lavc/htmlsubtitles: handle colors starting with many '#'

libavcodec/htmlsubtitles.c

@@ -28,6 +28,10 @@
 static int html_color_parse(void *log_ctx, const char *str)
 {
     uint8_t rgba[4];
+    int nb_sharps = 0;
+    while (str[nb_sharps] == '#')
+        nb_sharps++;
+    str += FFMAX(0, nb_sharps - 1);
     if (av_parse_color(rgba, str, strcspn(str, "\" >"), log_ctx) < 0)
         return -1;
     return rgba[0] | rgba[1] << 8 | rgba[2] << 16;

tests/ref/fate/sub-srt-badsyntax

@@ -15,7 +15,7 @@ Dialogue: 0,0:01:10.00,0:01:14.50,Default,,0,0,0,,>>> RebelSubTeam <<<
 Dialogue: 0,0:02:37.75,0:02:43.70,Default,,0,0,0,,{\b1}~ASUKO MARCH!~\N>>:<<\Ntranslation by: cangii\NRetiming by: furransu{\b0}
 Dialogue: 0,0:03:38.32,0:03:42.78,Default,,0,0,0,,<<THE HIGH ROLLERS>>\N<<Grandes Jogadores>>
 Dialogue: 0,0:04:50.43,0:05:01.03,Default,,0,0,0,,<<flash gordon\Npisode 4\Nsaison 1>\Nwww.SeriesSub.com>
-Dialogue: 0,0:20:31.85,0:20:56.84,Default,,0,0,0,,\N<<<<www.egfire.com>>>>
+Dialogue: 0,0:20:31.85,0:20:56.84,Default,,0,0,0,,{\c&HFFFF&}\N<<<<www.egfire.com>>>>{\c}
 Dialogue: 0,0:37:59.69,0:38:01.59,Default,,0,0,0,,mint asztalt foglaltatni\Na <<>Le Cirque-ben.
 Dialogue: 0,0:53:43.78,0:53:45.94,Default,,0,0,0,,<<That's OK, >> - he calmed himself.
 Dialogue: 0,0:53:46.22,0:53:49.09,Default,,0,0,0,,<<lt's not a long way to the hotel,\Nthe hotel is within easy reach.