Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 1 | /* |
| 2 | ** |
| 3 | ** Copyright 2013, The Android Open Source Project |
| 4 | ** |
| 5 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | ** you may not use this file except in compliance with the License. |
| 7 | ** You may obtain a copy of the License at |
| 8 | ** |
| 9 | ** http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | ** |
| 11 | ** Unless required by applicable law or agreed to in writing, software |
| 12 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | ** See the License for the specific language governing permissions and |
| 15 | ** limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | // #define LOG_NDEBUG 0 |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 19 | // #define LOG_NNDEBUG 0 |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 20 | #define LOG_TAG "CameraMetadata-JNI" |
| 21 | #include <utils/Log.h> |
Ruben Brunk | 85c4388 | 2014-02-21 17:40:51 -0800 | [diff] [blame] | 22 | #include <utils/RefBase.h> |
| 23 | #include <string.h> |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 24 | |
| 25 | #include "jni.h" |
| 26 | #include "JNIHelp.h" |
| 27 | #include "android_os_Parcel.h" |
| 28 | #include "android_runtime/AndroidRuntime.h" |
| 29 | |
Ruben Brunk | 85c4388 | 2014-02-21 17:40:51 -0800 | [diff] [blame] | 30 | #include <binder/IServiceManager.h> |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 31 | #include <camera/CameraMetadata.h> |
Ruben Brunk | 85c4388 | 2014-02-21 17:40:51 -0800 | [diff] [blame] | 32 | #include <camera/ICameraService.h> |
| 33 | #include <camera/VendorTagDescriptor.h> |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 34 | #include <nativehelper/ScopedUtfChars.h> |
| 35 | #include <nativehelper/ScopedPrimitiveArray.h> |
| 36 | |
| 37 | #if defined(LOG_NNDEBUG) |
| 38 | #if !LOG_NNDEBUG |
| 39 | #define ALOGVV ALOGV |
| 40 | #endif |
| 41 | #else |
| 42 | #define ALOGVV(...) |
| 43 | #endif |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 44 | |
| 45 | // fully-qualified class name |
Eino-Ville Talvala | 70c2207 | 2013-08-27 12:09:04 -0700 | [diff] [blame] | 46 | #define CAMERA_METADATA_CLASS_NAME "android/hardware/camera2/impl/CameraMetadataNative" |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 47 | |
| 48 | using namespace android; |
| 49 | |
| 50 | struct fields_t { |
| 51 | jfieldID metadata_ptr; |
| 52 | }; |
| 53 | |
| 54 | static fields_t fields; |
| 55 | |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 56 | namespace { |
| 57 | struct Helpers { |
| 58 | static size_t getTypeSize(uint8_t type) { |
| 59 | if (type >= NUM_TYPES) { |
| 60 | ALOGE("%s: Invalid type specified (%ud)", __FUNCTION__, type); |
| 61 | return static_cast<size_t>(-1); |
| 62 | } |
| 63 | |
| 64 | return camera_metadata_type_size[type]; |
| 65 | } |
| 66 | |
| 67 | static status_t updateAny(CameraMetadata *metadata, |
| 68 | uint32_t tag, |
| 69 | uint32_t type, |
| 70 | const void *data, |
| 71 | size_t dataBytes) { |
| 72 | |
| 73 | if (type >= NUM_TYPES) { |
| 74 | ALOGE("%s: Invalid type specified (%ud)", __FUNCTION__, type); |
| 75 | return INVALID_OPERATION; |
| 76 | } |
| 77 | |
| 78 | size_t typeSize = getTypeSize(type); |
| 79 | |
| 80 | if (dataBytes % typeSize != 0) { |
| 81 | ALOGE("%s: Expected dataBytes (%ud) to be divisible by typeSize " |
| 82 | "(%ud)", __FUNCTION__, dataBytes, typeSize); |
| 83 | return BAD_VALUE; |
| 84 | } |
| 85 | |
| 86 | size_t dataCount = dataBytes / typeSize; |
| 87 | |
| 88 | switch(type) { |
