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Carla
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Carla/source/frontend/carla_shared.py

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  1. #!/usr/bin/env python3

  2. # SPDX-FileCopyrightText: 2011-2025 Filipe Coelho <falktx@falktx.com>

  3. # SPDX-License-Identifier: GPL-2.0-or-later

  4. 

  5. # ------------------------------------------------------------------------------------------------------------

  6. # Imports (Global)

  7. 

  8. import os

  9. import sys

  10. 

  11. from math import fmod, log10

  12. 

  13. # ------------------------------------------------------------------------------------------------------------

  14. # Imports (Signal)

  15. 

  16. from signal import signal, SIGINT, SIGTERM

  17. 

  18. try:

  19.     from signal import SIGUSR1

  20.     haveSIGUSR1 = True

  21. except:

  22.     haveSIGUSR1 = False

  23. 

  24. # ------------------------------------------------------------------------------------------------------------

  25. # Imports (PyQt)

  26. 

  27. from qt_compat import qt_config

  28. 

  29. # pylint: disable=import-error

  30. 

  31. if qt_config == 5:

  32.     # import changed in PyQt 5.15.8, so try both

  33.     try:

  34.         from PyQt5.Qt import PYQT_VERSION_STR

  35.     except ImportError:

  36.         from PyQt5.QtCore import PYQT_VERSION_STR

  37. 

  38.     from PyQt5.QtCore import qFatal, QT_VERSION, QT_VERSION_STR, qWarning, QDir, QSettings

  39.     from PyQt5.QtGui import QIcon

  40.     from PyQt5.QtWidgets import QFileDialog, QMessageBox

  41. 

  42. elif qt_config == 6:

  43.     from PyQt6.QtCore import qFatal, PYQT_VERSION_STR, QT_VERSION, QT_VERSION_STR, qWarning, QDir, QSettings

  44.     from PyQt6.QtGui import QIcon

  45.     from PyQt6.QtWidgets import QFileDialog, QMessageBox

  46. 

  47. # pylint: enable=import-error

  48. # pylint: disable=possibly-used-before-assignment

  49. 

  50. # ------------------------------------------------------------------------------------------------------------

  51. # Imports (Custom)

  52. 

  53. from carla_backend import (

  54.     CARLA_OS_64BIT,

  55.     CARLA_OS_HAIKU,

  56.     CARLA_OS_MAC,

  57.     CARLA_OS_WIN,

  58.     CARLA_VERSION_STRING,

  59.     MAX_DEFAULT_PARAMETERS,

  60.     ENGINE_PROCESS_MODE_MULTIPLE_CLIENTS,

  61.     ENGINE_PROCESS_MODE_PATCHBAY,

  62.     ENGINE_TRANSPORT_MODE_INTERNAL,

  63.     ENGINE_TRANSPORT_MODE_JACK,

  64. )

  65. 

  66. from utils import QSafeSettings

  67. import ast

  68. 

  69. # ------------------------------------------------------------------------------------------------------------

  70. # Config

  71. 

  72. # These will be modified during install

  73. X_LIBDIR_X = None

  74. X_DATADIR_X = None

  75. 

  76. # ------------------------------------------------------------------------------------------------------------

  77. # Platform specific stuff

  78. 

  79. if CARLA_OS_WIN:

  80.     WINDIR = os.getenv("WINDIR")

  81. 

  82. # ------------------------------------------------------------------------------------------------------------

  83. # Set TMP

  84. 

  85. envTMP = os.getenv("TMP")

  86. 

  87. if envTMP is None:

  88.     if CARLA_OS_WIN:

  89.         qWarning("TMP variable not set")

  90.     TMP = QDir.tempPath()

  91. else:

  92.     TMP = envTMP

  93. 

  94. if not os.path.exists(TMP):

  95.     qWarning("TMP does not exist")

  96.     TMP = "/"

  97. 

  98. del envTMP

  99. 

  100. # ------------------------------------------------------------------------------------------------------------

  101. # Set HOME

  102. 

  103. envHOME = os.getenv("HOME")

  104. 

  105. if envHOME is None:

  106.     if not CARLA_OS_WIN:

  107.         qWarning("HOME variable not set")

  108.     HOME = QDir.toNativeSeparators(QDir.homePath())

  109. else:

  110.     HOME = envHOME

  111. 

  112. if not os.path.exists(HOME):

  113.     qWarning("HOME does not exist")

  114.     HOME = TMP

  115. 

  116. del envHOME

  117. 

  118. # ------------------------------------------------------------------------------------------------------------

  119. # Set PATH

  120. 

  121. envPATH = os.getenv("PATH")

  122. 

  123. if envPATH is None:

  124.     qWarning("PATH variable not set")

  125.     if CARLA_OS_MAC:

  126.         PATH = ("/opt/local/bin", "/usr/local/bin", "/usr/bin", "/bin")

  127.     elif CARLA_OS_WIN:

  128.         PATH = (os.path.join(WINDIR, "system32"), WINDIR)

  129.     else:

  130.         PATH = ("/usr/local/bin", "/usr/bin", "/bin")

  131. else:

  132.     PATH = envPATH.split(os.pathsep)

  133. 

  134. del envPATH

  135. 

  136. # ------------------------------------------------------------------------------------------------------------

  137. # Static MIDI CC list

  138. 

  139. MIDI_CC_LIST = (

  140.     "01 [0x01] Modulation",

  141.     "02 [0x02] Breath",

  142.     "04 [0x04] Foot",

  143.     "05 [0x05] Portamento",

  144.     "07 [0x07] Volume",

  145.     "08 [0x08] Balance",

  146.     "10 [0x0A] Pan",

  147.     "11 [0x0B] Expression",

  148.     "12 [0x0C] FX Control 1",

  149.     "13 [0x0D] FX Control 2",

  150.     "16 [0x10] General Purpose 1",

  151.     "17 [0x11] General Purpose 2",

  152.     "18 [0x12] General Purpose 3",

  153.     "19 [0x13] General Purpose 4",

  154.     "70 [0x46] Control 1 [Variation]",

  155.     "71 [0x47] Control 2 [Timbre]",

  156.     "72 [0x48] Control 3 [Release]",

  157.     "73 [0x49] Control 4 [Attack]",

  158.     "74 [0x4A] Control 5 [Brightness]",

  159.     "75 [0x4B] Control 6 [Decay]",

  160.     "76 [0x4C] Control 7 [Vib Rate]",

  161.     "77 [0x4D] Control 8 [Vib Depth]",

  162.     "78 [0x4E] Control 9 [Vib Delay]",

  163.     "79 [0x4F] Control 10 [Undefined]",

  164.     "80 [0x50] General Purpose 5",

  165.     "81 [0x51] General Purpose 6",

  166.     "82 [0x52] General Purpose 7",

  167.     "83 [0x53] General Purpose 8",

  168.     "84 [0x54] Portamento Control",

  169.     "91 [0x5B] FX 1 Depth [Reverb]",

  170.     "92 [0x5C] FX 2 Depth [Tremolo]",

  171.     "93 [0x5D] FX 3 Depth [Chorus]",

  172.     "94 [0x5E] FX 4 Depth [Detune]",

  173.     "95 [0x5F] FX 5 Depth [Phaser]"

  174. )

  175. 

