MetadataRetrieverClient.cpp revision afed0e1fa37473a4cd30018577b560acc79d9a3f
1/* 2** 3** Copyright (C) 2008 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 19#define LOG_TAG "MetadataRetrieverClient" 20#include <utils/Log.h> 21 22#include <sys/types.h> 23#include <sys/stat.h> 24#include <dirent.h> 25#include <unistd.h> 26 27#include <string.h> 28#include <cutils/atomic.h> 29#include <cutils/properties.h> 30#include <binder/MemoryBase.h> 31#include <binder/MemoryHeapBase.h> 32#include <android_runtime/ActivityManager.h> 33#include <binder/IPCThreadState.h> 34#include <binder/IServiceManager.h> 35#include <media/MediaMetadataRetrieverInterface.h> 36#include <media/MediaPlayerInterface.h> 37#include <private/media/VideoFrame.h> 38#include "MidiMetadataRetriever.h" 39#include "MetadataRetrieverClient.h" 40#include "StagefrightMetadataRetriever.h" 41 42namespace android { 43 44extern player_type getPlayerType(const char* url); 45extern player_type getPlayerType(int fd, int64_t offset, int64_t length); 46 47MetadataRetrieverClient::MetadataRetrieverClient(pid_t pid) 48{ 49 ALOGV("MetadataRetrieverClient constructor pid(%d)", pid); 50 mPid = pid; 51 mThumbnail = NULL; 52 mAlbumArt = NULL; 53 mRetriever = NULL; 54} 55 56MetadataRetrieverClient::~MetadataRetrieverClient() 57{ 58 ALOGV("MetadataRetrieverClient destructor"); 59 disconnect(); 60} 61 62status_t MetadataRetrieverClient::dump(int fd, const Vector<String16>& args) const 63{ 64 const size_t SIZE = 256; 65 char buffer[SIZE]; 66 String8 result; 67 result.append(" MetadataRetrieverClient\n"); 68 snprintf(buffer, 255, " pid(%d)\n", mPid); 69 result.append(buffer); 70 write(fd, result.string(), result.size()); 71 write(fd, "\n", 1); 72 return NO_ERROR; 73} 74 75void MetadataRetrieverClient::disconnect() 76{ 77 ALOGV("disconnect from pid %d", mPid); 78 Mutex::Autolock lock(mLock); 79 mRetriever.clear(); 80 mThumbnail.clear(); 81 mAlbumArt.clear(); 82 IPCThreadState::self()->flushCommands(); 83} 84 85static sp<MediaMetadataRetrieverBase> createRetriever(player_type playerType) 86{ 87 sp<MediaMetadataRetrieverBase> p; 88 switch (playerType) { 89 case STAGEFRIGHT_PLAYER: 90 case NU_PLAYER: 91 { 92 p = new StagefrightMetadataRetriever; 93 break; 94 } 95 case SONIVOX_PLAYER: 96 ALOGV("create midi metadata retriever"); 97 p = new MidiMetadataRetriever(); 98 break; 99 default: 100 // TODO: 101 // support for TEST_PLAYER 102 ALOGE("player type %d is not supported", playerType); 103 break; 104 } 105 if (p == NULL) { 106 ALOGE("failed to create a retriever object"); 107 } 108 return p; 109} 110 111status_t MetadataRetrieverClient::setDataSource( 112 const char *url, const KeyedVector<String8, String8> *headers) 113{ 114 ALOGV("setDataSource(%s)", url); 115 Mutex::Autolock lock(mLock); 116 if (url == NULL) { 117 return UNKNOWN_ERROR; 118 } 119 player_type playerType = getPlayerType(url); 120 ALOGV("player type = %d", playerType); 121 sp<MediaMetadataRetrieverBase> p = createRetriever(playerType); 122 if (p == NULL) return NO_INIT; 123 status_t ret = p->setDataSource(url, headers); 124 if (ret == NO_ERROR) mRetriever = p; 125 return ret; 126} 127 128status_t MetadataRetrieverClient::setDataSource(int fd, int64_t offset, int64_t length) 129{ 130 ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length); 131 Mutex::Autolock lock(mLock); 132 struct stat sb; 133 int ret = fstat(fd, &sb); 134 if (ret != 0) { 135 ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno)); 136 return BAD_VALUE; 137 } 138 ALOGV("st_dev = %llu", sb.st_dev); 139 ALOGV("st_mode = %u", sb.st_mode); 140 ALOGV("st_uid = %lu", sb.st_uid); 141 ALOGV("st_gid = %lu", sb.st_gid); 142 ALOGV("st_size = %llu", sb.st_size); 143 