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feat(midi): import Standard MIDI Files with transactional undo (phase 104)

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Johannes Findeisen 2026-11-06 02:28:25 +01:00
commit f37ad8987a
9 changed files with 234 additions and 5 deletions
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41
tests/unit/test_midi_file.c
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@ -1,5 +1,6 @@
#define _POSIX_C_SOURCE 200809L
#include "xtc/xtc_midi_file.h"
#include "xtc/xtc_mixer.h"
#include "../../src/midi/output.h"
#include <assert.h>
#include <stdlib.h>
@ -24,6 +25,39 @@ static void output_tests(void)
assert(xtc_midi_output_events(plan,1,4,events,&count)==XTC_OK && count==1 && events[0].type==XTC_MIDI_NOTE_OFF && events[0].offset==3);
xtc_midi_output_destroy(plan);xtc_project_destroy(p);
}
static void write_bytes(const char *path,const unsigned char *data,size_t size)
{
FILE *f=fopen(path,"wb");assert(f && fwrite(data,1,size,f)==size && fclose(f)==0);
}
static void import_tests(void)
{
static const unsigned char song[]={
'M','T','h','d',0,0,0,6,0,1,0,2,1,0xe0,
'M','T','r','k',0,0,0,12,0,0xff,0x51,3,7,0xa1,0x20,0x87,0x40,0xff,0x2f,0,
'M','T','r','k',0,0,0,27,
0,0xc1,10,0,0xf0,2,1,0xf7,
0,0x91,60,90,0,64,80,0x81,0x70,60,0,0,64,0,0x81,0x70,0xff,0x2f,0
};
unsigned char bad[sizeof(song)];char path[]="/tmp/xtc-midi-import-XXXXXX";int fd=mkstemp(path);
xtc_project *p=NULL;uint64_t t,c=999;xtc_clip_info clip;xtc_note_info note;size_t tracks,clips,notes;
assert(fd>=0);close(fd);assert(xtc_project_create(&p)==XTC_OK && xtc_project_add_track(p,"Import",&t)==XTC_OK);
assert(xtc_project_set_tempo(p,135000)==XTC_OK);write_bytes(path,song,sizeof(song));
assert(xtc_project_import_midi(p,t,3840,path,&c)==XTC_OK && xtc_project_tempo(p)==135000);
assert(xtc_project_find_clip(p,c,&clip)==XTC_OK && clip.start_tick==3840 && clip.length_tick==1920);
assert(xtc_project_note_count(p,&notes)==XTC_OK && notes==2);
assert(xtc_project_get_note(p,0,&note)==XTC_OK && note.start_tick==0 && note.length_tick==480 && note.channel==1 && note.pitch==60 && note.velocity==90);
assert(xtc_project_get_note(p,1,&note)==XTC_OK && note.pitch==64 && note.length_tick==480 && note.velocity==80);
for(size_t size=0;size<sizeof(song);++size){
c=999;write_bytes(path,song,size);assert(xtc_project_import_midi(p,t,0,path,&c)!=XTC_OK && c==999);
assert(xtc_project_get_counts(p,&tracks,&clips)==XTC_OK && tracks==1 && clips==1 && xtc_project_note_count(p,&notes)==XTC_OK && notes==2);
}
memcpy(bad,song,sizeof(song));bad[12]=0xe7;write_bytes(path,bad,sizeof(bad));assert(xtc_project_import_midi(p,t,0,path,&c)==XTC_ERR_UNSUPPORTED);
memcpy(bad,song,sizeof(song));bad[9]=2;write_bytes(path,bad,sizeof(bad));assert(xtc_project_import_midi(p,t,0,path,&c)==XTC_ERR_UNSUPPORTED);
memcpy(bad,song,sizeof(song));bad[sizeof(bad)-6]=0x90;write_bytes(path,bad,sizeof(bad));assert(xtc_project_import_midi(p,t,0,path,&c)!=XTC_OK);
write_bytes(path,song,sizeof(song));assert(xtc_project_import_midi(p,t,XTC_PROJECT_MAX_TICK-10,path,&c)==XTC_ERR_CAPACITY && c==999);
{uint64_t bus;assert(xtc_project_add_bus(p,"Bus",&bus)==XTC_OK && xtc_project_import_midi(p,bus,0,path,&c)==XTC_ERR_INVALID_STATE);}
xtc_project_destroy(p);unlink(path);
}
int main(void)
{
xtc_project *p=NULL;uint64_t t,c,n,audio;char path[]="/tmp/xtc-midi-file-XXXXXX";int fd=mkstemp(path);FILE *f;unsigned char bytes[1024];size_t size,at=22,notes=0;unsigned int tick=0;
@ -48,5 +82,10 @@ int main(void)
assert(xtc_project_add_clip(p,t,"Audio",3840,960,&audio)==XTC_OK && xtc_project_export_midi_clip(p,audio,path)==XTC_ERR_INVALID_STATE);
{unsigned char preserved[1024];f=fopen(path,"rb");assert(f && fread(preserved,1,sizeof(preserved),f)==size && !memcmp(bytes,preserved,size));fclose(f);}
assert(xtc_project_export_midi_clip(p,c,"/no-such-xtc-directory/test.mid")==XTC_ERR_IO);
xtc_project_destroy(p);unlink(path);output_tests();puts("MIDI file and bounded external scheduling checks passed.");return 0;
{uint64_t imported;xtc_note_info note;xtc_clip_info clip;
assert(xtc_project_import_midi(p,t,7680,path,&imported)==XTC_OK && xtc_project_tempo(p)==150000);
assert(xtc_project_find_clip(p,imported,&clip)==XTC_OK && clip.length_tick==960 && !clip.offset_tick);
assert(xtc_project_get_note(p,3,&note)==XTC_OK && note.start_tick==0 && note.length_tick==240 && note.pitch==60 && note.channel==2);
assert(xtc_project_get_note(p,4,&note)==XTC_OK && note.start_tick==240 && note.length_tick==720 && note.pitch==64 && note.channel==3);}
xtc_project_destroy(p);unlink(path);output_tests();import_tests();puts("MIDI file and bounded external scheduling checks passed.");return 0;
}