As some devices not present in ExoPlayer's list may not implement
MediaCodec.setOutputSurface(Surface) properly, this workaround could be useful
on these devices.
It forces ExoPlayer to fall back on releasing and re-instantiating video codec
instances, which is always used on Android 5 and lower due to addition of this
method in Android 6.
To do so, a CustomMediaCodecVideoRenderer, based on ExoPlayer's
MediaVideoCodecRenderer which always return true for the
codecNeedsSetOutputSurfaceWorkaround method has been added, which is used in
CustomRenderersFactory, a class based on DefaultRenderersFactory which always
returns our CustomMediaCodecVideoRenderer as the video renderers.
CustomRenderersFactory replaces DefaultRenderersFactory in the player, in the
case this setting is enabled.
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