mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-16 01:04:08 +08:00
V4L/DVB (12134): vivi: bug: don't assume that S_STD will be called before streaming
precalculate_bars() improved vivi performance. However, it assumed that always before streaming, the driver would call VIDIOC_S_STD. This is not an API requirement, and the testing apps don't do that. Due to that, a regression were caused by the patch that added it. This patch moves the precalculate_bars to the proper place of the code, calling it at buffer_prepare() callback. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
parent
8e4a718ff3
commit
c285addb39
@ -343,6 +343,53 @@ static struct bar_std bars[] = {
|
||||
#define TO_U(r, g, b) \
|
||||
(((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128)
|
||||
|
||||
/* precalculate color bar values to speed up rendering */
|
||||
static void precalculate_bars(struct vivi_fh *fh)
|
||||
{
|
||||
struct vivi_dev *dev = fh->dev;
|
||||
unsigned char r, g, b;
|
||||
int k, is_yuv;
|
||||
|
||||
fh->input = dev->input;
|
||||
|
||||
for (k = 0; k < 8; k++) {
|
||||
r = bars[fh->input].bar[k][0];
|
||||
g = bars[fh->input].bar[k][1];
|
||||
b = bars[fh->input].bar[k][2];
|
||||
is_yuv = 0;
|
||||
|
||||
switch (fh->fmt->fourcc) {
|
||||
case V4L2_PIX_FMT_YUYV:
|
||||
case V4L2_PIX_FMT_UYVY:
|
||||
is_yuv = 1;
|
||||
break;
|
||||
case V4L2_PIX_FMT_RGB565:
|
||||
case V4L2_PIX_FMT_RGB565X:
|
||||
r >>= 3;
|
||||
g >>= 2;
|
||||
b >>= 3;
|
||||
break;
|
||||
case V4L2_PIX_FMT_RGB555:
|
||||
case V4L2_PIX_FMT_RGB555X:
|
||||
r >>= 3;
|
||||
g >>= 3;
|
||||
b >>= 3;
|
||||
break;
|
||||
}
|
||||
|
||||
if (is_yuv) {
|
||||
fh->bars[k][0] = TO_Y(r, g, b); /* Luma */
|
||||
fh->bars[k][1] = TO_U(r, g, b); /* Cb */
|
||||
fh->bars[k][2] = TO_V(r, g, b); /* Cr */
|
||||
} else {
|
||||
fh->bars[k][0] = r;
|
||||
fh->bars[k][1] = g;
|
||||
fh->bars[k][2] = b;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
#define TSTAMP_MIN_Y 24
|
||||
#define TSTAMP_MAX_Y (TSTAMP_MIN_Y + 15)
|
||||
#define TSTAMP_INPUT_X 10
|
||||
@ -755,6 +802,8 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
|
||||
buf->vb.height = fh->height;
|
||||
buf->vb.field = field;
|
||||
|
||||
precalculate_bars(fh);
|
||||
|
||||
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
|
||||
rc = videobuf_iolock(vq, &buf->vb, NULL);
|
||||
if (rc < 0)
|
||||
@ -893,53 +942,6 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* precalculate color bar values to speed up rendering */
|
||||
static void precalculate_bars(struct vivi_fh *fh)
|
||||
{
|
||||
struct vivi_dev *dev = fh->dev;
|
||||
unsigned char r, g, b;
|
||||
int k, is_yuv;
|
||||
|
||||
fh->input = dev->input;
|
||||
|
||||
for (k = 0; k < 8; k++) {
|
||||
r = bars[fh->input].bar[k][0];
|
||||
g = bars[fh->input].bar[k][1];
|
||||
b = bars[fh->input].bar[k][2];
|
||||
is_yuv = 0;
|
||||
|
||||
switch (fh->fmt->fourcc) {
|
||||
case V4L2_PIX_FMT_YUYV:
|
||||
case V4L2_PIX_FMT_UYVY:
|
||||
is_yuv = 1;
|
||||
break;
|
||||
case V4L2_PIX_FMT_RGB565:
|
||||
case V4L2_PIX_FMT_RGB565X:
|
||||
r >>= 3;
|
||||
g >>= 2;
|
||||
b >>= 3;
|
||||
break;
|
||||
case V4L2_PIX_FMT_RGB555:
|
||||
case V4L2_PIX_FMT_RGB555X:
|
||||
r >>= 3;
|
||||
g >>= 3;
|
||||
b >>= 3;
|
||||
break;
|
||||
}
|
||||
|
||||
if (is_yuv) {
|
||||
fh->bars[k][0] = TO_Y(r, g, b); /* Luma */
|
||||
fh->bars[k][1] = TO_U(r, g, b); /* Cb */
|
||||
fh->bars[k][2] = TO_V(r, g, b); /* Cr */
|
||||
} else {
|
||||
fh->bars[k][0] = r;
|
||||
fh->bars[k][1] = g;
|
||||
fh->bars[k][2] = b;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/*FIXME: This seems to be generic enough to be at videodev2 */
|
||||
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
|
||||
struct v4l2_format *f)
|
||||
@ -965,8 +967,6 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
|
||||
fh->vb_vidq.field = f->fmt.pix.field;
|
||||
fh->type = f->type;
|
||||
|
||||
precalculate_bars(fh);
|
||||
|
||||
ret = 0;
|
||||
out:
|
||||
mutex_unlock(&q->vb_lock);
|
||||
@ -1357,6 +1357,7 @@ static int __init vivi_create_instance(int inst)
|
||||
goto unreg_dev;
|
||||
|
||||
*vfd = vivi_template;
|
||||
vfd->debug = debug;
|
||||
|
||||
ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr);
|
||||
if (ret < 0)
|
||||
|
Loading…
Reference in New Issue
Block a user