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camera: fix caculate vip buffer size for each resolution

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This commit is contained in:
ddl
2011-03-12 00:19:39 +08:00
parent 4b80589a9f
commit 4d4fd520bb
1 changed files with 40 additions and 6 deletions
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46
drivers/media/video/rk29_camera_oneframe.c
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@@ -263,8 +263,13 @@ static int rk29_videobuf_setup(struct videobuf_queue *vq, unsigned int *count,
dev_dbg(&icd->dev, "count=%d, size=%d\n", *count, *size);
/* planar capture requires Y, U and V buffers to be page aligned */
#if 0
*size = PAGE_ALIGN(icd->user_width* icd->user_height * bytes_per_pixel); /* Y pages UV pages, yuv422*/
pcdev->vipmem_bsize = PAGE_ALIGN(pcdev->host_width * pcdev->host_height * bytes_per_pixel);
#else
*size = PAGE_ALIGN((icd->user_width* icd->user_height * icd->current_fmt->depth + 7)>>3); /* Y pages UV pages, yuv422*/
pcdev->vipmem_bsize = PAGE_ALIGN((pcdev->host_width * pcdev->host_height * icd->current_fmt->depth + 7)>>3);
#endif
if ((pcdev->host_width != pcdev->icd->user_width) || (pcdev->host_height != pcdev->icd->user_height)) {
@@ -1133,7 +1138,26 @@ RK29_CAMERA_SET_FMT_END:
RK29CAMERA_TR("\n%s..%d.. ret = %d \n",__FUNCTION__,__LINE__, ret);
return ret;
}
static bool rk29_camera_fmt_capturechk(struct v4l2_format *f)
{
bool ret = false;
if ((f->fmt.pix.width == 1024) && (f->fmt.pix.height == 768)) {
ret = true;
} else if ((f->fmt.pix.width == 1280) && (f->fmt.pix.height == 1024)) {
ret = true;
} else if ((f->fmt.pix.width == 1600) && (f->fmt.pix.height == 1200)) {
ret = true;
} else if ((f->fmt.pix.width == 2048) && (f->fmt.pix.height == 1536)) {
ret = true;
} else if ((f->fmt.pix.width == 2592) && (f->fmt.pix.height == 1944)) {
ret = true;
}
if (ret == true)
RK29CAMERA_DG("%s %dx%d is capture format\n", __FUNCTION__, f->fmt.pix.width, f->fmt.pix.height);
return ret;
}
static int rk29_camera_try_fmt(struct soc_camera_device *icd,
struct v4l2_format *f)
{
@@ -1145,7 +1169,8 @@ static int rk29_camera_try_fmt(struct soc_camera_device *icd,
__u32 pixfmt = pix->pixelformat;
enum v4l2_field field;
int ret,usr_w,usr_h;
int bytes_per_pixel;
bool is_capture = rk29_camera_fmt_capturechk(f);
bool vipmem_is_overflow = false;
usr_w = pix->width;
usr_h = pix->height;
@@ -1171,10 +1196,14 @@ 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)) {
/* Assume preview buffer minimum is 4 */
if (PAGE_ALIGN(bytes_per_pixel*pix->width*pix->height)*4 <= pcdev->vipmem_size) {
if (is_capture) {
vipmem_is_overflow = (PAGE_ALIGN((pix->width*pix->height*icd->current_fmt->depth+7)>>3) > pcdev->vipmem_size);
} else {
/* Assume preview buffer minimum is 4 */
vipmem_is_overflow = (PAGE_ALIGN((pix->width*pix->height*icd->current_fmt->depth+7)>>3)*4 > pcdev->vipmem_size);
}
if (vipmem_is_overflow == false) {
pix->width = usr_w;
pix->height = usr_h;
} else {
@@ -1182,14 +1211,19 @@ static int rk29_camera_try_fmt(struct soc_camera_device *icd,
}
} 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) {
if (is_capture) {
vipmem_is_overflow = (PAGE_ALIGN((pix->width*pix->height*icd->current_fmt->depth+7)>>3) <= pcdev->vipmem_size);
} else {
vipmem_is_overflow = (PAGE_ALIGN((pix->width*pix->height*icd->current_fmt->depth+7)>>3)*4 <= pcdev->vipmem_size);
}
if (vipmem_is_overflow == false) {
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);
RK29CAMERA_TR("The aspect ratio(%dx%d/%dx%d) is bigger than 2 !\n",pix->width,pix->height,usr_w,usr_h);
}
}
#endif