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Code Issues Releases Activity

libavfilter: add ff_parse_time_base()

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-05-17 02:37:13 +02:00
parent 6579bc439b
commit 3448404a70
2 changed files with 22 additions and 0 deletions
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12
libavfilter/formats.c
View File

@ -21,6 +21,7 @@
#include "libavutil/eval.h"
#include "libavutil/pixdesc.h"
#include "libavutil/parseutils.h"
#include "libavutil/audioconvert.h"
#include "avfilter.h"
#include "internal.h"
@ -493,6 +494,17 @@ int ff_parse_sample_format(int *ret, const char *arg, void *log_ctx)
return 0;
}
int ff_parse_time_base(AVRational *ret, const char *arg, void *log_ctx)
{
AVRational r;
if(av_parse_ratio(&r, arg, INT_MAX, 0, log_ctx) < 0 ||r.num<=0 ||r.den<=0) {
av_log(log_ctx, AV_LOG_ERROR, "Invalid time base '%s'\n", arg);
return AVERROR(EINVAL);
}
*ret = r;
return 0;
}
int ff_parse_sample_rate(int *ret, const char *arg, void *log_ctx)
{
char *tail;

10
libavfilter/internal.h
View File

@ -111,6 +111,16 @@ int ff_parse_pixel_format(enum PixelFormat *ret, const char *arg, void *log_ctx)
*/
int ff_parse_sample_rate(int *ret, const char *arg, void *log_ctx);
/**
* Parse a time base.
*
* @param ret unsigned AVRational pointer to where the value should be written
* @param arg string to parse
* @param log_ctx log context
* @return 0 in case of success, a negative AVERROR code on error
*/
int ff_parse_time_base(AVRational *ret, const char *arg, void *log_ctx);
/**
* Parse a sample format name or a corresponding integer representation.
*