Andreas Huber | 88572f7 | 2012-02-21 11:47:18 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012, 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 "MediaExtractor-JNI" |
| 19 | #include <utils/Log.h> |
| 20 | |
| 21 | #include "android_media_MediaExtractor.h" |
| 22 | |
| 23 | #include "android_media_Utils.h" |
| 24 | #include "android_runtime/AndroidRuntime.h" |
| 25 | #include "jni.h" |
| 26 | #include "JNIHelp.h" |
| 27 | |
| 28 | #include <media/stagefright/foundation/ABuffer.h> |
| 29 | #include <media/stagefright/foundation/ADebug.h> |
| 30 | #include <media/stagefright/foundation/AMessage.h> |
| 31 | #include <media/stagefright/DataSource.h> |
| 32 | #include <media/stagefright/MediaErrors.h> |
| 33 | #include <media/stagefright/NuMediaExtractor.h> |
| 34 | |
| 35 | namespace android { |
| 36 | |
| 37 | struct fields_t { |
| 38 | jfieldID context; |
| 39 | }; |
| 40 | |
| 41 | static fields_t gFields; |
| 42 | |
| 43 | //////////////////////////////////////////////////////////////////////////////// |
| 44 | |
| 45 | JMediaExtractor::JMediaExtractor(JNIEnv *env, jobject thiz) |
| 46 | : mClass(NULL), |
| 47 | mObject(NULL) { |
| 48 | jclass clazz = env->GetObjectClass(thiz); |
| 49 | CHECK(clazz != NULL); |
| 50 | |
| 51 | mClass = (jclass)env->NewGlobalRef(clazz); |
| 52 | mObject = env->NewWeakGlobalRef(thiz); |
| 53 | |
| 54 | mImpl = new NuMediaExtractor; |
| 55 | } |
| 56 | |
| 57 | JMediaExtractor::~JMediaExtractor() { |
| 58 | JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| 59 | |
| 60 | env->DeleteWeakGlobalRef(mObject); |
| 61 | mObject = NULL; |
| 62 | env->DeleteGlobalRef(mClass); |
| 63 | mClass = NULL; |
| 64 | } |
| 65 | |
| 66 | status_t JMediaExtractor::setDataSource(const char *path) { |
| 67 | return mImpl->setDataSource(path); |
| 68 | } |
| 69 | |
| 70 | size_t JMediaExtractor::countTracks() const { |
| 71 | return mImpl->countTracks(); |
| 72 | } |
| 73 | |
| 74 | status_t JMediaExtractor::getTrackFormat(size_t index, jobject *format) const { |
| 75 | sp<AMessage> msg; |
| 76 | status_t err; |
| 77 | if ((err = mImpl->getTrackFormat(index, &msg)) != OK) { |
| 78 | return err; |
| 79 | } |
| 80 | |
| 81 | JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| 82 | |
| 83 | return ConvertMessageToMap(env, msg, format); |
| 84 | } |
| 85 | |
| 86 | status_t JMediaExtractor::selectTrack(size_t index) { |
| 87 | return mImpl->selectTrack(index); |
| 88 | } |
| 89 | |
| 90 | status_t JMediaExtractor::seekTo(int64_t timeUs) { |
| 91 | return mImpl->seekTo(timeUs); |
| 92 | } |
| 93 | |
| 94 | status_t JMediaExtractor::advance() { |
| 95 | return mImpl->advance(); |
| 96 | } |
| 97 | |
| 98 | status_t JMediaExtractor::readSampleData( |
| 99 | jobject byteBuf, size_t offset, size_t *sampleSize) { |
| 100 | JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| 101 | |
| 102 | void *dst = env->GetDirectBufferAddress(byteBuf); |
| 103 | |
| 104 | if (dst == NULL) { |
| 105 | // XXX if dst is NULL also fall back to "array()" |
| 106 | return INVALID_OPERATION; |
| 107 | } |
| 108 | |
| 109 | jlong dstSize = env->GetDirectBufferCapacity(byteBuf); |
| 110 | |
| 111 | if (dstSize < offset) { |
| 112 | return -ERANGE; |
| 113 | } |
