android_media_MediaMetadataRetriever.cpp revision faf09ba9405ff019b5ca7e2317debe4ff269d4f8
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** Copyright 2008, The Android Open Source Project 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** Licensed under the Apache License, Version 2.0 (the "License"); 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** you may not use this file except in compliance with the License. 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** You may obtain a copy of the License at 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** http://www.apache.org/licenses/LICENSE-2.0 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** Unless required by applicable law or agreed to in writing, software 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** distributed under the License is distributed on an "AS IS" BASIS, 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** See the License for the specific language governing permissions and 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** limitations under the License. 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project*/ 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project//#define LOG_NDEBUG 0 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define LOG_TAG "MediaMetadataRetrieverJNI" 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <assert.h> 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <utils/Log.h> 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <utils/threads.h> 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <core/SkBitmap.h> 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <media/mediametadataretriever.h> 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <private/media/VideoFrame.h> 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include "jni.h" 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include "JNIHelp.h" 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include "android_runtime/AndroidRuntime.h" 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectusing namespace android; 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstruct fields_t { 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jfieldID context; 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jclass bitmapClazz; 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jmethodID bitmapConstructor; 3953ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong jmethodID createBitmapMethod; 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project}; 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic fields_t fields; 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic Mutex sLock; 444935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissenstatic const char* const kClassPathName = "android/media/MediaMetadataRetriever"; 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic void process_media_retriever_call(JNIEnv *env, status_t opStatus, const char* exception, const char *message) 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (opStatus == (status_t) INVALID_OPERATION) { 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jniThrowException(env, "java/lang/IllegalStateException", NULL); 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (opStatus != (status_t) OK) { 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (strlen(message) > 230) { 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If the message is too long, don't bother displaying the status code. 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jniThrowException( env, exception, message); 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project char msg[256]; 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Append the status code to the message. 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sprintf(msg, "%s: status = 0x%X", message, opStatus); 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jniThrowException( env, exception, msg); 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic MediaMetadataRetriever* getRetriever(JNIEnv* env, jobject thiz) 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // No lock is needed, since it is called internally by other methods that are protected 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MediaMetadataRetriever* retriever = (MediaMetadataRetriever*) env->GetIntField(thiz, fields.context); 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return retriever; 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic void setRetriever(JNIEnv* env, jobject thiz, int retriever) 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // No lock is needed, since it is called internally by other methods that are protected 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MediaMetadataRetriever *old = (MediaMetadataRetriever*) env->GetIntField(thiz, fields.context); 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project env->SetIntField(thiz, fields.context, retriever); 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic void android_media_MediaMetadataRetriever_setDataSource(JNIEnv *env, jobject thiz, jstring path) 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGV("setDataSource"); 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MediaMetadataRetriever* retriever = getRetriever(env, thiz); 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (retriever == 0) { 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jniThrowException(env, "java/lang/IllegalStateException", "No retriever available"); 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!path) { 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jniThrowException(env, "java/lang/IllegalArgumentException", "Null pointer"); 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project const char *pathStr = env->GetStringUTFChars(path, NULL); 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!pathStr) { // OutOfMemoryError exception already thrown 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Don't let somebody trick us in to reading some random block of memory 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (strncmp("mem://", pathStr, 6) == 0) { 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid pathname"); 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project process_media_retriever_call(env, retriever->setDataSource(pathStr), "java/lang/RuntimeException", "setDataSource failed"); 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project env->ReleaseStringUTFChars(path, pathStr); 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic void android_media_MediaMetadataRetriever_setDataSourceFD(JNIEnv *env, jobject thiz, jobject fileDescriptor, jlong offset, jlong length) 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGV("setDataSource"); 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MediaMetadataRetriever* retriever = getRetriever(env, thiz); 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (retriever == 0) { 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jniThrowException(env, "java/lang/IllegalStateException", "No