def test_load_file(self):
wavfile = RESOURCES.get_path("hey.wav")
snddata = audio.load_file(wavfile)
self.assertIsNone(snddata.bufid)
self.assertEqual(snddata.format, al.AL_FORMAT_MONO16)
self.assertEqual(snddata.frequency, 44100)
self.assertEqual(snddata.size, 122880)
def run():
# We can use OpenAL directly to play some sound, there is no
# necessity to use the audio module. This however is a bit more
# complex (read: involves writing more code) and less
# comfortable. For a direct OpenAL example, check the openal.py
# example file.
# Create a SoundSink. It is used do the output device handling,
# source and audio buffer management and anything else necessary
# to play sounds.
#
# You can create multiple sinks for different audio devices or for
# the same device, so that you can e.g. manage different positions
# for listening to sounds.
sink = audio.SoundSink()
# Create a SoundSource. The SoundSource defines an object within
# your application world, that can emit sounds. It could be e.g. a
# spaceship within your game, the general output object within your a
# music player application, ...
source = audio.SoundSource()
# Load a SoundData object from the passed WAV file. A SoundData is
# nothing more than a raw audio buffer (as PCM data), along with
# some information about its channels, bit rate and frequency.
data = audio.load_file(RESOURCES.get_path("hey.wav"))
# Add the SoundData to the source, so that it will be played, when
# the source is processed by the SoundSink.
source.queue(data)
# Tell the SoundSource that it shall be played on the next
# processing by the SoundSink. This will cause the SoundSink to
# buffer all attached SoundData objects of the SoundSource and play
# them in order.
source.request = audio.SOURCE_PLAY
sink.process_source(source)
# The main loop. In contrast to other exampes, we are checking the
# status of our previously created source directly. Once it is done
# playing, we exit from the loop to finish the program execution.
#
# The OpenAL sound system uses its own threads to play sounds and
# music so that we do not not handle it explicitly, if we do not
# need to perform more complex or synchronised operations. Hence,
# once a SoundSource was requested to play something and got
# processed, there is not much more left to do.
while True:
state = al.get_source_i(source.ssid, al.AL_SOURCE_STATE)
if state == al.AL_PLAYING:
print("playing...")
else:
print("done")
break
time.sleep(2)
