draw: generate impl.go type switches.
This just the type switches to concrete-type-specific methods. Generating RGBA- or YCbCr-specific code instead of calling the general-purpose At and Set methods will be follow-up changes. benchmark old ns/op new ns/op delta BenchmarkScaleLargeDownNN 5771212 5766160 -0.09% BenchmarkScaleLargeDownAB 14057354 14023083 -0.24% BenchmarkScaleLargeDownBL 1349968635 1347746478 -0.16% BenchmarkScaleLargeDownCR 2687753329 2678909022 -0.33% BenchmarkScaleDownNN 1802408 1808723 +0.35% BenchmarkScaleDownAB 4352978 4284878 -1.56% BenchmarkScaleDownBL 29760913 29522171 -0.80% BenchmarkScaleDownCR 57666917 56334005 -2.31% BenchmarkScaleUpNN 88886450 89235790 +0.39% BenchmarkScaleUpAB 214687758 213797857 -0.41% BenchmarkScaleUpBL 119588096 119846371 +0.22% BenchmarkScaleUpCR 179784111 180662030 +0.49% BenchmarkScaleSrcUniform 4128528 3855385 -6.62% BenchmarkScaleSrcNRGBA 13275457 13375039 +0.75% BenchmarkScaleSrcRGBA 13333672 12812895 -3.91% BenchmarkScaleSrcYCbCr 14321945 14139071 -1.28% Change-Id: I28025c3b49186a12d20ee0182a4c8ff9b036d0ae Reviewed-on: https://go-review.googlesource.com/5712 Reviewed-by: Rob Pike <r@golang.org>
This commit is contained in:
Nigel Tao
parent
999c3975a8
commit
748adb17a1
124
draw/gen.go
124
draw/gen.go
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@ -43,13 +43,39 @@ func main() {
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}
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}
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// dsTypes are the space-separated (dst image type, src image type) pairs to
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// generate scale_DType_SType implementations for. The last element in the
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// slice should be the fallback pair "Image image.Image".
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var (
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// dsTypes are the (dst image type, src image type) pairs to generate
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// scale_DType_SType implementations for. The last element in the slice
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// should be the fallback pair ("Image", "image.Image").
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//
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// TODO: add more concrete types: *image.RGBA, *image.YCbCr, etc.
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var dsTypes = []string{
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"Image image.Image",
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// TODO: add *image.CMYK src type after Go 1.5 is released.
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dsTypes = []struct{ dType, sType string }{
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{"*image.RGBA", "*image.NRGBA"},
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{"*image.RGBA", "*image.RGBA"},
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{"*image.RGBA", "*image.Uniform"},
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{"*image.RGBA", "*image.YCbCr"},
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{"*image.RGBA", "image.Image"},
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{"Image", "image.Image"},
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}
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dTypes, sTypes []string
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sTypesForDType = map[string][]string{}
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)
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func init() {
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dTypesSeen := map[string]bool{}
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sTypesSeen := map[string]bool{}
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for _, t := range dsTypes {
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if !sTypesSeen[t.sType] {
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sTypesSeen[t.sType] = true
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sTypes = append(sTypes, t.sType)
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}
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if !dTypesSeen[t.dType] {
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dTypesSeen[t.dType] = true
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dTypes = append(dTypes, t.dType)
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}
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sTypesForDType[t.dType] = append(sTypesForDType[t.dType], t.sType)
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}
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sTypesForDType["anyDType"] = sTypes
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}
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type data struct {
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@ -60,12 +86,10 @@ type data struct {
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func gen(w *bytes.Buffer, receiver string, code string) {
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expn(w, codeRoot, &data{receiver: receiver})
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for _, dsType := range dsTypes {
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dType, sType := split(dsType, " ")
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for _, t := range dsTypes {
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expn(w, code, &data{
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dType: dType,
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sType: sType,
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dType: t.dType,
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sType: t.sType,
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receiver: receiver,
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})
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}
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@ -73,28 +97,25 @@ func gen(w *bytes.Buffer, receiver string, code string) {
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func genKernel(w *bytes.Buffer) {
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expn(w, codeKernelRoot, &data{})
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dTypesSeen := map[string]bool{}
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sTypesSeen := map[string]bool{}
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for _, dsType := range dsTypes {
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dType, sType := split(dsType, " ")
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if !sTypesSeen[sType] {
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sTypesSeen[sType] = true
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for _, sType := range sTypes {
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expn(w, codeKernelLeafX, &data{
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sType: sType,
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})
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}
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if !dTypesSeen[dType] {
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dTypesSeen[dType] = true
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for _, dType := range dTypes {
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expn(w, codeKernelLeafY, &data{
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dType: dType,
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})
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}
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}
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}
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func expn(w *bytes.Buffer, code string, d *data) {
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for _, line := range strings.Split(code, "\n") {
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fmt.Fprintln(w, expnLine(line, d))
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}
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}
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func expnLine(line string, d *data) string {
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for {
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i := strings.IndexByte(line, '$')
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if i < 0 {
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@ -111,17 +132,16 @@ func expn(w *bytes.Buffer, code string, d *data) {
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}
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dollar, suffix := s[:i], s[i:]
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e := expnLine(prefix, dollar, suffix, d)
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e := expnDollar(prefix, dollar, suffix, d)
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if e == "" {
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log.Fatalf("couldn't expand %q", line)
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}
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line = e
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}
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fmt.Fprintln(w, line)
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}
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return line
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}
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func expnLine(prefix, dollar, suffix string, d *data) string {
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func expnDollar(prefix, dollar, suffix string, d *data) string {
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switch dollar {
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case "dType":
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return prefix + d.dType + suffix
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@ -134,8 +154,15 @@ func expnLine(prefix, dollar, suffix string, d *data) string {
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case "receiver":
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return prefix + d.receiver + suffix
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case "switch":
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return expnSwitch("", true, suffix)
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case "switchD":
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return expnSwitch("", false, suffix)
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case "switchS":
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return expnSwitch("anyDType", false, suffix)
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case "dstColorDecl":
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if d.dType == "Image" {
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if d.dType == "Image" || d.dType == "*image.RGBA" { // TODO: separate code for concrete types.
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return "dstColorRGBA64 := &color.RGBA64{}\n" +
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"dstColor := color.Color(dstColorRGBA64)"
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}
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@ -165,7 +192,7 @@ func expnLine(prefix, dollar, suffix string, d *data) string {
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switch d.dType {
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default:
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log.Fatalf("bad dType %q", d.dType)
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case "Image":
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case "Image", "*image.RGBA": // TODO: separate code for concrete types.
