1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "AAudioService"
18//#define LOG_NDEBUG 0
19#include <utils/Log.h>
20
21//#include <time.h>
22//#include <pthread.h>
23
24#include <aaudio/AAudio.h>
25#include <mediautils/SchedulingPolicyService.h>
26#include <utils/String16.h>
27
28#include "binding/AAudioServiceMessage.h"
29#include "AAudioService.h"
30#include "AAudioServiceStreamMMAP.h"
31#include "AAudioServiceStreamShared.h"
32#include "AAudioServiceStreamMMAP.h"
33#include "binding/IAAudioService.h"
34#include "utility/HandleTracker.h"
35
36using namespace android;
37using namespace aaudio;
38
39typedef enum
40{
41    AAUDIO_HANDLE_TYPE_STREAM
42} aaudio_service_handle_type_t;
43static_assert(AAUDIO_HANDLE_TYPE_STREAM < HANDLE_TRACKER_MAX_TYPES, "Too many handle types.");
44
45android::AAudioService::AAudioService()
46    : BnAAudioService() {
47}
48
49AAudioService::~AAudioService() {
50}
51
52aaudio_handle_t AAudioService::openStream(const aaudio::AAudioStreamRequest &request,
53                                          aaudio::AAudioStreamConfiguration &configurationOutput) {
54    aaudio_result_t result = AAUDIO_OK;
55    AAudioServiceStreamBase *serviceStream = nullptr;
56    const AAudioStreamConfiguration &configurationInput = request.getConstantConfiguration();
57    bool sharingModeMatchRequired = request.isSharingModeMatchRequired();
58    aaudio_sharing_mode_t sharingMode = configurationInput.getSharingMode();
59
60    if (sharingMode != AAUDIO_SHARING_MODE_EXCLUSIVE && sharingMode != AAUDIO_SHARING_MODE_SHARED) {
61        ALOGE("AAudioService::openStream(): unrecognized sharing mode = %d", sharingMode);
62        return AAUDIO_ERROR_ILLEGAL_ARGUMENT;
63    }
64
65    if (sharingMode == AAUDIO_SHARING_MODE_EXCLUSIVE) {
66        serviceStream = new AAudioServiceStreamMMAP();
67        result = serviceStream->open(request, configurationOutput);
68        if (result != AAUDIO_OK) {
69            // fall back to using a shared stream
70            ALOGD("AAudioService::openStream(), EXCLUSIVE mode failed");
71            delete serviceStream;
72            serviceStream = nullptr;
73        } else {
74            configurationOutput.setSharingMode(AAUDIO_SHARING_MODE_EXCLUSIVE);
75        }
76    }
77
78    // if SHARED requested or if EXCLUSIVE failed
79    if (sharingMode == AAUDIO_SHARING_MODE_SHARED
80         || (serviceStream == nullptr && !sharingModeMatchRequired)) {
81        serviceStream =  new AAudioServiceStreamShared(*this);
82        result = serviceStream->open(request, configurationOutput);
83        configurationOutput.setSharingMode(AAUDIO_SHARING_MODE_SHARED);
84    }
85
86    if (result != AAUDIO_OK) {
87        delete serviceStream;
88        ALOGE("AAudioService::openStream(): failed, return %d", result);
89        return result;
90    } else {
91        aaudio_handle_t handle = mHandleTracker.put(AAUDIO_HANDLE_TYPE_STREAM, serviceStream);
92        ALOGV("AAudioService::openStream(): handle = 0x%08X", handle);
93        if (handle < 0) {
94            ALOGE("AAudioService::openStream(): handle table full");
95            delete serviceStream;
96        }
97        return handle;
98    }
99}
100
101aaudio_result_t AAudioService::closeStream(aaudio_handle_t streamHandle) {
102    AAudioServiceStreamBase *serviceStream = (AAudioServiceStreamBase *)
103            mHandleTracker.remove(AAUDIO_HANDLE_TYPE_STREAM,
104                                  streamHandle);
105    ALOGV("AAudioService.closeStream(0x%08X)", streamHandle);
106    if (serviceStream != nullptr) {
107        serviceStream->close();
108        delete serviceStream;
109        return AAUDIO_OK;
110    }
111    return AAUDIO_ERROR_INVALID_HANDLE;
112}
113
114AAudioServiceStreamBase *AAudioService::convertHandleToServiceStream(
115        aaudio_handle_t streamHandle) const {
116    return (AAudioServiceStreamBase *) mHandleTracker.get(AAUDIO_HANDLE_TYPE_STREAM,
117                              (aaudio_handle_t)streamHandle);
118}
119
120aaudio_result_t AAudioService::getStreamDescription(
121                aaudio_handle_t streamHandle,
122                aaudio::AudioEndpointParcelable &parcelable) {
