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Add ma_engine_sound_set_fade_in/out().

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As of this commit, ma_engine_sound_set_fade_out() is not fully
implemented pending the writing of some additional infrastructure.
This commit is contained in:
David Reid
2020-08-09 17:01:18 +10:00
parent f3f11b4133
commit 6e32cc22ff
1 changed files with 25 additions and 0 deletions
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research/ma_engine.h
+25
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@@ -963,6 +963,8 @@ MA_API ma_result ma_engine_sound_set_position(ma_engine* pEngine, ma_sound* pSou
MA_API ma_result ma_engine_sound_set_rotation(ma_engine* pEngine, ma_sound* pSound, ma_quat rotation);
MA_API ma_result ma_engine_sound_set_effect(ma_engine* pEngine, ma_sound* pSound, ma_effect* pEffect);
MA_API ma_result ma_engine_sound_set_looping(ma_engine* pEngine, ma_sound* pSound, ma_bool32 isLooping);
MA_API ma_result ma_engine_sound_set_fade_in(ma_engine* pEngine, ma_sound* pSound, ma_uint64 fadeTimeInMilliseconds);
MA_API ma_result ma_engine_sound_set_fade_out(ma_engine* pEngine, ma_sound* pSound, ma_uint64 fadeTimeInMilliseconds);
MA_API ma_bool32 ma_engine_sound_at_end(ma_engine* pEngine, const ma_sound* pSound);
MA_API ma_result ma_engine_sound_seek_to_pcm_frame(ma_engine* pEngine, ma_sound* pSound, ma_uint64 frameIndex); /* Just a wrapper around ma_data_source_seek_to_pcm_frame(). */
MA_API ma_result ma_engine_play_sound(ma_engine* pEngine, const char* pFilePath, ma_sound_group* pGroup); /* Fire and forget. */
@@ -5780,6 +5782,29 @@ MA_API ma_result ma_engine_sound_set_looping(ma_engine* pEngine, ma_sound* pSoun
return MA_SUCCESS;
}
MA_API ma_result ma_engine_sound_set_fade_in(ma_engine* pEngine, ma_sound* pSound, ma_uint64 fadeTimeInMilliseconds)
{
if (pEngine == NULL || pSound == NULL) {
return MA_INVALID_ARGS;
}
return ma_dual_fader_set_fade(&pSound->effect.fader, 0, 0, 1, 0, (fadeTimeInMilliseconds * pSound->effect.fader.config.sampleRate) / 1000);
}
MA_API ma_result ma_engine_sound_set_fade_out(ma_engine* pEngine, ma_sound* pSound, ma_uint64 fadeTimeInMilliseconds)
{
if (pEngine == NULL || pSound == NULL) {
return MA_INVALID_ARGS;
}
/*
Setting the fade out is annoying because we may not know the length of the sound. The only reliable way of doing this is to do it when some
frames are available, at which point the length of the data source should be known.
*/
return MA_SUCCESS;
}
MA_API ma_bool32 ma_engine_sound_at_end(ma_engine* pEngine, const ma_sound* pSound)
{
if (pEngine == NULL || pSound == NULL) {