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return fmt.Sprintf(""+
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"dstColorRGBA64.R = uint16(%sr)\n"+
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"dstColorRGBA64.G = uint16(%sg)\n"+
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@ -185,7 +212,7 @@ func expnLine(prefix, dollar, suffix string, d *data) string {
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switch d.dType {
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default:
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log.Fatalf("bad dType %q", d.dType)
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case "Image":
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case "Image", "*image.RGBA": // TODO: separate code for concrete types.
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return fmt.Sprintf(""+
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"dstColorRGBA64.R = ftou(%sr * %s)\n"+
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"dstColorRGBA64.G = ftou(%sg * %s)\n"+
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@ -216,7 +243,7 @@ func expnLine(prefix, dollar, suffix string, d *data) string {
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switch d.sType {
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default:
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log.Fatalf("bad sType %q", d.sType)
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case "image.Image":
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case "image.Image", "*image.NRGBA", "*image.RGBA", "*image.Uniform", "*image.YCbCr": // TODO: separate code for concrete types.
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fmt.Fprintf(buf, "%sr%s, %sg%s, %sb%s, %sa%s := "+
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"src.At(sp.X + int(%s), sp.Y+int(%s)).RGBA()\n",
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lhs, tmp, lhs, tmp, lhs, tmp, lhs, tmp, args[0], args[1])
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@ -240,6 +267,37 @@ func expnLine(prefix, dollar, suffix string, d *data) string {
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return ""
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}
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func expnSwitch(dType string, expandBoth bool, template string) string {
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switchVar := "dst"
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if dType != "" {
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switchVar = "src"
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}
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lines := []string{fmt.Sprintf("switch %s := %s.(type) {", switchVar, switchVar)}
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fallback, values := "Image", dTypes
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if dType != "" {
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fallback, values = "image.Image", sTypesForDType[dType]
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}
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for _, v := range values {
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if v == fallback {
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lines = append(lines, "default:")
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} else {
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lines = append(lines, fmt.Sprintf("case %s:", v))
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}
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if dType != "" {
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lines = append(lines, expnLine(template, &data{dType: dType, sType: v}))
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} else if !expandBoth {
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lines = append(lines, expnLine(template, &data{dType: v}))
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} else {
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lines = append(lines, expnSwitch(v, false, template))
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}
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}
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lines = append(lines, "}")
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return strings.Join(lines, "\n")
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}
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func split(s, sep string) (string, string) {
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if i := strings.Index(s, sep); i >= 0 {
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return strings.TrimSpace(s[:i]), strings.TrimSpace(s[i+len(sep):])
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@ -289,8 +347,7 @@ const (
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if z.dw <= 0 || z.dh <= 0 || z.sw <= 0 || z.sh <= 0 {
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return
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}
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// TODO: generate type switches for the different dsTypes.
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z.scale_Image_Image(dst, dp, src, sp)
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$switch z.scale_$dTypeRN_$sTypeRN(dst, dp, src, sp)
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}
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`
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@ -362,9 +419,8 @@ const (
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// scaleY distributes the temporary image's rows over the destination image.
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// TODO: is it worth having a sync.Pool for this temporary buffer?
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tmp := make([][4]float64, z.dw*z.sh)
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// TODO: generate type switches for the different dTypes and sTypes.
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z.scaleX_Image(tmp, src, sp)
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z.scaleY_Image(dst, dp, tmp)
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$switchS z.scaleX_$sTypeRN(tmp, src, sp)
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$switchD z.scaleY_$dTypeRN(dst, dp, tmp)
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}
