finally get the resultant buffer // Finally get the resultant buffer
return vipsSave(image, saveOptions) return vipsSave(image, saveOptions)

4
vips.go
View file

@ -56,6 +56,7 @@ type vipsSaveOptions struct {
Interlace bool Interlace bool
NoProfile bool NoProfile bool
StripMetadata bool StripMetadata bool
Lossless bool
OutputICC string // Absolute path to the output ICC profile OutputICC string // Absolute path to the output ICC profile
Interpretation Interpretation Interpretation Interpretation
} }
@ -423,6 +424,7 @@ func vipsSave(image *C.VipsImage, o vipsSaveOptions) ([]byte, error) {
interlace := C.int(boolToInt(o.Interlace)) interlace := C.int(boolToInt(o.Interlace))
quality := C.int(o.Quality) quality := C.int(o.Quality)
strip := C.int(boolToInt(o.StripMetadata)) strip := C.int(boolToInt(o.StripMetadata))
lossless := C.int(boolToInt(o.Lossless))
if o.Type != 0 && !IsTypeSupportedSave(o.Type) { if o.Type != 0 && !IsTypeSupportedSave(o.Type) {
return nil, fmt.Errorf("VIPS cannot save to %#v", ImageTypes[o.Type]) return nil, fmt.Errorf("VIPS cannot save to %#v", ImageTypes[o.Type])
@ -430,7 +432,7 @@ func vipsSave(image *C.VipsImage, o vipsSaveOptions) ([]byte, error) {
var ptr unsafe.Pointer var ptr unsafe.Pointer
switch o.Type { switch o.Type {
case WEBP: case WEBP:
saveErr = C.vips_webpsave_bridge(tmpImage, &ptr, &length, strip, quality) saveErr = C.vips_webpsave_bridge(tmpImage, &ptr, &length, strip, quality, lossless)
case PNG: 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)
case TIFF: case TIFF:

3
vips.h
View file

@ -306,10 +306,11 @@ vips_pngsave_bridge(VipsImage *in, void **buf, size_t *len, int strip, int compr
} }
int int
vips_webpsave_bridge(VipsImage *in, void **buf, size_t *len, int strip, int quality) { vips_webpsave_bridge(VipsImage *in, void **buf, size_t *len, int strip, int quality, int lossless) {
return vips_webpsave_buffer(in, buf, len, return vips_webpsave_buffer(in, buf, len,
"strip", INT_TO_GBOOLEAN(strip), "strip", INT_TO_GBOOLEAN(strip),
"Q", quality, "Q", quality,
"lossless", INT_TO_GBOOLEAN(lossless),
NULL NULL
); );
} }