| 89 | #define METADATA_UPDATE(runtime_type, compile_type) \ |
| 90 | case runtime_type: { \ |
| 91 | const compile_type *dataPtr = \ |
| 92 | static_cast<const compile_type*>(data); \ |
| 93 | return metadata->update(tag, dataPtr, dataCount); \ |
| 94 | } \ |
| 95 | |
| 96 | METADATA_UPDATE(TYPE_BYTE, uint8_t); |
| 97 | METADATA_UPDATE(TYPE_INT32, int32_t); |
| 98 | METADATA_UPDATE(TYPE_FLOAT, float); |
| 99 | METADATA_UPDATE(TYPE_INT64, int64_t); |
| 100 | METADATA_UPDATE(TYPE_DOUBLE, double); |
| 101 | METADATA_UPDATE(TYPE_RATIONAL, camera_metadata_rational_t); |
| 102 | |
| 103 | default: { |
| 104 | // unreachable |
| 105 | ALOGE("%s: Unreachable", __FUNCTION__); |
| 106 | return INVALID_OPERATION; |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | #undef METADATA_UPDATE |
| 111 | } |
| 112 | }; |
| 113 | } // namespace {} |
| 114 | |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 115 | extern "C" { |
| 116 | |
| 117 | static void CameraMetadata_classInit(JNIEnv *env, jobject thiz); |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 118 | static jint CameraMetadata_getTagFromKey(JNIEnv *env, jobject thiz, jstring keyName); |
| 119 | static jint CameraMetadata_getTypeFromTag(JNIEnv *env, jobject thiz, jint tag); |
Ruben Brunk | 85c4388 | 2014-02-21 17:40:51 -0800 | [diff] [blame] | 120 | static jint CameraMetadata_setupGlobalVendorTagDescriptor(JNIEnv *env, jobject thiz); |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 121 | |
| 122 | // Less safe access to native pointer. Does NOT throw any Java exceptions if NULL. |
| 123 | static CameraMetadata* CameraMetadata_getPointerNoThrow(JNIEnv *env, jobject thiz) { |
| 124 | |
| 125 | if (thiz == NULL) { |
| 126 | return NULL; |
| 127 | } |
| 128 | |
| 129 | return reinterpret_cast<CameraMetadata*>(env->GetLongField(thiz, fields.metadata_ptr)); |
| 130 | } |
| 131 | |
| 132 | // Safe access to native pointer from object. Throws if not possible to access. |
| 133 | static CameraMetadata* CameraMetadata_getPointerThrow(JNIEnv *env, jobject thiz, |
| 134 | const char* argName = "this") { |
| 135 | |
| 136 | if (thiz == NULL) { |
| 137 | ALOGV("%s: Throwing java.lang.NullPointerException for null reference", |
| 138 | __FUNCTION__); |
| 139 | jniThrowNullPointerException(env, argName); |
| 140 | return NULL; |
| 141 | } |
| 142 | |
| 143 | CameraMetadata* metadata = CameraMetadata_getPointerNoThrow(env, thiz); |
| 144 | if (metadata == NULL) { |
| 145 | ALOGV("%s: Throwing java.lang.IllegalStateException for closed object", |
| 146 | __FUNCTION__); |
| 147 | jniThrowException(env, "java/lang/IllegalStateException", |
| 148 | "Metadata object was already closed"); |
| 149 | return NULL; |
| 150 | } |
| 151 | |
| 152 | return metadata; |
| 153 | } |
| 154 | |
| 155 | static jlong CameraMetadata_allocate(JNIEnv *env, jobject thiz) { |
| 156 | ALOGV("%s", __FUNCTION__); |
| 157 | |
| 158 | return reinterpret_cast<jlong>(new CameraMetadata()); |
| 159 | } |
| 160 | |
Eino-Ville Talvala | 70c2207 | 2013-08-27 12:09:04 -0700 | [diff] [blame] | 161 | static jlong CameraMetadata_allocateCopy(JNIEnv *env, jobject thiz, |
| 162 | jobject other) { |
| 163 | ALOGV("%s", __FUNCTION__); |
| 164 | |
| 165 | CameraMetadata* otherMetadata = |
| 166 | CameraMetadata_getPointerThrow(env, other, "other"); |
| 167 | |
| 168 | // In case of exception, return |
| 169 | if (otherMetadata == NULL) return NULL; |
| 170 | |
| 171 | // Clone native metadata and return new pointer |
| 172 | return reinterpret_cast<jlong>(new CameraMetadata(*otherMetadata)); |
| 173 | } |
| 174 | |
