void ChannelInternalState::FadeOut(int milliseconds) {
int channels_halted;
if (IsStream()) {
#ifdef PINDROP_MULTISTREAM
channels_halted = Mix_FadeOutMusicCh(channel_id_, milliseconds);
#else
channels_halted = Mix_FadeOutMusic(milliseconds);
#endif // PINDROP_MULTISTREAM
} else {
channels_halted = Mix_FadeOutChannel(channel_id_, milliseconds);
}
if (channels_halted == 0) {
SDL_LogError(SDL_LOG_CATEGORY_ERROR, "Error halting channel %i\n");
}
}
/* Fade out a channel and then stop it automatically */
int Mix_FadeOutChannel(int which, int ms)
{
int status;
status = 0;
if ( audio_opened ) {
if ( which == -1 ) {
int i;
for ( i=0; i<num_channels; ++i ) {
status += Mix_FadeOutChannel(i, ms);
}
} else if ( which < num_channels ) {
SDL_LockAudio();
if ( mix_channel[which].playing &&
(mix_channel[which].volume > 0) &&
(mix_channel[which].fading != MIX_FADING_OUT) ) {
if (mix_channel[which].is_music) {
Mix_FadeOutMusicCh(ms, which);
} else {
mix_channel[which].sound->fade_volume = mix_channel[which].volume;
mix_channel[which].fading = MIX_FADING_OUT;
mix_channel[which].sound->fade_length = (Uint32) ms;
mix_channel[which].sound->ticks_fade = SDL_GetTicks();
/* only change fade_volume_reset if we're not fading. */
if (mix_channel[which].fading == MIX_NO_FADING) {
mix_channel[which].fade_volume_reset = mix_channel[which].volume;
}
}
++status;
}
SDL_UnlockAudio();
}
}
return(status);
}
