337 lines
11 KiB
C++
337 lines
11 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "hwc-drm-plane"
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#include "DrmPlane.h"
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#include <algorithm>
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#include <cerrno>
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#include <cinttypes>
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#include <cstdint>
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#include "DrmDevice.h"
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#include "bufferinfo/BufferInfoGetter.h"
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#include "utils/log.h"
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namespace android {
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auto DrmPlane::CreateInstance(DrmDevice &dev, uint32_t plane_id)
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-> std::unique_ptr<DrmPlane> {
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auto p = MakeDrmModePlaneUnique(dev.GetFd(), plane_id);
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if (!p) {
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ALOGE("Failed to get plane %d", plane_id);
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return {};
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}
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auto plane = std::unique_ptr<DrmPlane>(new DrmPlane(dev, std::move(p)));
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if (plane->Init() != 0) {
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ALOGE("Failed to init plane %d", plane_id);
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return {};
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}
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return plane;
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}
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int DrmPlane::Init() {
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// NOLINTNEXTLINE(cppcoreguidelines-pro-bounds-pointer-arithmetic)
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formats_ = {plane_->formats, plane_->formats + plane_->count_formats};
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DrmProperty p;
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if (!GetPlaneProperty("type", p)) {
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return -ENOTSUP;
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}
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int ret = 0;
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uint64_t type = 0;
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std::tie(ret, type) = p.value();
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if (ret != 0) {
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ALOGE("Failed to get plane type property value");
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return ret;
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}
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switch (type) {
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case DRM_PLANE_TYPE_OVERLAY:
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case DRM_PLANE_TYPE_PRIMARY:
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case DRM_PLANE_TYPE_CURSOR:
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type_ = (uint32_t)type;
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break;
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default:
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ALOGE("Invalid plane type %" PRIu64, type);
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return -EINVAL;
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}
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if (!GetPlaneProperty("CRTC_ID", crtc_property_) ||
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!GetPlaneProperty("FB_ID", fb_property_) ||
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!GetPlaneProperty("CRTC_X", crtc_x_property_) ||
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!GetPlaneProperty("CRTC_Y", crtc_y_property_) ||
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!GetPlaneProperty("CRTC_W", crtc_w_property_) ||
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!GetPlaneProperty("CRTC_H", crtc_h_property_) ||
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!GetPlaneProperty("SRC_X", src_x_property_) ||
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!GetPlaneProperty("SRC_Y", src_y_property_) ||
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!GetPlaneProperty("SRC_W", src_w_property_) ||
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!GetPlaneProperty("SRC_H", src_h_property_)) {
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return -ENOTSUP;
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}
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GetPlaneProperty("zpos", zpos_property_, Presence::kOptional);
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if (GetPlaneProperty("rotation", rotation_property_, Presence::kOptional)) {
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rotation_property_.AddEnumToMap("rotate-0", LayerTransform::kIdentity,
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transform_enum_map_);
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rotation_property_.AddEnumToMap("rotate-90", LayerTransform::kRotate90,
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transform_enum_map_);
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rotation_property_.AddEnumToMap("rotate-180", LayerTransform::kRotate180,
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transform_enum_map_);
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rotation_property_.AddEnumToMap("rotate-270", LayerTransform::kRotate270,
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transform_enum_map_);
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rotation_property_.AddEnumToMap("reflect-x", LayerTransform::kFlipH,
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transform_enum_map_);
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rotation_property_.AddEnumToMap("reflect-y", LayerTransform::kFlipV,
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transform_enum_map_);
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}
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GetPlaneProperty("alpha", alpha_property_, Presence::kOptional);
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if (GetPlaneProperty("pixel blend mode", blend_property_,
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Presence::kOptional)) {
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blend_property_.AddEnumToMap("Pre-multiplied", BufferBlendMode::kPreMult,
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blending_enum_map_);
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blend_property_.AddEnumToMap("Coverage", BufferBlendMode::kCoverage,
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blending_enum_map_);
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blend_property_.AddEnumToMap("None", BufferBlendMode::kNone,
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blending_enum_map_);
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}
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GetPlaneProperty("IN_FENCE_FD", in_fence_fd_property_, Presence::kOptional);
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if (HasNonRgbFormat()) {
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if (GetPlaneProperty("COLOR_ENCODING", color_encoding_propery_,
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Presence::kOptional)) {
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color_encoding_propery_.AddEnumToMap("ITU-R BT.709 YCbCr",
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BufferColorSpace::kItuRec709,
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color_encoding_enum_map_);
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color_encoding_propery_.AddEnumToMap("ITU-R BT.601 YCbCr",
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BufferColorSpace::kItuRec601,
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color_encoding_enum_map_);
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color_encoding_propery_.AddEnumToMap("ITU-R BT.2020 YCbCr",
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BufferColorSpace::kItuRec2020,
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color_encoding_enum_map_);
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}
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if (GetPlaneProperty("COLOR_RANGE", color_range_property_,
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Presence::kOptional)) {
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color_range_property_.AddEnumToMap("YCbCr full range",
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BufferSampleRange::kFullRange,
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color_range_enum_map_);
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color_range_property_.AddEnumToMap("YCbCr limited range",
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BufferSampleRange::kLimitedRange,
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color_range_enum_map_);
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}
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}
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return 0;
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}
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bool DrmPlane::IsCrtcSupported(const DrmCrtc &crtc) const {
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unsigned int crtc_property_value = 0;
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std::tie(std::ignore, crtc_property_value) = crtc_property_.value();
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if (crtc_property_value != 0 && crtc_property_value != crtc.GetId() &&
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GetType() == DRM_PLANE_TYPE_PRIMARY) {
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// Some DRM driver such as omap_drm allows sharing primary plane between
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// CRTCs, but the primay plane could not be shared if it has been used by
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// any CRTC already, which is protected by the plane_switching_crtc function
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// in the kernel drivers/gpu/drm/drm_atomic.c file.
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// The current drm_hwc design is not ready to support such scenario yet,
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// so adding the CRTC status check here to workaorund for now.
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ALOGW(
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"%s: This Plane(id=%d) is activated for Crtc(id=%d), could not be used "
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"for Crtc (id=%d)",
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__FUNCTION__, GetId(), crtc_property_value, crtc.GetId());
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return false;
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}
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return ((1 << crtc.GetIndexInResArray()) & plane_->possible_crtcs) != 0;
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}
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bool DrmPlane::IsValidForLayer(LayerData *layer) {
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if (!rotation_property_) {
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if (layer->pi.transform != LayerTransform::kIdentity) {
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ALOGV("No rotation property on plane %d", GetId());
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return false;
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}
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} else {
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if (transform_enum_map_.count(layer->pi.transform) == 0) {
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ALOGV("Transform is not supported on plane %d", GetId());
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return false;
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}
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}
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if (alpha_property_.id() == 0 && layer->pi.alpha != UINT16_MAX) {
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ALOGV("Alpha is not supported on plane %d", GetId());
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return false;
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}
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if (blending_enum_map_.count(layer->bi->blend_mode) == 0 &&
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layer->bi->blend_mode != BufferBlendMode::kNone &&
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layer->bi->blend_mode != BufferBlendMode::kPreMult) {
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ALOGV("Blending is not supported on plane %d", GetId());
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return false;
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}
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uint32_t format = layer->bi->format;
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if (!IsFormatSupported(format)) {
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ALOGV("Plane %d does not supports %c%c%c%c format", GetId(), format,
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format >> 8, format >> 16, format >> 24);
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return false;
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}
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return true;
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}
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bool DrmPlane::IsFormatSupported(uint32_t format) const {
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return std::find(std::begin(formats_), std::end(formats_), format) !=
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std::end(formats_);
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}
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bool DrmPlane::HasNonRgbFormat() const {
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return std::find_if_not(std::begin(formats_), std::end(formats_),
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[](uint32_t format) {
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return BufferInfoGetter::IsDrmFormatRgb(format);
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}) != std::end(formats_);
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}
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static uint64_t ToDrmRotation(LayerTransform transform) {
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uint64_t rotation = 0;
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if ((transform & LayerTransform::kFlipH) != 0)
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rotation |= DRM_MODE_REFLECT_X;
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if ((transform & LayerTransform::kFlipV) != 0)
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rotation |= DRM_MODE_REFLECT_Y;
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if ((transform & LayerTransform::kRotate90) != 0)
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rotation |= DRM_MODE_ROTATE_90;
