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authorMisael Lopez Cruz2013-10-27 10:04:50 -0500
committerGerrit Code Review2013-11-01 19:02:10 -0500
commit9c25fe1bb8ab3974b69bcc21930699faf05b365d (patch)
treefeb2a1831fba539a5e1aa63b552816f78363ad4f
parent5aadbddedac5f56c83535c45c6c940ef67c96b5d (diff)
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audio: policy: Add initial implementation
Add initial implementation of the multizone audio policy and also the regular audio policy. Change-Id: Iacc468f5c6210417212b7b9dbe5de7b883a9ee9d Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>
Diffstat
-rw-r--r--audio/policy/Android.mk25
-rw-r--r--audio/policy/legacy/Android.mk45
-rw-r--r--audio/policy/legacy/AudioPolicyManager.cpp30
-rw-r--r--audio/policy/legacy/AudioPolicyManager.h33
-rw-r--r--audio/policy/legacy/TIAudioPolicyManager.cpp39
-rw-r--r--audio/policy/multizone/Android.mk49
-rw-r--r--audio/policy/multizone/AudioPolicyManager.cpp3421
-rw-r--r--audio/policy/multizone/AudioPolicyManager.h778
-rw-r--r--audio/policy/multizone/AudioPolicyParser.cpp728
-rw-r--r--audio/policy/multizone/AudioPolicyParser.h136
-rw-r--r--audio/policy/multizone/TIAudioPolicyManager.cpp39
11 files changed, 5323 insertions, 0 deletions
diff --git a/audio/policy/Android.mk b/audio/policy/Android.mk
new file mode 100644
index 0000000..ee27817
--- /dev/null
+++ b/audio/policy/Android.mk
@@ -0,0 +1,25 @@
1# Copyright (C) 2013 Texas Instruments
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7# http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14
15LOCAL_PATH := $(call my-dir)
16
17include $(CLEAR_VARS)
18
19ifeq ($(OMAP_MULTIZONE_AUDIO),true)
20# Multizone Audio Policy
21include $(LOCAL_PATH)/multizone/Android.mk
22else
23# Legacy Audio Policy (single output, stock policy)
24include $(LOCAL_PATH)/legacy/Android.mk
25endif
diff --git a/audio/policy/legacy/Android.mk b/audio/policy/legacy/Android.mk
new file mode 100644
index 0000000..ffea52e
--- /dev/null
+++ b/audio/policy/legacy/Android.mk
@@ -0,0 +1,45 @@
1# Copyright (C) 2013 Texas Instruments
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7# http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14
15LOCAL_PATH := $(call my-dir)
16
17# --------------------------------
18# Multizone Audio Policy Manager
19# --------------------------------
20
21include $(CLEAR_VARS)
22
23LOCAL_MODULE := libaudiopolicy_ti_legacy
24LOCAL_MODULE_TAGS := optional
25LOCAL_SRC_FILES := AudioPolicyManager.cpp
26LOCAL_WHOLE_STATIC_LIBRARIES := libaudiopolicy_legacy
27
28include $(BUILD_STATIC_LIBRARY)
29
30
31# -----------------
32# TI Audio Policy
33# -----------------
34
35include $(CLEAR_VARS)
36
37LOCAL_MODULE := audio_policy.$(TARGET_BOARD_PLATFORM)
38LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw
39LOCAL_MODULE_TAGS := optional
40LOCAL_SRC_FILES := TIAudioPolicyManager.cpp
41LOCAL_SHARED_LIBRARIES := libcutils libutils liblog
42LOCAL_STATIC_LIBRARIES := libmedia_helper
43LOCAL_WHOLE_STATIC_LIBRARIES := libaudiopolicy_ti_legacy
44
45include $(BUILD_SHARED_LIBRARY)
diff --git a/audio/policy/legacy/AudioPolicyManager.cpp b/audio/policy/legacy/AudioPolicyManager.cpp
new file mode 100644
index 0000000..60c53a6
--- /dev/null
+++ b/audio/policy/legacy/AudioPolicyManager.cpp
@@ -0,0 +1,30 @@
1/*
2 * Copyright (C) 2013 Texas Instruments
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#include "AudioPolicyManager.h"
18
19namespace android_audio_legacy {
20
21AudioPolicyManager::AudioPolicyManager(AudioPolicyClientInterface *clientInterface)
22 : AudioPolicyManagerBase(clientInterface)
23{
24}
25
26AudioPolicyManager::~AudioPolicyManager()
27{
28}
29
30} // namespace android_audio_legacy
diff --git a/audio/policy/legacy/AudioPolicyManager.h b/audio/policy/legacy/AudioPolicyManager.h
new file mode 100644
index 0000000..65a31af
--- /dev/null
+++ b/audio/policy/legacy/AudioPolicyManager.h
@@ -0,0 +1,33 @@
1/*
2 * Copyright (C) 2013 Texas Instruments
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#ifndef _POLICY_LEGACY_AUDIOPOLICYMANAGER_H_
18#define _POLICY_LEGACY_AUDIOPOLICYMANAGER_H_
19
20#include <hardware_legacy/AudioPolicyManagerBase.h>
21
22namespace android_audio_legacy {
23
24class AudioPolicyManager: public AudioPolicyManagerBase
25{
26 public:
27 AudioPolicyManager(AudioPolicyClientInterface *clientInterface);
28 virtual ~AudioPolicyManager();
29};
30
31} // namespace android_audio_legacy
32
33#endif // _POLICY_LEGACY_AUDIOPOLICYMANAGER_H_
diff --git a/audio/policy/legacy/TIAudioPolicyManager.cpp b/audio/policy/legacy/TIAudioPolicyManager.cpp
new file mode 100644
index 0000000..43c0707
--- /dev/null
+++ b/audio/policy/legacy/TIAudioPolicyManager.cpp
@@ -0,0 +1,39 @@
1/*
2 * Copyright (C) 2013 Texas Instruments
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 * This module is based on libhardware_legacy implementation.
17 *
18 */
19
20#define LOG_TAG "TIAudioPolicyManager"
21//#define LOG_NDEBUG 0
22
23#include "AudioPolicyManager.h"
24
25namespace android_audio_legacy {
26
27extern "C" AudioPolicyInterface* createAudioPolicyManager(AudioPolicyClientInterface *clientInterface)
28{
29 ALOGI("Creating TI AudioPolicyManager");
30 return new AudioPolicyManager(clientInterface);
31}
32
33extern "C" void destroyAudioPolicyManager(AudioPolicyInterface *interface)
34{
35 ALOGI("Destroying TI AudioPolicyManager");
36 delete interface;
37}
38
39} // namespace android
diff --git a/audio/policy/multizone/Android.mk b/audio/policy/multizone/Android.mk
new file mode 100644
index 0000000..06abcb3
--- /dev/null
+++ b/audio/policy/multizone/Android.mk
@@ -0,0 +1,49 @@
1# Copyright (C) 2013 Texas Instruments
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7# http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14
15LOCAL_PATH := $(call my-dir)
16
17# --------------------------------
18# Multizone Audio Policy Manager
19# --------------------------------
20
21include $(CLEAR_VARS)
22
23LOCAL_MODULE := libaudiopolicy_ti_multizone
24LOCAL_MODULE_TAGS := optional
25LOCAL_SRC_FILES := \
26 AudioPolicyManager.cpp \
27 AudioPolicyParser.cpp
28LOCAL_SHARED_LIBRARIES := libcutils libutils liblog
29LOCAL_STATIC_LIBRARIES := libmedia_helper
30LOCAL_WHOLE_STATIC_LIBRARIES := libaudiopolicy_legacy_base
31
32include $(BUILD_STATIC_LIBRARY)
33
34
35# -----------------
36# TI Audio Policy
37# -----------------
38
39include $(CLEAR_VARS)
40
41LOCAL_MODULE := audio_policy.$(TARGET_BOARD_PLATFORM)
42LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw
43LOCAL_MODULE_TAGS := optional
44LOCAL_SRC_FILES := TIAudioPolicyManager.cpp
45LOCAL_SHARED_LIBRARIES := libcutils libutils liblog
46LOCAL_STATIC_LIBRARIES := libmedia_helper
47LOCAL_WHOLE_STATIC_LIBRARIES := libaudiopolicy_ti_multizone
48
49include $(BUILD_SHARED_LIBRARY)
diff --git a/audio/policy/multizone/AudioPolicyManager.cpp b/audio/policy/multizone/AudioPolicyManager.cpp
new file mode 100644
index 0000000..915cb72
--- /dev/null
+++ b/audio/policy/multizone/AudioPolicyManager.cpp
@@ -0,0 +1,3421 @@
1/*
2 * Copyright (C) 2013 Texas Instruments
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 * This module is based on libhardware_legacy implementation.