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`
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616
draw/impl.go
616
draw/impl.go
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@ -11,9 +11,112 @@ func (z *nnScaler) Scale(dst Image, dp image.Point, src image.Image, sp image.Po
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if z.dw <= 0 || z.dh <= 0 || z.sw <= 0 || z.sh <= 0 {
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return
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}
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// TODO: generate type switches for the different dsTypes.
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switch dst := dst.(type) {
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case *image.RGBA:
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switch src := src.(type) {
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case *image.NRGBA:
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z.scale_RGBA_NRGBA(dst, dp, src, sp)
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case *image.RGBA:
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z.scale_RGBA_RGBA(dst, dp, src, sp)
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case *image.Uniform:
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z.scale_RGBA_Uniform(dst, dp, src, sp)
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case *image.YCbCr:
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z.scale_RGBA_YCbCr(dst, dp, src, sp)
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default:
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z.scale_RGBA_Image(dst, dp, src, sp)
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}
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default:
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switch src := src.(type) {
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default:
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z.scale_Image_Image(dst, dp, src, sp)
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}
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}
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}
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func (z *nnScaler) scale_RGBA_NRGBA(dst *image.RGBA, dp image.Point, src *image.NRGBA, sp image.Point) {
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dstColorRGBA64 := &color.RGBA64{}
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dstColor := color.Color(dstColorRGBA64)
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for dy := int32(0); dy < z.dh; dy++ {
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sy := (2*uint64(dy) + 1) * uint64(z.sh) / (2 * uint64(z.dh))
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for dx := int32(0); dx < z.dw; dx++ {
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sx := (2*uint64(dx) + 1) * uint64(z.sw) / (2 * uint64(z.dw))
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pr, pg, pb, pa := src.At(sp.X+int(sx), sp.Y+int(sy)).RGBA()
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dstColorRGBA64.R = uint16(pr)
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dstColorRGBA64.G = uint16(pg)
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dstColorRGBA64.B = uint16(pb)
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dstColorRGBA64.A = uint16(pa)
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dst.Set(dp.X+int(dx), dp.Y+int(dy), dstColor)
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}
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}
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}
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func (z *nnScaler) scale_RGBA_RGBA(dst *image.RGBA, dp image.Point, src *image.RGBA, sp image.Point) {
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dstColorRGBA64 := &color.RGBA64{}
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dstColor := color.Color(dstColorRGBA64)
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for dy := int32(0); dy < z.dh; dy++ {
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sy := (2*uint64(dy) + 1) * uint64(z.sh) / (2 * uint64(z.dh))
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for dx := int32(0); dx < z.dw; dx++ {
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sx := (2*uint64(dx) + 1) * uint64(z.sw) / (2 * uint64(z.dw))
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pr, pg, pb, pa := src.At(sp.X+int(sx), sp.Y+int(sy)).RGBA()
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dstColorRGBA64.R = uint16(pr)
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dstColorRGBA64.G = uint16(pg)
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dstColorRGBA64.B = uint16(pb)
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dstColorRGBA64.A = uint16(pa)
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dst.Set(dp.X+int(dx), dp.Y+int(dy), dstColor)
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}
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}
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}
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func (z *nnScaler) scale_RGBA_Uniform(dst *image.RGBA, dp image.Point, src *image.Uniform, sp image.Point) {
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dstColorRGBA64 := &color.RGBA64{}
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dstColor := color.Color(dstColorRGBA64)
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for dy := int32(0); dy < z.dh; dy++ {
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sy := (2*uint64(dy) + 1) * uint64(z.sh) / (2 * uint64(z.dh))
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for dx := int32(0); dx < z.dw; dx++ {
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sx := (2*uint64(dx) + 1) * uint64(z.sw) / (2 * uint64(z.dw))
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pr, pg, pb, pa := src.At(sp.X+int(sx), sp.Y+int(sy)).RGBA()
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dstColorRGBA64.R = uint16(pr)
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dstColorRGBA64.G = uint16(pg)
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dstColorRGBA64.B = uint16(pb)
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dstColorRGBA64.A = uint16(pa)
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dst.Set(dp.X+int(dx), dp.Y+int(dy), dstColor)
