1 /*
2 * Copyright (C) 2014 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 "ATVAudioPolicyManager"
18 //#define LOG_NDEBUG 0
19 #include <media/AudioParameter.h>
20 #include <media/mediarecorder.h>
21 #include <utils/Log.h>
22 #include <utils/String16.h>
23 #include <utils/String8.h>
24 #include <utils/StrongPointer.h>
25
26 #include "AudioHardwareOutput.h"
27 #include "ATVAudioPolicyManager.h"
28
29 #ifdef REMOTE_CONTROL_INTERFACE
30 #include <IRemoteControlService.h>
31 #endif
32
33
34 namespace android {
35 extern AudioHardwareOutput gAudioHardwareOutput;
36
37 // ----------------------------------------------------------------------------
38 // Common audio policy manager code is implemented in AudioPolicyManager class
39 // ----------------------------------------------------------------------------
40
41 // --- class factory
42
43
createAudioPolicyManager(AudioPolicyClientInterface * clientInterface)44 extern "C" AudioPolicyInterface* createAudioPolicyManager(
45 AudioPolicyClientInterface *clientInterface)
46 {
47 return new ATVAudioPolicyManager(clientInterface);
48 }
49
destroyAudioPolicyManager(AudioPolicyInterface * interface)50 extern "C" void destroyAudioPolicyManager(AudioPolicyInterface *interface)
51 {
52 delete interface;
53 }
54
ATVAudioPolicyManager(AudioPolicyClientInterface * clientInterface)55 ATVAudioPolicyManager::ATVAudioPolicyManager(
56 AudioPolicyClientInterface *clientInterface)
57 : AudioPolicyManager(clientInterface), mForceSubmixInputSelection(false)
58 {
59 }
60
computeVolume(audio_stream_type_t stream,int index,audio_devices_t device)61 float ATVAudioPolicyManager::computeVolume(audio_stream_type_t stream,
62 int index,
63 audio_devices_t device)
64 {
65 // We only use master volume, so all audio flinger streams
66 // should be set to maximum
67 (void)stream;
68 (void)index;
69 (void)device;
70 return 0.0; // no attenuation == 0.0dB
71 }
72
setDeviceConnectionState(audio_devices_t device,audio_policy_dev_state_t state,const char * device_address,const char * device_name)73 status_t ATVAudioPolicyManager::setDeviceConnectionState(audio_devices_t device,
74 audio_policy_dev_state_t state,
75 const char *device_address,
76 const char *device_name)
77 {
78 audio_devices_t tmp = AUDIO_DEVICE_NONE;;
79 ALOGE("setDeviceConnectionState %08x %x %s", device, state,
80 device_address ? device_address : "(null)");
81
82 // If the input device is the remote submix and an address starting with "force=" was
83 // specified, enable "force=1" / disable "force=0" the forced selection of the remote submix
84 // input device over hardware input devices (e.g RemoteControl).
85 if (device == AUDIO_DEVICE_IN_REMOTE_SUBMIX && device_address) {
86 AudioParameter parameters = AudioParameter(String8(device_address));
87 int forceValue;
88 if (parameters.getInt(String8("force"), forceValue) == OK) {
89 mForceSubmixInputSelection = forceValue != 0;
90 }
91 }
92
93 if (audio_is_output_device(device)) {
94 switch (state) {
95 case AUDIO_POLICY_DEVICE_STATE_AVAILABLE:
96 tmp = mAvailableOutputDevices.types() | device;
97 break;
98
99 case AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE:
100 tmp = mAvailableOutputDevices.types() & ~device;
101 break;
102 default:
103 ALOGE("setDeviceConnectionState() invalid state: %x", state);
104 return BAD_VALUE;
105 }
106
107 gAudioHardwareOutput.updateRouting(tmp);
108 tmp = mAvailableOutputDevices.types();
109 }
110
111 status_t ret = 0;
112 if (device != AUDIO_DEVICE_IN_REMOTE_SUBMIX) {
113 ret = AudioPolicyManager::setDeviceConnectionState(
114 device, state, device_address, device_name);
115 }
116
117 if (audio_is_output_device(device)) {
118 if (tmp != mAvailableOutputDevices.types())
119 gAudioHardwareOutput.updateRouting(mAvailableOutputDevices.types());
120 }
121
122 return ret;
123 }
124
getDeviceForInputSource(audio_source_t inputSource)125 audio_devices_t ATVAudioPolicyManager::getDeviceForInputSource(audio_source_t inputSource)
126 {
127 uint32_t device = AUDIO_DEVICE_NONE;
128 bool usePhysRemote = true;
129 const audio_devices_t availableDeviceTypes = mAvailableInputDevices.types() &
130 ~AUDIO_DEVICE_BIT_IN;
131
132 if (inputSource == AUDIO_SOURCE_VOICE_RECOGNITION ||
133 inputSource == AUDIO_SOURCE_UNPROCESSED) {
134 #ifdef REMOTE_CONTROL_INTERFACE
135 ALOGI("Using REMOTE_CONTROL_INTERFACE.");
136 // Check if remote is actually connected or we should move on
137 sp<IRemoteControlService> service = IRemoteControlService::getInstance();
138 if (service == NULL) {
139 ALOGV("getDeviceForInputSource No RemoteControl service detected, ignoring");
140 usePhysRemote = false;
141 } else if (!service->hasActiveRemote()) {
142 if (mForceSubmixInputSelection == false && service->hasConnectedRemotes()) {
143 ALOGV("getDeviceForInputSource connected remote and submix not forced");
144 usePhysRemote = true;
145 } else {
146 ALOGV("getDeviceForInputSource No active connected device, passing onto submix");
147 usePhysRemote = false;
148 }
149 }
150 #endif
151 ALOGV("getDeviceForInputSource %s %s", usePhysRemote ? "use physical" : "",
152 mForceSubmixInputSelection ? "use virtual" : "");
153 if (availableDeviceTypes & AUDIO_DEVICE_IN_WIRED_HEADSET &&
154 usePhysRemote) {
155 // User a wired headset (physical remote) if available, connected and active
156 ALOGV("Wired Headset available");
157 device = AUDIO_DEVICE_IN_WIRED_HEADSET;
158 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_REMOTE_SUBMIX &&
159 mForceSubmixInputSelection) {
160 // REMOTE_SUBMIX should always be avaible, let's make sure it's being forced at the moment
161 ALOGV("Virtual remote available");
162 device = AUDIO_DEVICE_IN_REMOTE_SUBMIX;
163 } else if (availableDeviceTypes & AUDIO_DEVICE_IN_USB_DEVICE) {
164 ALOGV("Use USB audio input");
165 device = AUDIO_DEVICE_IN_USB_DEVICE;
166 }
167 } else if ((availableDeviceTypes & AUDIO_DEVICE_IN_REMOTE_SUBMIX) &&
168 (inputSource == AUDIO_SOURCE_REMOTE_SUBMIX)) {
169 device = AUDIO_DEVICE_IN_REMOTE_SUBMIX;
170 }
171
172 ALOGV("getDeviceForInputSource() input source %d, device %08x", inputSource, device);
173 return device;
174 }
175
176 } // namespace android
177