144 if (offset >= sb.st_size) { 145 ALOGE("offset (%lld) bigger than file size (%llu)", offset, sb.st_size); 146 ::close(fd); 147 return BAD_VALUE; 148 } 149 if (offset + length > sb.st_size) { 150 length = sb.st_size - offset; 151 ALOGV("calculated length = %lld", length); 152 } 153 154 player_type playerType = getPlayerType(fd, offset, length); 155 ALOGV("player type = %d", playerType); 156 sp<MediaMetadataRetrieverBase> p = createRetriever(playerType); 157 if (p == NULL) { 158 ::close(fd); 159 return NO_INIT; 160 } 161 status_t status = p->setDataSource(fd, offset, length); 162 if (status == NO_ERROR) mRetriever = p; 163 ::close(fd); 164 return status; 165} 166 167sp<IMemory> MetadataRetrieverClient::getFrameAtTime(int64_t timeUs, int option) 168{ 169 ALOGV("getFrameAtTime: time(%lld us) option(%d)", timeUs, option); 170 Mutex::Autolock lock(mLock); 171 mThumbnail.clear(); 172 if (mRetriever == NULL) { 173 ALOGE("retriever is not initialized"); 174 return NULL; 175 } 176 VideoFrame *frame = mRetriever->getFrameAtTime(timeUs, option); 177 if (frame == NULL) { 178 ALOGE("failed to capture a video frame"); 179 return NULL; 180 } 181 size_t size = sizeof(VideoFrame) + frame->mSize; 182 sp<MemoryHeapBase> heap = new MemoryHeapBase(size, 0, "MetadataRetrieverClient"); 183 if (heap == NULL) { 184 ALOGE("failed to create MemoryDealer"); 185 delete frame; 186 return NULL; 187 } 188 mThumbnail = new MemoryBase(heap, 0, size); 189 if (mThumbnail == NULL) { 190 ALOGE("not enough memory for VideoFrame size=%u", size); 191 delete frame; 192 return NULL; 193 } 194 VideoFrame *frameCopy = static_cast<VideoFrame *>(mThumbnail->pointer()); 195 frameCopy->mWidth = frame->mWidth; 196 frameCopy->mHeight = frame->mHeight; 197 frameCopy->mDisplayWidth = frame->mDisplayWidth; 198 frameCopy->mDisplayHeight = frame->mDisplayHeight; 199 frameCopy->mSize = frame->mSize; 200 frameCopy->mRotationAngle = frame->mRotationAngle; 201 ALOGV("rotation: %d", frameCopy->mRotationAngle); 202 frameCopy->mData = (uint8_t *)frameCopy + sizeof(VideoFrame); 203 memcpy(frameCopy->mData, frame->mData, frame->mSize); 204 delete frame; // Fix memory leakage 205 return mThumbnail; 206} 207 208sp<IMemory> MetadataRetrieverClient::extractAlbumArt() 209{ 210 ALOGV("extractAlbumArt"); 211 Mutex::Autolock lock(mLock); 212 mAlbumArt.clear(); 213 if (mRetriever == NULL) { 214 ALOGE("retriever is not initialized"); 215 return NULL; 216 } 217 MediaAlbumArt *albumArt = mRetriever->extractAlbumArt(); 218 if (albumArt == NULL) { 219 ALOGE("failed to extract an album art"); 220 return NULL; 221 } 222 size_t size = sizeof(MediaAlbumArt) + albumArt->mSize; 223 sp<MemoryHeapBase> heap = new MemoryHeapBase(size, 0, "MetadataRetrieverClient"); 224 if (heap == NULL) { 225 ALOGE("failed to create MemoryDealer object"); 226 delete albumArt; 227 return NULL; 228 } 229 mAlbumArt = new MemoryBase(heap, 0, size); 230 if (mAlbumArt == NULL) { 231 ALOGE("not enough memory for MediaAlbumArt size=%u", size); 232 delete albumArt; 233 return NULL; 234 } 235 MediaAlbumArt *albumArtCopy = static_cast<MediaAlbumArt *>(mAlbumArt->pointer()); 236 albumArtCopy->mSize = albumArt->mSize; 237 albumArtCopy->mData = (uint8_t *)albumArtCopy + sizeof(MediaAlbumArt); 238 memcpy(albumArtCopy->mData, albumArt->mData, albumArt->mSize); 239 delete albumArt; // Fix memory leakage 240 return mAlbumArt; 241} 242 243const char* MetadataRetrieverClient::extractMetadata(int keyCode) 244{ 245 ALOGV("extractMetadata"); 246 Mutex::Autolock lock(mLock); 247 if (mRetriever == NULL) { 248 ALOGE("retriever is not initialized"); 249 return NULL; 250 } 251 return mRetriever->extractMetadata(keyCode); 252} 253 254}; // namespace android 255