From: Limin Wang <lance.lmw...@gmail.com>
Signed-off-by: Limin Wang <lance.lmw...@gmail.com>
---
libavfilter/vf_showinfo.c | 40 +++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/libavfilter/vf_showinfo.c b/libavfilter/vf_showinfo.c
index 31f6b32aa4..77ee7f312c 100644
--- a/libavfilter/vf_showinfo.c
+++ b/libavfilter/vf_showinfo.c
@@ -169,6 +169,43 @@ static void dump_content_light_metadata(AVFilterContext
*ctx, AVFrameSideData *s
metadata->MaxCLL, metadata->MaxFALL);
}
+static int is_ascii(uint8_t ch)
+{
+ if (ch >= 32 && ch <= 127)
+ return 1;
+ else
+ return 0;
+}
+
+static void dump_user_data_unregistered_metadata(AVFilterContext *ctx,
AVFrameSideData *sd)
+{
+ const int uuid_size = 16;
+ uint8_t *user_data = sd->data;
+
+ if (sd->size < uuid_size) {
+ av_log(ctx, AV_LOG_ERROR, "invalid data(%d < UUID(%d-bytes))",
sd->size, uuid_size);
+ return;
+ }
+
+ av_log(ctx, AV_LOG_INFO, "User Data Unregistered:\n");
+ av_log(ctx, AV_LOG_INFO, "UUID=");
+ for (int i = 0; i < uuid_size; i++)
+ av_log(ctx, AV_LOG_INFO, "%x", user_data[i]);
+ av_log(ctx, AV_LOG_INFO, "\n");
+ av_log(ctx, AV_LOG_INFO, "User Data=");
+ for (int i = uuid_size; i < sd->size; i++) {
+ /* printable ascii */
+ if (is_ascii(*(user_data + i))) {
+ av_log(ctx, AV_LOG_INFO, "%c", *(user_data + i));
+ } else {
+ /* don't print the last byte `\0` character for ascii */
+ if ((i == sd->size - 1) && *(user_data + i) == 0)
+ continue;
+ av_log(ctx, AV_LOG_INFO, "%x", *(user_data + i));
+ }
+ }
+}
+
static void dump_color_property(AVFilterContext *ctx, AVFrame *frame)
{
const char *color_range_str = av_color_range_name(frame->color_range);
@@ -319,6 +356,9 @@ static int filter_frame(AVFilterLink *inlink, AVFrame
*frame)
av_log(ctx, AV_LOG_INFO, "GOP timecode - %s", tcbuf);
break;
}
+ case AV_FRAME_DATA_USER_DATA_UNREGISTERED:
+ dump_user_data_unregistered_metadata(ctx, sd);
+ break;
default:
av_log(ctx, AV_LOG_WARNING, "unknown side data type %d (%d bytes)",
sd->type, sd->size);
--
2.21.0
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