-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathsub_station_alpha.go
334 lines (307 loc) · 10.3 KB
/
sub_station_alpha.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
/*
This file implements writing the Sub Station Alpha file format (*.ssa).
It can generate SubRip content from a model.
Format specifications:
https://en.wikipedia.org/wiki/SubStation_Alpha
http://www.matroska.org/technical/specs/subtitles/ssa.html
http://moodub.free.fr/video/ass-specs.doc
An example SSA file:
[Script Info]
; This is a Sub Station Alpha v4 script.
; For Sub Station Alpha info and downloads,
; go to http://www.eswat.demon.co.uk/
Title: Neon Genesis Evangelion - Episode 26 (neutral Spanish)
Original Script: RoRo
Script Updated By: version 2.8.01
ScriptType: v4.00
Collisions: Normal
PlayResY: 600
PlayDepth: 0
Timer: 100,0000
[V4 Styles]
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, TertiaryColour, BackColour, Bold, Italic, BorderStyle, Outline, Shadow,
Alignment, MarginL, MarginR, MarginV, AlphaLevel, Encoding
Style: DefaultVCD, Arial,28,11861244,11861244,11861244,-2147483640,-1,0,1,1,2,2,30,30,30,0,0
[Events]
Format: Marked, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: Marked=0,0:00:01.18,0:00:06.85,DefaultVCD, NTP,0000,0000,0000,,{\pos(400,570)}Like an angel with pity on nobody
*/
package srtgears
import (
"io"
"os"
"strconv"
"strings"
"time"
)
// Mapping between our model Pos to *.ssa Alignment
var modelPosToSsaPos = map[Pos]int{
TopLeft: 5, Top: 6, TopRight: 7,
Left: 9, Center: 10, Right: 11,
BottomLeft: 1, Bottom: 2, BottomRight: 3,
}
// WriteSsaFile generates Sub Station Alpha format (*.ssa) and writes it to a file.
func WriteSsaFile(name string, sp *SubsPack) (err error) {
f, err := os.Create(name)
if err != nil {
return
}
defer f.Close()
return WriteSsaTo(f, sp)
}
// Info that determines a style. Contains the final format that goes into the SSA file.
type styleKey struct {
Pos int // Subtitle position
Color int // Subtitle color, in BBGGRR format
}
// keyFromSub creates a style key containing the style info of the subtitle.
func keyFromSub(s *Subtitle) (k styleKey) {
pos := s.Pos
if pos == PosNotSpecified {
pos = Bottom // Assign default position
}
k.Pos = modelPosToSsaPos[pos]
color := s.Color
for {
if color == "" {
// Unknown / unspecified color, assign a default value
k.Color = 0xefefef // light gray
break
}
if color[0] == '#' {
color = color[1:]
}
// Try hex form
if n, err := strconv.ParseInt(color, 16, 64); err == nil {
// It's a hex form (RRGGBB). Switch bytes.
v := int(n)
k.Color = (v & 0xff0000) >> 16
k.Color |= v & 0x00ff00
k.Color |= v & 0x0000ff << 16
break
}
// Not a hex form, try the standard color names
color = htmlColorRGB[strings.ToLower(color)] // If unknown, will be "" and handled in next iteration
}
return
}
// WriteSsaTo generates Sub Station Alpha format (*.ssa) and writes it to an io.Writer.
func WriteSsaTo(w io.Writer, sp *SubsPack) (err error) {
wr := &writer{w: w}
// Script Info section
wr.prn("[Script Info]") // This must be the first line
wr.prn("; This is a Sub Station Alpha v4 script.")
wr.prn("; ", HomePage)
wr.prn("Title: ")
wr.prn("Script Updated By: Srtgears")
wr.prn("ScriptType: v4.00")
wr.prn("Collisions: Normal")
wr.prn("PlayResY: 600")
wr.prn("PlayDepth: 0")
wr.prn("Timer: 100,0000")
// Styles section
wr.prn()
wr.prn("[V4 Styles]")
wr.prn("Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, TertiaryColour, BackColour, Bold, Italic, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, AlphaLevel, Encoding")
// Loop over all subtitles to determine what styles we have
styleKeys := make([]styleKey, len(sp.Subs)) // Store calculated style keys, we will need to interate over subs once more
stylesMap := map[styleKey]string{} // Unique style keys
styles := []styleKey{} // Maintain order of unique style keys for generation
for i, s := range sp.Subs {
styleKeys[i] = keyFromSub(s)
if _, ok := stylesMap[styleKeys[i]]; !ok {
// new style
styles = append(styles, styleKeys[i])
stylesMap[styleKeys[i]] = strconv.Itoa(len(styles))
}
}
// Now generate style definitions
for _, v := range styles {
wr.prf("Style: %s, Arial,28,%d,%d,%d,-2147483640,-1,0,1,1,2,%d,30,30,30,0,0",
stylesMap[v], v.Color, v.Color, v.Color, v.Pos)
wr.prn()
}
// Events section
wr.prn()
wr.prn("[Events]")
wr.prn("Format: Marked, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text")
printTime := func(t time.Duration) {
hour := t / time.Hour
min := (t % time.Hour) / time.Minute
sec := (t % time.Minute) / time.Second
ms := (t % time.Second) / time.Millisecond
wr.prf("%d:%02d:%02d.%02d", hour, min, sec, ms/10)
}
for i, s := range sp.Subs {
if wr.err != nil {
break
}
wr.pr("Dialogue: Marked=0,")
printTime(s.TimeIn)
wr.pr(",")
printTime(s.TimeOut)
wr.pr(",", stylesMap[styleKeys[i]], ",NA,0000,0000,0000,,")
// Texts
for i, line := range s.Lines {
// Note: HTML and controls not need to be removed (they are handled by video players)
wr.pr(line)
if i != len(s.Lines)-1 {
wr.pr(`\n`)
}
}
wr.prn()
}
return wr.err
}
// HTML color names and their RGB codes. SSA does not support color names.
