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| 1 | ################################################################################################# | |
| 2 | - | ###### nnedi3_resize16 v3.3 ###### by mawen1250 ###### 2015.09.02 ###### |
| 2 | + | ###### nnedi3_resize16 v3.3 ###### by mawen1250 ###### 2015.09.05 ###### |
| 3 | ################################################################################################# | |
| 4 | ###### from v2.8 on, nnedi3_resize16 only supports AviSynth v2.6+ ###### | |
| 5 | ###### Requirements: masktools v2.0a48, dither v1.25.1, nnedi3 v0.9.4.19, ###### | |
| 6 | ###### SmoothAdjust v3.00, Contra-Sharpen mod 3.4 (only for sharp>0), ###### | |
| 7 | ###### FTurn v1.4 (not necessarily required but will improve speed) ###### | |
| 8 | ################################################################################################# | |
| 9 | ###### accept Y8, YV12, YV16, YV24 input, use nnedi3 and Dither_resize16(nr) for scaling ###### | |
| 10 | ###### output format can be 8bit/16bit Y8/YV12/YV16/YV24 or RGB32/RGB24/RGB48YV12/RGB48Y ###### | |
| 11 | ################################################################################################# | |
| 12 | ###### "lsb_in"/"lsb" defines if input/output clip is stacked-16bit, default is False ###### | |
| 13 | ###### "output" defines colorspace of output clip, for RGB output "lsb" is ignored ###### | |
| 14 | ################################################################################################# | |
| 15 | ###### when horizontal/vertical scale ratio > "ratiothr", we assume it's upscaling ###### | |
| 16 | ###### when horizontal/vertical scale ratio <= "ratiothr", we assume it's downscaling ###### | |
| 17 | ###### by default ratiothr=1.125 ###### | |
| 18 | ###### nnedi3 is only applied when upscaling ###### | |
| 19 | ###### Dither_resize16 is used after nnedi3 upscaling to fix shift and scale to target res ###### | |
| 20 | ###### we call the nnedi3+Dither_resize16 scaling method "edge area resize" ###### | |
| 21 | ###### for downscaling, Dither_resize16 is applied instead, we call it "flat area resize" ###### | |
| 22 | ###### when mixed=True, nnedi3 (edge area) is combined with Dither_resize16 (flat area) ###### | |
| 23 | ################################################################################################# | |
| 24 | ||
| 25 | ||
| 26 | Function nnedi3_resize16(clip input, int "target_width", int "target_height", float "src_left", float "src_top", | |
| 27 | \ float "src_width", float "src_height", | |
| 28 | \ string "kernel_d", string "kernel_u", float "f_d", float "f_u", int "taps", | |
| 29 | \ float "a1", float "a2", float "a3", bool "invks_d", bool "invks_u", int "invkstaps", bool "noring", | |
| 30 | \ int "nsize", int "nns", int "qual", int "etype", int "pscrn", int "threads", | |
| 31 | \ float "ratiothr", bool "mixed", float "thr", float "elast", float "sharp", | |
| 32 | \ string "output", bool "tv_range", string "cplace", string "matrix", string "curve", float "gcor", | |
| 33 | \ int "Y", int "U", int "V", bool "lsb_in", bool "lsb", int "dither") | |
| 34 | {
| |
| 35 | ############################################################################################################################### | |
| 36 | ############################################################################################################################### | |
| 37 | # Parameters for merging edge&flat upscaled clip | |
| 38 | ||
| 39 | mixed = Default(mixed, True ) # nnedi3_resize16 uses nnedi3+Dither_resize16 for edge upscaling, this parameter defines whether to combine nnedi3+Dither_resize16(edge area) and Dither_resize16(flat area) in upscaling, which achieves higher precision upscaling result(mainly for flat area). | |
| 40 | thr = Default(thr, 1.0 ) # the same with "thr" in Dither_limit_dif16, valid value range is (0, 10.0]. | |
| 41 | elast = Default(elast, 1.5 ) # the same with "elast" in Dither_limit_dif16, valid value range is [1, 10.0]. | |
| 42 | # PDiff: pixel value diff between flat clip and edge clip (edge clip as reference) | |
| 43 | # ODiff: pixel value diff between merged clip and edge clip (edge clip as reference) | |
| 44 | # PDiff, thr and elast is used to calculate ODiff: | |
| 45 | # ODiff = PDiff when [PDiff <= thr] | |
| 46 | # ODiff gradually smooths from thr to 0 when [thr <= PDiff <= thr * elast] | |
| 47 | # for elast>2.0, ODiff reaches maximum when [PDiff == thr * elast / 2] | |
| 48 | # ODiff = 0 when [PDiff >= thr * elast] | |
| 49 | # | |
| 50 | # Larger "thr" will result in more pixels being taken from flat area upscaled clip (Dither_resize16) | |
| 51 | # Larger "thr" will result in less pixels being taken from edge area upscaled clip (nnedi3+Dither_resize16) | |
| 52 | # Larger "elast" will result in more pixels being blended from edge&flat area upscaled clip, for smoother merging | |
| 53 | ||
| 54 | ############################################################################################################################### | |
| 55 | ############################################################################################################################### | |
| 56 | # Parameters for nnedi3 | |
| 57 | ||
| 58 | nsize = Default(nsize, 0 ) | |
| 59 | nns = Default(nns, 3 ) | |
| 60 | qual = Default(qual, 2 ) | |
| 61 | etype = Default(etype, 0 ) | |
| 62 | pscrn = Default(pscrn, 2 ) | |
| 63 | threads = Default(threads, 0 ) | |
| 64 | ||
| 65 | ############################################################################################################################### | |
| 66 | ############################################################################################################################### | |
| 67 | # Parameters for Dither_resize16 | |
| 68 | ||
| 69 | kernel_d = Default(kernel_d, "Spline36" ) # "kernelh","kernelv" of Dither_resize16 used in downscaling | |
| 70 | kernel_u = Default(kernel_u, "Spline64" ) # "kernelh","kernelv" of Dither_resize16 used in upscaling | |
| 71 | f_d = Default(f_d, 1.0 ) # "fh","fv" of Dither_resize16 used in downscaling | |
| 72 | f_u = Default(f_u, 1.0 ) # "fh","fv" of Dither_resize16 used in upscaling | |
| 73 | taps = Default(taps, 4 ) # "taps" of Dither_resize16 | |
| 74 | # a1, a2, a3 # "a1","a2","a3" of Dither_resize16 | |
| 75 | invks_d = Default(invks_d, False ) # "invksh","invksv" of Dither_resize16 used in downscaling | |
| 76 | invks_u = Default(invks_u, False ) # "invksh","invksv" of Dither_resize16 used in upscaling | |
| 77 | invkstaps= Default(invkstaps,5 ) # "invkstaps" of Dither_resize16 | |
| 78 | ||
| 79 | noring = Default(noring, False ) # True use non-ringing algorithm of Dither_resize16 in flat area scaling | |
| 80 | # It actually doesn't make much sense for nnedi3_resize16(which uses nnedi3 for upscaling), | |
| 81 | # while it may produce blurring and aliasing when downscaling. | |
| 82 | # You'd better not set it to True unless you know what you are doing. | |
| 83 | resste = "Dither_resize16" | |
| 84 | resstf = noring ? "Dither_resize16nr" : "Dither_resize16" | |
| 85 | ||
| 86 | ############################################################################################################################### | |
| 87 | ############################################################################################################################### | |
| 88 | # Post-Process | |
| 89 | ||
| 90 | sharp = Default(sharp, 0 ) # Strength of Contra-Sharpen mod, for sharper edge. 0 means no sharpening, common value is about 100. | |
| 91 | # *Only* when {horrizontal or vertical}{scale ratio}>{ratiothr} will sharpening take effect (when nnedi3 is used for upscaling).
