05-26-2019
It's unlikely, in my view, that optimism and hope will overcome greed and selfishness to avert sustained damage to planet Earth.
Most of the world is still mired in corruption and poverty.
The majority of the people on the planet dislike or even hate others who do not agree with their world views.
Populism and nationalism and various forms of racism and extremism are predictably on the rise globally.
These are all symptoms of a world which is in social and economic decline (economic decline for the majority on the planet, not the few wealthy at the "top").
In a world which is in social and economic decline, the wealth is consolidated into the hands of fewer and fewer people, and the poor are exploited by the rich, and the rich are mostly interested in getting richer. The poor become poorer and the social-economic class struggles continue.
Under these realistic circumstances, it seems like a fantasy to me to believe that the terrible effects of pollution, and the rise of misinformation, populism, racism and nationalism are going to change humankind so they will "rise up and save the world" from the disastrous effects of climate change and the politics of racism, hatred and division.
I hope I am wrong; but if I had to bet large money on the outcome and could live long enough to see the results of the wager, the odds seems overwhelming in favor of a dystopian future for Planet Earth.
Honestly, this is "real life" and not a movie where at the end some hero or small group of superheroes are going to fly in and save the planet against all odds. This is not "Avengers End Game" or a Star Wars movie. This is real life with real pollution, industrial waste, greed, selfishness, corruption, materialism, consumerism, nationalism, racism, misinformation, disinformation and all the other things which are like a cancer eating away at our world.
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Xv(3X) Xv(3X)
Name
Xv - X Window System video extension
Description
The Xv extension provides support for video adaptors attached to an X display. It takes the approach that a display may have one or more
video adaptors, each of which has one or more ports through which independent video streams pass.
An adaptor may be able to display video in a drawable, capture video from a drawable, or both. It translates between video encoding (NTSC,
PAL, SECAM, etc...) and drawable format (depth and visual-id pair). An adaptor may support multiple video encodings and/or multiple draw-
able formats.
Clients use Xv(3X) to gain access and manage sharing of a display's video resources. Typically, a client will use XvQueryExtension(3X) to
determine the status of the extension, XvQueryAdaptors(3X) to get a description of what video adaptors exist, and XvQueryEncodings(3X) to
get a description of what video encodings an adaptor supports.
Once a client has determined what video resources are available, it is free to put video into a drawable or get video from a drawable,
according the capabilities supported. Clients can select to receive events when video activity changes in a drawable and when port
attributes have changed.
Summary of Library Functions
The following is a summary of Xv library functions:
XvGetPortAttribute(3X) - return current port attribute value
XvGetStill(3X) - capture a single frame of video from a drawable
XvGetVideo(3X) - capture video from a drawable
XvGrabPort(3X) - lock port for exclusive use by client
XvPortNotify(3X) - event generated when port attributes change
XvPutStill(3X) - write a single frame of video to a drawable
XvPutVideo(3X) - write video into a drawable
XvQueryAdaptors(3X) - return adaptor information for a screen
XvQueryBestSize(3X) - determine the optimum drawable region size
XvQueryEncodings(3X) - return list of encodings for an adaptor
XvQueryExtension(3X) - return version and revision of extension
XvSelectPortNotify(3X) - enable or disable XvPortNotify events
XvSelectVideoNotify(3X) - enable or disable XvVideoNotify events
XvSetPortAttribute(3X) - set an attribute for a port
XvStopVideo(3X) - stop active video
XvUngrabPort(3X) - release a grabbed port
XvVideoNotify(3X) - event generated for video processing
Each of these functions is described in its own Xv man page.
XFree86 Version Version 4.3.0 Xv(3X)