| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "drmhwc" |
| |
| #include "DrmPlane.h" |
| |
| #include <algorithm> |
| #include <cerrno> |
| #include <cinttypes> |
| #include <cstdint> |
| |
| #include "DrmDevice.h" |
| #include "bufferinfo/BufferInfoGetter.h" |
| #include "compositor/LayerData.h" |
| #include "utils/log.h" |
| |
| namespace android { |
| |
| auto DrmPlane::CreateInstance(DrmDevice &dev, uint32_t plane_id) |
| -> std::unique_ptr<DrmPlane> { |
| auto p = MakeDrmModePlaneUnique(*dev.GetFd(), plane_id); |
| if (!p) { |
| ALOGE("Failed to get plane %d", plane_id); |
| return {}; |
| } |
| |
| auto plane = std::unique_ptr<DrmPlane>(new DrmPlane(dev, std::move(p))); |
| |
| if (plane->Init() != 0) { |
| ALOGE("Failed to init plane %d", plane_id); |
| return {}; |
| } |
| |
| return plane; |
| } |
| |
| int DrmPlane::Init() { |
| // NOLINTNEXTLINE(cppcoreguidelines-pro-bounds-pointer-arithmetic) |
| formats_ = {plane_->formats, plane_->formats + plane_->count_formats}; |
| |
| DrmProperty p; |
| |
| if (!GetPlaneProperty("type", p)) { |
| return -ENOTSUP; |
| } |
| |
| auto type = p.GetValue(); |
| if (!type) { |
| ALOGE("Failed to get plane type property value"); |
| return -EINVAL; |
| } |
| switch (*type) { |
| case DRM_PLANE_TYPE_OVERLAY: |
| case DRM_PLANE_TYPE_PRIMARY: |
| case DRM_PLANE_TYPE_CURSOR: |
| type_ = (uint32_t)*type; |
| break; |
| default: |
| ALOGE("Invalid plane type %" PRIu64, *type); |
| return -EINVAL; |
| } |
| |
| if (!GetPlaneProperty("CRTC_ID", crtc_property_) || |
| !GetPlaneProperty("FB_ID", fb_property_) || |
| !GetPlaneProperty("CRTC_X", crtc_x_property_) || |
| !GetPlaneProperty("CRTC_Y", crtc_y_property_) || |
| !GetPlaneProperty("CRTC_W", crtc_w_property_) || |
| !GetPlaneProperty("CRTC_H", crtc_h_property_) || |
| !GetPlaneProperty("SRC_X", src_x_property_) || |
| !GetPlaneProperty("SRC_Y", src_y_property_) || |
| !GetPlaneProperty("SRC_W", src_w_property_) || |
| !GetPlaneProperty("SRC_H", src_h_property_)) { |
| return -ENOTSUP; |
| } |
| |
| GetPlaneProperty("zpos", zpos_property_, Presence::kOptional); |
| |
| if (GetPlaneProperty("rotation", rotation_property_, Presence::kOptional)) { |
| rotation_property_.GetEnumMask(transform_enum_mask_); |
| } |
| |
| GetPlaneProperty("alpha", alpha_property_, Presence::kOptional); |
| |
| if (GetPlaneProperty("pixel blend mode", blend_property_, |
| Presence::kOptional)) { |
| blend_property_.AddEnumToMap("Pre-multiplied", BufferBlendMode::kPreMult, |
| blending_enum_map_); |
| blend_property_.AddEnumToMap("Coverage", BufferBlendMode::kCoverage, |
| blending_enum_map_); |
| blend_property_.AddEnumToMap("None", BufferBlendMode::kNone, |
| blending_enum_map_); |
| } |
| |
| GetPlaneProperty("IN_FENCE_FD", in_fence_fd_property_, Presence::kOptional); |
| |
| if (HasNonRgbFormat()) { |
| if (GetPlaneProperty("COLOR_ENCODING", color_encoding_property_, |
| Presence::kOptional)) { |
| color_encoding_property_.AddEnumToMap("ITU-R BT.709 YCbCr", |
| BufferColorSpace::kItuRec709, |
| color_encoding_enum_map_); |
| color_encoding_property_.AddEnumToMap("ITU-R BT.601 YCbCr", |
| BufferColorSpace::kItuRec601, |
| color_encoding_enum_map_); |
| color_encoding_property_.AddEnumToMap("ITU-R BT.2020 YCbCr", |
| BufferColorSpace::kItuRec2020, |
| color_encoding_enum_map_); |
| } |
| |
| if (GetPlaneProperty("COLOR_RANGE", color_range_property_, |
| Presence::kOptional)) { |
| color_range_property_.AddEnumToMap("YCbCr full range", |
| BufferSampleRange::kFullRange, |
| color_range_enum_map_); |
| color_range_property_.AddEnumToMap("YCbCr limited range", |
| BufferSampleRange::kLimitedRange, |
| color_range_enum_map_); |
| } |
| } |
| |
| if (type_ == DRM_PLANE_TYPE_CURSOR && |
| GetPlaneProperty("SIZE_HINTS", size_hints_property_, |
| Presence::kOptional)) { |
| size_hints_property_.GetBlobData(size_hints_); |
