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wait (select) device in grab function

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Maxim Devaev
2024-03-02 09:33:45 +02:00
parent 85308e48fd
commit a00f49331c
4 changed files with 137 additions and 131 deletions
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27
src/v4p/main.c
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@@ -216,30 +216,27 @@ static void _main_loop(void) {
continue;
}
switch (us_device_wait_buffer(dev)) {
case 0: break; // New frame
us_hw_buffer_s *hw;
const int buf_index = us_device_grab_buffer(dev, &hw);
switch (buf_index) {
case -3: continue; // Broken frame
case -2: // Persistent timeout
if (us_drm_expose(drm, US_DRM_EXPOSE_NO_SIGNAL, NULL, 0) < 0) {
_slowdown();
continue;
}
default: goto close; // Error
case -1: goto close; // Any error
}
assert(buf_index >= 0);
us_hw_buffer_s *hw;
const int buf_index = us_device_grab_buffer(dev, &hw);
if (buf_index >= 0) {
const int exposed = us_drm_expose(drm, US_DRM_EXPOSE_FRAME, &hw->raw, dev->run->hz);
if (us_device_release_buffer(dev, hw) < 0) {
goto close;
}
if (exposed < 0) {
_slowdown();
continue;
}
} else if (buf_index != -2) { // -2 for broken frame
const int exposed = us_drm_expose(drm, US_DRM_EXPOSE_FRAME, &hw->raw, dev->run->hz);
if (us_device_release_buffer(dev, hw) < 0) {
goto close;
}
if (exposed < 0) {
_slowdown();
continue;
}
}
close: