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396 lines
12 KiB
396 lines
12 KiB
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//#define LOG_NDEBUG 0
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#define LOG_TAG "BpMediaExtractor"
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#include <utils/Log.h>
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#include <stdint.h>
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#include <time.h>
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#include <sys/types.h>
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#include <binder/IPCThreadState.h>
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#include <binder/Parcel.h>
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#include <binder/PermissionCache.h>
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#include <android/IMediaExtractor.h>
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#include <media/stagefright/MetaData.h>
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namespace android {
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enum {
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COUNTTRACKS = IBinder::FIRST_CALL_TRANSACTION,
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GETTRACK,
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GETTRACKMETADATA,
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GETMETADATA,
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FLAGS,
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SETMEDIACAS,
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NAME,
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GETMETRICS,
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SETENTRYPOINT,
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SETLOGSESSIONID
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};
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class BpMediaExtractor : public BpInterface<IMediaExtractor> {
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public:
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explicit BpMediaExtractor(const sp<IBinder>& impl)
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: BpInterface<IMediaExtractor>(impl)
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{
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}
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virtual size_t countTracks() {
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ALOGV("countTracks");
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Parcel data, reply;
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data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor());
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status_t ret = remote()->transact(COUNTTRACKS, data, &reply);
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size_t numTracks = 0;
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if (ret == NO_ERROR) {
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numTracks = reply.readUint32();
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}
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return numTracks;
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}
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virtual sp<IMediaSource> getTrack(size_t index) {
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ALOGV("getTrack(%zu)", index);
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Parcel data, reply;
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data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor());
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data.writeUint32(index);
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status_t ret = remote()->transact(GETTRACK, data, &reply);
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if (ret == NO_ERROR) {
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return interface_cast<IMediaSource>(reply.readStrongBinder());
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}
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return NULL;
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}
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virtual sp<MetaData> getTrackMetaData(
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size_t index, uint32_t flags) {
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ALOGV("getTrackMetaData(%zu, %u)", index, flags);
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Parcel data, reply;
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data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor());
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data.writeUint32(index);
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data.writeUint32(flags);
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status_t ret = remote()->transact(GETTRACKMETADATA, data, &reply);
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if (ret == NO_ERROR) {
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return MetaData::createFromParcel(reply);
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}
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return NULL;
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}
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virtual sp<MetaData> getMetaData() {
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ALOGV("getMetaData");
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Parcel data, reply;
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data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor());
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status_t ret = remote()->transact(GETMETADATA, data, &reply);
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if (ret == NO_ERROR) {
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return MetaData::createFromParcel(reply);
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}
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return NULL;
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}
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virtual status_t getMetrics(Parcel * reply) {
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Parcel data;
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data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor());
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status_t ret = remote()->transact(GETMETRICS, data, reply);
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if (ret == NO_ERROR) {
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return OK;
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}
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return UNKNOWN_ERROR;
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}
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virtual uint32_t flags() const {
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ALOGV("flags");
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Parcel data, reply;
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data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor());
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status_t ret = remote()->transact(FLAGS, data, &reply);
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int flgs = 0;
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if (ret == NO_ERROR) {
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flgs = reply.readUint32();
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}
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return flgs;
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}
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virtual status_t setMediaCas(const HInterfaceToken &casToken) {
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ALOGV("setMediaCas");
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Parcel data, reply;
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data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor());
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data.writeByteVector(casToken);
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status_t err = remote()->transact(SETMEDIACAS, data, &reply);
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if (err != NO_ERROR) {
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return err;
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}
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return reply.readInt32();
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}
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virtual String8 name() {
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Parcel data, reply;
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data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor());
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status_t ret = remote()->transact(NAME, data, &reply);
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String8 nm;
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if (ret == NO_ERROR) {
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nm = reply.readString8();
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}
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return nm;