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}
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}
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}
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func (z *nnScaler) scale_RGBA_YCbCr(dst *image.RGBA, dp image.Point, src *image.YCbCr, sp image.Point) {
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dstColorRGBA64 := &color.RGBA64{}
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dstColor := color.Color(dstColorRGBA64)
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for dy := int32(0); dy < z.dh; dy++ {
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sy := (2*uint64(dy) + 1) * uint64(z.sh) / (2 * uint64(z.dh))
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for dx := int32(0); dx < z.dw; dx++ {
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sx := (2*uint64(dx) + 1) * uint64(z.sw) / (2 * uint64(z.dw))
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pr, pg, pb, pa := src.At(sp.X+int(sx), sp.Y+int(sy)).RGBA()
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dstColorRGBA64.R = uint16(pr)
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dstColorRGBA64.G = uint16(pg)
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dstColorRGBA64.B = uint16(pb)
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dstColorRGBA64.A = uint16(pa)
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dst.Set(dp.X+int(dx), dp.Y+int(dy), dstColor)
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}
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}
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}
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func (z *nnScaler) scale_RGBA_Image(dst *image.RGBA, dp image.Point, src image.Image, sp image.Point) {
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dstColorRGBA64 := &color.RGBA64{}
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dstColor := color.Color(dstColorRGBA64)
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for dy := int32(0); dy < z.dh; dy++ {
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sy := (2*uint64(dy) + 1) * uint64(z.sh) / (2 * uint64(z.dh))
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for dx := int32(0); dx < z.dw; dx++ {
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sx := (2*uint64(dx) + 1) * uint64(z.sw) / (2 * uint64(z.dw))
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pr, pg, pb, pa := src.At(sp.X+int(sx), sp.Y+int(sy)).RGBA()
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dstColorRGBA64.R = uint16(pr)
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dstColorRGBA64.G = uint16(pg)
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dstColorRGBA64.B = uint16(pb)
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dstColorRGBA64.A = uint16(pa)
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dst.Set(dp.X+int(dx), dp.Y+int(dy), dstColor)
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}
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}
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}
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func (z *nnScaler) scale_Image_Image(dst Image, dp image.Point, src image.Image, sp image.Point) {
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dstColorRGBA64 := &color.RGBA64{}
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@ -36,9 +139,387 @@ func (z *ablScaler) Scale(dst Image, dp image.Point, src image.Image, sp image.P
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if z.dw <= 0 || z.dh <= 0 || z.sw <= 0 || z.sh <= 0 {
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return
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}
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// TODO: generate type switches for the different dsTypes.
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switch dst := dst.(type) {
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case *image.RGBA:
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switch src := src.(type) {
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case *image.NRGBA:
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z.scale_RGBA_NRGBA(dst, dp, src, sp)
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case *image.RGBA:
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z.scale_RGBA_RGBA(dst, dp, src, sp)
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case *image.Uniform:
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z.scale_RGBA_Uniform(dst, dp, src, sp)
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case *image.YCbCr:
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z.scale_RGBA_YCbCr(dst, dp, src, sp)
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default:
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z.scale_RGBA_Image(dst, dp, src, sp)
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}
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default:
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switch src := src.(type) {
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default:
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z.scale_Image_Image(dst, dp, src, sp)
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}
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}
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}
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func (z *ablScaler) scale_RGBA_NRGBA(dst *image.RGBA, dp image.Point, src *image.NRGBA, sp image.Point) {
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yscale := float64(z.sh) / float64(z.dh)
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xscale := float64(z.sw) / float64(z.dw)
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dstColorRGBA64 := &color.RGBA64{}
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dstColor := color.Color(dstColorRGBA64)
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for dy := int32(0); dy < z.dh; dy++ {
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sy := (float64(dy)+0.5)*yscale - 0.5
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sy0 := int32(sy)
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yFrac0 := sy - float64(sy0)
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yFrac1 := 1 - yFrac0
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sy1 := sy0 + 1
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if sy < 0 {