17 *
18 */
19
20#define LOG_TAG "AudioPolicyManager"
21#define LOG_NDEBUG 0
22
23//#define VERY_VERBOSE_LOGGING
24#ifdef VERY_VERBOSE_LOGGING
25#define ALOGVV ALOGV
26#else
27#define ALOGVV(a...) do { } while(0)
28#endif
29
30// A device mask for all audio input devices that are considered "virtual" when evaluating
31// active inputs in getActiveInput()
32#define APM_AUDIO_IN_DEVICE_VIRTUAL_ALL AUDIO_DEVICE_IN_REMOTE_SUBMIX
33// A device mask for all audio output devices that are considered "remote" when evaluating
34// active output devices in isStreamActiveRemotely()
35#define APM_AUDIO_OUT_DEVICE_REMOTE_ALL AUDIO_DEVICE_OUT_REMOTE_SUBMIX
36
37#include <cutils/properties.h>
38#include <utils/Log.h>
39#include <hardware/audio_effect.h>
40#include <hardware/audio.h>
41#include <math.h>
42#include <hardware_legacy/audio_policy_conf.h>
43
44#include "AudioPolicyManager.h"
45
46namespace android_audio_legacy {
47
48// ----------------------------------------------------------------------------
49// AudioPolicyInterface implementation
50// ----------------------------------------------------------------------------
51
52status_t AudioPolicyManager::setDeviceConnectionState(audio_devices_t device,
53 AudioSystem::device_connection_state state,
54 const char *device_address)
55{
56 ALOGI("setDeviceConnectionState() device 0x%08x state %d address %s",
57 device, state, device_address);
58
59 // connect/disconnect only 1 device at a time
60 if (!audio_is_output_device(device) && !audio_is_input_device(device)) {
61 return BAD_VALUE;
62 }
63
64 if (strlen(device_address) >= MAX_DEVICE_ADDRESS_LEN) {
65 ALOGE("setDeviceConnectionState() invalid address: %s", device_address);
66 return BAD_VALUE;
67 }
68
69 // handle output devices
70 if (audio_is_output_device(device)) {
71
72 if (!mHasA2dp && audio_is_a2dp_device(device)) {
73 ALOGE("setDeviceConnectionState() invalid A2DP device: 0x%08x", device);
74 return BAD_VALUE;
75 }
76 if (!mHasUsb && audio_is_usb_device(device)) {
77 ALOGE("setDeviceConnectionState() invalid USB audio device: 0x%08x", device);
78 return BAD_VALUE;
79 }
80 if (!mHasRemoteSubmix && audio_is_remote_submix_device((audio_devices_t)device)) {
81 ALOGE("setDeviceConnectionState() invalid remote submix audio device: 0x%08x",
82 device);
83 return BAD_VALUE;
84 }
85
86 // HEADPHONE is mapped to a listening zone, discard its input
87 if (device == AUDIO_DEVICE_OUT_WIRED_HEADSET) {
88 device = AUDIO_DEVICE_OUT_WIRED_HEADPHONE;
89 }
90
91 switch (state) {
92
93 // handle output device connection
94 case AudioSystem::DEVICE_STATE_AVAILABLE: {
95 if (mAvailableOutputDevices & device) {
96 ALOGW("setDeviceConnectionState() device already connected 0x%08x", device);
97 return INVALID_OPERATION;
98 }
99
100 // register new device as available
101 ALOGV("setDeviceConnectionState() connecting device 0x%08x", device);
102 mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices | device);
103
104 if (mHasA2dp && audio_is_a2dp_device(device)) {
105 mA2dpDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
106 mA2dpSuspended = false;
107 } else if (audio_is_bluetooth_sco_device(device)) {
108 mScoDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
109 } else if (mHasUsb && audio_is_usb_device(device)) {
110 mUsbCardAndDevice = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
111 }
112
113 if ((device == AUDIO_DEVICE_OUT_WIRED_HEADPHONE) ||
114 (device == AUDIO_DEVICE_OUT_WIRED_HEADPHONE2)) {
115 ALOGV("setDeviceConnectionState() headphone inserted (0x%08x), unmuting",
116 device);
117 audio_io_handle_t output = findOutput(device);
118 AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
119 // Mute/unmute is done only if the heaphone is the only device
120 // handled by the output
121 if (output && (outputDesc->device() == device))
122 muteOutput(output, false);
123 }
124 } break;
125
126 // handle output device disconnection
127 case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
128 if (!(mAvailableOutputDevices & device)) {
129 ALOGW("setDeviceConnectionState() device not connected: 0x08%x", device);
130 return INVALID_OPERATION;
131 }
132
133 // remove device from available output devices
134 ALOGV("setDeviceConnectionState() disconnecting device 0x%08x", device);
135 mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices & ~device);
136
137 if (mHasA2dp && audio_is_a2dp_device(device)) {
138 mA2dpDeviceAddress = "";
139 mA2dpSuspended = false;
140 } else if (audio_is_bluetooth_sco_device(device)) {
141 mScoDeviceAddress = "";
142 } else if (mHasUsb && audio_is_usb_device(device)) {
143 mUsbCardAndDevice = "";
144 }
145 // not currently handling multiple simultaneous submixes: ignoring remote submix
146 // case and address
147
148 // HP1 and HP2 event don't cause the dynamic re-routing, just mute to
149 // prevent high-volume when the headphone is connected again
150 if ((device == AUDIO_DEVICE_OUT_WIRED_HEADPHONE) ||
151 (device == AUDIO_DEVICE_OUT_WIRED_HEADPHONE2)) {
152 ALOGV("setDeviceConnectionState() headphone removed (0x%08x), muting",
153 device);
154 audio_io_handle_t output = findOutput(device);
155 AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
156 // Mute/unmute is done only if the heaphone is the only device
157 // handled by the output
158 if (output && (outputDesc->device() == device))
159 muteOutput(output, true);
160 } else {
161 disconnectDevice(device);
162 }
163
164 } break;
165
166 default:
167 ALOGE("setDeviceConnectionState() invalid state: %x", state);
168 return BAD_VALUE;
169 }
170
171 checkA2dpSuspend();
172
173 // We don't do dynamic routing based on new devices being attached
174
175 // Also add its input device
176 if ((device == AUDIO_DEVICE_OUT_BLUETOOTH_SCO) ||
177 (device == AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET) ||
178 (device == AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT)) {
179 device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET;
180 } else {
181 return NO_ERROR;
182 }
183 }
184
185 // handle input devices
186 if (audio_is_input_device(device)) {
187
188 switch (state) {
189
190 // handle input device connection
191 case AudioSystem::DEVICE_STATE_AVAILABLE: {
192 if (mAvailableInputDevices & device) {
193 ALOGW("setDeviceConnectionState() device already connected: 0x%08x", device);
194 return INVALID_OPERATION;
195 }
196 ALOGV("setDeviceConnectionState() connecting device 0x%08x", device);
197 mAvailableInputDevices = mAvailableInputDevices | (device & ~AUDIO_DEVICE_BIT_IN);
198 } break;
199
200 // handle input device disconnection
201 case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
202 if (!(mAvailableInputDevices & device)) {
203 ALOGW("setDeviceConnectionState() device not connected: 0x%08x", device);
204 return INVALID_OPERATION;
205 }
206 ALOGV("setDeviceConnectionState() disconnecting device 0x%08x", device);
207 mAvailableInputDevices = (audio_devices_t) (mAvailableInputDevices & ~device);
208 } break;
209
210 default:
211 ALOGE("setDeviceConnectionState() invalid state: %x", state);
212 return BAD_VALUE;
213 }
214
215 audio_io_handle_t activeInput = getActiveInput();
216 if (activeInput != 0) {
217 AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput);
218 audio_devices_t newDevice = getDeviceForInputSource(inputDesc->mInputSource);
219 if ((newDevice != AUDIO_DEVICE_NONE) && (newDevice != inputDesc->mDevice)) {
220 ALOGV("setDeviceConnectionState() changing device from 0x%x to 0x%x for input %d",
221 inputDesc->mDevice, newDevice, activeInput);
222 inputDesc->mDevice = newDevice;
223 AudioParameter param = AudioParameter();
224 param.addInt(String8(AudioParameter::keyRouting), (int)newDevice);
225 mpClientInterface->setParameters(activeInput, param.toString());
226 }
227 }
228
229 return NO_ERROR;
230 }
231
232 ALOGW("setDeviceConnectionState() invalid device: %x", device);
233 return BAD_VALUE;
234}
235
236AudioSystem::device_connection_state
237AudioPolicyManager::getDeviceConnectionState(audio_devices_t device,
238 const char *device_address)
239{
240 AudioSystem::device_connection_state state = AudioSystem::DEVICE_STATE_UNAVAILABLE;
241 String8 address = String8(device_address);
242
243 if (audio_is_output_device(device)) {
244 if (device & mAvailableOutputDevices) {
245 if (audio_is_a2dp_device(device) &&
246 (!mHasA2dp || (address != "" && mA2dpDeviceAddress != address))) {
247 return state;
248 }
249 if (audio_is_bluetooth_sco_device(device) &&
250 address != "" && mScoDeviceAddress != address) {
251 return state;
252 }
253 if (audio_is_usb_device(device) &&
254 (!mHasUsb || (address != "" && mUsbCardAndDevice != address))) {
255 ALOGE("getDeviceConnectionState() invalid device: 0x%08x", device);
256 return state;
257 }
258 if (audio_is_remote_submix_device((audio_devices_t)device) && !mHasRemoteSubmix) {
259 return state;
260 }
261 state = AudioSystem::DEVICE_STATE_AVAILABLE;
262 }
263 } else if (audio_is_input_device(device)) {
264 if (device & mAvailableInputDevices) {
265 state = AudioSystem::DEVICE_STATE_AVAILABLE;
266 }
267 }
268
269 return state;
270}
271
272void AudioPolicyManager::setPhoneState(int state)
273{
274 ALOGV("setPhoneState() state %d", state);
275
276 if (state < 0 || state >= AudioSystem::NUM_MODES) {
277 ALOGW("setPhoneState() invalid state %d", state);
278 return;
279 }
280
281 if (state == mPhoneState ) {
282 ALOGW("setPhoneState() setting same state %d", state);
283 return;
284 }
285
286 // if leaving call state, handle special case of active streams
287 // pertaining to sonification strategy see handleIncallSonification()
288 if (isInCall()) {
289 ALOGV("setPhoneState() in call state management: new state is %d", state);
290 for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
291 handleIncallSonification(stream, false, true);
292 }
293 }
294
295 // store previous phone state for management of sonification strategy below
296 int oldState = mPhoneState;
297 mPhoneState = state;
298 bool force = false;
299
300 // are we entering or starting a call
301 if (!isStateInCall(oldState) && isStateInCall(state)) {
302 ALOGV(" Entering call in setPhoneState()");
303 // force routing command to audio hardware when starting a call
304 // even if no device change is needed
305 force = true;
306 } else if (isStateInCall(oldState) && !isStateInCall(state)) {
307 ALOGV(" Exiting call in setPhoneState()");
308 // force routing command to audio hardware when exiting a call
309 // even if no device change is needed
310 force = true;
311 } else if (isStateInCall(state) && (state != oldState)) {
312 ALOGV(" Switching between telephony and VoIP in setPhoneState()");
313 // force routing command to audio hardware when switching between telephony and VoIP
314 // even if no device change is needed
315 force = true;
316 }
317
318 checkA2dpSuspend();
319
320 // Restrict voice calls to cabin speakers
321 audio_devices_t device = getRefinedZoneDevices(AUDIO_ZONE_CABIN,
322 AudioSystem::VOICE_CALL);
323
324 // Set the voice call route in the audio hardware (primary output)
325 AudioParameter param = AudioParameter();
326 param.addInt(String8(AUDIO_PARAMETER_CALL_ROUTING), (int)device);
327 mpClientInterface->setParameters(mPrimaryOutput, param.toString());
328
329 // if entering in call state, handle special case of active streams
330 // pertaining to sonification strategy see handleIncallSonification()
331 if (isStateInCall(state)) {
332 ALOGV("setPhoneState() in call state management: new state is %d", state);
333 for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
334 handleIncallSonification(stream, true, true);
335 }
336 }
337}
338
339void AudioPolicyManager::setForceUse(AudioSystem::force_use usage,
340 AudioSystem::forced_config config)
341{
342 ALOGV("setForceUse() usage %d, config %d, mPhoneState %d",
343 usage, config, mPhoneState);
344
345 bool forceVolumeReeval = false;
346 switch(usage) {
347 case AudioSystem::FOR_COMMUNICATION:
348 if (config != AudioSystem::FORCE_SPEAKER &&
349 config != AudioSystem::FORCE_BT_SCO &&
350 config != AudioSystem::FORCE_NONE) {
351 ALOGW("setForceUse() invalid config %d for FOR_COMMUNICATION",
352 config);
353 return;
354 }
355 forceVolumeReeval = true;
356 mForceUse[usage] = config;
357 break;
358 case AudioSystem::FOR_MEDIA:
359 if (config != AudioSystem::FORCE_HEADPHONES &&
360 config != AudioSystem::FORCE_BT_A2DP &&
361 config != AudioSystem::FORCE_WIRED_ACCESSORY &&
362 config != AudioSystem::FORCE_ANALOG_DOCK &&
363 config != AudioSystem::FORCE_DIGITAL_DOCK &&
364 config != AudioSystem::FORCE_NONE &&
365 config != AudioSystem::FORCE_NO_BT_A2DP) {
366 ALOGW("setForceUse() invalid config %d for FOR_MEDIA", config);
367 return;
368 }
369 mForceUse[usage] = config;
370 break;
371 case AudioSystem::FOR_RECORD:
372 if (config != AudioSystem::FORCE_BT_SCO &&
373 config != AudioSystem::FORCE_WIRED_ACCESSORY &&
374 config != AudioSystem::FORCE_NONE) {
375 ALOGW("setForceUse() invalid config %d for FOR_RECORD", config);
376 return;
377 }
378 mForceUse[usage] = config;
379 break;
380 case AudioSystem::FOR_DOCK:
381 if (config != AudioSystem::FORCE_NONE &&
382 config != AudioSystem::FORCE_BT_CAR_DOCK &&
383 config != AudioSystem::FORCE_BT_DESK_DOCK &&
384 config != AudioSystem::FORCE_WIRED_ACCESSORY &&
385 config != AudioSystem::FORCE_ANALOG_DOCK &&
386 config != AudioSystem::FORCE_DIGITAL_DOCK) {
387 ALOGW("setForceUse() invalid config %d for FOR_DOCK", config);
388 }
389 forceVolumeReeval = true;
390 mForceUse[usage] = config;
391 break;
392 case AudioSystem::FOR_SYSTEM:
393 if (config != AudioSystem::FORCE_NONE &&
394 config != AudioSystem::FORCE_SYSTEM_ENFORCED) {
395 ALOGW("setForceUse() invalid config %d for FOR_SYSTEM", config);
396 }
397 forceVolumeReeval = true;
398 mForceUse[usage] = config;
399 break;
400 default:
401 ALOGW("setForceUse() invalid usage %d", usage);
402 break;
403 }
404
405 // Force use and force configs are not scalable for multiple outputs in
406 // automotive environments:
407 // - FOR_COMMUNICATION: phone call is routed through BT SCO to cabin
408 // speakers. The existing force configs don't cause any route update
409 // - FOR_MEDIA: there may be multiple outputs playing media streams, so
410 // the force config cannot be fairly associated with one of them.
411 // It's currently used only for FORCE_NONE and FORCE_NO_BT_A2DP.
412 // The latter will be handled at setDeviceConnectionState() when
413 // BT A2DP is disconnected.
414 // - FOR_DOCK: It's not applicable either as it refers to the Android
415 // device being docked
416 // - FOR_SYSTEM: Used for camera sound (shutter).
417 //
418 // The logic is kept not to disturb AudioService, but there won't be
419 // any actions taken.
420}
421
422AudioSystem::forced_config AudioPolicyManager::getForceUse(AudioSystem::force_use usage)
423{
424 return mForceUse[usage];
425}
426
427void AudioPolicyManager::setSystemProperty(const char* property, const char* value)
428{
429 ALOGV("setSystemProperty() property %s, value %s", property, value);
430}
431
432status_t AudioPolicyManager::setZoneDevices_l(audio_zones_t zone,
433 audio_devices_t devices)
434{
435 if (AudioSystem::popCount(zone) > 1) {
436 ALOGE("setZoneDevices() cannot set multiple zones simultaneously");
437 return BAD_VALUE;
438 }
439
440 if (devices == AUDIO_DEVICE_NONE) {
441 ALOGE("setZoneDevices() at least one device must be set per zone");
442 return BAD_VALUE;
443 }
444
445 // Devices must be owned by only one zone
446 for (size_t i = 0; i < mZoneDevices.size(); i++) {
447 if (zone != mZoneDevices.keyAt(i)) {
448 audio_devices_t common = devices & mZoneDevices.valueAt(i);
449 if (common) {
450 ALOGE("setZoneDevices_l() devices 0x%08x are already set in zone 0x%x",
451 common, mZoneDevices.keyAt(i));
452 return INVALID_OPERATION;
453 }
454 }
455 }
456
457 ALOGI("setZoneDevices_l() zone 0x%x set to devices 0x%08x", zone, devices);
458 mZoneDevices.replaceValueFor(zone, devices);
459
460 return NO_ERROR;
461}
462
463status_t AudioPolicyManager::setZoneDevices(audio_zones_t zone,
464 audio_devices_t devices)
465{
466 ALOGI("setZoneDevices() zone 0x%x devices 0x%08x", zone, devices);
467
468 // Attached devices are assigned to a zone and cannot be moved
469 audio_devices_t tmpDevices = getZoneDevices(zone) & ~devices;
470 if (tmpDevices & mAttachedOutputDevices) {
471 ALOGE("setZoneDevices() attached devices 0x%08x cannot be removed",
472 tmpDevices & mAttachedOutputDevices);
473 return INVALID_OPERATION;
474 }
475
476 // Reject devices that are not supported by the zone, as defined
477 // in the zone_affinity section of the audio_policy.conf file
478 tmpDevices = devices & ~getZoneSupportedDevices(zone);
479 if (tmpDevices) {
480 ALOGE("setZoneDevices() devices 0x%08x not supported in zone 0x%x",
481 tmpDevices, zone);
482 return INVALID_OPERATION;
483 }
484
485 // Update the devices in the listening zone descriptor
486 status_t status;
487 status = setZoneDevices_l(zone, devices);
488 if (status != NO_ERROR) {
489 return status;
490 }
491
