[FFmpeg-cvslog] avcodec/pngenc: fix mDCv typo

[Leo Izen]

ffmpeg | branch: release/7.0 | Leo Izen <leo.izen at gmail.com> | Tue Jul  2 09:39:01 2024 -0400| [89a85efbf1f708e8eb9170d89ec49c065a066cee] | committer: Leo Izen

avcodec/pngenc: fix mDCv typo

When mDCv support was added, there was a typo in both variable names
and also the MKTAG itself, incorrectly listing it as mDVc. The tag name
stands for Mastering Display Color Volume so mDCv is correct.

Typo originally introduced in 78949041417caaef0c82b2b23d7defdd88aa2378.

Signed-off-by: Leo Izen <leo.izen at gmail.com>
Reported-by: Ramiro Polla <ramiro.polla at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=89a85efbf1f708e8eb9170d89ec49c065a066cee
---

 libavcodec/pngenc.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/libavcodec/pngenc.c b/libavcodec/pngenc.c
index 28d645ea48..e4c6bdc563 100644
--- a/libavcodec/pngenc.c
+++ b/libavcodec/pngenc.c
@@ -449,17 +449,17 @@ static int encode_headers(AVCodecContext *avctx, const AVFrame *pict)
 
     side_data = av_frame_get_side_data(pict, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);
     if (side_data) {
-        AVMasteringDisplayMetadata *mdvc = (AVMasteringDisplayMetadata *) side_data->data;
-        if (mdvc->has_luminance && mdvc->has_primaries) {
+        AVMasteringDisplayMetadata *mdcv = (AVMasteringDisplayMetadata *) side_data->data;
+        if (mdcv->has_luminance && mdcv->has_primaries) {
             for (int i = 0; i < 3; i++) {
-                AV_WB16(s->buf + 2*i, PNG_Q2D(mdvc->display_primaries[i][0], 50000));
-                AV_WB16(s->buf + 2*i + 2, PNG_Q2D(mdvc->display_primaries[i][1], 50000));
+                AV_WB16(s->buf + 2*i, PNG_Q2D(mdcv->display_primaries[i][0], 50000));
+                AV_WB16(s->buf + 2*i + 2, PNG_Q2D(mdcv->display_primaries[i][1], 50000));
             }
-            AV_WB16(s->buf + 12, PNG_Q2D(mdvc->white_point[0], 50000));
-            AV_WB16(s->buf + 14, PNG_Q2D(mdvc->white_point[1], 50000));
-            AV_WB32(s->buf + 16, PNG_Q2D(mdvc->max_luminance, 10000));
-            AV_WB32(s->buf + 20, PNG_Q2D(mdvc->min_luminance, 10000));
-            png_write_chunk(&s->bytestream, MKTAG('m', 'D', 'V', 'c'), s->buf, 24);
+            AV_WB16(s->buf + 12, PNG_Q2D(mdcv->white_point[0], 50000));
+            AV_WB16(s->buf + 14, PNG_Q2D(mdcv->white_point[1], 50000));
+            AV_WB32(s->buf + 16, PNG_Q2D(mdcv->max_luminance, 10000));
+            AV_WB32(s->buf + 20, PNG_Q2D(mdcv->min_luminance, 10000));
+            png_write_chunk(&s->bytestream, MKTAG('m', 'D', 'C', 'v'), s->buf, 24);
         }
     }