| |
| 92 | ||
| 93 | ############################################################################################################################### | |
| 94 | ############################################################################################################################### | |
| 95 | # Parameters for input/output | |
| 96 | ||
| 97 | Y = Default(Y, 3 ) | |
| 98 | U = Default(U, 3 ) | |
| 99 | V = Default(V, 3 ) | |
| 100 | lsb_in = Default(lsb_in, False ) # input clip is 16-bit stacked or not | |
| 101 | lsb = Default(lsb, False ) # output clip is 16-bit stacked or not | |
| 102 | tv_range = Default(tv_range, True ) # input clip is TV-range or PC-range | |
| 103 | dither = tv_range ? Default(dither, 6) : Default(dither, 50) # dither mode for 16-bit to 8-bit conversion | |
| 104 | ||
| 105 | sCSP = input.nnedi3_resize16_GetCSP() | |
| 106 | Assert(sCSP=="Y8" || sCSP=="YV12" || sCSP=="YV16" || sCSP=="YV24", """nnedi3_resize16: only accept Y8, YV12, YV16, YV24 input""") | |
| 107 | ||
| 108 | output = Default(output, sCSP ) | |
| 109 | # Output format. Possible values are: | |
| 110 | # "Y8" : Regular Y8 colorspace. Parameter "lsb" works on this output mode. | |
| 111 | # "YV12" : Regular YV12 colorspace. Parameter "lsb" works on this output mode. | |
| 112 | # "YV16" : Regular YV16 colorspace. Parameter "lsb" works on this output mode. | |
| 113 | # "YV24" : Regular YV24 colorspace. Parameter "lsb" works on this output mode. | |
| 114 | # "RGB32" : Regular RGB32 colorspace. | |
| 115 | # "RGB24" : Regular RGB24 colorspace. | |
| 116 | # "RGB48YV12": 48-bit RGB conveyed on YV12. Use it for rawvideo export only. Not suitable for display or further processing (it will look like garbage). | |
| 117 | # "RGB48Y" : 48-bit RGB. The components R, G and B are conveyed on three YV12 or Y8 (if supported) stack16 clips interleaved on a frame basis. | |
| 118 | ||
| 119 | ############################################################################################################################### | |
| 120 | ||
| 121 | IsY8 = sCSP == "Y8" || output == "Y8" | |
| 122 | sCSP = IsY8 ? "YV24" : sCSP | |
| 123 | ||
| 124 | IsRGB = LeftStr(output, 3) == "RGB" | |
| 125 | oCSP = IsRGB || IsY8 ? "YV24" : output | |
| 126 | ||
| 127 | Y = min(Y, 4) | |
| 128 | U = IsY8 ? 1 : min(U, 4) | |
| 129 | V = IsY8 ? 1 : min(V, 4) | |
| 130 | Yt = Y == 3 || Y == 4 | |
| 131 | Ut = U == 3 || U == 4 | |
| 132 | Vt = V == 3 || V == 4 | |
| 133 | Y31 = Yt ? 3 : 1 | |
| 134 | U31 = Ut ? 3 : 1 | |
| 135 | V31 = Vt ? 3 : 1 | |
| 136 | Y32 = Yt ? 3 : Y | |
| 137 | U32 = Ut ? 3 : U | |
| 138 | V32 = Vt ? 3 : V | |
| 139 | Y21 = Yt ? 2 : Y | |
| 140 | U21 = Ut ? 2 : U | |
| 141 | V21 = Vt ? 2 : V | |
| 142 | Y321 = Y > 1 ? 3 : Y | |
| 143 | U321 = U > 1 ? 3 : U | |
| 144 | V321 = V > 1 ? 3 : V | |
| 145 | ||
| 146 | sw = input.Width () | |
| 147 | sh = input.Height() | |
| 148 | sh = lsb_in ? sh/2 : sh | |
| 149 | swc = sCSP=="YV24" ? sw : sw/2 | |
| 150 | shc = sCSP=="YV12" ? sh/2 : sh | |
| 151 | HD = (sw > 1024 || sh > 576) ? True : False | |
| 152 | ||
| 153 | ############################################################################################################################### | |
| 154 | ||
| 155 | cplace = Default(cplace, "MPEG2") | |
| 156 | # Placement of the chroma subsamples. Can be one of these strings: | |
| 157 | # "MPEG1": 4:2:0 subsampling used in MPEG-1. Chroma samples are located on the center of each group of 4 pixels. | |
| 158 | # "MPEG2": Subsampling used in MPEG-2 4:2:x. Chroma samples are located on the left pixel column of the group. | |
| 159 | ||
| 160 | matrix = Default(matrix, HD ? "709" : "601") | |
| 161 | # The matrix used to convert the YUV pixels to computer RGB. Possible values are: | |
| 162 | # "601" : ITU-R BT.601 / ITU-R BT.470-2 / SMPTE 170M. For Standard Definition content. | |
| 163 | # "709" : ITU-R BT.709. For High Definition content. | |
| 164 | # "240" : SMPTE 240M | |
| 165 | # "FCC" : FCC | |
| 166 | # "YCgCo": YCgCo | |
| 167 | # When the parameter is not defined, ITU-R BT.601 and ITU-R BT.709 are automatically selected depending on the clip definition. | |
| 168 | ||
| 169 | curve = Default(curve, "linear" ) | |
| 170 | # type of gamma mapping(transfer characteristic) for gamma-aware resize(only take effects for Dither_resize16 processing parts) | |
| 171 | # possible values: | |
| 172 | # "709" - ITU-R BT.709 transfer curve for digital video | |
| 173 | # "601" - ITU-R BT.601 transfer curve, same as "709" | |
