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[media] s2255: Add ENUM_FRAMESIZES support

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Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2013-02-15 06:09:18 -03:00 committed by Mauro Carvalho Chehab
parent 3c728118e0
commit 05e5d44b07
1 changed files with 51 additions and 22 deletions
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73
drivers/media/usb/s2255/s2255drv.c
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@ -1545,36 +1545,64 @@ static int vidioc_s_parm(struct file *file, void *priv,
return 0;
}
#define NUM_SIZE_ENUMS 3
static const struct v4l2_frmsize_discrete ntsc_sizes[] = {
{ 640, 480 },
{ 640, 240 },
{ 320, 240 },
};
static const struct v4l2_frmsize_discrete pal_sizes[] = {
{ 704, 576 },
{ 704, 288 },
{ 352, 288 },
};
static int vidioc_enum_framesizes(struct file *file, void *priv,
struct v4l2_frmsizeenum *fe)
{
struct s2255_fh *fh = priv;
struct s2255_channel *channel = fh->channel;
int is_ntsc = channel->std & V4L2_STD_525_60;
const struct s2255_fmt *fmt;
if (fe->index >= NUM_SIZE_ENUMS)
return -EINVAL;
fmt = format_by_fourcc(fe->pixel_format);
if (fmt == NULL)
return -EINVAL;
fe->type = V4L2_FRMSIZE_TYPE_DISCRETE;
fe->discrete = is_ntsc ? ntsc_sizes[fe->index] : pal_sizes[fe->index];
return 0;
}
static int vidioc_enum_frameintervals(struct file *file, void *priv,
struct v4l2_frmivalenum *fe)
{
int is_ntsc = 0;
struct s2255_fh *fh = priv;
struct s2255_channel *channel = fh->channel;
const struct s2255_fmt *fmt;
const struct v4l2_frmsize_discrete *sizes;
int is_ntsc = channel->std & V4L2_STD_525_60;
#define NUM_FRAME_ENUMS 4
int frm_dec[NUM_FRAME_ENUMS] = {1, 2, 3, 5};
int i;
if (fe->index >= NUM_FRAME_ENUMS)
return -EINVAL;
switch (fe->width) {
case 640:
if (fe->height != 240 && fe->height != 480)
return -EINVAL;
is_ntsc = 1;
break;
case 320:
if (fe->height != 240)
return -EINVAL;
is_ntsc = 1;
break;
case 704:
if (fe->height != 288 && fe->height != 576)
return -EINVAL;
break;
case 352:
if (fe->height != 288)
return -EINVAL;
break;
default:
fmt = format_by_fourcc(fe->pixel_format);
if (fmt == NULL)
return -EINVAL;
}
sizes = is_ntsc ? ntsc_sizes : pal_sizes;
for (i = 0; i < NUM_SIZE_ENUMS; i++, sizes++)
if (fe->width == sizes->width &&
fe->height == sizes->height)
break;
if (i == NUM_SIZE_ENUMS)
return -EINVAL;
fe->type = V4L2_FRMIVAL_TYPE_DISCRETE;
fe->discrete.denominator = is_ntsc ? 30000 : 25000;
fe->discrete.numerator = (is_ntsc ? 1001 : 1000) * frm_dec[fe->index];
@ -1813,6 +1841,7 @@ static const struct v4l2_ioctl_ops s2255_ioctl_ops = {
.vidioc_g_jpegcomp = vidioc_g_jpegcomp,
.vidioc_s_parm = vidioc_s_parm,
.vidioc_g_parm = vidioc_g_parm,
.vidioc_enum_framesizes = vidioc_enum_framesizes,
.vidioc_enum_frameintervals = vidioc_enum_frameintervals,
.vidioc_log_status = v4l2_ctrl_log_status,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,