| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| //#define LOG_NDEBUG 0 |
| #define LOG_TAG "BpMediaExtractor" |
| #include <utils/Log.h> |
| |
| #include <stdint.h> |
| #include <sys/types.h> |
| |
| #include <binder/IPCThreadState.h> |
| #include <binder/Parcel.h> |
| #include <binder/PermissionCache.h> |
| #include <media/IMediaExtractor.h> |
| #include <media/stagefright/MetaData.h> |
| |
| namespace android { |
| |
| enum { |
| COUNTTRACKS = IBinder::FIRST_CALL_TRANSACTION, |
| GETTRACK, |
| GETTRACKMETADATA, |
| GETMETADATA, |
| FLAGS, |
| GETDRMTRACKINFO, |
| SETMEDIACAS, |
| SETUID, |
| NAME, |
| GETMETRICS, |
| RELEASE, |
| }; |
| |
| class BpMediaExtractor : public BpInterface<IMediaExtractor> { |
| public: |
| explicit BpMediaExtractor(const sp<IBinder>& impl) |
| : BpInterface<IMediaExtractor>(impl) |
| { |
| } |
| |
| virtual size_t countTracks() { |
| ALOGV("countTracks"); |
| Parcel data, reply; |
| data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor()); |
| status_t ret = remote()->transact(COUNTTRACKS, data, &reply); |
| size_t numTracks = 0; |
| if (ret == NO_ERROR) { |
| numTracks = reply.readUint32(); |
| } |
| return numTracks; |
| } |
| virtual sp<IMediaSource> getTrack(size_t index) { |
| ALOGV("getTrack(%zu)", index); |
| Parcel data, reply; |
| data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor()); |
| data.writeUint32(index); |
| status_t ret = remote()->transact(GETTRACK, data, &reply); |
| if (ret == NO_ERROR) { |
| return interface_cast<IMediaSource>(reply.readStrongBinder()); |
| } |
| return NULL; |
| } |
| |
| virtual sp<MetaData> getTrackMetaData( |
| size_t index, uint32_t flags) { |
| ALOGV("getTrackMetaData(%zu, %u)", index, flags); |
| Parcel data, reply; |
| data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor()); |
| data.writeUint32(index); |
| data.writeUint32(flags); |
| status_t ret = remote()->transact(GETTRACKMETADATA, data, &reply); |
| if (ret == NO_ERROR) { |
| return MetaData::createFromParcel(reply); |
| } |
| return NULL; |
| } |
| |
| virtual sp<MetaData> getMetaData() { |
| ALOGV("getMetaData"); |
| Parcel data, reply; |
| data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor()); |
| status_t ret = remote()->transact(GETMETADATA, data, &reply); |
| if (ret == NO_ERROR) { |
| return MetaData::createFromParcel(reply); |
| } |
| return NULL; |
| } |
| |
| virtual status_t getMetrics(Parcel * reply) { |
| Parcel data; |
| data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor()); |
| status_t ret = remote()->transact(GETMETRICS, data, reply); |
| if (ret == NO_ERROR) { |
| return OK; |
| } |
| return UNKNOWN_ERROR; |
| } |
| |
| virtual uint32_t flags() const { |
| ALOGV("flags NOT IMPLEMENTED"); |
| return 0; |
| } |
| |
| virtual char* getDrmTrackInfo(size_t trackID __unused, int *len __unused) { |
| ALOGV("getDrmTrackInfo NOT IMPLEMENTED"); |
| return NULL; |
| } |
| |
| virtual status_t setMediaCas(const HInterfaceToken &casToken) { |
| ALOGV("setMediaCas"); |
| |
| Parcel data, reply; |
| data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor()); |
| data.writeByteVector(casToken); |
| |
| status_t err = remote()->transact(SETMEDIACAS, data, &reply); |
| if (err != NO_ERROR) { |
| return err; |
| } |
| return reply.readInt32(); |
| } |
| |
| virtual void setUID(uid_t uid __unused) { |
| ALOGV("setUID NOT IMPLEMENTED"); |
| } |
| |
| virtual const char * name() { |
| ALOGV("name NOT IMPLEMENTED"); |
| return NULL; |
| } |
| |
| virtual void release() { |
| ALOGV("release"); |
| Parcel data, reply; |
| data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor()); |
| remote()->transact(RELEASE, data, &reply); |
| } |
| }; |
| |
| IMPLEMENT_META_INTERFACE(MediaExtractor, "android.media.IMediaExtractor"); |
| |
| #undef LOG_TAG |
| #define LOG_TAG "BnMediaExtractor" |
| |
| status_t BnMediaExtractor::onTransact( |
| uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) |
| { |
| switch (code) { |
| case COUNTTRACKS: { |
| ALOGV("countTracks"); |
| CHECK_INTERFACE(IMediaExtractor, data, reply); |
| size_t numTracks = countTracks(); |
| if (numTracks > INT32_MAX) { |
| numTracks = 0; |
| } |
| reply->writeUint32(uint32_t(numTracks)); |
| return NO_ERROR; |
| } |
| case GETTRACK: { |
| ALOGV("getTrack()"); |
| CHECK_INTERFACE(IMediaExtractor, data, reply); |
| uint32_t idx; |
| if (data.readUint32(&idx) == NO_ERROR) { |
| const sp<IMediaSource> track = getTrack(size_t(idx)); |
| registerMediaSource(this, track); |
| return reply->writeStrongBinder(IInterface::asBinder(track)); |
| } |
| return UNKNOWN_ERROR; |
| } |
| case GETTRACKMETADATA: { |
| ALOGV("getTrackMetaData"); |
