[MPlayer-dev-eng] [PATCH] Fix capture width/height selection in tvi_dshow

[Vladimir Voroshilov]

Hi, All

Attached patch fixes capture resolution selection in tvi_dshow by
specifying width/height via -tv argument in command line.

Problem was fixed by implementing TVI_CONTROL_VID_SET_WIDTH_HEIGHT ioctl.

Existing code is not able  to change resolution if driver presents
supported modes (format+resolution) as separate format structures with
fixed width/height each. It tries to change width or height in bounds
of provided min/max values within the same format.

New ioctl searches is all detected formats for one with the same
FourCC (as was set previously by TVI_SET_FORMAT ioctl) and
appropriate width/height bounds (according to requested width/height).
If no such format found it leaves selected format untouched.

Patch was tested under Windows 7 with noname Video Webcam (vid 0x04F2 
pid 0xB044) and
Philips SPC 1030NC Webcam.

I'm not sure about formatting/spaces in the patch since wrote it under 
windows box.
Please review

-- 
Vladimir Voroshilovmailto:voroshil at gmail.com
Jabber:voroshil at gmail.com
ICQ: 95587719
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