  176. MAX_MIDI_CC_LIST_ITEM = 95

  177. 

  178. # ------------------------------------------------------------------------------------------------------------

  179. # PatchCanvas defines

  180. 

  181. CANVAS_ANTIALIASING_SMALL = 1

  182. CANVAS_EYECANDY_SMALL     = 1

  183. 

  184. # ------------------------------------------------------------------------------------------------------------

  185. # Carla Settings keys

  186. 

  187. CARLA_KEY_MAIN_PROJECT_FOLDER   = "Main/ProjectFolder"   # str

  188. CARLA_KEY_MAIN_USE_PRO_THEME    = "Main/UseProTheme"     # bool

  189. CARLA_KEY_MAIN_PRO_THEME_COLOR  = "Main/ProThemeColor"   # str

  190. CARLA_KEY_MAIN_SKIN_TWEAKS      = "Main/SkinTweaks"      # str

  191. CARLA_KEY_MAIN_REFRESH_INTERVAL = "Main/RefreshInterval" # int

  192. CARLA_KEY_MAIN_CONFIRM_EXIT     = "Main/ConfirmExit"     # bool

  193. CARLA_KEY_MAIN_CLASSIC_SKIN     = "Main/ClassicSkin"     # bool

  194. CARLA_KEY_MAIN_SHOW_LOGS        = "Main/ShowLogs"        # bool

  195. CARLA_KEY_MAIN_SYSTEM_ICONS     = "Main/SystemIcons"     # bool

  196. CARLA_KEY_MAIN_EXPERIMENTAL     = "Main/Experimental"    # bool

  197. 

  198. CARLA_KEY_CANVAS_THEME             = "Canvas/Theme"           # str

  199. CARLA_KEY_CANVAS_SIZE              = "Canvas/Size"            # str "NxN"

  200. CARLA_KEY_CANVAS_USE_BEZIER_LINES  = "Canvas/UseBezierLines"  # bool

  201. CARLA_KEY_CANVAS_AUTO_HIDE_GROUPS  = "Canvas/AutoHideGroups"  # bool

  202. CARLA_KEY_CANVAS_AUTO_SELECT_ITEMS = "Canvas/AutoSelectItems" # bool

  203. CARLA_KEY_CANVAS_EYE_CANDY         = "Canvas/EyeCandy2"       # bool

  204. CARLA_KEY_CANVAS_FANCY_EYE_CANDY   = "Canvas/FancyEyeCandy"   # bool

  205. CARLA_KEY_CANVAS_USE_OPENGL        = "Canvas/UseOpenGL"       # bool

  206. CARLA_KEY_CANVAS_ANTIALIASING      = "Canvas/Antialiasing"    # enum

  207. CARLA_KEY_CANVAS_HQ_ANTIALIASING   = "Canvas/HQAntialiasing"  # bool

  208. CARLA_KEY_CANVAS_INLINE_DISPLAYS   = "Canvas/InlineDisplays"  # bool

  209. CARLA_KEY_CANVAS_FULL_REPAINTS     = "Canvas/FullRepaints"    # bool

  210. 

  211. CARLA_KEY_ENGINE_DRIVER_PREFIX         = "Engine/Driver-"

  212. CARLA_KEY_ENGINE_AUDIO_DRIVER          = "Engine/AudioDriver"         # str

  213. CARLA_KEY_ENGINE_AUDIO_DEVICE          = "Engine/AudioDevice"         # str

  214. CARLA_KEY_ENGINE_BUFFER_SIZE           = "Engine/BufferSize"          # int

  215. CARLA_KEY_ENGINE_SAMPLE_RATE           = "Engine/SampleRate"          # int

  216. CARLA_KEY_ENGINE_TRIPLE_BUFFER         = "Engine/TripleBuffer"        # bool

  217. CARLA_KEY_ENGINE_PROCESS_MODE          = "Engine/ProcessMode"         # enum

  218. CARLA_KEY_ENGINE_TRANSPORT_MODE        = "Engine/TransportMode"       # enum

  219. CARLA_KEY_ENGINE_TRANSPORT_EXTRA       = "Engine/TransportExtra"      # str

  220. CARLA_KEY_ENGINE_FORCE_STEREO          = "Engine/ForceStereo"         # bool

  221. CARLA_KEY_ENGINE_PREFER_PLUGIN_BRIDGES = "Engine/PreferPluginBridges" # bool

  222. CARLA_KEY_ENGINE_PREFER_UI_BRIDGES     = "Engine/PreferUiBridges"     # bool

  223. CARLA_KEY_ENGINE_MANAGE_UIS            = "Engine/ManageUIs"           # bool

  224. CARLA_KEY_ENGINE_UIS_ALWAYS_ON_TOP     = "Engine/UIsAlwaysOnTop"      # bool

  225. CARLA_KEY_ENGINE_MAX_PARAMETERS        = "Engine/MaxParameters"       # int

  226. CARLA_KEY_ENGINE_RESET_XRUNS           = "Engine/ResetXruns"          # bool

  227. CARLA_KEY_ENGINE_UI_BRIDGES_TIMEOUT    = "Engine/UiBridgesTimeout"    # int

  228. 

  229. CARLA_KEY_OSC_ENABLED          = "OSC/Enabled"

  230. CARLA_KEY_OSC_TCP_PORT_ENABLED = "OSC/TCPEnabled"

  231. CARLA_KEY_OSC_TCP_PORT_NUMBER  = "OSC/TCPNumber"

  232. CARLA_KEY_OSC_TCP_PORT_RANDOM  = "OSC/TCPRandom"

  233. CARLA_KEY_OSC_UDP_PORT_ENABLED = "OSC/UDPEnabled"

  234. CARLA_KEY_OSC_UDP_PORT_NUMBER  = "OSC/UDPNumber"

  235. CARLA_KEY_OSC_UDP_PORT_RANDOM  = "OSC/UDPRandom"

  236. 

  237. CARLA_KEY_PATHS_AUDIO = "Paths/Audio"

  238. CARLA_KEY_PATHS_MIDI  = "Paths/MIDI"

  239. 

  240. CARLA_KEY_PATHS_LADSPA = "Paths/LADSPA"

  241. CARLA_KEY_PATHS_DSSI   = "Paths/DSSI"

  242. CARLA_KEY_PATHS_LV2    = "Paths/LV2"

  243. CARLA_KEY_PATHS_VST2   = "Paths/VST2"

  244. CARLA_KEY_PATHS_VST3   = "Paths/VST3"

  245. CARLA_KEY_PATHS_CLAP   = "Paths/CLAP"

  246. CARLA_KEY_PATHS_SF2    = "Paths/SF2"

  247. CARLA_KEY_PATHS_SFZ    = "Paths/SFZ"

  248. CARLA_KEY_PATHS_JSFX   = "Paths/JSFX"

  249. 

