Activate AMF intra refresh (GDR) - fixing xbox moonlight artefacts

src/amf/amf_d3d11.cpp

@@ -988,6 +988,37 @@ namespace amf {
       if (config.pa_activity_type && !set_verified_int64(AMF_PA_ACTIVITY_TYPE, *config.pa_activity_type, "PA activity type")) return false;
     }
 
+// BEGIN INSERT1 (HEVC Gradual Decoder Refresh configuration)
+if (client_config.enableIntraRefresh == 1) {
+  constexpr int64_t GOP_SIZE = 120; 
+  constexpr int64_t CTU_SIZE = 64;
+
+  encoder->SetProperty(AMF_VIDEO_ENCODER_HEVC_NUM_GOPS_PER_IDR, 0);
+
+  if (encoder->SetProperty(AMF_VIDEO_ENCODER_HEVC_GOP_SIZE, GOP_SIZE) == AMF_OK) {
+    const int64_t width = (encode_width > 0) ? encode_width : 3840;
+    const int64_t height = (encode_height > 0) ? encode_height : 2160;
+
+    const int64_t ctu_width = (width + CTU_SIZE - 1) / CTU_SIZE;  
+    const int64_t ctu_height = (height + CTU_SIZE - 1) / CTU_SIZE; 
+
+    constexpr int64_t TARGET_DURATION = GOP_SIZE; 
+    const int64_t ctbs_per_slot = 
+      std::max<int64_t>(1, (ctu_width * ctu_height) / TARGET_DURATION); 
+
+    if (!set_verified_int64(
+        AMF_VIDEO_ENCODER_HEVC_INTRA_REFRESH_NUM_CTBS_PER_SLOT,
+        ctbs_per_slot,
+        "HEVC GDR CTBs Per Slot")) {
+      return false;
+    }
+    BOOST_LOG(info) << "AMF: Fixed HEVC GDR active. " << ctbs_per_slot << " CTBs/slot configured.";
+  } 
+} else {
+  BOOST_LOG(info) << "AMF: Intra-Refresh disabled (not requested by client)";
+}
+// END INSERT1
+
     // NOTE: LOWLATENCY_MODE is intentionally NOT forced here.
     //
     // Previously this block hard-coded AMF_VIDEO_ENCODER_(HEVC_)LOWLATENCY_MODE = true
@@ -1838,7 +1869,7 @@ namespace amf {
         }
       }
     }
-
+    
     auto disable_rfi_after_property_failure = [&](const char *property_label, AMF_RESULT property_result) {
       BOOST_LOG(warning) << "AMF: failed to apply " << property_label << " (error=" << property_result
                          << "); disabling RFI and falling back to IDR recovery";
@@ -1860,6 +1891,21 @@ namespace amf {
       return false;
     };
 
+// BEGIN INSERT2 (HEVC GDR IDR interception)
+if (encoder && current_config.enableIntraRefresh == 1 && force_idr) {
+  if (surface -> SetProperty(
+      AMF_VIDEO_ENCODER_HEVC_FORCE_PICTURE_TYPE,
+      AMF_VIDEO_ENCODER_HEVC_PICTURE_TYPE_I) != AMF_OK) {
+    BOOST_LOG(warning) << "AMF GDR: Failed to suppress IDR request";
+  }
+  if (surface -> SetProperty(
+      AMF_VIDEO_ENCODER_HEVC_INSERT_HEADER,
+      true) != AMF_OK) {
+    BOOST_LOG(warning) << "AMF GDR: Failed to insert VPS/SPS/PPS";
+  }
+}
+// END INSERT2
+
     auto set_forced_idr_properties = [&]() {
       auto check = [&](AMF_RESULT property_result, const char *label) {
         if (property_result == AMF_OK) return true;