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avfilter/avfilter: Add avfilter_filter_pad_count() 

It is intended as replacement for avfilter_pad_count(). In contrast to
the latter, it avoids a loop.

Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-08-15 07:32:05 +02:00
parent 8be701d9f7
commit 7c5f998196
4 changed files with 14 additions and 1 deletions
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3
doc/APIchanges
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@ -14,6 +14,9 @@ libavutil: 2021-04-27
API changes, most recent first: API changes, most recent first:
2021-08-20 - xxxxxxxxxx - lavfi 8.3.100 - avfilter.H
Add avfilter_filter_pad_count() as a replacement for avfilter_pad_count().
2021-08-17 - xxxxxxxxxx - lavu 57.4.101 - opt.h 2021-08-17 - xxxxxxxxxx - lavu 57.4.101 - opt.h
av_opt_copy() now guarantees that allocated src and dst options av_opt_copy() now guarantees that allocated src and dst options
don't alias each other even on error. don't alias each other even on error.

5
libavfilter/avfilter.c
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@ -556,6 +556,11 @@ int avfilter_pad_count(const AVFilterPad *pads)
av_assert0(!"AVFilterPad list not from a filter"); av_assert0(!"AVFilterPad list not from a filter");
} }
unsigned avfilter_filter_pad_count(const AVFilter *filter, int is_output)
{
return is_output ? filter->nb_outputs : filter->nb_inputs;
}
static const char *default_filter_name(void *filter_ctx) static const char *default_filter_name(void *filter_ctx)
{ {
AVFilterContext *ctx = filter_ctx; AVFilterContext *ctx = filter_ctx;

5
libavfilter/avfilter.h
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@ -325,6 +325,11 @@ typedef struct AVFilter {
int (*activate)(AVFilterContext *ctx); int (*activate)(AVFilterContext *ctx);
} AVFilter; } AVFilter;
/**
* Get the number of elements in an AVFilter's inputs or outputs array.
*/
unsigned avfilter_filter_pad_count(const AVFilter *filter, int is_output);
/** /**
* Process multiple parts of the frame concurrently. * Process multiple parts of the frame concurrently.
*/ */

2
libavfilter/version.h
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@ -30,7 +30,7 @@
#include "libavutil/version.h" #include "libavutil/version.h"
#define LIBAVFILTER_VERSION_MAJOR 8 #define LIBAVFILTER_VERSION_MAJOR 8
#define LIBAVFILTER_VERSION_MINOR 2 #define LIBAVFILTER_VERSION_MINOR 3
#define LIBAVFILTER_VERSION_MICRO 100 #define LIBAVFILTER_VERSION_MICRO 100