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else if ((transform & LayerTransform::kRotate180) != 0)
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rotation |= DRM_MODE_ROTATE_180;
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else if ((transform & LayerTransform::kRotate270) != 0)
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rotation |= DRM_MODE_ROTATE_270;
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else
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rotation |= DRM_MODE_ROTATE_0;
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return rotation;
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}
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/* Convert float to 16.16 fixed point */
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static int To1616FixPt(float in) {
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constexpr int kBitShift = 16;
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return int(in * (1 << kBitShift));
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}
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auto DrmPlane::AtomicSetState(drmModeAtomicReq &pset, LayerData &layer,
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uint32_t zpos, uint32_t crtc_id) -> int {
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if (!layer.fb) {
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ALOGE("Expected a valid framebuffer for pset");
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return -EINVAL;
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}
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if (zpos_property_ && !zpos_property_.is_immutable()) {
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uint64_t min_zpos = 0;
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// Ignore ret and use min_zpos as 0 by default
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std::tie(std::ignore, min_zpos) = zpos_property_.range_min();
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if (!zpos_property_.AtomicSet(pset, zpos + min_zpos)) {
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return -EINVAL;
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}
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}
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if (layer.acquire_fence &&
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!in_fence_fd_property_.AtomicSet(pset, layer.acquire_fence.Get())) {
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return -EINVAL;
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}
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auto &disp = layer.pi.display_frame;
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auto &src = layer.pi.source_crop;
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if (!crtc_property_.AtomicSet(pset, crtc_id) ||
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!fb_property_.AtomicSet(pset, layer.fb->GetFbId()) ||
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!crtc_x_property_.AtomicSet(pset, disp.left) ||
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!crtc_y_property_.AtomicSet(pset, disp.top) ||
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!crtc_w_property_.AtomicSet(pset, disp.right - disp.left) ||
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!crtc_h_property_.AtomicSet(pset, disp.bottom - disp.top) ||
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!src_x_property_.AtomicSet(pset, To1616FixPt(src.left)) ||
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!src_y_property_.AtomicSet(pset, To1616FixPt(src.top)) ||
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!src_w_property_.AtomicSet(pset, To1616FixPt(src.right - src.left)) ||
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!src_h_property_.AtomicSet(pset, To1616FixPt(src.bottom - src.top))) {
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return -EINVAL;
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}
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if (rotation_property_ &&
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!rotation_property_.AtomicSet(pset, ToDrmRotation(layer.pi.transform))) {
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return -EINVAL;
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}
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if (alpha_property_ && !alpha_property_.AtomicSet(pset, layer.pi.alpha)) {
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return -EINVAL;
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}
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if (blending_enum_map_.count(layer.bi->blend_mode) != 0 &&
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!blend_property_.AtomicSet(pset,
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blending_enum_map_[layer.bi->blend_mode])) {
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return -EINVAL;
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}
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if (color_encoding_enum_map_.count(layer.bi->color_space) != 0 &&
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!color_encoding_propery_
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.AtomicSet(pset, color_encoding_enum_map_[layer.bi->color_space])) {
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return -EINVAL;
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}
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if (color_range_enum_map_.count(layer.bi->sample_range) != 0 &&
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!color_range_property_
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.AtomicSet(pset, color_range_enum_map_[layer.bi->sample_range])) {
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return -EINVAL;
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}
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return 0;
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}
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auto DrmPlane::AtomicDisablePlane(drmModeAtomicReq &pset) -> int {
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if (!crtc_property_.AtomicSet(pset, 0) || !fb_property_.AtomicSet(pset, 0)) {
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return -EINVAL;
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}
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return 0;
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}
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auto DrmPlane::GetPlaneProperty(const char *prop_name, DrmProperty &property,
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Presence presence) -> bool {
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int err = drm_->GetProperty(GetId(), DRM_MODE_OBJECT_PLANE, prop_name,
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&property);
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if (err != 0) {
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if (presence == Presence::kMandatory) {
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ALOGE("Could not get mandatory property \"%s\" from plane %d", prop_name,
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GetId());
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} else {
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ALOGV("Could not get optional property \"%s\" from plane %d", prop_name,
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GetId());
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}
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return false;
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}
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return true;
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}
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} // namespace android
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