Add BGM helper for H3 prompt curator

README.md

@@ -57,11 +57,11 @@
   - Builds one H3 prompt block per beat, with quick controls for per-shot timing, continuity, ref behavior, anchor additions, soundscape, and music while staying compatible with direct text editing.
 
 - `Dumas H3 Prompt Curator`
-  - Inputs: `action_prompt`, `anatomy_guard`, `subject_count_guard`, optional `anchor`, optional `soundscape`, optional `ref_1` through `ref_9`
+  - Inputs: `action_prompt`, `anatomy_guard`, `subject_count_guard`, optional `anchor`, optional `soundscape`, optional `bgm`, optional `ref_1` through `ref_9`
   - Outputs: `prompt`, `ref_image_1` through `ref_image_9`, `reference_count`, `debug`
   - Builds one standalone MiniMax H3 prompt from your final action text plus structured character/location references.
   - The action text can mention references by character/location name, alias, `<Picture N>`, or `<refN>`. Only mentioned references are emitted, and the output images are compacted/renumbered so skipped inputs do not leave gaps.
-  - Adds curated reference context, anatomy guard text, optional subject-count guard text, anchor/style text, and `overall_soundscape:` text while respecting MiniMax H3's reference-generation shape: one prompt plus up to nine reference images.
+  - Adds curated reference context, anatomy guard text, optional subject-count guard text, anchor/style text, `overall_soundscape:` text, and `background_music:` text while respecting MiniMax H3's reference-generation shape: one prompt plus up to nine reference images.
 
 - `Dumas H3 Shot Length`
   - Inputs: `shot_seconds`, `fps`, optional `cap_to_h3_max`
@@ -107,6 +107,11 @@
   - Output: `soundscape`
   - Matching soundscape helper for standalone H3 prompts. Pick a preset such as quiet interior, rainy street, cafe, city night, forest, industrial, or silent, then edit the text that flows into `Dumas H3 Prompt Curator`.
 
+- `Dumas Background Music Helper`
+  - Inputs: `bgm`, `bgm_description`
+  - Output: `bgm`
+  - Matching BGM helper for standalone H3 prompts. Pick a preset such as subtle tension, cinematic suspense, emotional piano, dark ambient, hopeful orchestral, retro synth, action pulse, lo-fi, or no vocals, then edit the text that flows into `Dumas H3 Prompt Curator`.
+
 - `Dumas JSON String to Object`
   - Input: `json_string`
   - Output: parsed `JSON`
@@ -263,7 +268,7 @@ decr  -> use index - 1
 
 `Dumas H3 Plan Attach Scene Images` and `Dumas H3 Plan Extract Scene Images` are a companion pair for `ComfyUI-MiniMaxH3-Contex-Loop` and the local `ref2v` lane. The upstream H3 plan node cannot dynamically grow nine new image sockets for every JSON-defined scene, so Dumas stores scene image bindings beside the plan using a lightweight token and an in-memory registry. That keeps `plan.json` archiving intact while still letting you wire up nine IMAGE sockets per scene through chained helper nodes.
 
-`Dumas Character Helper` is the restored two-image/text helper for general H3 workflows, and `Dumas Location Helper` mirrors it for scene/environment references. Both helpers also emit structured `REFERENCE` sockets for the curator. The structured `Dumas Character Reference` and `Dumas Location Reference` nodes remain available separately for workflows that want a single `REFERENCE` socket. `Dumas H3 Prompt Curator` consumes those structured references, assigns the final `<Picture N>` numbering, and outputs only the compacted images the prompt actually mentions.
+`Dumas Character Helper` is the restored two-image/text helper for general H3 workflows, and `Dumas Location Helper` mirrors it for scene/environment references. Both helpers also emit structured `REFERENCE` sockets for the curator. The structured `Dumas Character Reference` and `Dumas Location Reference` nodes remain available separately for workflows that want a single `REFERENCE` socket. `Dumas H3 Prompt Curator` consumes those structured references plus optional anchor, soundscape, and BGM strings, assigns the final `<Picture N>` numbering, and outputs only the compacted images the prompt actually mentions.
 