| 174 | # "170" - SMPTE 170M, same as "709" | |
| 175 | # "240" - SMPTE 240M (1987) | |
| 176 | # "srgb" - sRGB curve | |
| 177 | # "2020" - ITU-R BT.2020 transfer curve, for 12-bit content. For sources of lower bitdepth, use the "709" curve. | |
| 178 | # "linear" - linear curve without gamma-aware processing | |
| 179 | curve = Yt ? curve : "linear" | |
| 180 | gcor = Default(gcor, 1.0 ) # Gamma correction, applied on the linear part. | |
| 181 | ||
| 182 | ############################################################################################################################### | |
| 183 | ############################################################################################################################### | |
| 184 | # Parameters for scaling | |
| 185 | ||
| 186 | ow = Default(target_width, sw) | |
| 187 | oh = Default(target_height, sh) | |
| 188 | owc = oCSP=="YV24" ? ow : ow/2 | |
| 189 | ohc = oCSP=="YV12" ? oh/2 : oh | |
| 190 | Assert(!(output=="YV16" && ow!=owc*2), """nnedi3_resize16: width of YV16 output clip must be MOD2!""") | |
| 191 | Assert(!(output=="YV12" && ow!=owc*2), """nnedi3_resize16: width of YV12 output clip must be MOD2!""") | |
| 192 | Assert(!(output=="YV12" && oh!=ohc*2), """nnedi3_resize16: height of YV12 output clip must be MOD2!""") | |
| 193 | ||
| 194 | src_left = Default(src_left, 0 ) | |
| 195 | src_top = Default(src_top, 0 ) | |
| 196 | src_width = Default(src_width, sw) | |
| 197 | src_height = Default(src_height, sh) | |
| 198 | ||
| 199 | ############################################################################################################################### | |
| 200 | ############################################################################################################################### | |
| 201 | # Pre-Cropping/Padding Calculation | |
| 202 | ||
| 203 | prel = int(src_left/2) * 2 | |
| 204 | pret = int(src_top /2) * 2 | |
| 205 | prer = int((src_width > 0 ? -sw+src_left+src_width : src_width )/2) * 2 | |
| 206 | preb = int((src_height> 0 ? -sh+src_top+src_height : src_height)/2) * 2 | |
| 207 | prew = sw - prel + prer | |
| 208 | preh = sh - pret + preb | |
| 209 | ||
| 210 | sCSP=="YV24" ? \ | |
| 211 | Eval("""
| |
| 212 | swmod2 = sw /2*2 == sw | |
| 213 | pwmod2 = prew/2*2 == prew | |
| 214 | wpre = prew < sw | |
| 215 | prel = wpre ? prel : 0 | |
| 216 | prer = wpre ? pwmod2 ? prer : prer + 1 : swmod2 ? 0 : 1 | |
| 217 | prew = sw - prel + prer | |
| 218 | wpre = prew < sw || !swmod2 | |
| 219 | """) : \ | |
| 220 | Eval("""
| |
| 221 | swmod4 = sw /4*4 == sw | |
| 222 | pwmod4 = prew/4*4 == prew | |
| 223 | wpre = prew < sw | |
| 224 | prel = wpre ? prel : 0 | |
| 225 | prer = wpre ? pwmod4 ? prer : prer + 2 : swmod4 ? 0 : 2 | |
| 226 | prew = sw - prel + prer | |
| 227 | wpre = prew < sw || !swmod4 | |
| 228 | """) | |
| 229 | ||
| 230 | sCSP=="YV12" ? \ | |
| 231 | Eval("""
| |
| 232 | shmod4 = sh /4*4 == sh | |
| 233 | phmod4 = preh/4*4 == preh | |
| 234 | hpre = preh < sh | |
| 235 | pret = hpre ? pret : 0 | |
| 236 | preb = hpre ? phmod4 ? preb : preb + 2 : shmod4 ? 0 : 2 | |
| 237 | preh = sh - pret + preb | |
| 238 | hpre = preh < sh || !shmod4 | |
| 239 | """) : \ | |
| 240 | Eval("""
| |
| 241 | shmod2 = sh /2*2 == sh | |
| 242 | phmod2 = preh/2*2 == preh | |
| 243 | hpre = preh < sh | |
| 244 | pret = hpre ? pret : 0 | |
| 245 | preb = hpre ? phmod2 ? preb : preb + 1 : shmod2 ? 0 : 1 | |
| 246 | preh = sh - pret + preb | |
| 247 | hpre = preh < sh || !shmod2 | |
| 248 | """) | |
| 249 | ||
| 250 | src_width = src_width <=0 ? +sw-src_left+src_width : src_width | |
| 251 | src_height = src_height<=0 ? +sh-src_top+src_height : src_height | |
| 252 | src_left = wpre ? src_left-prel : src_left | |
| 253 | src_top = hpre ? src_top -pret : src_top | |
| 254 | ||
| 255 | src_leftc = sCSP=="YV24" ? src_left : src_left /2. | |
| 256 | src_topc = sCSP=="YV12" ? src_top /2. : src_top | |
| 257 | src_widthc = sCSP=="YV24" ? src_width : src_width /2. | |
| 258 | src_heightc = sCSP=="YV12" ? src_height/2. : src_height | |
| 259 | ||
| 260 | ############################################################################################################################### | |
| 261 | ############################################################################################################################### | |
| 262 | # Scaling Ratio Calculation | |
| 263 | ||
| 264 | ratiothr = Default(ratiothr, 1.125) # When scale ratio is larger than ratiothr, use nnedi3+Dither_resize16 upscale method instead of pure Dither_resize16. | |