123    AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
124    if (serviceStream == nullptr) {
125        ALOGE("AAudioService::getStreamDescription(), illegal stream handle = 0x%0x", streamHandle);
126        return AAUDIO_ERROR_INVALID_HANDLE;
127    }
128    aaudio_result_t result = serviceStream->getDescription(parcelable);
129    // parcelable.dump();
130    return result;
131}
132
133aaudio_result_t AAudioService::startStream(aaudio_handle_t streamHandle) {
134    AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
135    if (serviceStream == nullptr) {
136        ALOGE("AAudioService::startStream(), illegal stream handle = 0x%0x", streamHandle);
137        return AAUDIO_ERROR_INVALID_HANDLE;
138    }
139    aaudio_result_t result = serviceStream->start();
140    return result;
141}
142
143aaudio_result_t AAudioService::pauseStream(aaudio_handle_t streamHandle) {
144    AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
145    if (serviceStream == nullptr) {
146        ALOGE("AAudioService::pauseStream(), illegal stream handle = 0x%0x", streamHandle);
147        return AAUDIO_ERROR_INVALID_HANDLE;
148    }
149    aaudio_result_t result = serviceStream->pause();
150    return result;
151}
152
153aaudio_result_t AAudioService::stopStream(aaudio_handle_t streamHandle) {
154    AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
155    if (serviceStream == nullptr) {
156        ALOGE("AAudioService::pauseStream(), illegal stream handle = 0x%0x", streamHandle);
157        return AAUDIO_ERROR_INVALID_HANDLE;
158    }
159    aaudio_result_t result = serviceStream->stop();
160    return result;
161}
162
163aaudio_result_t AAudioService::flushStream(aaudio_handle_t streamHandle) {
164    AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
165    if (serviceStream == nullptr) {
166        ALOGE("AAudioService::flushStream(), illegal stream handle = 0x%0x", streamHandle);
167        return AAUDIO_ERROR_INVALID_HANDLE;
168    }
169    return serviceStream->flush();
170}
171
172aaudio_result_t AAudioService::registerAudioThread(aaudio_handle_t streamHandle,
173                                                         pid_t clientProcessId,
174                                                         pid_t clientThreadId,
175                                                         int64_t periodNanoseconds) {
176    AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
177    if (serviceStream == nullptr) {
178        ALOGE("AAudioService::registerAudioThread(), illegal stream handle = 0x%0x", streamHandle);
179        return AAUDIO_ERROR_INVALID_HANDLE;
180    }
181    if (serviceStream->getRegisteredThread() != AAudioServiceStreamBase::ILLEGAL_THREAD_ID) {
182        ALOGE("AAudioService::registerAudioThread(), thread already registered");
183        return AAUDIO_ERROR_INVALID_STATE;
184    }
185    serviceStream->setRegisteredThread(clientThreadId);
186    int err = android::requestPriority(clientProcessId, clientThreadId,
187                                       DEFAULT_AUDIO_PRIORITY, true /* isForApp */);
188    if (err != 0){
189        ALOGE("AAudioService::registerAudioThread() failed, errno = %d, priority = %d",
190              errno, DEFAULT_AUDIO_PRIORITY);
191        return AAUDIO_ERROR_INTERNAL;
192    } else {
193        return AAUDIO_OK;
194    }
195}
196
197aaudio_result_t AAudioService::unregisterAudioThread(aaudio_handle_t streamHandle,
198                                                     pid_t clientProcessId,
199                                                     pid_t clientThreadId) {
200    AAudioServiceStreamBase *serviceStream = convertHandleToServiceStream(streamHandle);
201    if (serviceStream == nullptr) {
202        ALOGE("AAudioService::unregisterAudioThread(), illegal stream handle = 0x%0x",
203              streamHandle);
204        return AAUDIO_ERROR_INVALID_HANDLE;
205    }
206    if (serviceStream->getRegisteredThread() != clientThreadId) {
207        ALOGE("AAudioService::unregisterAudioThread(), wrong thread");
208        return AAUDIO_ERROR_ILLEGAL_ARGUMENT;
209    }
210    serviceStream->setRegisteredThread(0);
211    return AAUDIO_OK;
212}
213