def play(self, sound, loops=0, maxtime=-1, fade_ms=0):
"""play Sound on this channel"""
# Note: channelnum will equal self.chan
if fade_ms > 0:
channelnum = sdl.Mix_FadeInChannelTimed(self.chan, sound.chunk,
loops, fade_ms, maxtime)
else:
channelnum = sdl.Mix_PlayChannelTimed(self.chan, sound.chunk,
loops, maxtime)
if channelnum != -1:
sdl.Mix_GroupChannel(channelnum, sound._chunk_tag)
_channeldata[channelnum].sound = sound
_channeldata[channelnum].queue = None
def queue(self, sound):
""" queue(Sound) -> None
queue a Sound object to follow the current
"""
# if nothing is playing
if _channeldata[self.chan].sound is None:
channelnum = sdl.Mix_PlayChannelTimed(self.chan, sound.chunk, 0,
-1)
if channelnum != -1:
sdl.Mix_GroupChannel(channelnum, sound._chunk_tag)
_channeldata[channelnum].sound = sound
# sound is playing, queue new sound
else:
_channeldata[self.chan].queue = sound
def play(self, loops=0, maxtime=-1, fade_ms=0):
"""play(loops=0, maxtime=-1, fade_ms=0) -> Channel
begin sound playback"""
if fade_ms > 0:
channelnum = sdl.Mix_FadeInChannelTimed(-1, self.chunk, loops,
fade_ms, maxtime)
else:
channelnum = sdl.Mix_PlayChannelTimed(-1, self.chunk, loops,
maxtime)
if channelnum < 0:
# failure
return None
_channeldata[channelnum].sound = self
_channeldata[channelnum].queue = None
sdl.Mix_Volume(channelnum, 128)
sdl.Mix_GroupChannel(channelnum, self._chunk_tag)
return Channel(channelnum)
def _endsound_callback(channelnum):
if not _channeldata:
return
data = _channeldata[channelnum]
# post sound ending event
if data.endevent != sdl.SDL_NOEVENT and sdl.SDL_WasInit(sdl.SDL_INIT_VIDEO):
event = ffi.new('SDL_Event*')
event.type = data.endevent
if event.type >= sdl.SDL_USEREVENT and event.type < sdl.SDL_NUMEVENTS:
event.user.code = channelnum
sdl.SDL_PushEvent(event)
if data.queue:
sound_chunk = data.sound.chunk
data.sound = data.queue
data.queue = None
channelnum = sdl.Mix_PlayChannelTimed(channelnum, sound_chunk, 0, -1)
if channelnum != -1:
sdl.Mix_GroupChannel(channelnum, data.sound._chunk_tag)
else:
data.sound = None
