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rtl_test: Support PPM error measurement on Windows. 

Signed-off-by: Steve Markgraf <steve@steve-m.de>
This commit is contained in:
Kacper Michajłow 2014-11-01 12:20:45 +01:00 committed by Steve Markgraf
parent b04c2f9f03
commit a03198c5b7
1 changed files with 46 additions and 12 deletions
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58
src/rtl_test.c
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@ -53,6 +53,21 @@
#define PPM_DURATION 10
#define PPM_DUMP_TIME 5
struct time_generic
/* holds all the platform specific values */
{
#ifndef _WIN32
time_t tv_sec;
long tv_nsec;
#else
long tv_sec;
long tv_nsec;
int init;
LARGE_INTEGER frequency;
LARGE_INTEGER ticks;
#endif
};
static enum {
NO_BENCHMARK,
TUNER_BENCHMARK,
@ -134,12 +149,15 @@ static void underrun_test(unsigned char *buf, uint32_t len, int mute)
}
#ifndef _WIN32
static int ppm_gettime(struct timespec *ts)
static int ppm_gettime(struct time_generic *tg)
{
int rv = ENOSYS;
struct timespec ts;
#ifdef __unix__
rv = clock_gettime(CLOCK_MONOTONIC, ts);
rv = clock_gettime(CLOCK_MONOTONIC, &ts);
tg->tv_sec = ts.tv_sec;
tg->tv_nsec = ts.tv_nsec;
#elif __APPLE__
struct timeval tv;
@ -149,6 +167,24 @@ static int ppm_gettime(struct timespec *ts)
#endif
return rv;
}
#endif
#ifdef _WIN32
static int ppm_gettime(struct time_generic *tg)
{
int rv;
int64_t frac;
if (!tg->init) {
QueryPerformanceFrequency(&tg->frequency);
tg->init = 1;
}
rv = QueryPerformanceCounter(&tg->ticks);
tg->tv_sec = tg->ticks.QuadPart / tg->frequency.QuadPart;
frac = (int64_t)(tg->ticks.QuadPart - (tg->tv_sec * tg->frequency.QuadPart));
tg->tv_nsec = (long)(frac * 1000000000L / (int64_t)tg->frequency.QuadPart);
return !rv;
}
#endif
static int ppm_report(uint64_t nsamples, uint64_t interval)
{
@ -165,8 +201,8 @@ static void ppm_test(uint32_t len)
static uint64_t interval = 0;
static uint64_t nsamples_total = 0;
static uint64_t interval_total = 0;
struct timespec ppm_now;
static struct timespec ppm_recent;
struct time_generic ppm_now;
static struct time_generic ppm_recent;
static enum {
PPM_INIT_NO,
PPM_INIT_DUMP,
@ -174,6 +210,7 @@ static void ppm_test(uint32_t len)
} ppm_init = PPM_INIT_NO;
ppm_gettime(&ppm_now);
if (ppm_init != PPM_INIT_RUN) {
/*
* Kyle Keen wrote:
@ -189,11 +226,11 @@ static void ppm_test(uint32_t len)
}
if (ppm_init == PPM_INIT_DUMP && ppm_recent.tv_sec < ppm_now.tv_sec)
return;
ppm_recent.tv_sec = ppm_now.tv_sec;
ppm_recent.tv_nsec = ppm_now.tv_nsec;
ppm_recent = ppm_now;
ppm_init = PPM_INIT_RUN;
return;
}
nsamples += (uint64_t)(len / 2UL);
interval = (uint64_t)(ppm_now.tv_sec - ppm_recent.tv_sec);
if (interval < ppm_duration)
@ -206,19 +243,16 @@ static void ppm_test(uint32_t len)
(int)((1000000000UL * nsamples) / interval),
ppm_report(nsamples, interval),
ppm_report(nsamples_total, interval_total));
ppm_recent.tv_sec = ppm_now.tv_sec;
ppm_recent.tv_nsec = ppm_now.tv_nsec;
ppm_recent = ppm_now;
nsamples = 0;
}
#endif
static void rtlsdr_callback(unsigned char *buf, uint32_t len, void *ctx)
{
underrun_test(buf, len, 0);
#ifndef _WIN32
if (test_mode == PPM_BENCHMARK)
ppm_test(len);
#endif
}
void e4k_benchmark(void)
@ -375,7 +409,7 @@ int main(int argc, char **argv)
verbose_reset_buffer(dev);
if ((test_mode == PPM_BENCHMARK) && !sync_mode) {
fprintf(stderr, "Reporting PPM error measurement every %i seconds...\n", ppm_duration);
fprintf(stderr, "Reporting PPM error measurement every %u seconds...\n", ppm_duration);
fprintf(stderr, "Press ^C after a few minutes.\n");
}