MetadataRetrieverClient.cpp revision af8791e112c8072452bd14ef3c43a47511d19542
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 <sys/resource.h> 25#include <dirent.h> 26#include <unistd.h> 27 28#include <string.h> 29#include <cutils/atomic.h> 30#include <cutils/properties.h> 31#include <binder/MemoryBase.h> 32#include <binder/MemoryHeapBase.h> 33#include <android_runtime/ActivityManager.h> 34#include <binder/IPCThreadState.h> 35#include <binder/IServiceManager.h> 36#include <media/MediaMetadataRetrieverInterface.h> 37#include <media/MediaPlayerInterface.h> 38#include <private/media/VideoFrame.h> 39#include "MidiMetadataRetriever.h" 40#include "MetadataRetrieverClient.h" 41#include "StagefrightMetadataRetriever.h" 42 43/* desktop Linux needs a little help with gettid() */ 44#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS) 45#define __KERNEL__ 46# include <linux/unistd.h> 47#ifdef _syscall0 48_syscall0(pid_t,gettid) 49#else 50pid_t gettid() { return syscall(__NR_gettid);} 51#endif 52#undef __KERNEL__ 53#endif 54 55namespace android { 56 57extern player_type getPlayerType(const char* url); 58extern player_type getPlayerType(int fd, int64_t offset, int64_t length); 59 60MetadataRetrieverClient::MetadataRetrieverClient(pid_t pid) 61{ 62 LOGV("MetadataRetrieverClient constructor pid(%d)", pid); 63 mPid = pid; 64 mThumbnail = NULL; 65 mAlbumArt = NULL; 66 mRetriever = NULL; 67} 68 69MetadataRetrieverClient::~MetadataRetrieverClient() 70{ 71 LOGV("MetadataRetrieverClient destructor"); 72 disconnect(); 73} 74 75status_t MetadataRetrieverClient::dump(int fd, const Vector<String16>& args) const 76{ 77 const size_t SIZE = 256; 78 char buffer[SIZE]; 79 String8 result; 80 result.append(" MetadataRetrieverClient\n"); 81 snprintf(buffer, 255, " pid(%d)\n", mPid); 82 result.append(buffer); 83 write(fd, result.string(), result.size()); 84 write(fd, "\n", 1); 85 return NO_ERROR; 86} 87 88void MetadataRetrieverClient::disconnect() 89{ 90 LOGV("disconnect from pid %d", mPid); 91 Mutex::Autolock lock(mLock); 92 mRetriever.clear(); 93 mThumbnail.clear(); 94 mAlbumArt.clear(); 95 IPCThreadState::self()->flushCommands(); 96} 97 98static sp<MediaMetadataRetrieverBase> createRetriever(player_type playerType) 99{ 100 sp<MediaMetadataRetrieverBase> p; 101 switch (playerType) { 102 case STAGEFRIGHT_PLAYER: 103 { 104 p = new StagefrightMetadataRetriever; 105 break; 106 } 107 case SONIVOX_PLAYER: 108 LOGV("create midi metadata retriever"); 109 p = new MidiMetadataRetriever(); 110 break; 111 default: 112 // TODO: 113 // support for TEST_PLAYER 114 LOGE("player type %d is not supported", playerType); 115 break; 116 } 117 if (p == NULL) { 118 LOGE("failed to create a retriever object"); 119 } 120 return p; 121} 122 123status_t MetadataRetrieverClient::setDataSource( 124 const char *url, const KeyedVector<String8, String8> *headers) 125{ 126 LOGV("setDataSource(%s)", url); 127 Mutex::Autolock lock(mLock); 128 if (url == NULL) { 129 return UNKNOWN_ERROR; 130 } 131 player_type playerType = getPlayerType(url); 132 LOGV("player type = %d", playerType); 133 sp<MediaMetadataRetrieverBase> p = createRetriever(playerType); 134 if (p == NULL) return NO_INIT; 135 status_t ret = p->setDataSource(url, headers); 136 if (ret == NO_ERROR) mRetriever = p; 137 return ret; 138} 139 140status_t MetadataRetrieverClient::setDataSource(int fd, int64_t offset, int64_t length) 141{ 142 LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length); 143 Mutex::Autolock lock(mLock); 144 struct stat sb; 145 int ret = fstat(fd, &sb); 146 if (ret != 0) { 147 LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno)); 148 return BAD_VALUE; 149 } 150 LOGV("st_dev = %llu", sb.st_dev); 151 LOGV("st_mode = %u", sb.st_mode); 152 LOGV("st_uid = %lu", sb.st_uid); 