| 265 | # when horizontal/vertical scale ratio > "ratiothr", we assume it's upscaling | |
| 266 | # when horizontal/vertical scale ratio <= "ratiothr", we assume it's downscaling | |
| 267 | ||
| 268 | ############################################################################################################################### | |
| 269 | ||
| 270 | yhratio = float(ow ) / float(src_width ) | |
| 271 | yvratio = float(oh ) / float(src_height ) | |
| 272 | chratio = float(owc) / float(src_widthc ) | |
| 273 | cvratio = float(ohc) / float(src_heightc) | |
| 274 | ||
| 275 | enable = yhratio!=1 || yvratio!=1 || chratio!=1 || cvratio!=1 || | |
| 276 | \ src_width !=int(src_width ) || src_height !=int(src_height ) || src_widthc !=int(src_widthc ) || src_heightc!=int(src_heightc) || | |
| 277 | \ src_left !=int(src_left ) || src_top !=int(src_top ) || src_leftc !=int(src_leftc ) || src_topc !=int(src_topc ) | |
| 278 | ||
| 279 | yhct = yhratio>ratiothr ? Ceil( log(yhratio/ratiothr) / log(2) ) : 0 | |
| 280 | yhrf = int(Pow(2, yhct)) | |
| 281 | yrhratio = yhratio/yhrf | |
| 282 | yvct = yvratio>ratiothr ? Ceil( log(yvratio/ratiothr) / log(2) ) : 0 | |
| 283 | yvrf = int(Pow(2, yvct)) | |
| 284 | yrvratio = yvratio/yvrf | |
| 285 | ||
| 286 | chct = chratio>ratiothr ? Ceil( log(chratio/ratiothr) / log(2) ) : 0 | |
| 287 | chrf = int(Pow(2, chct)) | |
| 288 | crhratio = chratio/chrf | |
| 289 | cvct = cvratio>ratiothr ? Ceil( log(cvratio/ratiothr) / log(2) ) : 0 | |
| 290 | cvrf = int(Pow(2, cvct)) | |
| 291 | crvratio = cvratio/cvrf | |
| 292 | ||
| 293 | nonenny = yhct<=0 && yvct<=0 | |
| 294 | nonennc = chct<=0 && cvct<=0 | |
| 295 | nonenn = nonenny || nonennc | |
| 296 | ||
| 297 | Ynnt = Yt&&!nonenny | |
| 298 | Unnt = Ut&&!nonennc | |
| 299 | Vnnt = Vt&&!nonennc | |
| 300 | Ynn31 = Ynnt ? 3 : 1 | |
| 301 | Unn31 = Unnt ? 3 : 1 | |
| 302 | Vnn31 = Vnnt ? 3 : 1 | |
| 303 | Ynn = Yt&&nonenny ? 2 : Y | |
| 304 | Unn = Ut&&nonennc ? 2 : U | |
| 305 | Vnn = Vt&&nonennc ? 2 : V | |
| 306 | ||
| 307 | nnt = Ynnt || Unnt || Vnnt | |
| 308 | mixed = !nnt || !enable ? False : mixed | |
| 309 | ||
| 310 | ############################################################################################################################### | |
| 311 | ############################################################################################################################### | |
| 312 | # Shift Calculation | |
| 313 | ||
| 314 | yhshift = yhrf>=2 ? 0.5 : 0 # luma horizontal shift introduced by nnedi3_resize16_rpow2 (edge area resize) | |
| 315 | yvshift = yvrf>=2 ? 0.5 : 0 # luma vertical shift introduced by nnedi3_resize16_rpow2 (edge area resize) | |
| 316 | yhfix = -yhshift # value to fix luma horizontal shift introduced by nnedi3_resize16_rpow2 (edge area resize) | |
| 317 | yvfix = -yvshift # value to fix luma vertical shift introduced by nnedi3_resize16_rpow2 (edge area resize) | |
| 318 | ||
| 319 | chshift = oCSP=="YV24" ? sCSP=="YV24" ? chrf>=2 ? 0.50 : 0 | |
| 320 | \ : cplace=="MPEG1" ? chrf>=2 ? 0.50 : 0 | |
| 321 | \ : chrf>=2 ? 0.50-chrf/4. : -0.25 | |
| 322 | \ : sCSP=="YV24" ? cplace=="MPEG1" ? chrf>=2 ? 0.50 : 0 | |
| 323 | \ : chrf>=2 ? 0.75 : 0.25 | |
| 324 | \ : cplace=="MPEG1" ? chrf>=2 ? 0.50 : 0 | |
| 325 | \ : chrf>=2 ? 0.75-chrf/4. : 0 | |
| 326 | # (chrf/2-0.5)/2-(chrf/2-1) | |
| 327 | # chroma horizontal shift introduced by nnedi3_resize16_rpow2 (edge area resize) | |
| 328 | cvshift = cvrf>=2 ? 0.5 : 0 # chroma vertical shift introduced by nnedi3_resize16_rpow2 (edge area resize) | |
| 329 | chfix = -chshift # value to fix chroma horizontal shift introduced by nnedi3_resize16_rpow2 (edge area resize) | |
| 330 | cvfix = -cvshift # value to fix chroma vertical shift introduced by nnedi3_resize16_rpow2 (edge area resize) | |
| 331 | ||
| 332 | cphfixe = oCSP=="YV24" ? 0 | |
| 333 | \ : cplace=="MPEG1" ? 0 | |
| 334 | \ : 0.25-0.25/crhratio | |
| 335 | # value to fix chroma horizontal shift introduced by Dither_resize16 after nnedi3_resize16_rpow2 processing (edge area resize) | |
| 336 | ||
| 337 | cphfix = oCSP=="YV24" ? sCSP=="YV24" ? 0 | |
| 338 | \ : cplace=="MPEG1" ? 0 | |
| 339 | \ : 0.25 | |
| 340 | \ : sCSP=="YV24" ? cplace=="MPEG1" ? 0 | |
| 341 | \ : -0.5 | |
| 342 | \ : cplace=="MPEG1" ? 0 | |
| 343 | \ : 0.25-0.25/chratio | |
| 344 | # value to fix chroma horizontal shift introduced by Dither_resize16 (flat area resize) | |
