flycast/core/oslib/audiobackend_null.cpp

46 lines
886 B
C++

#include "audiostream.h"
#include <chrono>
#include <thread>
using the_clock = std::chrono::high_resolution_clock;
static the_clock::time_point last_time;
static void null_init()
{
last_time = the_clock::time_point();
}
static void null_term()
{
}
static u32 null_push(const void* frame, u32 samples, bool wait)
{
if (wait)
{
if (last_time.time_since_epoch() != the_clock::duration::zero())
{
auto fduration = std::chrono::nanoseconds(1000000000L * samples / 44100);
auto duration = fduration - (the_clock::now() - last_time);
std::this_thread::sleep_for(duration);
last_time += fduration;
}
else
last_time = the_clock::now();
}
return 1;
}
static audiobackend_t audiobackend_null = {
"null", // Slug
"No Audio", // Name
&null_init,
&null_push,
&null_term,
nullptr
};
static bool null = RegisterAudioBackend(&audiobackend_null);