h264/h265parse: Add VideoTimeCodeMeta to the outgoing buffer

The parsers attempted to add the meta to the incoming buffer, which
might not be the outgoing buffer or may not have been writable yet.

To fix this, call `gst_buffer_make_writable` earlier and make sure to
use the `parse_buffer` to add the meta.

Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/issues/1521

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2002>

2 files changed, 17 insertions, 17 deletions

diff --git a/gst/videoparsers/gsth264parse.c b/gst/videoparsers/gsth264parse.c
index d5f2816e5..a7808b4de 100644
--- a/gst/videoparsers/gsth264parse.c
+++ b/gst/videoparsers/gsth264parse.c
@@ -3134,7 +3134,14 @@ gst_h264_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
   }
 #endif
 
-  if (!gst_buffer_get_video_time_code_meta (buffer)) {
+  if (frame->out_buffer) {
+    parse_buffer = frame->out_buffer =
+        gst_buffer_make_writable (frame->out_buffer);
+  } else {
+    parse_buffer = frame->buffer = gst_buffer_make_writable (frame->buffer);
+  }
+
+  if (!gst_buffer_get_video_time_code_meta (parse_buffer)) {
     guint i = 0;
 
     for (i = 0; i < 3 && h264parse->num_clock_timestamp; i++) {
@@ -3197,7 +3204,7 @@ gst_h264_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
           "Add time code meta %02u:%02u:%02u:%02u",
           tim->hours_value, tim->minutes_value, tim->seconds_value, n_frames);
 
-      gst_buffer_add_video_time_code_meta_full (buffer,
+      gst_buffer_add_video_time_code_meta_full (parse_buffer,
           h264parse->parsed_fps_n,
           h264parse->parsed_fps_d,
           NULL,
@@ -3210,13 +3217,6 @@ gst_h264_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
     h264parse->num_clock_timestamp = 0;
   }
 
-  if (frame->out_buffer) {
-    parse_buffer = frame->out_buffer =
-        gst_buffer_make_writable (frame->out_buffer);
-  } else {
-    parse_buffer = frame->buffer = gst_buffer_make_writable (frame->buffer);
-  }
-
   if (is_interlaced) {
     GST_BUFFER_FLAG_SET (parse_buffer, GST_VIDEO_BUFFER_FLAG_INTERLACED);
     if (h264parse->sei_pic_struct == GST_H264_SEI_PIC_STRUCT_TOP_FIELD)
diff --git a/gst/videoparsers/gsth265parse.c b/gst/videoparsers/gsth265parse.c
index e94f86d24..774783646 100644
--- a/gst/videoparsers/gsth265parse.c
+++ b/gst/videoparsers/gsth265parse.c
@@ -2748,6 +2748,13 @@ gst_h265_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
     }
   }
 
+  if (frame->out_buffer) {
+    parse_buffer = frame->out_buffer =
+        gst_buffer_make_writable (frame->out_buffer);
+  } else {
+    parse_buffer = frame->buffer = gst_buffer_make_writable (frame->buffer);
+  }
+
   {
     guint i = 0;
 
@@ -2809,7 +2816,7 @@ gst_h265_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
           gst_util_uint64_scale_int (h265parse->time_code.n_frames[i], 1,
           2 - h265parse->time_code.units_field_based_flag[i]);
 
-      gst_buffer_add_video_time_code_meta_full (buffer,
+      gst_buffer_add_video_time_code_meta_full (parse_buffer,
           h265parse->parsed_fps_n,
           h265parse->parsed_fps_d,
           NULL,
@@ -2823,13 +2830,6 @@ gst_h265_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
     }
   }
 
-  if (frame->out_buffer) {
-    parse_buffer = frame->out_buffer =
-        gst_buffer_make_writable (frame->out_buffer);
-  } else {
-    parse_buffer = frame->buffer = gst_buffer_make_writable (frame->buffer);
-  }
-
   if (h265parse->sei_pic_struct != GST_H265_SEI_PIC_STRUCT_FRAME) {
     GST_BUFFER_FLAG_SET (parse_buffer, GST_VIDEO_BUFFER_FLAG_INTERLACED);
     if (h265parse->sei_pic_struct == GST_H265_SEI_PIC_STRUCT_TOP_FIELD)