Ver(1.3): Fixes for Windows, cleanup

Author: duangsuse

hachiko/funutils.py

@@ -5,31 +5,13 @@
 from ctypes.util import find_library
 
 from sys import platform as sys_platform
-from os import name as os_name
-
-def findLibrary(name, lib_names) -> str:
-  try:
-    return next(filter(lambda it: it != None, map(find_library, lib_names))) or ""
-  except StopIteration:
-    raise ImportError(f"Couldn't find the {name} library")
-
-def createLibrary(path, mode = 1):
-  lib = CDLL(path)
-  def cfunc(name, t_result, *args):
-    t_args = tuple(arg[1] for arg in args)
-    extras = tuple((mode, arg[0]) for arg in args)
-    return CFUNCTYPE(t_result, *t_args)((name, lib), extras)
-  return cfunc
-
-def platform(opts = {"linux": "linux", "windows": "windows", "macos": "macos"}):
-  for (k, v) in opts.items():
-    if sys_platform.lower().startswith(k): return v
-  return os_name
-
+from os.path import isfile
+from itertools import chain
 
 def require(value, p, message):
   if not p(value): raise ValueError(f"{message}: {value}")
 
+isNotNone = lambda it: it != None
 isNonnegative = lambda it: it >= 0
 def isInbounds(start, stop):
   return lambda it: it in range(start, stop)
@@ -41,6 +23,30 @@ def flatMap(f, xs):
   for ys in map(f, xs):
     for y in ys: yield y
 
+def findLibrary(name, lib_names, solver=lambda name: [f"./{name}.dll"]) -> str:
+  paths = filter(isNotNone, map(find_library, lib_names))
+  for dlls in map(solver, lib_names):
+    paths = chain(paths, filter(isfile, dlls))
+  try:
+    return str(next(paths)) #< appended dll scan
+  except StopIteration:
+    raise ImportError(f"couldn't find the {name} library")
+
+def createLibrary(path, mode = 1):
+  lib = CDLL(path)
+  def cfunc(name, t_result, *args):
+    t_args = tuple(arg[1] for arg in args)
+    extras = tuple((mode, arg[0]) for arg in args)
+    return CFUNCTYPE(t_result, *t_args)((name, lib), extras)
+  return cfunc
+
+def platform(opts = {"linux": ["linux"], "windows": ["win", "cygwin"], "macos": ["darwin"]}):
+  for (v, ks) in opts.items():
+    for k in ks:
+      if sys_platform.lower().startswith(k): return v
+  raise ValueError(f"unsupported platform: {sys_platform}")
+
+
 global cdecls #v define a subset of C Header
 if __name__ == "__main__":
   import pyparsing as pas
@@ -101,11 +107,11 @@ def cdefs(decls):
     cdefs(decls)
   output.close()
 
-def main(argv):
+def main(argv = argv):
   if len(argv) < 4:
     print(f"Usage: {argv[0]} header name lib_names")
     return
   header, name = argv[1:3]
   codegen(f"{name}.py", header, name, argv[3:])
 
-if __name__ == '__main__': main(argv)
+if __name__ == '__main__': main()

hachiko/hachi.py

@@ -182,7 +182,7 @@ def onEvent(event):
       if exc.value == "proceed": break
   return reducer.finish()
 
-class CallFlagTimed(CallFlag):
+class CallFlagTimed(CallFlag): #< time record (op -- op1)*
   def __init__(self, op, op1):
     super().__init__(op, op1)
     self.t0 = time()

hachiko/synthesize.py

@@ -9,11 +9,13 @@
 try: import numpy
 except ImportError: pass
 
-drivers = ["alsa", "oss", "jack", "portaudio", "sndmgr", "coreaudio", "Direct Sound", "pulseaudio"]
+drivers = ["alsa", "oss", "jack", "pulseaudio", "portaudio", "sndmgr", "coreaudio", "dsound", "waveout"]
+platform_drivers = {"linux": "alsa", "windows": "dsound", "macos": "coreaudio"}
 
