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annotate pytouhou/lib/sdl.pyx @ 421:b1248bab2d0f

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Add back music and SFX playback using SDL_mixer instead of pyglet, and add FLAC and Vorbis support.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Tue, 16 Jul 2013 21:07:15 +0200
parents 3a7b36324611
children 52829ebe2561
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418
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1 # -*- encoding: utf-8 -*-
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2 ##
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3 ## Copyright (C) 2013 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 INIT_VIDEO = SDL_INIT_VIDEO
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16 INIT_PNG = IMG_INIT_PNG
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17
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18 GL_CONTEXT_MAJOR_VERSION = SDL_GL_CONTEXT_MAJOR_VERSION
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19 GL_CONTEXT_MINOR_VERSION = SDL_GL_CONTEXT_MINOR_VERSION
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20 GL_DOUBLEBUFFER = SDL_GL_DOUBLEBUFFER
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21 GL_DEPTH_SIZE = SDL_GL_DEPTH_SIZE
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22
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23 WINDOWPOS_CENTERED = SDL_WINDOWPOS_CENTERED
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24 WINDOW_OPENGL = SDL_WINDOW_OPENGL
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25 WINDOW_SHOWN = SDL_WINDOW_SHOWN
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26
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27 SCANCODE_Z = SDL_SCANCODE_Z
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28 SCANCODE_X = SDL_SCANCODE_X
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29 SCANCODE_LSHIFT = SDL_SCANCODE_LSHIFT
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30 SCANCODE_UP = SDL_SCANCODE_UP
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31 SCANCODE_DOWN = SDL_SCANCODE_DOWN
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32 SCANCODE_LEFT = SDL_SCANCODE_LEFT
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33 SCANCODE_RIGHT = SDL_SCANCODE_RIGHT
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34 SCANCODE_LCTRL = SDL_SCANCODE_LCTRL
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35 SCANCODE_ESCAPE = SDL_SCANCODE_ESCAPE
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36
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37 KEYDOWN = SDL_KEYDOWN
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38 QUIT = SDL_QUIT
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39
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40 DEFAULT_FORMAT = MIX_DEFAULT_FORMAT
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41
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42
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43 class SDLError(Exception):
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44 pass
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46
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47 cdef class Window:
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48 cdef SDL_Window *window
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49 cdef SDL_GLContext context
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50
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51 def __init__(self, const char *title, int x, int y, int w, int h, Uint32 flags):
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52 self.window = SDL_CreateWindow(title, x, y, w, h, flags)
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53 if self.window == NULL:
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54 raise SDLError(SDL_GetError())
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55
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56 def destroy_window(self):
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57 SDL_DestroyWindow(self.window)
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58
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59 def gl_create_context(self):
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60 self.context = SDL_GL_CreateContext(self.window)
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61
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62 def gl_swap_window(self):
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63 SDL_GL_SwapWindow(self.window)
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64
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65 def gl_delete_context(self):
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66 SDL_GL_DeleteContext(self.context)
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67
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68
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69 cdef class Surface:
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70 cdef SDL_Surface *surface
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71
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72 def __dealloc__(self):
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73 if self.surface != NULL:
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74 SDL_FreeSurface(self.surface)
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75
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76 property width:
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77 def __get__(self):
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78 return self.surface.w
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79
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80 property height:
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81 def __get__(self):
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82 return self.surface.h
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83
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84 property pixels:
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85 def __get__(self):
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86 return bytes(self.surface.pixels[:self.surface.w * self.surface.h * 4])
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87
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88 def blit(self, Surface other):
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89 if SDL_BlitSurface(other.surface, NULL, self.surface, NULL) < 0:
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90 raise SDLError(SDL_GetError())
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91
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92 def set_alpha(self, Surface alpha_surface):
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93 nb_pixels = self.surface.w * self.surface.h
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94 image = self.surface.pixels
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95 alpha = alpha_surface.surface.pixels
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96
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97 for i in xrange(nb_pixels):
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98 # Only use the red value, assume the others are equal.
