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"""
Configuration service for TOML-based lsfg configuration management.
"""
from pathlib import Path
from typing import Dict, Any
from .base_service import BaseService
from .config_schema import ConfigurationManager, ConfigurationData, CONFIG_SCHEMA
from .types import ConfigurationResponse
class ConfigurationService(BaseService):
"""Service for managing TOML-based lsfg configuration"""
def get_config(self) -> ConfigurationResponse:
"""Read current TOML configuration merged with launch script environment variables
Returns:
ConfigurationResponse with current configuration or error
"""
try:
# Get TOML configuration (with defaults if file doesn't exist)
if not self.config_file_path.exists():
# Return default configuration with DLL detection if file doesn't exist
from .dll_detection import DllDetectionService
dll_service = DllDetectionService(self.log)
toml_config = ConfigurationManager.get_defaults_with_dll_detection(dll_service)
else:
content = self.config_file_path.read_text(encoding='utf-8')
toml_config = ConfigurationManager.parse_toml_content(content)
# Get script environment variables (if script exists)
script_values = {}
if self.lsfg_script_path.exists():
try:
script_content = self.lsfg_script_path.read_text(encoding='utf-8')
script_values = ConfigurationManager.parse_script_content(script_content)
self.log.info(f"Parsed script values: {script_values}")
except Exception as e:
self.log.warning(f"Failed to parse launch script: {str(e)}")
# Merge TOML config with script values
config = ConfigurationManager.merge_config_with_script(toml_config, script_values)
return self._success_response(ConfigurationResponse, config=config)
except (OSError, IOError) as e:
error_msg = f"Error reading lsfg config: {str(e)}"
self.log.error(error_msg)
return self._error_response(ConfigurationResponse, str(e), config=None)
except Exception as e:
error_msg = f"Error parsing config file: {str(e)}"
self.log.error(error_msg)
# Return defaults with DLL detection if parsing fails
from .dll_detection import DllDetectionService
dll_service = DllDetectionService(self.log)
config = ConfigurationManager.get_defaults_with_dll_detection(dll_service)
return self._success_response(ConfigurationResponse,
f"Using default configuration due to parse error: {str(e)}",
config=config)
def update_config_from_dict(self, config: ConfigurationData) -> ConfigurationResponse:
"""Update TOML configuration from configuration dictionary (eliminates parameter duplication)
Args:
config: Complete configuration data dictionary
Returns:
ConfigurationResponse with success status
"""
try:
# Generate TOML content using centralized manager
toml_content = ConfigurationManager.generate_toml_content(config)
# Ensure config directory exists
self.config_dir.mkdir(parents=True, exist_ok=True)
# Write the updated config directly to preserve inode for file watchers
self._write_file(self.config_file_path, toml_content, 0o644)
# Update the launch script with the new configuration
script_result = self.update_lsfg_script(config)
if not script_result["success"]:
self.log.warning(f"Failed to update launch script: {script_result['error']}")
# Log with dynamic field listing
field_values = ", ".join(f"{k}={repr(v)}" for k, v in config.items())
self.log.info(f"Updated lsfg configuration: {field_values}")
return self._success_response(ConfigurationResponse,
"lsfg configuration updated successfully",
config=config)
except (OSError, IOError) as e:
error_msg = f"Error updating lsfg config: {str(e)}"
self.log.error(error_msg)
return self._error_response(ConfigurationResponse, str(e), config=None)
except ValueError as e:
error_msg = f"Invalid configuration arguments: {str(e)}"
self.log.error(error_msg)
return self._error_response(ConfigurationResponse, str(e), config=None)
def update_config(self, dll: str, multiplier: int, flow_scale: float,
performance_mode: bool, hdr_mode: bool,
experimental_present_mode: str = "fifo",
dxvk_frame_rate: int = 0,
enable_wow64: bool = False,
disable_steamdeck_mode: bool = False,
mangohud_workaround: bool = False,
disable_vkbasalt: bool = False) -> ConfigurationResponse:
"""Update TOML configuration
Args:
dll: Path to Lossless.dll
multiplier: LSFG multiplier value
flow_scale: LSFG flow scale value
performance_mode: Whether to enable performance mode
hdr_mode: Whether to enable HDR mode
experimental_present_mode: Experimental Vulkan present mode override
dxvk_frame_rate: Frame rate cap for DirectX games, before frame multiplier (0 = disabled)
enable_wow64: Whether to enable PROTON_USE_WOW64=1 for 32-bit games
disable_steamdeck_mode: Whether to disable Steam Deck mode
mangohud_workaround: Whether to enable MangoHud workaround with transparent overlay
disable_vkbasalt: Whether to disable vkBasalt layer
Returns:
ConfigurationResponse with success status
"""
try:
# Create configuration from individual arguments
config = ConfigurationManager.create_config_from_args(
dll, multiplier, flow_scale, performance_mode, hdr_mode,