| 175 | |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 176 | static jboolean CameraMetadata_isEmpty(JNIEnv *env, jobject thiz) { |
| 177 | ALOGV("%s", __FUNCTION__); |
| 178 | |
| 179 | CameraMetadata* metadata = CameraMetadata_getPointerThrow(env, thiz); |
| 180 | |
| 181 | if (metadata == NULL) { |
| 182 | ALOGW("%s: Returning early due to exception being thrown", |
| 183 | __FUNCTION__); |
| 184 | return JNI_TRUE; // actually throws java exc. |
| 185 | } |
| 186 | |
| 187 | jboolean empty = metadata->isEmpty(); |
| 188 | |
| 189 | ALOGV("%s: Empty returned %d, entry count was %d", |
| 190 | __FUNCTION__, empty, metadata->entryCount()); |
| 191 | |
| 192 | return empty; |
| 193 | } |
| 194 | |
| 195 | static jint CameraMetadata_getEntryCount(JNIEnv *env, jobject thiz) { |
| 196 | ALOGV("%s", __FUNCTION__); |
| 197 | |
| 198 | CameraMetadata* metadata = CameraMetadata_getPointerThrow(env, thiz); |
| 199 | |
| 200 | if (metadata == NULL) return 0; // actually throws java exc. |
| 201 | |
| 202 | return metadata->entryCount(); |
| 203 | } |
| 204 | |
| 205 | // idempotent. calling more than once has no effect. |
| 206 | static void CameraMetadata_close(JNIEnv *env, jobject thiz) { |
| 207 | ALOGV("%s", __FUNCTION__); |
| 208 | |
| 209 | CameraMetadata* metadata = CameraMetadata_getPointerNoThrow(env, thiz); |
| 210 | |
| 211 | if (metadata != NULL) { |
| 212 | delete metadata; |
| 213 | env->SetLongField(thiz, fields.metadata_ptr, 0); |
| 214 | } |
| 215 | |
| 216 | LOG_ALWAYS_FATAL_IF(CameraMetadata_getPointerNoThrow(env, thiz) != NULL, |
| 217 | "Expected the native ptr to be 0 after #close"); |
| 218 | } |
| 219 | |
| 220 | static void CameraMetadata_swap(JNIEnv *env, jobject thiz, jobject other) { |
| 221 | ALOGV("%s", __FUNCTION__); |
| 222 | |
| 223 | CameraMetadata* metadata = CameraMetadata_getPointerThrow(env, thiz); |
| 224 | |
| 225 | // order is important: we can't call another JNI method |
| 226 | // if there is an exception pending |
| 227 | if (metadata == NULL) return; |
| 228 | |
| 229 | CameraMetadata* otherMetadata = CameraMetadata_getPointerThrow(env, other, "other"); |
| 230 | |
| 231 | if (otherMetadata == NULL) return; |
| 232 | |
| 233 | metadata->swap(*otherMetadata); |
| 234 | } |
| 235 | |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 236 | static jbyteArray CameraMetadata_readValues(JNIEnv *env, jobject thiz, jint tag) { |
| 237 | ALOGV("%s (tag = %d)", __FUNCTION__, tag); |
| 238 | |
| 239 | CameraMetadata* metadata = CameraMetadata_getPointerThrow(env, thiz); |
| 240 | if (metadata == NULL) return NULL; |
| 241 | |
| 242 | int tagType = get_camera_metadata_tag_type(tag); |
| 243 | if (tagType == -1) { |
| 244 | jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", |
| 245 | "Tag (%d) did not have a type", tag); |
| 246 | return NULL; |
| 247 | } |
| 248 | size_t tagSize = Helpers::getTypeSize(tagType); |
| 249 | |
| 250 | camera_metadata_entry entry = metadata->find(tag); |
| 251 | if (entry.count == 0) { |
| 252 | if (!metadata->exists(tag)) { |
| 253 | ALOGV("%s: Tag %d does not have any entries", __FUNCTION__, tag); |
| 254 | return NULL; |
| 255 | } else { |
| 256 | // OK: we will return a 0-sized array. |
| 257 | ALOGV("%s: Tag %d had an entry, but it had 0 data", __FUNCTION__, |
| 258 | tag); |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | jsize byteCount = entry.count * tagSize; |
| 263 | jbyteArray byteArray = env->NewByteArray(byteCount); |
| 264 | if (env->ExceptionCheck()) return NULL; |
| 265 | |
| 266 | // Copy into java array from native array |
