@class AVMutableScheduledAudioParametersInternal; @interface AVMutableScheduledAudioParameters : AVScheduledAudioParameters { AVMutableScheduledAudioParametersInternal *_mutableScheduledParametersInternal; } + (id)scheduledAudioParameters; - (id)copyWithZone:(struct _NSZone { } *)a0; - (void)_setVolumeRampFromStartVolume:(float)a0 toEndVolume:(float)a1 timeRange:(struct { struct { long long x0; int x1; unsigned int x2; long long x3; } x0; struct { long long x0; int x1; unsigned int x2; long long x3; } x1; })a2 rampMode:(long long)a3; - (void)setVolume:(float)a0 atTime:(struct { long long x0; int x1; unsigned int x2; long long x3; })a1; - (void)setVolumeRampFromStartVolume:(float)a0 toEndVolume:(float)a1 timeRange:(struct { struct { long long x0; int x1; unsigned int x2; long long x3; } x0; struct { long long x0; int x1; unsigned int x2; long long x3; } x1; })a2; - (void)setVolumeRampFromStartVolume:(float)a0 toEndVolume:(float)a1 timeRange:(struct { struct { long long x0; int x1; unsigned int x2; long long x3; } x0; struct { long long x0; int x1; unsigned int x2; long long x3; } x1; })a2 rampMode:(long long)a3; @end