diff options
Diffstat (limited to 'src/rmd_get_frame.c')
-rw-r--r-- | src/rmd_get_frame.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/src/rmd_get_frame.c b/src/rmd_get_frame.c index 4f8343a..5c6e800 100644 --- a/src/rmd_get_frame.c +++ b/src/rmd_get_frame.c @@ -332,9 +332,22 @@ void *rmdGetFrame(ProgData *pdata) { unsigned time_frameno; pthread_mutex_lock(&pdata->time_mutex); - while (pdata->capture_frameno >= pdata->time_frameno) + while (pdata->capture_frameno >= pdata->time_frameno) { pthread_cond_wait(&pdata->time_cond, &pdata->time_mutex); + if (pdata->capture_frameno >= pdata->time_frameno) { + /* *Likely* paused, but could be a spurious wakeup. + * either way, it's harmless to service the event loop + * before waiting again. This is how the timer keeps + * the event loop serviced by signaling us without + * advancing time_frameno. + */ + pthread_mutex_unlock(&pdata->time_mutex); + rmdEventLoop(pdata); + pthread_mutex_lock(&pdata->time_mutex); + } + } + time_frameno = pdata->time_frameno; pthread_mutex_unlock(&pdata->time_mutex); @@ -342,17 +355,6 @@ void *rmdGetFrame(ProgData *pdata) { //events (if not full_shots) rmdEventLoop(pdata); - if (pdata->paused) { - /* This is a bit janky, but there's need to service the event loop - * when paused, so instead of blocking on pause_cond, a short sleep - * is performed. - * Since the timer keeps running currently when paused, the above - * cond_wait() will never prevent us from reaching here. - */ - nanosleep(&(struct timespec){ .tv_nsec = 50000000 }, NULL); - continue; - } - //switch back and front buffers (full_shots only) if (d_buff) img_sel = img_sel ? 0 : 1; |