Yury Khmel | 9dbde7b | 2015-08-31 17:51:42 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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 | package android.surfacecomposition; |
| 17 | |
| 18 | import java.util.Random; |
| 19 | |
| 20 | import android.content.Context; |
| 21 | import android.graphics.Canvas; |
| 22 | import android.graphics.Paint; |
| 23 | import android.view.Surface; |
| 24 | import android.view.SurfaceHolder; |
| 25 | import android.view.SurfaceView; |
| 26 | |
| 27 | /** |
| 28 | * This provides functionality to measure Surface update frame rate. The idea is to |
| 29 | * constantly invalidates Surface in a separate thread. Lowest possible way is to |
| 30 | * use SurfaceView which works with Surface. This gives a very small overhead |
| 31 | * and very close to Android internals. Note, that lockCanvas is blocking |
| 32 | * methods and it returns once SurfaceFlinger consumes previous buffer. This |
| 33 | * gives the change to measure real performance of Surface compositor. |
| 34 | */ |
| 35 | public class CustomSurfaceView extends SurfaceView implements SurfaceHolder.Callback { |
| 36 | private final static long DURATION_TO_WARMUP_MS = 50; |
| 37 | private final static long DURATION_TO_MEASURE_ROUGH_MS = 500; |
| 38 | private final static long DURATION_TO_MEASURE_PRECISE_MS = 3000; |
| 39 | private final static Random mRandom = new Random(); |
| 40 | |
| 41 | private final Object mSurfaceLock = new Object(); |
| 42 | private Surface mSurface; |
| 43 | private boolean mDrawNameOnReady = true; |
| 44 | private boolean mSurfaceWasChanged = false; |
| 45 | private String mName; |
| 46 | private Canvas mCanvas; |
| 47 | |
| 48 | class ValidateThread extends Thread { |
| 49 | private double mFPS = 0.0f; |
| 50 | // Used to support early exit and prevent long computation. |
| 51 | private double mBadFPS; |
| 52 | private double mPerfectFPS; |
| 53 | |
| 54 | ValidateThread(double badFPS, double perfectFPS) { |
| 55 | mBadFPS = badFPS; |
| 56 | mPerfectFPS = perfectFPS; |
| 57 | } |
| 58 | |
| 59 | public void run() { |
| 60 | long startTime = System.currentTimeMillis(); |
| 61 | while (System.currentTimeMillis() - startTime < DURATION_TO_WARMUP_MS) { |
| 62 | invalidateSurface(false); |
| 63 | } |
| 64 | |
| 65 | startTime = System.currentTimeMillis(); |
| 66 | long endTime; |
| 67 | int frameCnt = 0; |
| 68 | while (true) { |
| 69 | invalidateSurface(false); |
| 70 | endTime = System.currentTimeMillis(); |
| 71 | ++frameCnt; |
| 72 | mFPS = (double)frameCnt * 1000.0 / (endTime - startTime); |
| 73 | if ((endTime - startTime) >= DURATION_TO_MEASURE_ROUGH_MS) { |
| 74 | // Test if result looks too bad or perfect and stop early. |
| 75 | if (mFPS <= mBadFPS || mFPS >= mPerfectFPS) { |
| 76 | break; |
| 77 | } |
| 78 | } |
| 79 | if ((endTime - startTime) >= DURATION_TO_MEASURE_PRECISE_MS) { |
| 80 | break; |
| 81 | } |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | public double getFPS() { |
| 86 | return mFPS; |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | public CustomSurfaceView(Context context, String name) { |
| 91 | super(context); |
| 92 | mName = name; |
| 93 | getHolder().addCallback(this); |
| 94 | } |
| 95 | |
| 96 | public void setMode(int pixelFormat, boolean drawNameOnReady) { |
| 97 | mDrawNameOnReady = drawNameOnReady; |
| 98 | getHolder().setFormat(pixelFormat); |
| 99 | } |
| 100 | |
| 101 | public void acquireCanvas() { |
| 102 | synchronized (mSurfaceLock) { |
| 103 | if (mCanvas != null) { |
| 104 | throw new RuntimeException("Surface canvas was already acquired."); |
| 105 | } |
| 106 | if (mSurface != null) { |
| 107 | mCanvas = mSurface.lockCanvas(null); |
| 108 | } |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | public void releaseCanvas() { |
| 113 | synchronized (mSurfaceLock) { |
| 114 | if (mCanvas != null) { |
| 115 | if (mSurface == null) { |
| 116 | throw new RuntimeException( |
| 117 | "Surface was destroyed but canvas was not released."); |
| 118 | } |
| 119 | mSurface.unlockCanvasAndPost(mCanvas); |
| 120 | mCanvas = null; |
| 121 | } |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * Invalidate surface. |
| 127 | */ |
