Eino-Ville Talvala | e1f57d6 | 2014-05-29 17:17:07 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 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_TAG "Camera2-Legacy-PerfMeasurement-JNI" |
| 18 | #include <utils/Log.h> |
| 19 | #include <utils/Errors.h> |
| 20 | #include <utils/Trace.h> |
| 21 | #include <utils/Vector.h> |
| 22 | |
| 23 | #include "jni.h" |
| 24 | #include "JNIHelp.h" |
Andreas Gampe | ed6b9df | 2014-11-20 22:02:20 -0800 | [diff] [blame] | 25 | #include "core_jni_helpers.h" |
Eino-Ville Talvala | e1f57d6 | 2014-05-29 17:17:07 -0700 | [diff] [blame] | 26 | |
| 27 | #include <ui/GraphicBuffer.h> |
| 28 | #include <system/window.h> |
| 29 | #include <GLES2/gl2.h> |
| 30 | #include <GLES2/gl2ext.h> |
| 31 | |
| 32 | using namespace android; |
| 33 | |
| 34 | // fully-qualified class name |
| 35 | #define PERF_MEASUREMENT_CLASS_NAME "android/hardware/camera2/legacy/PerfMeasurement" |
| 36 | |
| 37 | /** GL utility methods copied from com_google_android_gles_jni_GLImpl.cpp */ |
| 38 | |
| 39 | // Check if the extension at the head of pExtensions is pExtension. Note that pExtensions is |
| 40 | // terminated by either 0 or space, while pExtension is terminated by 0. |
| 41 | |
| 42 | static bool |
| 43 | extensionEqual(const GLubyte* pExtensions, const GLubyte* pExtension) { |
| 44 | while (true) { |
| 45 | char a = *pExtensions++; |
| 46 | char b = *pExtension++; |
| 47 | bool aEnd = a == '\0' || a == ' '; |
| 48 | bool bEnd = b == '\0'; |
| 49 | if (aEnd || bEnd) { |
| 50 | return aEnd == bEnd; |
| 51 | } |
| 52 | if (a != b) { |
| 53 | return false; |
| 54 | } |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | static const GLubyte* |
| 59 | nextExtension(const GLubyte* pExtensions) { |
| 60 | while (true) { |
| 61 | char a = *pExtensions++; |
| 62 | if (a == '\0') { |
| 63 | return pExtensions-1; |
| 64 | } else if ( a == ' ') { |
| 65 | return pExtensions; |
| 66 | } |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | static bool |
| 71 | checkForExtension(const GLubyte* pExtensions, const GLubyte* pExtension) { |
| 72 | for (; *pExtensions != '\0'; pExtensions = nextExtension(pExtensions)) { |
| 73 | if (extensionEqual(pExtensions, pExtension)) { |
| 74 | return true; |
| 75 | } |
| 76 | } |
| 77 | return false; |
| 78 | } |
| 79 | |
| 80 | /** End copied GL utility methods */ |
| 81 | |
| 82 | bool checkGlError(JNIEnv* env) { |
| 83 | int error; |
| 84 | if ((error = glGetError()) != GL_NO_ERROR) { |
| 85 | jniThrowExceptionFmt(env, "java/lang/IllegalStateException", |
| 86 | "GLES20 error: 0x%d", error); |
| 87 | return true; |
| 88 | } |
| 89 | return false; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Asynchronous low-overhead GL performance measurement using |
| 94 | * http://www.khronos.org/registry/gles/extensions/EXT/EXT_disjoint_timer_query.txt |
| 95 | * |
| 96 | * Measures the duration of GPU processing for a set of GL commands, delivering |
| 97 | * the measurement asynchronously once processing completes. |
| 98 | * |
| 99 | * All calls must come from a single thread with a valid GL context active. |
| 100 | **/ |
| 101 | class PerfMeasurementContext { |
| 102 | private: |
| 103 | Vector<GLuint> mTimingQueries; |
| 104 | size_t mTimingStartIndex; |
| 105 | size_t mTimingEndIndex; |
| 106 | size_t mTimingQueryIndex; |
| 107 | size_t mFreeQueries; |
| 108 | |
| 109 | bool mInitDone; |
| 110 | public: |
| 111 | |
| 112 | /** |
| 113 | * maxQueryCount should be a conservative estimate of how many query objects |
| 114 | * will be active at once, which is a function of the GPU's level of |
| 115 | * pipelining and the frequency of queries. |
| 116 | */ |
| 117 | PerfMeasurementContext(size_t maxQueryCount): |
| 118 | mTimingStartIndex(0), |
| 119 | mTimingEndIndex(0), |
| 120 | mTimingQueryIndex(0) { |
| 121 | mTimingQueries.resize(maxQueryCount); |
| 122 | mFreeQueries = maxQueryCount; |