  250. CARLA_KEY_WINE_EXECUTABLE      = "Wine/Executable"     # str

  251. CARLA_KEY_WINE_AUTO_PREFIX     = "Wine/AutoPrefix"     # bool

  252. CARLA_KEY_WINE_FALLBACK_PREFIX = "Wine/FallbackPrefix" # str

  253. CARLA_KEY_WINE_RT_PRIO_ENABLED = "Wine/RtPrioEnabled"  # bool

  254. CARLA_KEY_WINE_BASE_RT_PRIO    = "Wine/BaseRtPrio"     # int

  255. CARLA_KEY_WINE_SERVER_RT_PRIO  = "Wine/ServerRtPrio"   # int

  256. 

  257. CARLA_KEY_EXPERIMENTAL_PLUGIN_BRIDGES        = "Experimental/PluginBridges"       # bool

  258. CARLA_KEY_EXPERIMENTAL_WINE_BRIDGES          = "Experimental/WineBridges"         # bool

  259. CARLA_KEY_EXPERIMENTAL_JACK_APPS             = "Experimental/JackApplications"    # bool

  260. CARLA_KEY_EXPERIMENTAL_EXPORT_LV2            = "Experimental/ExportLV2"           # bool

  261. CARLA_KEY_EXPERIMENTAL_PREVENT_BAD_BEHAVIOUR = "Experimental/PreventBadBehaviour" # bool

  262. CARLA_KEY_EXPERIMENTAL_LOAD_LIB_GLOBAL       = "Experimental/LoadLibGlobal"       # bool

  263. 

  264. # if pro theme is on and color is black

  265. CARLA_KEY_CUSTOM_PAINTING = "UseCustomPainting" # bool

  266. 

  267. # ------------------------------------------------------------------------------------------------------------

  268. # Carla Settings defaults

  269. 

  270. # Main

  271. CARLA_DEFAULT_MAIN_PROJECT_FOLDER   = HOME

  272. CARLA_DEFAULT_MAIN_USE_PRO_THEME    = True

  273. CARLA_DEFAULT_MAIN_PRO_THEME_COLOR  = "Black"

  274. CARLA_DEFAULT_MAIN_REFRESH_INTERVAL = 20

  275. CARLA_DEFAULT_MAIN_CONFIRM_EXIT     = True

  276. CARLA_DEFAULT_MAIN_CLASSIC_SKIN     = False

  277. CARLA_DEFAULT_MAIN_SHOW_LOGS        = bool(not CARLA_OS_WIN)

  278. CARLA_DEFAULT_MAIN_SYSTEM_ICONS     = False

  279. CARLA_DEFAULT_MAIN_EXPERIMENTAL     = False

  280. CARLA_DEFAULT_MAIN_SKIN_TWEAKS      = "'ShowPan':0, 'ShowForth':0, 'WetVolPush':0, 'WetVolPushLed':1, 'Tooltips':0, 'MoreSpace':0, 'WetVolOnCompact':0, 'SymmetricArc':1, 'GapAuto':0, 'ColorFollow':0, 'ShortenLabels':1, 'ButtonHaveLed':1, 'ColoredNeon':1, 'HighContrast':0, 'ShowDisabled':0, 'ShowOutputs':1, 'ShowButtons':1, 'Button3Pos':1, 'TwoLineLabels':0, 'GapMin':0, 'GapMax':100, 'ColorFrom':-0.1, 'ColorSpan':0.4, 'Auto7segSize':0, 'Auto7segWidth':1, 'ShowReload':0, 'ShowPrograms':0, 'ShowMidiPrograms':0, 'ShowProgramsOnCompact':0, 'ShowMidiProgramsOnCompact':0, "

  281. 

  282. # Canvas

  283. CARLA_DEFAULT_CANVAS_THEME             = "Modern Dark"

  284. CARLA_DEFAULT_CANVAS_SIZE              = "3100x2400"

  285. CARLA_DEFAULT_CANVAS_SIZE_WIDTH        = 3100

  286. CARLA_DEFAULT_CANVAS_SIZE_HEIGHT       = 2400

  287. CARLA_DEFAULT_CANVAS_USE_BEZIER_LINES  = True

  288. CARLA_DEFAULT_CANVAS_AUTO_HIDE_GROUPS  = True

  289. CARLA_DEFAULT_CANVAS_AUTO_SELECT_ITEMS = False

  290. CARLA_DEFAULT_CANVAS_EYE_CANDY         = True

  291. CARLA_DEFAULT_CANVAS_FANCY_EYE_CANDY   = False

  292. CARLA_DEFAULT_CANVAS_USE_OPENGL        = False

  293. CARLA_DEFAULT_CANVAS_ANTIALIASING      = CANVAS_ANTIALIASING_SMALL

  294. CARLA_DEFAULT_CANVAS_HQ_ANTIALIASING   = False

  295. CARLA_DEFAULT_CANVAS_INLINE_DISPLAYS   = False

  296. CARLA_DEFAULT_CANVAS_FULL_REPAINTS     = False

  297. 

  298. # Engine

  299. CARLA_DEFAULT_FORCE_STEREO          = False

  300. CARLA_DEFAULT_PREFER_PLUGIN_BRIDGES = False

  301. CARLA_DEFAULT_PREFER_UI_BRIDGES     = True

  302. CARLA_DEFAULT_MANAGE_UIS            = True

  303. CARLA_DEFAULT_UIS_ALWAYS_ON_TOP     = False

  304. CARLA_DEFAULT_MAX_PARAMETERS        = MAX_DEFAULT_PARAMETERS

  305. CARLA_DEFAULT_RESET_XRUNS           = False

  306. CARLA_DEFAULT_UI_BRIDGES_TIMEOUT    = 4000

  307. 

  308. CARLA_DEFAULT_AUDIO_BUFFER_SIZE     = 512

  309. CARLA_DEFAULT_AUDIO_SAMPLE_RATE     = 44100

  310. CARLA_DEFAULT_AUDIO_TRIPLE_BUFFER   = False

  311. 

  312. if CARLA_OS_HAIKU:

  313.     CARLA_DEFAULT_AUDIO_DRIVER = "SDL"

  314. elif CARLA_OS_MAC:

  315.     CARLA_DEFAULT_AUDIO_DRIVER = "CoreAudio"

  316. elif CARLA_OS_WIN:

  317.     CARLA_DEFAULT_AUDIO_DRIVER = "Windows Audio"

  318. elif os.path.exists("/usr/bin/jackd") or os.path.exists("/usr/bin/jackdbus") or os.path.exists("/usr/bin/pw-jack"):

  319.     CARLA_DEFAULT_AUDIO_DRIVER = "JACK"

  320. else:

  321.     CARLA_DEFAULT_AUDIO_DRIVER = "PulseAudio"

  322. 

  323. if CARLA_DEFAULT_AUDIO_DRIVER == "JACK":

  324.     CARLA_DEFAULT_PROCESS_MODE   = ENGINE_PROCESS_MODE_MULTIPLE_CLIENTS

  325.     CARLA_DEFAULT_TRANSPORT_MODE = ENGINE_TRANSPORT_MODE_JACK

  326. else:

  327.     CARLA_DEFAULT_PROCESS_MODE   = ENGINE_PROCESS_MODE_PATCHBAY

  328.     CARLA_DEFAULT_TRANSPORT_MODE = ENGINE_TRANSPORT_MODE_INTERNAL

  329. 