| 128 | private void invalidateSurface(boolean drawSurfaceId) { |
| 129 | synchronized (mSurfaceLock) { |
| 130 | if (mSurface != null) { |
| 131 | Canvas canvas = mSurface.lockCanvas(null); |
| 132 | // Draw surface name for debug purpose only. This does not affect the test |
| 133 | // because it is drawn only during allocation. |
| 134 | if (drawSurfaceId) { |
| 135 | int textSize = canvas.getHeight() / 24; |
| 136 | Paint paint = new Paint(); |
| 137 | paint.setTextSize(textSize); |
| 138 | int textWidth = (int)(paint.measureText(mName) + 0.5f); |
| 139 | int x = mRandom.nextInt(canvas.getWidth() - textWidth); |
| 140 | int y = textSize + mRandom.nextInt(canvas.getHeight() - textSize); |
| 141 | // Create effect of fog to visually control correctness of composition. |
| 142 | paint.setColor(0xFFFF8040); |
| 143 | canvas.drawARGB(32, 255, 255, 255); |
| 144 | canvas.drawText(mName, x, y, paint); |
| 145 | } |
| 146 | mSurface.unlockCanvasAndPost(canvas); |
| 147 | } |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * Wait until surface is created and ready to use or return immediately if surface |
| 153 | * already exists. |
| 154 | */ |
| 155 | public void waitForSurfaceReady() { |
| 156 | synchronized (mSurfaceLock) { |
| 157 | if (mSurface == null) { |
| 158 | try { |
| 159 | mSurfaceLock.wait(5000); |
| 160 | } catch(InterruptedException e) { |
| 161 | e.printStackTrace(); |
| 162 | } |
| 163 | } |
| 164 | if (mSurface == null) |
| 165 | throw new RuntimeException("Surface is not ready."); |
| 166 | mSurfaceWasChanged = false; |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Wait until surface is destroyed or return immediately if surface does not exist. |
| 172 | */ |
| 173 | public void waitForSurfaceDestroyed() { |
| 174 | synchronized (mSurfaceLock) { |
| 175 | if (mSurface != null) { |
| 176 | try { |
| 177 | mSurfaceLock.wait(5000); |
| 178 | } catch(InterruptedException e) { |
| 179 | e.printStackTrace(); |
| 180 | } |
| 181 | } |
| 182 | if (mSurface != null) |
| 183 | throw new RuntimeException("Surface still exists."); |
| 184 | mSurfaceWasChanged = false; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Validate that surface has not been changed since waitForSurfaceReady or |
| 190 | * waitForSurfaceDestroyed. |
| 191 | */ |
| 192 | public void validateSurfaceNotChanged() { |
| 193 | synchronized (mSurfaceLock) { |
| 194 | if (mSurfaceWasChanged) { |
| 195 | throw new RuntimeException("Surface was changed during the test execution."); |
| 196 | } |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | public double measureFPS(double badFPS, double perfectFPS) { |
| 201 | try { |
| 202 | ValidateThread validateThread = new ValidateThread(badFPS, perfectFPS); |
| 203 | validateThread.start(); |
| 204 | validateThread.join(); |
| 205 | return validateThread.getFPS(); |
| 206 | } catch (InterruptedException e) { |
| 207 | throw new RuntimeException(e); |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | @Override |
| 212 | public void surfaceCreated(SurfaceHolder holder) { |
| 213 | synchronized (mSurfaceLock) { |
| 214 | mSurfaceWasChanged = true; |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | @Override |
| 219 | public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { |
| 220 | // This method is always called at least once, after surfaceCreated. |
| 221 | synchronized (mSurfaceLock) { |
| 222 | mSurface = holder.getSurface(); |
| 223 | // We only need to invalidate the surface for the compositor performance test so that |
| 224 | // it gets included in the composition process. For allocation performance we |
| 225 | // don't need to invalidate surface and this allows us to remove non-necessary |
| 226 | // surface invalidation from the test. |
| 227 | if (mDrawNameOnReady) { |
| 228 | invalidateSurface(true); |
| 229 | } |
| 230 | mSurfaceWasChanged = true; |
| 231 | mSurfaceLock.notify(); |
| 232 | } |
| 233 | } |
| 234 | |
| 235 | @Override |
| 236 | public void surfaceDestroyed(SurfaceHolder holder) { |
| 237 | synchronized (mSurfaceLock) { |
| 238 | mSurface = null; |
| 239 | mSurfaceWasChanged = true; |
| 240 | mSurfaceLock.notify(); |
| 241 | } |
| 242 | } |
| 243 | } |