重构UCD模块

app/tests/local_dimming.py

@@ -157,9 +157,118 @@ def _ensure_checkerboard_image(width, height, grid_size, center_white):
     _IMAGE_CACHE[key] = path
     return path
 
+
+def _ld_ucd_params_signature(self: "PQAutomationApp") -> tuple:
+    """Local Dimming 发图前 UCD 参数签名，用于跳过未变化的重复配置。"""
+    test_type = getattr(self.config, "current_test_type", "screen_module")
+    cfg = self.config.current_test_types.get(test_type, {})
+    timing = cfg.get("timing", "")
+
+    if test_type == "screen_module":
+        color_space = (
+            self.screen_module_color_space_var.get()
+            if hasattr(self, "screen_module_color_space_var")
+            else cfg.get("colorimetry", "sRGB")
+        )
+        data_range = (
+            self.screen_module_data_range_var.get()
+            if hasattr(self, "screen_module_data_range_var")
+            else cfg.get("data_range", "Full")
+        )
+        bit_depth = (
+            self.screen_module_bit_depth_var.get()
+            if hasattr(self, "screen_module_bit_depth_var")
+            else f"{int(cfg.get('bpc', 8))}bit"
+        )
+        output_format = (
+            self.screen_module_output_format_var.get()
+            if hasattr(self, "screen_module_output_format_var")
+            else cfg.get("color_format", "RGB")
+        )
+    elif test_type == "sdr_movie":
+        color_space = (
+            self.sdr_color_space_var.get()
+            if hasattr(self, "sdr_color_space_var")
+            else cfg.get("colorimetry", "sRGB")
+        )
+        data_range = (
+            self.sdr_data_range_var.get()
+            if hasattr(self, "sdr_data_range_var")
+            else cfg.get("data_range", "Full")
+        )
+        bit_depth = (
+            self.sdr_bit_depth_var.get()
+            if hasattr(self, "sdr_bit_depth_var")
+            else f"{int(cfg.get('bpc', 8))}bit"
+        )
+        output_format = (
+            self.sdr_output_format_var.get()
+            if hasattr(self, "sdr_output_format_var")
+            else cfg.get("color_format", "RGB")
+        )
+    elif test_type == "hdr_movie":
+        color_space = (
+            self.hdr_color_space_var.get()
+            if hasattr(self, "hdr_color_space_var")
+            else cfg.get("colorimetry", "sRGB")
+        )
+        data_range = (
+            self.hdr_data_range_var.get()
+            if hasattr(self, "hdr_data_range_var")
+            else cfg.get("data_range", "Full")
+        )
+        bit_depth = (
+            self.hdr_bit_depth_var.get()
+            if hasattr(self, "hdr_bit_depth_var")
+            else f"{int(cfg.get('bpc', 8))}bit"
+        )
+        output_format = (
+            self.hdr_output_format_var.get()
+            if hasattr(self, "hdr_output_format_var")
+            else cfg.get("color_format", "RGB")
+        )
+        max_cll = self.hdr_maxcll_var.get() if hasattr(self, "hdr_maxcll_var") else None
+        max_fall = self.hdr_maxfall_var.get() if hasattr(self, "hdr_maxfall_var") else None
+        return (test_type, timing, color_space, data_range, bit_depth, output_format, max_cll, max_fall)
+    elif test_type == "local_dimming":
+        color_space = (
+            self.local_dimming_color_space_var.get()
+            if hasattr(self, "local_dimming_color_space_var")
+            else cfg.get("colorimetry", "sRGB")
+        )
+        data_range = (
+            self.local_dimming_data_range_var.get()
+            if hasattr(self, "local_dimming_data_range_var")
+            else cfg.get("data_range", "Full")
+        )
+        bit_depth = (
+            self.local_dimming_bit_depth_var.get()
+            if hasattr(self, "local_dimming_bit_depth_var")
+            else f"{int(cfg.get('bpc', 8))}bit"
+        )
+        output_format = (
+            self.local_dimming_output_format_var.get()
+            if hasattr(self, "local_dimming_output_format_var")
+            else cfg.get("color_format", "RGB")
+        )
+    else:
+        return (test_type,)
+
+    return (test_type, timing, color_space, data_range, bit_depth, output_format)
+
+
+def invalidate_ld_ucd_params_cache(self: "PQAutomationApp") -> None:
+    """信号格式或分辨率变更后，强制下次发图重新写入 UCD 参数。"""
+    self._last_ld_ucd_signature = None
+
+
 def _apply_ld_ucd_params(self: "PQAutomationApp") -> bool:
     """发送 Local Dimming 图案前，按当前测试类型写入 UCD 参数。"""
-    test_type = getattr(self.config, "current_test_type", "screen_module")
+    signature = _ld_ucd_params_signature(self)
+    if getattr(self, "_last_ld_ucd_signature", None) == signature:
+        return True
+
+    test_type = signature[0]
     cfg = self.config.current_test_types.get(test_type, {})
 
     try:
@@ -279,6 +388,7 @@ def _apply_ld_ucd_params(self: "PQAutomationApp") -> bool:
             self._dispatch_ui(self.log_gui.log, "Local Dimming UCD 参数设置失败", "error")
             return False
 
+        self._last_ld_ucd_signature = signature
         return True
     except Exception as e:
         self._dispatch_ui(self.log_gui.log, f"Local Dimming UCD 参数设置异常: {e}", "error")
@@ -914,5 +1024,6 @@ class LocalDimmingMixin:
     clear_ld_records = clear_ld_records
     save_local_dimming_results = save_local_dimming_results
     plot_ld_instant_peak_curve = plot_ld_instant_peak_curve
+    invalidate_ld_ucd_params_cache = invalidate_ld_ucd_params_cache
 
     _insert_ld_tree_item = _insert_ld_tree_item