  330. # OSC

  331. CARLA_DEFAULT_OSC_ENABLED = not (CARLA_OS_MAC or CARLA_OS_WIN)

  332. CARLA_DEFAULT_OSC_TCP_PORT_ENABLED = True

  333. CARLA_DEFAULT_OSC_TCP_PORT_NUMBER  = 22752

  334. CARLA_DEFAULT_OSC_TCP_PORT_RANDOM  = False

  335. CARLA_DEFAULT_OSC_UDP_PORT_ENABLED = True

  336. CARLA_DEFAULT_OSC_UDP_PORT_NUMBER  = 22752

  337. CARLA_DEFAULT_OSC_UDP_PORT_RANDOM  = False

  338. 

  339. # Wine

  340. CARLA_DEFAULT_WINE_EXECUTABLE      = "wine"

  341. CARLA_DEFAULT_WINE_AUTO_PREFIX     = True

  342. CARLA_DEFAULT_WINE_FALLBACK_PREFIX = os.path.expanduser("~/.wine")

  343. CARLA_DEFAULT_WINE_RT_PRIO_ENABLED = True

  344. CARLA_DEFAULT_WINE_BASE_RT_PRIO    = 15

  345. CARLA_DEFAULT_WINE_SERVER_RT_PRIO  = 10

  346. 

  347. # Experimental

  348. CARLA_DEFAULT_EXPERIMENTAL_PLUGIN_BRIDGES        = False

  349. CARLA_DEFAULT_EXPERIMENTAL_WINE_BRIDGES          = False

  350. CARLA_DEFAULT_EXPERIMENTAL_JACK_APPS             = False

  351. CARLA_DEFAULT_EXPERIMENTAL_LV2_EXPORT            = False

  352. CARLA_DEFAULT_EXPERIMENTAL_PREVENT_BAD_BEHAVIOUR = False

  353. CARLA_DEFAULT_EXPERIMENTAL_LOAD_LIB_GLOBAL       = False

  354. 

  355. # ------------------------------------------------------------------------------------------------------------

  356. # Default File Folders

  357. 

  358. CARLA_DEFAULT_FILE_PATH_AUDIO = []

  359. CARLA_DEFAULT_FILE_PATH_MIDI  = []

  360. 

  361. # ------------------------------------------------------------------------------------------------------------

  362. # Default Plugin Folders (get)

  363. 

  364. DEFAULT_LADSPA_PATH = ""

  365. DEFAULT_DSSI_PATH   = ""

  366. DEFAULT_LV2_PATH    = ""

  367. DEFAULT_VST2_PATH   = ""

  368. DEFAULT_VST3_PATH   = ""

  369. DEFAULT_CLAP_PATH   = ""

  370. DEFAULT_SF2_PATH    = ""

  371. DEFAULT_SFZ_PATH    = ""

  372. DEFAULT_JSFX_PATH   = ""

  373. 

  374. if CARLA_OS_WIN:

  375.     splitter = ";"

  376. 

  377.     APPDATA = os.getenv("APPDATA")

  378.     LOCALAPPDATA = os.getenv("LOCALAPPDATA", APPDATA)

  379.     PROGRAMFILES = os.getenv("PROGRAMFILES")

  380.     PROGRAMFILESx86 = os.getenv("PROGRAMFILES(x86)")

  381.     COMMONPROGRAMFILES = os.getenv("COMMONPROGRAMFILES")

  382.     COMMONPROGRAMFILESx86 = os.getenv("COMMONPROGRAMFILES(x86)")

  383. 

  384.     # Small integrity tests

  385.     if not APPDATA:

  386.         qFatal("APPDATA variable not set, cannot continue")

  387.         sys.exit(1)

  388. 

  389.     if not PROGRAMFILES:

  390.         qFatal("PROGRAMFILES variable not set, cannot continue")

  391.         sys.exit(1)

  392. 

  393.     if not COMMONPROGRAMFILES:

  394.         qFatal("COMMONPROGRAMFILES variable not set, cannot continue")

  395.         sys.exit(1)

  396. 

  397.     DEFAULT_LADSPA_PATH  = APPDATA + "\\LADSPA"

  398.     DEFAULT_LADSPA_PATH += ";" + PROGRAMFILES + "\\LADSPA"

  399. 

  400.     DEFAULT_DSSI_PATH    = APPDATA + "\\DSSI"

  401.     DEFAULT_DSSI_PATH   += ";" + PROGRAMFILES + "\\DSSI"

  402. 

  403.     DEFAULT_LV2_PATH     = APPDATA + "\\LV2"

  404.     DEFAULT_LV2_PATH    += ";" + COMMONPROGRAMFILES + "\\LV2"

  405. 

  406.     DEFAULT_VST2_PATH    = PROGRAMFILES + "\\VstPlugins"

  407.     DEFAULT_VST2_PATH   += ";" + PROGRAMFILES + "\\Steinberg\\VstPlugins"

  408. 

  409.     DEFAULT_JSFX_PATH    = APPDATA + "\\REAPER\\Effects"

  410.     #DEFAULT_JSFX_PATH   += ";" + PROGRAMFILES + "\\REAPER\\InstallData\\Effects"

  411. 

  412.     if CARLA_OS_64BIT:

  413.         DEFAULT_VST2_PATH  += ";" + COMMONPROGRAMFILES + "\\VST2"

  414. 

  415.     DEFAULT_VST3_PATH    = COMMONPROGRAMFILES + "\\VST3"

  416.     DEFAULT_VST3_PATH   += ";" + LOCALAPPDATA + "\\Programs\\Common\\VST3"

  417. 

  418.     DEFAULT_CLAP_PATH    = COMMONPROGRAMFILES + "\\CLAP"

  419.     DEFAULT_CLAP_PATH   += ";" + LOCALAPPDATA + "\\Programs\\Common\\CLAP"

  420. 

  421.     DEFAULT_SF2_PATH     = APPDATA + "\\SF2"

  422.     DEFAULT_SFZ_PATH     = APPDATA + "\\SFZ"

  423. 

  424.     if PROGRAMFILESx86:

  425.         DEFAULT_LADSPA_PATH += ";" + PROGRAMFILESx86 + "\\LADSPA"

  426.         DEFAULT_DSSI_PATH   += ";" + PROGRAMFILESx86 + "\\DSSI"

  427.         DEFAULT_VST2_PATH   += ";" + PROGRAMFILESx86 + "\\VstPlugins"

  428.         DEFAULT_VST2_PATH   += ";" + PROGRAMFILESx86 + "\\Steinberg\\VstPlugins"

  429.         #DEFAULT_JSFX_PATH   += ";" + PROGRAMFILESx86 + "\\REAPER\\InstallData\\Effects"

  430. 

