[FFmpeg-cvslog] cmdutils: slightly better -filters output.

[Clément Bœsch]

ffmpeg | branch: master | Clément Bœsch <ubitux at gmail.com> | Wed Apr 17 11:31:49 2013 +0200| [a5ebd2d987c321e2907b560ac902b345fe5f5aad] | committer: Clément Bœsch

cmdutils: slightly better -filters output.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a5ebd2d987c321e2907b560ac902b345fe5f5aad
---

 cmdutils.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/cmdutils.c b/cmdutils.c
index 2b5ba33..3536574 100644
--- a/cmdutils.c
+++ b/cmdutils.c
@@ -1453,7 +1453,11 @@ int show_filters(void *optctx, const char *opt, const char *arg)
     int i, j;
     const AVFilterPad *pad;
 
-    printf("Filters:\n");
+    printf("Filters:\n"
+           "  A = Audio input/output\n"
+           "  V = Video input/output\n"
+           "  N = Dynamic number and/or type of input/output\n"
+           "  | = Source or sink filter\n");
 #if CONFIG_AVFILTER
     while ((filter = avfilter_next(filter))) {
         descr_cur = descr;
@@ -1469,7 +1473,8 @@ int show_filters(void *optctx, const char *opt, const char *arg)
                 *(descr_cur++) = get_media_type_char(pad[j].type);
             }
             if (!j)
-                *(descr_cur++) = '|';
+                *(descr_cur++) = ((!i && (filter->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)) ||
+                                  ( i && (filter->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS))) ? 'N' : '|';
         }
         *descr_cur = 0;
         printf("%-16s %-10s %s\n", filter->name, descr, filter->description);