I've needed just to play audio in my Tkinter application, but it seems there is no easy way to do this, so I have made this simple code. It is small ctypes wrapper around SDL_mixer.
It should work for Win and *nix also .. I've tested it on ubuntu-14.04.3-desktop-i386
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from ctypes.util import find_library
import os
_sdl_audio_init=False
_sdl_audio_music=None
_sdl_audio_sounds={}
_libsdl=None
_libsdl_mixer=None
def sdl_audio_load(snd,fn=None,reload=False):
global _sdl_audio_sounds,_libsdl,_libsdl_mixer
if snd not in _sdl_audio_sounds or reload:
sdl_audio_init()
if snd in _sdl_audio_sounds: _libsdl_mixer.Mix_FreeChunk(_sdl_audio_sounds[snd])
rw=_libsdl.SDL_RWFromFile(fn,'rb')
_sdl_audio_sounds[snd]=_libsdl_mixer.Mix_LoadWAV_RW(rw,1)
def sdl_audio_play(snd,loop=0,channel=-1):
global _sdl_audio_sounds,_libsdl_mixer
sdl_audio_load(snd)
_libsdl_mixer.Mix_PlayChannelTimed(channel,_sdl_audio_sounds[snd],loop,-1)
def sdl_audio_stop(channel=-1):
global _libsdl_mixer
return _libsdl_mixer.Mix_HaltChannel(channel)
def sdl_audio_volume(volume=-1,channel=-1):
global _libsdl_mixer
if type(volume) is type(.1): volume=int(volume*128)
return _libsdl_mixer.Mix_Volume(channel,volume)
def sdl_audio_init():
global _sdl_audio_init,_libsdl,_libsdl_mixer
if _sdl_audio_init: return None
try: _libsdl=ctypes.cdll.SDL
except:
name=find_library('SDL')
if name is None: return False
_libsdl=ctypes.cdll.LoadLibrary(name)
try: _libsdl_mixer=ctypes.cdll.SDL_mixer
except:
name=find_library('SDL_mixer')
if name is None: return False
_libsdl_mixer=ctypes.cdll.LoadLibrary(name)
_libsdl.SDL_Init(0)
_libsdl.SDL_InitSubSystem(0x00000010)# Init audio subsystem
_libsdl_mixer.Mix_Init()
_libsdl_mixer.Mix_OpenAudio(44100,0x8010,2,512)
_sdl_audio_init=True
return True
def sdl_audio_playmusic(fn,loop=1):
global _sdl_audio_music,_libsdl_mixer
sdl_audio_init()
sdl_audio_stopmusic()
_sdl_audio_music=_libsdl_mixer.Mix_LoadMUS(os.path.realpath(fn))
_libsdl_mixer.Mix_PlayMusic(_sdl_audio_music,loop)
def sdl_audio_pausemusic():
global _sdl_audio_music,_libsdl_mixer
if _sdl_audio_music is not None:
if _libsdl_mixer.Mix_PlayingMusic(): _libsdl_mixer.Mix_PauseMusic()
def sdl_audio_stopmusic():
global _sdl_audio_music,_libsdl_mixer
sdl_audio_pausemusic()
_libsdl_mixer.Mix_HaltMusic()
_libsdl_mixer.Mix_FreeMusic(_sdl_audio_music)
_sdl_audio_music=None
def sdl_audio_volumemusic(volume=-1):
global _libsdl_mixer
if type(volume) is type(.1): volume=int(volume*128)
return _libsdl_mixer.Mix_VolumeMusic(volume)
def sdl_audio_quit():
global _sdl_audio_init,_sdl_audio_sounds,_libsdl,_libsdl_mixer
if not _sdl_audio_init: return False
sdl_audio_stopmusic()
sdl_audio_stop()
map(lambda chunk: _libsdl_mixer.Mix_FreeChunk(chunk),_sdl_audio_sounds.values())
_libsdl_mixer.Mix_CloseAudio()
_libsdl_mixer.Mix_Quit()
_libsdl.SDL_Quit()
return True
|
[Prerequisites]
You will need to install these DLLs to make it work:
SDL
SDL_mixer
Simply download DLLs and unpack them to your app directory.
For linux users, this should be enought:
sudo apt-get install libsdl1.2debian
sudo apt-get install libsdl1.2-dev
sudo apt-get install libsdl-mixer1.2
sudo apt-get install libsdl-mixer1.2-dev
[Usage and notes]
It will do all ini stuff for you.
sdl_audio_volumemusic works AFTER sdl_audio_playmusic is called
volume can be 0 - 128
At the end just call sdl_audio_quit to clear stuff.
[Example]
import sdl_audio# lib
import time
sdl_audio.sdl_audio_playmusic('./ambient_background.ogg',-1)
time.sleep(3)# play music fo 3 secs
sdl_audio.sdl_audio_play('./shot.wav')
time.sleep(1)# wait for shot
sdl_audio.sdl_audio_quit()
[Updates]
17.8.2015
- better sdl searching
- now should work on linux too (tested on ubuntu-14.04.3-desktop-i386)
- sdl_audio_init() returns True on success, None if already initialized and False on error
- minor fixes
29.6.2015
- added sound support
- sdl_audio_init is now function by itself
