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317 lines
13 KiB
317 lines
13 KiB
/*
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* Copyright (C) 2016 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_TAG "AAudioService"
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//#define LOG_NDEBUG 0
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#include <utils/Log.h>
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#include <sstream>
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//#include <time.h>
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//#include <pthread.h>
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#include <aaudio/AAudio.h>
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#include <mediautils/SchedulingPolicyService.h>
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#include <utils/String16.h>
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#include "binding/AAudioServiceMessage.h"
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#include "AAudioClientTracker.h"
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#include "AAudioEndpointManager.h"
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#include "AAudioService.h"
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#include "AAudioServiceStreamMMAP.h"
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#include "AAudioServiceStreamShared.h"
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#include "AAudioServiceStreamMMAP.h"
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#include "binding/IAAudioService.h"
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#include "ServiceUtilities.h"
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#include "utility/HandleTracker.h"
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using namespace android;
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using namespace aaudio;
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#define MAX_STREAMS_PER_PROCESS 8
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typedef enum
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{
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AAUDIO_HANDLE_TYPE_STREAM
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} aaudio_service_handle_type_t;
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static_assert(AAUDIO_HANDLE_TYPE_STREAM < HANDLE_TRACKER_MAX_TYPES, "Too many handle types.");
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android::AAudioService::AAudioService()
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: BnAAudioService() {
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mAudioClient.clientUid = getuid(); // TODO consider using geteuid()
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mAudioClient.clientPid = getpid();
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mAudioClient.packageName = String16("");
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AAudioClientTracker::getInstance().setAAudioService(this);
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}
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AAudioService::~AAudioService() {
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}
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status_t AAudioService::dump(int fd, const Vector<String16>& args) {
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std::string result;
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if (!dumpAllowed()) {
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std::stringstream ss;
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ss << "Permission denial: can't dump AAudioService from pid="
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<< IPCThreadState::self()->getCallingPid() << ", uid="
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<< IPCThreadState::self()->getCallingUid() << "\n";
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result = ss.str();
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ALOGW("%s", result.c_str());
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} else {
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result = mHandleTracker.dump()
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+ AAudioClientTracker::getInstance().dump()
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+ AAudioEndpointManager::getInstance().dump();
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}
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(void)write(fd, result.c_str(), result.size());
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return NO_ERROR;
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}
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void AAudioService::registerClient(const sp<IAAudioClient>& client) {
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pid_t pid = IPCThreadState::self()->getCallingPid();
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AAudioClientTracker::getInstance().registerClient(pid, client);
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}
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aaudio_handle_t AAudioService::openStream(const aaudio::AAudioStreamRequest &request,
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aaudio::AAudioStreamConfiguration &configurationOutput) {
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aaudio_result_t result = AAUDIO_OK;
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sp<AAudioServiceStreamBase> serviceStream;
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const AAudioStreamConfiguration &configurationInput = request.getConstantConfiguration();
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bool sharingModeMatchRequired = request.isSharingModeMatchRequired();
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aaudio_sharing_mode_t sharingMode = configurationInput.getSharingMode();
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// Enforce limit on client processes.
