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Allow parameter values (AVOptions) to use the 'k', 'M', 'G' 

and 'B' postfixes.

Originally committed as revision 6249 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Panagiotis Issaris 2006-09-14 11:23:41 +00:00
parent 7f889a76ad
commit a41e9d6899
1 changed files with 29 additions and 2 deletions
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31
libavcodec/opt.c
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@ -27,11 +27,38 @@
#include "avcodec.h"
#include "opt.h"
static double av_parse_num(const char *name, char **tail){
/**
* strtod() function extended with 'k', 'M' and 'B' postfixes.
* This allows using kB, MB, k, M and B as a postfix. This function
* assumes that the unit of numbers is bits not bytes.
*/
static double av_strtod(const char *name, char **tail) {
double d;
d= strtod(name, tail);
if(*tail>name && (**tail=='k')) {
d*=1000;
(*tail)++;
}
else if(*tail && (**tail=='M')) {
d*=1000000;
(*tail)++;
}
else if(*tail && (**tail=='G')) {
d*=1000000000;
(*tail)++;
}
if(*tail && (**tail=='B')) {
d*=8;
(*tail)++;
}
return d;
}
static double av_parse_num(const char *name, char **tail){
double d;
d= av_strtod(name, tail);
if(*tail>name && (**tail=='/' || **tail==':'))
d/=strtod((*tail)+1, tail);
d/=av_strtod((*tail)+1, tail);
return d;
}