sointu/tests/test_render_samples.c

55 lines
1.8 KiB
C

#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <sointu/sointu.h>
#if UINTPTR_MAX == 0xffffffff // are we 32-bit?
#if defined(__clang__) || defined(__GNUC__)
#define CALLCONV __attribute__ ((stdcall))
#elif defined(_WIN32)
#define CALLCONV __stdcall // on 32-bit platforms, we just use stdcall, as all know it
#endif
#else // 64-bit
#define CALLCONV // the asm will use honor honor correct x64 ABI on all 64-bit platforms
#endif
#define BPM 100
#define SAMPLE_RATE 44100
#define TOTAL_ROWS 16
#define SAMPLES_PER_ROW SAMPLE_RATE * 4 * 60 / (BPM * 16)
const int su_max_samples = SAMPLES_PER_ROW * TOTAL_ROWS;
void CALLCONV su_render_song(float* buffer) {
Synth* synth;
const unsigned char commands[] = { su_envelope_id, // MONO
su_envelope_id, // MONO
su_out_id + 1, // STEREO
su_advance_id };// MONO
const unsigned char values[] = { 64, 64, 64, 80, 128, // envelope 1
95, 64, 64, 80, 128, // envelope 2
128};
int retval;
int samples;
int time;
// initialize Synth
synth = (Synth*)malloc(sizeof(Synth));
memset(synth, 0, sizeof(Synth));
memcpy(synth->Commands, commands, sizeof(commands));
memcpy(synth->Values, values, sizeof(values));
synth->NumVoices = 1;
synth->Polyphony = 0;
synth->RandSeed = 1;
// triger first voice
synth->SynthWrk.Voices[0].Note = 64;
samples = su_max_samples / 2;
time = INT32_MAX;
retval = su_render(synth, buffer, &samples, &time);
synth->SynthWrk.Voices[0].Release++;
buffer = buffer + su_max_samples;
samples = su_max_samples / 2;
time = INT32_MAX;
retval = su_render(synth, buffer, &samples, &time);
free(synth);
return;
}