| 114 | |
| 115 | sp<ABuffer> buffer = new ABuffer((char *)dst + offset, dstSize - offset); |
| 116 | |
| 117 | status_t err = mImpl->readSampleData(buffer); |
| 118 | |
| 119 | if (err != OK) { |
| 120 | return err; |
| 121 | } |
| 122 | |
| 123 | *sampleSize = buffer->size(); |
| 124 | |
| 125 | return OK; |
| 126 | } |
| 127 | |
| 128 | status_t JMediaExtractor::getSampleTrackIndex(size_t *trackIndex) { |
| 129 | return mImpl->getSampleTrackIndex(trackIndex); |
| 130 | } |
| 131 | |
| 132 | status_t JMediaExtractor::getSampleTime(int64_t *sampleTimeUs) { |
| 133 | return mImpl->getSampleTime(sampleTimeUs); |
| 134 | } |
| 135 | |
| 136 | } // namespace android |
| 137 | |
| 138 | //////////////////////////////////////////////////////////////////////////////// |
| 139 | |
| 140 | using namespace android; |
| 141 | |
| 142 | static sp<JMediaExtractor> setMediaExtractor( |
| 143 | JNIEnv *env, jobject thiz, const sp<JMediaExtractor> &extractor) { |
| 144 | sp<JMediaExtractor> old = |
| 145 | (JMediaExtractor *)env->GetIntField(thiz, gFields.context); |
| 146 | |
| 147 | if (extractor != NULL) { |
| 148 | extractor->incStrong(thiz); |
| 149 | } |
| 150 | if (old != NULL) { |
| 151 | old->decStrong(thiz); |
| 152 | } |
| 153 | env->SetIntField(thiz, gFields.context, (int)extractor.get()); |
| 154 | |
| 155 | return old; |
| 156 | } |
| 157 | |
| 158 | static sp<JMediaExtractor> getMediaExtractor(JNIEnv *env, jobject thiz) { |
| 159 | return (JMediaExtractor *)env->GetIntField(thiz, gFields.context); |
| 160 | } |
| 161 | |
| 162 | static void android_media_MediaExtractor_release(JNIEnv *env, jobject thiz) { |
| 163 | setMediaExtractor(env, thiz, NULL); |
| 164 | } |
| 165 | |
| 166 | static jint android_media_MediaExtractor_countTracks( |
| 167 | JNIEnv *env, jobject thiz) { |
| 168 | sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz); |
| 169 | |
| 170 | if (extractor == NULL) { |
| 171 | jniThrowException(env, "java/lang/IllegalStateException", NULL); |
| 172 | return NULL; |
| 173 | } |
| 174 | |
| 175 | return extractor->countTracks(); |
| 176 | } |
| 177 | |
| 178 | static jobject android_media_MediaExtractor_getTrackFormat( |
| 179 | JNIEnv *env, jobject thiz, jint index) { |
| 180 | sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz); |
| 181 | |
| 182 | if (extractor == NULL) { |
| 183 | jniThrowException(env, "java/lang/IllegalStateException", NULL); |
| 184 | return NULL; |
| 185 | } |
| 186 | |
| 187 | jobject format; |
| 188 | status_t err = extractor->getTrackFormat(index, &format); |
| 189 | |
| 190 | if (err != OK) { |
| 191 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 192 | return NULL; |
| 193 | } |
| 194 | |
| 195 | return format; |
| 196 | } |
| 197 | |
| 198 | static void android_media_MediaExtractor_selectTrack( |
| 199 | JNIEnv *env, jobject thiz, jint index) { |
| 200 | sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz); |
| 201 | |
| 202 | if (extractor == NULL) { |
| 203 | jniThrowException(env, "java/lang/IllegalStateException", NULL); |
| 204 | return; |
| 205 | } |
| 206 | |
| 207 | status_t err = extractor->selectTrack(index); |
| 208 | |
| 209 | if (err != OK) { |
