140 lines
4.5 KiB
C++
Executable File
140 lines
4.5 KiB
C++
Executable File
/*
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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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#ifndef ANDROID_DRM_PLATFORM_H_
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#define ANDROID_DRM_PLATFORM_H_
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#include "drmdisplaycomposition.h"
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#include "drmlayer.h"
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#include <hardware/hardware.h>
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#include <hardware/hwcomposer.h>
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#include <map>
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#include <vector>
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#include <stack>
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#define UNUSED(x) (void)(x)
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namespace android {
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class DrmDevice;
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class Importer {
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public:
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virtual ~Importer() {
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}
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// Creates a platform-specific importer instance
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static Importer *CreateInstance(DrmDevice *drm);
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// Imports the buffer referred to by handle into bo.
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//
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// Note: This can be called from a different thread than ReleaseBuffer. The
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// implementation is responsible for ensuring thread safety.
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virtual int ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) = 0;
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// Releases the buffer object (ie: does the inverse of ImportBuffer)
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//
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// Note: This can be called from a different thread than ImportBuffer. The
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// implementation is responsible for ensuring thread safety.
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virtual int ReleaseBuffer(hwc_drm_bo_t *bo) = 0;
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// Checks if importer can import the buffer.
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virtual bool CanImportBuffer(buffer_handle_t handle) = 0;
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};
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class Planner {
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public:
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class PlanStage {
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public:
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virtual ~PlanStage() {
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}
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virtual bool SupportPlatform(uint32_t soc_id) = 0;
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virtual int TryHwcPolicy(std::vector<DrmCompositionPlane> *composition,
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std::vector<DrmHwcLayer*> &layers,
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std::vector<PlaneGroup *> &plane_groups,
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DrmCrtc *crtc,
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bool gles_policy) = 0;
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virtual int MatchPlanes(std::vector<DrmCompositionPlane> *composition,
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std::vector<DrmHwcLayer*> &layers,
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DrmCrtc *crtc,
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std::vector<PlaneGroup *> &plane_groups) = 0;
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protected:
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// Inserts the given layer:plane in the composition at the back
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virtual int MatchPlane(std::vector<DrmCompositionPlane> *composition_planes,
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std::vector<PlaneGroup *> &plane_groups,
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DrmCompositionPlane::Type type, DrmCrtc *crtc,
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std::pair<int, std::vector<DrmHwcLayer*>> layers, int zpos, bool match_best) = 0;
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};
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// Creates a planner instance with platform-specific planning stages
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static std::unique_ptr<Planner> CreateInstance(DrmDevice *drm);
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// Takes a stack of layers and provisions hardware planes for them. If the
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// entire stack can't fit in hardware, FIXME
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//
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// @layers: a map of index:layer of layers to composite
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// @primary_planes: a vector of primary planes available for this frame
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// @overlay_planes: a vector of overlay planes available for this frame
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//
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// Returns: A tuple with the status of the operation (0 for success) and
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// a vector of the resulting plan (ie: layer->plane mapping).
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std::tuple<int, std::vector<DrmCompositionPlane>> TryHwcPolicy(
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std::vector<DrmHwcLayer*> &layers,
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std::vector<PlaneGroup *> &plane_groups,
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DrmCrtc *crtc,
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bool gles_policy);
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template <typename T, typename... A>
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void AddStage(A &&... args) {
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stages_.emplace_back(
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std::unique_ptr<PlanStage>(new T(std::forward(args)...)));
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}
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private:
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std::vector<std::unique_ptr<PlanStage>> stages_;
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};
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class HwcPlatform {
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public:
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class Platform {
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public:
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virtual ~Platform() {
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}
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virtual bool SupportPlatform(uint32_t soc_id) = 0;
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virtual int TryAssignPlane(DrmDevice* drm) = 0;
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};
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// Creates a planner instance with platform-specific planning stages
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static std::unique_ptr<HwcPlatform> CreateInstance(DrmDevice *drm);
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// Try to assign DrmPlane to display
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int TryAssignPlane(DrmDevice* drm);
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template <typename T, typename... A>
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void AddStage(A &&... args) {
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stages_.emplace_back(
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std::unique_ptr<Platform>(new T(std::forward(args)...)));
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}
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private:
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std::vector<std::unique_ptr<Platform>> stages_;
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};
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} // namespace android
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#endif |