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* Extend the syntax of a filename for the img reader to allow looping. Thus 

%125*d means substitute the frame number MOD 125 into the filename. This
  is a cheap method of having an infinite stream.

Originally committed as revision 1332 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Philip Gladstone 2002-12-11 03:20:05 +00:00
parent 38758ab0cd
commit c9646fda01
1 changed files with 14 additions and 5 deletions
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19
libavformat/utils.c
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@ -1089,11 +1089,20 @@ int get_frame_filename(char *buf, int buf_size,
if (c == '\0')
break;
if (c == '%') {
nd = 0;
while (*p >= '0' && *p <= '9') {
nd = nd * 10 + *p++ - '0';
}
c = *p++;
do {
nd = 0;
while (isdigit(*p)) {
nd = nd * 10 + *p++ - '0';
}
c = *p++;
if (c == '*' && nd > 0) {
// The nd field is actually the modulus
number = number % nd;
c = *p++;
nd = 0;
}
} while (isdigit(c));
switch(c) {
case '%':
goto addchar;