| CHECK_INTERFACE(IMediaExtractor, data, reply); |
| uint32_t idx; |
| uint32_t flags; |
| if (data.readUint32(&idx) == NO_ERROR && |
| data.readUint32(&flags) == NO_ERROR) { |
| sp<MetaData> meta = getTrackMetaData(idx, flags); |
| if (meta == NULL) { |
| return UNKNOWN_ERROR; |
| } |
| meta->writeToParcel(*reply); |
| return NO_ERROR; |
| } |
| return UNKNOWN_ERROR; |
| } |
| case GETMETADATA: { |
| ALOGV("getMetaData"); |
| CHECK_INTERFACE(IMediaExtractor, data, reply); |
| sp<MetaData> meta = getMetaData(); |
| if (meta != NULL) { |
| meta->writeToParcel(*reply); |
| return NO_ERROR; |
| } |
| return UNKNOWN_ERROR; |
| } |
| case GETMETRICS: { |
| CHECK_INTERFACE(IMediaExtractor, data, reply); |
| status_t ret = getMetrics(reply); |
| return ret; |
| } |
| case SETMEDIACAS: { |
| ALOGV("setMediaCas"); |
| CHECK_INTERFACE(IMediaExtractor, data, reply); |
| |
| HInterfaceToken casToken; |
| status_t err = data.readByteVector(&casToken); |
| if (err != NO_ERROR) { |
| ALOGE("Error reading casToken from parcel"); |
| return err; |
| } |
| |
| reply->writeInt32(setMediaCas(casToken)); |
| return OK; |
| } |
| case RELEASE: { |
| ALOGV("release"); |
| CHECK_INTERFACE(IMediaExtractor, data, reply); |
| release(); |
| return OK; |
| } |
| default: |
| return BBinder::onTransact(code, data, reply, flags); |
| } |
| } |
| |
| typedef struct { |
| String8 mime; |
| String8 name; |
| String8 sourceDescription; |
| pid_t owner; |
| wp<IMediaExtractor> extractor; |
| Vector<wp<IMediaSource>> tracks; |
| Vector<String8> trackDescriptions; |
| String8 toString() const; |
| } ExtractorInstance; |
| |
| String8 ExtractorInstance::toString() const { |
| String8 str = name; |
| str.append(" for mime "); |
| str.append(mime); |
| str.append(", source "); |
| str.append(sourceDescription); |
| str.append(String8::format(", pid %d: ", owner)); |
| if (extractor.promote() == NULL) { |
| str.append("deleted\n"); |
| } else { |
| str.append("active\n"); |
| } |
| for (size_t i = 0; i < tracks.size(); i++) { |
| const String8 desc = trackDescriptions.itemAt(i); |
| str.appendFormat(" track {%s} ", desc.string()); |
| wp<IMediaSource> wSource = tracks.itemAt(i); |
| if (wSource == NULL) { |
| str.append(": null\n"); |
| } else { |
| const sp<IMediaSource> source = wSource.promote(); |
| if (source == NULL) { |
| str.append(": deleted\n"); |
| } else { |
| str.appendFormat(": active\n"); |
| } |
| } |
| } |
| return str; |
| } |
| |
| static Vector<ExtractorInstance> sExtractors; |
| static Mutex sExtractorsLock; |
| |
| void registerMediaSource( |
| const sp<IMediaExtractor> &ex, |
| const sp<IMediaSource> &source) { |
| Mutex::Autolock lock(sExtractorsLock); |
| for (size_t i = 0; i < sExtractors.size(); i++) { |
| ExtractorInstance &instance = sExtractors.editItemAt(i); |
| sp<IMediaExtractor> extractor = instance.extractor.promote(); |
| if (extractor != NULL && extractor == ex) { |
| if (instance.tracks.size() > 5) { |
| instance.tracks.resize(5); |
| instance.trackDescriptions.resize(5); |
| } |
| instance.tracks.push_front(source); |
| if (source != NULL) { |
| instance.trackDescriptions.push_front(source->getFormat()->toString()); |
| } else { |
| instance.trackDescriptions.push_front(String8::empty()); |
| } |
| break; |
| } |
| } |
| } |
| |
| void registerMediaExtractor( |
| const sp<IMediaExtractor> &extractor, |
| const sp<DataSource> &source, |
| const char *mime) { |
| ExtractorInstance ex; |
| ex.mime = mime == NULL ? "NULL" : mime; |
| ex.name = extractor->name(); |
| ex.sourceDescription = source->toString(); |
| ex.owner = IPCThreadState::self()->getCallingPid(); |
| ex.extractor = extractor; |
| |
| { |
| Mutex::Autolock lock(sExtractorsLock); |
| if (sExtractors.size() > 10) { |
| sExtractors.resize(10); |
| } |
| sExtractors.push_front(ex); |
| } |
| } |
| |
| status_t dumpExtractors(int fd, const Vector<String16>&) { |
| String8 out; |
| const IPCThreadState* ipc = IPCThreadState::self(); |
| const int pid = ipc->getCallingPid(); |
| const int uid = ipc->getCallingUid(); |
| if (!PermissionCache::checkPermission(String16("android.permission.DUMP"), pid, uid)) { |
| out.appendFormat("Permission Denial: " |
| "can't dump MediaExtractor from pid=%d, uid=%d\n", pid, uid); |
| } else { |
| out.append("Recent extractors, most recent first:\n"); |
| { |
| Mutex::Autolock lock(sExtractorsLock); |
| for (size_t i = 0; i < sExtractors.size(); i++) { |
| const ExtractorInstance &instance = sExtractors.itemAt(i); |
| out.append(" "); |
| out.append(instance.toString()); |
| } |
| } |
| } |
| write(fd, out.string(), out.size()); |
| return OK; |
| } |
| |
| |
| } // namespace android |
| |