avfilter/af_silenceremove: add timestamp option

Paul B Mahol committed 3 years ago

Commit 62d41101 parent b95d1232 files · +27 −2Browse files

Unified · Split

2 files

doc/filters.texi +10 −0
libavfilter/af_silenceremove.c +17 −2

@@ -6485,6 +6485,16 @@ In that case it may be needed to also set @option{start_silence} and/or · 6484 unmodified lines
6485	@option{stop_silence} to nonzero values with also @option{start_duration} and/or	6485	@option{stop_silence} to nonzero values with also @option{start_duration} and/or
6486	@option{stop_duration} to nonzero values.	6486	@option{stop_duration} to nonzero values.
6487	Default value is @code{0.02}. Allowed range is from @code{0} to @code{10}.	6487	Default value is @code{0.02}. Allowed range is from @code{0} to @code{10}.
		6488
		6489	@item timestamp
		6490	Set processing mode of every audio frame output timestamp.
		6491	@table @option
		6492	@item write
		6493	Full timestamps rewrite, keep only the start time for the first output frame.
		6494	@item copy
		6495	Non-dropped frames are left with same timestamp as input audio frame.
		6496	@end table
		6497	Defaults value is @code{write}.
6488	@end table	6498	@end table
6489		6499
6490	@subsection Examples	6500	@subsection Examples

libavfilter/af_silenceremove.c+17−2

     D_NB
 };
+enum TimestampMode {
+    TS_WRITE,
+    TS_COPY,
+    TS_NB
+};
 enum ThresholdMode {
     T_ANY,
     T_ALL,
     int64_t window_duration_opt;
+    int timestamp_mode;
     int start_found_periods;
     int stop_found_periods;
     {   "median",        "use median of absolute values of samples",           0,                           AV_OPT_TYPE_CONST,    {.i64=D_MEDIAN},0,       0, AF, "detection" },
     {   "ptp",           "use absolute of max peak to min peak difference",    0,                           AV_OPT_TYPE_CONST,    {.i64=D_PTP}, 0,         0, AF, "detection" },
     { "window",          "set duration of window for silence detection",       OFFSET(window_duration_opt), AV_OPT_TYPE_DURATION, {.i64=20000}, 0, 100000000, AF },
+    { "timestamp",       "set how every output frame timestamp is processed",  OFFSET(timestamp_mode),      AV_OPT_TYPE_INT,      {.i64=TS_WRITE}, 0, TS_NB-1, AF, "timestamp" },
+    {   "write",         "full timestamps rewrite, keep only the start time",  0,                           AV_OPT_TYPE_CONST,    {.i64=TS_WRITE}, 0,       0, AF, "timestamp" },
+    {   "copy",          "non-dropped frames are left with same timestamp",    0,                           AV_OPT_TYPE_CONST,    {.i64=TS_COPY},  0,       0, AF, "timestamp" },
     { NULL }
 };
         return AVERROR(ENOMEM);
     }
-    out->pts = s->next_pts;
+    if (s->timestamp_mode == TS_WRITE)
+        out->pts = s->next_pts;
+    else
+        out->pts = in->pts;
     switch (outlink->format) {
     case AV_SAMPLE_FMT_FLT:
     if (ret > 0) {
         if (s->start_periods == 1 && s->stop_periods == 0 &&
             s->start_found_periods < 0) {
-            in->pts = s->next_pts;
+            if (s->timestamp_mode == TS_WRITE)
+                in->pts = s->next_pts;
             s->next_pts += in->nb_samples;
             return ff_filter_frame(outlink, in);
         }

avfilter/af_silenceremove: add timestamp option

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