153 LOGV("st_gid = %lu", sb.st_gid); 154 LOGV("st_size = %llu", sb.st_size); 155 156 if (offset >= sb.st_size) { 157 LOGE("offset (%lld) bigger than file size (%llu)", offset, sb.st_size); 158 ::close(fd); 159 return BAD_VALUE; 160 } 161 if (offset + length > sb.st_size) { 162 length = sb.st_size - offset; 163 LOGV("calculated length = %lld", length); 164 } 165 166 player_type playerType = getPlayerType(fd, offset, length); 167 LOGV("player type = %d", playerType); 168 sp<MediaMetadataRetrieverBase> p = createRetriever(playerType); 169 if (p == NULL) { 170 ::close(fd); 171 return NO_INIT; 172 } 173 status_t status = p->setDataSource(fd, offset, length); 174 if (status == NO_ERROR) mRetriever = p; 175 ::close(fd); 176 return status; 177} 178 179sp<IMemory> MetadataRetrieverClient::getFrameAtTime(int64_t timeUs, int option) 180{ 181 LOGV("getFrameAtTime: time(%lld us) option(%d)", timeUs, option); 182 Mutex::Autolock lock(mLock); 183 mThumbnail.clear(); 184 if (mRetriever == NULL) { 185 LOGE("retriever is not initialized"); 186 return NULL; 187 } 188 VideoFrame *frame = mRetriever->getFrameAtTime(timeUs, option); 189 if (frame == NULL) { 190 LOGE("failed to capture a video frame"); 191 return NULL; 192 } 193 size_t size = sizeof(VideoFrame) + frame->mSize; 194 sp<MemoryHeapBase> heap = new MemoryHeapBase(size, 0, "MetadataRetrieverClient"); 195 if (heap == NULL) { 196 LOGE("failed to create MemoryDealer"); 197 delete frame; 198 return NULL; 199 } 200 mThumbnail = new MemoryBase(heap, 0, size); 201 if (mThumbnail == NULL) { 202 LOGE("not enough memory for VideoFrame size=%u", size); 203 delete frame; 204 return NULL; 205 } 206 VideoFrame *frameCopy = static_cast<VideoFrame *>(mThumbnail->pointer()); 207 frameCopy->mWidth = frame->mWidth; 208 frameCopy->mHeight = frame->mHeight; 209 frameCopy->mDisplayWidth = frame->mDisplayWidth; 210 frameCopy->mDisplayHeight = frame->mDisplayHeight; 211 frameCopy->mSize = frame->mSize; 212 frameCopy->mRotationAngle = frame->mRotationAngle; 213 LOGV("rotation: %d", frameCopy->mRotationAngle); 214 frameCopy->mData = (uint8_t *)frameCopy + sizeof(VideoFrame); 215 memcpy(frameCopy->mData, frame->mData, frame->mSize); 216 delete frame; // Fix memory leakage 217 return mThumbnail; 218} 219 220sp<IMemory> MetadataRetrieverClient::extractAlbumArt() 221{ 222 LOGV("extractAlbumArt"); 223 Mutex::Autolock lock(mLock); 224 mAlbumArt.clear(); 225 if (mRetriever == NULL) { 226 LOGE("retriever is not initialized"); 227 return NULL; 228 } 229 MediaAlbumArt *albumArt = mRetriever->extractAlbumArt(); 230 if (albumArt == NULL) { 231 LOGE("failed to extract an album art"); 232 return NULL; 233 } 234 size_t size = sizeof(MediaAlbumArt) + albumArt->mSize; 235 sp<MemoryHeapBase> heap = new MemoryHeapBase(size, 0, "MetadataRetrieverClient"); 236 if (heap == NULL) { 237 LOGE("failed to create MemoryDealer object"); 238 delete albumArt; 239 return NULL; 240 } 241 mAlbumArt = new MemoryBase(heap, 0, size); 242 if (mAlbumArt == NULL) { 243 LOGE("not enough memory for MediaAlbumArt size=%u", size); 244 delete albumArt; 245 return NULL; 246 } 247 MediaAlbumArt *albumArtCopy = static_cast<MediaAlbumArt *>(mAlbumArt->pointer()); 248 albumArtCopy->mSize = albumArt->mSize; 249 albumArtCopy->mData = (uint8_t *)albumArtCopy + sizeof(MediaAlbumArt); 250 memcpy(albumArtCopy->mData, albumArt->mData, albumArt->mSize); 251 delete albumArt; // Fix memory leakage 252 return mAlbumArt; 253} 254 255const char* MetadataRetrieverClient::extractMetadata(int keyCode) 256{ 257 LOGV("extractMetadata"); 258 Mutex::Autolock lock(mLock); 259 if (mRetriever == NULL) { 260 LOGE("retriever is not initialized"); 261 return NULL; 262 } 263 return mRetriever->extractMetadata(keyCode); 264} 265 266}; // namespace android 267