How to play a sound after it stops at its set 'stop time' ?

[ahmadharis4u]

Scenario:

I initialized a sound and set it to play for 10s by doing this:
ma_result result = ma_sound_init_from_file(&m_engine, m_stFileName.c_str(), MA_SOUND_FLAG_DECODE | MA_SOUND_FLAG_ASYNC, NULL, NULL, &m_sound);
if (result == MA_SUCCESS)
{
ma_sound_set_stop_time_in_pcm_frames(&m_sound, ma_engine_get_time(&m_engine) + (ma_engine_get_sample_rate(&m_engine) * 10));
result = ma_sound_start(&m_sound);
}

This plays the sound for 10s and stops.
But when I try to play it again by calling only
result = ma_sound_start(&m_sound);
nothing plays, even though result is success.

I tried to call
result = ma_sound_seek_to_pcm_frame(&m_sound, 0);
before the ma_sound_start call, but this doesn't work as well.

Question:

How do I reset the stop time of the sound, so that it starts playing again after seek to 0.

I hope my question is clear.

[mackron]

There's a possible bug here. I'm going to try replicating this and get back to you.

[ahmadharis4u]

I think it's not playing for the 2nd time since the stop time has already passed.
To overcome this, I set a new stop time (10s ahead) before starting the sound.
This method worked.
But yeah, the fact that result was returned as MA_SUCCESS without starting the sound (as stated in my query) might be a bug.

[mackron]

I think it's because of this logic in ma_engine_node_process_pcm_frames__sound()

    /* If we're marked at the end we need to stop the sound and do nothing. */
    if (ma_sound_at_end(pSound)) {
        ma_sound_stop(pSound);
        *pFrameCountOut = 0;
        return;
    }

    /* If we're seeking, do so now before reading. */
    seekTarget = c89atomic_load_64(&pSound->seekTarget);
    if (seekTarget != MA_SEEK_TARGET_NONE) {
        ma_data_source_seek_to_pcm_frame(pSound->pDataSource, seekTarget);

        /* Any time-dependant effects need to have their times updated. */
        ma_node_set_time(pSound, seekTarget);

        c89atomic_exchange_64(&pSound->seekTarget, MA_SEEK_TARGET_NONE);
    }

I'm thinking the /* If we're seeking, do so now before reading. */ section needs to be moved to above the /* If we're marked at the end we need to stop the sound and do nothing. */ section. What I think it happening is that because your sound is considered to be at the end, it's never getting to the point where the timer is getting reset with ma_node_set_time(). I'll look at this soon and report back.

[mackron]

This is very old now, but I've looked into this and there's actually no bug here. The stop time is in absolute global time, and even though you've seeked the sound back to the start, the global is still beyond the sound's stop time because you haven't called ma_sound_set_stop_time_in_pcm_frames() with the updated global time when you want to restart it.

ma_sound_set_stop_time_in_pcm_frames(&sound, ma_engine_get_time(&engine) + (ma_engine_get_sample_rate(&engine) * 10)); // <-- You need to update the stop time to account for the engine's new global time.
ma_sound_seek_to_pcm_frame(&sound, 0);
ma_sound_start(&sound);