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sy0, sy1 = 0, 0
|
||||
yFrac0, yFrac1 = 0, 1
|
||||
} else if sy1 >= z.sh {
|
||||
sy1 = sy0
|
||||
yFrac0, yFrac1 = 1, 0
|
||||
}
|
||||
for dx := int32(0); dx < z.dw; dx++ {
|
||||
sx := (float64(dx)+0.5)*xscale - 0.5
|
||||
sx0 := int32(sx)
|
||||
xFrac0 := sx - float64(sx0)
|
||||
xFrac1 := 1 - xFrac0
|
||||
sx1 := sx0 + 1
|
||||
if sx < 0 {
|
||||
sx0, sx1 = 0, 0
|
||||
xFrac0, xFrac1 = 0, 1
|
||||
} else if sx1 >= z.sw {
|
||||
sx1 = sx0
|
||||
xFrac0, xFrac1 = 1, 0
|
||||
}
|
||||
s00ru, s00gu, s00bu, s00au := src.At(sp.X+int(sx0), sp.Y+int(sy0)).RGBA()
|
||||
s00r := float64(s00ru)
|
||||
s00g := float64(s00gu)
|
||||
s00b := float64(s00bu)
|
||||
s00a := float64(s00au)
|
||||
s10ru, s10gu, s10bu, s10au := src.At(sp.X+int(sx1), sp.Y+int(sy0)).RGBA()
|
||||
s10r := float64(s10ru)
|
||||
s10g := float64(s10gu)
|
||||
s10b := float64(s10bu)
|
||||
s10a := float64(s10au)
|
||||
s10r = xFrac1*s00r + xFrac0*s10r
|
||||
s10g = xFrac1*s00g + xFrac0*s10g
|
||||
s10b = xFrac1*s00b + xFrac0*s10b
|
||||
s10a = xFrac1*s00a + xFrac0*s10a
|
||||
s01ru, s01gu, s01bu, s01au := src.At(sp.X+int(sx0), sp.Y+int(sy1)).RGBA()
|
||||
s01r := float64(s01ru)
|
||||
s01g := float64(s01gu)
|
||||
s01b := float64(s01bu)
|
||||
s01a := float64(s01au)
|
||||
s11ru, s11gu, s11bu, s11au := src.At(sp.X+int(sx1), sp.Y+int(sy1)).RGBA()
|
||||
s11r := float64(s11ru)
|
||||
s11g := float64(s11gu)
|
||||
s11b := float64(s11bu)
|
||||
s11a := float64(s11au)
|
||||
s11r = xFrac1*s01r + xFrac0*s11r
|
||||
s11g = xFrac1*s01g + xFrac0*s11g
|
||||
s11b = xFrac1*s01b + xFrac0*s11b
|
||||
s11a = xFrac1*s01a + xFrac0*s11a
|
||||
s11r = yFrac1*s10r + yFrac0*s11r
|
||||
s11g = yFrac1*s10g + yFrac0*s11g
|
||||
s11b = yFrac1*s10b + yFrac0*s11b
|
||||
s11a = yFrac1*s10a + yFrac0*s11a
|
||||
dstColorRGBA64.R = uint16(s11r)
|
||||
dstColorRGBA64.G = uint16(s11g)
|
||||
dstColorRGBA64.B = uint16(s11b)
|
||||
dstColorRGBA64.A = uint16(s11a)
|
||||
dst.Set(dp.X+int(dx), dp.Y+int(dy), dstColor)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (z *ablScaler) scale_RGBA_RGBA(dst *image.RGBA, dp image.Point, src *image.RGBA, sp image.Point) {
|
||||
yscale := float64(z.sh) / float64(z.dh)
|
||||
xscale := float64(z.sw) / float64(z.dw)
|
||||
dstColorRGBA64 := &color.RGBA64{}
|
||||
dstColor := color.Color(dstColorRGBA64)
|
||||
for dy := int32(0); dy < z.dh; dy++ {
|
||||
sy := (float64(dy)+0.5)*yscale - 0.5
|
||||
sy0 := int32(sy)
|
||||
yFrac0 := sy - float64(sy0)
|
||||
yFrac1 := 1 - yFrac0
|
||||
sy1 := sy0 + 1
|
||||
if sy < 0 {
|
||||
sy0, sy1 = 0, 0
|
||||
yFrac0, yFrac1 = 0, 1
|
||||
} else if sy1 >= z.sh {
|
||||
sy1 = sy0
|
||||
yFrac0, yFrac1 = 1, 0
|
||||
}
|
||||
for dx := int32(0); dx < z.dw; dx++ {
|
||||
sx := (float64(dx)+0.5)*xscale - 0.5
|
||||
sx0 := int32(sx)
|
||||
xFrac0 := sx - float64(sx0)
|
||||
xFrac1 := 1 - xFrac0
|
||||
sx1 := sx0 + 1
|
||||
if sx < 0 {
|
||||
sx0, sx1 = 0, 0
|
||||
xFrac0, xFrac1 = 0, 1
|
||||
} else if sx1 >= z.sw {
|
||||
sx1 = sx0
|
||||
xFrac0, xFrac1 = 1, 0
|
||||
}
|
||||
s00ru, s00gu, s00bu, s00au := src.At(sp.X+int(sx0), sp.Y+int(sy0)).RGBA()
|
||||
s00r := float64(s00ru)
|
||||
s00g := float64(s00gu)
|
||||
s00b := float64(s00bu)
|
||||
s00a := float64(s00au)
|
||||
s10ru, s10gu, s10bu, s10au := src.At(sp.X+int(sx1), sp.Y+int(sy0)).RGBA()
|
||||
s10r := float64(s10ru)
|
||||
s10g := float64(s10gu)
|
||||
s10b := float64(s10bu)
|
||||
s10a := float64(s10au)
|
||||
s10r = xFrac1*s00r + xFrac0*s10r
|
||||
s10g = xFrac1*s00g + xFrac0*s10g
|
||||
s10b = xFrac1*s00b + xFrac0*s10b
|
||||
s10a = xFrac1*s00a + xFrac0*s10a
|
||||
s01ru, s01gu, s01bu, s01au := src.At(sp.X+int(sx0), sp.Y+int(sy1)).RGBA()
|
||||
s01r := float64(s01ru)
|
||||
s01g := float64(s01gu)
|
||||
s01b := float64(s01bu)
|
||||
s01a := float64(s01au)
|
||||
s11ru, s11gu, s11bu, s11au := src.At(sp.X+int(sx1), sp.Y+int(sy1)).RGBA()
|
||||
s11r := float64(s11ru)
|
||||
s11g := float64(s11gu)
|
||||
s11b := float64(s11bu)
|
||||
s11a := float64(s11au)
|
||||
s11r = xFrac1*s01r + xFrac0*s11r
|
||||
s11g = xFrac1*s01g + xFrac0*s11g
|
||||
s11b = xFrac1*s01b + xFrac0*s11b
|
||||
s11a = xFrac1*s01a + xFrac0*s11a
|
||||
s11r = yFrac1*s10r + yFrac0*s11r
|
||||
s11g = yFrac1*s10g + yFrac0*s11g
|
||||
s11b = yFrac1*s10b + yFrac0*s11b
|
||||
s11a = yFrac1*s10a + yFrac0*s11a
|
||||
dstColorRGBA64.R = uint16(s11r)
|
||||
dstColorRGBA64.G = uint16(s11g)
|
||||
dstColorRGBA64.B = uint16(s11b)
|
||||
dstColorRGBA64.A = uint16(s11a)
|
||||
dst.Set(dp.X+int(dx), dp.Y+int(dy), dstColor)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (z *ablScaler) scale_RGBA_Uniform(dst *image.RGBA, dp image.Point, src *image.Uniform, sp image.Point) {
|
||||
yscale := float64(z.sh) / float64(z.dh)
|
||||
xscale := float64(z.sw) / float64(z.dw)
|
||||
dstColorRGBA64 := &color.RGBA64{}
|
||||
dstColor := color.Color(dstColorRGBA64)
|
||||
for dy := int32(0); dy < z.dh; dy++ {
|
||||
sy := (float64(dy)+0.5)*yscale - 0.5
|
||||
sy0 := int32(sy)
|
||||
yFrac0 := sy - float64(sy0)
|
||||
yFrac1 := 1 - yFrac0
|
||||
sy1 := sy0 + 1
|
||||
if sy < 0 {
|
||||
sy0, sy1 = 0, 0
|
||||
yFrac0, yFrac1 = 0, 1
|
||||
} else if sy1 >= z.sh {
|
||||
sy1 = sy0
|
||||
yFrac0, yFrac1 = 1, 0
|
||||
}
|
||||
for dx := int32(0); dx < z.dw; dx++ {
|
||||
sx := (float64(dx)+0.5)*xscale - 0.5
|
||||
sx0 := int32(sx)
|
||||
xFrac0 := sx - float64(sx0)
|
||||
xFrac1 := 1 - xFrac0
|
||||
sx1 := sx0 + 1
|
||||
if sx < 0 {
|
||||
sx0, sx1 = 0, 0
|
||||
xFrac0, xFrac1 = 0, 1
|
||||
} else if sx1 >= z.sw {
|
||||
sx1 = sx0
|
||||
xFrac0, xFrac1 = 1, 0
|
||||
}
|
||||
s00ru, s00gu, s00bu, s00au := src.At(sp.X+int(sx0), sp.Y+int(sy0)).RGBA()
|
||||
s00r := float64(s00ru)
|
||||
s00g := float64(s00gu)
|
||||
s00b := float64(s00bu)
|
||||
s00a := float64(s00au)
|
||||
s10ru, s10gu, s10bu, s10au := src.At(sp.X+int(sx1), sp.Y+int(sy0)).RGBA()
|
||||
s10r := float64(s10ru)
|
||||
s10g := float64(s10gu)
|
||||
s10b := float64(s10bu)
|
||||
s10a := float64(s10au)
|
||||
s10r = xFrac1*s00r + xFrac0*s10r
|
||||
s10g = xFrac1*s00g + xFrac0*s10g
|
||||
s10b = xFrac1*s00b + xFrac0*s10b
|
||||
s10a = xFrac1*s00a + xFrac0*s10a
|
||||
s01ru, s01gu, s01bu, s01au := src.At(sp.X+int(sx0), sp.Y+int(sy1)).RGBA()
|
||||
s01r := float64(s01ru)
|
||||
s01g := float64(s01gu)
|
||||
s01b := float64(s01bu)
|
||||
s01a := float64(s01au)
