[Ffmpeg-devel] img_convert() ???

[Luca Abeni]

Hi all,

I am feeling very stupid, but...
When trying to modify ffmpeg.c to directly use swscaler interface, I
found something that looks strange around line 629 of ffmpeg.c:

      if (do_deinterlace){
            if(avpicture_deinterlace(picture2, picture,
                                     dec->pix_fmt, dec->width, dec->height) < 0) {
                /* if error, do not deinterlace */
                av_free(buf);
                buf = NULL;
                picture2 = picture; 
            }
        } else {
            if (img_convert(picture2, dec->pix_fmt, picture,
                            dec->pix_fmt, dec->width, dec->height) < 0) {
                /* if error, do not copy */
                av_free(buf);
                buf = NULL;
                picture2 = picture;
            }
        }

Now, what's the purpose of this img_convert? It seems that it's just
copying picture in picture2, No? So, why not using img_copy? Also, why
is a copy needed at all? I think I am really missing something here...

			Thanks,
				Luca
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