From dd974ded406aa945d5fd998c968f00c6fa15fd51 Mon Sep 17 00:00:00 2001
From: Mathias R <math625f@gmail.com>
Date: Mon, 11 Aug 2025 09:50:23 +0200
Subject: [PATCH] DSP Presets (#2309)

This PR adds support for DSP presets to be reused across players.
---
 music_assistant/constants.py          |  1 +
 music_assistant/controllers/config.py | 46 ++++++++++++++++++++++++++-
 2 files changed, 46 insertions(+), 1 deletion(-)

diff --git a/music_assistant/constants.py b/music_assistant/constants.py
index 9e6759bf..70116edb 100644
--- a/music_assistant/constants.py
+++ b/music_assistant/constants.py
@@ -56,6 +56,7 @@ CONF_DEPRECATED_EQ_BASS: Final[str] = "eq_bass"
 CONF_DEPRECATED_EQ_MID: Final[str] = "eq_mid"
 CONF_DEPRECATED_EQ_TREBLE: Final[str] = "eq_treble"
 CONF_PLAYER_DSP: Final[str] = "player_dsp"
+CONF_PLAYER_DSP_PRESETS: Final[str] = "player_dsp_presets"
 CONF_OUTPUT_CHANNELS: Final[str] = "output_channels"
 CONF_FLOW_MODE: Final[str] = "flow_mode"
 CONF_LOG_LEVEL: Final[str] = "log_level"
diff --git a/music_assistant/controllers/config.py b/music_assistant/controllers/config.py
index e8d3a1da..cb540592 100644
--- a/music_assistant/controllers/config.py
+++ b/music_assistant/controllers/config.py
@@ -22,7 +22,7 @@ from music_assistant_models.config_entries import (
     PlayerConfig,
     ProviderConfig,
 )
-from music_assistant_models.dsp import DSPConfig, ToneControlFilter
+from music_assistant_models.dsp import DSPConfig, DSPConfigPreset, ToneControlFilter
 from music_assistant_models.enums import EventType, ProviderFeature, ProviderType
 from music_assistant_models.errors import (
     ActionUnavailable,
@@ -39,6 +39,7 @@ from music_assistant.constants import (
     CONF_DEPRECATED_EQ_TREBLE,
     CONF_ONBOARD_DONE,
     CONF_PLAYER_DSP,
+    CONF_PLAYER_DSP_PRESETS,
     CONF_PLAYERS,
     CONF_PROVIDERS,
     CONF_SERVER_ID,
@@ -536,6 +537,49 @@ class ConfigController:
         )
         return config
 
+    @api_command("config/dsp_presets/get")
+    async def get_dsp_presets(self) -> list[DSPConfigPreset]:
+        """Return all user-defined DSP presets."""
+        raw_presets = self.get(CONF_PLAYER_DSP_PRESETS, {})
+        return [DSPConfigPreset.from_dict(preset) for preset in raw_presets.values()]
+
+    @api_command("config/dsp_presets/save")
+    async def save_dsp_presets(self, preset: DSPConfigPreset) -> DSPConfigPreset:
+        """
+        Save/update a user-defined DSP presets.
+
+        This method will validate the config before saving it to the persistent storage.
+        """
+        preset.validate()
+
+        if preset.preset_id is None:
+            # Generate a new preset_id if it does not exist
+            preset.preset_id = shortuuid.random(8).lower()
+
+        # Save the preset to the persistent storage
+        self.set(f"{CONF_PLAYER_DSP_PRESETS}/preset_{preset.preset_id}", preset.to_dict())
+
+        all_presets = await self.get_dsp_presets()
+
+        self.mass.signal_event(
+            EventType.DSP_PRESETS_UPDATED,
+            data=all_presets,
+        )
+
+        return preset
+
+    @api_command("config/dsp_presets/remove")
+    async def remove_dsp_preset(self, preset_id: str) -> None:
+        """Remove a user-defined DSP preset."""
+        self.mass.config.remove(f"{CONF_PLAYER_DSP_PRESETS}/preset_{preset_id}")
+
+        all_presets = await self.get_dsp_presets()
+
+        self.mass.signal_event(
+            EventType.DSP_PRESETS_UPDATED,
+            data=all_presets,
+        )
+
     def create_default_player_config(
         self,
         player_id: str,
-- 
2.34.1