| 345 | # this fixing only take effects when Y/U/V is processed separately(as Y8) in flat area scaling (colorspace transferring) | |
| 346 | # Dither_resize16 accepts "cplace" and correctly processes chroma placement for YUV input | |
| 347 | ||
| 348 | ############################################################################################################################### | |
| 349 | ############################################################################################################################### | |
| 350 | # Pre-Process | |
| 351 | ||
| 352 | input = wpre || hpre ? lsb_in ? input.Dither_resize16(wpre?prew:sw, hpre?preh:sh, wpre?prel:0, hpre?pret:0, | |
| 353 | \ wpre?prew:sw, hpre?preh:sh, kernel="point") | |
| 354 | \ : input.PointResize(wpre?prew:sw, hpre?preh:sh, wpre?prel:0, hpre?pret:0, wpre?prew:sw, hpre?preh:sh) | |
| 355 | \ : input | |
| 356 | input8 = lsb_in ? input.nnedi3_resize16_Down8(tv_range, Yt, Ut, Vt, mixed ? -1 : dither) : input | |
| 357 | input16 = lsb_in ? input : input.nnedi3_resize16_U16(tv_range, True, True, True) | |
| 358 | ||
| 359 | ############################################################################################################################### | |
| 360 | ############################################################################################################################### | |
| 361 | # nnedi3 upscale for edge area | |
| 362 | ||
| 363 | !(enable && nnt) ? NOP() : \ | |
| 364 | yhct==chct && yvct==cvct && sCSP=="YV12" ? \ | |
| 365 | Eval("""
| |
| 366 | edgenn = input8.nnedi3_resize16_rpow2(yvct, yhct, 1, 1, Yt, Ut, Vt, nsize, nns, qual, etype, pscrn, threads) | |
| 367 | edgennY = sharp>0 ? edgenn.CSmod(chroma=False, ss_w=1.00, ss_h=1.00, preblur=-4, Smethod=1, kernel=6, strength=sharp, Soothe=-1) | |
| 368 | \ .nnedi3_resize16_U16(tv_range, Yt, Ut, Vt) | |
| 369 | \ : edgenn.nnedi3_resize16_U16(tv_range, Yt, Ut, Vt) | |
| 370 | edgennU = edgennY.UToY8() | |
| 371 | edgennV = edgennY.VToY8() | |
| 372 | edgennY = edgennY.ConvertToY8() | |
| 373 | """) : \ | |
| 374 | Eval("""
| |
| 375 | edgennY = !Ynnt ? NOP() | |
| 376 | \ : sharp>0 ? input8.ConvertToY8 ().nnedi3_resize16_rpow2(yvct, yhct, 1, 1, Yt, False, False, | |
| 377 | \ nsize, nns, qual, etype, pscrn, threads).ConvertToYV12() | |
| 378 | \ .CSmod(chroma=False, ss_w=1.00, ss_h=1.00, preblur=-4, Smethod=1, kernel=6, strength=sharp, Soothe=-1) | |
| 379 | \ .ConvertToY8 ().nnedi3_resize16_U16(tv_range, Yt, False, False) | |
| 380 | \ : input8.ConvertToY8 ().nnedi3_resize16_rpow2(yvct, yhct, 1, 1, Yt, False, False, | |
| 381 | \ nsize, nns, qual, etype, pscrn, threads) | |
| 382 | \ .nnedi3_resize16_U16(tv_range, Yt, False, False) | |
| 383 | edgennU = !Unnt ? NOP() | |
| 384 | \ : input8.UToY8 ().nnedi3_resize16_rpow2(cvct, chct, 1, 1, Ut, False, False, | |
| 385 | \ nsize, nns, qual, etype, pscrn, threads) | |
| 386 | - | \ .ConvertToY8().nnedi3_resize16_U16(tv_range, Ut, False, False) |
| 386 | + | \ .nnedi3_resize16_U16(tv_range, Ut, False, False) |
| 387 | edgennV = !Vnnt ? NOP() | |
| 388 | \ : input8.VToY8 ().nnedi3_resize16_rpow2(cvct, chct, 1, 1, Vt, False, False, | |
| 389 | \ nsize, nns, qual, etype, pscrn, threads) | |
| 390 | - | \ .ConvertToY8().nnedi3_resize16_U16(tv_range, Vt, False, False) |
| 390 | + | \ .nnedi3_resize16_U16(tv_range, Vt, False, False) |
| 391 | """) | |
| 392 | ||
| 393 | ############################################################################################################################### | |
| 394 | ############################################################################################################################### | |
| 395 | # edge area resize & fix center shift | |
| 396 | ||
| 397 | yrh = yrhratio>ratiothr | |
| 398 | yrv = yrvratio>ratiothr | |
| 399 | crh = crhratio>ratiothr | |
| 400 | crv = crvratio>ratiothr | |
| 401 | ||
| 402 | !(enable && nnt) ? NOP() : \ | |
| 403 | Eval("""
| |
| 404 | edgennY = !Ynnt ? NOP() | |
| 405 | \ : curve=="linear" ? edgennY | |
| 406 | \ : edgennY.Dither_y_gamma_to_linear(tv_range, tv_range, curve, u=1, v=1, gcor=gcor) | |
| 407 | edgeY = !Ynnt ? input16.BlankClip(width=ow , height=oh *2, pixel_type="Y8", color_yuv=$008080) | |
| 408 | \ : edgennY.""" + resste + """(ow , oh , src_left *yhrf+yhfix , src_top *yvrf+yvfix, | |
| 409 | \ src_width *yhrf, src_height *yvrf, y=Y31, u=1 , v=1 , | |
| 410 | \ kernelh=yrh?kernel_u:kernel_d, kernelv=yrv?kernel_u:kernel_d, | |
| 411 | \ fh=yrh?f_u:f_d, fv=yrv?f_u:f_d, | |
