[FFmpeg-devel] [PATCH 3/3] avcodec/pngenc: write eXIf chunks

[Leo Izen]

Write EXIF metadata exposed AV_FRAME_DATA_EXIF as an eXIf chunk
to PNG files, if present.

Signed-off-by: Leo Izen <leo.izen at gmail.com>
---
 libavcodec/pngenc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavcodec/pngenc.c b/libavcodec/pngenc.c
index 50689cb50c..a302c879da 100644
--- a/libavcodec/pngenc.c
+++ b/libavcodec/pngenc.c
@@ -413,6 +413,10 @@ static int encode_headers(AVCodecContext *avctx, const AVFrame *pict)
         }
     }
 
+    side_data = av_frame_get_side_data(pict, AV_FRAME_DATA_EXIF);
+    if (side_data)
+        png_write_chunk(&s->bytestream, MKTAG('e', 'X', 'I', 'f'), side_data->data, FFMIN(side_data->size, INT_MAX));
+
     side_data = av_frame_get_side_data(pict, AV_FRAME_DATA_ICC_PROFILE);
     if ((ret = png_write_iccp(s, side_data)))
         return ret;
-- 
2.43.0