retriever available"); 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!fileDescriptor) { 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jniThrowException(env, "java/lang/IllegalArgumentException", NULL); 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int fd = getParcelFileDescriptorFD(env, fileDescriptor); 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (offset < 0 || length < 0 || fd < 0) { 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (offset < 0) { 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGE("negative offset (%lld)", offset); 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (length < 0) { 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGE("negative length (%lld)", length); 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (fd < 0) { 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGE("invalid file descriptor"); 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jniThrowException(env, "java/lang/IllegalArgumentException", NULL); 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project process_media_retriever_call(env, retriever->setDataSource(fd, offset, length), "java/lang/RuntimeException", "setDataSource failed"); 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic void android_media_MediaMetadataRetriever_setMode(JNIEnv *env, jobject thiz, jint mode) 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGV("setMode"); 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MediaMetadataRetriever* retriever = getRetriever(env, thiz); 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (retriever == 0) { 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jniThrowException(env, "java/lang/IllegalStateException", "No retriever available"); 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project process_media_retriever_call(env, retriever->setMode(mode), "java/lang/RuntimeException", "setMode failed"); 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 145faf09ba9405ff019b5ca7e2317debe4ff269d4f8James Dongstatic jobject android_media_MediaMetadataRetriever_getFrameAtTime(JNIEnv *env, jobject thiz, jlong timeUs, jint option) 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 147faf09ba9405ff019b5ca7e2317debe4ff269d4f8James Dong LOGV("getFrameAtTime: %lld us option: %d", timeUs, option); 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MediaMetadataRetriever* retriever = getRetriever(env, thiz); 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (retriever == 0) { 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jniThrowException(env, "java/lang/IllegalStateException", "No retriever available"); 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return NULL; 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Call native method to retrieve a video frame 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project VideoFrame *videoFrame = NULL; 156faf09ba9405ff019b5ca7e2317debe4ff269d4f8James Dong sp<IMemory> frameMemory = retriever->getFrameAtTime(timeUs, option); 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (frameMemory != 0) { // cast the shared structure to a VideoFrame object 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project videoFrame = static_cast<VideoFrame *>(frameMemory->pointer()); 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (videoFrame == NULL) { 161faf09ba9405ff019b5ca7e2317debe4ff269d4f8James Dong LOGE("getFrameAtTime: videoFrame is a NULL pointer"); 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return NULL; 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16553ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong jobject matrix = NULL; 16653ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong if (videoFrame->mRotationAngle != 0) { 16753ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong LOGD("Create a rotation matrix: %d degrees", videoFrame->mRotationAngle); 16853ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong jclass matrixClazz = env->FindClass("android/graphics/Matrix"); 16953ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong if (matrixClazz == NULL) { 17053ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong jniThrowException(env, "java/lang/RuntimeException", 17153ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong "Can't find android/graphics/Matrix"); 17253ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong return NULL; 17353ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong } 17453ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong jmethodID matrixConstructor = 17553ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong env->GetMethodID(matrixClazz, "<init>", "()V"); 17653ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong if (matrixConstructor == NULL) { 17753ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong jniThrowException(env, "java/lang/RuntimeException", 17853ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong "Can't find Matrix constructor"); 17953ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong return NULL; 18053ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong } 18153ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong matrix = 18253ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong env->NewObject(matrixClazz, matrixConstructor); 18353ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong if (matrix == NULL) { 18453ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong LOGE("Could not create a Matrix object"); 18553ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong return NULL; 18653ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong } 18753ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong 18853ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong LOGV("Rotate the matrix: %d degrees", videoFrame->mRotationAngle); 18953ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong jmethodID setRotateMethod = 19053ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong env->GetMethodID(matrixClazz, "setRotate", "(F)V"); 19153ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong if (setRotateMethod == NULL) { 19253ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong jniThrowException(env, "java/lang/RuntimeException", 19353ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong "Can't find Matrix setRotate method"); 19453ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong return NULL; 19553ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong } 19653ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong env->CallVoidMethod(matrix, setRotateMethod, 1.0 * videoFrame->mRotationAngle); 19753ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong env->DeleteLocalRef(matrixClazz); 19853ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong } 19953ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Create a SkBitmap to hold the pixels 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SkBitmap *bitmap = new SkBitmap(); 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bitmap == NULL) { 203faf09ba9405ff019b5ca7e2317debe4ff269d4f8James Dong LOGE("getFrameAtTime: cannot instantiate a SkBitmap object."); 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return NULL; 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bitmap->setConfig(SkBitmap::kRGB_565_Config, videoFrame->mDisplayWidth, videoFrame->mDisplayHeight); 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!bitmap->allocPixels()) { 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delete bitmap; 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGE("failed to allocate pixel buffer"); 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return NULL; 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project memcpy((uint8_t*)bitmap->getPixels(), (uint8_t*)videoFrame + sizeof(VideoFrame), videoFrame->mSize); 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Since internally SkBitmap uses reference count to manage the reference to 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // its pixels, it is important that the pixels (along with SkBitmap) be 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // available after creating the Bitmap is returned to Java app. 21753ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong jobject jSrcBitmap = env->NewObject(fields.bitmapClazz, 21853ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong fields.bitmapConstructor, (int) bitmap, true, NULL, -1); 21953ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong 22053ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong LOGV("Return a new bitmap constructed with the rotation matrix"); 22153ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong return env->CallStaticObjectMethod( 22253ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong fields.bitmapClazz, fields.createBitmapMethod, 22353ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong jSrcBitmap, // source Bitmap 22453ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong 0, // x 22553ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong 0, // y 22653ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong videoFrame->mDisplayWidth, // width 22753ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong videoFrame->mDisplayHeight, // height 22853ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong matrix, // transform matrix 22953ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong false); // filter 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic jbyteArray android_media_MediaMetadataRetriever_extractAlbumArt(JNIEnv *env, jobject thiz) 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGV("extractAlbumArt"); 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MediaMetadataRetriever* retriever = getRetriever(env, thiz); 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (retriever == 0) { 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jniThrowException(env, "java/lang/IllegalStateException", "No retriever available"); 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return NULL; 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MediaAlbumArt* mediaAlbumArt = NULL; 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sp<IMemory> albumArtMemory = retriever->extractAlbumArt(); 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (albumArtMemory != 0) { // cast the shared structure to a MediaAlbumArt object 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mediaAlbumArt = static_cast<MediaAlbumArt *>(albumArtMemory->pointer()); 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mediaAlbumArt == NULL) { 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGE("extractAlbumArt: Call to extractAlbumArt failed."); 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return NULL; 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project unsigned int len = mediaAlbumArt->mSize; 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project char* data = (char*) mediaAlbumArt + sizeof(MediaAlbumArt); 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jbyteArray array = env->NewByteArray(len); 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!array) { // OutOfMemoryError exception has already been thrown. 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGE("extractAlbumArt: OutOfMemoryError is thrown."); 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jbyte* bytes = env->GetByteArrayElements(array, NULL); 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bytes != NULL) { 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project memcpy(bytes, data, len); 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project env->ReleaseByteArrayElements(array, bytes, 0); 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // No need to delete mediaAlbumArt here 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return array; 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic jobject android_media_MediaMetadataRetriever_extractMetadata(JNIEnv *env, jobject thiz, jint keyCode) 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGV("extractMetadata"); 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MediaMetadataRetriever* retriever = getRetriever(env, thiz); 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (retriever == 0) { 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jniThrowException(env, "java/lang/IllegalStateException", "No retriever available"); 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return NULL; 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project const char* value = retriever->extractMetadata(keyCode); 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!value) { 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGV("extractMetadata: Metadata is not found"); 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return NULL; 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGV("extractMetadata: value (%s) for keyCode(%d)", value, keyCode); 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return env->NewStringUTF(value); 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic void android_media_MediaMetadataRetriever_release(JNIEnv *env, jobject thiz) 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGV("release"); 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Mutex::Autolock lock(sLock); 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MediaMetadataRetriever* retriever = getRetriever(env, thiz); 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delete retriever; 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setRetriever(env, thiz, 0); 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic void android_media_MediaMetadataRetriever_native_finalize(JNIEnv *env, jobject thiz) 2949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 2959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGV("native_finalize"); 2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // No lock is needed, since android_media_MediaMetadataRetriever_release() is protected 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project android_media_MediaMetadataRetriever_release(env, thiz); 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3014935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen// This function gets a field ID, which in turn causes class initialization. 