forked from Minki/linux
f9a2348196
The Amlogic Meson GX SoCs support an Overlay plane behind the primary plane for video rendering. This Overlay plane support various YUV layouts : - YUYV - NV12 / NV21 - YUV444 / 422 / 420 / 411 / 410 The scaler supports a wide range of scaling ratios, but for simplicity, plane atomic check limits the scaling from x5 to /5 in vertical and horizontal scaling. The z-order is fixed and always behind the primary plane and cannot be changed. The scaling parameter algorithm was taken from the Amlogic vendor kernel code and rewritten to match the atomic universal plane requirements. The video rendering using this overlay plane support has been tested using the new Kodi DRM-KMS Prime rendering path along the in-review V4L2 Mem2Mem Hardware Video Decoder up to 3840x2160 NV12 frames on various display modes. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Tested-by: Maxime Jourdan <mjourdan@baylibre.com> Link: https://patchwork.freedesktop.org/patch/msgid/1541497202-20570-2-git-send-email-narmstrong@baylibre.com
15 lines
295 B
C
15 lines
295 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2018 BayLibre, SAS
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* Author: Neil Armstrong <narmstrong@baylibre.com>
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*/
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#ifndef __MESON_OVERLAY_H
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#define __MESON_OVERLAY_H
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#include "meson_drv.h"
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int meson_overlay_create(struct meson_drm *priv);
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#endif /* __MESON_OVERLAY_H */
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