You can use the wss tool from Hans:
http://ivtvdriver.org/viewcvs/ivtv/trunk/test/
If you execute "wss 1" it will set the TV to a Zoom-mode (no anarmorph 16:9).
You will have to modify the code to get real 16:9
Look at the code:
wss = 8 + (atol(argv[1]) ? 3 : 0);
if (argc == 3)
This leads to wss value 8 (4:3) or 11 (PalPlus Zoom). You need value 7 for
anarmorph 16:9
I use the following code for the vdr pvr350-plugin:
void cPvr350Device::Set_wss_mode()
{
struct v4l2_format fmt;
struct v4l2_sliced_vbi_data data;
fmt.fmt.sliced.service_set = V4L2_SLICED_WSS_625;
fmt.type = V4L2_BUF_TYPE_SLICED_VBI_OUTPUT;
if (ioctl(fh, VIDIOC_S_FMT, &fmt) != 0) {
esyslog("pvr350: Set VBI mode failed\n");
}
if (ioctl(fh, VIDIOC_G_FMT, &fmt) != 0) {
esyslog("pvr350: VIDIOC_G_FMT failed\n");
}
data.id = V4L2_SLICED_WSS_625;
data.line = 23;
data.field = 0;
data.data[0] = wss_data;
data.data[1] = 0;
if (wss_data == 7) {
printf("pvr350: set wss mode 16:9 (anarmorph)\n");
}
if (wss_data == 8) {
printf("pvr350: set wss mode 4:3\n");
}
write(fh, &data, sizeof data);
}
You must open the device before you can use the code above:
fh = open("/dev/vbi16",O_WRONLY);
Your application must set wss==7 if it detects
Does it help you?
Greets,
Martin
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