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feat: apply reversible linear and equal-power fades to sample selections

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This commit is contained in:
Johannes Findeisen 2026-11-06 01:06:24 +01:00
commit 15714fa764
7 changed files with 23 additions and 7 deletions
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4
tests/unit/test_sample.c
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@ -45,5 +45,9 @@ int main(void)
assert(xtc_sample_analyze(q,1,7,&after)==XTC_OK && fabs(after.mean)<.000001);
for(size_t j=0;j<8;++j){assert(xtc_sample_read(q,j,&v)==XTC_OK && fabs(v-(j>=1&&j<7 ? values[j]-stats.mean : values[j]))<.000001);}
xtc_sample_destroy(q);}
for(int mode=0;mode<4;++mode){xtc_sample *q=NULL;assert(xtc_sample_process(s,1,7,(xtc_sample_operation)(XTC_SAMPLE_FADE_IN+mode),0,&q)==XTC_OK);
for(size_t j=0;j<8;++j){double scale=1;if(j>=1&&j<7){scale=(double)(j-1)/5;if(mode==1||mode==3)scale=1-scale;if(mode>=2)scale=sin(scale*1.57079632679489661923);}assert(xtc_sample_read(q,j,&v)==XTC_OK && fabs(v-values[j]*scale)<.000001);}
xtc_sample_destroy(q);}
{xtc_sample *q=NULL;assert(xtc_sample_process(s,1,2,XTC_SAMPLE_FADE_IN,0,&q)==XTC_ERR_INVALID_ARGUMENT && q==NULL);}
xtc_sample_destroy(s);assert(unlink(path)==0 && rmdir(root)==0);puts("Sample editor core tests passed.");return 0;
}