整理: MetasStore にコアを内蔵

voicevox_engine/app/application.py

@@ -22,7 +22,7 @@
 from voicevox_engine.core.core_initializer import CoreManager
 from voicevox_engine.engine_manifest import EngineManifest
 from voicevox_engine.library.library_manager import LibraryManager
-from voicevox_engine.metas.MetasStore import MetasStore
+from voicevox_engine.metas.MetasStore import MetasStore, generate_core_characters_getter
 from voicevox_engine.preset.preset_manager import PresetManager
 from voicevox_engine.resource_manager import ResourceManager
 from voicevox_engine.setting.model import CorsPolicyMode
@@ -66,7 +66,11 @@ def generate_app(
 
     resource_manager = ResourceManager(is_development())
     resource_manager.register_dir(speaker_info_dir)
-    metas_store = MetasStore(speaker_info_dir, resource_manager)
+    metas_store = MetasStore(
+        speaker_info_dir,
+        generate_core_characters_getter(core_manager),
+        resource_manager,
+    )
 
     app.include_router(
         generate_tts_pipeline_router(
@@ -77,9 +81,7 @@ def generate_app(
     app.include_router(
         generate_preset_router(preset_manager, verify_mutability_allowed)
     )
-    app.include_router(
-        generate_speaker_router(core_manager, resource_manager, metas_store)
-    )
+    app.include_router(generate_speaker_router(resource_manager, metas_store))
     if engine_manifest.supported_features.manage_library:
         app.include_router(
             generate_library_router(library_manager, verify_mutability_allowed)

voicevox_engine/app/routers/character.py

@@ -6,7 +6,6 @@
 from fastapi.responses import FileResponse
 from pydantic.json_schema import SkipJsonSchema
 
-from voicevox_engine.core.core_initializer import CoreManager
 from voicevox_engine.metas.Metas import Speaker, SpeakerInfo
 from voicevox_engine.metas.MetasStore import MetasStore, ResourceFormat
 from voicevox_engine.resource_manager import ResourceManager, ResourceManagerError
@@ -19,7 +18,6 @@ async def _get_resource_baseurl(request: Request) -> str:
 
 
 def generate_speaker_router(
-    core_manager: CoreManager,
     resource_manager: ResourceManager,
     metas_store: MetasStore,
 ) -> APIRouter:
@@ -29,9 +27,7 @@ def generate_speaker_router(
     @router.get("/speakers")
     def speakers(core_version: str | SkipJsonSchema[None] = None) -> list[Speaker]:
         """話者情報の一覧を取得します。"""
-        version = core_version or core_manager.latest_version()
-        core = core_manager.get_core(version)
-        return metas_store.talk_characters(core.characters)
+        return metas_store.talk_characters(core_version)
 
     @router.get("/speaker_info")
     def speaker_info(
@@ -44,22 +40,18 @@ def speaker_info(
         指定されたspeaker_uuidの話者に関する情報をjson形式で返します。
         画像や音声はresource_formatで指定した形式で返されます。
         """
-        version = core_version or core_manager.latest_version()
-        core = core_manager.get_core(version)
         return metas_store.speaker_info(
             speaker_uuid=speaker_uuid,
             speaker_or_singer="speaker",
-            core_characters=core.characters,
+            core_version=core_version,
             resource_baseurl=resource_baseurl,
             resource_format=resource_format,
         )
 
     @router.get("/singers")
     def singers(core_version: str | SkipJsonSchema[None] = None) -> list[Speaker]:
         """歌手情報の一覧を取得します"""
-        version = core_version or core_manager.latest_version()
-        core = core_manager.get_core(version)
-        return metas_store.sing_characters(core.characters)
+        return metas_store.sing_characters(core_version)
 
     @router.get("/singer_info")
     def singer_info(
@@ -72,12 +64,10 @@ def singer_info(
         指定されたspeaker_uuidの歌手に関する情報をjson形式で返します。
         画像や音声はresource_formatで指定した形式で返されます。
         """
-        version = core_version or core_manager.latest_version()
-        core = core_manager.get_core(version)
         return metas_store.speaker_info(
             speaker_uuid=speaker_uuid,
             speaker_or_singer="singer",
-            core_characters=core.characters,
+            core_version=core_version,
             resource_baseurl=resource_baseurl,
             resource_format=resource_format,
         )

voicevox_engine/app/routers/morphing.py

@@ -54,10 +54,7 @@ def morphable_targets(
         プロパティが存在しない場合は、モーフィングが許可されているとみなします。
         返り値のスタイルIDはstring型なので注意。
         """
-        version = core_version or core_manager.latest_version()
-        core = core_manager.get_core(version)
-
-        characters = metas_store.load_combined_metas(core.characters)
+        characters = metas_store.characters(core_version)
         speakers = characters_to_speakers(characters)
         try:
             morphable_targets = get_morphable_targets(speakers, base_style_ids)
@@ -98,7 +95,7 @@ def _synthesis_morphing(
         core = core_manager.get_core(version)
 