| } |
| |
| return 0; |
| } |
| |
| bool DrmPlane::IsCrtcSupported(const DrmCrtc &crtc) const { |
| auto crtc_prop_optval = crtc_property_.GetValue(); |
| auto crtc_prop_val = crtc_prop_optval ? *crtc_prop_optval : 0; |
| |
| if (crtc_prop_val != 0 && crtc_prop_val != crtc.GetId() && |
| GetType() == DRM_PLANE_TYPE_PRIMARY) { |
| // Some DRM driver such as omap_drm allows sharing primary plane between |
| // CRTCs, but the primary plane could not be shared if it has been used by |
| // any CRTC already, which is protected by the plane_switching_crtc function |
| // in the kernel drivers/gpu/drm/drm_atomic.c file. |
| // The current drm_hwc design is not ready to support such scenario yet, |
| // so adding the CRTC status check here to workaround for now. |
| return false; |
| } |
| |
| return ((1 << crtc.GetIndexInResArray()) & plane_->possible_crtcs) != 0; |
| } |
| |
| static uint64_t ToDrmRotation(LayerTransform transform) { |
| /* DRM/KMS uses counter-clockwise rotations, while HWC API uses |
| * clockwise. That's why 90 and 270 are swapped here. |
| */ |
| uint64_t rotation = DRM_MODE_ROTATE_0; |
| |
| if (transform.rotate90) { |
| rotation |= DRM_MODE_ROTATE_270; |
| } |
| |
| if (transform.hflip) { |
| rotation |= DRM_MODE_REFLECT_X; |
| } |
| |
| if (transform.vflip) { |
| rotation |= DRM_MODE_REFLECT_Y; |
| } |
| |
| // TODO(nobody): Respect transform_enum_mask_ to find alternative rotation |
| // values |
| |
| return rotation; |
| } |
| |
| bool DrmPlane::IsValidForLayer(LayerData *layer) { |
| if (layer == nullptr || !layer->bi) { |
| ALOGE("%s: Invalid parameters", __func__); |
| return false; |
| } |
| |
| uint64_t drm_rotation = ToDrmRotation(layer->pi.transform); |
| if ((drm_rotation & transform_enum_mask_) != drm_rotation) { |
| ALOGV("Transform is not supported on plane %d", GetId()); |
| return false; |
| } |
| |
| if (!alpha_property_ && layer->pi.alpha != kAlphaOpaque) { |
| ALOGV("Alpha is not supported on plane %d", GetId()); |
| return false; |
| } |
| |
| if (blending_enum_map_.count(layer->bi->blend_mode) == 0 && |
| layer->bi->blend_mode != BufferBlendMode::kNone && |
| layer->bi->blend_mode != BufferBlendMode::kPreMult) { |
| ALOGV("Blending is not supported on plane %d", GetId()); |
| return false; |
| } |
| |
| auto format = layer->bi->format; |
| if (!IsFormatSupported(format)) { |
| ALOGV("Plane %d does not supports %c%c%c%c format", GetId(), format, |
| format >> 8, format >> 16, format >> 24); |
| return false; |
| } |
| |
| if (type_ == DRM_PLANE_TYPE_CURSOR && |
| !IsBufferValidForCursorPlane(layer->bi.value())) { |
| ALOGV("Buffer size %dx%d is not supported by cursor plane %d", |
| layer->bi->width, layer->bi->height, GetId()); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool DrmPlane::IsFormatSupported(uint32_t format) const { |
| return std::find(std::begin(formats_), std::end(formats_), format) != |
| std::end(formats_); |
| } |
| |
| bool DrmPlane::HasNonRgbFormat() const { |
| return std::find_if_not(std::begin(formats_), std::end(formats_), |
| [](uint32_t format) { |
| return BufferInfoGetter::IsDrmFormatRgb(format); |
| }) != std::end(formats_); |
| } |
| |
| /* Convert float to 16.16 fixed point */ |
| static int To1616FixPt(float in) { |
| constexpr int kBitShift = 16; |
| return int(in * (1 << kBitShift)); |
| } |
| |
| auto DrmPlane::AtomicSetState(drmModeAtomicReq &pset, LayerData &layer, |
| uint32_t zpos, uint32_t crtc_id, |
| DstRectInfo &whole_display_rect) -> int { |
| if (!layer.fb || !layer.bi) { |
| ALOGE("%s: Invalid arguments", __func__); |
| return -EINVAL; |
| } |
| |
| if (zpos_property_ && !zpos_property_.IsImmutable()) { |
| uint64_t min_zpos = 0; |
| |
| // Ignore ret and use min_zpos as 0 by default |
| std::tie(std::ignore, min_zpos) = zpos_property_.RangeMin(); |
| |
| if (!zpos_property_.AtomicSet(pset, zpos + min_zpos)) { |
