avcodec/h264_slice: add timecode metadata

Please test with below command:
./ffplay -vf drawtext="fontfile=/Library/Fonts/Arial.ttf:text=\\'%{metadata\\:timecode}\\'" \
                       ../fate-suite/h264/crew_cif_timecode-2.h264

Signed-off-by: Limin Wang <lance.lmwang@gmail.com>

diff --git a/libavcodec/h264_slice.c b/libavcodec/h264_slice.c
index 725390e1a30804e9f136330c4ae12e2f8d46d063..c7b2764270599857a4d022825cb03b5195cc29b1 100644 (file)
--- a/libavcodec/h264_slice.c
+++ b/libavcodec/h264_slice.c
@@ -1306,6 +1306,7 @@ static int h264_export_frame_props(H264Context *h)
 
     if (h->sei.picture_timing.timecode_cnt > 0) {
         uint32_t *tc_sd;
+        char tcbuf[AV_TIMECODE_STR_SIZE];
 
         AVFrameSideData *tcside = av_frame_new_side_data(out,
                                                          AV_FRAME_DATA_S12M_TIMECODE,
@@ -1324,6 +1325,8 @@ static int h264_export_frame_props(H264Context *h)
             int   ff = h->sei.picture_timing.timecode[i].frame;
 
             tc_sd[i + 1] = av_timecode_get_smpte(h->avctx->framerate, drop, hh, mm, ss, ff);
+            av_timecode_make_smpte_tc_string(tcbuf, tc_sd[i + 1], 0);
+            av_dict_set(&out->metadata, "timecode", tcbuf, 0);
         }
         h->sei.picture_timing.timecode_cnt = 0;
     }