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 <binder/IPCThreadState.h> 33 #include <binder/IServiceManager.h> 34 #include <media/MediaMetadataRetrieverInterface.h> 35 #include <media/MediaPlayerInterface.h> 36 #include <private/media/VideoFrame.h> 37 #include "MidiMetadataRetriever.h" 38 #include "MetadataRetrieverClient.h" 39 #include "StagefrightMetadataRetriever.h" 40 #include "MediaPlayerFactory.h" 41 42 namespace android { 43 44 MetadataRetrieverClient::MetadataRetrieverClient(pid_t pid) 45 { 46 ALOGV("MetadataRetrieverClient constructor pid(%d)", pid); 47 mPid = pid; 48 mThumbnail = NULL; 49 mAlbumArt = NULL; 50 mRetriever = NULL; 51 } 52 53 MetadataRetrieverClient::~MetadataRetrieverClient() 54 { 55 ALOGV("MetadataRetrieverClient destructor"); 56 disconnect(); 57 } 58 59 status_t MetadataRetrieverClient::dump(int fd, const Vector<String16>& args) const 60 { 61 const size_t SIZE = 256; 62 char buffer[SIZE]; 63 String8 result; 64 result.append(" MetadataRetrieverClient\n"); 65 snprintf(buffer, 255, " pid(%d)\n", mPid); 66 result.append(buffer); 67 write(fd, result.string(), result.size()); 68 write(fd, "\n", 1); 69 return NO_ERROR; 70 } 71 72 void MetadataRetrieverClient::disconnect() 73 { 74 ALOGV("disconnect from pid %d", mPid); 75 Mutex::Autolock lock(mLock); 76 mRetriever.clear(); 77 mThumbnail.clear(); 78 mAlbumArt.clear(); 79 IPCThreadState::self()->flushCommands(); 80 } 81 82 static sp<MediaMetadataRetrieverBase> createRetriever(player_type playerType) 83 { 84 sp<MediaMetadataRetrieverBase> p; 85 switch (playerType) { 86 case STAGEFRIGHT_PLAYER: 87 case NU_PLAYER: 88 { 89 p = new StagefrightMetadataRetriever; 90 break; 91 } 92 case SONIVOX_PLAYER: 93 ALOGV("create midi metadata retriever"); 94 p = new MidiMetadataRetriever(); 95 break; 96 default: 97 // TODO: 98 // support for TEST_PLAYER 99 ALOGE("player type %d is not supported", playerType); 100 break; 101 } 102 if (p == NULL) { 103 ALOGE("failed to create a retriever object"); 104 } 105 return p; 106 } 107 108 status_t MetadataRetrieverClient::setDataSource( 109 const char *url, const KeyedVector<String8, String8> *headers) 110 { 111 ALOGV("setDataSource(%s)", url); 112 Mutex::Autolock lock(mLock); 113 if (url == NULL) { 114 return UNKNOWN_ERROR; 115 } 116 117 // When asking the MediaPlayerFactory subsystem to choose a media player for 118 // a given URL, a pointer to an outer IMediaPlayer can be passed to the 119 // factory system to be taken into consideration along with the URL. In the 120 // case of choosing an instance of a MediaPlayerBase for a 121 // MetadataRetrieverClient, there is no outer IMediaPlayer which will 122 // eventually encapsulate the result of this selection. In this case, just 123 // pass NULL to getPlayerType to indicate that there is no outer 124 // IMediaPlayer to consider during selection. 125 player_type playerType = 126 MediaPlayerFactory::getPlayerType(NULL /* client */, url); 127 ALOGV("player type = %d", playerType); 128 sp<MediaMetadataRetrieverBase> p = createRetriever(playerType); 129 if (p == NULL) return NO_INIT; 130 status_t ret = p->setDataSource(url, headers); 131 if (ret == NO_ERROR) mRetriever = p; 132 return ret; 133 } 134 135 status_t MetadataRetrieverClient::setDataSource(int fd, int64_t offset, int64_t length) 136 { 137 ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length); 138 Mutex::Autolock lock(mLock); 139 struct stat sb; 140 int ret = fstat(fd, &sb); 141 if (ret != 0) { 142 ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno)); 143 return BAD_VALUE; 144 } 145 ALOGV("st_dev = %llu", sb.st_dev); 146 ALOGV("st_mode = %u", sb.st_mode); 147 ALOGV("st_uid = %lu", sb.st_uid); 148 ALOGV("st_gid = %lu", sb.st_gid); 149 ALOGV("st_size = %llu", sb.st_size); 150 151 