[MPlayer-dev-eng] [PATCH] Decode economy - 2

[Sergey Khlutchin]

Hi!

This is a second version of the patch.
I divided it on two parts and have tested the patched libavcodec for backward compatibility.
New parameters for libavcodec was moved to AVCodecContext structure and mjpeg decoder was optimized.

>When the size of video is more than the size of its visible part,
>it is possible to accelerate decoding not making transformations of invisible blocks of the picture.
>The attached patch counts the picture visible part in view of used filters and location of the MPlayer's window inside of parents.
>It was necessary to do changes in different parts, probably some places are insufficiently elegant,
>and I would like to discuss it.
>This code works for -vo x11 and MJPEG generated by Elphel camera.

Sergey Khlutchin
Elphel, Inc

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