| 123 | mInitDone = false; |
| 124 | } |
| 125 | |
| 126 | int getMaxQueryCount() { |
| 127 | return mTimingQueries.size(); |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Start a measurement period using the next available query object. |
| 132 | * Returns INVALID_OPERATION if called multiple times in a row, |
| 133 | * and BAD_VALUE if no more query objects are available. |
| 134 | */ |
| 135 | int startGlTimer() { |
| 136 | // Lazy init of queries to avoid needing GL context during construction |
| 137 | if (!mInitDone) { |
| 138 | glGenQueriesEXT(mTimingQueries.size(), mTimingQueries.editArray()); |
| 139 | mInitDone = true; |
| 140 | } |
| 141 | |
| 142 | if (mTimingEndIndex != mTimingStartIndex) { |
| 143 | return INVALID_OPERATION; |
| 144 | } |
| 145 | |
| 146 | if (mFreeQueries == 0) { |
| 147 | return BAD_VALUE; |
| 148 | } |
| 149 | |
| 150 | glBeginQueryEXT(GL_TIME_ELAPSED_EXT, mTimingQueries[mTimingStartIndex]); |
| 151 | |
| 152 | mTimingStartIndex = (mTimingStartIndex + 1) % mTimingQueries.size(); |
| 153 | mFreeQueries--; |
| 154 | |
| 155 | return OK; |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Finish the current measurement period |
| 160 | * Returns INVALID_OPERATION if called before any startGLTimer calls |
| 161 | * or if called multiple times in a row. |
| 162 | */ |
| 163 | int stopGlTimer() { |
| 164 | size_t nextEndIndex = (mTimingEndIndex + 1) % mTimingQueries.size(); |
| 165 | if (nextEndIndex != mTimingStartIndex) { |
| 166 | return INVALID_OPERATION; |
| 167 | } |
| 168 | glEndQueryEXT(GL_TIME_ELAPSED_EXT); |
| 169 | |
| 170 | mTimingEndIndex = nextEndIndex; |
| 171 | |
| 172 | return OK; |
| 173 | } |
| 174 | |
| 175 | static const nsecs_t NO_DURATION_YET = -1L; |
| 176 | static const nsecs_t FAILED_MEASUREMENT = -2L; |
| 177 | |
| 178 | /** |
| 179 | * Get the next available duration measurement. |
| 180 | * |
| 181 | * Returns NO_DURATION_YET if no new measurement is available, |
| 182 | * and FAILED_MEASUREMENT if an error occurred during the next |
| 183 | * measurement period. |
| 184 | * |
| 185 | * Otherwise returns a positive number of nanoseconds measuring the |
| 186 | * duration of the oldest completed query. |
| 187 | */ |
| 188 | nsecs_t getNextGlDuration() { |
| 189 | if (!mInitDone) { |
| 190 | // No start/stop called yet |
| 191 | return NO_DURATION_YET; |
| 192 | } |
| 193 | |
| 194 | GLint available; |
| 195 | glGetQueryObjectivEXT(mTimingQueries[mTimingQueryIndex], |
| 196 | GL_QUERY_RESULT_AVAILABLE_EXT, &available); |
| 197 | if (!available) { |
| 198 | return NO_DURATION_YET; |
| 199 | } |
| 200 | |
| 201 | GLint64 duration = FAILED_MEASUREMENT; |
| 202 | GLint disjointOccurred; |
| 203 | glGetIntegerv(GL_GPU_DISJOINT_EXT, &disjointOccurred); |
| 204 | |
| 205 | if (!disjointOccurred) { |
| 206 | glGetQueryObjecti64vEXT(mTimingQueries[mTimingQueryIndex], |
| 207 | GL_QUERY_RESULT_EXT, |
| 208 | &duration); |
| 209 | } |
| 210 | |
| 211 | mTimingQueryIndex = (mTimingQueryIndex + 1) % mTimingQueries.size(); |
| 212 | mFreeQueries++; |
| 213 | |
| 214 | return static_cast<nsecs_t>(duration); |
| 215 | } |
| 216 | |
| 217 | static bool isMeasurementSupported() { |
| 218 | const GLubyte* extensions = glGetString(GL_EXTENSIONS); |
| 219 | return checkForExtension(extensions, |
| 220 | reinterpret_cast<const GLubyte*>("GL_EXT_disjoint_timer_query")); |
| 221 | } |
| 222 | |
| 223 | }; |
| 224 | |
| 225 | PerfMeasurementContext* getContext(jlong context) { |
| 226 | return reinterpret_cast<PerfMeasurementContext*>(context); |
| 227 | } |
| 228 | |
| 229 | extern "C" { |
| 230 | |
| 231 | static jlong PerfMeasurement_nativeCreateContext(JNIEnv* env, jobject thiz, |
| 232 | jint maxQueryCount) { |
| 233 | PerfMeasurementContext *context = new PerfMeasurementContext(maxQueryCount); |
| 234 | return reinterpret_cast<jlong>(context); |
| 235 | } |
| 236 | |
| 237 | static void PerfMeasurement_nativeDeleteContext(JNIEnv* env, jobject thiz, |