| 267 | ScopedByteArrayRW arrayWriter(env, byteArray); |
| 268 | memcpy(arrayWriter.get(), entry.data.u8, byteCount); |
| 269 | |
| 270 | return byteArray; |
| 271 | } |
| 272 | |
| 273 | static void CameraMetadata_writeValues(JNIEnv *env, jobject thiz, jint tag, jbyteArray src) { |
| 274 | ALOGV("%s (tag = %d)", __FUNCTION__, tag); |
| 275 | |
| 276 | CameraMetadata* metadata = CameraMetadata_getPointerThrow(env, thiz); |
| 277 | if (metadata == NULL) return; |
| 278 | |
| 279 | int tagType = get_camera_metadata_tag_type(tag); |
| 280 | if (tagType == -1) { |
| 281 | jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", |
| 282 | "Tag (%d) did not have a type", tag); |
| 283 | return; |
| 284 | } |
| 285 | size_t tagSize = Helpers::getTypeSize(tagType); |
| 286 | |
| 287 | status_t res; |
| 288 | |
| 289 | if (src == NULL) { |
| 290 | // If array is NULL, delete the entry |
Igor Murashkin | 3710db8 | 2013-07-18 20:11:17 -0700 | [diff] [blame] | 291 | if (metadata->exists(tag)) { |
| 292 | res = metadata->erase(tag); |
| 293 | ALOGV("%s: Erase values (res = %d)", __FUNCTION__, res); |
| 294 | } else { |
| 295 | res = OK; |
| 296 | ALOGV("%s: Don't need to erase", __FUNCTION__); |
| 297 | } |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 298 | } else { |
| 299 | // Copy from java array into native array |
| 300 | ScopedByteArrayRO arrayReader(env, src); |
| 301 | if (arrayReader.get() == NULL) return; |
| 302 | |
| 303 | res = Helpers::updateAny(metadata, static_cast<uint32_t>(tag), |
| 304 | tagType, arrayReader.get(), arrayReader.size()); |
Igor Murashkin | 3710db8 | 2013-07-18 20:11:17 -0700 | [diff] [blame] | 305 | |
| 306 | ALOGV("%s: Update values (res = %d)", __FUNCTION__, res); |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 307 | } |
| 308 | |
| 309 | if (res == OK) { |
| 310 | return; |
| 311 | } else if (res == BAD_VALUE) { |
| 312 | jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", |
| 313 | "Src byte array was poorly formed"); |
| 314 | } else if (res == INVALID_OPERATION) { |
| 315 | jniThrowExceptionFmt(env, "java/lang/IllegalStateException", |
| 316 | "Internal error while trying to update metadata"); |
| 317 | } else { |
| 318 | jniThrowExceptionFmt(env, "java/lang/IllegalStateException", |
| 319 | "Unknown error (%d) while trying to update " |
| 320 | "metadata", res); |
| 321 | } |
| 322 | } |
| 323 | |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 324 | static void CameraMetadata_readFromParcel(JNIEnv *env, jobject thiz, jobject parcel) { |
| 325 | ALOGV("%s", __FUNCTION__); |
| 326 | CameraMetadata* metadata = CameraMetadata_getPointerThrow(env, thiz); |
| 327 | if (metadata == NULL) { |
| 328 | return; |
| 329 | } |
| 330 | |
| 331 | Parcel* parcelNative = parcelForJavaObject(env, parcel); |
| 332 | if (parcelNative == NULL) { |
| 333 | jniThrowNullPointerException(env, "parcel"); |
| 334 | return; |
| 335 | } |
| 336 | |
| 337 | status_t err; |
| 338 | if ((err = metadata->readFromParcel(parcelNative)) != OK) { |
| 339 | jniThrowExceptionFmt(env, "java/lang/IllegalStateException", |
| 340 | "Failed to read from parcel (error code %d)", err); |
| 341 | return; |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | static void CameraMetadata_writeToParcel(JNIEnv *env, jobject thiz, jobject parcel) { |
| 346 | ALOGV("%s", __FUNCTION__); |
| 347 | CameraMetadata* metadata = CameraMetadata_getPointerThrow(env, thiz); |
| 348 | if (metadata == NULL) { |
| 349 | return; |
| 350 | } |
| 351 | |
| 352 | Parcel* parcelNative = parcelForJavaObject(env, parcel); |
| 353 | if (parcelNative == NULL) { |
