MetadataRetrieverClient.cpp revision 55203e2e29428c2c7bd830d731f5e6ed890d9a10
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 "MetadataRetrieverClient.h" 39#include "StagefrightMetadataRetriever.h" 40#include "MediaPlayerFactory.h" 41 42namespace android { 43 44MetadataRetrieverClient::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 53MetadataRetrieverClient::~MetadataRetrieverClient() 54{ 55 ALOGV("MetadataRetrieverClient destructor"); 56 disconnect(); 57} 58 59status_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 72void 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 82static 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 default: 93 // TODO: 94 // support for TEST_PLAYER 95 ALOGE("player type %d is not supported", playerType); 96 break; 97 } 98 if (p == NULL) { 99 ALOGE("failed to create a retriever object"); 100 } 101 return p; 102} 103 104status_t MetadataRetrieverClient::setDataSource( 105 const sp<IMediaHTTPService> &httpService, 106 const char *url, 107 const KeyedVector<String8, String8> *headers) 108{ 109 ALOGV("setDataSource(%s)", url); 110 Mutex::Autolock lock(mLock); 111 if (url == NULL) { 112 return UNKNOWN_ERROR; 113 } 114 115 // When asking the MediaPlayerFactory subsystem to choose a media player for 116 // a given URL, a pointer to an outer IMediaPlayer can be passed to the 117 // factory system to be taken into consideration along with the URL. In the 118 // case of choosing an instance of a MediaPlayerBase for a 119 // MetadataRetrieverClient, there is no outer IMediaPlayer which will 120 // eventually encapsulate the result of this selection. In this case, just 121 // pass NULL to getPlayerType to indicate that there is no outer 122 // IMediaPlayer to consider during selection. 123 player_type playerType = 124 MediaPlayerFactory::getPlayerType(NULL /* client */, url); 125 ALOGV("player type = %d", playerType); 126 sp<MediaMetadataRetrieverBase> p = createRetriever(playerType); 127 if (p == NULL) return NO_INIT; 128 status_t ret = p->setDataSource(httpService, url, headers); 129 if (ret == NO_ERROR) mRetriever = p; 130 return ret; 131} 132 133status_t MetadataRetrieverClient::setDataSource(int fd, int64_t offset, int64_t length) 134{ 135 ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length); 136 Mutex::Autolock lock(mLock); 137 struct stat sb; 138 int ret = fstat(fd, &sb); 139 if (ret != 0) { 140 ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno)); 141 return BAD_VALUE; 142 } 143 ALOGV("st_dev = %llu", sb.st_dev); 144 ALOGV("st_mode = %u", sb.st_mode); 145 ALOGV("st_uid = %lu", static_cast<unsigned long>(sb.st_uid)); 146 ALOGV("st_gid = %lu", static_cast<unsigned long>(sb.st_gid)); 147 ALOGV("st_size = %llu", sb.st_size); 148 149 if (offset >= sb.st_size) { 150 ALOGE("offset (%lld) bigger than file size (%llu)", offset, sb.st_size); 151 return BAD_VALUE; 152 } 153 if (offset + length > sb.st_size) { 154 length = sb.st_size - offset; 155 ALOGV("calculated length = %lld", length); 156 } 157 158 player_type playerType = 159 MediaPlayerFactory::getPlayerType(NULL /* client */, 160 fd, 161 offset, 162 length); 163 ALOGV("player type = %d", playerType); 164 sp<MediaMetadataRetrieverBase> p = createRetriever(playerType); 165 if (p == NULL) { 166 return NO_INIT; 167 } 168 status_t status = p->setDataSource(fd, offset, length); 169 if (status == NO_ERROR) mRetriever = p; 170 return status; 171} 172 173sp<IMemory> MetadataRetrieverClient::getFrameAtTime(int64_t timeUs, int option) 174{ 175 ALOGV("getFrameAtTime: time(%lld us) option(%d)", timeUs, option); 176 Mutex::Autolock lock(mLock); 177 mThumbnail.clear(); 178 if (mRetriever == NULL) { 179 ALOGE("retriever is not initialized"); 180 return NULL; 181 } 182 VideoFrame *frame = mRetriever->getFrameAtTime(timeUs, option); 183 if (frame == NULL) { 184 ALOGE("failed to capture a video frame"); 185 return NULL; 186 } 187 size_t size = sizeof(VideoFrame) + frame->mSize; 188 sp<MemoryHeapBase> heap = new MemoryHeapBase(size, 0, "MetadataRetrieverClient"); 189 if (heap == NULL) { 190 ALOGE("failed to create MemoryDealer"); 191 delete frame; 192 return NULL; 193 } 194 mThumbnail = new MemoryBase(heap, 0, size); 195 if (mThumbnail == NULL) { 196 ALOGE("not enough memory for VideoFrame size=%u", size); 197 delete frame; 198 return NULL; 199 } 200 VideoFrame *frameCopy = static_cast<VideoFrame *>(mThumbnail->pointer()); 201 frameCopy->mWidth = frame->mWidth; 202 frameCopy->mHeight = frame->mHeight; 203 frameCopy->mDisplayWidth = frame->mDisplayWidth; 204 frameCopy->mDisplayHeight = frame->mDisplayHeight; 205 frameCopy->mSize = frame->mSize; 206 frameCopy->mRotationAngle = frame->mRotationAngle; 207 ALOGV("rotation: %d", frameCopy->mRotationAngle); 208 frameCopy->mData = (uint8_t *)frameCopy + sizeof(VideoFrame); 209 memcpy(frameCopy->mData, frame->mData, frame->mSize); 210 delete frame; // Fix memory leakage 211 return mThumbnail; 212} 213 214sp<IMemory> MetadataRetrieverClient::extractAlbumArt() 215{ 216 ALOGV("extractAlbumArt"); 217 Mutex::Autolock lock(mLock); 218 mAlbumArt.clear(); 219 if (mRetriever == NULL) { 220 ALOGE("retriever is not initialized"); 221 return NULL; 222 } 223 MediaAlbumArt *albumArt = mRetriever->extractAlbumArt(); 224 if (albumArt == NULL) { 225 ALOGE("failed to extract an album art"); 226 return NULL; 227 } 228 size_t size = sizeof(MediaAlbumArt) + albumArt->size(); 229 sp<MemoryHeapBase> heap = new MemoryHeapBase(size, 0, "MetadataRetrieverClient"); 230 if (heap == NULL) { 231 ALOGE("failed to create MemoryDealer object"); 232 delete albumArt; 233 return NULL; 234 } 235 mAlbumArt = new MemoryBase(heap, 0, size); 236 if (mAlbumArt == NULL) { 237 ALOGE("not enough memory for MediaAlbumArt size=%u", size); 238 delete albumArt; 239 return NULL; 240 } 241 MediaAlbumArt::init((MediaAlbumArt *) mAlbumArt->pointer(), 242 albumArt->size(), albumArt->data()); 243 delete albumArt; // We've taken our copy. 244 return mAlbumArt; 245} 246 247const char* MetadataRetrieverClient::extractMetadata(int keyCode) 248{ 249 ALOGV("extractMetadata"); 250 Mutex::Autolock lock(mLock); 251 if (mRetriever == NULL) { 252 ALOGE("retriever is not initialized"); 253 return NULL; 254 } 255 return mRetriever->extractMetadata(keyCode); 256} 257 258}; // namespace android 259