| 238 | jlong contextHandle) { |
| 239 | PerfMeasurementContext *context = getContext(contextHandle); |
| 240 | delete(context); |
| 241 | } |
| 242 | |
| 243 | static jboolean PerfMeasurement_nativeQuerySupport(JNIEnv* env, jobject thiz) { |
| 244 | bool supported = PerfMeasurementContext::isMeasurementSupported(); |
| 245 | checkGlError(env); |
| 246 | return static_cast<jboolean>(supported); |
| 247 | } |
| 248 | |
| 249 | static void PerfMeasurement_nativeStartGlTimer(JNIEnv* env, jobject thiz, |
| 250 | jlong contextHandle) { |
| 251 | |
| 252 | PerfMeasurementContext *context = getContext(contextHandle); |
| 253 | status_t err = context->startGlTimer(); |
| 254 | if (err != OK) { |
| 255 | switch (err) { |
| 256 | case INVALID_OPERATION: |
| 257 | jniThrowExceptionFmt(env, "java/lang/IllegalStateException", |
| 258 | "Mismatched start/end GL timing calls"); |
| 259 | return; |
| 260 | case BAD_VALUE: |
| 261 | jniThrowExceptionFmt(env, "java/lang/IllegalStateException", |
| 262 | "Too many timing queries in progress, max %d", |
| 263 | context->getMaxQueryCount()); |
| 264 | return; |
| 265 | default: |
| 266 | jniThrowExceptionFmt(env, "java/lang/IllegalStateException", |
| 267 | "Unknown error starting GL timing"); |
| 268 | return; |
| 269 | } |
| 270 | } |
| 271 | checkGlError(env); |
| 272 | } |
| 273 | |
| 274 | static void PerfMeasurement_nativeStopGlTimer(JNIEnv* env, jobject thiz, |
| 275 | jlong contextHandle) { |
| 276 | |
| 277 | PerfMeasurementContext *context = getContext(contextHandle); |
| 278 | status_t err = context->stopGlTimer(); |
| 279 | if (err != OK) { |
| 280 | switch (err) { |
| 281 | case INVALID_OPERATION: |
| 282 | jniThrowExceptionFmt(env, "java/lang/IllegalStateException", |
| 283 | "Mismatched start/end GL timing calls"); |
| 284 | return; |
| 285 | default: |
| 286 | jniThrowExceptionFmt(env, "java/lang/IllegalStateException", |
| 287 | "Unknown error ending GL timing"); |
| 288 | return; |
| 289 | } |
| 290 | } |
| 291 | checkGlError(env); |
| 292 | } |
| 293 | |
| 294 | static jlong PerfMeasurement_nativeGetNextGlDuration(JNIEnv* env, |
| 295 | jobject thiz, jlong contextHandle) { |
| 296 | PerfMeasurementContext *context = getContext(contextHandle); |
| 297 | nsecs_t duration = context->getNextGlDuration(); |
| 298 | |
| 299 | checkGlError(env); |
| 300 | return static_cast<jlong>(duration); |
| 301 | } |
| 302 | |
| 303 | } // extern "C" |
| 304 | |
Daniel Micay | 76f6a86 | 2015-09-19 17:31:01 -0400 | [diff] [blame] | 305 | static const JNINativeMethod gPerfMeasurementMethods[] = { |
Eino-Ville Talvala | e1f57d6 | 2014-05-29 17:17:07 -0700 | [diff] [blame] | 306 | { "nativeCreateContext", |
| 307 | "(I)J", |
| 308 | (jlong *)PerfMeasurement_nativeCreateContext }, |
| 309 | { "nativeDeleteContext", |
| 310 | "(J)V", |
| 311 | (void *)PerfMeasurement_nativeDeleteContext }, |
| 312 | { "nativeQuerySupport", |
| 313 | "()Z", |
| 314 | (jboolean *)PerfMeasurement_nativeQuerySupport }, |
| 315 | { "nativeStartGlTimer", |
| 316 | "(J)V", |
| 317 | (void *)PerfMeasurement_nativeStartGlTimer }, |
| 318 | { "nativeStopGlTimer", |
| 319 | "(J)V", |
| 320 | (void *)PerfMeasurement_nativeStopGlTimer }, |
| 321 | { "nativeGetNextGlDuration", |
| 322 | "(J)J", |
| 323 | (jlong *)PerfMeasurement_nativeGetNextGlDuration } |
| 324 | }; |
| 325 | |
| 326 | |
| 327 | // Get all the required offsets in java class and register native functions |
| 328 | int register_android_hardware_camera2_legacy_PerfMeasurement(JNIEnv* env) |
| 329 | { |
| 330 | // Register native functions |
Andreas Gampe | ed6b9df | 2014-11-20 22:02:20 -0800 | [diff] [blame] | 331 | return RegisterMethodsOrDie(env, |
Eino-Ville Talvala | e1f57d6 | 2014-05-29 17:17:07 -0700 | [diff] [blame] | 332 | PERF_MEASUREMENT_CLASS_NAME, |
| 333 | gPerfMeasurementMethods, |
| 334 | NELEM(gPerfMeasurementMethods)); |
| 335 | } |