492 // Sessions using the zone being set must update their device too
493 for (size_t i = 0; i < mSessions.size(); i++) {
494 SessionDescriptor *sessionDesc = mSessions.valueAt(i);
495 if (sessionDesc->zones() & zone) {
496 ALOGI("setZoneDevices() update session %u with new zone devices 0x%08x",
497 sessionDesc->sessionId(), devices);
498 setSessionZones(sessionDesc->sessionId(), sessionDesc->zones());
499 }
500 }
501
502 return NO_ERROR;
503}
504
505audio_devices_t AudioPolicyManager::getZoneDevices(audio_zones_t zones)
506{
507 audio_devices_t devices = AUDIO_DEVICE_NONE;
508
509 for (size_t i = 0; i < mZoneDevices.size(); i++) {
510 if (zones & mZoneDevices.keyAt(i)) {
511 devices |= mZoneDevices.valueAt(i);
512 }
513 }
514
515 ALOGV("getZoneDevices() zones 0x%x devices 0x%08x", zones, devices);
516
517 return devices;
518}
519
520status_t AudioPolicyManager::setSessionZones(int session, audio_zones_t zones)
521{
522 ALOGI("setSessionZones() session %d zones 0x%x", session, zones);
523
524 SessionDescriptor *sessionDesc;
525 ssize_t index = mSessions.indexOfKey(session);
526 if (index < 0) {
527 // Create an session desc entry with default output handle
528 ALOGV("setSessionZones() session %d hasn't been used yet", session);
529 sessionDesc = new SessionDescriptor(session, 0, zones, getZoneDevices(zones));
530 mSessions.add(session, sessionDesc);
531 } else {
532 ALOGV("setSessionZones() session %d zones updated", session);
533 sessionDesc = mSessions.valueAt(index);
534 audio_devices_t prevDevices = sessionDesc->devices();
535 sessionDesc->mZones = zones;
536 sessionDesc->mDevices = getZoneDevices(zones);
537
538 // Move tracks from previous to new devices if the output is already open
539 moveTracks(sessionDesc->mId, prevDevices, sessionDesc->devices());
540 }
541
542 return NO_ERROR;
543}
544
545audio_zones_t AudioPolicyManager::getSessionZones(int session)
546{
547 audio_zones_t zones;
548
549 ssize_t index = mSessions.indexOfKey(session);
550 if (index < 0) {
551 ALOGV("getSessionZones() session %d is not active", session);
552 zones = AUDIO_ZONE_NONE;
553 } else {
554 SessionDescriptor *sessionDesc = mSessions.valueAt(index);
555 zones = sessionDesc->zones();
556 ALOGV("getSessionZones() session %d zones 0x%x", session, zones);
557 }
558
559 return zones;
560}
561
562status_t AudioPolicyManager::setZoneVolume(audio_zones_t zone, float volume)
563{
564 ALOGI("setZoneVolume() zone 0x%x volume %f", zone, volume);
565
566 if (AudioSystem::popCount(zone) > 1) {
567 ALOGE("setZoneVolume() cannot set multiple zones simultaneously");
568 return BAD_VALUE;
569 }
570
571 if (!audio_is_output_zone(zone)) {
572 ALOGE("setZoneVolume() zone 0x%x is invalid", zone);
573 return BAD_VALUE;
574 }
575
576 if (volume < 0.0f || volume > 1.0f) {
577 ALOGE("setZoneVolume() volume %f is out of limits", volume);
578 return BAD_VALUE;
579 }
580
581 ssize_t index = mZoneVolume.indexOfKey(zone);
582 if (index < 0) {
583 ALOGE("setZoneVolume() zone 0x%x is not supported", zone);
584 return BAD_VALUE;
585 }
586
587 mZoneVolume.replaceValueAt(index, volume);
588
589 // Update the volumes of all sessions playing on the listening zone
590 // whose volume just changed
591 for (size_t i = 0; i < mSessions.size(); i++) {
592 SessionDescriptor *sessionDesc = mSessions.valueAt(i);
593 int session = sessionDesc->sessionId();
594
595 if (getSessionZones(session) & zone) {
596 float sessionVolume = sessionDesc->mVolume.valueFor(zone);
597 if (setSessionVolume_l(session, zone, sessionVolume) != NO_ERROR) {
598 ALOGE("setZoneVolume() couldn't to set volume for session %d on zone 0x%x",
599 session, zone);
600 }
601 }
602 }
603
604 return NO_ERROR;
605}
606
607float AudioPolicyManager::getZoneVolume(audio_zones_t zone)
608{
609 float zoneVolume = -1.0f;
610
611 if (AudioSystem::popCount(zone) > 1) {
612 ALOGE("getZoneVolume() cannot get multiple zones simultaneously");
613 return zoneVolume;
614 }
615
616 if (!audio_is_output_zone(zone)) {
617 ALOGE("getZoneVolume() zone 0x%x is invalid", zone);
618 return zoneVolume;
619 }
620
621 ssize_t index = mZoneVolume.indexOfKey(zone);
622 if (index < 0) {
623 ALOGE("getZoneVolume() zone 0x%x is not supported", zone);
624 return zoneVolume;
625 }
626
627 zoneVolume = mZoneVolume.valueAt(index);
628
629 ALOGV("getZoneVolume() zone 0x%x volume %f", zone, zoneVolume);
630
631 return zoneVolume;
632}
633
634status_t AudioPolicyManager::setSessionVolume_l(int session,
635 audio_zones_t zone,
636 float volume)
637{
638 SessionDescriptor *sessionDesc = mSessions.valueFor(session);
639 audio_io_handle_t output = sessionDesc->mId;
640 audio_zones_t activeZones = getSessionZones(session);
641
642 if (zone & activeZones) {
643 float zoneVolume = volume * mZoneVolume.valueFor(zone);
644
645 // Duplicating output sets the volume to the output(s) that is actually
646 // handling that zone
647 SortedVector<audio_io_handle_t> zoneOutputs;
648 findOutputsInZone(output, zone, zoneOutputs);
649 for (size_t i = 0; i < zoneOutputs.size(); i++) {
650 mpClientInterface->setZoneVolume(zoneOutputs.itemAt(i), session, zoneVolume);
651 }
652 }
653
654 return NO_ERROR;
655}
656
657status_t AudioPolicyManager::setSessionVolume(int session,
658 audio_zones_t zones,
659 float volume)
660{
661 ALOGI("setSessionVolume() session %d zones 0x%x volume %f",
662 session, zones, volume);
663
664 ssize_t index = mSessions.indexOfKey(session);
665 if (index < 0) {
666 ALOGE("setSessionVolume() session %d is not active", session);
667 return BAD_VALUE;
668 }
669
670 if (!audio_is_output_zones(zones)) {
671 ALOGE("setSessionVolume() zones 0x%x are not valid", zones);
672 return BAD_VALUE;
673 }
674
675 if (volume < 0.0f || volume > 1.0f) {
676 ALOGE("setSessionVolume() volume %f is out of limits", volume);
677 return BAD_VALUE;
678 }
679
680 SessionDescriptor *sessionDesc = mSessions.valueAt(index);
681
682 for (audio_zones_t zone = AUDIO_ZONE_LAST; zone & AUDIO_ZONE_ALL; zone >>= 1) {
683 audio_zones_t cur = zone & zones;
684 if (cur != AUDIO_ZONE_NONE) {
685 // The volume for the session takes into account the coarse per-zone
686 // volume as well
687 sessionDesc->mVolume.replaceValueFor(cur, volume);
688 float zoneVolume = mZoneVolume.valueFor(cur);
689
690 // Apply the calculated volume
691 ALOGV("setSessionVolume() session %d zone-vol %f session-vol %f final-vol %f",
692 session, zoneVolume, volume, zoneVolume * volume);
693 setSessionVolume_l(session, cur, volume);
694 }
695 }
696
697 return NO_ERROR;
698}
699
700float AudioPolicyManager::getSessionVolume(int session, audio_zones_t zone)
701{
702 float sessionVolume = -1.0f;
703
704 ssize_t index = mSessions.indexOfKey(session);
705 if (index < 0) {
706 ALOGE("getSessionVolume() session %d is not active", session);
707 return sessionVolume;
708 }
709
710 if (AudioSystem::popCount(zone) > 1) {
711 ALOGE("getSessionVolume() cannot get multiple zones simultaneously");
712 return sessionVolume;
713 }
714
715 if (!audio_is_output_zone(zone)) {
716 ALOGE("getSessionVolume() zone 0x%x is not valid", zone);
717 return sessionVolume;
718 }
719
720 SessionDescriptor *sessionDesc = mSessions.valueAt(index);
721 sessionVolume = sessionDesc->mVolume.valueFor(zone);
722
723 ALOGV("getSessionVolume() session %d volume %f", session, sessionVolume);
724
725 return sessionVolume;
726}
727
728audio_io_handle_t AudioPolicyManager::getOutput(AudioSystem::stream_type stream,
729 uint32_t samplingRate,
730 uint32_t format,
731 uint32_t channelMask,
732 AudioSystem::output_flags flags,
733 int session)
734{
735 ALOGI("getOutput() stream %d rate %d format %d channelMask %x flags %x session %d",
736 stream, samplingRate, format, channelMask, flags, session);
737
738 // Find the best zone for this session, based on explicit requests or
739 // predefined policy rules
740 selectZones(session, stream);
741
742 // selectZones() must have returned valid zone(s) and device(s) since the
743 // last selection mechanism is a fixed listening zone
744 ssize_t index = mSessions.indexOfKey(session);
745 if (index < 0) {
746 ALOGE("getOutput() policy failed to find a zone for session %d", session);
747 return 0;
748 }
749
750 audio_devices_t devices = getSessionDevices(session);
751 if (!devices) {
752 ALOGE("getOutput() unexpected null device for session %d", session);
753 return 0;
754 }
755
756 SessionDescriptor *sessionDesc = mSessions.valueAt(index);
757 audio_io_handle_t output = sessionDesc->mId;
758 AudioOutputDescriptor *outputDesc;
759