if (offset >= sb.st_size) { 152 ALOGE("offset (%lld) bigger than file size (%llu)", offset, sb.st_size); 153 ::close(fd); 154 return BAD_VALUE; 155 } 156 if (offset + length > sb.st_size) { 157 length = sb.st_size - offset; 158 ALOGV("calculated length = %lld", length); 159 } 160 161 player_type playerType = 162 MediaPlayerFactory::getPlayerType(NULL /* client */, 163 fd, 164 offset, 165 length); 166 ALOGV("player type = %d", playerType); 167 sp<MediaMetadataRetrieverBase> p = createRetriever(playerType); 168 if (p == NULL) { 169 ::close(fd); 170 return NO_INIT; 171 } 172 status_t status = p->setDataSource(fd, offset, length); 173 if (status == NO_ERROR) mRetriever = p; 174 ::close(fd); 175 return status; 176 } 177 178 sp<IMemory> MetadataRetrieverClient::getFrameAtTime(int64_t timeUs, int option) 179 { 180 ALOGV("getFrameAtTime: time(%lld us) option(%d)", timeUs, option); 181 Mutex::Autolock lock(mLock); 182 mThumbnail.clear(); 183 if (mRetriever == NULL) { 184 ALOGE("retriever is not initialized"); 185 return NULL; 186 } 187 VideoFrame *frame = mRetriever->getFrameAtTime(timeUs, option); 188 if (frame == NULL) { 189 ALOGE("failed to capture a video frame"); 190 return NULL; 191 } 192 size_t size = sizeof(VideoFrame) + frame->mSize; 193 sp<MemoryHeapBase> heap = new MemoryHeapBase(size, 0, "MetadataRetrieverClient"); 194 if (heap == NULL) { 195 ALOGE("failed to create MemoryDealer"); 196 delete frame; 197 return NULL; 198 } 199 mThumbnail = new MemoryBase(heap, 0, size); 200 if (mThumbnail == NULL) { 201 ALOGE("not enough memory for VideoFrame size=%u", size); 202 delete frame; 203 return NULL; 204 } 205 VideoFrame *frameCopy = static_cast<VideoFrame *>(mThumbnail->pointer()); 206 frameCopy->mWidth = frame->mWidth; 207 frameCopy->mHeight = frame->mHeight; 208 frameCopy->mDisplayWidth = frame->mDisplayWidth; 209 frameCopy->mDisplayHeight = frame->mDisplayHeight; 210 frameCopy->mSize = frame->mSize; 211 frameCopy->mRotationAngle = frame->mRotationAngle; 212 ALOGV("rotation: %d", frameCopy->mRotationAngle); 213 frameCopy->mData = (uint8_t *)frameCopy + sizeof(VideoFrame); 214 memcpy(frameCopy->mData, frame->mData, frame->mSize); 215 delete frame; // Fix memory leakage 216 return mThumbnail; 217 } 218 219 sp<IMemory> MetadataRetrieverClient::extractAlbumArt() 220 { 221 ALOGV("extractAlbumArt"); 222 Mutex::Autolock lock(mLock); 223 mAlbumArt.clear(); 224 if (mRetriever == NULL) { 225 ALOGE("retriever is not initialized"); 226 return NULL; 227 } 228 MediaAlbumArt *albumArt = mRetriever->extractAlbumArt(); 229 if (albumArt == NULL) { 230 ALOGE("failed to extract an album art"); 231 return NULL; 232 } 233 size_t size = sizeof(MediaAlbumArt) + albumArt->mSize; 234 sp<MemoryHeapBase> heap = new MemoryHeapBase(size, 0, "MetadataRetrieverClient"); 235 if (heap == NULL) { 236 ALOGE("failed to create MemoryDealer object"); 237 delete albumArt; 238 return NULL; 239 } 240 mAlbumArt = new MemoryBase(heap, 0, size); 241 if (mAlbumArt == NULL) { 242 ALOGE("not enough memory for MediaAlbumArt size=%u", size); 243 delete albumArt; 244 return NULL; 245 } 246 MediaAlbumArt *albumArtCopy = static_cast<MediaAlbumArt *>(mAlbumArt->pointer()); 247 albumArtCopy->mSize = albumArt->mSize; 248 albumArtCopy->mData = (uint8_t *)albumArtCopy + sizeof(MediaAlbumArt); 249 memcpy(albumArtCopy->mData, albumArt->mData, albumArt->mSize); 250 delete albumArt; // Fix memory leakage 251 return mAlbumArt; 252 } 253 254 const char* MetadataRetrieverClient::extractMetadata(int keyCode) 255 { 256 ALOGV("extractMetadata"); 257 Mutex::Autolock lock(mLock); 258 if (mRetriever == NULL) { 259 ALOGE("retriever is not initialized"); 260 return NULL; 261 } 262 return mRetriever->extractMetadata(keyCode); 263 } 264 265 }; // namespace android 266