| 210 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 211 | return; |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | static void android_media_MediaExtractor_seekTo( |
| 216 | JNIEnv *env, jobject thiz, jlong timeUs) { |
| 217 | sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz); |
| 218 | |
| 219 | if (extractor == NULL) { |
| 220 | jniThrowException(env, "java/lang/IllegalStateException", NULL); |
| 221 | return; |
| 222 | } |
| 223 | |
| 224 | status_t err = extractor->seekTo(timeUs); |
| 225 | |
| 226 | if (err != OK) { |
| 227 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 228 | return; |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | static jboolean android_media_MediaExtractor_advance( |
| 233 | JNIEnv *env, jobject thiz) { |
| 234 | sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz); |
| 235 | |
| 236 | if (extractor == NULL) { |
| 237 | jniThrowException(env, "java/lang/IllegalStateException", NULL); |
| 238 | return false; |
| 239 | } |
| 240 | |
| 241 | status_t err = extractor->advance(); |
| 242 | |
| 243 | if (err == ERROR_END_OF_STREAM) { |
| 244 | return false; |
| 245 | } else if (err != OK) { |
| 246 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 247 | return false; |
| 248 | } |
| 249 | |
| 250 | return true; |
| 251 | } |
| 252 | |
| 253 | static jint android_media_MediaExtractor_readSampleData( |
| 254 | JNIEnv *env, jobject thiz, jobject byteBuf, jint offset) { |
| 255 | sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz); |
| 256 | |
| 257 | if (extractor == NULL) { |
| 258 | jniThrowException(env, "java/lang/IllegalStateException", NULL); |
| 259 | return -1; |
| 260 | } |
| 261 | |
| 262 | size_t sampleSize; |
| 263 | status_t err = extractor->readSampleData(byteBuf, offset, &sampleSize); |
| 264 | |
| 265 | if (err == ERROR_END_OF_STREAM) { |
| 266 | return -1; |
| 267 | } else if (err != OK) { |
| 268 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 269 | return false; |
| 270 | } |
| 271 | |
| 272 | return sampleSize; |
| 273 | } |
| 274 | |
| 275 | static jint android_media_MediaExtractor_getSampleTrackIndex( |
| 276 | JNIEnv *env, jobject thiz) { |
| 277 | sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz); |
| 278 | |
| 279 | if (extractor == NULL) { |
| 280 | jniThrowException(env, "java/lang/IllegalStateException", NULL); |
| 281 | return -1; |
| 282 | } |
| 283 | |
| 284 | size_t trackIndex; |
| 285 | status_t err = extractor->getSampleTrackIndex(&trackIndex); |
| 286 | |
| 287 | if (err == ERROR_END_OF_STREAM) { |
| 288 | return -1; |
| 289 | } else if (err != OK) { |
| 290 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 291 | return false; |
| 292 | } |
| 293 | |
| 294 | return trackIndex; |
| 295 | } |
| 296 | |
| 297 | static jlong android_media_MediaExtractor_getSampleTime( |
| 298 | JNIEnv *env, jobject thiz) { |
| 299 | sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz); |
| 300 | |
| 301 | if (extractor == NULL) { |
| 302 | jniThrowException(env, "java/lang/IllegalStateException", NULL); |
| 303 | return -1ll; |
| 304 | } |
| 305 | |
| 306 | int64_t sampleTimeUs; |
| 307 | status_t err = extractor->getSampleTime(&sampleTimeUs); |
| 308 | |
| 309 | if (err == ERROR_END_OF_STREAM) { |
| 310 | return -1ll; |
