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draw: add Scale and Transform fast paths for YCbCr src images.

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benchmark                      old ns/op      new ns/op     delta
BenchmarkScaleLargeDownNN      3239565        1044458       -67.76%
BenchmarkScaleLargeDownAB      12162059       3205972       -73.64%
BenchmarkScaleLargeDownBL      1437923310     358229213     -75.09%
BenchmarkScaleLargeDownCR      2844139449     651228380     -77.10%
BenchmarkScaleSrcYCbCr         12413692       3176042       -74.42%
BenchmarkTformABSrcYCbCr       8363947        2163052       -74.14%
BenchmarkTformCRSrcYCbCr       49944171       11652821      -76.67%

Change-Id: I8cd5ab20aa1f516114599690cab037441a328aec
Reviewed-on: https://go-review.googlesource.com/7796
Reviewed-by: Rob Pike <r@golang.org>
This commit is contained in:
Nigel Tao 2015-03-20 10:14:03 +11:00
parent c62001d39b
commit 415cb3b420
2 changed files with 420 additions and 160 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

116
draw/gen.go
View File

@ -249,6 +249,15 @@ func expnDollar(prefix, dollar, suffix string, d *data) string {
"%sr = %s*%sr + %s*%sr", "%sr = %s*%sr + %s*%sr",
args[3], args[0], args[1], args[2], args[3], args[3], args[0], args[1], args[2], args[3],
) )
case "*image.YCbCr":
return fmt.Sprintf(""+
"%sr = %s*%sr + %s*%sr\n"+
"%sg = %s*%sg + %s*%sg\n"+
"%sb = %s*%sb + %s*%sb",
args[3], args[0], args[1], args[2], args[3],
args[3], args[0], args[1], args[2], args[3],
args[3], args[0], args[1], args[2], args[3],
)
} }
case "outputu": case "outputu":
@ -282,6 +291,16 @@ func expnDollar(prefix, dollar, suffix string, d *data) string {
args[2], args[2],
args[0], args[1], args[0], args[1],
) )
case "*image.YCbCr":
return fmt.Sprintf(""+
"dstColorRGBA64.R = uint16(%sr)\n"+
"dstColorRGBA64.G = uint16(%sg)\n"+
"dstColorRGBA64.B = uint16(%sb)\n"+
"dstColorRGBA64.A = 0xffff\n"+
"dst.Set(%s, %s, dstColor)",
args[2], args[2], args[2],
args[0], args[1],
)
} }
case "*image.RGBA": case "*image.RGBA":
switch d.sType { switch d.sType {
@ -302,6 +321,14 @@ func expnDollar(prefix, dollar, suffix string, d *data) string {
"dst.Pix[d+3] = 0xff", "dst.Pix[d+3] = 0xff",
args[2], args[2],
) )
case "*image.YCbCr":
return fmt.Sprintf(""+
"dst.Pix[d+0] = uint8(uint32(%sr) >> 8)\n"+
"dst.Pix[d+1] = uint8(uint32(%sg) >> 8)\n"+
"dst.Pix[d+2] = uint8(uint32(%sb) >> 8)\n"+
"dst.Pix[d+3] = 0xff",
args[2], args[2], args[2],
)
} }
} }
@ -340,6 +367,18 @@ func expnDollar(prefix, dollar, suffix string, d *data) string {
args[2], args[3], args[4], args[2], args[3], args[4],
args[0], args[1], args[0], args[1],
) )
case "*image.YCbCr":
ret = fmt.Sprintf(""+
"dstColorRGBA64.R = %s(%sr * %s)\n"+
"dstColorRGBA64.G = %s(%sg * %s)\n"+
"dstColorRGBA64.B = %s(%sb * %s)\n"+
"dstColorRGBA64.A = 0xffff\n"+
"dst.Set(%s, %s, dstColor)",
args[2], args[3], args[4],
args[2], args[3], args[4],
args[2], args[3], args[4],
args[0], args[1],
)
} }
case "*image.RGBA": case "*image.RGBA":
switch d.sType { switch d.sType {
@ -363,6 +402,16 @@ func expnDollar(prefix, dollar, suffix string, d *data) string {
"dst.Pix[d+3] = 0xff", "dst.Pix[d+3] = 0xff",
args[2], args[3], args[4], args[2], args[3], args[4],
) )
case "*image.YCbCr":
ret = fmt.Sprintf(""+
"dst.Pix[d+0] = uint8(%s(%sr * %s) >> 8)\n"+
"dst.Pix[d+1] = uint8(%s(%sg * %s) >> 8)\n"+
"dst.Pix[d+2] = uint8(%s(%sb * %s) >> 8)\n"+
"dst.Pix[d+3] = 0xff",
args[2], args[3], args[4],
args[2], args[3], args[4],
args[2], args[3], args[4],
)
} }
} }
return strings.Replace(ret, " * 1)", ")", -1) return strings.Replace(ret, " * 1)", ")", -1)
@ -382,28 +431,28 @@ func expnDollar(prefix, dollar, suffix string, d *data) string {
tmp = "u" tmp = "u"
} }
// TODO: there's no need to multiply by 0x101 in the switch below if
// the next thing we're going to do is shift right by 8.
buf := new(bytes.Buffer) buf := new(bytes.Buffer)
switch d.sType { switch d.sType {
default: default:
log.Fatalf("bad sType %q", d.sType) log.Fatalf("bad sType %q", d.sType)
case "image.Image", "*image.Uniform", "*image.YCbCr": // TODO: separate code for concrete types. case "image.Image", "*image.Uniform": // TODO: separate code for concrete types.
fmt.Fprintf(buf, "%sr%s, %sg%s, %sb%s, %sa%s := "+ fmt.Fprintf(buf, ""+
"src.At(%s, %s).RGBA()\n", "%sr%s, %sg%s, %sb%s, %sa%s := src.At(%s, %s).RGBA()\n",
lhs, tmp, lhs, tmp, lhs, tmp, lhs, tmp, lhs, tmp, lhs, tmp, lhs, tmp, lhs, tmp, args[0], args[1],
args[0], args[1],
) )
case "*image.Gray": case "*image.Gray":
// TODO: there's no need to multiply by 0x101 if the next thing fmt.Fprintf(buf, ""+
// we're going to do is shift right by 8. "%si := src.PixOffset(%s, %s)\n"+
fmt.Fprintf(buf, "%si := src.PixOffset(%s, %s)\n"+
"%sr%s := uint32(src.Pix[%si]) * 0x101\n", "%sr%s := uint32(src.Pix[%si]) * 0x101\n",
lhs, args[0], args[1], lhs, args[0], args[1],
lhs, tmp, lhs, lhs, tmp, lhs,
) )
case "*image.NRGBA": case "*image.NRGBA":
// TODO: there's no need to multiply by 0x101 if the next thing fmt.Fprintf(buf, ""+
// we're going to do is shift right by 8. "%si := src.PixOffset(%s, %s)\n"+
fmt.Fprintf(buf, "%si := src.PixOffset(%s, %s)\n"+
"%sa%s := uint32(src.Pix[%si+3]) * 0x101\n"+ "%sa%s := uint32(src.Pix[%si+3]) * 0x101\n"+
"%sr%s := uint32(src.Pix[%si+0]) * %sa%s / 0xff\n"+ "%sr%s := uint32(src.Pix[%si+0]) * %sa%s / 0xff\n"+
"%sg%s := uint32(src.Pix[%si+1]) * %sa%s / 0xff\n"+ "%sg%s := uint32(src.Pix[%si+1]) * %sa%s / 0xff\n"+
@ -415,9 +464,8 @@ func expnDollar(prefix, dollar, suffix string, d *data) string {
lhs, tmp, lhs, lhs, tmp, lhs, tmp, lhs, lhs, tmp,
) )
case "*image.RGBA": case "*image.RGBA":
// TODO: there's no need to multiply by 0x101 if the next thing fmt.Fprintf(buf, ""+
// we're going to do is shift right by 8. "%si := src.PixOffset(%s, %s)\n"+
fmt.Fprintf(buf, "%si := src.PixOffset(%s, %s)\n"+
"%sr%s := uint32(src.Pix[%si+0]) * 0x101\n"+ "%sr%s := uint32(src.Pix[%si+0]) * 0x101\n"+
"%sg%s := uint32(src.Pix[%si+1]) * 0x101\n"+ "%sg%s := uint32(src.Pix[%si+1]) * 0x101\n"+
"%sb%s := uint32(src.Pix[%si+2]) * 0x101\n"+ "%sb%s := uint32(src.Pix[%si+2]) * 0x101\n"+
@ -428,6 +476,25 @@ func expnDollar(prefix, dollar, suffix string, d *data) string {
lhs, tmp, lhs, lhs, tmp, lhs,
lhs, tmp, lhs, lhs, tmp, lhs,
) )
case "*image.YCbCr":
// TODO: inline the COffset call, with the known d.sratio value.
