How to auto exit after audio is finished?

[azkadev]

How to auto exit when finished?

I tried this code by removing getchar but it doesn't work if you add getchar, but it doesn't auto exit

#define MINIAUDIO_IMPLEMENTATION
#include "miniaudio.h"

#include <stdio.h>

void play(char* path)
{
    ma_result result;
    ma_engine engine;
 

    result = ma_engine_init(NULL, &engine);
    if (result != MA_SUCCESS) {
        printf("Failed to initialize audio engine."); 
    }

    ma_engine_play_sound(&engine, path, NULL);
    ma_engine_uninit(&engine);
    exit(0);
}

Sorry I'm still a beginner in c

[mackron]

Can you explain in more detail what it is you're trying to achieve? Do you want to just play a sound and then exit the whole program when the sound finishes playing? If so, you need to periodically call ma_sound_at_end() to know when the sound has finished, but you won't be able to use ma_engine_play_sound() for that because it doesn't give you a ma_sound object. Instead you'll need to initialize a sound ma_sound object with ma_sound_init_from_file(). There's no way to wait for ma_engine_play_sound() to finish - that function plays the sound asynchronously (it returns straight away while the sound plays in the background).

[azkadev]

Yes I want to make a music player using your library,

Btw I've managed to auto exit after playing music,

this is my code

#define MINIAUDIO_IMPLEMENTATION
#include "miniaudio.h"
#include <stdio.h>

void play(char *path)
{
    ma_result result;
    ma_engine engine;

    result = ma_engine_init(NULL, &engine);
    if (result != MA_SUCCESS)
    {
        printf("Failed to initialize audio engine.");
        exit(1);
    }

    ma_sound sound;
    result = ma_sound_init_from_file(&engine, path, 0, NULL, NULL, &sound);
    if (result != MA_SUCCESS)
    {
        printf("Failed to load sound file.");
        exit(1);
    }
    ma_sound_start(&sound);
    while (ma_sound_at_end(&sound) == 0)
    {
    }
    ma_sound_stop(&sound);
    ma_engine_uninit(&engine);
    return;
}

int main()
{
    play("./block.mp3");
    return 0;
}

but how to find out the position duration of the music?

[mackron]

Use ma_sound_get_cursor_in_pcm_frames() to get the current playback position and ma_sound_get_length_in_pcm_frames() to get the length. You should read the documentation - it's all explained in there: https://miniaud.io/docs/manual

You'll see when you read the documentation that there's a lot going on in miniaudio. If you're wanting to just learn C and/or C++, miniaudio might not be the best option for you to start with. Also, a better solution for what you're trying to do would be to use the low-level API. You're currently using the high level API which is overkill for what you're wanting to do.

[joshnatis]

I also tried to make a music player on top of miniaudio a while ago! Here's the code for reference, maybe it can help you get some ideas: https://github.com/joshnatis/winona. It's pretty hacky and I don't think it's a great example, but it works. I solved the "when's the song over?" problem by doing basically what mackron suggested, periodically checking if the # of frames read is 0, and if so moving on to the next song.

Also note that it's using an old version of miniaudio so some things may be deprecated by now, and that it's using the low level API.