760 // Multiple devices could be handled by different outputs, populate a vector
761 // with the needed outputs for all requested devices
762 SortedVector<audio_io_handle_t> outputs;
763 while (devices) {
764 ALOGV("getOutput() search output(s) for devices 0x%08x flags 0x%08x", devices, flags);
765 if (needsDirectOuput(stream, samplingRate, format, channelMask, flags, devices)) {
766 output = openOutput(devices, samplingRate, format, channelMask,
767 AUDIO_OUTPUT_FLAG_DIRECT);
768 } else {
769 output = openOutput(devices, samplingRate, format, channelMask,
770 (audio_output_flags_t)flags);
771 }
772 if (output) {
773 outputs.add(output);
774 outputDesc = mOutputs.valueFor(output);
775 devices &= ~outputDesc->device();
776
777 // Try opening a direct output for multichannel tracks. One of the two
778 // outputs for their associated device(s) will be closed when refining
779 // outputs (see refineOutputs())
780 if (!outputDesc->isDirectOutput() &&
781 (AudioSystem::popCount(channelMask) > 2) &&
782 (outputDesc->mChannelMask != channelMask)) {
783 ALOGV("getOutput() output %d requires downmix, try direct output",
784 output);
785 output = openOutput(outputDesc->device(),
786 samplingRate, format, channelMask,
787 AUDIO_OUTPUT_FLAG_DIRECT);
788 if (output)
789 outputs.add(output);
790 }
791 } else {
792 ALOGW("getOutput() no output found for devices 0x%08x", devices);
793 break;
794 }
795 }
796
797 if (outputs.isEmpty()) {
798 ALOGE("getOutput() session %d no output found", session);
799 clearSession(session);
800 return 0;
801 }
802
803 // Refine the list of outputs where audio data is going to be duplicated:
804 // either exclude all direct outputs (they're incompatible with duplicated
805 // output) or just take one direct output (no duplication will be possible)
806 if (outputs.size() > 1)
807 refineOutputs(outputs);
808
809 // There might be need of output duplication if the requested devices are not
810 // supported by a single output
811 if (outputs.size() > 1) {
812 // Create a duplicating output connected to all individual outputs that
813 // render to the requested devices
814 output = openDuplicateOutput(outputs, samplingRate, format, channelMask, session);
815 if (!output) {
816 ALOGE("getOutput() could not get duplicate output");
817 for (size_t i = 0; i < outputs.size(); i++) {
818 closeOutput(outputs.itemAt(i));
819 }
820 return 0;
821 }
822 ALOGV("getOutput() session %d got duplicate output %d", session, output);
823 } else {
824 // A single output is required to satisfy parameters and devices
825 output = outputs.itemAt(0);
826 outputDesc = mOutputs.valueFor(output);
827 ALOGV("getOutput() session %d got %s output %d", session,
828 outputDesc->isDirectOutput() ? "direct" : "mixer", output);
829 }
830
831 sessionDesc->mId = output;
832
833 // Session must be ref counted to maintain the current routes after re-routing
834 ALOGV("getOutput() session %d users %d->%d",
835 session, sessionDesc->mUsers, sessionDesc->mUsers+1);
836 sessionDesc->mUsers++;
837
838 initSessionVolume(session);
839
840 return output;
841}
842
843status_t AudioPolicyManager::startOutput(audio_io_handle_t output,
844 AudioSystem::stream_type stream,
845 int session)
846{
847 ALOGI("startOutput() output %d session %d stream %d", output, session, stream);
848
849 ssize_t index = mOutputs.indexOfKey(output);
850 if (index < 0) {
851 ALOGW("startOutput() unknow output %d", output);
852 return BAD_VALUE;
853 }
854
855 AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
856
857 // Increment usage count of this stream on the output
858 outputDesc->changeRefCount(stream, 1);
859 if (outputDesc->mRefCount[stream] == 1) {
860 audio_devices_t devices = getSessionDevices(session);
861 if (devices == AUDIO_DEVICE_NONE) {
862 ALOGW("startOutput() no device for session %d, using the cabin",
863 session);
864 setSessionZones(session, AUDIO_ZONE_CABIN);
865 }
866
867 setOutputDevice(output, devices, false);
868
869 // Apply volume rules for current stream and device if necessary
870 setVolume(stream, output);
871 }
872
873 return NO_ERROR;
874}
875
876status_t AudioPolicyManager::stopOutput(audio_io_handle_t output,
877 AudioSystem::stream_type stream,
878 int session)
879{
880 ALOGI("stopOutput() output %d session %d stream %d", output, session, stream);
881
882 ssize_t index = mOutputs.indexOfKey(output);
883 if (index < 0) {
884 ALOGE("stopOutput() unknown output %d", output);
885 return BAD_VALUE;
886 }
887
888 AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
889
890 if (outputDesc->mRefCount[stream] == 0) {
891 ALOGE("stopOutput() refcount is already 0 for output %d", output);
892 return INVALID_OPERATION;
893 }
894
895 // Decrement usage count of this stream on the output
896 outputDesc->changeRefCount(stream, -1);
897
898 // Store time at which the stream was stopped - see isStreamActive()
899 if (outputDesc->mRefCount[stream] == 0) {
900 outputDesc->mStopTime[stream] = systemTime();
901 audio_devices_t devices = getSessionDevices(session);
902
903 // Delay the device switch by twice the latency because stopOutput() is
904 // executed when the track stop() command is received and at that time
905 // the audio track buffer can still contain data that needs to be drained.
906 // The latency only covers the audio HAL and kernel buffers. Also the
907 // latency does not always include additional delay in the audio path
908 // (audio DSP, CODEC ...)
909 setOutputDevice(output, devices, false, outputDesc->mLatency*2);
910 }
911
912 return NO_ERROR;
913}
914
915void AudioPolicyManager::releaseOutput(audio_io_handle_t output, int session)
916{
917 ALOGI("releaseOutput() output %d session %d", output, session);
918
919 ssize_t index = mOutputs.indexOfKey(output);
920 if (index < 0) {
921 ALOGE("releaseOutput() unknown output %d", output);
922 return;
923 }
924
925 index = mSessions.indexOfKey(session);
926 if (index < 0) {
927 ALOGW("releaseOutput() unknown session %d", session);
928 } else {
929 SessionDescriptor *sessionDesc = mSessions.valueAt(index);
930 ALOGV("releaseOutput() session %d users %d->%d",
931 session, sessionDesc->mUsers, sessionDesc->mUsers-1);
932 if (!--sessionDesc->mUsers)
933 clearSession(session);
934 }
935
936 closeOutput(output);
937}
938
939audio_io_handle_t AudioPolicyManager::getInput(int inputSource,
940 uint32_t samplingRate,
941 uint32_t format,
942 uint32_t channelMask,
943 AudioSystem::audio_in_acoustics acoustics,
944 int session)
945{
946 audio_io_handle_t input = 0;
947 audio_devices_t device = getDeviceForInputSource(inputSource);
948
949 ALOGI("getInput() inputSource %d rate %d format %d channelMask %04x acoustics %x",
950 inputSource, samplingRate, format, channelMask, acoustics);
951
952 if (device == AUDIO_DEVICE_NONE) {
953 ALOGW("getInput() could not find device for inputSource %d", inputSource);
954 return 0;
955 }
956
957 // adapt channel selection to input source
958 switch(inputSource) {
959 case AUDIO_SOURCE_VOICE_UPLINK:
960 channelMask = AudioSystem::CHANNEL_IN_VOICE_UPLINK;
961 break;
962 case AUDIO_SOURCE_VOICE_DOWNLINK:
963 channelMask = AudioSystem::CHANNEL_IN_VOICE_DNLINK;
964 break;
965 case AUDIO_SOURCE_VOICE_CALL:
966 channelMask = (AudioSystem::CHANNEL_IN_VOICE_UPLINK |
967 AudioSystem::CHANNEL_IN_VOICE_DNLINK);
968 break;
969 default:
970 break;
971 }
972
973 IOProfile *profile = getInputProfile(device,
974 samplingRate,
975 format,
976 channelMask);
977 if (profile == NULL) {
978 ALOGE("getInput() could not find profile");
979 return 0;
980 }
981
982 if (profile->mModule->mHandle == 0) {
983 ALOGE("getInput(): HW module %s not opened", profile->mModule->mName);
984 return 0;
985 }
986
987 AudioInputDescriptor *inputDesc = new AudioInputDescriptor(profile);
988
989 inputDesc->mInputSource = inputSource;
990 inputDesc->mDevice = device;
991 inputDesc->mSamplingRate = samplingRate;
992 inputDesc->mFormat = (audio_format_t)format;
993 inputDesc->mChannelMask = (audio_channel_mask_t)channelMask;
994 inputDesc->mUsers = 0;
995 input = mpClientInterface->openInput(profile->mModule->mHandle,
996 &inputDesc->mDevice,
997 &inputDesc->mSamplingRate,
998 &inputDesc->mFormat,
999 &inputDesc->mChannelMask);
1000
1001 // only accept input with the exact requested set of parameters
1002 if (input == 0 ||
1003 (samplingRate != inputDesc->mSamplingRate) ||
1004 (format != inputDesc->mFormat) ||
1005 (channelMask != inputDesc->mChannelMask)) {
1006 ALOGV("getInput() failed opening input: rate %d format %d channelMask %d",