  431.     if COMMONPROGRAMFILESx86:

  432.         DEFAULT_VST3_PATH   += COMMONPROGRAMFILESx86 + "\\VST3"

  433.         DEFAULT_CLAP_PATH   += COMMONPROGRAMFILESx86 + "\\CLAP"

  434. 

  435. elif CARLA_OS_HAIKU:

  436.     splitter = ":"

  437. 

  438.     DEFAULT_LADSPA_PATH  = HOME + "/.ladspa"

  439.     DEFAULT_LADSPA_PATH += ":/system/add-ons/media/ladspaplugins"

  440.     DEFAULT_LADSPA_PATH += ":/system/lib/ladspa"

  441. 

  442.     DEFAULT_DSSI_PATH    = HOME + "/.dssi"

  443.     DEFAULT_DSSI_PATH   += ":/system/add-ons/media/dssiplugins"

  444.     DEFAULT_DSSI_PATH   += ":/system/lib/dssi"

  445. 

  446.     DEFAULT_LV2_PATH     = HOME + "/.lv2"

  447.     DEFAULT_LV2_PATH    += ":/system/add-ons/media/lv2plugins"

  448. 

  449.     DEFAULT_VST2_PATH    = HOME + "/.vst"

  450.     DEFAULT_VST2_PATH   += ":/system/add-ons/media/vstplugins"

  451. 

  452.     DEFAULT_VST3_PATH    = HOME + "/.vst3"

  453.     DEFAULT_VST3_PATH   += ":/system/add-ons/media/vst3plugins"

  454. 

  455.     DEFAULT_CLAP_PATH    = HOME + "/.clap"

  456.     DEFAULT_CLAP_PATH   += ":/system/add-ons/media/clapplugins"

  457. 

  458. elif CARLA_OS_MAC:

  459.     splitter = ":"

  460. 

  461.     DEFAULT_LADSPA_PATH  = HOME + "/Library/Audio/Plug-Ins/LADSPA"

  462.     DEFAULT_LADSPA_PATH += ":/Library/Audio/Plug-Ins/LADSPA"

  463. 

  464.     DEFAULT_DSSI_PATH    = HOME + "/Library/Audio/Plug-Ins/DSSI"

  465.     DEFAULT_DSSI_PATH   += ":/Library/Audio/Plug-Ins/DSSI"

  466. 

  467.     DEFAULT_LV2_PATH     = HOME + "/Library/Audio/Plug-Ins/LV2"

  468.     DEFAULT_LV2_PATH    += ":/Library/Audio/Plug-Ins/LV2"

  469. 

  470.     DEFAULT_VST2_PATH    = HOME + "/Library/Audio/Plug-Ins/VST"

  471.     DEFAULT_VST2_PATH   += ":/Library/Audio/Plug-Ins/VST"

  472. 

  473.     DEFAULT_VST3_PATH    = HOME + "/Library/Audio/Plug-Ins/VST3"

  474.     DEFAULT_VST3_PATH   += ":/Library/Audio/Plug-Ins/VST3"

  475. 

  476.     DEFAULT_CLAP_PATH    = HOME + "/Library/Audio/Plug-Ins/CLAP"

  477.     DEFAULT_CLAP_PATH   += ":/Library/Audio/Plug-Ins/CLAP"

  478. 

  479.     DEFAULT_JSFX_PATH    = HOME + "/Library/Application Support/REAPER/Effects"

  480.     #DEFAULT_JSFX_PATH   += ":/Applications/REAPER.app/Contents/InstallFiles/Effects"

  481. 

  482. else:

  483.     splitter = ":"

  484. 

  485.     CONFIG_HOME = os.getenv("XDG_CONFIG_HOME", HOME + "/.config")

  486. 

  487.     DEFAULT_LADSPA_PATH  = HOME + "/.ladspa"

  488.     DEFAULT_LADSPA_PATH += ":/usr/lib/ladspa"

  489.     DEFAULT_LADSPA_PATH += ":/usr/local/lib/ladspa"

  490. 

  491.     DEFAULT_DSSI_PATH    = HOME + "/.dssi"

  492.     DEFAULT_DSSI_PATH   += ":/usr/lib/dssi"

  493.     DEFAULT_DSSI_PATH   += ":/usr/local/lib/dssi"

  494. 

  495.     DEFAULT_LV2_PATH     = HOME + "/.lv2"

  496.     DEFAULT_LV2_PATH    += ":/usr/lib/lv2"

  497.     DEFAULT_LV2_PATH    += ":/usr/local/lib/lv2"

  498. 

  499.     DEFAULT_VST2_PATH    = HOME + "/.vst"

  500.     DEFAULT_VST2_PATH   += ":/usr/lib/vst"

  501.     DEFAULT_VST2_PATH   += ":/usr/local/lib/vst"

  502. 

  503.     DEFAULT_VST2_PATH   += HOME + "/.lxvst"

  504.     DEFAULT_VST2_PATH   += ":/usr/lib/lxvst"

  505.     DEFAULT_VST2_PATH   += ":/usr/local/lib/lxvst"

  506. 

  507.     DEFAULT_VST3_PATH    = HOME + "/.vst3"

  508.     DEFAULT_VST3_PATH   += ":/usr/lib/vst3"

  509.     DEFAULT_VST3_PATH   += ":/usr/local/lib/vst3"

  510. 

  511.     DEFAULT_CLAP_PATH    = HOME + "/.clap"

  512.     DEFAULT_CLAP_PATH   += ":/usr/lib/clap"

  513.     DEFAULT_CLAP_PATH   += ":/usr/local/lib/clap"

  514. 

  515.     DEFAULT_SF2_PATH     = HOME + "/.sounds/sf2"

  516.     DEFAULT_SF2_PATH    += ":" + HOME + "/.sounds/sf3"

  517.     DEFAULT_SF2_PATH    += ":/usr/share/sounds/sf2"

  518.     DEFAULT_SF2_PATH    += ":/usr/share/sounds/sf3"

  519.     DEFAULT_SF2_PATH    += ":/usr/share/soundfonts"

  520. 

  521.     DEFAULT_SFZ_PATH     = HOME + "/.sounds/sfz"

  522.     DEFAULT_SFZ_PATH    += ":/usr/share/sounds/sfz"

  523. 

  524.     DEFAULT_JSFX_PATH    = CONFIG_HOME + "/REAPER/Effects"

  525.     #DEFAULT_JSFX_PATH   += ":" + "/opt/REAPER/InstallData/Effects"

  526. 

  527. if not CARLA_OS_WIN:

  528.     winePrefix = os.getenv("WINEPREFIX")

  529. 

  530.     if not winePrefix:

  531.         winePrefix = HOME + "/.wine"

  532. 