| 412 | \ invksh=yrh?invks_u:invks_d, invksv=yrv?invks_u:invks_d, | |
| 413 | \ taps=taps, a1=a1, a2=a2, a3=a3, invkstaps=invkstaps | |
| 414 | \ ) | |
| 415 | edgeY = !Ynnt ? edgeY | |
| 416 | \ : curve=="linear" ? edgeY | |
| 417 | \ : edgeY .Dither_y_linear_to_gamma(tv_range, tv_range, curve, u=1, v=1, gcor=gcor) | |
| 418 | ||
| 419 | edgeU = !Unnt ? input16.BlankClip(width=owc, height=ohc*2, pixel_type="Y8", color_yuv=$008080) | |
| 420 | \ : edgennU.""" + resste + """(owc, ohc, src_leftc*chrf+chfix+cphfixe, src_topc*cvrf+cvfix, | |
| 421 | \ src_widthc*chrf, src_heightc*cvrf, y=U31, u=1 , v=1 , | |
| 422 | \ kernelh=crh?kernel_u:kernel_d, kernelv=crv?kernel_u:kernel_d, | |
| 423 | \ fh=crh?f_u:f_d, fv=crv?f_u:f_d, | |
| 424 | \ invksh=crh?invks_u:invks_d, invksv=crv?invks_u:invks_d, | |
| 425 | \ taps=taps, a1=a1, a2=a2, a3=a3, invkstaps=invkstaps | |
| 426 | \ ) | |
| 427 | ||
| 428 | edgeV = !Vnnt ? input16.BlankClip(width=owc, height=ohc*2, pixel_type="Y8", color_yuv=$008080) | |
| 429 | \ : edgennV.""" + resste + """(owc, ohc, src_leftc*chrf+chfix+cphfixe, src_topc*cvrf+cvfix, | |
| 430 | \ src_widthc*chrf, src_heightc*cvrf, y=V31, u=1 , v=1 , | |
| 431 | \ kernelh=crh?kernel_u:kernel_d, kernelv=crv?kernel_u:kernel_d, | |
| 432 | \ fh=crh?f_u:f_d, fv=crv?f_u:f_d, | |
| 433 | \ invksh=crh?invks_u:invks_d, invksv=crv?invks_u:invks_d, | |
| 434 | \ taps=taps, a1=a1, a2=a2, a3=a3, invkstaps=invkstaps | |
| 435 | \ ) | |
| 436 | ||
| 437 | edge16 = IsY8 ? edgeY : YToUV(edgeU, edgeV, edgeY) | |
| 438 | """) | |
| 439 | ||
| 440 | ############################################################################################################################### | |
| 441 | ############################################################################################################################### | |
| 442 | # flat area resize | |
| 443 | ||
| 444 | yh = yhratio>ratiothr | |
| 445 | yv = yvratio>ratiothr | |
| 446 | ch = chratio>ratiothr | |
| 447 | cv = cvratio>ratiothr | |
| 448 | ||
| 449 | !(enable && (mixed || !(Ynnt && Unnt && Vnnt))) ? NOP() : \ | |
| 450 | yhratio==chratio && yvratio==cvratio && (!mixed || (Ynnt && Unnt && Vnnt)) ? \ | |
| 451 | Eval("""
| |
| 452 | flat16 = curve=="linear" ? input16 | |
| 453 | \ : input16.Dither_y_gamma_to_linear(tv_range, tv_range, curve, u=U21, v=V21, gcor=gcor) | |
| 454 | flat16 = flat16. """ + resstf + """ | |
| 455 | \ (ow , oh , src_left , src_top , | |
| 456 | \ src_width , src_height , y=Y32, u=U32, v=V32, cplace=cplace, | |
| 457 | \ kernelh=yh?kernel_u:kernel_d, kernelv=yv?kernel_u:kernel_d, | |
| 458 | \ fh=yh?f_u:f_d, fv=yv?f_u:f_d, | |
| 459 | \ invksh=yh?invks_u:invks_d, invksv=yv?invks_u:invks_d, | |
| 460 | \ taps=taps, a1=a1, a2=a2, a3=a3, invkstaps=invkstaps | |
| 461 | \ ) | |
| 462 | flat16 = curve=="linear" ? flat16 | |
| 463 | \ : flat16 .Dither_y_linear_to_gamma(tv_range, tv_range, curve, u=U21, v=V21, gcor=gcor) | |
| 464 | """) : \ | |
| 465 | Eval("""
| |
| 466 | flatY = curve=="linear" ? input16.ConvertToY8() : | |
| 467 | \ (mixed || !Ynnt) && Yt ? input16.ConvertToY8().Dither_y_gamma_to_linear(tv_range, tv_range, curve, u=1 , v=1 , gcor=gcor) | |
| 468 | \ : input16.ConvertToY8() | |
| 469 | flatY = (mixed || !Ynnt) && Yt ? flatY .""" + resstf + """ | |
| 470 | \ (ow , oh , src_left , src_top , | |
| 471 | \ src_width , src_height , y=Y32, u=1 , v=1 , | |
| 472 | \ kernelh=yh?kernel_u:kernel_d, kernelv=yv?kernel_u:kernel_d, | |
| 473 | \ fh=yh?f_u:f_d, fv=yv?f_u:f_d, | |
| 474 | \ invksh=yh?invks_u:invks_d, invksv=yv?invks_u:invks_d, | |
| 475 | \ taps=taps, a1=a1, a2=a2, a3=a3, invkstaps=invkstaps | |
| 476 | \ ) | |
| 477 | \ : input16.BlankClip(width=ow , height=oh *2, pixel_type="Y8", color_yuv=$008080) | |
| 478 | flatY = curve=="linear" ? flatY : | |
| 479 | \ (mixed || !Ynnt) && Yt ? flatY .Dither_y_linear_to_gamma(tv_range, tv_range, curve, u=1 , v=1 , gcor=gcor) | |
| 480 | \ : flatY | |
| 481 | ||
| 482 | flatU = (mixed || !Unnt) && Ut ? input16.UToY8().""" + resstf + """ | |
| 483 | \ (owc, ohc, src_leftc +cphfix , src_topc , | |
| 484 | \ src_widthc , src_heightc , y=U32, u=1 , v=1 , | |
| 485 | \ kernelh=ch?kernel_u:kernel_d, kernelv=cv?kernel_u:kernel_d, | |
| 486 | \ fh=ch?f_u:f_d, fv=cv?f_u:f_d, | |
| 487 | \ invksh=ch?invks_u:invks_d, invksv=cv?invks_u:invks_d, | |
| 488 | \ taps=taps, a1=a1, a2=a2, a3=a3, invkstaps=invkstaps | |
| 489 | \ ) | |
| 490 | \ : input16.BlankClip(width=owc, height=ohc*2, pixel_type="Y8", color_yuv=$008080) | |
