lavc,lavd vid: print used subs in warn

Print used subsampling (or sw fmt in lavd) in warning if not using 4:2:0. This may be helpful sometimes as an additional information.
CESNET · Oct 6, 2023 · f2ac2cb · f2ac2cb
1 parent 15fe21d
commit f2ac2cb
Show file tree

Hide file tree

Showing 2 changed files with 7 additions and 4 deletions.
diff --git a/src/video_compress/libavcodec.cpp b/src/video_compress/libavcodec.cpp
@@ -1584,8 +1584,10 @@ incomp_feature_warn(enum incomp_feature f, int req_val)
                         return;
                 }
                 MSG(WARNING,
-                    "Selected pixfmt has not 4:2:0 subsampling, "
-                    "which is usually not supported by hw. decoders\n");
+                    "Selected pixfmt has subsampling %d:%d:%d and not 4:2:0, "
+                    "which is usually not supported by hw. decoders\n",
+                    (req_val / 1000), ((req_val / 100) % 10),
+                    ((req_val / 10) % 10));
                 disable_opt = ":subs=420";
                 break;
         }

diff --git a/src/video_decompress/libavcodec.c b/src/video_decompress/libavcodec.c
@@ -599,8 +599,9 @@ static enum AVPixelFormat get_format_callback(struct AVCodecContext *s, const en
                 struct state_libavcodec_decompress *state = (struct state_libavcodec_decompress *) s->opaque; 
                 if (av_pixfmt_get_subsampling(s->sw_pix_fmt) != SUBS_420) {
                         log_msg(LOG_LEVEL_WARNING, "[lavd] Hw. acceleration requested "
-                                        "but incoming video has not 4:2:0 subsampling, "
-                                        "which is usually not supported by hw. accelerators\n");
+                                        "but incoming video has not 4:2:0 subsampling (format is %s), "
+                                        "which is usually not supported by hw. accelerators\n",
+                                        av_get_pix_fmt_name(s->sw_pix_fmt));
                 }
                 const enum hw_accel_type forced_hwaccel =
                     strlen(hwaccel) > 0 ? hw_accel_from_str(hwaccel)