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camera:camera driver must check vip memory is enough or not for scale process by IPP

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This commit is contained in:
ddl
2011-03-07 17:47:18 +08:00
parent a07ababd55
commit 76419122be
1 changed files with 18 additions and 4 deletions
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22
drivers/media/video/rk29_camera_oneframe.c
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@@ -1138,12 +1138,14 @@ static int rk29_camera_try_fmt(struct soc_camera_device *icd,
struct v4l2_format *f)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
struct rk29_camera_dev *pcdev = ici->priv;
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
const struct soc_camera_format_xlate *xlate;
struct v4l2_pix_format *pix = &f->fmt.pix;
__u32 pixfmt = pix->pixelformat;
enum v4l2_field field;
int ret,usr_w,usr_h;
int bytes_per_pixel;
usr_w = pix->width;
usr_h = pix->height;
@@ -1169,13 +1171,25 @@ static int rk29_camera_try_fmt(struct soc_camera_device *icd,
ret = v4l2_subdev_call(sd, video, try_fmt, f);
pix->pixelformat = pixfmt;
#ifdef CONFIG_VIDEO_RK29_WORK_IPP
bytes_per_pixel = (xlate->cam_fmt->depth + 7) >> 3;
if ((pix->width > usr_w) && (pix->height > usr_h)) {
pix->width = usr_w;
pix->height = usr_h;
} else if ((pix->width < usr_w) && (pix->height < usr_h)) {
if (((usr_w>>1) < pix->width) && ((usr_h>>1) < pix->height)) {
/* Assume preview buffer minimum is 4 */
if (PAGE_ALIGN(bytes_per_pixel*pix->width*pix->height)*4 <= pcdev->vipmem_size) {
pix->width = usr_w;
pix->height = usr_h;
} else {
RK29CAMERA_TR("vipmem for IPP is overflow, This resolution(%dx%d -> %dx%d) is invalidate!\n",pix->width,pix->height,usr_w,usr_h);
}
} else if ((pix->width < usr_w) && (pix->height < usr_h)) {
if (((usr_w>>1) < pix->width) && ((usr_h>>1) < pix->height)) {
if (PAGE_ALIGN(bytes_per_pixel*pix->width*pix->height)*4 <= pcdev->vipmem_size) {
pix->width = usr_w;
pix->height = usr_h;
} else {
RK29CAMERA_TR("vipmem for IPP is overflow, This resolution(%dx%d -> %dx%d) is invalidate!\n",pix->width,pix->height,usr_w,usr_h);
}
} else {
RK29CAMERA_TR("The aspect ratio(%dx%d//%dx%d) is bigger than 2 !\n",pix->width,pix->height,usr_w,usr_h);
}
}
#endif