|
||||
s11ru, s11gu, s11bu, s11au := src.At(sp.X+int(sx1), sp.Y+int(sy1)).RGBA()
|
||||
s11r := float64(s11ru)
|
||||
s11g := float64(s11gu)
|
||||
s11b := float64(s11bu)
|
||||
s11a := float64(s11au)
|
||||
s11r = xFrac1*s01r + xFrac0*s11r
|
||||
s11g = xFrac1*s01g + xFrac0*s11g
|
||||
s11b = xFrac1*s01b + xFrac0*s11b
|
||||
s11a = xFrac1*s01a + xFrac0*s11a
|
||||
s11r = yFrac1*s10r + yFrac0*s11r
|
||||
s11g = yFrac1*s10g + yFrac0*s11g
|
||||
s11b = yFrac1*s10b + yFrac0*s11b
|
||||
s11a = yFrac1*s10a + yFrac0*s11a
|
||||
dstColorRGBA64.R = uint16(s11r)
|
||||
dstColorRGBA64.G = uint16(s11g)
|
||||
dstColorRGBA64.B = uint16(s11b)
|
||||
dstColorRGBA64.A = uint16(s11a)
|
||||
dst.Set(dp.X+int(dx), dp.Y+int(dy), dstColor)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (z *ablScaler) scale_RGBA_YCbCr(dst *image.RGBA, dp image.Point, src *image.YCbCr, sp image.Point) {
|
||||
yscale := float64(z.sh) / float64(z.dh)
|
||||
xscale := float64(z.sw) / float64(z.dw)
|
||||
dstColorRGBA64 := &color.RGBA64{}
|
||||
dstColor := color.Color(dstColorRGBA64)
|
||||
for dy := int32(0); dy < z.dh; dy++ {
|
||||
sy := (float64(dy)+0.5)*yscale - 0.5
|
||||
sy0 := int32(sy)
|
||||
yFrac0 := sy - float64(sy0)
|
||||
yFrac1 := 1 - yFrac0
|
||||
sy1 := sy0 + 1
|
||||
if sy < 0 {
|
||||
sy0, sy1 = 0, 0
|
||||
yFrac0, yFrac1 = 0, 1
|
||||
} else if sy1 >= z.sh {
|
||||
sy1 = sy0
|
||||
yFrac0, yFrac1 = 1, 0
|
||||
}
|
||||
for dx := int32(0); dx < z.dw; dx++ {
|
||||
sx := (float64(dx)+0.5)*xscale - 0.5
|
||||
sx0 := int32(sx)
|
||||
xFrac0 := sx - float64(sx0)
|
||||
xFrac1 := 1 - xFrac0
|
||||
sx1 := sx0 + 1
|
||||
if sx < 0 {
|
||||
sx0, sx1 = 0, 0
|
||||
xFrac0, xFrac1 = 0, 1
|
||||
} else if sx1 >= z.sw {
|
||||
sx1 = sx0
|
||||
xFrac0, xFrac1 = 1, 0
|
||||
}
|
||||
s00ru, s00gu, s00bu, s00au := src.At(sp.X+int(sx0), sp.Y+int(sy0)).RGBA()
|
||||
s00r := float64(s00ru)
|
||||
s00g := float64(s00gu)
|
||||
s00b := float64(s00bu)
|
||||
s00a := float64(s00au)
|
||||
s10ru, s10gu, s10bu, s10au := src.At(sp.X+int(sx1), sp.Y+int(sy0)).RGBA()
|
||||
s10r := float64(s10ru)
|
||||
s10g := float64(s10gu)
|
||||
s10b := float64(s10bu)
|
||||
s10a := float64(s10au)
|
||||
s10r = xFrac1*s00r + xFrac0*s10r
|
||||
s10g = xFrac1*s00g + xFrac0*s10g
|
||||
s10b = xFrac1*s00b + xFrac0*s10b
|
||||
s10a = xFrac1*s00a + xFrac0*s10a
|
||||
s01ru, s01gu, s01bu, s01au := src.At(sp.X+int(sx0), sp.Y+int(sy1)).RGBA()
|
||||
s01r := float64(s01ru)
|
||||
s01g := float64(s01gu)
|
||||
s01b := float64(s01bu)
|
||||
s01a := float64(s01au)
|
||||
s11ru, s11gu, s11bu, s11au := src.At(sp.X+int(sx1), sp.Y+int(sy1)).RGBA()
|
||||
s11r := float64(s11ru)
|
||||
s11g := float64(s11gu)
|
||||
s11b := float64(s11bu)
|
||||
s11a := float64(s11au)
|
||||
s11r = xFrac1*s01r + xFrac0*s11r
|
||||
s11g = xFrac1*s01g + xFrac0*s11g
|
||||
s11b = xFrac1*s01b + xFrac0*s11b
|
||||
s11a = xFrac1*s01a + xFrac0*s11a
|
||||
s11r = yFrac1*s10r + yFrac0*s11r
|
||||
s11g = yFrac1*s10g + yFrac0*s11g
|
||||
s11b = yFrac1*s10b + yFrac0*s11b
|
||||
s11a = yFrac1*s10a + yFrac0*s11a
|
||||
dstColorRGBA64.R = uint16(s11r)
|
||||
dstColorRGBA64.G = uint16(s11g)
|
||||
dstColorRGBA64.B = uint16(s11b)
|
||||
dstColorRGBA64.A = uint16(s11a)
|
||||
dst.Set(dp.X+int(dx), dp.Y+int(dy), dstColor)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (z *ablScaler) scale_RGBA_Image(dst *image.RGBA, dp image.Point, src image.Image, sp image.Point) {
|
||||
yscale := float64(z.sh) / float64(z.dh)
|
||||
xscale := float64(z.sw) / float64(z.dw)
|
||||
dstColorRGBA64 := &color.RGBA64{}
|
||||
dstColor := color.Color(dstColorRGBA64)
|
||||
for dy := int32(0); dy < z.dh; dy++ {
|
||||
sy := (float64(dy)+0.5)*yscale - 0.5
|
||||
sy0 := int32(sy)
|
||||
yFrac0 := sy - float64(sy0)
|
||||
yFrac1 := 1 - yFrac0
|
||||
sy1 := sy0 + 1
|
||||
if sy < 0 {
|
||||
sy0, sy1 = 0, 0
|
||||
yFrac0, yFrac1 = 0, 1
|
||||
} else if sy1 >= z.sh {
|
||||
sy1 = sy0
|
||||
yFrac0, yFrac1 = 1, 0
|
||||
}
|
||||
for dx := int32(0); dx < z.dw; dx++ {
|
||||
sx := (float64(dx)+0.5)*xscale - 0.5
|
||||
sx0 := int32(sx)
|
||||
xFrac0 := sx - float64(sx0)
|
||||
xFrac1 := 1 - xFrac0
|
||||
sx1 := sx0 + 1
|
||||
if sx < 0 {
|
||||
sx0, sx1 = 0, 0
|
||||
xFrac0, xFrac1 = 0, 1
|
||||
} else if sx1 >= z.sw {
|
||||
sx1 = sx0
|
||||
xFrac0, xFrac1 = 1, 0
|
||||
}
|
||||
s00ru, s00gu, s00bu, s00au := src.At(sp.X+int(sx0), sp.Y+int(sy0)).RGBA()
|
||||
s00r := float64(s00ru)
|
||||
s00g := float64(s00gu)
|
||||
s00b := float64(s00bu)
|
||||
s00a := float64(s00au)
|
||||
s10ru, s10gu, s10bu, s10au := src.At(sp.X+int(sx1), sp.Y+int(sy0)).RGBA()
|
||||
s10r := float64(s10ru)
|
||||
s10g := float64(s10gu)
|
||||
s10b := float64(s10bu)
|
||||
s10a := float64(s10au)
|
||||
s10r = xFrac1*s00r + xFrac0*s10r
|
||||
s10g = xFrac1*s00g + xFrac0*s10g
|
||||
s10b = xFrac1*s00b + xFrac0*s10b
|
||||
s10a = xFrac1*s00a + xFrac0*s10a
|
||||
s01ru, s01gu, s01bu, s01au := src.At(sp.X+int(sx0), sp.Y+int(sy1)).RGBA()
|
||||
s01r := float64(s01ru)
|
||||
s01g := float64(s01gu)
|
||||
s01b := float64(s01bu)
|
||||
s01a := float64(s01au)
|
||||
s11ru, s11gu, s11bu, s11au := src.At(sp.X+int(sx1), sp.Y+int(sy1)).RGBA()
|
||||
s11r := float64(s11ru)
|
||||
s11g := float64(s11gu)
|
||||
s11b := float64(s11bu)
|
||||
s11a := float64(s11au)
|
||||
s11r = xFrac1*s01r + xFrac0*s11r
|
||||
s11g = xFrac1*s01g + xFrac0*s11g
|
||||
s11b = xFrac1*s01b + xFrac0*s11b
|
||||
s11a = xFrac1*s01a + xFrac0*s11a
|
||||
s11r = yFrac1*s10r + yFrac0*s11r
|
||||
s11g = yFrac1*s10g + yFrac0*s11g
|
||||
s11b = yFrac1*s10b + yFrac0*s11b
|
||||
s11a = yFrac1*s10a + yFrac0*s11a
|
||||
dstColorRGBA64.R = uint16(s11r)
|
||||
dstColorRGBA64.G = uint16(s11g)
|
||||
dstColorRGBA64.B = uint16(s11b)
|
||||
dstColorRGBA64.A = uint16(s11a)
|
||||
dst.Set(dp.X+int(dx), dp.Y+int(dy), dstColor)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (z *ablScaler) scale_Image_Image(dst Image, dp image.Point, src image.Image, sp image.Point) {
|
||||
yscale := float64(z.sh) / float64(z.dh)
|
||||
|
|
@ -121,10 +602,117 @@ func (z *kernelScaler) Scale(dst Image, dp image.Point, src image.Image, sp imag
|
|||
// scaleY distributes the temporary image's rows over the destination image.
|
||||
// TODO: is it worth having a sync.Pool for this temporary buffer?
|
||||
tmp := make([][4]float64, z.dw*z.sh)
|
||||
// TODO: generate type switches for the different dTypes and sTypes.
