[FFmpeg-cvslog] lavc/libopenh264enc: prompt slice number changing inside libopenh264

[Linjie Fu]

ffmpeg | branch: master | Linjie Fu <linjie.fu at intel.com> | Wed Apr 29 11:00:49 2020 +0800| [9310361252c88bcab74a7ccbe2c910c7a1a37397] | committer: Martin Storsjö

lavc/libopenh264enc: prompt slice number changing inside libopenh264

Libopenh264enc would set the slice according to the number of cpu cores
if uiSliceNum equals to 0 (auto) in SM_FIXEDSLCNUM_SLICE mode.

Prompt a warning for user to catch this.

Signed-off-by: Linjie Fu <linjie.fu at intel.com>
Signed-off-by: Martin Storsjö <martin at martin.st>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9310361252c88bcab74a7ccbe2c910c7a1a37397
---

 libavcodec/libopenh264enc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/libopenh264enc.c b/libavcodec/libopenh264enc.c
index dc3bd536a8..29269f9513 100644
--- a/libavcodec/libopenh264enc.c
+++ b/libavcodec/libopenh264enc.c
@@ -244,6 +244,8 @@ FF_ENABLE_DEPRECATION_WARNINGS
     param.sSpatialLayers[0].sSliceCfg.uiSliceMode               = s->slice_mode;
     param.sSpatialLayers[0].sSliceCfg.sSliceArgument.uiSliceNum = avctx->slices;
 #endif
+    if (avctx->slices == 0 && s->slice_mode == SM_FIXEDSLCNUM_SLICE)
+        av_log(avctx, AV_LOG_WARNING, "Slice count will be set automatically\n");
 
     if (s->slice_mode == SM_SIZELIMITED_SLICE) {
         if (s->max_nal_size) {