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screencast: only end the fps measurement when it was started before

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Sometimes it can happen that the first frame of the active stream
triggers the renegotiation and destroy the frame without copy and with
that starting the fps_limit counter. This triggers an assert in
fps_limit_measure_end. To avoid it, we only engage the fps_limiter after
a frame was copied successfully.
This commit is contained in:
columbarius 2021-07-06 15:05:12 +02:00
parent 27d1e42ec0
commit 1534a6a17e
2 changed files with 11 additions and 4 deletions
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1
include/screencast_common.h
View file

@ -108,6 +108,7 @@ struct xdpw_screencast_instance {
bool with_cursor;
int err;
bool quit;
bool copied;
// fps limit
struct fps_limit_state fps_limit;

14
src/screencast/wlr_screencast.c
View file

@ -34,10 +34,15 @@ void xdpw_wlr_frame_free(struct xdpw_screencast_instance *cast) {
}
if (cast->pwr_stream_state) {
uint64_t delay_ns = fps_limit_measure_end(&cast->fps_limit, cast->framerate);
if (delay_ns > 0) {
xdpw_add_timer(cast->ctx->state, delay_ns,
(xdpw_event_loop_timer_func_t) xdpw_wlr_register_cb, cast);
if (cast->copied) {
uint64_t delay_ns = fps_limit_measure_end(&cast->fps_limit, cast->framerate);
cast->copied = false;
if (delay_ns > 0) {
xdpw_add_timer(cast->ctx->state, delay_ns,
(xdpw_event_loop_timer_func_t) xdpw_wlr_register_cb, cast);
} else {
xdpw_wlr_register_cb(cast);
}
} else {
xdpw_wlr_register_cb(cast);
}
@ -134,6 +139,7 @@ static void wlr_frame_ready(void *data, struct zwlr_screencopy_frame_v1 *frame,
cast->current_frame.tv_sec = ((((uint64_t)tv_sec_hi) << 32) | tv_sec_lo);
cast->current_frame.tv_nsec = tv_nsec;
cast->copied = true;
xdpw_pwr_enqueue_buffer(cast);