From d05affc4e3277de84c16e71bf93624e5bed95904 Mon Sep 17 00:00:00 2001
From: Martin Pulec <martin.pulec@cesnet.cz>
Date: Fri, 13 Mar 2026 14:30:53 +0100
Subject: [PATCH] decklink: print SDK/driver compat status

Instead of:
"This UltraGrid version was compiled against DeckLink SDK 12.8. System version is 15.0."
print something like
"This UltraGrid version was compiled against DeckLink SDK 12.8 (system version 15.0 is compatible)."

to explicitly indicate, that higher version driver version is OK.
---
 src/blackmagic_common.cpp | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/src/blackmagic_common.cpp b/src/blackmagic_common.cpp
index 052d5e4bc..09325e73d 100644
--- a/src/blackmagic_common.cpp
+++ b/src/blackmagic_common.cpp
@@ -284,6 +284,8 @@ void print_decklink_version()
         BMD_STR current_version = NULL;
         IDeckLinkAPIInformation *APIInformation = NULL;
         HRESULT result;
+        char *currentVersionCString = nullptr;
+        const char *compat_status = TGREEN("compatible");
 
 #ifdef _WIN32
         bool com_initialized = false;
@@ -306,13 +308,19 @@ void print_decklink_version()
         if (result != S_OK) {
                 fprintf(stderr, "Cannot get API version string!\n");
                 goto cleanup;
-        } else {
-                fprintf(stderr, "This UltraGrid version was compiled against DeckLink SDK %s. ", BLACKMAGIC_DECKLINK_API_VERSION_STRING);
-                const char *currentVersionCString = get_cstr_from_bmd_api_str(current_version);
-                fprintf(stderr, "System version is %s.\n", currentVersionCString);
-                release_bmd_api_str(current_version);
-                free(const_cast<char *>(currentVersionCString));
         }
+        currentVersionCString = get_cstr_from_bmd_api_str(current_version);
+        if (BMDDeckLinkAPIVersion <= BMD_LAST_INCOMPATIBLE_ABI) {
+                compat_status = TRED("INCOMPATIBLE");
+        } else if (BMDDeckLinkAPIVersion < BLACKMAGIC_DECKLINK_API_VERSION) {
+                compat_status = "probably compatible";
+        }
+        color_printf("This UltraGrid version was compiled against DeckLink "
+                     "SDK %s (system version %s is " TBOLD("%s") ").\n",
+                     BLACKMAGIC_DECKLINK_API_VERSION_STRING,
+                     currentVersionCString, compat_status);
+        release_bmd_api_str(current_version);
+        free(currentVersionCString);
 
 cleanup:
         if (APIInformation) {