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99 image[3+4*i] = alpha[3*i]
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100
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101
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102 cdef class Music:
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103 cdef Mix_Music *music
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104
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105 def __dealloc__(self):
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106 if self.music != NULL:
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107 Mix_FreeMusic(self.music)
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108
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109 def play(self, int loops):
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110 Mix_PlayMusic(self.music, loops)
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111
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112 def set_loop_points(self, double start, double end):
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113 #Mix_SetLoopPoints(self.music, start, end)
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114 pass
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115
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116
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117 cdef class Chunk:
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118 cdef Mix_Chunk *chunk
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119
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120 def __dealloc__(self):
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121 if self.chunk != NULL:
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122 Mix_FreeChunk(self.chunk)
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123
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124 property volume:
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125 def __set__(self, float volume):
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126 Mix_VolumeChunk(self.chunk, int(volume * 128))
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127
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128 def play(self, int channel, int loops):
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129 Mix_PlayChannel(channel, self.chunk, loops)
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130
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131
418
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132 def init(Uint32 flags):
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133 if SDL_Init(flags) < 0:
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134 raise SDLError(SDL_GetError())
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135
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136
420
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137 def img_init(Uint32 flags):
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138 if IMG_Init(flags) != flags:
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139 raise SDLError(SDL_GetError())
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140
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141
421
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142 def mix_init(int flags):
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143 if Mix_Init(flags) != flags:
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144 raise SDLError(SDL_GetError())
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145
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146
418
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147 def quit():
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148 SDL_Quit()
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149
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150
420
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151 def img_quit():
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152 IMG_Quit()
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153
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154
421
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155 def mix_quit():
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156 Mix_Quit()
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157
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158
418
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159 def gl_set_attribute(SDL_GLattr attr, int value):
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160 if SDL_GL_SetAttribute(attr, value) < 0:
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161 raise SDLError(SDL_GetError())
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162
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163
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164 def poll_events():
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165 cdef SDL_Event event
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166 ret = []
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167 while SDL_PollEvent(&event):
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168 if event.type == SDL_KEYDOWN:
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169 ret.append((event.type, event.key.keysym.scancode))
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170 elif event.type == SDL_QUIT:
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171 ret.append((event.type,))
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172 return ret
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173
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174
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175 def get_keyboard_state():
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176 cdef int numkeys
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177 cdef bint k
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178 cdef const Uint8 *state
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179 state = SDL_GetKeyboardState(&numkeys)
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180 return tuple([k is not False for k in state[:numkeys]])
419
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181
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182
420
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183 def load_png(file_):
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184 data = file_.read()
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185 rwops = SDL_RWFromConstMem(<char*>data, len(data))
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186 surface = Surface()
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187 surface.surface = IMG_LoadPNG_RW(rwops)
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188 SDL_RWclose(rwops)
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189 if surface.surface == NULL:
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190 raise SDLError(SDL_GetError())
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191 return surface
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192
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193
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194 def create_rgb_surface(int width, int height, int depth, Uint32 rmask=0, Uint32 gmask=0, Uint32 bmask=0, Uint32 amask=0):
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195 surface = Surface()
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196 surface.surface = SDL_CreateRGBSurface(0, width, height, depth, rmask, gmask, bmask, amask)
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197 if surface.surface == NULL:
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198 raise SDLError(SDL_GetError())
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199 return surface
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200
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201
421
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202 def mix_open_audio(int frequency, Uint16 format_, int channels, int chunksize):
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203 if Mix_OpenAudio(frequency, format_, channels, chunksize) < 0:
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204 raise SDLError(SDL_GetError())
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205
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206
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207 def mix_close_audio():
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208 Mix_CloseAudio()
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209
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210
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211 def mix_allocate_channels(int numchans):
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212 if Mix_AllocateChannels(numchans) != numchans:
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213 raise SDLError(SDL_GetError())
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214
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215
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216 def mix_volume(int channel, float volume):
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217 return Mix_Volume(channel, int(volume * 128))
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218
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219
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220 def mix_volume_music(float volume):
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221 return Mix_VolumeMusic(int(volume * 128))
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222
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223
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224 def load_music(const char *filename):
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225 music = Music()
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226 music.music = Mix_LoadMUS(filename)
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227 if music.music == NULL:
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228 raise SDLError(SDL_GetError())
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229 return music
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230
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231
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232 def load_chunk(file_):
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233 cdef SDL_RWops *rwops
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234 chunk = Chunk()
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235 data = file_.read()
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236 rwops = SDL_RWFromConstMem(<char*>data, len(data))
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237 chunk.chunk = Mix_LoadWAV_RW(rwops, 1)
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238 if chunk.chunk == NULL:
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239 raise SDLError(SDL_GetError())
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240 return chunk
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241
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242
419
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243 def get_ticks():
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244 return SDL_GetTicks()
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245
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246
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247 def delay(Uint32 ms):
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248 SDL_Delay(ms)