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Improve frametiming for linux capture (#2333)

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This commit is contained in:
Gilles Schintgen
2024-04-13 01:36:56 +02:00
committed by GitHub
parent 5c1bad7155
commit fcd4c07bd0
6 changed files with 93 additions and 44 deletions
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30
src/platform/linux/kmsgrab.cpp
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@@ -1193,17 +1193,22 @@ namespace platf {
capture(const push_captured_image_cb_t &push_captured_image_cb, const pull_free_image_cb_t &pull_free_image_cb, bool *cursor) override {
auto next_frame = std::chrono::steady_clock::now();
sleep_overshoot_tracker.reset();
while (true) {
auto now = std::chrono::steady_clock::now();
if (next_frame > now) {
std::this_thread::sleep_for((next_frame - now) / 3 * 2);
std::this_thread::sleep_for(next_frame - now);
}
while (next_frame > now) {
std::this_thread::sleep_for(1ns);
now = std::chrono::steady_clock::now();
now = std::chrono::steady_clock::now();
std::chrono::nanoseconds overshoot_ns = now - next_frame;
log_sleep_overshoot(overshoot_ns);
next_frame += delay;
if (next_frame < now) { // some major slowdown happened; we couldn't keep up
next_frame = now + delay;
}
next_frame = now + delay;
std::shared_ptr<platf::img_t> img_out;
auto status = snapshot(pull_free_image_cb, img_out, 1000ms, *cursor);
@@ -1412,17 +1417,22 @@ namespace platf {
capture(const push_captured_image_cb_t &push_captured_image_cb, const pull_free_image_cb_t &pull_free_image_cb, bool *cursor) {
auto next_frame = std::chrono::steady_clock::now();
sleep_overshoot_tracker.reset();
while (true) {
auto now = std::chrono::steady_clock::now();
if (next_frame > now) {
std::this_thread::sleep_for((next_frame - now) / 3 * 2);
std::this_thread::sleep_for(next_frame - now);
}
while (next_frame > now) {
std::this_thread::sleep_for(1ns);
now = std::chrono::steady_clock::now();
now = std::chrono::steady_clock::now();
std::chrono::nanoseconds overshoot_ns = now - next_frame;
log_sleep_overshoot(overshoot_ns);
next_frame += delay;
if (next_frame < now) { // some major slowdown happened; we couldn't keep up
next_frame = now + delay;
}
next_frame = now + delay;
std::shared_ptr<platf::img_t> img_out;
auto status = snapshot(pull_free_image_cb, img_out, 1000ms, *cursor);