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graphics/vncserver: Implement vsync

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Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
This commit is contained in:
Huang Qi 2021-12-22 16:59:11 +08:00 committed by Alan Carvalho de Assis
parent 76bb5f5a61
commit 3ce389a62f
4 changed files with 54 additions and 0 deletions
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28
graphics/vnc/server/vnc_fbdev.c
View File

@ -447,6 +447,31 @@ static int up_updateearea(FAR struct fb_vtable_s *vtable,
return ret;
}
#ifdef CONFIG_FB_SYNC
/****************************************************************************
* Name: up_waitforsync
****************************************************************************/
static int up_waitforsync(FAR struct fb_vtable_s *vtable)
{
FAR struct vnc_fbinfo_s *fbinfo = (FAR struct vnc_fbinfo_s *)vtable;
FAR struct vnc_session_s *session;
DEBUGASSERT(fbinfo);
DEBUGASSERT(fbinfo->display >= 0 && fbinfo->display < RFB_MAX_DISPLAYS);
session = g_vnc_sessions[fbinfo->display];
if (session && session->state == VNCSERVER_RUNNING)
{
return nxsem_wait(&session->vsyncsem);
}
return ERROR;
}
#endif
/****************************************************************************
* Name: vnc_start_server
*
@ -817,6 +842,9 @@ FAR struct fb_vtable_s *up_fbgetvplane(int display, int vplane)
#ifdef CONFIG_FB_HWCURSOR
fbinfo->vtable.getcursor = up_getcursor,
fbinfo->vtable.setcursor = up_setcursor,
#endif
#ifdef CONFIG_FB_SYNC
fbinfo->vtable.waitforvsync = up_waitforsync;
#endif
fbinfo->vtable.updatearea = up_updateearea,
fbinfo->display = display;

5
graphics/vnc/server/vnc_server.c
View File

@ -279,6 +279,11 @@ int vnc_server(int argc, FAR char *argv[])
nxsem_init(&session->freesem, 0, CONFIG_VNCSERVER_NUPDATES);
nxsem_init(&session->queuesem, 0, 0);
#ifdef CONFIG_FB_SYNC
nxsem_init(&session->vsyncsem, 0, 0);
nxsem_set_protocol(&session->vsyncsem, SEM_PRIO_NONE);
#endif
/* Inform any waiter that we have started */
vnc_reset_session(session, fb, display);

3
graphics/vnc/server/vnc_server.h
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@ -235,6 +235,9 @@ struct vnc_session_s
sq_queue_t updqueue;
sem_t freesem;
sem_t queuesem;
#ifdef CONFIG_FB_SYNC
sem_t vsyncsem;
#endif
/* I/O buffers for misc network send/receive */

18
graphics/vnc/server/vnc_updater.c
View File

@ -356,6 +356,9 @@ static FAR void *vnc_updater(FAR void *arg)
FAR struct vnc_session_s *session = (FAR struct vnc_session_s *)arg;
FAR struct vnc_fbupdate_s *srcrect;
int ret;
#ifdef CONFIG_FB_SYNC
int val;
#endif
DEBUGASSERT(session != NULL);
ginfo("Updater running for Display %d\n", session->display);
@ -393,6 +396,21 @@ static FAR void *vnc_updater(FAR void *arg)
vnc_free_update(session, srcrect);
#ifdef CONFIG_FB_SYNC
ret = nxsem_get_value(&session->vsyncsem, &val);
if (ret < 0)
{
gerr("ERROR: Get vsync sem failed: %d\n", ret);
break;
}
if (sq_count(&session->updqueue) == 0 && val <= 0)
{
nxsem_post(&session->vsyncsem);
}
#endif
/* Break out and terminate the server if the encoding failed */
if (ret < 0)