| 491 | ||
| 492 | flatV = (mixed || !Vnnt) && Vt ? input16.VToY8().""" + resstf + """ | |
| 493 | \ (owc, ohc, src_leftc +cphfix , src_topc , | |
| 494 | \ src_widthc , src_heightc , y=V32, u=1 , v=1 , | |
| 495 | \ kernelh=ch?kernel_u:kernel_d, kernelv=cv?kernel_u:kernel_d, | |
| 496 | \ fh=ch?f_u:f_d, fv=cv?f_u:f_d, | |
| 497 | \ invksh=ch?invks_u:invks_d, invksv=cv?invks_u:invks_d, | |
| 498 | \ taps=taps, a1=a1, a2=a2, a3=a3, invkstaps=invkstaps | |
| 499 | \ ) | |
| 500 | \ : input16.BlankClip(width=owc, height=ohc*2, pixel_type="Y8", color_yuv=$008080) | |
| 501 | ||
| 502 | flat16 = IsY8 ? flatY : YToUV(flatU, flatV, flatY) | |
| 503 | """) | |
| 504 | ||
| 505 | ############################################################################################################################### | |
| 506 | ############################################################################################################################### | |
| 507 | # Threshold Merging & Output | |
| 508 | ||
| 509 | enable ? \ | |
| 510 | Eval("""
| |
| 511 | merge16 = !nnt ? flat16 | |
| 512 | \ : mixed ? Dither_limit_dif16(flat16, edge16, thr=thr, elast=elast, y=Ynn, u=Unn, v=Vnn) | |
| 513 | \ : Ynnt==Unnt && Unnt==Vnnt || IsY8 ? edge16 | |
| 514 | \ : mt_lutxy(edge16, flat16, Y=Yt?Ynnt?2:4:1, U=Ut?Unnt?2:4:1, V=Vt?Vnnt?2:4:1) | |
| 515 | merge16 = IsY8 ? output=="Y8" ? merge16.ConvertToY8() : Eval("merge16.ConvertTo"+oCSP).Dither_lut16(Y=2, U=-32768, V=-32768) : merge16
| |
| 516 | ||
| 517 | final = IsRGB ? merge16.Dither_convert_yuv_to_rgb(matrix=matrix, tv_range=tv_range, lsb_in=True, mode=dither, output=output) | |
| 518 | \ : lsb ? merge16 | |
| 519 | \ : merge16.nnedi3_resize16_Down8(tv_range, True, !IsY8, !IsY8, dither) | |
| 520 | """) : \ | |
| 521 | Eval("""
| |
| 522 | shift16 = input16.Dither_resize16(ow, oh, src_left, src_top, src_width, src_height, kernel="point", y=Y, u=U, v=V) | |
| 523 | shift16 = IsY8 ? output=="Y8" ? merge16.ConvertToY8() : Eval("shift16.ConvertTo"+oCSP).Dither_lut16(Y=2, U=-32768, V=-32768) : shift16
| |
| 524 | ||
| 525 | final = IsRGB ? shift16.Dither_convert_yuv_to_rgb(matrix=matrix, tv_range=tv_range, lsb_in=True, mode=dither, output=output) | |
| 526 | \ : lsb ? shift16 | |
| 527 | \ : shift16.nnedi3_resize16_Down8(tv_range, True, !IsY8, !IsY8, dither) | |
| 528 | """) | |
| 529 | ||
| 530 | ||
| 531 | return final | |
| 532 | } | |
| 533 | ||
| 534 | ||
| 535 | Function nnedi3_resize16_rpow2(clip input, int "vct", int "hct", int "vfield", int "hfield", bool "Y", bool "U", bool "V", | |
| 536 | \ int "nsize", int "nns", int "qual", int "etype", int "pscrn", int "threads", bool "honly") | |
| 537 | {
| |
| 538 | vct = Default(vct, 1 ) | |
| 539 | hct = Default(hct, 1 ) | |
| 540 | vfield = Default(vfield, 1 ) | |
| 541 | hfield = Default(hfield, 1 ) | |
| 542 | Y = Default(Y, True ) | |
| 543 | U = Default(U, False ) | |
| 544 | V = Default(V, False ) | |
| 545 | honly = Default(honly, False ) | |
| 546 | ||
| 547 | ||
| 548 | input | |
| 549 | ||
| 550 | hct >= 1 ? \ | |
| 551 | Eval("""
| |
| 552 | (honly) ? last | |
| 553 | \ : Eval(" try { fturnright(chroma=U||V, mt=threads!=1) } catch(error_msg) { TurnRight() } ")
| |
| 554 | nnedi3(hfield, True, Y, U, V, nsize, nns, qual, etype, pscrn, threads) | |
| 555 | ||
| 556 | hct = hct - 1 | |
| 557 | honly = hct >= 1 | |
| 558 | hfield = 0 | |
| 559 | ||
| 560 | (honly) ? last | |
| 561 | \ : Eval(" try { fturnleft (chroma=U||V, mt=threads!=1) } catch(error_msg) { TurnLeft () } ")
| |
| 562 | """) : NOP() | |
| 563 | ||
| 564 | vct >= 1 && !honly ? \ | |
| 565 | Eval("""
| |
| 566 | nnedi3(vfield, True, Y, U, V, nsize, nns, qual, etype, pscrn, threads) | |
| 567 | ||
| 568 | vct = vct - 1 | |
| 569 | vfield = 0 | |
| 570 | """) : NOP() | |
| 571 | ||
| 572 | ||
| 573 | return Y||U||V ? vct <= 0 && hct <= 0 ? last | |
| 574 | \ : last.nnedi3_resize16_rpow2(vct, hct, vfield, hfield, Y, U, V, nsize, nns, qual, etype, pscrn, threads, honly) | |
| 575 | \ : input | |
| 576 | } | |
| 577 | ||
| 578 | ||
| 579 | Function nnedi3_resize16_GetCSP(clip c) | |
| 580 | {
| |
| 581 | return c.IsPlanar ? c.IsYV12 ? "YV12" : | |
| 582 | \ c.IsYV16 ? "YV16" : | |
| 583 | \ c.IsYV24 ? "YV24" : c.GetCSP_Y8_YV411 : | |
| 584 | \ c.IsYUY2 ? "YUY2" : | |
| 585 | \ c.IsRGB32 ? "RGB32" : | |
| 586 | \ c.IsRGB24 ? "RGB24" : "Unknown" | |
| 587 | ||
| 588 | ||
| 589 | Function GetCSP_Y8_YV411(clip c) {
| |
| 590 | try {
| |
| 591 | c.UtoY | |
| 592 | csp = "YV411" | |