  533.     DEFAULT_VST2_PATH += ":" + winePrefix + "/drive_c/Program Files/VstPlugins"

  534.     DEFAULT_VST2_PATH += ":" + winePrefix + "/drive_c/Program Files/VSTPlugins"

  535.     DEFAULT_VST2_PATH += ":" + winePrefix + "/drive_c/Program Files/Steinberg/VstPlugins"

  536.     DEFAULT_VST2_PATH += ":" + winePrefix + "/drive_c/Program Files/Steinberg/VSTPlugins"

  537.     DEFAULT_VST2_PATH += ":" + winePrefix + "/drive_c/Program Files/Common Files/VST2"

  538.     DEFAULT_VST3_PATH += ":" + winePrefix + "/drive_c/Program Files/Common Files/VST3"

  539.     DEFAULT_CLAP_PATH += ":" + winePrefix + "/drive_c/Program Files/Common Files/CLAP"

  540. 

  541.     if CARLA_OS_64BIT:

  542.         DEFAULT_VST2_PATH += ":" + winePrefix + "/drive_c/Program Files (x86)/VstPlugins"

  543.         DEFAULT_VST2_PATH += ":" + winePrefix + "/drive_c/Program Files (x86)/VSTPlugins"

  544.         DEFAULT_VST2_PATH += ":" + winePrefix + "/drive_c/Program Files (x86)/Steinberg/VstPlugins"

  545.         DEFAULT_VST2_PATH += ":" + winePrefix + "/drive_c/Program Files (x86)/Steinberg/VSTPlugins"

  546.         DEFAULT_VST3_PATH += ":" + winePrefix + "/drive_c/Program Files (x86)/Common Files/VST3"

  547.         DEFAULT_CLAP_PATH += ":" + winePrefix + "/drive_c/Program Files (x86)/Common Files/CLAP"

  548. 

  549.     del winePrefix

  550. 

  551. # ------------------------------------------------------------------------------------------------------------

  552. # Default Plugin Folders (set)

  553. 

  554. readEnvVars = True

  555. 

  556. if CARLA_OS_WIN:

  557.     # Check if running Wine. If yes, ignore env vars

  558.     # pylint: disable=import-error

  559.     from winreg import ConnectRegistry, OpenKey, CloseKey, HKEY_CURRENT_USER

  560.     # pylint: enable=import-error

  561.     _reg = ConnectRegistry(None, HKEY_CURRENT_USER)

  562. 

  563.     try:

  564.         _key = OpenKey(_reg, r"SOFTWARE\Wine")

  565.         CloseKey(_key)

  566.         del _key

  567.         readEnvVars = False

  568.     except:

  569.         pass

  570. 

  571.     CloseKey(_reg)

  572.     del _reg

  573. 

  574. if readEnvVars:

  575.     CARLA_DEFAULT_LADSPA_PATH = os.getenv("LADSPA_PATH", DEFAULT_LADSPA_PATH).split(splitter)

  576.     CARLA_DEFAULT_DSSI_PATH   = os.getenv("DSSI_PATH",   DEFAULT_DSSI_PATH).split(splitter)

  577.     CARLA_DEFAULT_LV2_PATH    = os.getenv("LV2_PATH",    DEFAULT_LV2_PATH).split(splitter)

  578.     CARLA_DEFAULT_VST2_PATH   = os.getenv("VST_PATH",    DEFAULT_VST2_PATH).split(splitter)

  579.     CARLA_DEFAULT_VST3_PATH   = os.getenv("VST3_PATH",   DEFAULT_VST3_PATH).split(splitter)

  580.     CARLA_DEFAULT_CLAP_PATH   = os.getenv("CLAP_PATH",   DEFAULT_CLAP_PATH).split(splitter)

  581.     CARLA_DEFAULT_SF2_PATH    = os.getenv("SF2_PATH",    DEFAULT_SF2_PATH).split(splitter)

  582.     CARLA_DEFAULT_SFZ_PATH    = os.getenv("SFZ_PATH",    DEFAULT_SFZ_PATH).split(splitter)

  583.     CARLA_DEFAULT_JSFX_PATH   = os.getenv("JSFX_PATH",   DEFAULT_JSFX_PATH).split(splitter)

  584. 

  585. else:

  586.     CARLA_DEFAULT_LADSPA_PATH = DEFAULT_LADSPA_PATH.split(splitter)

  587.     CARLA_DEFAULT_DSSI_PATH   = DEFAULT_DSSI_PATH.split(splitter)

  588.     CARLA_DEFAULT_LV2_PATH    = DEFAULT_LV2_PATH.split(splitter)

  589.     CARLA_DEFAULT_VST2_PATH   = DEFAULT_VST2_PATH.split(splitter)

  590.     CARLA_DEFAULT_VST3_PATH   = DEFAULT_VST3_PATH.split(splitter)

  591.     CARLA_DEFAULT_CLAP_PATH   = DEFAULT_CLAP_PATH.split(splitter)

  592.     CARLA_DEFAULT_SF2_PATH    = DEFAULT_SF2_PATH.split(splitter)

  593.     CARLA_DEFAULT_SFZ_PATH    = DEFAULT_SFZ_PATH.split(splitter)

  594.     CARLA_DEFAULT_JSFX_PATH   = DEFAULT_JSFX_PATH.split(splitter)

  595. 

  596. # ------------------------------------------------------------------------------------------------------------

  597. # Default Plugin Folders (cleanup)

  598. 

  599. del DEFAULT_LADSPA_PATH

  600. del DEFAULT_DSSI_PATH

  601. del DEFAULT_LV2_PATH

  602. del DEFAULT_VST2_PATH

  603. del DEFAULT_VST3_PATH

  604. del DEFAULT_CLAP_PATH

  605. del DEFAULT_SF2_PATH

  606. del DEFAULT_SFZ_PATH

  607. 

  608. # ------------------------------------------------------------------------------------------------------------

  609. # Global Carla object

  610. 

  611. class CarlaObject():

  612.     def __init__(self):

  613.         self.cnprefix = ""    # Client name prefix

  614.         self.gui      = None  # Host Window

  615.         self.nogui    = False # Skip UI

  616.         self.term     = False # Terminated by OS signal

  617.         self.felib    = None  # Frontend lib object

  618.         self.utils    = None  # Utils object

  619. 

  620. gCarla = CarlaObject()

  621. 

  622. # ------------------------------------------------------------------------------------------------------------

  623. # Set CWD

  624. 

  625. CWD = sys.path[0]

  626. 

  627. if not CWD:

  628.     CWD = os.path.dirname(sys.argv[0])

  629. 

  630. # make it work with cxfreeze

  631. if os.path.isfile(CWD):

  632.     CWD = os.path.dirname(CWD)

  633.     if CWD.endswith("/lib"):

  634.         CWD = CWD.rsplit("/lib",1)[0]

  635.     CXFREEZE = True

  636.     if not CARLA_OS_WIN:

  637.         os.environ['CARLA_MAGIC_FILE'] = os.path.join(CWD, "magic.mgc")

  638. else:

  639.     CXFREEZE = False

  640. 

  641. # ------------------------------------------------------------------------------------------------------------

  642. # Set DLL_EXTENSION

  643. 

  644. if CARLA_OS_WIN:

  645.     DLL_EXTENSION = "dll"

  646. elif CARLA_OS_MAC:

  647.     DLL_EXTENSION = "dylib"

  648. else:

  649.     DLL_EXTENSION = "so"

  650. 

