MetadataRetrieverClient.cpp revision 7562408b2261d38415453378b6188f74fda99d88 
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 <binder/MemoryDealer.h>
30#include <android_runtime/ActivityManager.h>
31#include <binder/IPCThreadState.h>
32#include <binder/IServiceManager.h>
33#include <media/MediaMetadataRetrieverInterface.h>
34#include <media/MediaPlayerInterface.h>
35#include <media/PVMetadataRetriever.h>
36#include <private/media/VideoFrame.h>
37
38#include "MetadataRetrieverClient.h"
39
40
41namespace android {
42
43MetadataRetrieverClient::MetadataRetrieverClient(pid_t pid)
44{
45    LOGV("MetadataRetrieverClient constructor pid(%d)", pid);
46    mPid = pid;
47    mThumbnailDealer = NULL;
48    mAlbumArtDealer = NULL;
49    mThumbnail = NULL;
50    mAlbumArt = NULL;
51
52#ifndef NO_OPENCORE
53    mRetriever = new PVMetadataRetriever();
54#else
55    mRetriever = NULL;
56#endif
57    if (mRetriever == NULL) {
58        LOGE("failed to initialize the retriever");
59    }
60}
61
62MetadataRetrieverClient::~MetadataRetrieverClient()
63{
64    LOGV("MetadataRetrieverClient destructor");
65    disconnect();
66}
67
68status_t MetadataRetrieverClient::dump(int fd, const Vector<String16>& args) const
69{
70    const size_t SIZE = 256;
71    char buffer[SIZE];
72    String8 result;
73    result.append(" MetadataRetrieverClient\n");
74    snprintf(buffer, 255, "  pid(%d)\n", mPid);
75    result.append(buffer);
76    write(fd, result.string(), result.size());
77    write(fd, "\n", 1);
78    return NO_ERROR;
79}
80
81void MetadataRetrieverClient::disconnect()
82{
83    LOGV("disconnect from pid %d", mPid);
84    Mutex::Autolock lock(mLock);
85    mRetriever.clear();
86    mThumbnailDealer.clear();
87    mAlbumArtDealer.clear();
88    mThumbnail.clear();
89    mAlbumArt.clear();
90    IPCThreadState::self()->flushCommands();
91}
92
93status_t MetadataRetrieverClient::setDataSource(const char *url)
94{
95    LOGV("setDataSource(%s)", url);
96    Mutex::Autolock lock(mLock);
97    if (url == NULL) {
98        return UNKNOWN_ERROR;
99    }
100    if (mRetriever == NULL) {
101        LOGE("retriever is not initialized");
102        return NO_INIT;
103    }
104    return mRetriever->setDataSource(url);
105}
106
107status_t MetadataRetrieverClient::setDataSource(int fd, int64_t offset, int64_t length)
108{
109    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
110    Mutex::Autolock lock(mLock);
111    if (mRetriever == NULL) {
112        LOGE("retriever is not initialized");
113        ::close(fd);
114        return NO_INIT;
115    }
116
117    struct stat sb;
118    int ret = fstat(fd, &sb);
119    if (ret != 0) {
120        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
121        return UNKNOWN_ERROR;
122    }
123    LOGV("st_dev  = %llu", sb.st_dev);
124    LOGV("st_mode = %u", sb.st_mode);
125    LOGV("st_uid  = %lu", sb.st_uid);
126    LOGV("st_gid  = %lu", sb.st_gid);
127    LOGV("st_size = %llu", sb.st_size);
128
129    if (offset >= sb.st_size) {
130        LOGE("offset (%lld) bigger than file size (%llu)", offset, sb.st_size);
131        ::close(fd);
132        return UNKNOWN_ERROR;
133    }
134    if (offset + length > sb.st_size) {
135        length = sb.st_size - offset;
136        LOGE("calculated length = %lld", length);
137    }
138    status_t status = mRetriever->setDataSource(fd, offset, length);
139    ::close(fd);
140    return status;
141}
142
143status_t MetadataRetrieverClient::setMode(int mode)
144{
145    LOGV("setMode");
146    Mutex::Autolock lock(mLock);
147    if (mRetriever == NULL) {
148        LOGE("retriever is not initialized");
149        return NO_INIT;
150    }
151    return mRetriever->setMode(mode);
152}
153
154status_t MetadataRetrieverClient::getMode(int* mode) const
155{
156    LOGV("getMode");
157    Mutex::Autolock lock(mLock);
158    if (mRetriever == NULL) {
159        LOGE("retriever is not initialized");
160        return NO_INIT;
161    }
162    return mRetriever->getMode(mode);
163}
164
165sp<IMemory> MetadataRetrieverClient::captureFrame()
166{
167    LOGV("captureFrame");
168    Mutex::Autolock lock(mLock);
169    mThumbnail.clear();
170    mThumbnailDealer.clear();
171    if (mRetriever == NULL) {
172        LOGE("retriever is not initialized");
173        return NULL;
174    }
175    VideoFrame *frame = mRetriever->captureFrame();
176    if (frame == NULL) {
177        LOGE("failed to capture a video frame");
178        return NULL;
179    }
180    size_t size = sizeof(VideoFrame) + frame->mSize;
181    mThumbnailDealer = new MemoryDealer(size);
182    if (mThumbnailDealer == NULL) {
183        LOGE("failed to create MemoryDealer");
184        delete frame;
185        return NULL;
186    }
187    mThumbnail = mThumbnailDealer->allocate(size);
188    if (mThumbnail == NULL) {
189        LOGE("not enough memory for VideoFrame size=%u", size);
190        mThumbnailDealer.clear();
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->mData = (uint8_t *)frameCopy + sizeof(VideoFrame);
201    memcpy(frameCopy->mData, frame->mData, frame->mSize);
202    delete frame;  // Fix memory leakage
203    return mThumbnail;
204}
205
206sp<IMemory> MetadataRetrieverClient::extractAlbumArt()
207{
208    LOGV("extractAlbumArt");
209    Mutex::Autolock lock(mLock);
210    mAlbumArt.clear();
211    mAlbumArtDealer.clear();
212    if (mRetriever == NULL) {
213        LOGE("retriever is not initialized");
214        return NULL;
215    }
216    MediaAlbumArt *albumArt = mRetriever->extractAlbumArt();
217    if (albumArt == NULL) {
218        LOGE("failed to extract an album art");
219        return NULL;
220    }
221    size_t size = sizeof(MediaAlbumArt) + albumArt->mSize;
222    mAlbumArtDealer = new MemoryDealer(size);
223    if (mAlbumArtDealer == NULL) {
224        LOGE("failed to create MemoryDealer object");
225        delete albumArt;
226        return NULL;
227    }
228    mAlbumArt = mAlbumArtDealer->allocate(size);
229    if (mAlbumArt == NULL) {
230        LOGE("not enough memory for MediaAlbumArt size=%u", size);
231        mAlbumArtDealer.clear();
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    LOGV("extractMetadata");
246    Mutex::Autolock lock(mLock);
247    if (mRetriever == NULL) {
248        LOGE("retriever is not initialized");
249        return NULL;
250    }
251    return mRetriever->extractMetadata(keyCode);
252}
253
254}; // namespace android
255