experimental_present_mode, dxvk_frame_rate, enable_wow64, disable_steamdeck_mode,
mangohud_workaround, disable_vkbasalt
)
# Generate TOML content using centralized manager
toml_content = ConfigurationManager.generate_toml_content(config)
# Ensure config directory exists
self.config_dir.mkdir(parents=True, exist_ok=True)
# Write the updated config directly to preserve inode for file watchers
self._write_file(self.config_file_path, toml_content, 0o644)
# Update the launch script with the new configuration
script_result = self.update_lsfg_script(config)
if not script_result["success"]:
self.log.warning(f"Failed to update launch script: {script_result['error']}")
self.log.info(f"Updated lsfg TOML configuration: "
f"dll='{dll}', multiplier={multiplier}, flow_scale={flow_scale}, "
f"performance_mode={performance_mode}, hdr_mode={hdr_mode}, "
f"experimental_present_mode='{experimental_present_mode}', "
f"dxvk_frame_rate={dxvk_frame_rate}, "
f"enable_wow64={enable_wow64}, disable_steamdeck_mode={disable_steamdeck_mode}, "
f"mangohud_workaround={mangohud_workaround}, disable_vkbasalt={disable_vkbasalt}")
return self._success_response(ConfigurationResponse,
"lsfg configuration updated successfully",
config=config)
except (OSError, IOError) as e:
error_msg = f"Error updating lsfg config: {str(e)}"
self.log.error(error_msg)
return self._error_response(ConfigurationResponse, str(e), config=None)
except ValueError as e:
error_msg = f"Invalid configuration arguments: {str(e)}"
self.log.error(error_msg)
return self._error_response(ConfigurationResponse, str(e), config=None)
def update_dll_path(self, dll_path: str) -> ConfigurationResponse:
"""Update just the DLL path in the configuration
Args:
dll_path: Path to the Lossless.dll file
Returns:
ConfigurationResponse with success status
"""
try:
# Get current merged config (TOML + script)
current_response = self.get_config()
if not current_response["success"] or current_response["config"] is None:
# If we can't read current config, use defaults with DLL detection
from .dll_detection import DllDetectionService
dll_service = DllDetectionService(self.log)
config = ConfigurationManager.get_defaults_with_dll_detection(dll_service)
else:
config = current_response["config"]
# Update just the DLL path
config["dll"] = dll_path
# Generate TOML content and write it
toml_content = ConfigurationManager.generate_toml_content(config)
# Ensure config directory exists
self.config_dir.mkdir(parents=True, exist_ok=True)
# Write the updated config directly to preserve inode for file watchers
self._write_file(self.config_file_path, toml_content, 0o644)
self.log.info(f"Updated DLL path in lsfg configuration: '{dll_path}'")
return self._success_response(ConfigurationResponse,
f"DLL path updated to: {dll_path}",
config=config)
except Exception as e:
error_msg = f"Error updating DLL path: {str(e)}"
self.log.error(error_msg)
return self._error_response(ConfigurationResponse, str(e), config=None)
def update_lsfg_script(self, config: ConfigurationData) -> ConfigurationResponse:
"""Update the ~/lsfg launch script with current configuration
Args:
config: Configuration data to apply to the script
Returns:
ConfigurationResponse indicating success or failure
"""
try:
script_content = self._generate_script_content(config)
# Write the script file
self._write_file(self.lsfg_script_path, script_content, 0o755)
self.log.info(f"Updated lsfg launch script at {self.lsfg_script_path}")
return self._success_response(ConfigurationResponse,
"Launch script updated successfully",
config=config)
except Exception as e:
error_msg = f"Error updating launch script: {str(e)}"
self.log.error(error_msg)
return self._error_response(ConfigurationResponse, str(e), config=None)
def _generate_script_content(self, config: ConfigurationData) -> str:
"""Generate the content for the ~/lsfg launch script
Args:
config: Configuration data to apply to the script
Returns:
The complete script content as a string
"""
lines = [
"#!/bin/bash",
"# lsfg-vk launch script generated by decky-lossless-scaling-vk plugin",
"# This script sets up the environment for lsfg-vk to work with the plugin configuration"
]
# Add optional export statements based on configuration
if config.get("enable_wow64", False):
lines.append("export PROTON_USE_WOW64=1")
if config.get("disable_steamdeck_mode", False):
lines.append("export SteamDeck=0")
if config.get("mangohud_workaround", False):
lines.append("export MANGOHUD=1")
lines.append("export MANGOHUD_CONFIG=alpha=0.001,background_alpha=0.001")
if config.get("disable_vkbasalt", False):
lines.append("export DISABLE_VKBASALT=1")
# Add DXVK_FRAME_RATE if dxvk_frame_rate is set
dxvk_frame_rate = config.get("dxvk_frame_rate", 0)
if dxvk_frame_rate > 0:
lines.append(f"export DXVK_FRAME_RATE={dxvk_frame_rate}")
# Always add the LSFG_PROCESS export
lines.append("export LSFG_PROCESS=decky-lsfg-vk")
# Add the execution line
lines.append('exec "$@"')
return "\n".join(lines) + "\n"
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