 `Dumas Strip Iteration Suffix` keeps the part before the first underscore and drops the rest. Names like `char123_pose_final.png` become `char123.png`, while names with no underscore such as `char123.png` are left untouched.
 

dumas_image_nodes.py

@@ -27,6 +27,12 @@ _H3_PLAN_IMAGE_BINDINGS_CAP = 128
 _H3_PLAN_IMAGE_SLOTS = 9
 _FOLDER_IMAGE_EXTS = (".png", ".jpg", ".jpeg", ".webp", ".bmp", ".gif", ".tiff", ".tif")
 _ANCHOR_STYLE_H3_NOTE = ""
+_ANCHOR_STYLE_LEGACY_NOTE_RE = re.compile(
+    r"\s*Keep this anchor focused on persistent camera language, lighting, "
+    r"texture, environment treatment, and tone; do not name characters or "
+    r"describe one-off actions\.?",
+    re.I,
+)
 _H3_PROMPT_REF_SLOTS = 9
 _H3_PROMPT_MAX_CHARS = 7000
 _PICTURE_TAG_RE = re.compile(r"<\s*picture[\s_\-]*(\d+)\s*>", re.I)
@@ -392,6 +398,51 @@ _SOUNDSCAPE_PRESETS = OrderedDict(
         ("custom", ""),
     ]
 )
+_BGM_PRESETS = OrderedDict(
+    [
+        (
+            "none",
+            "",
+        ),
+        (
+            "subtle tension",
+            "low, restrained tension bed with sparse pulses and no vocals",
+        ),
+        (
+            "cinematic suspense",
+            "cinematic suspense score with muted strings, low drones, and controlled rising pressure",
+        ),
+        (
+            "emotional piano",
+            "soft emotional piano underscoring with gentle space and no vocals",
+        ),
+        (
+            "dark ambient",
+            "dark ambient music bed with deep drones, distant texture, and slow unease",
+        ),
+        (
+            "hopeful orchestral",
+            "hopeful orchestral underscore with warm strings, gentle brass, and restrained lift",
+        ),
+        (
+            "retro synth",
+            "retro synth score with analog pulses, warm pads, and steady momentum",
+        ),
+        (
+            "action pulse",
+            "driving action pulse with percussion, rhythmic bass, and urgent forward motion",
+        ),
+        (
+            "lo-fi",
+            "soft lo-fi instrumental bed with mellow rhythm and warm tape texture",
+        ),
+        (
+            "no vocals",
+            "instrumental background music only, no singing, no lyrics, no vocal hooks",
+        ),
+        ("custom", ""),
+    ]
+)
 
 
 def _soundscape_options():
@@ -400,6 +451,14 @@ def _soundscape_options():
 
 def _soundscape_description(soundscape_name):
     return _SOUNDSCAPE_PRESETS.get(soundscape_name, "")
+
+
+def _bgm_options():
+    return list(_BGM_PRESETS.keys())
+
+
+def _bgm_description(bgm_name):
+    return _BGM_PRESETS.get(bgm_name, "")
 _LOAD_IMAGES_FOLDER_DEFAULT_STATE = {
     "version": 1,
     "folder": "",
@@ -420,6 +479,11 @@ def _anchor_style_description(style_name):
     return _ANCHOR_STYLE_PRESETS.get(str(style_name or "").strip().lower(), "")
 
 
+def _clean_anchor_style_text(text):
+    cleaned = _ANCHOR_STYLE_LEGACY_NOTE_RE.sub("", str(text or ""))
+    return re.sub(r"[ \t]{2,}", " ", cleaned).strip()
+
+
 def _clean_input_token_value(value):
     cleaned = ""
     if value is not None:
@@ -1176,6 +1240,7 @@ def curate_h3_prompt(
     action_prompt,
     anchor="",
     soundscape="",
+    bgm="",
     refs=(),
     anatomy_guard="auto",
     subject_count_guard="auto",
@@ -1198,6 +1263,7 @@ def curate_h3_prompt(
     ):
         _append_prompt_section(prompt_parts, "Subject count guard", _subject_count_guard_text(selected))
     _append_prompt_section(prompt_parts, "overall_soundscape", soundscape)
+    _append_prompt_section(prompt_parts, "background_music", bgm)
 
     prompt = "\n\n".join(prompt_parts).strip()
     if len(prompt) > _H3_PROMPT_MAX_CHARS:
@@ -2550,10 +2616,53 @@ class DumasSoundscapeHelperNode:
         return (text,)
 