| 354 | jniThrowNullPointerException(env, "parcel"); |
| 355 | return; |
| 356 | } |
| 357 | |
| 358 | status_t err; |
| 359 | if ((err = metadata->writeToParcel(parcelNative)) != OK) { |
| 360 | jniThrowExceptionFmt(env, "java/lang/IllegalStateException", |
| 361 | "Failed to write to parcel (error code %d)", err); |
| 362 | return; |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | } // extern "C" |
| 367 | |
| 368 | //------------------------------------------------- |
| 369 | |
| 370 | static JNINativeMethod gCameraMetadataMethods[] = { |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 371 | // static methods |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 372 | { "nativeClassInit", |
| 373 | "()V", |
| 374 | (void *)CameraMetadata_classInit }, |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 375 | { "nativeGetTagFromKey", |
| 376 | "(Ljava/lang/String;)I", |
| 377 | (void *)CameraMetadata_getTagFromKey }, |
| 378 | { "nativeGetTypeFromTag", |
| 379 | "(I)I", |
| 380 | (void *)CameraMetadata_getTypeFromTag }, |
Ruben Brunk | 85c4388 | 2014-02-21 17:40:51 -0800 | [diff] [blame] | 381 | { "nativeSetupGlobalVendorTagDescriptor", |
| 382 | "()I", |
| 383 | (void*)CameraMetadata_setupGlobalVendorTagDescriptor }, |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 384 | // instance methods |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 385 | { "nativeAllocate", |
| 386 | "()J", |
| 387 | (void*)CameraMetadata_allocate }, |
Eino-Ville Talvala | 70c2207 | 2013-08-27 12:09:04 -0700 | [diff] [blame] | 388 | { "nativeAllocateCopy", |
| 389 | "(L" CAMERA_METADATA_CLASS_NAME ";)J", |
| 390 | (void *)CameraMetadata_allocateCopy }, |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 391 | { "nativeIsEmpty", |
| 392 | "()Z", |
| 393 | (void*)CameraMetadata_isEmpty }, |
| 394 | { "nativeGetEntryCount", |
| 395 | "()I", |
| 396 | (void*)CameraMetadata_getEntryCount }, |
| 397 | { "nativeClose", |
| 398 | "()V", |
| 399 | (void*)CameraMetadata_close }, |
| 400 | { "nativeSwap", |
| 401 | "(L" CAMERA_METADATA_CLASS_NAME ";)V", |
| 402 | (void *)CameraMetadata_swap }, |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 403 | { "nativeReadValues", |
| 404 | "(I)[B", |
| 405 | (void *)CameraMetadata_readValues }, |
| 406 | { "nativeWriteValues", |
| 407 | "(I[B)V", |
| 408 | (void *)CameraMetadata_writeValues }, |
| 409 | // Parcelable interface |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 410 | { "nativeReadFromParcel", |
| 411 | "(Landroid/os/Parcel;)V", |
| 412 | (void *)CameraMetadata_readFromParcel }, |
| 413 | { "nativeWriteToParcel", |
| 414 | "(Landroid/os/Parcel;)V", |
| 415 | (void *)CameraMetadata_writeToParcel }, |
| 416 | }; |
| 417 | |
| 418 | struct field { |
| 419 | const char *class_name; |
| 420 | const char *field_name; |
| 421 | const char *field_type; |
| 422 | jfieldID *jfield; |
| 423 | }; |
| 424 | |
| 425 | static int find_fields(JNIEnv *env, field *fields, int count) |
| 426 | { |
| 427 | for (int i = 0; i < count; i++) { |
| 428 | field *f = &fields[i]; |
| 429 | jclass clazz = env->FindClass(f->class_name); |
| 430 | if (clazz == NULL) { |
| 431 | ALOGE("Can't find %s", f->class_name); |
| 432 | return -1; |
| 433 | } |
| 434 | |
| 435 | jfieldID field = env->GetFieldID(clazz, f->field_name, f->field_type); |
| 436 | if (field == NULL) { |
| 437 | ALOGE("Can't find %s.%s", f->class_name, f->field_name); |
| 438 | return -1; |
| 439 | } |
| 440 | |
| 441 | *(f->jfield) = field; |
| 442 | } |
| 443 | |
| 444 | return 0; |
| 445 | } |
| 446 | |