| 311 | } else if (err != OK) { |
| 312 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 313 | return false; |
| 314 | } |
| 315 | |
| 316 | return sampleTimeUs; |
| 317 | } |
| 318 | |
| 319 | static void android_media_MediaExtractor_native_init(JNIEnv *env) { |
| 320 | jclass clazz = env->FindClass("android/media/MediaExtractor"); |
| 321 | CHECK(clazz != NULL); |
| 322 | |
| 323 | gFields.context = env->GetFieldID(clazz, "mNativeContext", "I"); |
| 324 | CHECK(gFields.context != NULL); |
| 325 | |
| 326 | DataSource::RegisterDefaultSniffers(); |
| 327 | } |
| 328 | |
| 329 | static void android_media_MediaExtractor_native_setup( |
| 330 | JNIEnv *env, jobject thiz, jstring path) { |
| 331 | sp<JMediaExtractor> extractor = new JMediaExtractor(env, thiz); |
| 332 | |
| 333 | if (path == NULL) { |
| 334 | jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| 335 | return; |
| 336 | } |
| 337 | |
| 338 | const char *tmp = env->GetStringUTFChars(path, NULL); |
| 339 | |
| 340 | if (tmp == NULL) { |
| 341 | return; |
| 342 | } |
| 343 | |
| 344 | status_t err = extractor->setDataSource(tmp); |
| 345 | |
| 346 | env->ReleaseStringUTFChars(path, tmp); |
| 347 | tmp = NULL; |
| 348 | |
| 349 | if (err != OK) { |
| 350 | jniThrowException( |
| 351 | env, |
| 352 | "java/io/IOException", |
| 353 | "Failed to instantiate extractor."); |
| 354 | return; |
| 355 | } |
| 356 | |
| 357 | setMediaExtractor(env,thiz, extractor); |
| 358 | } |
| 359 | |
| 360 | static void android_media_MediaExtractor_native_finalize( |
| 361 | JNIEnv *env, jobject thiz) { |
| 362 | android_media_MediaExtractor_release(env, thiz); |
| 363 | } |
| 364 | |
| 365 | static JNINativeMethod gMethods[] = { |
| 366 | { "release", "()V", (void *)android_media_MediaExtractor_release }, |
| 367 | |
| 368 | { "countTracks", "()I", (void *)android_media_MediaExtractor_countTracks }, |
| 369 | |
| 370 | { "getTrackFormat", "(I)Ljava/util/Map;", |
| 371 | (void *)android_media_MediaExtractor_getTrackFormat }, |
| 372 | |
| 373 | { "selectTrack", "(I)V", (void *)android_media_MediaExtractor_selectTrack }, |
| 374 | |
| 375 | { "seekTo", "(J)V", (void *)android_media_MediaExtractor_seekTo }, |
| 376 | |
| 377 | { "advance", "()Z", (void *)android_media_MediaExtractor_advance }, |
| 378 | |
| 379 | { "readSampleData", "(Ljava/nio/ByteBuffer;I)I", |
| 380 | (void *)android_media_MediaExtractor_readSampleData }, |
| 381 | |
| 382 | { "getSampleTrackIndex", "()I", |
| 383 | (void *)android_media_MediaExtractor_getSampleTrackIndex }, |
| 384 | |
| 385 | { "getSampleTime", "()J", |
| 386 | (void *)android_media_MediaExtractor_getSampleTime }, |
| 387 | |
| 388 | { "native_init", "()V", (void *)android_media_MediaExtractor_native_init }, |
| 389 | |
| 390 | { "native_setup", "(Ljava/lang/String;)V", |
| 391 | (void *)android_media_MediaExtractor_native_setup }, |
| 392 | |
| 393 | { "native_finalize", "()V", |
| 394 | (void *)android_media_MediaExtractor_native_finalize }, |
| 395 | }; |
| 396 | |
| 397 | int register_android_media_MediaExtractor(JNIEnv *env) { |
| 398 | return AndroidRuntime::registerNativeMethods(env, |
| 399 | "android/media/MediaExtractor", gMethods, NELEM(gMethods)); |
| 400 | } |