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feat: detect and slice audio attacks atomically and qualify sample editor workflows

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This commit is contained in:
Johannes Findeisen 2026-11-06 01:16:39 +01:00
commit 9e380d4dd0
20 changed files with 257 additions and 22 deletions
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30
tests/unit/test_sample.c
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@ -2,9 +2,11 @@
#include "xtc/xtc_sample.h"
#include <assert.h>
#include <math.h>
#include <float.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
int main(void)
{
char root[]="/tmp/xtc-sample-test-XXXXXX",path[256];float values[]={0,.25f,-.5f,.75f,0,0,.5f,-.25f};
@ -64,5 +66,33 @@ int main(void)
assert(xtc_sample_zero_crossing(s,6,1,&crossing)==XTC_OK && crossing==5);
assert(xtc_sample_zero_crossing(s,8,1,&crossing)==XTC_OK && crossing==7);
assert(xtc_sample_zero_crossing(s,0,65537,&crossing)==XTC_ERR_INVALID_ARGUMENT && crossing==7);}
{size_t positions[128]={999},count=999;assert(xtc_sample_transients(s,0,8,.4,1,positions,128,&count)==XTC_OK && count==2 && positions[0]==2 && positions[1]==6);
count=999;positions[0]=999;assert(xtc_sample_transients(s,0,8,.4,1,positions,1,&count)==XTC_ERR_CAPACITY && count==999 && positions[0]==999);
assert(xtc_sample_transients(s,0,8,.4,5,positions,128,&count)==XTC_OK && count==1 && positions[0]==2);}
{xtc_project *p=NULL,*q=NULL;xtc_audio_plan *a=NULL,*b=NULL;uint64_t t,c;float before[128],after[128];size_t cuts[]={0,4,8},made=999,tracks=0,clips=0;char song[256];
assert(xtc_project_create(&p)==XTC_OK && xtc_project_add_track(p,"Audio",&t)==XTC_OK && xtc_project_import_audio(p,t,path,10,&c)==XTC_OK);
assert(xtc_audio_plan_create(p,8000,&a)==XTC_OK && xtc_audio_plan_render(a,0,before,128)==XTC_OK);
assert(xtc_project_slice_source_frames(p,c,8000,cuts,3,&made)==XTC_OK && made==1);
assert(xtc_audio_plan_create(p,8000,&b)==XTC_OK && xtc_audio_plan_render(b,0,after,128)==XTC_OK && !memcmp(before,after,sizeof(before)));
snprintf(song,sizeof(song),"%s/slices.xtc",root);assert(xtc_project_save(p,song)==XTC_OK && xtc_project_create(&q)==XTC_OK && xtc_project_load(q,song)==XTC_OK);
assert(xtc_project_get_counts(q,&tracks,&clips)==XTC_OK && clips==2);assert(unlink(song)==0);
xtc_audio_plan_destroy(a);xtc_audio_plan_destroy(b);xtc_project_destroy(p);xtc_project_destroy(q);}
{xtc_project *p=NULL;uint64_t t,c,extra;size_t cuts[]={1000,2000},made=999,tracks,clips;
assert(xtc_project_create(&p)==XTC_OK && xtc_project_add_track(p,"Full",&t)==XTC_OK && xtc_project_add_clip(p,t,"Source",0,960,&c)==XTC_OK && xtc_project_set_clip_asset(p,c,path)==XTC_OK);
for(size_t j=1;j<XTC_PROJECT_MAX_CLIPS-1;++j)assert(xtc_project_add_clip(p,t,"Fill",10000,960,&extra)==XTC_OK);
assert(xtc_project_slice_source_frames(p,c,48000,cuts,2,&made)==XTC_ERR_CAPACITY && made==999);
assert(xtc_project_get_counts(p,&tracks,&clips)==XTC_OK && clips==XTC_PROJECT_MAX_CLIPS-1);
assert(xtc_project_add_clip(p,t,"Probe",10000,960,&extra)==XTC_OK && extra==XTC_PROJECT_MAX_CLIPS-1);xtc_project_destroy(p);}
{char big[256];unsigned char header[44];uint32_t count=(XTC_SAMPLE_MAX_FRAMES+1U)*4U;FILE *input=fopen(path,"rb"),*output;xtc_sample *q=NULL;
assert(input && fread(header,1,44,input)==44 && fclose(input)==0);snprintf(big,sizeof(big),"%s/large.wav",root);
for(unsigned int j=0;j<4;++j){header[4+j]=(unsigned char)((count+36U)>>(j*8));header[40+j]=(unsigned char)(count>>(j*8));}
output=fopen(big,"wb");assert(output && fwrite(header,1,44,output)==44 && fflush(output)==0 && ftruncate(fileno(output),(off_t)count+44)==0 && fclose(output)==0);
assert(xtc_sample_load(big,&q)==XTC_ERR_CAPACITY && q==NULL);assert(unlink(big)==0);}
{char edge[256];float large=FLT_MAX;xtc_sample *q=NULL,*result=NULL;snprintf(edge,sizeof(edge),"%s/edge.wav",root);
assert(xtc_recorder_create(edge,8000,1,&rec)==XTC_OK);xtc_recorder_push(rec,&large,1);assert(xtc_recorder_finish(rec)==XTC_OK);xtc_recorder_destroy(rec);
assert(xtc_sample_load(edge,&q)==XTC_OK && xtc_sample_process(q,0,1,XTC_SAMPLE_GAIN,2,&result)==XTC_ERR_CAPACITY && result==NULL);
assert(xtc_sample_read(q,0,&v)==XTC_OK && v==FLT_MAX);xtc_sample_destroy(q);assert(unlink(edge)==0);
large=.001f;assert(xtc_recorder_create(edge,8000,1,&rec)==XTC_OK);xtc_recorder_push(rec,&large,1);assert(xtc_recorder_finish(rec)==XTC_OK);xtc_recorder_destroy(rec);
assert(xtc_sample_load(edge,&q)==XTC_OK && xtc_sample_process(q,0,1,XTC_SAMPLE_NORMALIZE,1,&result)==XTC_ERR_CAPACITY && result==NULL);xtc_sample_destroy(q);assert(unlink(edge)==0);}
xtc_sample_destroy(s);assert(unlink(path)==0 && rmdir(root)==0);puts("Sample editor core tests passed.");return 0;
}