// TODO: inline the color.YCbCrToRGB call.
// TODO: should we have a color.YCbCrToRGB48 function that returns
// 16-bit color?
fmt.Fprintf(buf, ""+
"%si := src.YOffset(%s, %s)\n"+
"%sj := src.COffset(%s, %s)\n"+
"%sr8, %sg8, %sb8 := color.YCbCrToRGB(src.Y[%si], src.Cb[%sj], src.Cr[%sj])\n"+
"%sr%s := uint32(%sr8) * 0x101\n"+
"%sg%s := uint32(%sg8) * 0x101\n"+
"%sb%s := uint32(%sb8) * 0x101\n",
lhs, args[0], args[1],
lhs, args[0], args[1],
lhs, lhs, lhs, lhs, lhs, lhs,
lhs, tmp, lhs,
lhs, tmp, lhs,
lhs, tmp, lhs,
)
} }
if dollar == "srcf" { if dollar == "srcf" {
@ -448,6 +515,15 @@ func expnDollar(prefix, dollar, suffix string, d *data) string {
"%sr %s float64(%sru)%s\n", "%sr %s float64(%sru)%s\n",
lhs, eqOp, lhs, extra, lhs, eqOp, lhs, extra,
) )
case "*image.YCbCr":
fmt.Fprintf(buf, ""+
"%sr %s float64(%sru)%s\n"+
"%sg %s float64(%sgu)%s\n"+
"%sb %s float64(%sbu)%s\n",
lhs, eqOp, lhs, extra,
lhs, eqOp, lhs, extra,
lhs, eqOp, lhs, extra,
)
} }
} }
@ -472,11 +548,16 @@ func expnDollar(prefix, dollar, suffix string, d *data) string {
return prefix return prefix
case "tweakP": case "tweakP":
if d.sType == "*image.Gray" { switch d.sType {
case "*image.Gray":
if strings.HasPrefix(strings.TrimSpace(prefix), "pa * ") { if strings.HasPrefix(strings.TrimSpace(prefix), "pa * ") {
return "1," return "1,"
} }
return "pr," return "pr,"
case "*image.YCbCr":
if strings.HasPrefix(strings.TrimSpace(prefix), "pa * ") {
return "1,"
}
} }
return prefix return prefix
@ -487,8 +568,11 @@ func expnDollar(prefix, dollar, suffix string, d *data) string {
return ";" return ";"
case "tweakVarP": case "tweakVarP":
if d.sType == "*image.Gray" { switch d.sType {
case "*image.Gray":
return strings.Replace(prefix, "var pr, pg, pb, pa", "var pr", 1) return strings.Replace(prefix, "var pr, pg, pb, pa", "var pr", 1)
case "*image.YCbCr":
return strings.Replace(prefix, "var pr, pg, pb, pa", "var pr, pg, pb", 1)
} }
return prefix return prefix
} }

464
draw/impl.go
View File

@ -204,11 +204,16 @@ func (nnInterpolator) scale_RGBA_YCbCr444(dst *image.RGBA, dr, adr image.Rectang
d := dst.PixOffset(dr.Min.X+adr.Min.X, dr.Min.Y+int(dy)) d := dst.PixOffset(dr.Min.X+adr.Min.X, dr.Min.Y+int(dy))
for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
sx := (2*uint64(dx) + 1) * sw / dw2 sx := (2*uint64(dx) + 1) * sw / dw2
pr, pg, pb, pa := src.At(sr.Min.X+int(sx), sr.Min.Y+int(sy)).RGBA() pi := src.YOffset(sr.Min.X+int(sx), sr.Min.Y+int(sy))
pj := src.COffset(sr.Min.X+int(sx), sr.Min.Y+int(sy))
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pr := uint32(pr8) * 0x101
pg := uint32(pg8) * 0x101
pb := uint32(pb8) * 0x101
dst.Pix[d+0] = uint8(uint32(pr) >> 8) dst.Pix[d+0] = uint8(uint32(pr) >> 8)
dst.Pix[d+1] = uint8(uint32(pg) >> 8) dst.Pix[d+1] = uint8(uint32(pg) >> 8)
dst.Pix[d+2] = uint8(uint32(pb) >> 8) dst.Pix[d+2] = uint8(uint32(pb) >> 8)
dst.Pix[d+3] = uint8(uint32(pa) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -223,11 +228,16 @@ func (nnInterpolator) scale_RGBA_YCbCr422(dst *image.RGBA, dr, adr image.Rectang
d := dst.PixOffset(dr.Min.X+adr.Min.X, dr.Min.Y+int(dy)) d := dst.PixOffset(dr.Min.X+adr.Min.X, dr.Min.Y+int(dy))
for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
sx := (2*uint64(dx) + 1) * sw / dw2 sx := (2*uint64(dx) + 1) * sw / dw2
pr, pg, pb, pa := src.At(sr.Min.X+int(sx), sr.Min.Y+int(sy)).RGBA() pi := src.YOffset(sr.Min.X+int(sx), sr.Min.Y+int(sy))
pj := src.COffset(sr.Min.X+int(sx), sr.Min.Y+int(sy))
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pr := uint32(pr8) * 0x101
pg := uint32(pg8) * 0x101
pb := uint32(pb8) * 0x101
dst.Pix[d+0] = uint8(uint32(pr) >> 8) dst.Pix[d+0] = uint8(uint32(pr) >> 8)
dst.Pix[d+1] = uint8(uint32(pg) >> 8) dst.Pix[d+1] = uint8(uint32(pg) >> 8)
dst.Pix[d+2] = uint8(uint32(pb) >> 8) dst.Pix[d+2] = uint8(uint32(pb) >> 8)
dst.Pix[d+3] = uint8(uint32(pa) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -242,11 +252,16 @@ func (nnInterpolator) scale_RGBA_YCbCr420(dst *image.RGBA, dr, adr image.Rectang
d := dst.PixOffset(dr.Min.X+adr.Min.X, dr.Min.Y+int(dy)) d := dst.PixOffset(dr.Min.X+adr.Min.X, dr.Min.Y+int(dy))
for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
sx := (2*uint64(dx) + 1) * sw / dw2 sx := (2*uint64(dx) + 1) * sw / dw2
pr, pg, pb, pa := src.At(sr.Min.X+int(sx), sr.Min.Y+int(sy)).RGBA() pi := src.YOffset(sr.Min.X+int(sx), sr.Min.Y+int(sy))
pj := src.COffset(sr.Min.X+int(sx), sr.Min.Y+int(sy))
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pr := uint32(pr8) * 0x101
pg := uint32(pg8) * 0x101
pb := uint32(pb8) * 0x101
dst.Pix[d+0] = uint8(uint32(pr) >> 8) dst.Pix[d+0] = uint8(uint32(pr) >> 8)
dst.Pix[d+1] = uint8(uint32(pg) >> 8) dst.Pix[d+1] = uint8(uint32(pg) >> 8)
dst.Pix[d+2] = uint8(uint32(pb) >> 8) dst.Pix[d+2] = uint8(uint32(pb) >> 8)
dst.Pix[d+3] = uint8(uint32(pa) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -261,11 +276,16 @@ func (nnInterpolator) scale_RGBA_YCbCr440(dst *image.RGBA, dr, adr image.Rectang
d := dst.PixOffset(dr.Min.X+adr.Min.X, dr.Min.Y+int(dy)) d := dst.PixOffset(dr.Min.X+adr.Min.X, dr.Min.Y+int(dy))
for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
sx := (2*uint64(dx) + 1) * sw / dw2 sx := (2*uint64(dx) + 1) * sw / dw2
pr, pg, pb, pa := src.At(sr.Min.X+int(sx), sr.Min.Y+int(sy)).RGBA() pi := src.YOffset(sr.Min.X+int(sx), sr.Min.Y+int(sy))
pj := src.COffset(sr.Min.X+int(sx), sr.Min.Y+int(sy))
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pr := uint32(pr8) * 0x101
pg := uint32(pg8) * 0x101
pb := uint32(pb8) * 0x101
dst.Pix[d+0] = uint8(uint32(pr) >> 8) dst.Pix[d+0] = uint8(uint32(pr) >> 8)
dst.Pix[d+1] = uint8(uint32(pg) >> 8) dst.Pix[d+1] = uint8(uint32(pg) >> 8)
dst.Pix[d+2] = uint8(uint32(pb) >> 8) dst.Pix[d+2] = uint8(uint32(pb) >> 8)
dst.Pix[d+3] = uint8(uint32(pa) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -416,11 +436,16 @@ func (nnInterpolator) transform_RGBA_YCbCr444(dst *image.RGBA, dr, adr image.Rec
if !(image.Point{sx0, sy0}).In(sr) { if !(image.Point{sx0, sy0}).In(sr) {
continue continue
} }
pr, pg, pb, pa := src.At(sx0, sy0).RGBA() pi := src.YOffset(sx0, sy0)
pj := src.COffset(sx0, sy0)
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pr := uint32(pr8) * 0x101
pg := uint32(pg8) * 0x101
pb := uint32(pb8) * 0x101
dst.Pix[d+0] = uint8(uint32(pr) >> 8) dst.Pix[d+0] = uint8(uint32(pr) >> 8)