// Src: http://www.w3schools.com/html/html_colornames.asp
var htmlColorRGB = map[string]string{
"aliceblue": "F0F8FF",
"antiquewhite": "FAEBD7",
"aqua": "00FFFF",
"aquamarine": "7FFFD4",
"azure": "F0FFFF",
"beige": "F5F5DC",
"bisque": "FFE4C4",
"black": "000000",
"blanchedalmond": "FFEBCD",
"blue": "0000FF",
"blueviolet": "8A2BE2",
"brown": "A52A2A",
"burlywood": "DEB887",
"cadetblue": "5F9EA0",
"chartreuse": "7FFF00",
"chocolate": "D2691E",
"coral": "FF7F50",
"cornflowerblue": "6495ED",
"cornsilk": "FFF8DC",
"crimson": "DC143C",
"cyan": "00FFFF",
"darkblue": "00008B",
"darkcyan": "008B8B",
"darkgoldenrod": "B8860B",
"darkgray": "A9A9A9",
"darkgrey": "A9A9A9",
"darkgreen": "006400",
"darkkhaki": "BDB76B",
"darkmagenta": "8B008B",
"darkolivegreen": "556B2F",
"darkorange": "FF8C00",
"darkorchid": "9932CC",
"darkred": "8B0000",
"darksalmon": "E9967A",
"darkseagreen": "8FBC8F",
"darkslateblue": "483D8B",
"darkslategray": "2F4F4F",
"darkslategrey": "2F4F4F",
"darkturquoise": "00CED1",
"darkviolet": "9400D3",
"deeppink": "FF1493",
"deepskyblue": "00BFFF",
"dimgray": "696969",
"dimgrey": "696969",
"dodgerblue": "1E90FF",
"firebrick": "B22222",
"floralwhite": "FFFAF0",
"forestgreen": "228B22",
"fuchsia": "FF00FF",
"gainsboro": "DCDCDC",
"ghostwhite": "F8F8FF",
"gold": "FFD700",
"goldenrod": "DAA520",
"gray": "808080",
"grey": "808080",
"green": "008000",
"greenyellow": "ADFF2F",
"honeydew": "F0FFF0",
"hotpink": "FF69B4",
"indianred": "CD5C5C",
"indigo": "4B0082",
"ivory": "FFFFF0",
"khaki": "F0E68C",
"lavender": "E6E6FA",
"lavenderblush": "FFF0F5",
"lawngreen": "7CFC00",
"lemonchiffon": "FFFACD",
"lightblue": "ADD8E6",
"lightcoral": "F08080",
"lightcyan": "E0FFFF",
"lightgoldenrodyellow": "FAFAD2",
"lightgray": "D3D3D3",
"lightgrey": "D3D3D3",
"lightgreen": "90EE90",
"lightpink": "FFB6C1",
"lightsalmon": "FFA07A",
"lightseagreen": "20B2AA",
"lightskyBlue": "87CEFA",
"lightslategray": "778899",
"lightslategrey": "778899",
"lightsteelBlue": "B0C4DE",
"lightyellow": "FFFFE0",
"lime": "00FF00",
"limegreen": "32CD32",
"linen": "FAF0E6",
"magenta": "FF00FF",
"maroon": "800000",
"mediumaquamarine": "66CDAA",
"mediumblue": "0000CD",
"mediumorchid": "BA55D3",
"mediumpurple": "9370DB",
"mediumseagreen": "3CB371",
"mediumslateblue": "7B68EE",
"mediumspringgreen": "00FA9A",
"mediumturquoise": "48D1CC",
"mediumvioletred": "C71585",
"midnightblue": "191970",
"mintcream": "F5FFFA",
"mistyrose": "FFE4E1",
"moccasin": "FFE4B5",
"navajowhite": "FFDEAD",
"navy": "000080",
"oldlace": "FDF5E6",
"olive": "808000",
"olivedrab": "6B8E23",
"orange": "FFA500",
"orangered": "FF4500",
"orchid": "DA70D6",
"palegoldenrod": "EEE8AA",
"palegreen": "98FB98",
"paleturquoise": "AFEEEE",
"palevioletred": "DB7093",
"papayawhip": "FFEFD5",
"peachpuff": "FFDAB9",
"peru": "CD853F",
"pink": "FFC0CB",
"plum": "DDA0DD",
"powderblue": "B0E0E6",
"purple": "800080",
"rebeccapurple": "663399",
"red": "FF0000",
"rosybrown": "BC8F8F",
"royalblue": "4169E1",
"saddlebrown": "8B4513",
"salmon": "FA8072",
"sandybrown": "F4A460",
"seagreen": "2E8B57",
"seashell": "FFF5EE",
"sienna": "A0522D",
"silver": "C0C0C0",
"skyblue": "87CEEB",
"slateblue": "6A5ACD",
"slategray": "708090",
"slategrey": "708090",
"snow": "FFFAFA",
"springgreen": "00FF7F",
"steelblue": "4682B4",
"tan": "D2B48C",
"teal": "008080",
"thistle": "D8BFD8",
"tomato": "FF6347",
"turquoise": "40E0D0",
"violet": "EE82EE",
"wheat": "F5DEB3",
"white": "FFFFFF",
"whitesmoke": "F5F5F5",
"yellow": "FFFF00",
"yellowgreen": "9ACD32",
}