2 * Copyright (C) 2015 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef ANDROID_DRM_DISPLAY_COMPOSITOR_H_
18 #define ANDROID_DRM_DISPLAY_COMPOSITOR_H_
20 #include "drm_hwcomposer.h"
21 #include "drmcomposition.h"
22 #include "drmcompositorworker.h"
23 #include "drmframebuffer.h"
29 #include <hardware/hardware.h>
30 #include <hardware/hwcomposer.h>
32 #define DRM_DISPLAY_BUFFERS 2
36 class GLWorkerCompositor;
38 class DrmDisplayCompositor {
40 DrmDisplayCompositor();
41 ~DrmDisplayCompositor();
43 int Init(DrmResources *drm, int display);
45 int QueueComposition(std::unique_ptr<DrmDisplayComposition> composition);
47 void Dump(std::ostringstream *out) const;
49 bool HaveQueuedComposites() const;
52 DrmDisplayCompositor(const DrmDisplayCompositor &) = delete;
54 // Set to 50ms which is somewhere between a reasonable amount of time to
55 // wait for a long render and a small enough delay to limit jank.
56 static const int kAcquireWaitTimeoutMs = 50;
58 int ApplyPreComposite(DrmDisplayComposition *display_comp);
59 int ApplyFrame(DrmDisplayComposition *display_comp);
60 int ApplyDpms(DrmDisplayComposition *display_comp);
65 DrmCompositorWorker worker_;
67 std::queue<std::unique_ptr<DrmDisplayComposition>> composite_queue_;
68 std::unique_ptr<DrmDisplayComposition> active_composition_;
73 int framebuffer_index_;
74 DrmFramebuffer framebuffers_[DRM_DISPLAY_BUFFERS];
75 std::unique_ptr<GLWorkerCompositor> pre_compositor_;
77 // mutable since we need to acquire in HaveQueuedComposites
78 mutable pthread_mutex_t lock_;
80 // State tracking progress since our last Dump(). These are mutable since
81 // we need to reset them on every Dump() call.
82 mutable uint64_t dump_frames_composited_;
83 mutable uint64_t dump_last_timestamp_ns_;
87 #endif // ANDROID_DRM_DISPLAY_COMPOSITOR_H_