  651. # ------------------------------------------------------------------------------------------------------------

  652. # Find decimal points for a parameter, using step and stepSmall

  653. 

  654. def countDecimalPoints(step, stepSmall):

  655.     if (stepSmall >= 1.0) or (step <= 0) or (stepSmall <= 0):

  656.         return 0

  657.     if step >= 1.0:

  658.         return 2

  659. 

  660. # OLD

  661.     # count = 0

  662.     # value = fmod(abs(step), 1)

  663.     # while 0.0001 < value < 0.999 and count < 6:

  664.     #     value = fmod(value*10, 1)

  665.     #     count += 1

  666.     #

  667.     # return count

  668. 

  669. # NEW: Looks like better handling of small values.

  670.     return -int(log10(stepSmall)) + 2

  671. 

  672. # ------------------------------------------------------------------------------------------------------------

  673. # Check if a value is a number (float support)

  674. 

  675. def isNumber(value):

  676.     try:

  677.         float(value)

  678.         return True

  679.     except:

  680.         return False

  681. 

  682. # ------------------------------------------------------------------------------------------------------------

  683. # Convert a value to a list

  684. 

  685. def toList(value):

  686.     if value is None:

  687.         return []

  688.     if not isinstance(value, list):

  689.         return [value]

  690.     return value

  691. 

  692. # ------------------------------------------------------------------------------------------------------------

  693. # Get Icon from user theme, using our own as backup (Oxygen)

  694. 

  695. def getIcon(icon, size, qrcformat):

  696.     return QIcon.fromTheme(icon, QIcon(":/%ix%i/%s.%s" % (size, size, icon, qrcformat)))

  697. 

  698. # ------------------------------------------------------------------------------------------------------------

  699. # Handle some basic command-line arguments shared between all carla variants

  700. 

  701. def handleInitialCommandLineArguments(file):

  702.     initName  = os.path.basename(file) if (file is not None and os.path.dirname(file) in PATH) else sys.argv[0]

  703.     libPrefix = None

  704.     readPrefixNext = False

  705. 

  706.     for arg in sys.argv[1:]:

  707.         if arg.startswith("--with-appname="):

  708.             initName = os.path.basename(arg.replace("--with-appname=", ""))

  709. 

  710.         elif arg.startswith("--with-libprefix="):

  711.             libPrefix = arg.replace("--with-libprefix=", "")

  712. 

  713.         elif arg.startswith("--osc-gui="):

  714.             gCarla.nogui = int(arg.replace("--osc-gui=", ""))

  715. 

  716.         elif arg.startswith("--cnprefix="):

  717.             gCarla.cnprefix = arg.replace("--cnprefix=", "")

  718. 

  719.         elif arg == "--cnprefix":

  720.             readPrefixNext = True

  721. 

  722.         elif arg == "--gdb":

  723.             pass

  724. 

  725.         elif arg in ("-n", "--n", "-no-gui", "--no-gui", "-nogui", "--nogui"):

  726.             gCarla.nogui = True

  727. 

  728.         elif CARLA_OS_MAC and arg.startswith("-psn_"):

  729.             pass

  730. 

  731.         elif arg in ("-h", "--h", "-help", "--help"):

  732.             print("Usage: %s [OPTION]... [FILE|URL]" % initName)

  733.             print("")

  734.             print(" where FILE can be a Carla project or preset file to be loaded, or URL if using Carla-Control")

  735.             print("")

  736.             print(" and OPTION can be one or more of the following:")

  737.             print("")

  738.             print("    --cnprefix\t Set a prefix for client names in multi-client mode.")

  739.             if isinstance(gCarla.nogui, bool):

  740.                 if X_LIBDIR_X is not None:

  741.                     print("    --gdb     \t Run Carla inside gdb.")

  742.                 print(" -n,--no-gui  \t Run Carla headless, don't show UI.")

  743.                 print("")

  744.             print(" -h,--help    \t Print this help text and exit.")

  745.             print(" -v,--version \t Print version information and exit.")

  746.             print("")

  747. 

  748.             if not isinstance(gCarla.nogui, bool):

  749.                 print("NOTE: when using %s the FILE is only valid the first time the backend is started" % initName)

  750.                 sys.exit(1)

  751. 

  752.             sys.exit(0)

  753. 

  754.         elif arg in ("-v", "--v", "-version", "--version"):

  755.             pathBinaries, pathResources = getPaths(libPrefix)

  756. 

  757.             print("Using Carla version %s" % CARLA_VERSION_STRING)

  758.             print("  Python version: %s" % sys.version.split(" ",1)[0])

  759.             print("  Qt version:     %s" % QT_VERSION_STR)

  760.             print("  PyQt version:   %s" % PYQT_VERSION_STR)

  761.             print("  Binary dir:     %s" % pathBinaries)

  762.             print("  Resources dir:  %s" % pathResources)

  763. 

  764.             sys.exit(1 if gCarla.nogui else 0)

  765. 

  766.         elif readPrefixNext:

  767.             readPrefixNext = False

  768.             gCarla.cnprefix = arg

  769. 

  770.     if gCarla.nogui and not isinstance(gCarla.nogui, bool):

  771.         if os.fork():

  772.             # pylint: disable=protected-access

  773.             os._exit(0)

  774.             # pylint: enable=protected-access

  775.         else:

  776.             os.setsid()

  777. 

  778.     return (initName, libPrefix)

  779. 

  780. # ------------------------------------------------------------------------------------------------------------

  781. # Get initial project file (as passed in the command-line parameters)

  782. 

  783. def getInitialProjectFile(skipExistCheck = False):

  784.     # NOTE: PyQt mishandles unicode characters, we directly use sys.argv instead of qApp->arguments()

  785.     # see https://riverbankcomputing.com/pipermail/pyqt/2015-January/035395.html

  786.     args = sys.argv[1:]

  787.     readPrefixNext = False

  788.     for arg in args:

  789.         if readPrefixNext:

  790.             readPrefixNext = False

  791.             continue

  792.         if arg.startswith("--cnprefix="):

  793.             continue

  794.         if arg.startswith("--osc-gui="):

  795.             continue

  796.         if arg.startswith("--with-appname="):

  797.             continue

  798.         if arg.startswith("--with-libprefix="):

  799.             continue

  800.         if arg == "--cnprefix":

  801.             readPrefixNext = True

  802.             continue

  803.         if arg in ("-n", "--n", "-no-gui", "--no-gui", "-nogui", "--nogui", "--gdb"):

  804.             continue

  805.         if CARLA_OS_MAC and arg.startswith("-psn_"):

  806.             continue

  807.         arg = os.path.expanduser(arg)

  808.         if skipExistCheck or os.path.exists(arg):

  809.             return arg

  810. 

  811.     return None

  812. 

  813. # ------------------------------------------------------------------------------------------------------------

  814. # Get paths (binaries, resources)

  815. 

  816. def getPaths(libPrefix = None):

  817.     CWDl = CWD.lower()

  818. 

  819.     # adjust for special distros

  820.     libdir  = os.path.basename(os.path.normpath(X_LIBDIR_X))  if X_LIBDIR_X  else "lib"

  821.     datadir = os.path.basename(os.path.normpath(X_DATADIR_X)) if X_DATADIR_X else "share"

  822. 

