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fix low quality not working in acquireDirect

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performance may be reduced
This commit is contained in:
tildearrow 2025-04-07 23:12:27 -05:00
parent 584305f1fa
commit 032ff82955
4 changed files with 22 additions and 23 deletions
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5
extern/blip_buf/blip_buf.c vendored
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@ -299,7 +299,7 @@ possibly-wider fixed_t. On 32-bit platforms, this is likely more efficient.
And by having pre_shift 32, a 32-bit platform can easily do the shift by
simply ignoring the low half. */
void blip_add_delta( blip_t* m, unsigned time, int delta )
void blip_add_delta_slow( blip_t* m, unsigned time, int delta )
{
unsigned fixed = (unsigned) ((time * m->factor + m->offset) >> pre_shift);
buf_t* out = SAMPLES( m ) + m->avail + (fixed >> frac_bits);
@ -350,3 +350,6 @@ void blip_add_delta_fast( blip_t* m, unsigned time, int delta )
out [7] += delta * delta_unit - delta2;
out [8] += delta2;
}
/* (tildearrow) ability to change blip_add_delta at runtime */
void (*blip_add_delta)( blip_t*, unsigned int, int )=blip_add_delta_slow;

5
extern/blip_buf/blip_buf.h vendored
View file

@ -35,8 +35,11 @@ blip_max_ratio = 1 << 20 };
/** Clears entire buffer. Afterwards, blip_samples_avail() == 0. */
void blip_clear( blip_t* );
/** (tildearrow) ability to change blip_add_delta at runtime */
extern void (*blip_add_delta)( blip_t*, unsigned int, int );
/** Adds positive/negative delta into buffer at specified clock time. */
void blip_add_delta( blip_t*, unsigned int clock_time, int delta );
void blip_add_delta_slow( blip_t*, unsigned int clock_time, int delta );
/** Same as blip_add_delta(), but uses faster, lower-quality synthesis. */
void blip_add_delta_fast( blip_t*, unsigned int clock_time, int delta );