|
||||
switch src := src.(type) {
|
||||
case *image.NRGBA:
|
||||
z.scaleX_NRGBA(tmp, src, sp)
|
||||
case *image.RGBA:
|
||||
z.scaleX_RGBA(tmp, src, sp)
|
||||
case *image.Uniform:
|
||||
z.scaleX_Uniform(tmp, src, sp)
|
||||
case *image.YCbCr:
|
||||
z.scaleX_YCbCr(tmp, src, sp)
|
||||
default:
|
||||
z.scaleX_Image(tmp, src, sp)
|
||||
}
|
||||
switch dst := dst.(type) {
|
||||
case *image.RGBA:
|
||||
z.scaleY_RGBA(dst, dp, tmp)
|
||||
default:
|
||||
z.scaleY_Image(dst, dp, tmp)
|
||||
}
|
||||
}
|
||||
|
||||
func (z *kernelScaler) scaleX_NRGBA(tmp [][4]float64, src *image.NRGBA, sp image.Point) {
|
||||
t := 0
|
||||
for y := int32(0); y < z.sh; y++ {
|
||||
for _, s := range z.horizontal.sources {
|
||||
var pr, pg, pb, pa float64
|
||||
for _, c := range z.horizontal.contribs[s.i:s.j] {
|
||||
pru, pgu, pbu, pau := src.At(sp.X+int(c.coord), sp.Y+int(y)).RGBA()
|
||||
pr += float64(pru) * c.weight
|
||||
pg += float64(pgu) * c.weight
|
||||
pb += float64(pbu) * c.weight
|
||||
pa += float64(pau) * c.weight
|
||||
}
|
||||
tmp[t] = [4]float64{
|
||||
pr * s.invTotalWeightFFFF,
|
||||
pg * s.invTotalWeightFFFF,
|
||||
pb * s.invTotalWeightFFFF,
|
||||
pa * s.invTotalWeightFFFF,
|
||||
}
|
||||
t++
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (z *kernelScaler) scaleX_RGBA(tmp [][4]float64, src *image.RGBA, sp image.Point) {
|
||||
t := 0
|
||||
for y := int32(0); y < z.sh; y++ {
|
||||
for _, s := range z.horizontal.sources {
|
||||
var pr, pg, pb, pa float64
|
||||
for _, c := range z.horizontal.contribs[s.i:s.j] {
|
||||
pru, pgu, pbu, pau := src.At(sp.X+int(c.coord), sp.Y+int(y)).RGBA()
|
||||
pr += float64(pru) * c.weight
|
||||
pg += float64(pgu) * c.weight
|
||||
pb += float64(pbu) * c.weight
|
||||
pa += float64(pau) * c.weight
|
||||
}
|
||||
tmp[t] = [4]float64{
|
||||
pr * s.invTotalWeightFFFF,
|
||||
pg * s.invTotalWeightFFFF,
|
||||
pb * s.invTotalWeightFFFF,
|
||||
pa * s.invTotalWeightFFFF,
|
||||
}
|
||||
t++
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (z *kernelScaler) scaleX_Uniform(tmp [][4]float64, src *image.Uniform, sp image.Point) {
|
||||
t := 0
|
||||
for y := int32(0); y < z.sh; y++ {
|
||||
for _, s := range z.horizontal.sources {
|
||||
var pr, pg, pb, pa float64
|
||||
for _, c := range z.horizontal.contribs[s.i:s.j] {
|
||||
pru, pgu, pbu, pau := src.At(sp.X+int(c.coord), sp.Y+int(y)).RGBA()
|
||||
pr += float64(pru) * c.weight
|
||||
pg += float64(pgu) * c.weight
|
||||
pb += float64(pbu) * c.weight
|
||||
pa += float64(pau) * c.weight
|
||||
}
|
||||
tmp[t] = [4]float64{
|
||||
pr * s.invTotalWeightFFFF,
|
||||
pg * s.invTotalWeightFFFF,
|
||||
pb * s.invTotalWeightFFFF,
|
||||
pa * s.invTotalWeightFFFF,
|
||||
}
|
||||
t++
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (z *kernelScaler) scaleX_YCbCr(tmp [][4]float64, src *image.YCbCr, sp image.Point) {
|
||||
t := 0
|
||||
for y := int32(0); y < z.sh; y++ {
|
||||
for _, s := range z.horizontal.sources {
|
||||
var pr, pg, pb, pa float64
|
||||
for _, c := range z.horizontal.contribs[s.i:s.j] {
|
||||
pru, pgu, pbu, pau := src.At(sp.X+int(c.coord), sp.Y+int(y)).RGBA()
|
||||
pr += float64(pru) * c.weight
|
||||
pg += float64(pgu) * c.weight
|
||||
pb += float64(pbu) * c.weight
|
||||
pa += float64(pau) * c.weight
|
||||
}
|
||||
tmp[t] = [4]float64{
|
||||
pr * s.invTotalWeightFFFF,
|
||||
pg * s.invTotalWeightFFFF,
|
||||
pb * s.invTotalWeightFFFF,
|
||||
pa * s.invTotalWeightFFFF,
|
||||
}
|
||||
t++
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (z *kernelScaler) scaleX_Image(tmp [][4]float64, src image.Image, sp image.Point) {
|
||||
t := 0
|
||||
|
|
@ -149,6 +737,28 @@ func (z *kernelScaler) scaleX_Image(tmp [][4]float64, src image.Image, sp image.
|
|||
}
|
||||
}
|
||||
|
||||
func (z *kernelScaler) scaleY_RGBA(dst *image.RGBA, dp image.Point, tmp [][4]float64) {
|
||||
dstColorRGBA64 := &color.RGBA64{}
|
||||
dstColor := color.Color(dstColorRGBA64)
|
||||
for x := int32(0); x < z.dw; x++ {
|
||||
for y, s := range z.vertical.sources {
|
||||
var pr, pg, pb, pa float64
|
||||
for _, c := range z.vertical.contribs[s.i:s.j] {
|
||||
p := &tmp[c.coord*z.dw+x]
|
||||
pr += p[0] * c.weight
|
||||
pg += p[1] * c.weight
|
||||
pb += p[2] * c.weight
|
||||
pa += p[3] * c.weight
|
||||
}
|
||||
dstColorRGBA64.R = ftou(pr * s.invTotalWeight)
|
||||
dstColorRGBA64.G = ftou(pg * s.invTotalWeight)
|
||||
dstColorRGBA64.B = ftou(pb * s.invTotalWeight)
|
||||
dstColorRGBA64.A = ftou(pa * s.invTotalWeight)
|
||||
dst.Set(dp.X+int(x), dp.Y+int(y), dstColor)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (z *kernelScaler) scaleY_Image(dst Image, dp image.Point, tmp [][4]float64) {
|
||||
dstColorRGBA64 := &color.RGBA64{}
|
||||
dstColor := color.Color(dstColorRGBA64)
|
||||
|
|
|
|||
|
|
@ -81,26 +81,52 @@ func testScale(t *testing.T, w int, h int, direction, srcFilename string) {
|
|||
func TestScaleDown(t *testing.T) { testScale(t, 100, 100, "down", "280x360.jpeg") }
|
||||
func TestScaleUp(t *testing.T) { testScale(t, 75, 100, "up", "14x18.png") }
|
||||
|
||||
func benchScale(b *testing.B, largeSrc bool, w int, h int, q Interpolator) {
|
||||
var src image.Image
|
||||
if largeSrc {
|
||||
// TODO: test that scaling concrete types like *image.RGBA and *image.YCbCr
|
||||
// give the same results as scaling those images wrapped in another Image or
|
||||
// image.Image type that would skip the fast-path type switch.
