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Rename processing options constants and move them to processing_options.go

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This commit is contained in:
DarthSim
2018-09-07 20:45:57 +06:00
parent 5dcad5430a
commit c5adf1b3a5
6 changed files with 115 additions and 106 deletions
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108
process.go
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@@ -16,52 +16,6 @@ import (
"unsafe"
)
type imageType int
const (
UNKNOWN = C.UNKNOWN
JPEG = C.JPEG
PNG = C.PNG
WEBP = C.WEBP
GIF = C.GIF
)
var imageTypes = map[string]imageType{
"jpeg": JPEG,
"jpg": JPEG,
"png": PNG,
"webp": WEBP,
"gif": GIF,
}
type gravityType int
const (
CENTER gravityType = iota
NORTH
EAST
SOUTH
WEST
SMART
)
var gravityTypes = map[string]gravityType{
"ce": CENTER,
"no": NORTH,
"ea": EAST,
"so": SOUTH,
"we": WEST,
"sm": SMART,
}
type resizeType int
const (
FIT resizeType = iota
FILL
CROP
)
var vipsSupportSmartcrop bool
var vipsTypeSupportLoad = make(map[imageType]bool)
var vipsTypeSupportSave = make(map[imageType]bool)
@@ -98,27 +52,27 @@ func initVips() {
vipsSupportSmartcrop = C.vips_support_smartcrop() == 1
if int(C.vips_type_find_load_go(C.JPEG)) != 0 {
vipsTypeSupportLoad[JPEG] = true
if int(C.vips_type_find_load_go(imageTypeJPEG)) != 0 {
vipsTypeSupportLoad[imageTypeJPEG] = true
}
if int(C.vips_type_find_load_go(C.PNG)) != 0 {
vipsTypeSupportLoad[PNG] = true
if int(C.vips_type_find_load_go(imageTypePNG)) != 0 {
vipsTypeSupportLoad[imageTypePNG] = true
}
if int(C.vips_type_find_load_go(C.WEBP)) != 0 {
vipsTypeSupportLoad[WEBP] = true
if int(C.vips_type_find_load_go(imageTypeWEBP)) != 0 {
vipsTypeSupportLoad[imageTypeWEBP] = true
}
if int(C.vips_type_find_load_go(C.GIF)) != 0 {
vipsTypeSupportLoad[GIF] = true
if int(C.vips_type_find_load_go(imageTypeGIF)) != 0 {
vipsTypeSupportLoad[imageTypeGIF] = true
}
if int(C.vips_type_find_save_go(C.JPEG)) != 0 {
vipsTypeSupportSave[JPEG] = true
if int(C.vips_type_find_save_go(imageTypeJPEG)) != 0 {
vipsTypeSupportSave[imageTypeJPEG] = true
}
if int(C.vips_type_find_save_go(C.PNG)) != 0 {
vipsTypeSupportSave[PNG] = true
if int(C.vips_type_find_save_go(imageTypePNG)) != 0 {
vipsTypeSupportSave[imageTypePNG] = true
}
if int(C.vips_type_find_save_go(C.WEBP)) != 0 {
vipsTypeSupportSave[WEBP] = true
if int(C.vips_type_find_save_go(imageTypeWEBP)) != 0 {
vipsTypeSupportSave[imageTypeWEBP] = true
}
cConf.Quality = C.int(conf.Quality)
@@ -137,7 +91,7 @@ func shutdownVips() {
}
func randomAccessRequired(po processingOptions) int {
if po.Gravity == SMART {
if po.Gravity == gravitySmart {
return 1
}
return 0
@@ -175,7 +129,7 @@ func extractMeta(img *C.VipsImage) (int, int, int, bool) {
}
func calcScale(width, height int, po processingOptions) float64 {
if (po.Width == width && po.Height == height) || (po.Resize != FILL && po.Resize != FIT) {
if (po.Width == width && po.Height == height) || (po.Resize != resizeFill && po.Resize != resizeFit) {