dst.Pix[d+1] = uint8(uint32(pg) >> 8) dst.Pix[d+1] = uint8(uint32(pg) >> 8)
dst.Pix[d+2] = uint8(uint32(pb) >> 8) dst.Pix[d+2] = uint8(uint32(pb) >> 8)
dst.Pix[d+3] = uint8(uint32(pa) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -437,11 +462,16 @@ func (nnInterpolator) transform_RGBA_YCbCr422(dst *image.RGBA, dr, adr image.Rec
if !(image.Point{sx0, sy0}).In(sr) { if !(image.Point{sx0, sy0}).In(sr) {
continue continue
} }
pr, pg, pb, pa := src.At(sx0, sy0).RGBA() pi := src.YOffset(sx0, sy0)
pj := src.COffset(sx0, sy0)
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pr := uint32(pr8) * 0x101
pg := uint32(pg8) * 0x101
pb := uint32(pb8) * 0x101
dst.Pix[d+0] = uint8(uint32(pr) >> 8) dst.Pix[d+0] = uint8(uint32(pr) >> 8)
dst.Pix[d+1] = uint8(uint32(pg) >> 8) dst.Pix[d+1] = uint8(uint32(pg) >> 8)
dst.Pix[d+2] = uint8(uint32(pb) >> 8) dst.Pix[d+2] = uint8(uint32(pb) >> 8)
dst.Pix[d+3] = uint8(uint32(pa) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -458,11 +488,16 @@ func (nnInterpolator) transform_RGBA_YCbCr420(dst *image.RGBA, dr, adr image.Rec
if !(image.Point{sx0, sy0}).In(sr) { if !(image.Point{sx0, sy0}).In(sr) {
continue continue
} }
pr, pg, pb, pa := src.At(sx0, sy0).RGBA() pi := src.YOffset(sx0, sy0)
pj := src.COffset(sx0, sy0)
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pr := uint32(pr8) * 0x101
pg := uint32(pg8) * 0x101
pb := uint32(pb8) * 0x101
dst.Pix[d+0] = uint8(uint32(pr) >> 8) dst.Pix[d+0] = uint8(uint32(pr) >> 8)
dst.Pix[d+1] = uint8(uint32(pg) >> 8) dst.Pix[d+1] = uint8(uint32(pg) >> 8)
dst.Pix[d+2] = uint8(uint32(pb) >> 8) dst.Pix[d+2] = uint8(uint32(pb) >> 8)
dst.Pix[d+3] = uint8(uint32(pa) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -479,11 +514,16 @@ func (nnInterpolator) transform_RGBA_YCbCr440(dst *image.RGBA, dr, adr image.Rec
if !(image.Point{sx0, sy0}).In(sr) { if !(image.Point{sx0, sy0}).In(sr) {
continue continue
} }
pr, pg, pb, pa := src.At(sx0, sy0).RGBA() pi := src.YOffset(sx0, sy0)
pj := src.COffset(sx0, sy0)
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pr := uint32(pr8) * 0x101
pg := uint32(pg8) * 0x101
pb := uint32(pb8) * 0x101
dst.Pix[d+0] = uint8(uint32(pr) >> 8) dst.Pix[d+0] = uint8(uint32(pr) >> 8)
dst.Pix[d+1] = uint8(uint32(pg) >> 8) dst.Pix[d+1] = uint8(uint32(pg) >> 8)
dst.Pix[d+2] = uint8(uint32(pb) >> 8) dst.Pix[d+2] = uint8(uint32(pb) >> 8)
dst.Pix[d+3] = uint8(uint32(pa) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -1001,42 +1041,55 @@ func (ablInterpolator) scale_RGBA_YCbCr444(dst *image.RGBA, dr, adr image.Rectan
xFrac0, xFrac1 = 1, 0 xFrac0, xFrac1 = 1, 0
} }
s00ru, s00gu, s00bu, s00au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy0)).RGBA() s00i := src.YOffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy0))
s00j := src.COffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy0))
s00r8, s00g8, s00b8 := color.YCbCrToRGB(src.Y[s00i], src.Cb[s00j], src.Cr[s00j])
s00ru := uint32(s00r8) * 0x101
s00gu := uint32(s00g8) * 0x101
s00bu := uint32(s00b8) * 0x101
s00r := float64(s00ru) s00r := float64(s00ru)
s00g := float64(s00gu) s00g := float64(s00gu)
s00b := float64(s00bu) s00b := float64(s00bu)
s00a := float64(s00au) s10i := src.YOffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy0))
s10ru, s10gu, s10bu, s10au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy0)).RGBA() s10j := src.COffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy0))
s10r8, s10g8, s10b8 := color.YCbCrToRGB(src.Y[s10i], src.Cb[s10j], src.Cr[s10j])
s10ru := uint32(s10r8) * 0x101
s10gu := uint32(s10g8) * 0x101
s10bu := uint32(s10b8) * 0x101
s10r := float64(s10ru) s10r := float64(s10ru)
s10g := float64(s10gu) s10g := float64(s10gu)
s10b := float64(s10bu) s10b := float64(s10bu)
s10a := float64(s10au)
s10r = xFrac1*s00r + xFrac0*s10r s10r = xFrac1*s00r + xFrac0*s10r
s10g = xFrac1*s00g + xFrac0*s10g s10g = xFrac1*s00g + xFrac0*s10g
s10b = xFrac1*s00b + xFrac0*s10b s10b = xFrac1*s00b + xFrac0*s10b
s10a = xFrac1*s00a + xFrac0*s10a s01i := src.YOffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy1))
s01ru, s01gu, s01bu, s01au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy1)).RGBA() s01j := src.COffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy1))
s01r8, s01g8, s01b8 := color.YCbCrToRGB(src.Y[s01i], src.Cb[s01j], src.Cr[s01j])
s01ru := uint32(s01r8) * 0x101
s01gu := uint32(s01g8) * 0x101
s01bu := uint32(s01b8) * 0x101
s01r := float64(s01ru) s01r := float64(s01ru)
s01g := float64(s01gu) s01g := float64(s01gu)
s01b := float64(s01bu) s01b := float64(s01bu)
s01a := float64(s01au) s11i := src.YOffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy1))
s11ru, s11gu, s11bu, s11au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy1)).RGBA() s11j := src.COffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy1))
s11r8, s11g8, s11b8 := color.YCbCrToRGB(src.Y[s11i], src.Cb[s11j], src.Cr[s11j])
s11ru := uint32(s11r8) * 0x101
s11gu := uint32(s11g8) * 0x101
s11bu := uint32(s11b8) * 0x101
s11r := float64(s11ru) s11r := float64(s11ru)
s11g := float64(s11gu) s11g := float64(s11gu)
s11b := float64(s11bu) s11b := float64(s11bu)
s11a := float64(s11au)
s11r = xFrac1*s01r + xFrac0*s11r s11r = xFrac1*s01r + xFrac0*s11r
s11g = xFrac1*s01g + xFrac0*s11g s11g = xFrac1*s01g + xFrac0*s11g
s11b = xFrac1*s01b + xFrac0*s11b s11b = xFrac1*s01b + xFrac0*s11b
s11a = xFrac1*s01a + xFrac0*s11a
s11r = yFrac1*s10r + yFrac0*s11r s11r = yFrac1*s10r + yFrac0*s11r
s11g = yFrac1*s10g + yFrac0*s11g s11g = yFrac1*s10g + yFrac0*s11g
s11b = yFrac1*s10b + yFrac0*s11b s11b = yFrac1*s10b + yFrac0*s11b
s11a = yFrac1*s10a + yFrac0*s11a
dst.Pix[d+0] = uint8(uint32(s11r) >> 8) dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
dst.Pix[d+1] = uint8(uint32(s11g) >> 8) dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
dst.Pix[d+2] = uint8(uint32(s11b) >> 8) dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
dst.Pix[d+3] = uint8(uint32(s11a) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -1080,42 +1133,55 @@ func (ablInterpolator) scale_RGBA_YCbCr422(dst *image.RGBA, dr, adr image.Rectan
xFrac0, xFrac1 = 1, 0 xFrac0, xFrac1 = 1, 0
} }
s00ru, s00gu, s00bu, s00au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy0)).RGBA() s00i := src.YOffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy0))
s00j := src.COffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy0))
