1 /*
2 * Copyright (C) 2024 The Android Open Source Project
3 *
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
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
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.
15 */
16
17 // #define LOG_NDEBUG 0
18 #define LOG_TAG "VirtualCameraTestInstance"
19
20 #include "VirtualCameraTestInstance.h"
21
22 #include <atomic>
23 #include <chrono>
24 #include <memory>
25 #include <mutex>
26 #include <ratio>
27 #include <thread>
28
29 #include "GLES/gl.h"
30 #include "android/binder_auto_utils.h"
31 #include "android/native_window.h"
32 #include "log/log.h"
33 #include "util/EglDisplayContext.h"
34 #include "util/EglProgram.h"
35
36 namespace android {
37 namespace companion {
38 namespace virtualcamera {
39
40 using ::aidl::android::companion::virtualcamera::Format;
41 using ::aidl::android::view::Surface;
42 using ::ndk::ScopedAStatus;
43
44 namespace {
45
nativeWindowFromSurface(const Surface & surface)46 std::shared_ptr<ANativeWindow> nativeWindowFromSurface(const Surface& surface) {
47 ANativeWindow* nativeWindow = surface.get();
48 if (nativeWindow != nullptr) {
49 ANativeWindow_acquire(nativeWindow);
50 }
51 return std::shared_ptr<ANativeWindow>(nativeWindow, ANativeWindow_release);
52 }
53
getCurrentTimestamp()54 std::chrono::nanoseconds getCurrentTimestamp() {
55 return std::chrono::duration_cast<std::chrono::nanoseconds>(
56 std::chrono::steady_clock::now().time_since_epoch());
57 }
58
59 } // namespace
60
TestPatternRenderer(std::shared_ptr<ANativeWindow> nativeWindow,int fps)61 TestPatternRenderer::TestPatternRenderer(
62 std::shared_ptr<ANativeWindow> nativeWindow, int fps)
63 : mFps(fps), mNativeWindow(nativeWindow) {
64 }
65
start()66 void TestPatternRenderer::start() {
67 std::lock_guard<std::mutex> lock(mLock);
68 if (mRunning.exchange(true, std::memory_order_relaxed)) {
69 ALOGW("Render thread already started.");
70 return;
71 }
72 mThread =
73 std::thread(&TestPatternRenderer::renderThreadLoop, this, mNativeWindow);
74 }
75
stop()76 void TestPatternRenderer::stop() {
77 std::lock_guard<std::mutex> lock(mLock);
78 if (!mRunning.exchange(false, std::memory_order_relaxed)) {
79 ALOGW("Render thread already stopped.");
80 return;
81 }
82 mThread.detach();
83 mRunning = false;
84 }
85
renderThreadLoop(std::shared_ptr<ANativeWindow> nativeWindow)86 void TestPatternRenderer::renderThreadLoop(
87 std::shared_ptr<ANativeWindow> nativeWindow) {
88 // Prevent destruction of this instance until the thread terminates.
89 std::shared_ptr<TestPatternRenderer> thiz = shared_from_this();
90
91 ALOGV("Starting test client render loop");
92
93 EglDisplayContext eglDisplayContext(nativeWindow);
94 EglTestPatternProgram testPatternProgram;
95
96 const std::chrono::nanoseconds frameDuration(
97 static_cast<uint64_t>(1e9 / mFps));
98
99 std::chrono::nanoseconds lastFrameTs(0);
100 int frameNumber = 0;
101 while (mRunning) {
102 // Wait for appropriate amount of time to meet configured FPS.
103 std::chrono::nanoseconds ts = getCurrentTimestamp();
104 std::chrono::nanoseconds currentDuration = ts - lastFrameTs;
105 if (currentDuration < frameDuration) {
106 std::this_thread::sleep_for(frameDuration - currentDuration);
107 }
108
109 // Render the test pattern and update timestamp.
110 testPatternProgram.draw(ts);
111 eglDisplayContext.swapBuffers();
112 lastFrameTs = getCurrentTimestamp();
113 }
114
115 ALOGV("Terminating test client render loop");
116 }
117
VirtualCameraTestInstance(const int fps)118 VirtualCameraTestInstance::VirtualCameraTestInstance(const int fps)
119 : mFps(fps) {
120 }
121
onStreamConfigured(const int32_t streamId,const Surface & surface,const int32_t width,const int32_t height,const Format pixelFormat)122 ScopedAStatus VirtualCameraTestInstance::onStreamConfigured(
123 const int32_t streamId, const Surface& surface, const int32_t width,
124 const int32_t height, const Format pixelFormat) {
125 ALOGV("%s: streamId %d, %dx%d pixFmt=%s", __func__, streamId, width, height,
126 toString(pixelFormat).c_str());
127
128 auto renderer = std::make_shared<TestPatternRenderer>(
129 nativeWindowFromSurface(surface), mFps);
130
131 std::lock_guard<std::mutex> lock(mLock);
132 if (mInputRenderers.try_emplace(streamId, renderer).second) {
133 renderer->start();
134 } else {
135 ALOGE(
136 "%s: Input stream with id %d is already active, ignoring "
137 "onStreamConfigured call",
138 __func__, streamId);
139 }
140
141 return ScopedAStatus::ok();
142 }
143
onProcessCaptureRequest(const int32_t,const int32_t)144 ScopedAStatus VirtualCameraTestInstance::onProcessCaptureRequest(
145 const int32_t /*in_streamId*/, const int32_t /*in_frameId*/) {
146 return ScopedAStatus::ok();
147 }
148
onStreamClosed(const int32_t streamId)149 ScopedAStatus VirtualCameraTestInstance::onStreamClosed(const int32_t streamId) {
150 ALOGV("%s: streamId %d", __func__, streamId);
151
152 std::shared_ptr<TestPatternRenderer> renderer;
153 {
154 std::lock_guard<std::mutex> lock(mLock);
155 auto it = mInputRenderers.find(streamId);
156 if (it != mInputRenderers.end()) {
157 renderer = std::move(it->second);
158 mInputRenderers.erase(it);
159 }
160 }
161 if (renderer != nullptr) {
162 renderer->stop();
163 }
164 return ScopedAStatus::ok();
165 }
166
167 } // namespace virtualcamera
168 } // namespace companion
169 } // namespace android
170