  823.     # standalone, installed system-wide linux

  824.     if libPrefix is not None:

  825.         pathBinaries  = os.path.join(libPrefix, libdir, "carla")

  826.         pathResources = os.path.join(libPrefix, datadir, "carla", "resources")

  827. 

  828.     # standalone, local source

  829.     elif CWDl.endswith("frontend"):

  830.         pathBinaries  = os.path.abspath(os.path.join(CWD, "..", "..", "bin"))

  831.         pathResources = os.path.join(pathBinaries, "resources")

  832. 

  833.     # plugin

  834.     elif CWDl.endswith("resources"):

  835.         # installed system-wide linux

  836.         if CWDl.endswith("/share/carla/resources"):

  837.             pathBinaries  = os.path.abspath(os.path.join(CWD, "..", "..", "..", libdir, "carla"))

  838.             pathResources = CWD

  839. 

  840.         # local source

  841.         elif CWDl.endswith("native-plugins%sresources" % os.sep):

  842.             pathBinaries  = os.path.abspath(os.path.join(CWD, "..", "..", "..", "bin"))

  843.             pathResources = CWD

  844. 

  845.         # other

  846.         else:

  847.             pathBinaries  = os.path.abspath(os.path.join(CWD, ".."))

  848.             pathResources = CWD

  849. 

  850.     # everything else

  851.     else:

  852.         pathBinaries  = CWD

  853.         pathResources = os.path.join(pathBinaries, "resources")

  854. 

  855.     return (pathBinaries, pathResources)

  856. 

  857. # ------------------------------------------------------------------------------------------------------------

  858. # Signal handler

  859. # TODO move to carla_host.py or something

  860. 

  861. def signalHandler(sig, frame):

  862.     if sig in (SIGINT, SIGTERM):

  863.         gCarla.term = True

  864.         if gCarla.gui is not None:

  865.             gCarla.gui.SIGTERM.emit()

  866. 

  867.     elif haveSIGUSR1 and sig == SIGUSR1:

  868.         if gCarla.gui is not None:

  869.             gCarla.gui.SIGUSR1.emit()

  870. 

  871. def setUpSignals():

  872.     signal(SIGINT,  signalHandler)

  873.     signal(SIGTERM, signalHandler)

  874. 

  875.     if not haveSIGUSR1:

  876.         return

  877. 

  878.     signal(SIGUSR1, signalHandler)

  879. 

  880. # ------------------------------------------------------------------------------------------------------------

  881. # QLineEdit and QPushButton combo

  882. 

  883. def getAndSetPath(parent, lineEdit):

  884.     newPath = QFileDialog.getExistingDirectory(parent, parent.tr("Set Path"), lineEdit.text(), QFileDialog.ShowDirsOnly)

  885.     if newPath:

  886.         lineEdit.setText(newPath)

  887.     return newPath

  888. 

  889. # ------------------------------------------------------------------------------------------------------------

  890. # Backwards-compatible horizontalAdvance/width call, depending on Qt version

  891. 

  892. def fontMetricsHorizontalAdvance(fontMetrics, string):

  893.     if QT_VERSION >= 0x50b00:

  894.         return fontMetrics.horizontalAdvance(string)

  895.     return fontMetrics.width(string)

  896. 

  897. # ------------------------------------------------------------------------------------------------------------

  898. # Custom QMessageBox which resizes itself to fit text

  899. 

  900. class QMessageBoxWithBetterWidth(QMessageBox):

  901.     def __init__(self, parent):

  902.         QMessageBox.__init__(self, parent)

  903. 

  904.     def showEvent(self, event):

  905.         fontMetrics = self.fontMetrics()

  906. 

  907.         lines = self.text().strip().split("\n") + self.informativeText().strip().split("\n")

  908. 

  909.         if lines:

  910.             width = 0

  911. 

  912.             for line in lines:

  913.                 width = max(fontMetricsHorizontalAdvance(fontMetrics, line), width)

  914. 

  915.             self.layout().setColumnMinimumWidth(2, width + 12)

  916. 

  917.         QMessageBox.showEvent(self, event)

  918. 

  919. # ------------------------------------------------------------------------------------------------------------

  920. # Custom MessageBox

  921. 

  922. # pylint: disable=too-many-arguments

  923. def CustomMessageBox(parent, icon, title, text,

  924.                      extraText="",

  925.                      buttons=QMessageBox.Yes|QMessageBox.No,

  926.                      defButton=QMessageBox.No):

  927.     msgBox = QMessageBoxWithBetterWidth(parent)

  928.     msgBox.setIcon(icon)

  929.     msgBox.setWindowTitle(title)

  930.     msgBox.setText(text)

  931.     msgBox.setInformativeText(extraText)

  932.     msgBox.setStandardButtons(buttons)

  933.     msgBox.setDefaultButton(defButton)

  934.     # pylint: disable=no-value-for-parameter

  935.     return msgBox.exec_()

  936.     # pylint: enable=no-value-for-parameter

  937. # pylint: enable=too-many-arguments

  938. 

  939. # ------------------------------------------------------------------------------------------------------------

  940. # Tweaks, in form of 'Parameter':Value or 'skinnameParameter':Value, are holds both per-rack and per-plugin fine-tuning values (tweaks).

  941. 

  942. def loadTweaks(self):

  943.     settings = QSafeSettings("falkTX", "Carla2")

  944.     skinTweaks = settings.value(CARLA_KEY_MAIN_SKIN_TWEAKS, CARLA_DEFAULT_MAIN_SKIN_TWEAKS, str)

  945.     try:

  946.         self.fTweaks = ast.literal_eval('{' + skinTweaks + '}')

  947.     except ValueError as e:

  948.         print("ERROR while parse `" + skinTweaks + "` :", e)

  949. 

  950. # ------------------------------------------------------------------------------------------------------------

  951. 

  952. def getPrefixSuffix(unit):

  953.     prefix = ""

  954.     suffix = unit.strip()

  955. 

  956.     if suffix == "(coef)":

  957.         prefix = "* "

  958.         suffix = ""

  959.     else:

  960.         suffix = " " + suffix

  961. 

  962.     return prefix, suffix

  963. 

  964. # ------------------------------------------------------------------------------------------------------------

  965. 

  966. def strLim(value, digits = 5):

  967.     # np.format_float_positional(value, trim='-', fractional=False, precision=digits)

  968.     result = "%.5f" % value

  969.     if "." in result:

  970.         result = result.strip("0")

  971.         if result[-1] == ".":

  972.             result = result.removesuffix(".")

  973. 

  974.     if len(result) > 9:

  975.         return '{:.3e}'.format(value)

  976.     else:

  977.         return result

  978. 

  979. # ------------------------------------------------------------------------------------------------------------

  980. # Geometry

  981. 

  982. RACK_KNOB_GAP = 5

  983. 

  984. # ------------------------------------------------------------------------------------------------------------

  985. # pylint: enable=possibly-used-before-assignment