1007 samplingRate, format, channelMask);
1008 if (input != 0) {
1009 mpClientInterface->closeInput(input);
1010 }
1011 delete inputDesc;
1012 return 0;
1013 }
1014 mInputs.add(input, inputDesc);
1015 return input;
1016}
1017
1018status_t AudioPolicyManager::startInput(audio_io_handle_t input)
1019{
1020 ALOGI("startInput() input %d", input);
1021
1022 ssize_t index = mInputs.indexOfKey(input);
1023 if (index < 0) {
1024 ALOGW("startInput() unknow input %d", input);
1025 return BAD_VALUE;
1026 }
1027
1028 AudioInputDescriptor *inputDesc = mInputs.valueAt(index);
1029
1030 // Refuse 2 active AudioRecord clients at the same time
1031 if (getActiveInput() != 0) {
1032 ALOGE("startInput() input %d failed: other input already started", input);
1033 return INVALID_OPERATION;
1034 }
1035
1036 audio_devices_t newDevice = getDeviceForInputSource(inputDesc->mInputSource);
1037 if ((newDevice != AUDIO_DEVICE_NONE) && (newDevice != inputDesc->mDevice)) {
1038 inputDesc->mDevice = newDevice;
1039 }
1040
1041 AudioParameter param = AudioParameter();
1042 param.addInt(String8(AudioParameter::keyRouting), (int)inputDesc->mDevice);
1043 param.addInt(String8(AudioParameter::keyInputSource), (int)inputDesc->mInputSource);
1044 ALOGV("startInput() input source %d", inputDesc->mInputSource);
1045 mpClientInterface->setParameters(input, param.toString());
1046
1047 inputDesc->mUsers = 1;
1048
1049 return NO_ERROR;
1050}
1051
1052status_t AudioPolicyManager::stopInput(audio_io_handle_t input)
1053{
1054 ALOGI("stopInput() input %d", input);
1055
1056 ssize_t index = mInputs.indexOfKey(input);
1057 if (index < 0) {
1058 ALOGW("stopInput() unknow input %d", input);
1059 return BAD_VALUE;
1060 }
1061 AudioInputDescriptor *inputDesc = mInputs.valueAt(index);
1062
1063 if (inputDesc->mUsers == 0) {
1064 ALOGW("stopInput() input %d already stopped", input);
1065 return INVALID_OPERATION;
1066 } else {
1067 AudioParameter param = AudioParameter();
1068 param.addInt(String8(AudioParameter::keyRouting), 0);
1069 mpClientInterface->setParameters(input, param.toString());
1070 inputDesc->mUsers = 0;
1071 return NO_ERROR;
1072 }
1073}
1074
1075void AudioPolicyManager::releaseInput(audio_io_handle_t input, int session)
1076{
1077 ALOGI("releaseInput() %d", input);
1078
1079 ssize_t index = mInputs.indexOfKey(input);
1080 if (index < 0) {
1081 ALOGW("releaseInput() unknown input %d", input);
1082 return;
1083 }
1084 mpClientInterface->closeInput(input);
1085 delete mInputs.valueAt(index);
1086 mInputs.removeItem(input);
1087}
1088
1089void AudioPolicyManager::initStreamVolume(AudioSystem::stream_type stream,
1090 int indexMin,
1091 int indexMax)
1092{
1093 ALOGV("initStreamVolume() stream %d min %d max %d", stream, indexMin, indexMax);
1094
1095 if (indexMin < 0 || indexMin >= indexMax) {
1096 ALOGW("initStreamVolume() invalid index limits for stream %d min %d max %d",
1097 stream, indexMin, indexMax);
1098 return;
1099 }
1100
1101 mStreams[stream].mIndexMin = indexMin;
1102 mStreams[stream].mIndexMax = indexMax;
1103}
1104
1105status_t AudioPolicyManager::setStreamVolumeIndex(AudioSystem::stream_type stream,
1106 int index,
1107 audio_devices_t device)
1108{
1109 if ((index < mStreams[stream].mIndexMin) || (index > mStreams[stream].mIndexMax)) {
1110 ALOGE("setStreamVolumeIndex() invalid index %d, should be within %d,%d",
1111 index, mStreams[stream].mIndexMin, mStreams[stream].mIndexMax);
1112 return BAD_VALUE;
1113 }
1114
1115 if (!audio_is_output_device(device)) {
1116 ALOGE("setStreamVolumeIndex() devices 0x%08x is invalid", device);
1117 return BAD_VALUE;
1118 }
1119
1120 // Force max volume if stream cannot be muted
1121 if (!mStreams[stream].mCanBeMuted)
1122 index = mStreams[stream].mIndexMax;
1123
1124 ALOGV("setStreamVolumeIndex() stream %d device 0x%08x index %d",
1125 stream, device, index);
1126
1127 mStreams[stream].mIndexCur = index;
1128
1129 // Compute and apply stream volume on all outputs
1130 status_t status = NO_ERROR;
1131 for (size_t i = 0; i < mOutputs.size(); i++) {
1132 status_t volStatus = setVolume(stream, mOutputs.keyAt(i));
1133 if (volStatus != NO_ERROR)
1134 status = volStatus;
1135 }
1136
1137 return status;
1138}
1139
1140status_t AudioPolicyManager::getStreamVolumeIndex(AudioSystem::stream_type stream,
1141 int *index,
1142 audio_devices_t device)
1143{
1144 if (index == NULL)
1145 return BAD_VALUE;
1146
1147 if (!audio_is_output_device(device)) {
1148 ALOGE("getStreamVolumeIndex() devices 0x%08x is invalid", device);
1149 return BAD_VALUE;
1150 }
1151
1152 *index = mStreams[stream].mIndexCur;
1153
1154 ALOGV("getStreamVolumeIndex() stream %d device 0x%08x index %d",
1155 stream, device, *index);
1156
1157 return NO_ERROR;
1158}
1159
1160uint32_t AudioPolicyManager::getStrategyForStream(AudioSystem::stream_type stream)
1161{
1162 return (uint32_t)getStrategy(stream);
1163}
1164
1165audio_devices_t AudioPolicyManager::getDevicesForStream(AudioSystem::stream_type stream)
1166{
1167 if (stream < (AudioSystem::stream_type) 0 ||
1168 stream >= AudioSystem::NUM_STREAM_TYPES) {
1169 return AUDIO_DEVICE_NONE;
1170 }
1171
1172 // Same stream type on different listening zones may produce devices
1173 // that are anyways discarded by AudioService, since it gives priority
1174 // to speaker. Use main cabin device refined for the stream type as
1175 // reference for stream type volume in the system.
1176 return getRefinedZoneDevices(AUDIO_ZONE_CABIN, stream);
1177}
1178
1179audio_io_handle_t AudioPolicyManager::getOutputForEffect(const effect_descriptor_t *desc)
1180{
1181 audio_devices_t device = getRefinedZoneDevices(AUDIO_ZONE_CABIN,
1182 AudioSystem::MUSIC);
1183 audio_io_handle_t output = mPrimaryOutput;
1184 for (size_t i = 0; i < mOutputs.size(); i++) {
1185 AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
1186 if ((device & outputDesc->supportedDevices()) == device) {
1187 output = mOutputs.keyAt(i);
1188 if (outputDesc->mFlags & AUDIO_OUTPUT_FLAG_DEEP_BUFFER)
1189 break;
1190 }
1191 }
1192
1193 ALOGV("getOutputForEffect() output %d", output);
1194
1195 return output;
1196}
1197
1198status_t AudioPolicyManager::registerEffect(const effect_descriptor_t *desc,
1199 audio_io_handle_t io,
1200 uint32_t strategy,
1201 int session,
1202 int id)
1203{
1204 ssize_t index = mOutputs.indexOfKey(io);
1205 if (index < 0) {
1206 index = mInputs.indexOfKey(io);
1207 if (index < 0) {
1208 ALOGW("registerEffect() unknown io %d", io);
1209 return INVALID_OPERATION;
1210 }
1211 }
1212
1213 if (mTotalEffectsMemory + desc->memoryUsage > getMaxEffectsMemory()) {
1214 ALOGW("registerEffect() memory limit exceeded for Fx %s, Memory %d KB",
1215 desc->name, desc->memoryUsage);
1216 return INVALID_OPERATION;
1217 }
1218 mTotalEffectsMemory += desc->memoryUsage;
1219 ALOGV("registerEffect() effect %s, io %d, strategy %d session %d id %d",
1220 desc->name, io, strategy, session, id);
1221 ALOGV("registerEffect() memory %d, total memory %d",
1222 desc->memoryUsage, mTotalEffectsMemory);
1223
1224 EffectDescriptor *pDesc = new EffectDescriptor();
1225 memcpy (&pDesc->mDesc, desc, sizeof(effect_descriptor_t));
1226 pDesc->mIo = io;
1227 pDesc->mStrategy = (routing_strategy)strategy;
1228 pDesc->mSession = session;
1229 pDesc->mEnabled = false;
1230
1231 mEffects.add(id, pDesc);
1232
1233 return NO_ERROR;
1234}
1235
1236status_t AudioPolicyManager::unregisterEffect(int id)
1237{
1238 ssize_t index = mEffects.indexOfKey(id);
1239 if (index < 0) {
1240 ALOGW("unregisterEffect() unknown effect ID %d", id);
1241 return INVALID_OPERATION;
1242 }
1243
1244 EffectDescriptor *pDesc = mEffects.valueAt(index);
1245
1246 setEffectEnabled(pDesc, false);
1247
1248 if (mTotalEffectsMemory < pDesc->mDesc.memoryUsage) {
1249 ALOGW("unregisterEffect() memory %d too big for total %d",
1250 pDesc->mDesc.memoryUsage, mTotalEffectsMemory);
1251 pDesc->mDesc.memoryUsage = mTotalEffectsMemory;
1252 }
1253 mTotalEffectsMemory -= pDesc->mDesc.memoryUsage;
1254 ALOGV("unregisterEffect() effect %s, ID %d, memory %d total memory %d",
1255 pDesc->mDesc.name, id, pDesc->mDesc.memoryUsage, mTotalEffectsMemory);
1256
1257 mEffects.removeItem(id);
1258 delete pDesc;
1259
1260 return NO_ERROR;
1261}
1262
1263status_t AudioPolicyManager::setEffectEnabled(int id, bool enabled)
1264{
1265 ssize_t index = mEffects.indexOfKey(id);
1266 if (index < 0) {
1267 ALOGW("unregisterEffect() unknown effect ID %d", id);
1268 return INVALID_OPERATION;
1269 }
1270
1271 return setEffectEnabled(mEffects.valueAt(index), enabled);
1272}
