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ecore_drm2: Add API function to get display blanktime

This commit is contained in:
Christopher Michael 2024-01-18 07:14:59 -05:00
parent 9fe83cbdd8
commit 81f478edf5
2 changed files with 103 additions and 0 deletions
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1
src/lib/ecore_drm2/Ecore_Drm2.h
View File

@ -118,6 +118,7 @@ EAPI void ecore_drm2_display_dpi_get(Ecore_Drm2_Display *disp, int *xdpi, int *y
EAPI Ecore_Drm2_Display *ecore_drm2_display_find(Ecore_Drm2_Device *dev, int x, int y);
EAPI void ecore_drm2_display_user_data_set(Ecore_Drm2_Display *disp, void *data);
EAPI void *ecore_drm2_display_user_data_get(Ecore_Drm2_Display *disp);
EAPI Eina_Bool ecore_drm2_display_blanktime_get(Ecore_Drm2_Display *disp, int seq, long *sec, long *usec);
# endif

102
src/lib/ecore_drm2/ecore_drm2_displays.c
View File

@ -507,6 +507,50 @@ _ecore_drm2_display_state_thread_notify(void *data EINA_UNUSED, Ecore_Thread *th
free(msg);
}
static unsigned int
_ecore_drm2_display_vblank_pipe(Ecore_Drm2_Display *disp)
{
if (!disp->crtc) return 0;
if (disp->crtc->pipe > 1)
{
return (disp->crtc->pipe << DRM_VBLANK_HIGH_CRTC_SHIFT) &
DRM_VBLANK_HIGH_CRTC_MASK;
}
else if (disp->crtc->pipe > 0)
return DRM_VBLANK_SECONDARY;
else
return 0;
}
static void
_ecore_drm2_display_clock_read(Ecore_Drm2_Display *disp, struct timespec *tsnow)
{
int ret;
ret = clock_gettime(disp->dev->clock_id, tsnow);
if (ret < 0)
{
tsnow->tv_sec = 0;
tsnow->tv_nsec = 0;
WRN("Failed to read display clock %#x: '%s' (%d)",
disp->dev->clock_id, strerror(errno), errno);
}
}
static void
_ecore_drm2_display_msc_update(Ecore_Drm2_Display *disp, unsigned int sequence)
{
uint32_t mh;
mh = disp->msc >> 32;
if (sequence < (disp->msc & 0xffffffff))
mh++;
disp->msc = ((uint64_t)mh << 32) + sequence;
}
Eina_Bool
_ecore_drm2_displays_create(Ecore_Drm2_Device *dev)
{
@ -1003,3 +1047,61 @@ ecore_drm2_display_user_data_get(Ecore_Drm2_Display *disp)
EINA_SAFETY_ON_NULL_RETURN_VAL(disp, NULL);
return disp->user_data;
}
EAPI Eina_Bool
ecore_drm2_display_blanktime_get(Ecore_Drm2_Display *disp, int seq, long *sec, long *usec)
{
drmVBlank vbl;
int ret;
EINA_SAFETY_ON_NULL_RETURN_VAL(disp, EINA_FALSE);
EINA_SAFETY_ON_NULL_RETURN_VAL(sec, EINA_FALSE);
EINA_SAFETY_ON_NULL_RETURN_VAL(usec, EINA_FALSE);
memset(&vbl, 0, sizeof(vbl));
vbl.request.type = DRM_VBLANK_RELATIVE;
vbl.request.type |= _ecore_drm2_display_vblank_pipe(disp);
vbl.request.sequence = seq;
vbl.request.signal = 0;
/* try to get timestamp from drm vblank query */
ret = sym_drmWaitVBlank(disp->dev->fd, &vbl);
/* ret or zero timestamp is failure to get valid timestamp */
if ((ret == 0) && (vbl.reply.tval_sec > 0 || vbl.reply.tval_usec > 0))
{
struct timespec ts, tsnow, vblnow;
int64_t nsec, rnsec;
ts.tv_sec = vbl.reply.tval_sec;
ts.tv_nsec = vbl.reply.tval_usec * 1000;
/* read clock */
_ecore_drm2_display_clock_read(disp, &tsnow);
vblnow.tv_sec = tsnow.tv_sec - ts.tv_sec;
vblnow.tv_nsec = tsnow.tv_nsec - ts.tv_nsec;
if (vblnow.tv_nsec < 0)
{
vblnow.tv_sec--;
vblnow.tv_nsec += 1000000000;
}
rnsec = (1000000000000LL / disp->state.current->mode->refresh);
nsec = (int64_t)vblnow.tv_sec * 1000000000 + vblnow.tv_nsec;
if (nsec < rnsec)
{
/* update msc */
_ecore_drm2_display_msc_update(disp, vbl.reply.sequence);
return EINA_TRUE;
}
else
{
/* TODO: Do we need to provide a timestamp using pageflip fallback ? */
}
}
*sec = vbl.reply.tval_sec;
*usec = vbl.reply.tval_usec;
return EINA_TRUE;
}