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annotate pytouhou/ui/music.py @ 428:f41a26971a19

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Remove all Loader uses from outside pytouhou.games, and add a --no-music option to disable bgm.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Tue, 16 Jul 2013 21:17:22 +0200
parents b1248bab2d0f
children
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61adb5453e46 Implement music playback.
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1 # -*- encoding: utf-8 -*-
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2 ##
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3 ## Copyright (C) 2012 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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4 ##
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5 ## This program is free software; you can redistribute it and/or modify
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6 ## it under the terms of the GNU General Public License as published
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7 ## by the Free Software Foundation; version 3 only.
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8 ##
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9 ## This program is distributed in the hope that it will be useful,
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10 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ## GNU General Public License for more details.
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13 ##
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14
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15
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16 from os.path import join
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17 from glob import glob
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18 from pytouhou.lib import sdl
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19 from pytouhou.utils.helpers import get_logger
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20
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21 logger = get_logger(__name__)
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22
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23
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24 class MusicPlayer(object):
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25 def __init__(self, resource_loader, bgms):
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26 self.bgms = []
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27 for bgm in bgms:
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28 if not bgm:
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29 self.bgms.append(None)
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30 continue
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31 posname = bgm[1].replace('bgm/', '').replace('.mid', '.pos')
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32 try:
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33 track = resource_loader.get_track(posname)
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34 except KeyError:
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35 self.bgms.append(None)
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36 logger.warn(u'Music description “%s” not found.', posname)
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37 continue
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38 globname = join(resource_loader.game_dir, bgm[1]).replace('.mid', '.*')
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39 filenames = glob(globname)
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40 for filename in reversed(filenames):
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41 try:
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42 source = sdl.load_music(filename)
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43 except sdl.SDLError as error:
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44 logger.debug(u'Music file “%s” unreadable: %s', filename, error)
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45 continue
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46 else:
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47 source.set_loop_points(track.start / 44100., track.end / 44100.) #TODO: retrieve the sample rate from the actual track.
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48 self.bgms.append(source)
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49 logger.debug(u'Music file “%s” opened.', filename)
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50 break
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51 else:
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52 self.bgms.append(None)
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53 logger.warn(u'No working music file for “%s”, disabling bgm.', globname)
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54
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55 def play(self, index):
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56 bgm = self.bgms[index]
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57 if bgm:
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58 bgm.play(-1)
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59
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60
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61 class SFXPlayer(object):
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62 def __init__(self, loader, volume=.42):
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63 self.loader = loader
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64 self.channels = {}
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65 self.sounds = {}
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66 self.volume = volume
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67 self.next_channel = 0
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68
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69 def get_channel(self, name):
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70 if name not in self.channels:
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71 self.channels[name] = self.next_channel
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72 self.next_channel += 1
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73 return self.channels[name]
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74
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75 def get_sound(self, name):
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76 if name not in self.sounds:
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77 wave_file = self.loader.get_file(name)
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78 self.sounds[name] = sdl.load_chunk(wave_file)
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79 self.sounds[name].volume = self.volume
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80 return self.sounds[name]
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81
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82 def play(self, name, volume=None):
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83 sound = self.get_sound(name)
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84 channel = self.get_channel(name)
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85 if volume:
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86 sdl.mix_volume(channel, volume)
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87 sound.play(channel, 0)
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88
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89
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90 class NullPlayer(object):
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91 def __init__(self, loader=None, bgms=None):
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92 pass
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93
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94 def play(self, name, volume=None):
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95 pass