lavf: make cmdutils's check_stream_specifier public.

The new function is called avformat_match_stream_specifier()
and does not include logging the error message.

1 files changed, 4 insertions, 56 deletions

diff --git a/cmdutils.c b/cmdutils.c
index 5fdb1a6ba2..295d95608e 100644
--- a/cmdutils.c
+++ b/cmdutils.c
@@ -1088,62 +1088,10 @@ FILE *get_preset_file(char *filename, size_t filename_size,
 
 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
 {
-    if (*spec <= '9' && *spec >= '0') /* opt:index */
-        return strtol(spec, NULL, 0) == st->index;
-    else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
-             *spec == 't') { /* opt:[vasdt] */
-        enum AVMediaType type;
-
-        switch (*spec++) {
-        case 'v': type = AVMEDIA_TYPE_VIDEO;      break;
-        case 'a': type = AVMEDIA_TYPE_AUDIO;      break;
-        case 's': type = AVMEDIA_TYPE_SUBTITLE;   break;
-        case 'd': type = AVMEDIA_TYPE_DATA;       break;
-        case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
-        default:  av_assert0(0);
-        }
-        if (type != st->codec->codec_type)
-            return 0;
-        if (*spec++ == ':') { /* possibly followed by :index */
-            int i, index = strtol(spec, NULL, 0);
-            for (i = 0; i < s->nb_streams; i++)
-                if (s->streams[i]->codec->codec_type == type && index-- == 0)
-                   return i == st->index;
-            return 0;
-        }
-        return 1;
-    } else if (*spec == 'p' && *(spec + 1) == ':') {
-        int prog_id, i, j;
-        char *endptr;
-        spec += 2;
-        prog_id = strtol(spec, &endptr, 0);
-        for (i = 0; i < s->nb_programs; i++) {
-            if (s->programs[i]->id != prog_id)
-                continue;
-
-            if (*endptr++ == ':') {
-                int stream_idx = strtol(endptr, NULL, 0);
-                return stream_idx >= 0 &&
-                    stream_idx < s->programs[i]->nb_stream_indexes &&
-                    st->index == s->programs[i]->stream_index[stream_idx];
-            }
-
-            for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
-                if (st->index == s->programs[i]->stream_index[j])
-                    return 1;
-        }
-        return 0;
-    } else if (*spec == '#') {
-        int sid;
-        char *endptr;
-        sid = strtol(spec + 1, &endptr, 0);
-        if (!*endptr)
-            return st->id == sid;
-    } else if (!*spec) /* empty specifier, matches everything */
-        return 1;
-
-    av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
-    return AVERROR(EINVAL);
+    int ret = avformat_match_stream_specifier(s, st, spec);
+    if (ret < 0)
+        av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
+    return ret;
 }
 
 AVDictionary *filter_codec_opts(AVDictionary *opts, enum CodecID codec_id,