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// This file is part of the 64k demo project.
// It performs an end-to-end test of the spectool's analysis capability.
// Generates a test WAV, analyzes it, and verifies the resulting .spec file.
#include "audio/audio.h"
#include <assert.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "miniaudio.h"
// Redefine SpecHeader to avoid including spectool internals if possible,
// but for an E2E test we need to know the format.
struct SpecHeader {
char magic[4];
int32_t version;
int32_t dct_size;
int32_t num_frames;
};
void generate_test_wav(const char* path, int duration_seconds) {
ma_encoder_config config =
ma_encoder_config_init(ma_encoding_format_wav, ma_format_f32, 1, 32000);
ma_encoder encoder;
if (ma_encoder_init_file(path, &config, &encoder) != MA_SUCCESS) {
printf("Failed to create test WAV file.\n");
exit(1);
}
int num_frames = 32000 * duration_seconds;
for (int i = 0; i < num_frames; ++i) {
float sample = 0.5f * sinf(2.0f * 3.14159f * 440.0f * i / 32000.0f);
ma_encoder_write_pcm_frames(&encoder, &sample, 1, NULL);
}
ma_encoder_uninit(&encoder);
}
int main() {
const char* test_wav = "test_input.wav";
const char* test_spec = "test_output.spec";
printf("Generating test WAV...\n");
generate_test_wav(test_wav, 1);
printf("Running spectool analyze...\n");
char command[256];
snprintf(command, sizeof(command), "./spectool analyze %s %s", test_wav,
test_spec);
int ret = system(command);
assert(ret == 0);
printf("Verifying .spec file...\n");
FILE* f = fopen(test_spec, "rb");
assert(f != NULL);
SpecHeader header;
size_t read = fread(&header, sizeof(SpecHeader), 1, f);
assert(read == 1);
assert(strncmp(header.magic, "SPEC", 4) == 0);
assert(header.version == 1);
assert(header.dct_size == 512);
assert(header.num_frames > 0);
fclose(f);
printf("Spectool E2E test PASSED\n");
// Clean up
remove(test_wav);
remove(test_spec);
return 0;
}
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