 
+class DumasBackgroundMusicHelperNode:
+    DESCRIPTION = (
+        "Choose a background music preset, auto-fill its editable description, "
+        "and pass the final BGM text downstream for MiniMax H3 prompts."
+    )
+    RETURN_TYPES = ("STRING",)
+    RETURN_NAMES = ("bgm",)
+    FUNCTION = "build_bgm"
+    CATEGORY = "Dumas/MiniMax"
+
+    @classmethod
+    def INPUT_TYPES(cls):
+        default_bgm = "none"
+        return {
+            "required": {
+                "bgm": (
+                    _bgm_options(),
+                    {
+                        "default": default_bgm,
+                        "tooltip": "Preset title used to seed the editable background music description.",
+                    },
+                ),
+                "bgm_description": (
+                    "STRING",
+                    {
+                        "default": _bgm_description(default_bgm),
+                        "multiline": True,
+                        "tooltip": (
+                            "Editable background music description. Whatever text is here "
+                            "is what the node outputs to the bgm socket."
+                        ),
+                    },
+                ),
+            }
+        }
+
+    def build_bgm(self, bgm, bgm_description):
+        text = str(bgm_description or "").strip()
+        if not text:
+            text = _bgm_description(bgm)
+        return (text,)
+
+
 class DumasH3PromptCuratorNode:
     DESCRIPTION = (
         "Curate one MiniMax H3 prompt from an action textbox, anchor text, "
-        "soundscape text, and up to nine structured references. References are "
+        "soundscape/BGM text, and up to nine structured references. References are "
         "compacted so only mentioned names, aliases, or explicit <Picture N>/<refN> "
         "tags are sent onward."
     )
@@ -2592,6 +2701,13 @@ class DumasH3PromptCuratorNode:
                     "tooltip": "Optional soundscape text, usually from Dumas Soundscape Helper.",
                 },
             ),
+            "bgm": (
+                "STRING",
+                {
+                    "forceInput": True,
+                    "tooltip": "Optional background music text, usually from Dumas Background Music Helper.",
+                },
+            ),
         }
         for slot in range(1, _H3_PROMPT_REF_SLOTS + 1):
             optional[f"ref_{slot}"] = (
@@ -2647,6 +2763,7 @@ class DumasH3PromptCuratorNode:
         subject_count_guard,
         anchor="",
         soundscape="",
+        bgm="",
         ref_1=None,
         ref_2=None,
         ref_3=None,
@@ -2661,6 +2778,7 @@ class DumasH3PromptCuratorNode:
             action_prompt,
             anchor=anchor,
             soundscape=soundscape,
+            bgm=bgm,
             refs=(ref_1, ref_2, ref_3, ref_4, ref_5, ref_6, ref_7, ref_8, ref_9),
             anatomy_guard=anatomy_guard,
             subject_count_guard=subject_count_guard,
@@ -2704,9 +2822,9 @@ class DumasAnchorStyleNode:
         }
 
     def build_anchor(self, anchor_style, style_description):
-        text = str(style_description or "").strip()
+        text = _clean_anchor_style_text(style_description)
         if not text:
-            text = _anchor_style_description(anchor_style)
+            text = _clean_anchor_style_text(_anchor_style_description(anchor_style))
         return (text,)
 
 
@@ -2719,6 +2837,7 @@ NODE_CLASS_MAPPINGS = {
     "DumasCharacterReference": DumasCharacterReferenceNode,
     "DumasLocationReference": DumasLocationReferenceNode,
     "DumasSoundscapeHelper": DumasSoundscapeHelperNode,
+    "DumasBackgroundMusicHelper": DumasBackgroundMusicHelperNode,
     "DumasH3PromptCurator": DumasH3PromptCuratorNode,
     "DumasAnchorStyle": DumasAnchorStyleNode,
     "DumasCharacterHelper": DumasCharacterHelperNode,
@@ -2735,6 +2854,7 @@ NODE_DISPLAY_NAME_MAPPINGS = {
     "DumasCharacterReference": "Dumas Character Reference",
     "DumasLocationReference": "Dumas Location Reference",
     "DumasSoundscapeHelper": "Dumas Soundscape Helper",
+    "DumasBackgroundMusicHelper": "Dumas Background Music Helper",
     "DumasH3PromptCurator": "Dumas H3 Prompt Curator",
     "DumasAnchorStyle": "Dumas Anchor Style",
     "DumasCharacterHelper": "Dumas Character Helper",

tests/test_dumas_image_nodes.py

@@ -440,6 +440,13 @@ class DumasImageNodeTests(unittest.TestCase):
 
         self.assertEqual(result[0], "steady rain, wet pavement, distant traffic hum")
 