1273
1274status_t AudioPolicyManager::setEffectEnabled(EffectDescriptor *pDesc, bool enabled)
1275{
1276 if (enabled == pDesc->mEnabled) {
1277 ALOGV("setEffectEnabled(%s) effect already %s",
1278 enabled?"true":"false", enabled?"enabled":"disabled");
1279 return INVALID_OPERATION;
1280 }
1281
1282 if (enabled) {
1283 if (mTotalEffectsCpuLoad + pDesc->mDesc.cpuLoad > getMaxEffectsCpuLoad()) {
1284 ALOGW("setEffectEnabled(true) CPU Load limit exceeded for Fx %s, CPU %f MIPS",
1285 pDesc->mDesc.name, (float)pDesc->mDesc.cpuLoad/10);
1286 return INVALID_OPERATION;
1287 }
1288 mTotalEffectsCpuLoad += pDesc->mDesc.cpuLoad;
1289 ALOGV("setEffectEnabled(true) total CPU %d", mTotalEffectsCpuLoad);
1290 } else {
1291 if (mTotalEffectsCpuLoad < pDesc->mDesc.cpuLoad) {
1292 ALOGW("setEffectEnabled(false) CPU load %d too high for total %d",
1293 pDesc->mDesc.cpuLoad, mTotalEffectsCpuLoad);
1294 pDesc->mDesc.cpuLoad = mTotalEffectsCpuLoad;
1295 }
1296 mTotalEffectsCpuLoad -= pDesc->mDesc.cpuLoad;
1297 ALOGV("setEffectEnabled(false) total CPU %d", mTotalEffectsCpuLoad);
1298 }
1299 pDesc->mEnabled = enabled;
1300 return NO_ERROR;
1301}
1302
1303bool AudioPolicyManager::isStreamActive(int stream, uint32_t inPastMs) const
1304{
1305 nsecs_t sysTime = systemTime();
1306 for (size_t i = 0; i < mOutputs.size(); i++) {
1307 const AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
1308 if (outputDesc->isStreamActive((AudioSystem::stream_type)stream,
1309 inPastMs, sysTime)) {
1310 return true;
1311 }
1312 }
1313 return false;
1314}
1315
1316bool AudioPolicyManager::isStreamActiveRemotely(int stream, uint32_t inPastMs) const
1317{
1318 nsecs_t sysTime = systemTime();
1319 for (size_t i = 0; i < mOutputs.size(); i++) {
1320 const AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
1321 if (((outputDesc->device() & APM_AUDIO_OUT_DEVICE_REMOTE_ALL) != 0) &&
1322 outputDesc->isStreamActive((AudioSystem::stream_type)stream,
1323 inPastMs, sysTime)) {
1324 return true;
1325 }
1326 }
1327 return false;
1328}
1329
1330bool AudioPolicyManager::isSourceActive(audio_source_t source) const
1331{
1332 for (size_t i = 0; i < mInputs.size(); i++) {
1333 const AudioInputDescriptor * inputDescriptor = mInputs.valueAt(i);
1334 if ((inputDescriptor->mInputSource == (int) source)
1335 && (inputDescriptor->mUsers > 0)) {
1336 return true;
1337 }
1338 }
1339 return false;
1340}
1341
1342status_t AudioPolicyManager::dump(int fd)
1343{
1344 const size_t SIZE = 256;
1345 char buffer[SIZE];
1346 String8 result;
1347
1348 snprintf(buffer, SIZE, "\nAudioPolicyManager Dump: %p\n", this);
1349 result.append(buffer);
1350
1351 snprintf(buffer, SIZE, " Primary Output: %d\n", mPrimaryOutput);
1352 result.append(buffer);
1353 snprintf(buffer, SIZE, " A2DP device address: %s\n", mA2dpDeviceAddress.string());
1354 result.append(buffer);
1355 snprintf(buffer, SIZE, " SCO device address: %s\n", mScoDeviceAddress.string());
1356 result.append(buffer);
1357 snprintf(buffer, SIZE, " USB audio ALSA %s\n", mUsbCardAndDevice.string());
1358 result.append(buffer);
1359 snprintf(buffer, SIZE, " Output devices: %08x\n", mAvailableOutputDevices);
1360 result.append(buffer);
1361 snprintf(buffer, SIZE, " Input devices: %08x\n", mAvailableInputDevices);
1362 result.append(buffer);
1363 snprintf(buffer, SIZE, " Phone state: %d\n", mPhoneState);
1364 result.append(buffer);
1365 snprintf(buffer, SIZE, " Force use for communications %d\n", mForceUse[AudioSystem::FOR_COMMUNICATION]);
1366 result.append(buffer);
1367 snprintf(buffer, SIZE, " Force use for media %d\n", mForceUse[AudioSystem::FOR_MEDIA]);
1368 result.append(buffer);
1369 snprintf(buffer, SIZE, " Force use for record %d\n", mForceUse[AudioSystem::FOR_RECORD]);
1370 result.append(buffer);
1371 snprintf(buffer, SIZE, " Force use for dock %d\n", mForceUse[AudioSystem::FOR_DOCK]);
1372 result.append(buffer);
1373 snprintf(buffer, SIZE, " Force use for system %d\n", mForceUse[AudioSystem::FOR_SYSTEM]);
1374 result.append(buffer);
1375 write(fd, result.string(), result.size());
1376
1377
1378 snprintf(buffer, SIZE, "\nHW Modules dump:\n");
1379 write(fd, buffer, strlen(buffer));
1380 for (size_t i = 0; i < mHwModules.size(); i++) {
1381 snprintf(buffer, SIZE, "- HW Module %d:\n", i + 1);
1382 write(fd, buffer, strlen(buffer));
1383 mHwModules[i]->dump(fd);
1384 }
1385
1386 snprintf(buffer, SIZE, "\nOutputs dump:\n");
1387 write(fd, buffer, strlen(buffer));
1388 for (size_t i = 0; i < mOutputs.size(); i++) {
1389 snprintf(buffer, SIZE, "- Output %d dump:\n", mOutputs.keyAt(i));
1390 write(fd, buffer, strlen(buffer));
1391 mOutputs.valueAt(i)->dump(fd);
1392 }
1393
1394 snprintf(buffer, SIZE, "\nInputs dump:\n");
1395 write(fd, buffer, strlen(buffer));
1396 for (size_t i = 0; i < mInputs.size(); i++) {
1397 snprintf(buffer, SIZE, "- Input %d dump:\n", mInputs.keyAt(i));
1398 write(fd, buffer, strlen(buffer));
1399 mInputs.valueAt(i)->dump(fd);
1400 }
1401
1402 snprintf(buffer, SIZE, "\nStreams dump:\n");
1403 write(fd, buffer, strlen(buffer));
1404 snprintf(buffer, SIZE,
1405 " Stream Can be muted Index Min Index Max Index Cur\n");
1406 write(fd, buffer, strlen(buffer));
1407 for (size_t i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
1408 snprintf(buffer, SIZE, " %02d ", i);
1409 write(fd, buffer, strlen(buffer));
1410 mStreams[i].dump(fd);
1411 }
1412
1413 snprintf(buffer, SIZE, "\nTotal Effects CPU: %f MIPS, Total Effects memory: %d KB\n",
1414 (float)mTotalEffectsCpuLoad/10, mTotalEffectsMemory);
1415 write(fd, buffer, strlen(buffer));
1416
1417 snprintf(buffer, SIZE, "Registered effects:\n");
1418 write(fd, buffer, strlen(buffer));
1419 for (size_t i = 0; i < mEffects.size(); i++) {
1420 snprintf(buffer, SIZE, "- Effect %d dump:\n", mEffects.keyAt(i));
1421 write(fd, buffer, strlen(buffer));
1422 mEffects.valueAt(i)->dump(fd);
1423 }
1424
1425 snprintf(buffer, SIZE, "\nSessions:\n");
1426 write(fd, buffer, strlen(buffer));
1427 for (size_t i = 0; i < mSessions.size(); i++) {
1428 snprintf(buffer, SIZE, "- Session %d dump:\n", mSessions.keyAt(i));
1429 write(fd, buffer, strlen(buffer));
1430 mSessions.valueAt(i)->dump(fd);
1431 }
1432
1433 snprintf(buffer, SIZE, "\nZone Affinity:\n");
1434 write(fd, buffer, strlen(buffer));
1435 snprintf(buffer, SIZE, " Zone Devices\n");
1436 write(fd, buffer, strlen(buffer));
1437 for (size_t i = 0; i < mZoneAffinity.size(); i++) {
1438 snprintf(buffer, SIZE, " 0x%x 0x%08x\n",
1439 mZoneAffinity.keyAt(i), mZoneAffinity.valueAt(i));
1440 write(fd, buffer, strlen(buffer));
1441 }
1442
1443 return NO_ERROR;
1444}
1445
1446// ----------------------------------------------------------------------------
1447// AudioPolicyManager
1448// ----------------------------------------------------------------------------
1449
1450AudioPolicyManager::AudioPolicyManager(AudioPolicyClientInterface *clientInterface)
1451 : mPrimaryOutput((audio_io_handle_t)0),
1452 mAvailableOutputDevices(AUDIO_DEVICE_NONE),
1453 mA2dpSuspended(false),
1454 mHasA2dp(false),
1455 mHasUsb(false),
1456 mHasRemoteSubmix(false),
1457 mPhoneState(AudioSystem::MODE_NORMAL),
1458 mLastVoiceVolume(-1.0f),
1459 mTotalEffectsCpuLoad(0),
1460 mTotalEffectsMemory(0),
1461 mParser(mHwModules, mZoneAffinity)
1462{
1463 mpClientInterface = clientInterface;
1464
1465 for (int i = 0; i < AudioSystem::NUM_FORCE_USE; i++) {
1466 mForceUse[i] = AudioSystem::FORCE_NONE;
1467 }
1468
1469 initializeVolumeCurves();
1470
1471 mA2dpDeviceAddress = String8("");
1472 mScoDeviceAddress = String8("");
1473 mUsbCardAndDevice = String8("");
1474
1475 if (mParser.loadAudioPolicyConfig(AUDIO_POLICY_VENDOR_CONFIG_FILE) != NO_ERROR) {
1476 if (mParser.loadAudioPolicyConfig(AUDIO_POLICY_CONFIG_FILE) != NO_ERROR) {
1477 ALOGE("could not load audio policy configuration file, setting defaults");
1478 mParser.defaultAudioPolicyConfig();
1479 }
1480 }
1481
1482 mAvailableInputDevices = mParser.getAttachedInputDevices();
1483 mAttachedOutputDevices = mParser.getAttachedOutputDevices();
1484 mDefaultOutputDevice = mParser.getDefaultOutputDevice();
1485 mHasA2dp = mParser.supportsA2DP();
1486 mHasUsb = mParser.supportsUSB();
1487 mHasRemoteSubmix = mParser.supportsRemoteSubmix();
1488
1489 if (mZoneAffinity.indexOfKey(AUDIO_ZONE_CABIN) < 0) {
1490 ALOGW("No affinity set for cabin, using default");
1491 mZoneAffinity.add(AUDIO_ZONE_CABIN, AUDIO_DEVICE_OUT_SPEAKER);
1492 }
1493
1494 if (mZoneAffinity.indexOfKey(AUDIO_ZONE_BACKSEAT1) < 0) {
1495 ALOGW("No affinity set for back-seat 1, using default");
