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annotate pytouhou/ui/music.pyx @ 758:daa23a4ff24d

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utils: Replace custom SeekableSlice struct with std::io::Cursor.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Tue, 05 Jan 2021 04:11:18 +0100
parents 4ce3ef053a25
children d18c0bf11138
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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.sdl cimport load_music, Music, load_chunk, Chunk
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20 from pytouhou.utils.helpers import get_logger
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21 from pytouhou.game.music cimport MusicPlayer
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22
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23 logger = get_logger(__name__)
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24
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25
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26 cdef class BGMPlayer(MusicPlayer):
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27 cdef list bgms
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28
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29 def __init__(self, resource_loader, bgms):
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30 self.bgms = []
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31 for bgm in bgms:
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32 if not bgm:
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33 self.bgms.append(None)
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34 continue
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35 posname = bgm[1].replace('bgm/', '').replace('.mid', '.pos')
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36 try:
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37 track = resource_loader.get_track(posname)
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38 except KeyError:
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39 track = None
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40 logger.warn('Music description “%s” not found, continuing without looping data.', posname)
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41 globname = join(resource_loader.game_dir, bgm[1]).replace('.mid', '.*')
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42 filenames = glob(globname)
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43 for filename in reversed(filenames):
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44 try:
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45 source = load_music(filename)
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46 except sdl.SDLError as error:
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47 logger.debug('Music file “%s” unreadable: %s', filename, error)
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48 continue
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49 else:
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50 if track is not None:
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51 source.set_loop_points(track.start / 44100., track.end / 44100.) #TODO: retrieve the sample rate from the actual track.
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52 self.bgms.append(source)
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53 logger.debug('Music file “%s” opened.', filename)
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54 break
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55 else:
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56 self.bgms.append(None)
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57 logger.warn('No working music file for “%s”, disabling bgm.', globname)
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58
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59 cpdef play(self, index):
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60 cdef Music bgm
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61 bgm = self.bgms[index]
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62 if bgm is not None:
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63 bgm.play(-1)
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64
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65
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66 cdef class SFXPlayer(MusicPlayer):
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67 cdef object loader
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68 cdef dict channels, sounds
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69 cdef float volume
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70 cdef int next_channel
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71
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72 def __init__(self, loader, volume=.42):
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73 self.loader = loader
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74 self.channels = {}
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75 self.sounds = {}
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76 self.volume = volume
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77 self.next_channel = 0
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78
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79 cdef int get_channel(self, name) except -1:
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80 if name not in self.channels:
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81 self.channels[name] = self.next_channel
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82 self.next_channel += 1
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83 return self.channels[name]
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84
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85 cdef Chunk get_sound(self, name):
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86 cdef Chunk chunk
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87 if name not in self.sounds:
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88 try:
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89 wave_file = self.loader.get_file(name)
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90 chunk = load_chunk(wave_file)
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91 except (KeyError, sdl.SDLError) as error:
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92 logger.warn('Sound “%s” not found: %s', name, error)
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93 chunk = None
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94 else:
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95 chunk.set_volume(self.volume)
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96 self.sounds[name] = chunk
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97 return self.sounds[name]
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98
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99 cpdef play(self, name):
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100 sound = self.get_sound(name)
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101 if sound is None:
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102 return
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103 channel = self.get_channel(name)
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104 sound.play(channel, 0)
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105
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106 cpdef set_volume(self, name, float volume):
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107 sound = self.get_sound(name)
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108 if sound is not None:
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109 sound.set_volume(volume)