+    def test_background_music_helper_defaults_to_selected_preset_description(self):
+        node = self.image_nodes.DumasBackgroundMusicHelperNode()
+
+        result = node.build_bgm("subtle tension", "")
+
+        self.assertEqual(result[0], "low, restrained tension bed with sparse pulses and no vocals")
+
     def test_h3_prompt_curator_compacts_named_references(self):
         node = self.image_nodes.DumasH3PromptCuratorNode()
         dave_image = FakeTensorBatch()
@@ -472,6 +479,7 @@ class DumasImageNodeTests(unittest.TestCase):
             subject_count_guard="auto",
             anchor="grounded handheld thriller",
             soundscape="steady rain",
+            bgm="low suspense music",
             ref_1=dave,
             ref_2=van,
             ref_3=cafe,
@@ -483,6 +491,8 @@ class DumasImageNodeTests(unittest.TestCase):
         self.assertIn("Action: Dave runs from the Coffee Shop into the rain.", prompt)
         self.assertIn("Anatomy guard:", prompt)
         self.assertIn("Subject count guard:", prompt)
+        self.assertIn("overall_soundscape: steady rain", prompt)
+        self.assertIn("background_music: low suspense music", prompt)
         self.assertIn("exactly one named character: <Picture 1> Dave", prompt)
         self.assertIs(result[1], dave_image)
         self.assertIs(result[2], cafe_image)
@@ -616,10 +626,12 @@ class DumasImageNodeTests(unittest.TestCase):
         self.assertIs(mappings["DumasCharacterHelper"], self.image_nodes.DumasCharacterHelperNode)
         self.assertIs(mappings["DumasLocationHelper"], self.image_nodes.DumasLocationHelperNode)
         self.assertIs(mappings["DumasSoundscapeHelper"], self.image_nodes.DumasSoundscapeHelperNode)
+        self.assertIs(mappings["DumasBackgroundMusicHelper"], self.image_nodes.DumasBackgroundMusicHelperNode)
         self.assertIs(mappings["DumasH3PromptCurator"], self.image_nodes.DumasH3PromptCuratorNode)
         self.assertEqual(display["DumasCharacterHelper"], "Dumas Character Helper")
         self.assertEqual(display["DumasLocationHelper"], "Dumas Location Helper")
         self.assertEqual(display["DumasSoundscapeHelper"], "Dumas Soundscape Helper")
+        self.assertEqual(display["DumasBackgroundMusicHelper"], "Dumas Background Music Helper")
         self.assertEqual(display["DumasH3PromptCurator"], "Dumas H3 Prompt Curator")
 
     def test_h3_prompt_curator_uses_documented_reference_limits(self):
@@ -688,6 +700,19 @@ class DumasImageNodeTests(unittest.TestCase):
         self.assertIn("real time", result[0])
         self.assertNotIn("persistent camera language", result[0])
 
+    def test_anchor_style_node_strips_legacy_persistent_anchor_note(self):
+        node = self.image_nodes.DumasAnchorStyleNode()
+        legacy = (
+            "Gritty handheld realism. Keep this anchor focused on persistent camera "
+            "language, lighting, texture, environment treatment, and tone; do not "
+            "name characters or describe one-off actions."
+        )
+
+        result = node.build_anchor("cinematic action movie", legacy)
+
+        self.assertEqual(result[0], "Gritty handheld realism.")
+        self.assertNotIn("persistent camera language", result[0])
+
     def test_anchor_style_node_prefers_manual_description_edits(self):
         node = self.image_nodes.DumasAnchorStyleNode()
         custom = "Lo-fi pirate broadcast with smeared highlights and anxious zoom corrections."