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}
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virtual status_t setEntryPoint(EntryPoint entryPoint) {
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Parcel data, reply;
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data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor());
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data.writeInt32(static_cast<int32_t>(entryPoint));
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return remote()->transact(SETENTRYPOINT, data, &reply);
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}
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virtual status_t setLogSessionId(const String8& logSessionId) {
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Parcel data, reply;
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data.writeInterfaceToken(BpMediaExtractor::getInterfaceDescriptor());
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data.writeString8(logSessionId);
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return remote()->transact(SETLOGSESSIONID, data, &reply);
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}
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};
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IMPLEMENT_META_INTERFACE(MediaExtractor, "android.media.IMediaExtractor");
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#undef LOG_TAG
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#define LOG_TAG "BnMediaExtractor"
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status_t BnMediaExtractor::onTransact(
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uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
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{
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switch (code) {
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case COUNTTRACKS: {
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ALOGV("countTracks");
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CHECK_INTERFACE(IMediaExtractor, data, reply);
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size_t numTracks = countTracks();
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if (numTracks > INT32_MAX) {
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numTracks = 0;
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}
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reply->writeUint32(uint32_t(numTracks));
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return NO_ERROR;
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}
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case GETTRACK: {
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ALOGV("getTrack()");
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CHECK_INTERFACE(IMediaExtractor, data, reply);
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uint32_t idx;
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if (data.readUint32(&idx) == NO_ERROR) {
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const sp<IMediaSource> track = getTrack(size_t(idx));
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registerMediaSource(this, track);
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return reply->writeStrongBinder(IInterface::asBinder(track));
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}
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return UNKNOWN_ERROR;
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}
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case GETTRACKMETADATA: {
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ALOGV("getTrackMetaData");
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CHECK_INTERFACE(IMediaExtractor, data, reply);
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uint32_t idx;
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uint32_t flags;
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if (data.readUint32(&idx) == NO_ERROR &&
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data.readUint32(&flags) == NO_ERROR) {
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sp<MetaData> meta = getTrackMetaData(idx, flags);
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if (meta == NULL) {
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return UNKNOWN_ERROR;
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}
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meta->writeToParcel(*reply);
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return NO_ERROR;
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}
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return UNKNOWN_ERROR;
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}
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case GETMETADATA: {
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ALOGV("getMetaData");
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CHECK_INTERFACE(IMediaExtractor, data, reply);
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sp<MetaData> meta = getMetaData();
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if (meta != NULL) {
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meta->writeToParcel(*reply);
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return NO_ERROR;
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}
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return UNKNOWN_ERROR;
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}
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case GETMETRICS: {
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CHECK_INTERFACE(IMediaExtractor, data, reply);
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status_t ret = getMetrics(reply);
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return ret;
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}
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case FLAGS: {
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ALOGV("flags");
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CHECK_INTERFACE(IMediaExtractor, data, reply);
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reply->writeUint32(this->flags());
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return NO_ERROR;
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}
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case SETMEDIACAS: {
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ALOGV("setMediaCas");
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CHECK_INTERFACE(IMediaExtractor, data, reply);
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HInterfaceToken casToken;
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status_t err = data.readByteVector(&casToken);
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if (err != NO_ERROR) {
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ALOGE("Error reading casToken from parcel");
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return err;
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}
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reply->writeInt32(setMediaCas(casToken));
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return OK;
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}
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case NAME: {
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ALOGV("name");
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CHECK_INTERFACE(IMediaExtractor, data, reply);
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String8 nm = name();
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reply->writeString8(nm);
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return NO_ERROR;
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}
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case SETENTRYPOINT: {
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ALOGV("setEntryPoint");
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CHECK_INTERFACE(IMediaExtractor, data, reply);
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int32_t entryPoint;
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status_t err = data.readInt32(&entryPoint);
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if (err == OK) {
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setEntryPoint(EntryPoint(entryPoint));
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}
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return err;
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}
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case SETLOGSESSIONID: {
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ALOGV("setLogSessionId");
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CHECK_INTERFACE(IMediaExtractor, data, reply);
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String8 logSessionId;
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status_t status = data.readString8(&logSessionId);
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if (status == OK) {
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setLogSessionId(logSessionId);
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}
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return status;
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}