| 447 | // Get all the required offsets in java class and register native functions |
Eino-Ville Talvala | 2f1a2e4 | 2013-07-25 17:12:05 -0700 | [diff] [blame] | 448 | int register_android_hardware_camera2_CameraMetadata(JNIEnv *env) |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 449 | { |
| 450 | // Register native functions |
| 451 | return AndroidRuntime::registerNativeMethods(env, |
| 452 | CAMERA_METADATA_CLASS_NAME, |
| 453 | gCameraMetadataMethods, |
| 454 | NELEM(gCameraMetadataMethods)); |
| 455 | } |
| 456 | |
| 457 | extern "C" { |
| 458 | static void CameraMetadata_classInit(JNIEnv *env, jobject thiz) { |
| 459 | // XX: Why do this separately instead of doing it in the register function? |
| 460 | ALOGV("%s", __FUNCTION__); |
| 461 | |
| 462 | field fields_to_find[] = { |
| 463 | { CAMERA_METADATA_CLASS_NAME, "mMetadataPtr", "J", &fields.metadata_ptr }, |
| 464 | }; |
| 465 | |
| 466 | // Do this here instead of in register_native_methods, |
| 467 | // since otherwise it will fail to find the fields. |
| 468 | if (find_fields(env, fields_to_find, NELEM(fields_to_find)) < 0) |
| 469 | return; |
| 470 | |
| 471 | jclass clazz = env->FindClass(CAMERA_METADATA_CLASS_NAME); |
| 472 | } |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 473 | |
| 474 | static jint CameraMetadata_getTagFromKey(JNIEnv *env, jobject thiz, jstring keyName) { |
| 475 | |
| 476 | ScopedUtfChars keyScoped(env, keyName); |
| 477 | const char *key = keyScoped.c_str(); |
| 478 | if (key == NULL) { |
| 479 | // exception thrown by ScopedUtfChars |
| 480 | return 0; |
| 481 | } |
| 482 | size_t keyLength = strlen(key); |
| 483 | |
| 484 | ALOGV("%s (key = '%s')", __FUNCTION__, key); |
| 485 | |
| 486 | // First, find the section by the longest string match |
| 487 | const char *section = NULL; |
| 488 | size_t sectionIndex = 0; |
| 489 | size_t sectionLength = 0; |
Ruben Brunk | 31efe22 | 2014-05-03 00:28:49 +0000 | [diff] [blame] | 490 | for (size_t i = 0; i < ANDROID_SECTION_COUNT; ++i) { |
| 491 | const char *str = camera_metadata_section_names[i]; |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 492 | ALOGVV("%s: Trying to match against section '%s'", |
| 493 | __FUNCTION__, str); |
| 494 | if (strstr(key, str) == key) { // key begins with the section name |
| 495 | size_t strLength = strlen(str); |
| 496 | |
| 497 | ALOGVV("%s: Key begins with section name", __FUNCTION__); |
| 498 | |
| 499 | // section name is the longest we've found so far |
| 500 | if (section == NULL || sectionLength < strLength) { |
| 501 | section = str; |
| 502 | sectionIndex = i; |
| 503 | sectionLength = strLength; |
| 504 | |
Ruben Brunk | 31efe22 | 2014-05-03 00:28:49 +0000 | [diff] [blame] | 505 | ALOGVV("%s: Found new best section (idx %d)", __FUNCTION__, sectionIndex); |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 506 | } |
| 507 | } |
| 508 | } |
| 509 | |
Ruben Brunk | 31efe22 | 2014-05-03 00:28:49 +0000 | [diff] [blame] | 510 | // TODO: vendor ext |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 511 | // TODO: Make above get_camera_metadata_section_from_name ? |
| 512 | |
| 513 | if (section == NULL) { |
| 514 | jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", |
| 515 | "Could not find section name for key '%s')", key); |
| 516 | return 0; |
| 517 | } else { |
| 518 | ALOGV("%s: Found matched section '%s' (%d)", |
| 519 | __FUNCTION__, section, sectionIndex); |
| 520 | } |
| 521 | |
| 522 | // Get the tag name component of the key |
| 523 | const char *keyTagName = key + sectionLength + 1; // x.y.z -> z |