| 593 | } catch ( error_msg ) {
| |
| 594 | csp = "Y8" | |
| 595 | } | |
| 596 | return csp | |
| 597 | } | |
| 598 | } | |
| 599 | ||
| 600 | /* | |
| 601 | Function nnedi3_resize16_RemoveGrain(clip input, int "mode", int "modeU", int "modeV") | |
| 602 | {
| |
| 603 | mode = Default(mode, 1 ) | |
| 604 | modeU = Default(modeU, mode ) | |
| 605 | modeV = Default(modeV, modeU ) | |
| 606 | ||
| 607 | ||
| 608 | iCSP = input.nnedi3_resize16_GetCSP() | |
| 609 | isYV12 = iCSP == "YV12" | |
| 610 | isY8 = iCSP == "Y8" | |
| 611 | ||
| 612 | sw = input.Width () | |
| 613 | sh = input.Height() | |
| 614 | wmod4 = sw/4*4 == sw | |
| 615 | hmod4 = sh/4*4 == sh | |
| 616 | mod4 = wmod4 && hmod4 | |
| 617 | padw = wmod4 ? sw : (sw/4+1)*4 | |
| 618 | padh = hmod4 ? sh : (sh/4+1)*4 | |
| 619 | ||
| 620 | ||
| 621 | input_m4 = mod4 ? input : input.PointResize(padw, padh, 0, 0, padw, padh) | |
| 622 | ||
| 623 | return isYV12 ? input.RemoveGrain(mode, modeU, modeV) | |
| 624 | \ : isY8 ? input_m4 .RemoveGrain(mode , -1, -1) | |
| 625 | \ .Crop(0, 0, sw, sh) | |
| 626 | \ : YToUV(input_m4.UToY8() .RemoveGrain(modeU, -1, -1), | |
| 627 | \ input_m4.VToY8() .RemoveGrain(modeV, -1, -1), | |
| 628 | \ input_m4.ConvertToY8() .RemoveGrain(mode , -1, -1)) | |
| 629 | \ .Crop(0, 0, sw, sh) | |
| 630 | } | |
| 631 | */ | |
| 632 | ||
| 633 | Function nnedi3_resize16_U16(clip input, bool "tv_range", bool "Y", bool "U", bool "V", int "dither", int "interp", bool "HQ") | |
| 634 | {
| |
| 635 | tv_range = Default(tv_range, True ) # define if input clip is of tv range(limited range) | |
| 636 | interp = Default(interp, 0 ) # use interp or not for SmoothCurve/SmoothCurve16 | |
| 637 | HQ = Default(HQ, False ) # enable high quality interpolation (slower) | |
| 638 | dither = Default(dither, -1 ) # -1 for no dither, 0 for ordered-dither, 1-100 for noise strength | |
| 639 | Y = Default(Y, True ) | |
| 640 | U = Default(U, True ) | |
| 641 | V = Default(V, True ) | |
| 642 | ||
| 643 | ||
| 644 | Assert(dither>=-1 && dither<=100 , """nnedi3_resize16_U16: "dither" ranges from -1 to 100!""") | |
| 645 | ||
| 646 | oCceil = (255-128) / (255.5-128) * (65535.5-32768) + 32768 | |
| 647 | ||
| 648 | Yexpr = "0-0 ; 255-65535 ;65535-65535 " | |
| 649 | Cexpr = "0-0.5;0.5-0.5;128-32768;255-"+String(oCceil)+";65535-"+String(oCceil) | |
| 650 | DfExpr = "0-0;65535-65535" | |
| 651 | Yexpr = Y ? Yexpr : DfExpr | |
| 652 | Uexpr = U ? Cexpr : DfExpr | |
| 653 | Vexpr = V ? Cexpr : DfExpr | |
| 654 | ||
| 655 | up = tv_range ? input.Dither_convert_8_to_16() | |
| 656 | \ : Y||U||V ? StackVertical(input.Dither_gen_null_lsb(), input) | |
| 657 | \ .SmoothCurve16(Ycurve=Yexpr, Ucurve=Uexpr, Vcurve=Vexpr, mode=0, interp=interp, HQ=HQ, | |
| 658 | \ dither=dither, limiter=False, TVrange=0) | |
| 659 | \ : StackVertical(input.Dither_gen_null_lsb(), input) | |
| 660 | ||
| 661 | ||
| 662 | return up | |
| 663 | } | |
| 664 | ||
| 665 | ||
| 666 | Function nnedi3_resize16_Down8(clip input, bool "tv_range", bool "Y", bool "U", bool "V", int "dither", int "interp", bool "HQ") | |
| 667 | {
| |
| 668 | tv_range = Default(tv_range, True ) # define if input clip is of tv range(limited range) | |
| 669 | interp = Default(interp, 0 ) # use interp or not for SmoothCurve/SmoothCurve16 | |
| 670 | HQ = Default(HQ, False ) # enable high quality interpolation (slower) | |
| 671 | dither = tv_range ? Default(dither, 6) : Default(dither, 50) # dither mode | |
| 672 | Y = Default(Y, True ) | |
| 673 | U = Default(U, True ) | |
| 674 | V = Default(V, True ) | |
| 675 | ||
| 676 | ||
| 677 | Assert(dither>=-1 && dither<=100 , """nnedi3_resize16_Down8: "dither" ranges from -1 to 100!""") | |
| 678 | ||
| 679 | iCceil = (255-128) / (255.5-128) * (65535.5-32768) + 32768 | |
| 680 | ||
| 681 | Yexpr = "0-0; 65535-255" | |
| 682 | Cexpr = "0-0.5;0.5-0.5;32768-128;"+String(iCceil)+"-255;65535-255" | |
| 683 | DfExpr = "0-0;65535-65535" | |
| 684 | Yexpr = Y ? Yexpr : DfExpr | |
| 685 | Uexpr = U ? Cexpr : DfExpr | |
| 686 | Vexpr = V ? Cexpr : DfExpr | |
| 687 | ||
| 688 | sDown = tv_range ? NOP() | |
| 689 | \ : input.SmoothCurve16(Ycurve=Yexpr, Ucurve=Uexpr, Vcurve=Vexpr, mode=0, interp=interp, HQ=HQ, | |
| 690 | \ dither=dither, limiter=False, TVrange=0) | |
| 691 | ||
| 692 | down = tv_range ? input.DitherPost(mode=dither, y=Y?3:1, u=U?3:1, v=V?3:1) | |
| 693 | \ : Y||U||V ? sDown.Dither_get_lsb() | |
| 694 | \ : input.Dither_get_msb() | |
| 695 | ||
| 696 | ||
| 697 | return down | |
| 698 | } |
