How to play an audio in specified time bounds?

[vkuznetsovgn]

Hello.

I am currently utilizing ma_sound structure to play an audio.
The goal is to play the audio in specified time bounds.
For example, if the audio has length of 10 seconds, but I am specifying to=2.5, from=5 , the audio would play from 2.5 sec to 5 sec (in a loop if the looping flag is enabled). The bounds should be settable, not hardcoded.
It would be great if you could write an example of how to do it.
Thank you in advance.

This is how I play the sound now.

// getting float from, float to, bool looping;
ma_engine engine;
ma_engine_init(nullptr, &engine);
ma_sound sound;
ma_sound_init_from_file(&engine, "my_sound.wav", 0, NULL, NULL, &sound);
ma_sound_set_looping(&sound, looping);
// TODO: How to utilize from and to before starting?
ma_sound_start(&sound);
// ...

[mackron]

Try using ma_data_source_set_range_in_pcm_frames(). Get the ma_data_source object with ma_sound_get_data_source(). The range is specified in frames so you'll need to convert your seconds to frames which you can use with the sample rate which you can retrieve with ma_sound_get_data_format() (pass in NULL for the variables you don't need).

[vkuznetsovgn]

Great to hear!
I'll try it out today.

[vkuznetsovgn]

Hi @mackron

So, I've played around with the new version of the code and found a bug.
I attached minimal reproducible example.

The testcase steps shortly:

1. Set range from 0.0 to 1.0 -- works.
2. Set range from 2.0 to 2.5 -- works.
3. Set range back from 0.0 to 1.0 -- does not work.

example

[mackron]

Thanks. I think I've identified the issue with that one. I've updated the dev branch again.

[vkuznetsovgn]

Hi @mackron
Looks like everything works now. Could not find any issues during testing and playing around with my player.
Thank you very much for your work and Marry Christmas!

[mackron]

Great, that's good to hear. I'll get this released soon.