annotate pytouhou/ui/music.pyx @ 519:b18f0bd30ad0

Optimise background rendering.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Sat, 07 Dec 2013 22:16:38 +0100
parents 4778c482f24a
children 7c3c90468996
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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
341
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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.lib cimport sdl
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20 from pytouhou.utils.helpers import get_logger
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21
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22 logger = get_logger(__name__)
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23
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24
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25 class MusicPlayer(object):
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26 def __init__(self, resource_loader, bgms):
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27 self.bgms = []
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28 for bgm in bgms:
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29 if not bgm:
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30 self.bgms.append(None)
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31 continue
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32 posname = bgm[1].replace('bgm/', '').replace('.mid', '.pos')
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33 try:
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34 track = resource_loader.get_track(posname)
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35 except KeyError:
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36 self.bgms.append(None)
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37 logger.warn(u'Music description “%s” not found.', posname)
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38 continue
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39 globname = join(resource_loader.game_dir, bgm[1].encode('ascii')).replace('.mid', '.*')
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40 filenames = glob(globname)
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41 for filename in reversed(filenames):
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42 try:
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43 source = sdl.load_music(filename)
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44 except sdl.SDLError as error:
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45 logger.debug(u'Music file “%s” unreadable: %s', filename, error)
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46 continue
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47 else:
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48 source.set_loop_points(track.start / 44100., track.end / 44100.) #TODO: retrieve the sample rate from the actual track.
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49 self.bgms.append(source)
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50 logger.debug(u'Music file “%s” opened.', filename)
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51 break
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52 else:
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53 self.bgms.append(None)
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54 logger.warn(u'No working music file for “%s”, disabling bgm.', globname)
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55
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56 def play(self, index):
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57 cdef sdl.Music bgm
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58 bgm = self.bgms[index]
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59 if bgm is not None:
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60 bgm.play(-1)
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61
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62
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63 class SFXPlayer(object):
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64 def __init__(self, loader, volume=.42):
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65 self.loader = loader
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66 self.channels = {}
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67 self.sounds = {}
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68 self.volume = volume
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69 self.next_channel = 0
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70
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71 def get_channel(self, name):
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72 if name not in self.channels:
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73 self.channels[name] = self.next_channel
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74 self.next_channel += 1
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75 return self.channels[name]
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76
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77 def get_sound(self, name):
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78 cdef sdl.Chunk chunk
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79 if name not in self.sounds:
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80 wave_file = self.loader.get_file(name)
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81 try:
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82 chunk = sdl.load_chunk(wave_file)
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83 except sdl.SDLError as error:
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84 logger.warn(u'Sound “%s” not found: %s', name, error)
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85 chunk = None
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86 else:
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87 chunk.set_volume(self.volume)
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88 self.sounds[name] = chunk
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89 return self.sounds[name]
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90
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91 def play(self, name, volume=None):
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92 cdef sdl.Chunk sound
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93 sound = self.get_sound(name)
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94 if sound is None:
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95 return
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96 channel = self.get_channel(name)
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97 if volume:
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98 sdl.mix_volume(channel, volume)
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99 sound.play(channel, 0)
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100
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101
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102 class NullPlayer(object):
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103 def __init__(self, loader=None, bgms=None):
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104 pass
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105
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106 def play(self, name, volume=None):
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107 pass