         # モーフィングが許可されないキャラクターペアを拒否する
-        characters = metas_store.load_combined_metas(core.characters)
+        characters = metas_store.characters(core_version)
         speakers = characters_to_speakers(characters)
         try:
             morphable = is_morphable(speakers, base_style_id, target_style_id)

voicevox_engine/metas/MetasStore.py

@@ -2,12 +2,13 @@
 
 from dataclasses import dataclass
 from pathlib import Path
-from typing import Final, Literal, TypeAlias
+from typing import Callable, Final, Literal, TypeAlias
 
 from fastapi import HTTPException
 from pydantic import BaseModel, Field
 
 from voicevox_engine.core.core_adapter import CoreCharacter, CoreCharacterStyle
+from voicevox_engine.core.core_initializer import CoreManager
 from voicevox_engine.metas.Metas import (
     Speaker,
     SpeakerInfo,
@@ -68,21 +69,43 @@ class _EngineSpeaker(BaseModel):
     )
 
 
+GetCoreCharacters: TypeAlias = Callable[[str | None], list[CoreCharacter]]
+
+
+def generate_core_characters_getter(core_manager: CoreManager) -> GetCoreCharacters:
+    """コアマネージャーを基に `get_core_characters()` 関数を生成する。"""
+
+    def get_core_characters(version: str | None) -> list[CoreCharacter]:
+        """バージョンで指定されたコアからキャラクター一覧を取得する。"""
+        # NOTE: CoreManager へ直接触れずにキャラクター情報を取得するために関数化している
+        version = version or core_manager.latest_version()
+        core = core_manager.get_core(version)
+        return core.characters
+
+    return get_core_characters
+
+
 class MetasStore:
     """
     話者やスタイルのメタ情報を管理する
     """
 
     def __init__(
-        self, engine_speakers_path: Path, resource_manager: ResourceManager
+        self,
+        engine_speakers_path: Path,
+        get_core_characters: GetCoreCharacters,
+        resource_manager: ResourceManager,
     ) -> None:
         """
         Parameters
         ----------
         engine_speakers_path : Path
             エンジンに含まれる話者メタ情報ディレクトリのパス。
+        get_core_characters:
+            コアに含まれるキャラクター情報を返す関数
         """
         self._speakers_path = engine_speakers_path
+        self._get_core_characters = get_core_characters
         self._resource_manager = resource_manager
         # エンジンに含まれる各話者のメタ情報
         self._loaded_metas: dict[str, _EngineSpeaker] = {
@@ -93,12 +116,12 @@ def __init__(
             if folder.is_dir()
         }
 
-    def load_combined_metas(
-        self, core_characters: list[CoreCharacter]
-    ) -> list[Character]:
-        """コアとエンジンのメタ情報を統合する。"""
+    def characters(self, core_version: str | None) -> list[Character]:
+        """キャラクターの情報の一覧を取得する。"""
+
+        # エンジンとコアのキャラクター情報を統合する
         characters: list[Character] = []
-        for core_character in core_characters:
+        for core_character in self._get_core_characters(core_version):
             character_uuid = core_character.speaker_uuid
             engine_character = self._loaded_metas[character_uuid]
             styles = cast_styles(core_character.styles)
@@ -124,7 +147,7 @@ def speaker_info(
         self,
         speaker_uuid: str,
         speaker_or_singer: Literal["speaker", "singer"],
-        core_characters: list[CoreCharacter],
+        core_version: str | None,
         resource_baseurl: str,
         resource_format: ResourceFormat,
     ) -> SpeakerInfo:
@@ -151,7 +174,7 @@ def speaker_info(
         #         ...
 
         # 該当話者を検索する
-        characters = self.load_combined_metas(core_characters)
+        characters = self.characters(core_version)
         speakers = filter_characters_and_styles(characters, speaker_or_singer)
         speaker = next(
             filter(lambda spk: spk.speaker_uuid == speaker_uuid, speakers), None
@@ -220,15 +243,13 @@ def _resource_str(path: Path) -> str:
         )
         return spk_info
 
-    def talk_characters(self, core_characters: list[CoreCharacter]) -> list[Speaker]:
+    def talk_characters(self, core_version: str | None) -> list[Speaker]:
         """話せるキャラクターの情報の一覧を取得する。"""
-        characters = self.load_combined_metas(core_characters)
-        return filter_characters_and_styles(characters, "speaker")
+        return filter_characters_and_styles(self.characters(core_version), "speaker")
 
-    def sing_characters(self, core_characters: list[CoreCharacter]) -> list[Speaker]:
+    def sing_characters(self, core_version: str | None) -> list[Speaker]:
         """歌えるキャラクターの情報の一覧を取得する。"""
-        characters = self.load_combined_metas(core_characters)
-        return filter_characters_and_styles(characters, "singer")
+        return filter_characters_and_styles(self.characters(core_version), "singer")
 
 
 def filter_characters_and_styles(