genesi/linux-legacy
1
0
Fork 0
mirror of https://github.com/genesi/linux-legacy.git synced 2026-07-08 17:56:11 +00:00
Code Issues Packages Projects Releases Wiki Activity

ENGR00120805 v4l2 output: fill black color to disp fb before streamon

Browse Source 
There is a short show of previous played frame if not fill black color
to display fb.
Because fb device will unblank ahead of real data come.

Signed-off-by: Jason Chen <b02280@freescale.com>
This commit is contained in:
Jason Chen
2010-02-08 13:31:00 +08:00
committed by Matt Sealey
parent 5c503ff351
commit 4f8fb2ae79
1 changed files with 38 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
drivers/media/video/mxc/output/mxc_v4l2_output.c
View File

@@ -1365,13 +1365,47 @@ static int mxc_v4l2out_streamon(vout_data * vout)
vout->display_buf_size = vout->xres *
vout->yres * fbi->var.bits_per_pixel / 8;
/* fill black color for init fb, we assume fb has double buffer*/
if (format_is_yuv(vout->v2f.fmt.pix.pixelformat)) {
int i;
short * tmp = (short *) fbi->screen_base;
for (i = 0; i < (fbi->fix.line_length * fbi->var.yres_virtual)/2; i++, tmp++)
*tmp = 0x80;
if ((vout->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_UYVY) ||
(vout->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) ||
(!vout->ic_bypass)) {
short * tmp = (short *) fbi->screen_base;
short color;
if (vout->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV)
color = 0x8000;
else
color = 0x80;
for (i = 0; i < (fbi->fix.line_length * fbi->var.yres_virtual)/2;
i++, tmp++)
*tmp = color;
} else if ((vout->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_YUV420) ||
(vout->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_YVU420) ||
(vout->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_NV12)) {
char * base = (char *)fbi->screen_base;
int j, screen_size = fbi->var.xres * fbi->var.yres;
for (j = 0; j < 2; j++) {
memset(base, 0, screen_size);
base += screen_size;
for (i = 0; i < screen_size/2; i++, base++)
*base = 0x80;
}
} else if (vout->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_YUV422P) {
char * base = (char *)fbi->screen_base;
int j, screen_size = fbi->var.xres * fbi->var.yres;
for (j = 0; j < 2; j++) {
memset(base, 0, screen_size);
base += screen_size;
for (i = 0; i < screen_size; i++, base++)
*base = 0x80;
}
}
} else
memset(fbi->screen_base, 0x10,
memset(fbi->screen_base, 0x0,
fbi->fix.line_length * fbi->var.yres_virtual);
if (INTERLACED_CONTENT(vout))