s00r8, s00g8, s00b8 := color.YCbCrToRGB(src.Y[s00i], src.Cb[s00j], src.Cr[s00j])
s00ru := uint32(s00r8) * 0x101
s00gu := uint32(s00g8) * 0x101
s00bu := uint32(s00b8) * 0x101
s00r := float64(s00ru) s00r := float64(s00ru)
s00g := float64(s00gu) s00g := float64(s00gu)
s00b := float64(s00bu) s00b := float64(s00bu)
s00a := float64(s00au) s10i := src.YOffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy0))
s10ru, s10gu, s10bu, s10au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy0)).RGBA() s10j := src.COffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy0))
s10r8, s10g8, s10b8 := color.YCbCrToRGB(src.Y[s10i], src.Cb[s10j], src.Cr[s10j])
s10ru := uint32(s10r8) * 0x101
s10gu := uint32(s10g8) * 0x101
s10bu := uint32(s10b8) * 0x101
s10r := float64(s10ru) s10r := float64(s10ru)
s10g := float64(s10gu) s10g := float64(s10gu)
s10b := float64(s10bu) s10b := float64(s10bu)
s10a := float64(s10au)
s10r = xFrac1*s00r + xFrac0*s10r s10r = xFrac1*s00r + xFrac0*s10r
s10g = xFrac1*s00g + xFrac0*s10g s10g = xFrac1*s00g + xFrac0*s10g
s10b = xFrac1*s00b + xFrac0*s10b s10b = xFrac1*s00b + xFrac0*s10b
s10a = xFrac1*s00a + xFrac0*s10a s01i := src.YOffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy1))
s01ru, s01gu, s01bu, s01au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy1)).RGBA() s01j := src.COffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy1))
s01r8, s01g8, s01b8 := color.YCbCrToRGB(src.Y[s01i], src.Cb[s01j], src.Cr[s01j])
s01ru := uint32(s01r8) * 0x101
s01gu := uint32(s01g8) * 0x101
s01bu := uint32(s01b8) * 0x101
s01r := float64(s01ru) s01r := float64(s01ru)
s01g := float64(s01gu) s01g := float64(s01gu)
s01b := float64(s01bu) s01b := float64(s01bu)
s01a := float64(s01au) s11i := src.YOffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy1))
s11ru, s11gu, s11bu, s11au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy1)).RGBA() s11j := src.COffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy1))
s11r8, s11g8, s11b8 := color.YCbCrToRGB(src.Y[s11i], src.Cb[s11j], src.Cr[s11j])
s11ru := uint32(s11r8) * 0x101
s11gu := uint32(s11g8) * 0x101
s11bu := uint32(s11b8) * 0x101
s11r := float64(s11ru) s11r := float64(s11ru)
s11g := float64(s11gu) s11g := float64(s11gu)
s11b := float64(s11bu) s11b := float64(s11bu)
s11a := float64(s11au)
s11r = xFrac1*s01r + xFrac0*s11r s11r = xFrac1*s01r + xFrac0*s11r
s11g = xFrac1*s01g + xFrac0*s11g s11g = xFrac1*s01g + xFrac0*s11g
s11b = xFrac1*s01b + xFrac0*s11b s11b = xFrac1*s01b + xFrac0*s11b
s11a = xFrac1*s01a + xFrac0*s11a
s11r = yFrac1*s10r + yFrac0*s11r s11r = yFrac1*s10r + yFrac0*s11r
s11g = yFrac1*s10g + yFrac0*s11g s11g = yFrac1*s10g + yFrac0*s11g
s11b = yFrac1*s10b + yFrac0*s11b s11b = yFrac1*s10b + yFrac0*s11b
s11a = yFrac1*s10a + yFrac0*s11a
dst.Pix[d+0] = uint8(uint32(s11r) >> 8) dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
dst.Pix[d+1] = uint8(uint32(s11g) >> 8) dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
dst.Pix[d+2] = uint8(uint32(s11b) >> 8) dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
dst.Pix[d+3] = uint8(uint32(s11a) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -1159,42 +1225,55 @@ func (ablInterpolator) scale_RGBA_YCbCr420(dst *image.RGBA, dr, adr image.Rectan
xFrac0, xFrac1 = 1, 0 xFrac0, xFrac1 = 1, 0
} }
s00ru, s00gu, s00bu, s00au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy0)).RGBA() s00i := src.YOffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy0))
s00j := src.COffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy0))
s00r8, s00g8, s00b8 := color.YCbCrToRGB(src.Y[s00i], src.Cb[s00j], src.Cr[s00j])
s00ru := uint32(s00r8) * 0x101
s00gu := uint32(s00g8) * 0x101
s00bu := uint32(s00b8) * 0x101
s00r := float64(s00ru) s00r := float64(s00ru)
s00g := float64(s00gu) s00g := float64(s00gu)
s00b := float64(s00bu) s00b := float64(s00bu)
s00a := float64(s00au) s10i := src.YOffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy0))
s10ru, s10gu, s10bu, s10au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy0)).RGBA() s10j := src.COffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy0))
s10r8, s10g8, s10b8 := color.YCbCrToRGB(src.Y[s10i], src.Cb[s10j], src.Cr[s10j])
s10ru := uint32(s10r8) * 0x101
s10gu := uint32(s10g8) * 0x101
s10bu := uint32(s10b8) * 0x101
s10r := float64(s10ru) s10r := float64(s10ru)
s10g := float64(s10gu) s10g := float64(s10gu)
s10b := float64(s10bu) s10b := float64(s10bu)
s10a := float64(s10au)
s10r = xFrac1*s00r + xFrac0*s10r s10r = xFrac1*s00r + xFrac0*s10r
s10g = xFrac1*s00g + xFrac0*s10g s10g = xFrac1*s00g + xFrac0*s10g
s10b = xFrac1*s00b + xFrac0*s10b s10b = xFrac1*s00b + xFrac0*s10b
s10a = xFrac1*s00a + xFrac0*s10a s01i := src.YOffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy1))
s01ru, s01gu, s01bu, s01au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy1)).RGBA() s01j := src.COffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy1))
s01r8, s01g8, s01b8 := color.YCbCrToRGB(src.Y[s01i], src.Cb[s01j], src.Cr[s01j])
s01ru := uint32(s01r8) * 0x101
s01gu := uint32(s01g8) * 0x101
s01bu := uint32(s01b8) * 0x101
s01r := float64(s01ru) s01r := float64(s01ru)
s01g := float64(s01gu) s01g := float64(s01gu)
s01b := float64(s01bu) s01b := float64(s01bu)
s01a := float64(s01au) s11i := src.YOffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy1))
s11ru, s11gu, s11bu, s11au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy1)).RGBA() s11j := src.COffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy1))
s11r8, s11g8, s11b8 := color.YCbCrToRGB(src.Y[s11i], src.Cb[s11j], src.Cr[s11j])
s11ru := uint32(s11r8) * 0x101
s11gu := uint32(s11g8) * 0x101
s11bu := uint32(s11b8) * 0x101
s11r := float64(s11ru) s11r := float64(s11ru)
s11g := float64(s11gu) s11g := float64(s11gu)
s11b := float64(s11bu) s11b := float64(s11bu)
s11a := float64(s11au)
s11r = xFrac1*s01r + xFrac0*s11r s11r = xFrac1*s01r + xFrac0*s11r
s11g = xFrac1*s01g + xFrac0*s11g s11g = xFrac1*s01g + xFrac0*s11g
s11b = xFrac1*s01b + xFrac0*s11b s11b = xFrac1*s01b + xFrac0*s11b
s11a = xFrac1*s01a + xFrac0*s11a
s11r = yFrac1*s10r + yFrac0*s11r s11r = yFrac1*s10r + yFrac0*s11r
s11g = yFrac1*s10g + yFrac0*s11g s11g = yFrac1*s10g + yFrac0*s11g
s11b = yFrac1*s10b + yFrac0*s11b s11b = yFrac1*s10b + yFrac0*s11b
s11a = yFrac1*s10a + yFrac0*s11a
dst.Pix[d+0] = uint8(uint32(s11r) >> 8) dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