+from .funutils import isNonnegative, isInbounds
 from .FluidSynth import *
 
-def fluid_synth_write_s16_stereo(synth, n: int, n_channel = 2): # -> numpy.ndarray
+def fluid_synth_write_s16_stereo(synth, n: int, n_channel=2) -> List[int]:
   """Return generated samples in stereo 16-bit format"""
   buf = create_string_buffer(n*n_channel*sizeof(c_int16))
   fluid_synth_write_s16(synth, n, buf, 0, n_channel, buf, 1, n_channel)
@@ -44,29 +46,29 @@ def setting(self, key, value):
       fluid_settings_setstr(sets, bk, value.encode())
 
   def sfload(self, filename, update_midi_preset=0) -> int:
-      return fluid_synth_sfload(self.synth, filename.encode(), update_midi_preset)
+    return fluid_synth_sfload(self.synth, filename.encode(), update_midi_preset)
   def sfunload(self, sfid, update_midi_preset=0):
-      return fluid_synth_sfunload(self.synth, sfid, update_midi_preset)
+    fluid_synth_sfunload(self.synth, sfid, update_midi_preset)
   def program_select(self, chan, sfid, bank, preset):
-      return fluid_synth_program_select(self.synth, chan, sfid, bank, preset)
+    fluid_synth_program_select(self.synth, chan, sfid, bank, preset)
 
   def noteon(self, chan, key, vel=127):
     require(chan, isNonnegative, "bad channel")
     require(key, isInbounds(0, 128), "bad key")
     require(vel, isInbounds(0, 128), "bad velocity")
-    return fluid_synth_noteon(self.synth, chan, key, vel)
+    fluid_synth_noteon(self.synth, chan, key, vel)
   def noteoff(self, chan, key):
     require(chan, isNonnegative, "bad channel")
     require(key, isInbounds(0, 128), "bad key")
-    return fluid_synth_noteoff(self.synth, chan, key)
+    fluid_synth_noteoff(self.synth, chan, key)
 
-  def start(self, driver=platform({"linux": "alsa", "windows": "sndmgr", "macos": "coreaudio"}), device=None):
+  def start(self, driver=platform_drivers[platform()], device=None):
     """driver could be any str in drivers"""
     require(driver, drivers.__contains__, "unsupported driver")
     self.setting(b"audio.driver", driver)
     if device is not None: self.setting(f"audio.{driver}.device", device)
     self.audio_driver = new_fluid_audio_driver(self.settings, self.synth)
-  def get_samples(self, n=1024):
+  def get_samples(self, n=1024) -> List[int]:
     """Generate audio samples
     Returns ndarray containing n audio samples.
     If synth is set to stereo output(default) the array will be size 2*n.
@@ -81,24 +83,25 @@ def __init__(self, sample_rate):
   @staticmethod
   def getFontPresets(path_sfont) -> List[Tuple[int, int, str]]:
     with open(path_sfont, "rb") as fbuf:
-      sf = Sf2File(fbuf)
+      sf = Sf2File(fbuf) #< parse sf2
       return [(p.bank, p.preset, p.name) for p in sf.build_presets() if len(p.bags) != 0]
 
-  def setFont(self, path_sfont, idx_preset = 0):
+  def setFont(self, path_sfont, idx_preset=0):
     presets = NoteSynth.getFontPresets(path_sfont)
     require(presets, hasIndex(idx_preset), "preset outbounds")
     preset = presets[idx_preset]
     (bank, patch, _) = preset
     self.program_select(0, self.sfload(path_sfont), bank, patch)
 
   def noteon(self, pitch): return super().noteon(0, pitch)
-  def noteoff(self, pitch = None):
-    return super().noteoff(0, pitch) if pitch != None else super().noteoff(0, self.last_pitch)
+  def noteoff(self, pitch=None):
+    if pitch != None: super().noteoff(0, pitch)
+    else: super().noteoff(0, self.last_pitch)
   def noteSwitch(self, pitch):
     if self.last_pitch != (-1):
       self.noteoff()
     self.noteon(pitch)
     self.last_pitch = pitch
 
-  def sampleNote(self, n_sec):
+  def sampleNote(self, n_sec) -> List[int]:
     return self.get_samples(self.sample_rate*n_sec)

setup.py

@@ -9,7 +9,7 @@ def parse_requirements(requirements):
     return list(filter(lambda s: s.strip() != "", items))
 
 setup(
-  name="hachiko-bapu", version="0.1.2",
+  name="hachiko-bapu", version="0.1.3",
   python_requires=">=3.5",
   author="duangsuse", author_email="fedora-opensuse@outlook.com",
   url="https://github.com/duangsuse-valid-projects/Hachiko",