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pid_t pid = request.getProcessId();
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if (pid != mAudioClient.clientPid) {
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int32_t count = AAudioClientTracker::getInstance().getStreamCount(pid);
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if (count >= MAX_STREAMS_PER_PROCESS) {
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ALOGE("AAudioService::openStream(): exceeded max streams per process %d >= %d",
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count, MAX_STREAMS_PER_PROCESS);
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return AAUDIO_ERROR_UNAVAILABLE;
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}
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}
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if (sharingMode != AAUDIO_SHARING_MODE_EXCLUSIVE && sharingMode != AAUDIO_SHARING_MODE_SHARED) {
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ALOGE("AAudioService::openStream(): unrecognized sharing mode = %d", sharingMode);
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return AAUDIO_ERROR_ILLEGAL_ARGUMENT;
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}
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if (sharingMode == AAUDIO_SHARING_MODE_EXCLUSIVE) {
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// only trust audioserver for in service indication
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bool inService = false;
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if (mAudioClient.clientPid == IPCThreadState::self()->getCallingPid() &&
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mAudioClient.clientUid == IPCThreadState::self()->getCallingUid()) {
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inService = request.isInService();
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}
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serviceStream = new AAudioServiceStreamMMAP(mAudioClient, inService);
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result = serviceStream->open(request, configurationOutput);
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if (result != AAUDIO_OK) {
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// fall back to using a shared stream
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ALOGW("AAudioService::openStream(), could not open in EXCLUSIVE mode");
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serviceStream.clear();
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} else {
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configurationOutput.setSharingMode(AAUDIO_SHARING_MODE_EXCLUSIVE);
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}
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}
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// if SHARED requested or if EXCLUSIVE failed
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if (sharingMode == AAUDIO_SHARING_MODE_SHARED
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|| (serviceStream == nullptr && !sharingModeMatchRequired)) {
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serviceStream = new AAudioServiceStreamShared(*this);
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result = serviceStream->open(request, configurationOutput);
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configurationOutput.setSharingMode(AAUDIO_SHARING_MODE_SHARED);
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}
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if (result != AAUDIO_OK) {
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serviceStream.clear();
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ALOGE("AAudioService::openStream(): failed, return %d = %s",
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result, AAudio_convertResultToText(result));
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return result;
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} else {
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aaudio_handle_t handle = mHandleTracker.put(AAUDIO_HANDLE_TYPE_STREAM, serviceStream.get());
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if (handle < 0) {
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ALOGE("AAudioService::openStream(): handle table full");
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serviceStream->close();
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serviceStream.clear();
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} else {
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ALOGD("AAudioService::openStream(): handle = 0x%08X", handle);
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serviceStream->setHandle(handle);
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pid_t pid = request.getProcessId();
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AAudioClientTracker::getInstance().registerClientStream(pid, serviceStream);
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}
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return handle;
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}
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}
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aaudio_result_t AAudioService::closeStream(aaudio_handle_t streamHandle) {
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// Check permission and ownership first.
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sp<AAudioServiceStreamBase> serviceStream = convertHandleToServiceStream(streamHandle);
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if (serviceStream == nullptr) {
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ALOGE("AAudioService::startStream(), illegal stream handle = 0x%0x", streamHandle);
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return AAUDIO_ERROR_INVALID_HANDLE;
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}
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ALOGD("AAudioService.closeStream(0x%08X)", streamHandle);
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// Remove handle from tracker so that we cannot look up the raw address any more.
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serviceStream = (AAudioServiceStreamBase *)
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mHandleTracker.remove(AAUDIO_HANDLE_TYPE_STREAM,
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streamHandle);
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if (serviceStream != nullptr) {
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serviceStream->close();
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pid_t pid = serviceStream->getOwnerProcessId();
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AAudioClientTracker::getInstance().unregisterClientStream(pid, serviceStream);
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return AAUDIO_OK;
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}
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return AAUDIO_ERROR_INVALID_HANDLE;
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}
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AAudioServiceStreamBase *AAudioService::convertHandleToServiceStream(
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aaudio_handle_t streamHandle) const {
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AAudioServiceStreamBase *serviceStream = (AAudioServiceStreamBase *)
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mHandleTracker.get(AAUDIO_HANDLE_TYPE_STREAM, (aaudio_handle_t)streamHandle);
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if (serviceStream != nullptr) {
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// Only allow owner or the aaudio service to access the stream.
