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Author Topic: Using SoundBuffer to split audio files?  (Read 2286 times)

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s.baus

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Using SoundBuffer to split audio files?
« on: February 24, 2018, 01:17:29 pm »
Hello everybody,
I use SFML successfully inside my project for audio playback and like it very much. I use the C# binding and now have the task to split an audio file into little files (one large file about 2 hours into files of some minutes). Since I need a plattform independent framework (my project is build with mono/gtk-sharp,etc.) and didn't find any valuable framework I thought of using SFML for this task. So I took a look inside and found the SoundBuffer class, which already has the SaveToFile method and the internal handling for different file formats (the audio file can be ogg/wave/flac/mp3 (I know, it is not supported by SFML, wrote a wrapper myself)). The splitting will be done from time x to time y. How can I find out, where the samples of SoundBuffer belong to, meaning, which time they stand for?

Do you think this task can be achieved with this approach?
Thanks for respones.
Sven
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eXpl0it3r

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Re: Using SoundBuffer to split audio files?
« Reply #1 on: February 24, 2018, 02:58:52 pm »
The sound buffer has a function to get the samples rate (samples per second) and the channel count (e.g. stereo = 2) and the samples themselves which are interleaved for each channel (e.g. LRLRLRLRLR...).

All you need now is math to convert from time to number of samples. ;)
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s.baus

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Re: Using SoundBuffer to split audio files?
« Reply #2 on: February 24, 2018, 03:58:32 pm »
Thanks for your response, this helps me really a lot, since I didn't know, how the samples are structured.

Does SoundBuffer recognize in which file format it should save on the file extension, or is there something I have to keep in mind? Since I think wave, ogg, flac are not all the same?! :)
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