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VNC: BPP as presented to application must match configuration; we will need to do conversions as necesasry for the BPP of the remote framebuffer

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This commit is contained in:
Gregory Nutt 2016-04-16 18:11:17 -06:00
parent f154d7ea1b
commit 9bdc08e013
3 changed files with 18 additions and 6 deletions
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16
graphics/vnc/server/vnc_fbdev.c
View File

@ -159,9 +159,12 @@ static int up_getvideoinfo(FAR struct fb_vtable_s *vtable,
return -ENOTCONN;
}
/* Return the requested video info */
/* Return the requested video info. We are committed to using the
* configured color format in the framebuffer, but performing color
* conversions on the fly for the remote framebuffer as necessary.
*/
vinfo->fmt = session->colorfmt;
vinfo->fmt = RFB_COLORFMT;
vinfo->xres = session->screen.w;
vinfo->yres = session->screen.h;
vinfo->nplanes = 1;
@ -197,10 +200,15 @@ static int up_getplaneinfo(FAR struct fb_vtable_s *vtable, int planeno,
DEBUGASSERT(session->fb != NULL);
pinfo->fbmem = (FAR void *)&session->fb;
/* Return the requested plane info. We are committed to using the
* configured bits-per-pixels in the framebuffer, but performing color
* conversions on the fly for the remote framebuffer as necessary.
*/
pinfo->fbmem = (FAR void *)session->fb;
pinfo->fblen = (uint32_t)session->stride * CONFIG_VNCSERVER_SCREENWIDTH;
pinfo->stride = (fb_coord_t)session->stride;
pinfo->bpp = session->bpp;
pinfo->bpp = RFB_BITSPERPIXEL;
return OK;
}

6
graphics/vnc/server/vnc_negotiate.c
View File

@ -275,14 +275,16 @@ int vnc_negotiate(FAR struct vnc_session_s *session)
session->screen.w = CONFIG_VNCSERVER_SCREENWIDTH;
session->screen.h = CONFIG_VNCSERVER_SCREENHEIGHT;
/* Now allocate the framebuffer memory */
/* Now allocate the framebuffer memory. We rely on the fact that
* the KMM allocator will align memory to 32-bits or better.
*/
len = (session->bpp + 7) >> 3;
session->stride = len * CONFIG_VNCSERVER_SCREENWIDTH;
alloc = (size_t)session->stride * CONFIG_VNCSERVER_SCREENHEIGHT;
session->fb = (FAR uint8_t *)kmm_zalloc(alloc);
if (session->fb)
if (session->fb == NULL)
{
gdbg("ERROR: Failed to allocate framebuffer memory: %lu\n",
(unsigned long)alloc);

2
graphics/vnc/server/vnc_server.h
View File

@ -68,6 +68,7 @@
#endif
#if defined(CONFIG_VNCSERVER_COLORFMT_RGB16)
# define RFB_COLORFMT FB_FMT_RGB16_565
# define RFB_BITSPERPIXEL 16
# define RFB_PIXELDEPTH 16
# define RFB_TRUECOLOR 1
@ -78,6 +79,7 @@
# define RFB_GSHIFT 5
# define RFB_BSHIFT 0
#elif defined(CONFIG_VNCSERVER_COLORFMT_RGB32)
# define RFB_COLORFMT FB_FMT_RGB32
# define RFB_BITSPERPIXEL 32
# define RFB_PIXELDEPTH 24
# define RFB_TRUECOLOR 1