diff --git a/convert.py b/convert.py index 7aca929..1848ff4 100755 --- a/convert.py +++ b/convert.py @@ -1,16 +1,85 @@ #!/usr/bin/env python3 import argparse +import colorsys import logging +import math import sys import xml.dom.minidom -def ProcessComments(comments, f, width, height, bottomReserved, fontface, fontsize, reduced): - rows = [None]*(height-bottomReserved) +def ProcessComments(comments, f, width, height, bottomReserved, fontface, fontsize, lifetime, reduced): + WriteASSHead(f, width, height, fontface, fontsize) + rows = [[None]*(height-bottomReserved), [None]*(height-bottomReserved), [None]*(height-bottomReserved)] + for i in comments: + row = 0 + rowmax = height-bottomReserved-i[7] + while row < rowmax: + freerows = TestFreeRows(rows, i, row, width, height, bottomReserved, lifetime) + if freerows >= i[7]: + MarkCommentRow(rows, i, row) + WriteComment(f, i, row, width, height, bottomReserved, fontsize, lifetime) + break + else: + row += freerows or 1 + else: + if not reduced: + row = FindAlternativeRow(rows, i, height, bottomReserved) + MarkCommentRow(rows, i, row) + WriteComment(f, i, row, width, height, bottomReserved, fontsize, lifetime) + + +def TestFreeRows(rows, c, row, width, height, bottomReserved, lifetime): + res = 0 + rowmax = height-bottomReserved-c[7] + while row < rowmax and res < c[7]: + if c[4] in (1, 2): + if rows[c[4]][row] and rows[c[4]][row][0]+lifetime > c[0]: + break + else: + if rows[c[4]][row] and rows[c[4]][row][0]+lifetime*c[8]/width > c[0]: + break + row += 1 + res += 1 + return res + + +def FindAlternativeRow(rows, c, height, bottomReserved): + res = 0 + for row in range(height-bottomReserved-math.ceil(c[7])): + if not rows[c[4]][row]: + return row + elif rows[c[4]][row][1] < rows[c[4]][res][1]: + res = row + return res + + +def MarkCommentRow(rows, c, row): + for i in range(row, row+math.ceil(c[7])): + rows[c[4]][i] = c + + +def WriteComment(f, c, row, width, height, bottomReserved, fontsize, lifetime): + text = c[3].replace('\\', '\\\\').replace('\n', '\\n') + if c[4] == 1: + styles = '{\\a2}{\\pos(%(halfwidth)s, %(row)s)}' % {'halfwidth': round(width/2), 'row': row} + elif c[4] == 2: + styles = '{\\a6}{\\pos(%(halfwidth)s, %(row)s)}' % {'halfwidth': round(width/2), 'row': ConvertType2(row, height, bottomReserved)} + else: + styles = '{\\a1}{\\move(%(width)s, %(row)s, %(neglen)s, %(row)s)}' % {'width': width, 'row': row, 'neglen': -math.ceil(c[8])} + if -1 < c[6]-fontsize < 1: + styles += '{\\fs%s}' % round(c[6]) + if c[5] != 0xffffff: + styles += '{\\c&H%02X%02X%02x&}' % (c[5]&0xff, (c[5]>>8)&0xff, (c[5]>>16)&0xff) + if c[5] == 0x000000: + styles += '{\\3c&HFFFFFF&}' + else: + styles += '{\\bord0}' + f.write('Dialogue: 3,%(start)s,%(end)s,Default,,0000,0000,0000,,%(styles)s%(text)s\n' % {'start': ConvertTimestamp(c[0]), 'end': ConvertTimestamp(c[0]+lifetime), 'styles': styles, 'text': text}) + def ReadCommentsBilibili(f, fontsize): - 'Output format: [(timeline, timestamp, no, comment, type, color, size, height)]' + 'Output format: [(timeline, timestamp, no, comment, type, color, size, height, width)]' dom = xml.dom.minidom.parse(f) comment_element = dom.getElementsByTagName('d') i = 0 @@ -20,19 +89,59 @@ def ReadCommentsBilibili(f, fontsize): assert len(p) >= 8 assert p[1] in ('1', '4', '5') c = str(comment.childNodes[0].wholeText).replace('/n', '\\n') - yield (float(p[0]), int(p[4]), i, c, {'1': 0, '4': 2, '5': 1}[p[1]], int(p[3]), int(p[2])/25.0, (c.count('\\n')+1)*int(p[2])/25.0) + size = int(p[2])*fontsize/25.0 + yield (float(p[0]), int(p[4]), i, c, {'1': 0, '4': 2, '5': 1}[p[1]], int(p[3]), size, (c.count('\\n')+1)*size, CalculateLength(c)*size) i += 1 except (AssertionError, AttributeError, IndexError, TypeError, ValueError): logging.warning('Invalid comment: %s' % comment.toxml()) continue +def ConvertTimestamp(timestamp): + hour, minute = divmod(timestamp, 3600) + minute, second = divmod(minute, 60) + centsecond = int(second*100.0) + return '%d:%02d:%02d.%02d' % (int(hour), int(minute), int(second), centsecond) + + +def WriteASSHead(f, width, height, fontface, fontsize): + f.write( +'''[Script Info] +ScriptType: v4.00+ +Collisions: Normal +PlayResX: %(width)s +PlayResY: %(height)s + +[V4+ Styles] +Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding +Style: Default, %(fontface)s, %(fontsize)s, &H00FFFFFF, &H00FFFFFF, &H00000000, &H00000000, 0, 0, 0, 0, 100, 100, 0.00, 0.00, 1, 1, 0, 2, 20, 20, 20, 0 + +[Events] +Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text +''' % {'width': width, 'height': height, 'fontface': fontface, 'fontsize': fontsize} + ) + + +def NeedWhiteBorder(rgb): + h, l, s = colorsys.rgb_to_hls(((rgb>>16)&0xff)/255, ((rgb>>8)&0xff)/255, (rgb&0xff)/255) + return (1/12 < h < 7/12 and l < 1/3) or l < 5/12 + + +def CalculateLength(s): + return max(map(len, s.split('\\n'))) + + +def ConvertType2(row, height, bottomReserved): + return height-bottomReserved-row + + if __name__ == '__main__': parser = argparse.ArgumentParser() parser.add_argument('-o', '--output', metavar='OUTPUT', help='Output file') parser.add_argument('-s', '--size', metavar='WIDTHxHEIGHT', required=True, help='Stage size in pixels') parser.add_argument('-fn', '--font', metavar='FONT', help='Specify font face', default='黑体') parser.add_argument('-fs', '--fontsize', metavar='SIZE', help='Default font size', type=float, default=25.0) + parser.add_argument('-l', '--lifetime', metavar='SECONDS', help='Duration of comment display', type=float, default=5.0) parser.add_argument('-p', '--protect', metavar='HEIGHT', help='Reserve blank on the bottom of the stage', type=int, default=0) parser.add_argument('-r', '--reduce', action='store_true', help='Reduce the amount of danmakus if stage is full') parser.add_argument('file', metavar='FILE', nargs='+', help='Comment file to be processed') @@ -53,6 +162,6 @@ if __name__ == '__main__': else: fo = sys.stdout comments.sort() - ProcessComments(comments, fo, width, height, args.protect, args.font, args.fontsize, args.reduce) + ProcessComments(comments, fo, width, height, args.protect, args.font, args.fontsize, args.lifetime, args.reduce) if args.output: fo.close()