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-rw-r--r--drivers/media/video/em28xx/em28xx-core.c4
-rw-r--r--drivers/media/video/em28xx/em28xx-video.c43
-rw-r--r--drivers/media/video/em28xx/em28xx.h7
3 files changed, 13 insertions, 41 deletions
diff --git a/drivers/media/video/em28xx/em28xx-core.c b/drivers/media/video/em28xx/em28xx-core.c
index 95bc18d0e780..97635abb916e 100644
--- a/drivers/media/video/em28xx/em28xx-core.c
+++ b/drivers/media/video/em28xx/em28xx-core.c
@@ -396,13 +396,13 @@ int em28xx_set_alternate(struct em28xx *dev)
{
int errCode, prev_alt = dev->alt;
int i;
- unsigned int min_pkt_size = dev->bytesperline + 4;
+ unsigned int min_pkt_size = dev->width * 2 + 4;
/* When image size is bigger than a certain value,
the frame size should be increased, otherwise, only
green screen will be received.
*/
- if (dev->frame_size > 720*240*2)
+ if (dev->width * 2 * dev->height > 720 * 240 * 2)
min_pkt_size *= 2;
for (i = 0; i < dev->num_alt; i++) {
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index f8bbf397d3a7..6084f8452b2b 100644
--- a/drivers/media/video/em28xx/em28xx-video.c
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -154,12 +154,7 @@ static void em28xx_copy_video(struct em28xx *dev,
{
void *fieldstart, *startwrite, *startread;
int linesdone, currlinedone, offset, lencopy, remain;
-
- if (dev->frame_size != buf->vb.size) {
- em28xx_errdev("size %i and buf.length %lu are different!\n",
- dev->frame_size, buf->vb.size);
- return;
- }
+ int bytesperline = dev->width << 1;
if (dma_q->pos + len > buf->vb.size)
len = buf->vb.size - dma_q->pos;
@@ -177,13 +172,13 @@ static void em28xx_copy_video(struct em28xx *dev,
if (buf->top_field)
fieldstart = outp;
else
- fieldstart = outp + dev->bytesperline;
+ fieldstart = outp + bytesperline;
- linesdone = dma_q->pos / dev->bytesperline;
- currlinedone = dma_q->pos % dev->bytesperline;
- offset = linesdone * dev->bytesperline * 2 + currlinedone;
+ linesdone = dma_q->pos / bytesperline;
+ currlinedone = dma_q->pos % bytesperline;
+ offset = linesdone * bytesperline * 2 + currlinedone;
startwrite = fieldstart + offset;
- lencopy = dev->bytesperline - currlinedone;
+ lencopy = bytesperline - currlinedone;
lencopy = lencopy > remain ? remain : lencopy;
if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
@@ -199,12 +194,12 @@ static void em28xx_copy_video(struct em28xx *dev,
remain -= lencopy;
while (remain > 0) {
- startwrite += lencopy + dev->bytesperline;
+ startwrite += lencopy + bytesperline;
startread += lencopy;
- if (dev->bytesperline > remain)
+ if (bytesperline > remain)
lencopy = remain;
else
- lencopy = dev->bytesperline;
+ lencopy = bytesperline;
if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
em28xx_isocdbg("Overflow of %zi bytes past buffer end (2)\n",
@@ -617,8 +612,6 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
struct em28xx_dmaqueue *vidq = &dev->vidq;
int rc = 0, urb_init = 0;
- /* BUG_ON(NULL == fh->fmt); */
-
/* FIXME: It assumes depth = 16 */
/* The only currently supported format is 16 bits/pixel */
buf->vb.size = 16 * dev->width * dev->height >> 3;
@@ -626,7 +619,6 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
return -EINVAL;
- buf->fmt = fh->fmt;
buf->vb.width = dev->width;
buf->vb.height = dev->height;
buf->vb.field = field;
@@ -877,8 +869,8 @@ static int vidioc_g_fmt_cap(struct file *file, void *priv,
f->fmt.pix.width = dev->width;
f->fmt.pix.height = dev->height;
f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
- f->fmt.pix.bytesperline = dev->bytesperline;
- f->fmt.pix.sizeimage = dev->frame_size;
+ f->fmt.pix.bytesperline = dev->width * 2;
+ f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
/* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
@@ -979,9 +971,6 @@ static int vidioc_s_fmt_cap(struct file *file, void *priv,
/* set new image size */
dev->width = f->fmt.pix.width;
dev->height = f->fmt.pix.height;
- dev->frame_size = dev->width * dev->height * 2;
- dev->field_size = dev->frame_size >> 1;
- dev->bytesperline = dev->width * 2;
get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
em28xx_set_alternate(dev);
@@ -1019,9 +1008,6 @@ static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
/* set new image size */
dev->width = f.fmt.pix.width;
dev->height = f.fmt.pix.height;
- dev->frame_size = dev->width * dev->height * 2;
- dev->field_size = dev->frame_size >> 1;
- dev->bytesperline = dev->width * 2;
get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
em28xx_resolution_set(dev);
@@ -1736,9 +1722,6 @@ static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
dev->width = norm_maxw(dev);
dev->height = norm_maxh(dev);
- dev->frame_size = dev->width * dev->height * 2;
- dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
- dev->bytesperline = dev->width * 2;
dev->hscale = 0;
dev->vscale = 0;
@@ -2152,10 +2135,6 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
dev->width = maxw;
dev->height = maxh;
dev->interlaced = EM28XX_INTERLACED_DEFAULT;
- dev->field_size = dev->width * dev->height;
- dev->frame_size =
- dev->interlaced ? dev->field_size << 1 : dev->field_size;
- dev->bytesperline = dev->width * 2;
dev->hscale = 0;
dev->vscale = 0;
dev->ctl_input = 2;
diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h
index 6d62357a038f..0080a09860d9 100644
--- a/drivers/media/video/em28xx/em28xx.h
+++ b/drivers/media/video/em28xx/em28xx.h
@@ -128,8 +128,6 @@ struct em28xx_buffer {
/* common v4l buffer stuff -- must be first */
struct videobuf_buffer vb;
- struct em28xx_fmt *fmt;
-
struct list_head frame;
int top_field;
int receiving;
@@ -294,9 +292,6 @@ struct em28xx {
/* frame properties */
int width; /* current frame width */
int height; /* current frame height */
- int frame_size; /* current frame size */
- int field_size; /* current field size */
- int bytesperline;
int hscale; /* horizontal scale factor (see datasheet) */
int vscale; /* vertical scale factor (see datasheet) */
int interlaced; /* 1=interlace fileds, 0=just top fileds */
@@ -352,9 +347,7 @@ struct em28xx_fh {
unsigned int stream_on:1; /* Locks streams */
int radio;
- unsigned int width, height;
struct videobuf_queue vb_vidq;
- struct em28xx_fmt *fmt;
enum v4l2_buf_type type;
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-14 09:32:20 +0000