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const uid_t callingUserId = IPCThreadState::self()->getCallingUid();
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const uid_t ownerUserId = serviceStream->getOwnerUserId();
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bool callerOwnsIt = callingUserId == ownerUserId;
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bool serverCalling = callingUserId == mAudioClient.clientUid;
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bool serverOwnsIt = ownerUserId == mAudioClient.clientUid;
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bool allowed = callerOwnsIt || serverCalling || serverOwnsIt;
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if (!allowed) {
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ALOGE("AAudioService: calling uid %d cannot access stream 0x%08X owned by %d",
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callingUserId, streamHandle, ownerUserId);
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serviceStream = nullptr;
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}
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}
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return serviceStream;
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}
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aaudio_result_t AAudioService::getStreamDescription(
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aaudio_handle_t streamHandle,
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aaudio::AudioEndpointParcelable &parcelable) {
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AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
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if (serviceStream == nullptr) {
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ALOGE("AAudioService::getStreamDescription(), illegal stream handle = 0x%0x", streamHandle);
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return AAUDIO_ERROR_INVALID_HANDLE;
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}
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aaudio_result_t result = serviceStream->getDescription(parcelable);
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// parcelable.dump();
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return result;
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}
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aaudio_result_t AAudioService::startStream(aaudio_handle_t streamHandle) {
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AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
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if (serviceStream == nullptr) {
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ALOGE("AAudioService::startStream(), illegal stream handle = 0x%0x", streamHandle);
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return AAUDIO_ERROR_INVALID_HANDLE;
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}
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aaudio_result_t result = serviceStream->start();
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return result;
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}
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aaudio_result_t AAudioService::pauseStream(aaudio_handle_t streamHandle) {
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AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
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if (serviceStream == nullptr) {
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ALOGE("AAudioService::pauseStream(), illegal stream handle = 0x%0x", streamHandle);
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return AAUDIO_ERROR_INVALID_HANDLE;
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}
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aaudio_result_t result = serviceStream->pause();
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return result;
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}
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aaudio_result_t AAudioService::stopStream(aaudio_handle_t streamHandle) {
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AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
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if (serviceStream == nullptr) {
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ALOGE("AAudioService::pauseStream(), illegal stream handle = 0x%0x", streamHandle);
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return AAUDIO_ERROR_INVALID_HANDLE;
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}
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aaudio_result_t result = serviceStream->stop();
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return result;
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}
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aaudio_result_t AAudioService::flushStream(aaudio_handle_t streamHandle) {
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AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
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if (serviceStream == nullptr) {
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ALOGE("AAudioService::flushStream(), illegal stream handle = 0x%0x", streamHandle);
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return AAUDIO_ERROR_INVALID_HANDLE;
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}
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return serviceStream->flush();
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}
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aaudio_result_t AAudioService::registerAudioThread(aaudio_handle_t streamHandle,
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pid_t clientThreadId,
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int64_t periodNanoseconds) {
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AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
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if (serviceStream == nullptr) {
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ALOGE("AAudioService::registerAudioThread(), illegal stream handle = 0x%0x", streamHandle);
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return AAUDIO_ERROR_INVALID_HANDLE;
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}
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if (serviceStream->getRegisteredThread() != AAudioServiceStreamBase::ILLEGAL_THREAD_ID) {
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ALOGE("AAudioService::registerAudioThread(), thread already registered");
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return AAUDIO_ERROR_INVALID_STATE;
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}
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const pid_t ownerPid = IPCThreadState::self()->getCallingPid(); // TODO review
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serviceStream->setRegisteredThread(clientThreadId);
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int err = android::requestPriority(ownerPid, clientThreadId,
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DEFAULT_AUDIO_PRIORITY, true /* isForApp */);
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if (err != 0){
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ALOGE("AAudioService::registerAudioThread(%d) failed, errno = %d, priority = %d",
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clientThreadId, errno, DEFAULT_AUDIO_PRIORITY);
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return AAUDIO_ERROR_INTERNAL;
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} else {
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return AAUDIO_OK;
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}
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}
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aaudio_result_t AAudioService::unregisterAudioThread(aaudio_handle_t streamHandle,
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pid_t clientThreadId) {
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AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
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if (serviceStream == nullptr) {
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ALOGE("AAudioService::unregisterAudioThread(), illegal stream handle = 0x%0x",
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streamHandle);
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return AAUDIO_ERROR_INVALID_HANDLE;
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}
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if (serviceStream->getRegisteredThread() != clientThreadId) {
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ALOGE("AAudioService::unregisterAudioThread(), wrong thread");
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return AAUDIO_ERROR_ILLEGAL_ARGUMENT;
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}
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serviceStream->setRegisteredThread(0);
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return AAUDIO_OK;
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}
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aaudio_result_t AAudioService::startClient(aaudio_handle_t streamHandle,
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const android::AudioClient& client,
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audio_port_handle_t *clientHandle) {
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AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
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if (serviceStream == nullptr) {
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ALOGE("AAudioService::startClient(), illegal stream handle = 0x%0x",
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streamHandle);
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return AAUDIO_ERROR_INVALID_HANDLE;
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}
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return serviceStream->startClient(client, clientHandle);
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}
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aaudio_result_t AAudioService::stopClient(aaudio_handle_t streamHandle,
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audio_port_handle_t clientHandle) {
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AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
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if (serviceStream == nullptr) {
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ALOGE("AAudioService::stopClient(), illegal stream handle = 0x%0x",
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streamHandle);
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return AAUDIO_ERROR_INVALID_HANDLE;
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}
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return serviceStream->stopClient(clientHandle);
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}
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