| return -EINVAL; |
| } |
| } |
| |
| if (layer.acquire_fence && |
| !in_fence_fd_property_.AtomicSet(pset, *layer.acquire_fence)) { |
| return -EINVAL; |
| } |
| |
| auto opt_disp = layer.pi.display_frame.i_rect; |
| if (!layer.pi.display_frame.i_rect) { |
| opt_disp = whole_display_rect.i_rect; |
| } |
| |
| auto opt_src = layer.pi.source_crop.f_rect; |
| if (!layer.pi.source_crop.f_rect) { |
| opt_src = {0.0F, 0.0F, float(layer.bi->width), float(layer.bi->height)}; |
| } |
| |
| if (!opt_disp || !opt_src) { |
| ALOGE("%s: Invalid display frame or source crop", __func__); |
| return -EINVAL; |
| } |
| |
| auto disp = opt_disp.value(); |
| auto src = opt_src.value(); |
| |
| if (type_ == DRM_PLANE_TYPE_CURSOR) { |
| disp.right = disp.left + static_cast<int>(layer.bi->width); |
| disp.bottom = disp.top + static_cast<int>(layer.bi->height); |
| src = {0, 0, static_cast<float>(layer.bi->width), |
| static_cast<float>(layer.bi->height)}; |
| } |
| |
| if (!crtc_property_.AtomicSet(pset, crtc_id) || |
| !fb_property_.AtomicSet(pset, layer.fb->GetFbId()) || |
| !crtc_x_property_.AtomicSet(pset, disp.left) || |
| !crtc_y_property_.AtomicSet(pset, disp.top) || |
| !crtc_w_property_.AtomicSet(pset, disp.right - disp.left) || |
| !crtc_h_property_.AtomicSet(pset, disp.bottom - disp.top) || |
| !src_x_property_.AtomicSet(pset, To1616FixPt(src.left)) || |
| !src_y_property_.AtomicSet(pset, To1616FixPt(src.top)) || |
| !src_w_property_.AtomicSet(pset, To1616FixPt(src.right - src.left)) || |
| !src_h_property_.AtomicSet(pset, To1616FixPt(src.bottom - src.top))) { |
| return -EINVAL; |
| } |
| |
| if (rotation_property_ && |
| !rotation_property_.AtomicSet(pset, ToDrmRotation(layer.pi.transform))) { |
| return -EINVAL; |
| } |
| |
| if (alpha_property_ && |
| !alpha_property_.AtomicSet(pset, |
| std::lround(layer.pi.alpha * UINT16_MAX))) { |
| return -EINVAL; |
| } |
| |
| if (blending_enum_map_.count(layer.bi->blend_mode) != 0 && |
| !blend_property_.AtomicSet(pset, |
| blending_enum_map_[layer.bi->blend_mode])) { |
| return -EINVAL; |
| } |
| |
| if (color_encoding_enum_map_.count(layer.bi->color_space) != 0 && |
| !color_encoding_property_ |
| .AtomicSet(pset, color_encoding_enum_map_[layer.bi->color_space])) { |
| return -EINVAL; |
| } |
| |
| if (color_range_enum_map_.count(layer.bi->sample_range) != 0 && |
| !color_range_property_ |
| .AtomicSet(pset, color_range_enum_map_[layer.bi->sample_range])) { |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| auto DrmPlane::AtomicDisablePlane(drmModeAtomicReq &pset) -> int { |
| if (!crtc_property_.AtomicSet(pset, 0) || !fb_property_.AtomicSet(pset, 0)) { |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| auto DrmPlane::GetPlaneProperty(const char *prop_name, DrmProperty &property, |
| Presence presence) -> bool { |
| auto err = drm_->GetProperty(GetId(), DRM_MODE_OBJECT_PLANE, prop_name, |
| &property); |
| if (err != 0) { |
| if (presence == Presence::kMandatory) { |
| ALOGE("Could not get mandatory property \"%s\" from plane %d", prop_name, |
| GetId()); |
| } else { |
| ALOGV("Could not get optional property \"%s\" from plane %d", prop_name, |
| GetId()); |
| } |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool DrmPlane::HasCursorSizeConstraints() const { |
| return drm_->GetCapCursorSize().has_value() || !size_hints_.empty(); |
| } |
| |
| bool DrmPlane::IsBufferValidForCursorPlane(const BufferInfo &bi) const { |
| if (std::find_if(size_hints_.begin(), size_hints_.end(), |
| [&](const auto &hint) -> bool { |
| return bi.width == hint.width && bi.height == hint.height; |
| }) != size_hints_.end()) { |
| return true; |
| } |
| |
| const auto &cap_size = drm_->GetCapCursorSize(); |
| return cap_size.has_value() && bi.width == cap_size->first && |
| bi.height == cap_size->second; |
| } |
| |
| } // namespace android |