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drivers/fb: add fboverlay pandisplay & display area ioctl 

1. support doublebuffer swtich for overlay layer
2. Add display area ioctl to scale the active area of the overlay layer
   to a specific region on the LCD through hardware.

Signed-off-by: rongyichang <rongyichang@xiaomi.com>
This commit is contained in:
rongyichang 2023-06-20 18:02:29 +08:00 committed by Xiang Xiao
parent 83a3b969a3
commit 9e4a9fe32b
2 changed files with 63 additions and 11 deletions
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23
drivers/video/fb.c
View File

@ -592,6 +592,17 @@ static int fb_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
}
break;
case FBIOSET_DESTAREA: /* Set destination area on the primary FB */
{
FAR struct fb_overlayinfo_s *oinfo =
(FAR struct fb_overlayinfo_s *)((uintptr_t)arg);
DEBUGASSERT(oinfo != 0 && fb->vtable != NULL &&
fb->vtable->setdestarea != NULL);
ret = fb->vtable->setdestarea(fb->vtable, oinfo);
}
break;
#ifdef CONFIG_FB_OVERLAY_BLIT
case FBIOSET_BLIT: /* Blit operation between video overlays */
{
@ -615,6 +626,18 @@ static int fb_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
}
break;
#endif
case FBIOPAN_OVERLAY:
{
FAR struct fb_overlayinfo_s *oinfo =
(FAR struct fb_overlayinfo_s *)((uintptr_t)arg);
DEBUGASSERT(oinfo != 0 && fb->vtable != NULL &&
fb->vtable->panoverlay != NULL);
ret = fb->vtable->panoverlay(fb->vtable, oinfo);
}
break;
#endif /* CONFIG_FB_OVERLAY */
case FBIOSET_POWER:

51
include/nuttx/video/fb.h
View File

@ -261,42 +261,52 @@
# define FBIOSET_AREA _FBIOC(0x000f) /* Set active overlay area
* Argument: read-only struct
* fb_overlayinfo_s */
# define FBIOSET_DESTAREA _FBIOC(0x0010) /* Set destination area on
* primary FB.
* Argument: read-only struct
* fb_overlayinfo_s */
#ifdef CONFIG_FB_OVERLAY_BLIT
# define FBIOSET_BLIT _FBIOC(0x0010) /* Blit area between overlays
# define FBIOSET_BLIT _FBIOC(0x0011) /* Blit area between overlays
* Argument: read-only struct
* fb_overlayblit_s */
# define FBIOSET_BLEND _FBIOC(0x0011) /* Blend area between overlays
# define FBIOSET_BLEND _FBIOC(0x0012) /* Blend area between overlays
* Argument: read-only struct
* fb_overlayblend_s */
#endif
#define FBIOPAN_OVERLAY _FBIOC(0x0013) /* Pan display for overlay
* Argument: read-only struct
* fb_overlayinfo_s */
#endif /* CONFIG_FB_OVERLAY */
/* Specific Controls ********************************************************/
#define FBIOSET_POWER _FBIOC(0x0012) /* Set panel power
#define FBIOSET_POWER _FBIOC(0x0014) /* Set panel power
* Argument: int */
#define FBIOGET_POWER _FBIOC(0x0013) /* Get panel current power
#define FBIOGET_POWER _FBIOC(0x0015) /* Get panel current power
* Argument: int* */
#define FBIOSET_FRAMERATE _FBIOC(0x0014) /* Set frame rate
#define FBIOSET_FRAMERATE _FBIOC(0x0016) /* Set frame rate
* Argument: int */
#define FBIOGET_FRAMERATE _FBIOC(0x0015) /* Get frame rate
#define FBIOGET_FRAMERATE _FBIOC(0x0017) /* Get frame rate
* Argument: int* */
#define FBIOPAN_DISPLAY _FBIOC(0x0016) /* Pan display
#define FBIOPAN_DISPLAY _FBIOC(0x0018) /* Pan display
* Argument: read-only struct
* fb_planeinfo_s* */
#define FBIO_CLEARNOTIFY _FBIOC(0x0017) /* Clear notify signal */
#define FBIO_CLEARNOTIFY _FBIOC(0x0019) /* Clear notify signal */
#define FBIOSET_VSYNCOFFSET _FBIOC(0x0018) /* Set VSync offset in usec
#define FBIOSET_VSYNCOFFSET _FBIOC(0x001a) /* Set VSync offset in usec
* Argument: int */
/* Linux Support ************************************************************/
#define FBIOGET_VSCREENINFO _FBIOC(0x0019) /* Get video variable info */
#define FBIOGET_VSCREENINFO _FBIOC(0x001b) /* Get video variable info */
/* Argument: writable struct
* fb_var_screeninfo */
#define FBIOGET_FSCREENINFO _FBIOC(0x001a) /* Get video fix info */
#define FBIOGET_FSCREENINFO _FBIOC(0x001c) /* Get video fix info */
/* Argument: writable struct
* fb_fix_screeninfo */
@ -536,11 +546,16 @@ struct fb_overlayinfo_s
fb_coord_t stride; /* Length of a line in bytes */
uint8_t overlay; /* Overlay number */
uint8_t bpp; /* Bits per pixel */
uint32_t xres_virtual; /* Virtual Horizontal resolution in pixel columns */
uint32_t yres_virtual; /* Virtual Vertical resolution in pixel rows */
uint32_t xoffset; /* Offset from virtual to visible resolution */
uint32_t yoffset; /* Offset from virtual to visible resolution */
uint8_t blank; /* Blank or unblank */
uint32_t chromakey; /* Chroma key argb8888 formatted */
uint32_t color; /* Color argb8888 formatted */
struct fb_transp_s transp; /* Transparency */
struct fb_area_s sarea; /* Selected area within the overlay */
struct fb_area_s darea; /* Destination area on the primary FB */
uint32_t accl; /* Supported hardware acceleration */
};
@ -758,6 +773,13 @@ struct fb_vtable_s
int (*setarea)(FAR struct fb_vtable_s *vtable,
FAR const struct fb_overlayinfo_s *oinfo);
/* The following allows to set the display area for subsequently overlay
* operations.
*/
int (*setdestarea)(FAR struct fb_vtable_s *vtable,
FAR const struct fb_overlayinfo_s *oinfo);
# ifdef CONFIG_FB_OVERLAY_BLIT
/* The following are provided only if the video hardware supports
* blit operation between overlays.
@ -773,6 +795,13 @@ struct fb_vtable_s
int (*blend)(FAR struct fb_vtable_s *vtable,
FAR const struct fb_overlayblend_s *blend);
# endif
/* The following allows to pan display for multiple buffers.
*/
int (*panoverlay)(FAR struct fb_vtable_s *vtable,
FAR const struct fb_overlayinfo_s *oinfo);
#endif
/* Pan display for multiple buffers. */