89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
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#include "dump1090.h"
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static uint8_t *testdata_uc8;
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static uint16_t *testdata_sc16;
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static uint16_t *testdata_sc16q11;
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static uint16_t *outdata;
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void prepare()
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{
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srand(1);
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testdata_uc8 = calloc(MODES_MAG_BUF_SAMPLES, 2);
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testdata_sc16 = calloc(MODES_MAG_BUF_SAMPLES, 4);
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testdata_sc16q11 = calloc(MODES_MAG_BUF_SAMPLES, 4);
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outdata = calloc(MODES_MAG_BUF_SAMPLES, sizeof(uint16_t));
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for (unsigned i = 0; i < MODES_MAG_BUF_SAMPLES; ++i) {
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double I = 2.0 * rand() / (RAND_MAX + 1.0) - 1.0;
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double Q = 2.0 * rand() / (RAND_MAX + 1.0) - 1.0;
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testdata_uc8[i*2] = (uint8_t) (I * 128 + 128);
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testdata_uc8[i*2+1] = (uint8_t) (Q * 128 + 128);
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testdata_sc16[i*2] = htole16( (int16_t) (I * 32768.0) );
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testdata_sc16[i*2+1] = htole16( (int16_t) (Q * 32768.0) );
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testdata_sc16q11[i*2] = htole16( (int16_t) (I * 2048.0) );
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testdata_sc16q11[i*2+1] = htole16( (int16_t) (Q * 2048.0) );
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}
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}
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void test(const char *what, input_format_t format, void *data, double sample_rate, bool filter_dc) {
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fprintf(stderr, "Benchmarking: %s ", what);
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struct converter_state *state;
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iq_convert_fn converter = init_converter(format, sample_rate, filter_dc, &state);
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if (!converter) {
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fprintf(stderr, "Can't initialize converter\n");
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return;
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}
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struct timespec total = { 0, 0 };
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int iterations = 0;
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// Run it once to force init.
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converter(data, outdata, MODES_MAG_BUF_SAMPLES, state, NULL, NULL);
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while (total.tv_sec < 5) {
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fprintf(stderr, ".");
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struct timespec start;
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start_cpu_timing(&start);
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for (int i = 0; i < 10; ++i) {
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converter(data, outdata, MODES_MAG_BUF_SAMPLES, state, NULL, NULL);
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}
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end_cpu_timing(&start, &total);
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iterations++;
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}
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fprintf(stderr, "\n");
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cleanup_converter(state);
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double samples = 10.0 * iterations * MODES_MAG_BUF_SAMPLES;
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double nanos = total.tv_sec * 1e9 + total.tv_nsec;
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fprintf(stderr, " %.2fM samples in %.6f seconds\n",
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samples / 1e6, nanos / 1e9);
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fprintf(stderr, " %.2fM samples/second\n",
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samples / nanos * 1e3);
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}
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int main(int argc, char **argv)
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{
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MODES_NOTUSED(argc);
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MODES_NOTUSED(argv);
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prepare();
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test("SC16Q11, DC", INPUT_SC16Q11, testdata_sc16q11, 2400000, true);
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test("SC16Q11, no DC", INPUT_SC16Q11, testdata_sc16q11, 2400000, false);
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test("UC8, DC", INPUT_UC8, testdata_uc8, 2400000, true);
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test("UC8, no DC", INPUT_UC8, testdata_uc8, 2400000, false);
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test("SC16, DC", INPUT_SC16, testdata_sc16, 2400000, true);
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test("SC16, no DC", INPUT_SC16, testdata_sc16, 2400000, false);
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}
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