Make VA-API be less noisy when probing cards.

[nageru] / quicksync_encoder.cpp

diff --git a/quicksync_encoder.cpp b/quicksync_encoder.cpp
index f664157b3d4ff67158a537ac24eb9c734a60c751..5200ce61b4911ab4e18692da0bfc17b483ae548d 100644 (file)
--- a/quicksync_encoder.cpp
+++ b/quicksync_encoder.cpp
@@ -2133,9 +2133,20 @@ int64_t QuickSyncEncoder::global_delay() const {
 
 string QuickSyncEncoder::get_usable_va_display()
 {
+       // Reduce the amount of chatter while probing,
+       // unless the user has specified otherwise.
+       bool need_env_reset = false;
+       if (getenv("LIBVA_MESSAGING_LEVEL") == nullptr) {
+               setenv("LIBVA_MESSAGING_LEVEL", "0", true);
+               need_env_reset = true;
+       }
+
        // First try the default (ie., whatever $DISPLAY is set to).
        unique_ptr<VADisplayWithCleanup> va_dpy = try_open_va("", nullptr, nullptr);
        if (va_dpy != nullptr) {
+               if (need_env_reset) {
+                       unsetenv("LIBVA_MESSAGING_LEVEL");
+               }
                return "";
        }
 
@@ -2154,6 +2165,9 @@ string QuickSyncEncoder::get_usable_va_display()
                                fprintf(stderr, "Autodetected %s as a suitable replacement; using it.\n",
                                        path.c_str());
                                globfree(&g);
+                               if (need_env_reset) {
+                                       unsetenv("LIBVA_MESSAGING_LEVEL");
+                               }
                                return path;
                        }
                }