return 1
}
@@ -184,7 +138,7 @@ func calcScale(width, height int, po processingOptions) float64 {
wr := fow / fsw
hr := foh / fsh
if po.Resize == FIT {
if po.Resize == resizeFit {
return math.Min(wr, hr)
}
@@ -194,7 +148,7 @@ func calcScale(width, height int, po processingOptions) float64 {
func calcShink(scale float64, imgtype imageType) int {
shrink := int(1.0 / scale)
if imgtype != JPEG {
if imgtype != imageTypeJPEG {
return shrink
}
@@ -214,19 +168,19 @@ func calcCrop(width, height int, po processingOptions) (left, top int) {
left = (width - po.Width + 1) / 2
top = (height - po.Height + 1) / 2
if po.Gravity == NORTH {
if po.Gravity == gravityNorth {
top = 0
}
if po.Gravity == EAST {
if po.Gravity == gravityEast {
left = width - po.Width
}
if po.Gravity == SOUTH {
if po.Gravity == gravitySouth {
top = height - po.Height
}
if po.Gravity == WEST {
if po.Gravity == gravityWest {
left = 0
}
@@ -237,7 +191,7 @@ func processImage(data []byte, imgtype imageType, po processingOptions, t *timer
defer C.vips_cleanup()
defer runtime.KeepAlive(data)
if po.Gravity == SMART && !vipsSupportSmartcrop {
if po.Gravity == gravitySmart && !vipsSupportSmartcrop {
return nil, errors.New("Smart crop is not supported by used version of libvips")
}
@@ -252,7 +206,7 @@ func processImage(data []byte, imgtype imageType, po processingOptions, t *timer
imgWidth, imgHeight, angle, flip := extractMeta(img)
// Ensure we won't crop out of bounds
if !po.Enlarge || po.Resize == CROP {
if !po.Enlarge || po.Resize == resizeCrop {
if imgWidth < po.Width {
po.Width = imgWidth
}
@@ -263,12 +217,12 @@ func processImage(data []byte, imgtype imageType, po processingOptions, t *timer
}
if po.Width != imgWidth || po.Height != imgHeight {
if po.Resize == FILL || po.Resize == FIT {
if po.Resize == resizeFill || po.Resize == resizeFit {
scale := calcScale(imgWidth, imgHeight, po)
// Do some shrink-on-load
if scale < 1.0 {
if imgtype == JPEG || imgtype == WEBP {
if imgtype == imageTypeJPEG || imgtype == imageTypeWEBP {
shrink := calcShink(scale, imgtype)
scale = scale * float64(shrink)
@@ -332,8 +286,8 @@ func processImage(data []byte, imgtype imageType, po processingOptions, t *timer
t.Check()
if (po.Width != imgWidth || po.Height != imgHeight) && (po.Resize == FILL || po.Resize == CROP) {
if po.Gravity == SMART {
if (po.Width != imgWidth || po.Height != imgHeight) && (po.Resize == resizeFill || po.Resize == resizeCrop) {
if po.Gravity == gravitySmart {
if err = vipsImageCopyMemory(&img); err != nil {
return nil, err
}
@@ -370,11 +324,11 @@ func vipsSaveImage(img *C.struct__VipsImage, imgtype imageType) ([]byte, error)
imgsize := C.size_t(0)
switch imgtype {
case JPEG:
case imageTypeJPEG:
err = C.vips_jpegsave_go(img, &ptr, &imgsize, 1, cConf.Quality, cConf.JpegProgressive)
case PNG:
case imageTypePNG:
err = C.vips_pngsave_go(img, &ptr, &imgsize, cConf.PngInterlaced)
case WEBP:
case imageTypeWEBP:
err = C.vips_webpsave_go(img, &ptr, &imgsize, 1, cConf.Quality)
}
if err != 0 {