|
||||
|
||||
func srcNRGBA() (image.Image, error) {
|
||||
return image.NewNRGBA(image.Rect(0, 0, 1024, 768)), nil
|
||||
}
|
||||
|
||||
func srcRGBA() (image.Image, error) {
|
||||
return image.NewRGBA(image.Rect(0, 0, 1024, 768)), nil
|
||||
}
|
||||
|
||||
func srcUniform() (image.Image, error) {
|
||||
return image.White, nil
|
||||
}
|
||||
|
||||
func srcYCbCr() (image.Image, error) {
|
||||
return image.NewYCbCr(image.Rect(0, 0, 1024, 768), image.YCbCrSubsampleRatio420), nil
|
||||
}
|
||||
|
||||
func srcYCbCrLarge() (image.Image, error) {
|
||||
// 3072 x 2304 is over 7 million pixels at 4:3, comparable to a
|
||||
// 2015 smart-phone camera's output.
|
||||
src = image.NewYCbCr(image.Rect(0, 0, 3072, 2304), image.YCbCrSubsampleRatio420)
|
||||
} else {
|
||||
return image.NewYCbCr(image.Rect(0, 0, 3072, 2304), image.YCbCrSubsampleRatio420), nil
|
||||
}
|
||||
|
||||
func srcTux() (image.Image, error) {
|
||||
// tux.png is a 386 x 395 image.
|
||||
f, err := os.Open("../testdata/tux.png")
|
||||
if err != nil {
|
||||
b.Fatalf("Open: %v", err)
|
||||
return nil, fmt.Errorf("Open: %v", err)
|
||||
}
|
||||
defer f.Close()
|
||||
src, err = png.Decode(f)
|
||||
src, err := png.Decode(f)
|
||||
if err != nil {
|
||||
b.Fatalf("Decode: %v", err)
|
||||
return nil, fmt.Errorf("Decode: %v", err)
|
||||
}
|
||||
return src, nil
|
||||
}
|
||||
|
||||
func benchScale(b *testing.B, srcf func() (image.Image, error), w int, h int, q Interpolator) {
|
||||
dst := image.NewRGBA(image.Rect(0, 0, w, h))
|
||||
src, err := srcf()
|
||||
if err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
dr, sr := dst.Bounds(), src.Bounds()
|
||||
scaler := q.NewScaler(int32(dr.Dx()), int32(dr.Dy()), int32(sr.Dx()), int32(sr.Dy()))
|
||||
|
||||
|
|
@ -110,15 +136,22 @@ func benchScale(b *testing.B, largeSrc bool, w int, h int, q Interpolator) {
|
|||
}
|
||||
}
|
||||
|
||||
func BenchmarkScaleLargeDownNN(b *testing.B) { benchScale(b, true, 200, 150, NearestNeighbor) }
|
||||
func BenchmarkScaleLargeDownAB(b *testing.B) { benchScale(b, true, 200, 150, ApproxBiLinear) }
|
||||
func BenchmarkScaleLargeDownBL(b *testing.B) { benchScale(b, true, 200, 150, BiLinear) }
|
||||
func BenchmarkScaleLargeDownCR(b *testing.B) { benchScale(b, true, 200, 150, CatmullRom) }
|
||||
func BenchmarkScaleDownNN(b *testing.B) { benchScale(b, false, 120, 80, NearestNeighbor) }
|
||||
func BenchmarkScaleDownAB(b *testing.B) { benchScale(b, false, 120, 80, ApproxBiLinear) }
|
||||
func BenchmarkScaleDownBL(b *testing.B) { benchScale(b, false, 120, 80, BiLinear) }
|
||||
func BenchmarkScaleDownCR(b *testing.B) { benchScale(b, false, 120, 80, CatmullRom) }
|
||||
func BenchmarkScaleUpNN(b *testing.B) { benchScale(b, false, 800, 600, NearestNeighbor) }
|
||||
func BenchmarkScaleUpAB(b *testing.B) { benchScale(b, false, 800, 600, ApproxBiLinear) }
|
||||
func BenchmarkScaleUpBL(b *testing.B) { benchScale(b, false, 800, 600, BiLinear) }
|
||||
func BenchmarkScaleUpCR(b *testing.B) { benchScale(b, false, 800, 600, CatmullRom) }
|
||||
func BenchmarkScaleLargeDownNN(b *testing.B) { benchScale(b, srcYCbCrLarge, 200, 150, NearestNeighbor) }
|
||||
func BenchmarkScaleLargeDownAB(b *testing.B) { benchScale(b, srcYCbCrLarge, 200, 150, ApproxBiLinear) }
|
||||
func BenchmarkScaleLargeDownBL(b *testing.B) { benchScale(b, srcYCbCrLarge, 200, 150, BiLinear) }
|
||||
func BenchmarkScaleLargeDownCR(b *testing.B) { benchScale(b, srcYCbCrLarge, 200, 150, CatmullRom) }
|
||||
|
||||
func BenchmarkScaleDownNN(b *testing.B) { benchScale(b, srcTux, 120, 80, NearestNeighbor) }
|
||||
func BenchmarkScaleDownAB(b *testing.B) { benchScale(b, srcTux, 120, 80, ApproxBiLinear) }
|
||||
func BenchmarkScaleDownBL(b *testing.B) { benchScale(b, srcTux, 120, 80, BiLinear) }
|
||||
func BenchmarkScaleDownCR(b *testing.B) { benchScale(b, srcTux, 120, 80, CatmullRom) }
|
||||
|
||||
func BenchmarkScaleUpNN(b *testing.B) { benchScale(b, srcTux, 800, 600, NearestNeighbor) }
|
||||
func BenchmarkScaleUpAB(b *testing.B) { benchScale(b, srcTux, 800, 600, ApproxBiLinear) }
|
||||
func BenchmarkScaleUpBL(b *testing.B) { benchScale(b, srcTux, 800, 600, BiLinear) }
|
||||
func BenchmarkScaleUpCR(b *testing.B) { benchScale(b, srcTux, 800, 600, CatmullRom) }
|
||||
|
||||
func BenchmarkScaleSrcNRGBA(b *testing.B) { benchScale(b, srcNRGBA, 200, 150, ApproxBiLinear) }
|
||||
func BenchmarkScaleSrcRGBA(b *testing.B) { benchScale(b, srcRGBA, 200, 150, ApproxBiLinear) }
|
||||
func BenchmarkScaleSrcUniform(b *testing.B) { benchScale(b, srcUniform, 200, 150, ApproxBiLinear) }
|
||||
func BenchmarkScaleSrcYCbCr(b *testing.B) { benchScale(b, srcYCbCr, 200, 150, ApproxBiLinear) }
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user