dst.Pix[d+1] = uint8(uint32(s11g) >> 8) dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
dst.Pix[d+2] = uint8(uint32(s11b) >> 8) dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
dst.Pix[d+3] = uint8(uint32(s11a) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -1238,42 +1317,55 @@ func (ablInterpolator) scale_RGBA_YCbCr440(dst *image.RGBA, dr, adr image.Rectan
xFrac0, xFrac1 = 1, 0 xFrac0, xFrac1 = 1, 0
} }
s00ru, s00gu, s00bu, s00au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy0)).RGBA() s00i := src.YOffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy0))
s00j := src.COffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy0))
s00r8, s00g8, s00b8 := color.YCbCrToRGB(src.Y[s00i], src.Cb[s00j], src.Cr[s00j])
s00ru := uint32(s00r8) * 0x101
s00gu := uint32(s00g8) * 0x101
s00bu := uint32(s00b8) * 0x101
s00r := float64(s00ru) s00r := float64(s00ru)
s00g := float64(s00gu) s00g := float64(s00gu)
s00b := float64(s00bu) s00b := float64(s00bu)
s00a := float64(s00au) s10i := src.YOffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy0))
s10ru, s10gu, s10bu, s10au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy0)).RGBA() s10j := src.COffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy0))
s10r8, s10g8, s10b8 := color.YCbCrToRGB(src.Y[s10i], src.Cb[s10j], src.Cr[s10j])
s10ru := uint32(s10r8) * 0x101
s10gu := uint32(s10g8) * 0x101
s10bu := uint32(s10b8) * 0x101
s10r := float64(s10ru) s10r := float64(s10ru)
s10g := float64(s10gu) s10g := float64(s10gu)
s10b := float64(s10bu) s10b := float64(s10bu)
s10a := float64(s10au)
s10r = xFrac1*s00r + xFrac0*s10r s10r = xFrac1*s00r + xFrac0*s10r
s10g = xFrac1*s00g + xFrac0*s10g s10g = xFrac1*s00g + xFrac0*s10g
s10b = xFrac1*s00b + xFrac0*s10b s10b = xFrac1*s00b + xFrac0*s10b
s10a = xFrac1*s00a + xFrac0*s10a s01i := src.YOffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy1))
s01ru, s01gu, s01bu, s01au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy1)).RGBA() s01j := src.COffset(sr.Min.X+int(sx0), sr.Min.Y+int(sy1))
s01r8, s01g8, s01b8 := color.YCbCrToRGB(src.Y[s01i], src.Cb[s01j], src.Cr[s01j])
s01ru := uint32(s01r8) * 0x101
s01gu := uint32(s01g8) * 0x101
s01bu := uint32(s01b8) * 0x101
s01r := float64(s01ru) s01r := float64(s01ru)
s01g := float64(s01gu) s01g := float64(s01gu)
s01b := float64(s01bu) s01b := float64(s01bu)
s01a := float64(s01au) s11i := src.YOffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy1))
s11ru, s11gu, s11bu, s11au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy1)).RGBA() s11j := src.COffset(sr.Min.X+int(sx1), sr.Min.Y+int(sy1))
s11r8, s11g8, s11b8 := color.YCbCrToRGB(src.Y[s11i], src.Cb[s11j], src.Cr[s11j])
s11ru := uint32(s11r8) * 0x101
s11gu := uint32(s11g8) * 0x101
s11bu := uint32(s11b8) * 0x101
s11r := float64(s11ru) s11r := float64(s11ru)
s11g := float64(s11gu) s11g := float64(s11gu)
s11b := float64(s11bu) s11b := float64(s11bu)
s11a := float64(s11au)
s11r = xFrac1*s01r + xFrac0*s11r s11r = xFrac1*s01r + xFrac0*s11r
s11g = xFrac1*s01g + xFrac0*s11g s11g = xFrac1*s01g + xFrac0*s11g
s11b = xFrac1*s01b + xFrac0*s11b s11b = xFrac1*s01b + xFrac0*s11b
s11a = xFrac1*s01a + xFrac0*s11a
s11r = yFrac1*s10r + yFrac0*s11r s11r = yFrac1*s10r + yFrac0*s11r
s11g = yFrac1*s10g + yFrac0*s11g s11g = yFrac1*s10g + yFrac0*s11g
s11b = yFrac1*s10b + yFrac0*s11b s11b = yFrac1*s10b + yFrac0*s11b
s11a = yFrac1*s10a + yFrac0*s11a
dst.Pix[d+0] = uint8(uint32(s11r) >> 8) dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
dst.Pix[d+1] = uint8(uint32(s11g) >> 8) dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
dst.Pix[d+2] = uint8(uint32(s11b) >> 8) dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
dst.Pix[d+3] = uint8(uint32(s11a) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -1819,42 +1911,55 @@ func (ablInterpolator) transform_RGBA_YCbCr444(dst *image.RGBA, dr, adr image.Re
yFrac0, yFrac1 = 1, 0 yFrac0, yFrac1 = 1, 0
} }
s00ru, s00gu, s00bu, s00au := src.At(sx0, sy0).RGBA() s00i := src.YOffset(sx0, sy0)
s00j := src.COffset(sx0, sy0)
s00r8, s00g8, s00b8 := color.YCbCrToRGB(src.Y[s00i], src.Cb[s00j], src.Cr[s00j])
s00ru := uint32(s00r8) * 0x101
s00gu := uint32(s00g8) * 0x101
s00bu := uint32(s00b8) * 0x101
s00r := float64(s00ru) s00r := float64(s00ru)
s00g := float64(s00gu) s00g := float64(s00gu)
s00b := float64(s00bu) s00b := float64(s00bu)
s00a := float64(s00au) s10i := src.YOffset(sx1, sy0)
s10ru, s10gu, s10bu, s10au := src.At(sx1, sy0).RGBA() s10j := src.COffset(sx1, sy0)
s10r8, s10g8, s10b8 := color.YCbCrToRGB(src.Y[s10i], src.Cb[s10j], src.Cr[s10j])
s10ru := uint32(s10r8) * 0x101
s10gu := uint32(s10g8) * 0x101
s10bu := uint32(s10b8) * 0x101
s10r := float64(s10ru) s10r := float64(s10ru)
s10g := float64(s10gu) s10g := float64(s10gu)
s10b := float64(s10bu) s10b := float64(s10bu)
s10a := float64(s10au)
s10r = xFrac1*s00r + xFrac0*s10r s10r = xFrac1*s00r + xFrac0*s10r
s10g = xFrac1*s00g + xFrac0*s10g s10g = xFrac1*s00g + xFrac0*s10g
s10b = xFrac1*s00b + xFrac0*s10b s10b = xFrac1*s00b + xFrac0*s10b
s10a = xFrac1*s00a + xFrac0*s10a s01i := src.YOffset(sx0, sy1)
s01ru, s01gu, s01bu, s01au := src.At(sx0, sy1).RGBA() s01j := src.COffset(sx0, sy1)
s01r8, s01g8, s01b8 := color.YCbCrToRGB(src.Y[s01i], src.Cb[s01j], src.Cr[s01j])
s01ru := uint32(s01r8) * 0x101
s01gu := uint32(s01g8) * 0x101
s01bu := uint32(s01b8) * 0x101
s01r := float64(s01ru) s01r := float64(s01ru)
s01g := float64(s01gu) s01g := float64(s01gu)
s01b := float64(s01bu) s01b := float64(s01bu)
s01a := float64(s01au) s11i := src.YOffset(sx1, sy1)
s11ru, s11gu, s11bu, s11au := src.At(sx1, sy1).RGBA() s11j := src.COffset(sx1, sy1)
s11r8, s11g8, s11b8 := color.YCbCrToRGB(src.Y[s11i], src.Cb[s11j], src.Cr[s11j])
s11ru := uint32(s11r8) * 0x101
s11gu := uint32(s11g8) * 0x101
s11bu := uint32(s11b8) * 0x101
s11r := float64(s11ru) s11r := float64(s11ru)
s11g := float64(s11gu) s11g := float64(s11gu)
s11b := float64(s11bu) s11b := float64(s11bu)
s11a := float64(s11au)
s11r = xFrac1*s01r + xFrac0*s11r s11r = xFrac1*s01r + xFrac0*s11r
s11g = xFrac1*s01g + xFrac0*s11g s11g = xFrac1*s01g + xFrac0*s11g
s11b = xFrac1*s01b + xFrac0*s11b s11b = xFrac1*s01b + xFrac0*s11b
s11a = xFrac1*s01a + xFrac0*s11a
s11r = yFrac1*s10r + yFrac0*s11r s11r = yFrac1*s10r + yFrac0*s11r
s11g = yFrac1*s10g + yFrac0*s11g s11g = yFrac1*s10g + yFrac0*s11g
