pygame.mixer.Sound(buffer) does not attempt to identify stream type

[baliame]

pygame.mixer.Sound(file="example.ogg")

Reads and loads an ogg file properly without a problem, however

with open("example.ogg", rb) as f:
  data = f.read()
  pygame.mixer.Sound(buffer=data)

attempts to read the buffer in a different format. Could we change the behaviour to interpret the buffer as the contents of a while or if ogg files don't have a header for identifying them, can we at least get a flag to note that the buffer should be interpreted as an ogg?

[llenck]

I'm pretty sure the buffer / array arguments aren't meant to accept the contents of a file but rather raw samples which will be played back in the format that pygame.mixer.get_init() returns, which is quite useful if you are editing or generating audio on the fly.

I think if you can convince people that a flag for interpreting the buffer argument as file contents (ogg and wav files have easy, clear headers) would be a useful feature, someone (or me) might add this; but without anyone else approving this feature request I won't work on this.

[baliame]

My idea is that all the data I have is packed into a single data file to reduce file count, including a large number of sounds and images. While the images can be transmitted this way to pygame.image using a BytesIO, sounds are a problem and I am currently working around this problem by creating a temporary directory, writing them to a file there and then rereading using pygame.mixer.

Basically, I'd like to be able to reduce the number of files that are packaged with the game.

[illume]

Hi,

are you having issues using BytesIO like below? This seems to work for me.

python 2 version...

$ python
Python 2.7.15 (default, Jul 15 2018, 21:21:29) 
[GCC 4.2.1 Compatible Apple LLVM 9.1.0 (clang-902.0.39.2)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import StringIO
>>> f=StringIO.StringIO(open('data/house_lo.ogg').read())
>>> import pygame
pygame 1.9.5.dev0
Hello from the pygame community. https://www.pygame.org/contribute.html
>>> pygame.init()
objc[22691]: Class SDLApplication is implemented in both /usr/local/opt/sdl2/lib/libSDL2-2.0.0.dylib (0x101aca150) and /usr/local/lib/python2.7/site-packages/pygame-1.9.5.dev0-py2.7-macosx-10.13-x86_64.egg/pygame/sdlmain_osx.so (0x103543600). One of the two will be used. Which one is undefined.
(5, 0)
>>> pygame.mixer.Sound(f)
<Sound object at 0x1019628c8>
>>> s = _
>>> s.get_length()
7.104852676391602
>>> s2=pygame.mixer.Sound('data/house_lo.ogg')
>>> s2.get_length()
7.104852676391602

python 3 version

python3
Python 3.7.0 (default, Jul 17 2018, 00:00:00) 
[Clang 9.1.0 (clang-902.0.39.2)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pygame
pygame 1.9.5.dev0
Hello from the pygame community. https://www.pygame.org/contribute.html
>>> from io import BytesIO
>>> f=BytesIO(open('data/house_lo.ogg', 'rb').read())
>>> pygame.init()
(6, 0)
>>> pygame.mixer.Sound(f).get_length()
7.104852676391602
>>> pygame.mixer.Sound(file='data/house_lo.ogg').get_length()
7.104852676391602

[baliame]

...you're absolutely right and I don't know why I didn't think of that considering I already used it for images. Thanks!