3024935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen// It is called from a static block in MediaMetadataRetriever, which won't run until the 3034935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen// first time an instance of this class is used. 3044935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissenstatic void android_media_MediaMetadataRetriever_native_init(JNIEnv *env) 3054935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen{ 3064935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen jclass clazz = env->FindClass(kClassPathName); 3074935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen if (clazz == NULL) { 3084935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen jniThrowException(env, "java/lang/RuntimeException", "Can't find android/media/MediaMetadataRetriever"); 3094935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen return; 3104935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen } 3114935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen 3124935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen fields.context = env->GetFieldID(clazz, "mNativeContext", "I"); 3134935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen if (fields.context == NULL) { 3144935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen jniThrowException(env, "java/lang/RuntimeException", "Can't find MediaMetadataRetriever.mNativeContext"); 3154935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen return; 3164935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen } 3174935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen 3184935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen fields.bitmapClazz = env->FindClass("android/graphics/Bitmap"); 3194935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen if (fields.bitmapClazz == NULL) { 3204935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen jniThrowException(env, "java/lang/RuntimeException", "Can't find android/graphics/Bitmap"); 3214935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen return; 3224935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen } 3234935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen 324a52b4d764ebd79b29eac296a5c3a629cff1990c4Dianne Hackborn fields.bitmapConstructor = env->GetMethodID(fields.bitmapClazz, "<init>", "(IZ[BI)V"); 3254935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen if (fields.bitmapConstructor == NULL) { 3264935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen jniThrowException(env, "java/lang/RuntimeException", "Can't find Bitmap constructor"); 3274935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen return; 3284935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen } 32953ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong fields.createBitmapMethod = 33053ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong env->GetStaticMethodID(fields.bitmapClazz, "createBitmap", 33153ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong "(Landroid/graphics/Bitmap;IIIILandroid/graphics/Matrix;Z)" 33253ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong "Landroid/graphics/Bitmap;"); 33353ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong if (fields.createBitmapMethod == NULL) { 33453ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong jniThrowException(env, "java/lang/RuntimeException", 33553ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong "Can't find Bitmap.createBitmap method"); 33653ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong return; 33753ebc72fd83f83bb5536d5917390aae03b7f5cadJames Dong } 3384935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen} 3394935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic void android_media_MediaMetadataRetriever_native_setup(JNIEnv *env, jobject thiz) 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGV("native_setup"); 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project MediaMetadataRetriever* retriever = new MediaMetadataRetriever(); 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (retriever == 0) { 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project jniThrowException(env, "java/lang/RuntimeException", "Out of memory"); 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setRetriever(env, thiz, (int)retriever); 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project// JNI mapping between Java methods and native methods 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic JNINativeMethod nativeMethods[] = { 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project {"setDataSource", "(Ljava/lang/String;)V", (void *)android_media_MediaMetadataRetriever_setDataSource}, 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project {"setDataSource", "(Ljava/io/FileDescriptor;JJ)V", (void *)android_media_MediaMetadataRetriever_setDataSourceFD}, 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project {"setMode", "(I)V", (void *)android_media_MediaMetadataRetriever_setMode}, 356faf09ba9405ff019b5ca7e2317debe4ff269d4f8James Dong {"_getFrameAtTime", "(JI)Landroid/graphics/Bitmap;", (void *)android_media_MediaMetadataRetriever_getFrameAtTime}, 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project {"extractMetadata", "(I)Ljava/lang/String;", (void *)android_media_MediaMetadataRetriever_extractMetadata}, 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project {"extractAlbumArt", "()[B", (void *)android_media_MediaMetadataRetriever_extractAlbumArt}, 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project {"release", "()V", (void *)android_media_MediaMetadataRetriever_release}, 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project {"native_finalize", "()V", (void *)android_media_MediaMetadataRetriever_native_finalize}, 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project {"native_setup", "()V", (void *)android_media_MediaMetadataRetriever_native_setup}, 3624935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen {"native_init", "()V", (void *)android_media_MediaMetadataRetriever_native_init}, 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project}; 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3654935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen// This function only registers the native methods, and is called from 3664935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen// JNI_OnLoad in android_media_MediaPlayer.cpp 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectint register_android_media_MediaMetadataRetriever(JNIEnv *env) 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return AndroidRuntime::registerNativeMethods 3704935d05eaa306cef88cf0ab13eca386f270409ecMarco Nelissen (env, kClassPathName, nativeMethods, NELEM(nativeMethods)); 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 372