s11b = yFrac1*s10b + yFrac0*s11b s11b = yFrac1*s10b + yFrac0*s11b
s11a = yFrac1*s10a + yFrac0*s11a
dst.Pix[d+0] = uint8(uint32(s11r) >> 8) dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
dst.Pix[d+1] = uint8(uint32(s11g) >> 8) dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
dst.Pix[d+2] = uint8(uint32(s11b) >> 8) dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
dst.Pix[d+3] = uint8(uint32(s11a) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -1900,42 +2005,55 @@ func (ablInterpolator) transform_RGBA_YCbCr422(dst *image.RGBA, dr, adr image.Re
yFrac0, yFrac1 = 1, 0 yFrac0, yFrac1 = 1, 0
} }
s00ru, s00gu, s00bu, s00au := src.At(sx0, sy0).RGBA() s00i := src.YOffset(sx0, sy0)
s00j := src.COffset(sx0, sy0)
s00r8, s00g8, s00b8 := color.YCbCrToRGB(src.Y[s00i], src.Cb[s00j], src.Cr[s00j])
s00ru := uint32(s00r8) * 0x101
s00gu := uint32(s00g8) * 0x101
s00bu := uint32(s00b8) * 0x101
s00r := float64(s00ru) s00r := float64(s00ru)
s00g := float64(s00gu) s00g := float64(s00gu)
s00b := float64(s00bu) s00b := float64(s00bu)
s00a := float64(s00au) s10i := src.YOffset(sx1, sy0)
s10ru, s10gu, s10bu, s10au := src.At(sx1, sy0).RGBA() s10j := src.COffset(sx1, sy0)
s10r8, s10g8, s10b8 := color.YCbCrToRGB(src.Y[s10i], src.Cb[s10j], src.Cr[s10j])
s10ru := uint32(s10r8) * 0x101
s10gu := uint32(s10g8) * 0x101
s10bu := uint32(s10b8) * 0x101
s10r := float64(s10ru) s10r := float64(s10ru)
s10g := float64(s10gu) s10g := float64(s10gu)
s10b := float64(s10bu) s10b := float64(s10bu)
s10a := float64(s10au)
s10r = xFrac1*s00r + xFrac0*s10r s10r = xFrac1*s00r + xFrac0*s10r
s10g = xFrac1*s00g + xFrac0*s10g s10g = xFrac1*s00g + xFrac0*s10g
s10b = xFrac1*s00b + xFrac0*s10b s10b = xFrac1*s00b + xFrac0*s10b
s10a = xFrac1*s00a + xFrac0*s10a s01i := src.YOffset(sx0, sy1)
s01ru, s01gu, s01bu, s01au := src.At(sx0, sy1).RGBA() s01j := src.COffset(sx0, sy1)
s01r8, s01g8, s01b8 := color.YCbCrToRGB(src.Y[s01i], src.Cb[s01j], src.Cr[s01j])
s01ru := uint32(s01r8) * 0x101
s01gu := uint32(s01g8) * 0x101
s01bu := uint32(s01b8) * 0x101
s01r := float64(s01ru) s01r := float64(s01ru)
s01g := float64(s01gu) s01g := float64(s01gu)
s01b := float64(s01bu) s01b := float64(s01bu)
s01a := float64(s01au) s11i := src.YOffset(sx1, sy1)
s11ru, s11gu, s11bu, s11au := src.At(sx1, sy1).RGBA() s11j := src.COffset(sx1, sy1)
s11r8, s11g8, s11b8 := color.YCbCrToRGB(src.Y[s11i], src.Cb[s11j], src.Cr[s11j])
s11ru := uint32(s11r8) * 0x101
s11gu := uint32(s11g8) * 0x101
s11bu := uint32(s11b8) * 0x101
s11r := float64(s11ru) s11r := float64(s11ru)
s11g := float64(s11gu) s11g := float64(s11gu)
s11b := float64(s11bu) s11b := float64(s11bu)
s11a := float64(s11au)
s11r = xFrac1*s01r + xFrac0*s11r s11r = xFrac1*s01r + xFrac0*s11r
s11g = xFrac1*s01g + xFrac0*s11g s11g = xFrac1*s01g + xFrac0*s11g
s11b = xFrac1*s01b + xFrac0*s11b s11b = xFrac1*s01b + xFrac0*s11b
s11a = xFrac1*s01a + xFrac0*s11a
s11r = yFrac1*s10r + yFrac0*s11r s11r = yFrac1*s10r + yFrac0*s11r
s11g = yFrac1*s10g + yFrac0*s11g s11g = yFrac1*s10g + yFrac0*s11g
s11b = yFrac1*s10b + yFrac0*s11b s11b = yFrac1*s10b + yFrac0*s11b
s11a = yFrac1*s10a + yFrac0*s11a
dst.Pix[d+0] = uint8(uint32(s11r) >> 8) dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
dst.Pix[d+1] = uint8(uint32(s11g) >> 8) dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
dst.Pix[d+2] = uint8(uint32(s11b) >> 8) dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
dst.Pix[d+3] = uint8(uint32(s11a) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -1981,42 +2099,55 @@ func (ablInterpolator) transform_RGBA_YCbCr420(dst *image.RGBA, dr, adr image.Re
yFrac0, yFrac1 = 1, 0 yFrac0, yFrac1 = 1, 0
} }
s00ru, s00gu, s00bu, s00au := src.At(sx0, sy0).RGBA() s00i := src.YOffset(sx0, sy0)
s00j := src.COffset(sx0, sy0)
s00r8, s00g8, s00b8 := color.YCbCrToRGB(src.Y[s00i], src.Cb[s00j], src.Cr[s00j])
s00ru := uint32(s00r8) * 0x101
s00gu := uint32(s00g8) * 0x101
s00bu := uint32(s00b8) * 0x101
s00r := float64(s00ru) s00r := float64(s00ru)
s00g := float64(s00gu) s00g := float64(s00gu)
s00b := float64(s00bu) s00b := float64(s00bu)
s00a := float64(s00au) s10i := src.YOffset(sx1, sy0)
s10ru, s10gu, s10bu, s10au := src.At(sx1, sy0).RGBA() s10j := src.COffset(sx1, sy0)
s10r8, s10g8, s10b8 := color.YCbCrToRGB(src.Y[s10i], src.Cb[s10j], src.Cr[s10j])
s10ru := uint32(s10r8) * 0x101
s10gu := uint32(s10g8) * 0x101
s10bu := uint32(s10b8) * 0x101
s10r := float64(s10ru) s10r := float64(s10ru)
s10g := float64(s10gu) s10g := float64(s10gu)
s10b := float64(s10bu) s10b := float64(s10bu)
s10a := float64(s10au)
s10r = xFrac1*s00r + xFrac0*s10r s10r = xFrac1*s00r + xFrac0*s10r
s10g = xFrac1*s00g + xFrac0*s10g s10g = xFrac1*s00g + xFrac0*s10g
s10b = xFrac1*s00b + xFrac0*s10b s10b = xFrac1*s00b + xFrac0*s10b
s10a = xFrac1*s00a + xFrac0*s10a s01i := src.YOffset(sx0, sy1)
s01ru, s01gu, s01bu, s01au := src.At(sx0, sy1).RGBA() s01j := src.COffset(sx0, sy1)
s01r8, s01g8, s01b8 := color.YCbCrToRGB(src.Y[s01i], src.Cb[s01j], src.Cr[s01j])
s01ru := uint32(s01r8) * 0x101
s01gu := uint32(s01g8) * 0x101
s01bu := uint32(s01b8) * 0x101
s01r := float64(s01ru) s01r := float64(s01ru)
s01g := float64(s01gu) s01g := float64(s01gu)
s01b := float64(s01bu) s01b := float64(s01bu)
s01a := float64(s01au) s11i := src.YOffset(sx1, sy1)
s11ru, s11gu, s11bu, s11au := src.At(sx1, sy1).RGBA() s11j := src.COffset(sx1, sy1)
s11r8, s11g8, s11b8 := color.YCbCrToRGB(src.Y[s11i], src.Cb[s11j], src.Cr[s11j])
s11ru := uint32(s11r8) * 0x101
s11gu := uint32(s11g8) * 0x101
s11bu := uint32(s11b8) * 0x101
s11r := float64(s11ru) s11r := float64(s11ru)
s11g := float64(s11gu) s11g := float64(s11gu)
s11b := float64(s11bu) s11b := float64(s11bu)
s11a := float64(s11au)
s11r = xFrac1*s01r + xFrac0*s11r s11r = xFrac1*s01r + xFrac0*s11r
s11g = xFrac1*s01g + xFrac0*s11g s11g = xFrac1*s01g + xFrac0*s11g
s11b = xFrac1*s01b + xFrac0*s11b s11b = xFrac1*s01b + xFrac0*s11b
s11a = xFrac1*s01a + xFrac0*s11a
s11r = yFrac1*s10r + yFrac0*s11r s11r = yFrac1*s10r + yFrac0*s11r
s11g = yFrac1*s10g + yFrac0*s11g s11g = yFrac1*s10g + yFrac0*s11g
s11b = yFrac1*s10b + yFrac0*s11b s11b = yFrac1*s10b + yFrac0*s11b
s11a = yFrac1*s10a + yFrac0*s11a
dst.Pix[d+0] = uint8(uint32(s11r) >> 8) dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
dst.Pix[d+1] = uint8(uint32(s11g) >> 8) dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
