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/IMediaHTTPService.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 #include "MediaPlayerFactory.h" 42 43 namespace android { 44 45 MetadataRetrieverClient::MetadataRetrieverClient(pid_t pid) 46 { 47 ALOGV("MetadataRetrieverClient constructor pid(%d)", pid); 48 mPid = pid; 49 mThumbnail = NULL; 50 mAlbumArt = NULL; 51 mRetriever = NULL; 52 } 53 54 MetadataRetrieverClient::~MetadataRetrieverClient() 55 { 56 ALOGV("MetadataRetrieverClient destructor"); 57 disconnect(); 58 } 59 60 status_t MetadataRetrieverClient::dump(int fd, const Vector<String16>& /*args*/) const 61 { 62 const size_t SIZE = 256; 63 char buffer[SIZE]; 64 String8 result; 65 result.append(" MetadataRetrieverClient\n"); 66 snprintf(buffer, 255, " pid(%d)\n", mPid); 67 result.append(buffer); 68 write(fd, result.string(), result.size()); 69 write(fd, "\n", 1); 70 return NO_ERROR; 71 } 72 73 void MetadataRetrieverClient::disconnect() 74 { 75 ALOGV("disconnect from pid %d", mPid); 76 Mutex::Autolock lock(mLock); 77 mRetriever.clear(); 78 mThumbnail.clear(); 79 mAlbumArt.clear(); 80 IPCThreadState::self()->flushCommands(); 81 } 82 83 static sp<MediaMetadataRetrieverBase> createRetriever(player_type playerType) 84 { 85 sp<MediaMetadataRetrieverBase> p; 86 switch (playerType) { 87 case STAGEFRIGHT_PLAYER: 88 case NU_PLAYER: 89 { 90 p = new StagefrightMetadataRetriever; 91 break; 92 } 93 case SONIVOX_PLAYER: 94 ALOGV("create midi metadata retriever"); 95 p = new MidiMetadataRetriever(); 96 break; 97 default: 98 // TODO: 99 // support for TEST_PLAYER 100 ALOGE("player type %d is not supported", playerType); 101 break; 102 } 103 if (p == NULL) { 104 ALOGE("failed to create a retriever object"); 105 } 106 return p; 107 } 108 109 status_t MetadataRetrieverClient::setDataSource( 110 const sp<IMediaHTTPService> &httpService, 111 const char *url, 112 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 } 119 120 // When asking the MediaPlayerFactory subsystem to choose a media player for 121 // a given URL, a pointer to an outer IMediaPlayer can be passed to the 122 // factory system to be taken into consideration along with the URL. In the 123 // case of choosing an instance of a MediaPlayerBase for a 124 // MetadataRetrieverClient, there is no outer IMediaPlayer which will 125 // eventually encapsulate the result of this selection. In this case, just 126 // pass NULL to getPlayerType to indicate that there is no outer 127 // IMediaPlayer to consider during selection. 128 player_type playerType = 129 MediaPlayerFactory::getPlayerType(NULL /* client */, url); 130 ALOGV("player type = %d", playerType); 131 sp<MediaMetadataRetrieverBase> p = createRetriever(playerType); 132 if (p == NULL) return NO_INIT; 133 status_t ret = p->setDataSource(httpService, url, headers); 134 if (ret == NO_ERROR) mRetriever = p; 135 return ret; 136 } 137 138 status_t MetadataRetrieverClient::setDataSource(int fd, int64_t offset, int64_t length) 139 { 140 ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length); 141 Mutex::Autolock lock(mLock); 142 struct stat sb; 143 int ret = fstat(fd, &sb); 144 if (ret != 0) { 145 ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno)); 146 return BAD_VALUE; 147 } 148 ALOGV("st_dev = %llu", sb.st_dev); 149 ALOGV("st_mode = %u", sb.st_mode); 150 ALOGV("st_uid = %lu", static_cast<unsigned long>(sb.st_uid)); 151 ALOGV("st_gid = %lu", static_cast<unsigned long>(sb.st_gid)); 152 ALOGV("st_size = %llu", sb.st_size); 153 154 if (offset >= sb.st_size) { 155 ALOGE("offset (%lld) bigger than file size (%llu)", offset, sb.st_size); 156 ::close(fd); 157 return BAD_VALUE; 158 } 159 if (offset + length > sb.st_size) { 160 length = sb.st_size - offset; 161 ALOGV("calculated length = %lld", length); 162 } 163 164 player_type playerType = 165 MediaPlayerFactory::getPlayerType(NULL /* client */, 166 fd, 167 offset, 168 length); 169 ALOGV("player type = %d", playerType); 170 sp<MediaMetadataRetrieverBase> p = createRetriever(playerType); 171 if (p == NULL) { 172 ::close(fd); 173 return NO_INIT; 174 } 175 status_t status = p->setDataSource(fd, offset, length); 176 if (status == NO_ERROR) mRetriever = p; 177 ::close(fd); 178 return status; 179 } 180 181 sp<IMemory> MetadataRetrieverClient::getFrameAtTime(int64_t timeUs, int option) 182 { 183 ALOGV("getFrameAtTime: time(%lld us) option(%d)", timeUs, option); 184 Mutex::Autolock lock(mLock); 185 mThumbnail.clear(); 186 if (mRetriever == NULL) { 187 ALOGE("retriever is not initialized"); 188 return NULL; 189 } 190 VideoFrame *frame = mRetriever->getFrameAtTime(timeUs, option); 191 if (frame == NULL) { 192 ALOGE("failed to capture a video frame"); 193 return NULL; 194 } 195 size_t size = sizeof(VideoFrame) + frame->mSize; 196 sp<MemoryHeapBase> heap = new MemoryHeapBase(size, 0, "MetadataRetrieverClient"); 197 if (heap == NULL) { 198 ALOGE("failed to create MemoryDealer"); 199 delete frame; 200 return NULL; 201 } 202 mThumbnail = new MemoryBase(heap, 0, size); 203 if (mThumbnail == NULL) { 204 ALOGE("not enough memory for VideoFrame size=%u", size); 205 delete frame; 206 return NULL; 207 } 208 VideoFrame *frameCopy = static_cast<VideoFrame *>(mThumbnail->pointer()); 209 frameCopy->mWidth = frame->mWidth; 210 frameCopy->mHeight = frame->mHeight; 211 frameCopy->mDisplayWidth = frame->mDisplayWidth; 212 frameCopy->mDisplayHeight = frame->mDisplayHeight; 213 frameCopy->mSize = frame->mSize; 214 frameCopy->mRotationAngle = frame->mRotationAngle; 215 ALOGV("rotation: %d", frameCopy->mRotationAngle); 216 frameCopy->mData = (uint8_t *)frameCopy + sizeof(VideoFrame); 217 memcpy(frameCopy->mData, frame->mData, frame->mSize); 218 delete frame; // Fix memory leakage 219 return mThumbnail; 220 } 221 222 sp<IMemory> MetadataRetrieverClient::extractAlbumArt() 223 { 224 ALOGV("extractAlbumArt"); 225 Mutex::Autolock lock(mLock); 226 mAlbumArt.clear(); 227 if (mRetriever == NULL) { 228 ALOGE("retriever is not initialized"); 229 return NULL; 230 } 231 MediaAlbumArt *albumArt = mRetriever->extractAlbumArt(); 232 if (albumArt == NULL) { 233 ALOGE("failed to extract an album art"); 234 return NULL; 235 } 236 size_t size = sizeof(MediaAlbumArt) + albumArt->size(); 237 sp<MemoryHeapBase> heap = new MemoryHeapBase(size, 0, "MetadataRetrieverClient"); 238 if (heap == NULL) { 239 ALOGE("failed to create MemoryDealer object"); 240 delete albumArt; 241 return NULL; 242 } 243 mAlbumArt = new MemoryBase(heap, 0, size); 244 if (mAlbumArt == NULL) { 245 ALOGE("not enough memory for MediaAlbumArt size=%u", size); 246 delete albumArt; 247 return NULL; 248 } 249 MediaAlbumArt::init((MediaAlbumArt *) mAlbumArt->pointer(), 250 albumArt->size(), albumArt->data()); 251 delete albumArt; // We've taken our copy. 252 return mAlbumArt; 253 } 254 255 const char* MetadataRetrieverClient::extractMetadata(int keyCode) 256 { 257 ALOGV("extractMetadata"); 258 Mutex::Autolock lock(mLock); 259 if (mRetriever == NULL) { 260 ALOGE("retriever is not initialized"); 261 return NULL; 262 } 263 return mRetriever->extractMetadata(keyCode); 264 } 265 266 }; // namespace android 267