| 524 | if (sectionLength + 1 >= keyLength) { |
| 525 | jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", |
| 526 | "Key length too short for key '%s')", key); |
| 527 | } |
| 528 | |
| 529 | // Match rest of name against the tag names in that section only |
Ruben Brunk | 31efe22 | 2014-05-03 00:28:49 +0000 | [diff] [blame] | 530 | uint32_t tagBegin, tagEnd; // [tagBegin, tagEnd) |
| 531 | tagBegin = camera_metadata_section_bounds[sectionIndex][0]; |
| 532 | tagEnd = camera_metadata_section_bounds[sectionIndex][1]; |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 533 | |
Ruben Brunk | 31efe22 | 2014-05-03 00:28:49 +0000 | [diff] [blame] | 534 | uint32_t tag; |
| 535 | for (tag = tagBegin; tag < tagEnd; ++tag) { |
| 536 | const char *tagName = get_camera_metadata_tag_name(tag); |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 537 | |
Ruben Brunk | 31efe22 | 2014-05-03 00:28:49 +0000 | [diff] [blame] | 538 | if (strcmp(keyTagName, tagName) == 0) { |
| 539 | ALOGV("%s: Found matched tag '%s' (%d)", |
| 540 | __FUNCTION__, tagName, tag); |
| 541 | break; |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 542 | } |
| 543 | } |
| 544 | |
Ruben Brunk | 31efe22 | 2014-05-03 00:28:49 +0000 | [diff] [blame] | 545 | // TODO: vendor ext |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 546 | // TODO: Make above get_camera_metadata_tag_from_name ? |
| 547 | |
Ruben Brunk | 31efe22 | 2014-05-03 00:28:49 +0000 | [diff] [blame] | 548 | if (tag == tagEnd) { |
| 549 | jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", |
| 550 | "Could not find tag name for key '%s')", key); |
| 551 | return 0; |
| 552 | } |
| 553 | |
Igor Murashkin | b519cc5 | 2013-07-02 11:23:44 -0700 | [diff] [blame] | 554 | return tag; |
| 555 | } |
| 556 | |
| 557 | static jint CameraMetadata_getTypeFromTag(JNIEnv *env, jobject thiz, jint tag) { |
| 558 | int tagType = get_camera_metadata_tag_type(tag); |
| 559 | if (tagType == -1) { |
| 560 | jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", |
| 561 | "Tag (%d) did not have a type", tag); |
| 562 | return -1; |
| 563 | } |
| 564 | |
| 565 | return tagType; |
| 566 | } |
| 567 | |
Ruben Brunk | 85c4388 | 2014-02-21 17:40:51 -0800 | [diff] [blame] | 568 | static jint CameraMetadata_setupGlobalVendorTagDescriptor(JNIEnv *env, jobject thiz) { |
| 569 | const String16 NAME("media.camera"); |
| 570 | sp<ICameraService> cameraService; |
| 571 | status_t err = getService(NAME, /*out*/&cameraService); |
| 572 | |
| 573 | if (err != OK) { |
| 574 | ALOGE("%s: Failed to get camera service, received error %s (%d)", __FUNCTION__, |
| 575 | strerror(-err), err); |
| 576 | return err; |
| 577 | } |
| 578 | |
| 579 | sp<VendorTagDescriptor> desc; |
| 580 | err = cameraService->getCameraVendorTagDescriptor(/*out*/desc); |
| 581 | |
Igor Murashkin | 5614cbe | 2014-03-17 14:00:55 -0700 | [diff] [blame] | 582 | if (err == -EOPNOTSUPP) { |
| 583 | ALOGW("%s: Camera HAL too old; does not support vendor tags", __FUNCTION__); |
| 584 | VendorTagDescriptor::clearGlobalVendorTagDescriptor(); |
| 585 | |
| 586 | return OK; |
| 587 | } else if (err != OK) { |
| 588 | ALOGE("%s: Failed to setup vendor tag descriptors, received error %s (%d)", |
| 589 | __FUNCTION__, strerror(-err), err); |
Ruben Brunk | 85c4388 | 2014-02-21 17:40:51 -0800 | [diff] [blame] | 590 | return err; |
| 591 | } |
| 592 | |
| 593 | err = VendorTagDescriptor::setAsGlobalVendorTagDescriptor(desc); |
| 594 | |
| 595 | return err; |
| 596 | } |
| 597 | |
Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame] | 598 | } // extern "C" |