dst.Pix[d+2] = uint8(uint32(s11b) >> 8) dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
dst.Pix[d+3] = uint8(uint32(s11a) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -2062,42 +2193,55 @@ func (ablInterpolator) transform_RGBA_YCbCr440(dst *image.RGBA, dr, adr image.Re
yFrac0, yFrac1 = 1, 0 yFrac0, yFrac1 = 1, 0
} }
s00ru, s00gu, s00bu, s00au := src.At(sx0, sy0).RGBA() s00i := src.YOffset(sx0, sy0)
s00j := src.COffset(sx0, sy0)
s00r8, s00g8, s00b8 := color.YCbCrToRGB(src.Y[s00i], src.Cb[s00j], src.Cr[s00j])
s00ru := uint32(s00r8) * 0x101
s00gu := uint32(s00g8) * 0x101
s00bu := uint32(s00b8) * 0x101
s00r := float64(s00ru) s00r := float64(s00ru)
s00g := float64(s00gu) s00g := float64(s00gu)
s00b := float64(s00bu) s00b := float64(s00bu)
s00a := float64(s00au) s10i := src.YOffset(sx1, sy0)
s10ru, s10gu, s10bu, s10au := src.At(sx1, sy0).RGBA() s10j := src.COffset(sx1, sy0)
s10r8, s10g8, s10b8 := color.YCbCrToRGB(src.Y[s10i], src.Cb[s10j], src.Cr[s10j])
s10ru := uint32(s10r8) * 0x101
s10gu := uint32(s10g8) * 0x101
s10bu := uint32(s10b8) * 0x101
s10r := float64(s10ru) s10r := float64(s10ru)
s10g := float64(s10gu) s10g := float64(s10gu)
s10b := float64(s10bu) s10b := float64(s10bu)
s10a := float64(s10au)
s10r = xFrac1*s00r + xFrac0*s10r s10r = xFrac1*s00r + xFrac0*s10r
s10g = xFrac1*s00g + xFrac0*s10g s10g = xFrac1*s00g + xFrac0*s10g
s10b = xFrac1*s00b + xFrac0*s10b s10b = xFrac1*s00b + xFrac0*s10b
s10a = xFrac1*s00a + xFrac0*s10a s01i := src.YOffset(sx0, sy1)
s01ru, s01gu, s01bu, s01au := src.At(sx0, sy1).RGBA() s01j := src.COffset(sx0, sy1)
s01r8, s01g8, s01b8 := color.YCbCrToRGB(src.Y[s01i], src.Cb[s01j], src.Cr[s01j])
s01ru := uint32(s01r8) * 0x101
s01gu := uint32(s01g8) * 0x101
s01bu := uint32(s01b8) * 0x101
s01r := float64(s01ru) s01r := float64(s01ru)
s01g := float64(s01gu) s01g := float64(s01gu)
s01b := float64(s01bu) s01b := float64(s01bu)
s01a := float64(s01au) s11i := src.YOffset(sx1, sy1)
s11ru, s11gu, s11bu, s11au := src.At(sx1, sy1).RGBA() s11j := src.COffset(sx1, sy1)
s11r8, s11g8, s11b8 := color.YCbCrToRGB(src.Y[s11i], src.Cb[s11j], src.Cr[s11j])
s11ru := uint32(s11r8) * 0x101
s11gu := uint32(s11g8) * 0x101
s11bu := uint32(s11b8) * 0x101
s11r := float64(s11ru) s11r := float64(s11ru)
s11g := float64(s11gu) s11g := float64(s11gu)
s11b := float64(s11bu) s11b := float64(s11bu)
s11a := float64(s11au)
s11r = xFrac1*s01r + xFrac0*s11r s11r = xFrac1*s01r + xFrac0*s11r
s11g = xFrac1*s01g + xFrac0*s11g s11g = xFrac1*s01g + xFrac0*s11g
s11b = xFrac1*s01b + xFrac0*s11b s11b = xFrac1*s01b + xFrac0*s11b
s11a = xFrac1*s01a + xFrac0*s11a
s11r = yFrac1*s10r + yFrac0*s11r s11r = yFrac1*s10r + yFrac0*s11r
s11g = yFrac1*s10g + yFrac0*s11g s11g = yFrac1*s10g + yFrac0*s11g
s11b = yFrac1*s10b + yFrac0*s11b s11b = yFrac1*s10b + yFrac0*s11b
s11a = yFrac1*s10a + yFrac0*s11a
dst.Pix[d+0] = uint8(uint32(s11r) >> 8) dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
dst.Pix[d+1] = uint8(uint32(s11g) >> 8) dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
dst.Pix[d+2] = uint8(uint32(s11b) >> 8) dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
dst.Pix[d+3] = uint8(uint32(s11a) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -2486,19 +2630,23 @@ func (z *kernelScaler) scaleX_YCbCr444(tmp [][4]float64, src *image.YCbCr, sr im
t := 0 t := 0
for y := int32(0); y < z.sh; y++ { for y := int32(0); y < z.sh; y++ {
for _, s := range z.horizontal.sources { for _, s := range z.horizontal.sources {
var pr, pg, pb, pa float64 var pr, pg, pb float64
for _, c := range z.horizontal.contribs[s.i:s.j] { for _, c := range z.horizontal.contribs[s.i:s.j] {
pru, pgu, pbu, pau := src.At(sr.Min.X+int(c.coord), sr.Min.Y+int(y)).RGBA() pi := src.YOffset(sr.Min.X+int(c.coord), sr.Min.Y+int(y))
pj := src.COffset(sr.Min.X+int(c.coord), sr.Min.Y+int(y))
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pru := uint32(pr8) * 0x101
pgu := uint32(pg8) * 0x101
pbu := uint32(pb8) * 0x101
pr += float64(pru) * c.weight pr += float64(pru) * c.weight
pg += float64(pgu) * c.weight pg += float64(pgu) * c.weight
pb += float64(pbu) * c.weight pb += float64(pbu) * c.weight
pa += float64(pau) * c.weight
} }
tmp[t] = [4]float64{ tmp[t] = [4]float64{
pr * s.invTotalWeightFFFF, pr * s.invTotalWeightFFFF,
pg * s.invTotalWeightFFFF, pg * s.invTotalWeightFFFF,
pb * s.invTotalWeightFFFF, pb * s.invTotalWeightFFFF,
pa * s.invTotalWeightFFFF, 1,
} }
t++ t++
} }
@ -2509,19 +2657,23 @@ func (z *kernelScaler) scaleX_YCbCr422(tmp [][4]float64, src *image.YCbCr, sr im
t := 0 t := 0
for y := int32(0); y < z.sh; y++ { for y := int32(0); y < z.sh; y++ {
for _, s := range z.horizontal.sources { for _, s := range z.horizontal.sources {
var pr, pg, pb, pa float64 var pr, pg, pb float64
for _, c := range z.horizontal.contribs[s.i:s.j] { for _, c := range z.horizontal.contribs[s.i:s.j] {
pru, pgu, pbu, pau := src.At(sr.Min.X+int(c.coord), sr.Min.Y+int(y)).RGBA() pi := src.YOffset(sr.Min.X+int(c.coord), sr.Min.Y+int(y))
pj := src.COffset(sr.Min.X+int(c.coord), sr.Min.Y+int(y))
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pru := uint32(pr8) * 0x101
pgu := uint32(pg8) * 0x101
pbu := uint32(pb8) * 0x101
pr += float64(pru) * c.weight pr += float64(pru) * c.weight
pg += float64(pgu) * c.weight pg += float64(pgu) * c.weight
pb += float64(pbu) * c.weight pb += float64(pbu) * c.weight
pa += float64(pau) * c.weight
} }
tmp[t] = [4]float64{ tmp[t] = [4]float64{
pr * s.invTotalWeightFFFF, pr * s.invTotalWeightFFFF,
pg * s.invTotalWeightFFFF, pg * s.invTotalWeightFFFF,
pb * s.invTotalWeightFFFF, pb * s.invTotalWeightFFFF,
pa * s.invTotalWeightFFFF, 1,
} }
t++ t++
} }
@ -2532,19 +2684,23 @@ func (z *kernelScaler) scaleX_YCbCr420(tmp [][4]float64, src *image.YCbCr, sr im
t := 0 t := 0
for y := int32(0); y < z.sh; y++ { for y := int32(0); y < z.sh; y++ {
for _, s := range z.horizontal.sources { for _, s := range z.horizontal.sources {
var pr, pg, pb, pa float64 var pr, pg, pb float64
for _, c := range z.horizontal.contribs[s.i:s.j] { for _, c := range z.horizontal.contribs[s.i:s.j] {
pru, pgu, pbu, pau := src.At(sr.Min.X+int(c.coord), sr.Min.Y+int(y)).RGBA() pi := src.YOffset(sr.Min.X+int(c.coord), sr.Min.Y+int(y))
pj := src.COffset(sr.Min.X+int(c.coord), sr.Min.Y+int(y))
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pru := uint32(pr8) * 0x101
pgu := uint32(pg8) * 0x101
pbu := uint32(pb8) * 0x101
