[Bug 5876] big xvideo issues with ATI Radeon RV100 family (Mobility M6 LY, ...)

bugzilla-daemon at annarchy.freedesktop.org bugzilla-daemon at annarchy.freedesktop.org
Mon Dec 4 22:24:21 PST 2006

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------- Additional Comments From drzeus-bugzilla at drzeus.cx  2006-12-04 22:24 -------
So mplayer assumes that by the time it wants to fill that buffer again, X has
finished copying it. That sounds very broken, and not really consistent with
observed behaviour.

If mplayer didn't pay attention to what X is doing with the buffer, then it
wouldn't be able to detect and whine about "your machine is too slow to play this".

Right, in libvo/vo_xv.c we can find this:

static void flip_page(void)
    put_xvimage( xvimage[current_buf] );

    /* remember the currently visible buffer */
    visible_buf = current_buf;

    if (num_buffers > 1)
        current_buf =
            vo_directrendering ? 0 : ((current_buf + 1) % num_buffers);
    } else
        XSync(mDisplay, False);
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