| /* |
| * 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. |
| */ |
| |
| #ifndef ANDROID_DRM_DISPLAY_COMPOSITOR_H_ |
| #define ANDROID_DRM_DISPLAY_COMPOSITOR_H_ |
| |
| #include "drmdisplaycomposition.h" |
| #include "drmframebuffer.h" |
| #include "drmhwcomposer.h" |
| #include "resourcemanager.h" |
| #include "vsyncworker.h" |
| |
| #include <pthread.h> |
| #include <memory> |
| #include <sstream> |
| #include <tuple> |
| |
| #include <hardware/hardware.h> |
| #include <hardware/hwcomposer.h> |
| |
| // One for the front, one for the back, and one for cases where we need to |
| // squash a frame that the hw can't display with hw overlays. |
| #define DRM_DISPLAY_BUFFERS 3 |
| |
| // If a scene is still for this number of vblanks flatten it to reduce power |
| // consumption. |
| #define FLATTEN_COUNTDOWN_INIT 60 |
| |
| namespace android { |
| |
| class DrmDisplayCompositor { |
| public: |
| DrmDisplayCompositor(); |
| ~DrmDisplayCompositor(); |
| |
| int Init(ResourceManager *resource_manager, int display); |
| |
| std::unique_ptr<DrmDisplayComposition> CreateComposition() const; |
| std::unique_ptr<DrmDisplayComposition> CreateInitializedComposition() const; |
| int ApplyComposition(std::unique_ptr<DrmDisplayComposition> composition); |
| int TestComposition(DrmDisplayComposition *composition); |
| int Composite(); |
| void Dump(std::ostringstream *out) const; |
| void Vsync(int display, int64_t timestamp); |
| void ClearDisplay(); |
| int TakeOutFence() { |
| if (!active_composition_) |
| return -1; |
| return active_composition_->take_out_fence(); |
| } |
| |
| std::tuple<uint32_t, uint32_t, int> GetActiveModeResolution(); |
| |
| private: |
| struct ModeState { |
| bool needs_modeset = false; |
| DrmMode mode; |
| uint32_t blob_id = 0; |
| uint32_t old_blob_id = 0; |
| }; |
| |
| DrmDisplayCompositor(const DrmDisplayCompositor &) = delete; |
| |
| // We'll wait for acquire fences to fire for kAcquireWaitTimeoutMs, |
| // kAcquireWaitTries times, logging a warning in between. |
| static const int kAcquireWaitTries = 5; |
| static const int kAcquireWaitTimeoutMs = 100; |
| |
| int CommitFrame(DrmDisplayComposition *display_comp, bool test_only, |
| DrmConnector *writeback_conn = NULL, |
| DrmHwcBuffer *writeback_buffer = NULL); |
| int SetupWritebackCommit(drmModeAtomicReqPtr pset, uint32_t crtc_id, |
| DrmConnector *writeback_conn, |
| DrmHwcBuffer *writeback_buffer); |
| int ApplyDpms(DrmDisplayComposition *display_comp); |
| int DisablePlanes(DrmDisplayComposition *display_comp); |
| |
| void ApplyFrame(std::unique_ptr<DrmDisplayComposition> composition, |
| int status, bool writeback = false); |
| int FlattenActiveComposition(); |
| int FlattenSerial(DrmConnector *writeback_conn); |
| int FlattenConcurrent(DrmConnector *writeback_conn); |
| int FlattenOnDisplay(std::unique_ptr<DrmDisplayComposition> &src, |
| DrmConnector *writeback_conn, DrmMode &src_mode, |
| DrmHwcLayer *writeback_layer); |
| |
| bool CountdownExpired() const; |
| |
| std::tuple<int, uint32_t> CreateModeBlob(const DrmMode &mode); |
| |
| ResourceManager *resource_manager_; |
| int display_; |
| |
| std::unique_ptr<DrmDisplayComposition> active_composition_; |
| |
| bool initialized_; |
| bool active_; |
| bool use_hw_overlays_; |
| |
| ModeState mode_; |
| |
| int framebuffer_index_; |
| DrmFramebuffer framebuffers_[DRM_DISPLAY_BUFFERS]; |
| |
| // mutable since we need to acquire in Dump() |
| mutable pthread_mutex_t lock_; |
| |
| // State tracking progress since our last Dump(). These are mutable since |
| // we need to reset them on every Dump() call. |
| mutable uint64_t dump_frames_composited_; |
| mutable uint64_t dump_last_timestamp_ns_; |
| VSyncWorker vsync_worker_; |
| int64_t flatten_countdown_; |
| std::unique_ptr<Planner> planner_; |
| int writeback_fence_; |
| }; |
| } // namespace android |
| |
| #endif // ANDROID_DRM_DISPLAY_COMPOSITOR_H_ |