pr += float64(pru) * c.weight pr += float64(pru) * c.weight
pg += float64(pgu) * c.weight pg += float64(pgu) * c.weight
pb += float64(pbu) * c.weight pb += float64(pbu) * c.weight
pa += float64(pau) * c.weight
} }
tmp[t] = [4]float64{ tmp[t] = [4]float64{
pr * s.invTotalWeightFFFF, pr * s.invTotalWeightFFFF,
pg * s.invTotalWeightFFFF, pg * s.invTotalWeightFFFF,
pb * s.invTotalWeightFFFF, pb * s.invTotalWeightFFFF,
pa * s.invTotalWeightFFFF, 1,
} }
t++ t++
} }
@ -2555,19 +2711,23 @@ func (z *kernelScaler) scaleX_YCbCr440(tmp [][4]float64, src *image.YCbCr, sr im
t := 0 t := 0
for y := int32(0); y < z.sh; y++ { for y := int32(0); y < z.sh; y++ {
for _, s := range z.horizontal.sources { for _, s := range z.horizontal.sources {
var pr, pg, pb, pa float64 var pr, pg, pb float64
for _, c := range z.horizontal.contribs[s.i:s.j] { for _, c := range z.horizontal.contribs[s.i:s.j] {
pru, pgu, pbu, pau := src.At(sr.Min.X+int(c.coord), sr.Min.Y+int(y)).RGBA() pi := src.YOffset(sr.Min.X+int(c.coord), sr.Min.Y+int(y))
pj := src.COffset(sr.Min.X+int(c.coord), sr.Min.Y+int(y))
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pru := uint32(pr8) * 0x101
pgu := uint32(pg8) * 0x101
pbu := uint32(pb8) * 0x101
pr += float64(pru) * c.weight pr += float64(pru) * c.weight
pg += float64(pgu) * c.weight pg += float64(pgu) * c.weight
pb += float64(pbu) * c.weight pb += float64(pbu) * c.weight
pa += float64(pau) * c.weight
} }
tmp[t] = [4]float64{ tmp[t] = [4]float64{
pr * s.invTotalWeightFFFF, pr * s.invTotalWeightFFFF,
pg * s.invTotalWeightFFFF, pg * s.invTotalWeightFFFF,
pb * s.invTotalWeightFFFF, pb * s.invTotalWeightFFFF,
pa * s.invTotalWeightFFFF, 1,
} }
t++ t++
} }
@ -3102,22 +3262,26 @@ func (q *Kernel) transform_RGBA_YCbCr444(dst *image.RGBA, dr, adr image.Rectangl
yWeights[y] /= totalYWeight yWeights[y] /= totalYWeight
} }
var pr, pg, pb, pa float64 var pr, pg, pb float64
for ky := iy; ky < jy; ky++ { for ky := iy; ky < jy; ky++ {
yWeight := yWeights[ky-iy] yWeight := yWeights[ky-iy]
for kx := ix; kx < jx; kx++ { for kx := ix; kx < jx; kx++ {
w := xWeights[kx-ix] * yWeight w := xWeights[kx-ix] * yWeight
pru, pgu, pbu, pau := src.At(kx, ky).RGBA() pi := src.YOffset(kx, ky)
pj := src.COffset(kx, ky)
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pru := uint32(pr8) * 0x101
pgu := uint32(pg8) * 0x101
pbu := uint32(pb8) * 0x101
pr += float64(pru) * w pr += float64(pru) * w
pg += float64(pgu) * w pg += float64(pgu) * w
pb += float64(pbu) * w pb += float64(pbu) * w
pa += float64(pau) * w
} }
} }
dst.Pix[d+0] = uint8(fffftou(pr) >> 8) dst.Pix[d+0] = uint8(fffftou(pr) >> 8)
dst.Pix[d+1] = uint8(fffftou(pg) >> 8) dst.Pix[d+1] = uint8(fffftou(pg) >> 8)
dst.Pix[d+2] = uint8(fffftou(pb) >> 8) dst.Pix[d+2] = uint8(fffftou(pb) >> 8)
dst.Pix[d+3] = uint8(fffftou(pa) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -3197,22 +3361,26 @@ func (q *Kernel) transform_RGBA_YCbCr422(dst *image.RGBA, dr, adr image.Rectangl
yWeights[y] /= totalYWeight yWeights[y] /= totalYWeight
} }
var pr, pg, pb, pa float64 var pr, pg, pb float64
for ky := iy; ky < jy; ky++ { for ky := iy; ky < jy; ky++ {
yWeight := yWeights[ky-iy] yWeight := yWeights[ky-iy]
for kx := ix; kx < jx; kx++ { for kx := ix; kx < jx; kx++ {
w := xWeights[kx-ix] * yWeight w := xWeights[kx-ix] * yWeight
pru, pgu, pbu, pau := src.At(kx, ky).RGBA() pi := src.YOffset(kx, ky)
pj := src.COffset(kx, ky)
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pru := uint32(pr8) * 0x101
pgu := uint32(pg8) * 0x101
pbu := uint32(pb8) * 0x101
pr += float64(pru) * w pr += float64(pru) * w
pg += float64(pgu) * w pg += float64(pgu) * w
pb += float64(pbu) * w pb += float64(pbu) * w
pa += float64(pau) * w
} }
} }
dst.Pix[d+0] = uint8(fffftou(pr) >> 8) dst.Pix[d+0] = uint8(fffftou(pr) >> 8)
dst.Pix[d+1] = uint8(fffftou(pg) >> 8) dst.Pix[d+1] = uint8(fffftou(pg) >> 8)
dst.Pix[d+2] = uint8(fffftou(pb) >> 8) dst.Pix[d+2] = uint8(fffftou(pb) >> 8)
dst.Pix[d+3] = uint8(fffftou(pa) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -3292,22 +3460,26 @@ func (q *Kernel) transform_RGBA_YCbCr420(dst *image.RGBA, dr, adr image.Rectangl
yWeights[y] /= totalYWeight yWeights[y] /= totalYWeight
} }
var pr, pg, pb, pa float64 var pr, pg, pb float64
for ky := iy; ky < jy; ky++ { for ky := iy; ky < jy; ky++ {
yWeight := yWeights[ky-iy] yWeight := yWeights[ky-iy]
for kx := ix; kx < jx; kx++ { for kx := ix; kx < jx; kx++ {
w := xWeights[kx-ix] * yWeight w := xWeights[kx-ix] * yWeight
pru, pgu, pbu, pau := src.At(kx, ky).RGBA() pi := src.YOffset(kx, ky)
pj := src.COffset(kx, ky)
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pru := uint32(pr8) * 0x101
pgu := uint32(pg8) * 0x101
pbu := uint32(pb8) * 0x101
pr += float64(pru) * w pr += float64(pru) * w
pg += float64(pgu) * w pg += float64(pgu) * w
pb += float64(pbu) * w pb += float64(pbu) * w
pa += float64(pau) * w
} }
} }
dst.Pix[d+0] = uint8(fffftou(pr) >> 8) dst.Pix[d+0] = uint8(fffftou(pr) >> 8)
dst.Pix[d+1] = uint8(fffftou(pg) >> 8) dst.Pix[d+1] = uint8(fffftou(pg) >> 8)
dst.Pix[d+2] = uint8(fffftou(pb) >> 8) dst.Pix[d+2] = uint8(fffftou(pb) >> 8)
dst.Pix[d+3] = uint8(fffftou(pa) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }
@ -3387,22 +3559,26 @@ func (q *Kernel) transform_RGBA_YCbCr440(dst *image.RGBA, dr, adr image.Rectangl
yWeights[y] /= totalYWeight yWeights[y] /= totalYWeight
} }
var pr, pg, pb, pa float64 var pr, pg, pb float64
for ky := iy; ky < jy; ky++ { for ky := iy; ky < jy; ky++ {
yWeight := yWeights[ky-iy] yWeight := yWeights[ky-iy]
for kx := ix; kx < jx; kx++ { for kx := ix; kx < jx; kx++ {
w := xWeights[kx-ix] * yWeight w := xWeights[kx-ix] * yWeight
pru, pgu, pbu, pau := src.At(kx, ky).RGBA() pi := src.YOffset(kx, ky)
pj := src.COffset(kx, ky)
pr8, pg8, pb8 := color.YCbCrToRGB(src.Y[pi], src.Cb[pj], src.Cr[pj])
pru := uint32(pr8) * 0x101
pgu := uint32(pg8) * 0x101
pbu := uint32(pb8) * 0x101
pr += float64(pru) * w pr += float64(pru) * w
pg += float64(pgu) * w pg += float64(pgu) * w
pb += float64(pbu) * w pb += float64(pbu) * w
pa += float64(pau) * w
} }
} }
dst.Pix[d+0] = uint8(fffftou(pr) >> 8) dst.Pix[d+0] = uint8(fffftou(pr) >> 8)
dst.Pix[d+1] = uint8(fffftou(pg) >> 8) dst.Pix[d+1] = uint8(fffftou(pg) >> 8)
dst.Pix[d+2] = uint8(fffftou(pb) >> 8) dst.Pix[d+2] = uint8(fffftou(pb) >> 8)
dst.Pix[d+3] = uint8(fffftou(pa) >> 8) dst.Pix[d+3] = 0xff
} }
} }
} }