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default:
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return BBinder::onTransact(code, data, reply, flags);
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}
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}
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typedef struct {
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String8 mime;
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String8 name;
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String8 sourceDescription;
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pid_t owner;
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wp<IMediaExtractor> extractor;
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Vector<wp<IMediaSource>> tracks;
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Vector<String8> trackDescriptions;
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String8 toString() const;
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time_t when;
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} ExtractorInstance;
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String8 ExtractorInstance::toString() const {
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String8 str;
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char timeString[32];
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strftime(timeString, sizeof(timeString), "%m-%d %T", localtime(&when));
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str.append(timeString);
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str.append(": ");
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str.append(name);
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str.append(" for mime ");
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str.append(mime);
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str.append(", source ");
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str.append(sourceDescription);
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str.append(String8::format(", pid %d: ", owner));
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if (extractor.promote() == NULL) {
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str.append("deleted\n");
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} else {
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str.append("active\n");
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}
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for (size_t i = 0; i < tracks.size(); i++) {
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const String8 desc = trackDescriptions.itemAt(i);
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str.appendFormat(" track {%s} ", desc.string());
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wp<IMediaSource> wSource = tracks.itemAt(i);
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if (wSource == NULL) {
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str.append(": null\n");
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} else {
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const sp<IMediaSource> source = wSource.promote();
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if (source == NULL) {
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str.append(": deleted\n");
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} else {
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str.appendFormat(": active\n");
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}
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}
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}
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return str;
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}
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static Vector<ExtractorInstance> sExtractors;
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static Mutex sExtractorsLock;
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void registerMediaSource(
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const sp<IMediaExtractor> &ex,
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const sp<IMediaSource> &source) {
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Mutex::Autolock lock(sExtractorsLock);
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for (size_t i = 0; i < sExtractors.size(); i++) {
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ExtractorInstance &instance = sExtractors.editItemAt(i);
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sp<IMediaExtractor> extractor = instance.extractor.promote();
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if (extractor != NULL && extractor == ex) {
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if (instance.tracks.size() > 5) {
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instance.tracks.resize(5);
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instance.trackDescriptions.resize(5);
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}
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instance.tracks.push_front(source);
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if (source != NULL) {
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instance.trackDescriptions.push_front(source->getFormat()->toString());
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} else {
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instance.trackDescriptions.push_front(String8::empty());
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}
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break;
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}
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}
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}
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void registerMediaExtractor(
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const sp<IMediaExtractor> &extractor,
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const sp<DataSource> &source,
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const char *mime) {
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ExtractorInstance ex;
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ex.mime = mime == NULL ? "NULL" : mime;
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ex.name = extractor->name();
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ex.sourceDescription = source->toString();
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ex.owner = IPCThreadState::self()->getCallingPid();
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ex.extractor = extractor;
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ex.when = time(NULL);
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{
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Mutex::Autolock lock(sExtractorsLock);
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if (sExtractors.size() > 10) {
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sExtractors.resize(10);
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}
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sExtractors.push_front(ex);
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}
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}
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status_t dumpExtractors(int fd, const Vector<String16>&) {
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String8 out;
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const IPCThreadState* ipc = IPCThreadState::self();
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const int pid = ipc->getCallingPid();
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const int uid = ipc->getCallingUid();
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if (!PermissionCache::checkPermission(String16("android.permission.DUMP"), pid, uid)) {
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out.appendFormat("Permission Denial: "
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"can't dump MediaExtractor from pid=%d, uid=%d\n", pid, uid);
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} else {
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out.append("Recent extractors, most recent first:\n");
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{
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Mutex::Autolock lock(sExtractorsLock);
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for (size_t i = 0; i < sExtractors.size(); i++) {
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const ExtractorInstance &instance = sExtractors.itemAt(i);
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out.append(" ");
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out.append(instance.toString());
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}
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}
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}
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write(fd, out.string(), out.size());
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return OK;
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}
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} // namespace android
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