1496 mZoneAffinity.add(AUDIO_ZONE_BACKSEAT1, AUDIO_DEVICE_OUT_WIRED_HEADPHONE);
1497 }
1498
1499 if (mZoneAffinity.indexOfKey(AUDIO_ZONE_BACKSEAT2) < 0) {
1500 ALOGW("No affinity set for back-seat 2, using default");
1501 mZoneAffinity.add(AUDIO_ZONE_BACKSEAT2, AUDIO_DEVICE_OUT_WIRED_HEADPHONE2);
1502 }
1503
1504 ALOGI("Initialize per-listening zone volumes");
1505 for (audio_zones_t zone = AUDIO_ZONE_LAST; zone & AUDIO_ZONE_ALL; zone >>= 1) {
1506 mZoneVolume.add(zone, 1.0f);
1507 }
1508
1509 ALOGI("Initialize listening zones routes");
1510 setZoneDevices(AUDIO_ZONE_CABIN, mDefaultOutputDevice |
1511 (mZoneAffinity.valueFor(AUDIO_ZONE_CABIN) & mAttachedOutputDevices));
1512 setZoneDevices(AUDIO_ZONE_BACKSEAT1,
1513 mZoneAffinity.valueFor(AUDIO_ZONE_BACKSEAT1) & mAttachedOutputDevices);
1514 setZoneDevices(AUDIO_ZONE_BACKSEAT2,
1515 mZoneAffinity.valueFor(AUDIO_ZONE_BACKSEAT2) & mAttachedOutputDevices);
1516
1517 // Open all output streams needed to access attached devices
1518 for (size_t i = 0; i < mHwModules.size(); i++) {
1519 mHwModules[i]->mHandle = mpClientInterface->loadHwModule(mHwModules[i]->mName);
1520 if (mHwModules[i]->mHandle == 0) {
1521 ALOGW("could not open HW module %s", mHwModules[i]->mName);
1522 continue;
1523 }
1524 // Open all output streams needed to access attached devices
1525 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) {
1526 IOProfile *profile = mHwModules[i]->mOutputProfiles[j];
1527 audio_devices_t devices = profile->mSupportedDevices & mAttachedOutputDevices;
1528
1529 // Skip profiles that don't support attached output devices
1530 if (devices == AUDIO_DEVICE_NONE)
1531 continue;
1532
1533 // Open the output with flags defined in the config file
1534 audio_io_handle_t output = openOutput_l(profile, devices, profile->mFlags);
1535 if (output) {
1536 AudioOutputDescriptor *desc = mOutputs.valueFor(output);
1537
1538 ALOGV("output %d users %u->%u",
1539 output, desc->mUsers, desc->mUsers+1);
1540 desc->mUsers++;
1541
1542 mAvailableOutputDevices |= devices;
1543 if (!mPrimaryOutput &&
1544 (profile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY)) {
1545 mPrimaryOutput = output;
1546 }
1547 setOutputDevice(output, devices, true);
1548 }
1549 }
1550 }
1551
1552 ALOGE_IF((mAttachedOutputDevices & ~mAvailableOutputDevices),
1553 "No output found for attached devices 0x%08x",
1554 (mAttachedOutputDevices & ~mAvailableOutputDevices));
1555
1556 ALOGE_IF((mPrimaryOutput == 0), "Failed to open primary output");
1557}
1558
1559AudioPolicyManager::~AudioPolicyManager()
1560{
1561 for (size_t i = 0; i < mOutputs.size(); i++) {
1562 mpClientInterface->closeOutput(mOutputs.keyAt(i));
1563 delete mOutputs.valueAt(i);
1564 }
1565 for (size_t i = 0; i < mSessions.size(); i++) {
1566 delete mSessions.valueAt(i);
1567 }
1568 for (size_t i = 0; i < mInputs.size(); i++) {
1569 mpClientInterface->closeInput(mInputs.keyAt(i));
1570 delete mInputs.valueAt(i);
1571 }
1572}
1573
1574status_t AudioPolicyManager::initCheck()
1575{
1576 return (mPrimaryOutput == 0) ? NO_INIT : NO_ERROR;
1577}
1578
1579// ---
1580
1581AudioPolicyManager::routing_strategy
1582AudioPolicyManager::getStrategy(AudioSystem::stream_type stream)
1583{
1584 // stream to strategy mapping
1585 switch (stream) {
1586 case AudioSystem::VOICE_CALL:
1587 case AudioSystem::BLUETOOTH_SCO:
1588 return STRATEGY_PHONE;
1589 case AudioSystem::RING:
1590 case AudioSystem::ALARM:
1591 return STRATEGY_SONIFICATION;
1592 case AudioSystem::NOTIFICATION:
1593 return STRATEGY_SONIFICATION_RESPECTFUL;
1594 case AudioSystem::DTMF:
1595 return STRATEGY_DTMF;
1596 default:
1597 ALOGE("unknown stream type");
1598 case AudioSystem::SYSTEM:
1599 // NOTE: SYSTEM stream uses MEDIA strategy because muting music and switching outputs
1600 // while key clicks are played produces a poor result
1601 case AudioSystem::TTS:
1602 case AudioSystem::MUSIC:
1603 return STRATEGY_MEDIA;
1604 case AudioSystem::ENFORCED_AUDIBLE:
1605 return STRATEGY_ENFORCED_AUDIBLE;
1606 }
1607}
1608
1609AudioPolicyManager::device_category
1610AudioPolicyManager::getDeviceCategory(audio_devices_t device)
1611{
1612 switch(getDeviceForVolume(device)) {
1613 case AUDIO_DEVICE_OUT_EARPIECE:
1614 return DEVICE_CATEGORY_EARPIECE;
1615 case AUDIO_DEVICE_OUT_WIRED_HEADSET:
1616 case AUDIO_DEVICE_OUT_WIRED_HEADPHONE:
1617 case AUDIO_DEVICE_OUT_WIRED_HEADPHONE2:
1618 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO:
1619 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET:
1620 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP:
1621 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES:
1622 return DEVICE_CATEGORY_HEADSET;
1623 case AUDIO_DEVICE_OUT_SPEAKER:
1624 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT:
1625 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER:
1626 case AUDIO_DEVICE_OUT_AUX_DIGITAL:
1627 case AUDIO_DEVICE_OUT_USB_ACCESSORY:
1628 case AUDIO_DEVICE_OUT_USB_DEVICE:
1629 case AUDIO_DEVICE_OUT_REMOTE_SUBMIX:
1630 default:
1631 return DEVICE_CATEGORY_SPEAKER;
1632 }
1633}
1634
1635audio_devices_t AudioPolicyManager::getDeviceForVolume(audio_devices_t device)
1636{
1637 if (device == AUDIO_DEVICE_NONE) {
1638 // this happens when forcing a route update and no track is active on an output.
1639 // In this case the returned category is not important.
1640 device = AUDIO_DEVICE_OUT_SPEAKER;
1641 } else if (AudioSystem::popCount(device) > 1) {
1642 // Multiple device selection is either:
1643 // - speaker + one other device: give priority to speaker in this case.
1644 // - headphone(s) + other devices: give priority to headphones (back-seat)
1645 // - one A2DP device + another device: happens with duplicated output.
1646 // In this case retain the device on the A2DP output as the other must not
1647 // correspond to an active selection if not the speaker.
1648 if (device & AUDIO_DEVICE_OUT_SPEAKER) {
1649 device = AUDIO_DEVICE_OUT_SPEAKER;
1650 } else if (device & AUDIO_DEVICE_OUT_WIRED_HEADPHONE) {
1651 device = AUDIO_DEVICE_OUT_WIRED_HEADPHONE;
1652 } else if (device & AUDIO_DEVICE_OUT_WIRED_HEADPHONE2) {
1653 device = AUDIO_DEVICE_OUT_WIRED_HEADPHONE2;
1654 } else {
1655 device = (audio_devices_t)(device & AUDIO_DEVICE_OUT_ALL_A2DP);
1656 }
1657 }
1658
1659 ALOGW_IF(AudioSystem::popCount(device) != 1,
1660 "getDeviceForVolume() invalid device combination: 0x%08x", device);
1661
1662 return device;
1663}
1664
1665bool AudioPolicyManager::needsDirectOuput(AudioSystem::stream_type stream,
1666 uint32_t samplingRate,
1667 uint32_t format,
1668 uint32_t channelMask,
1669 AudioSystem::output_flags flags,
1670 audio_devices_t device)
1671{
1672 return ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) ||
1673 (format != 0 && !AudioSystem::isLinearPCM(format)));
1674}
1675
1676void AudioPolicyManager::queryOutputParameters(audio_io_handle_t output,
1677 IOProfile *profile)
1678{
1679 String8 reply;
1680 char *rates = NULL;
1681 char *formats = NULL;
1682 char *channels = NULL;
1683
1684 if (profile->mSamplingRates[0] == 0) {
1685 reply = mpClientInterface->getParameters(output,
1686 String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES));
1687 ALOGV("queryOutputParameters() direct output sup sampling rates %s",
1688 reply.string());
1689 rates = (char *)reply.string();
1690 }
1691
1692 if (profile->mFormats[0] == 0) {
1693 reply = mpClientInterface->getParameters(output,
1694 String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS));
1695 ALOGV("queryOutputParameters() direct output sup formats %s",
1696 reply.string());
1697 formats = (char *)reply.string();
1698 }
1699
1700 if (profile->mChannelMasks[0] == 0) {
1701 reply = mpClientInterface->getParameters(output,
1702 String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS));
1703 ALOGV("queryOutputParameters() direct output sup channel masks %s",
1704 reply.string());
1705 channels = (char *)reply.string();
1706 }
1707
1708 mParser.fillProfile(profile, rates, formats, channels);
1709}
1710
1711void AudioPolicyManager::getProfilesForDevices(audio_devices_t devices,
1712 SortedVector<IOProfile*> &profiles)
1713{
1714 for (size_t i = 0; i < mHwModules.size(); i++) {
1715 if (mHwModules[i]->mHandle == 0)
1716 continue;
1717
1718 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) {
1719 IOProfile *profile = mHwModules[i]->mOutputProfiles[j];
1720 if (profile->mSupportedDevices & devices)
1721 profiles.add(profile);
1722 }
1723 }
1724}
1725
1726void AudioPolicyManager::setDeviceAddress(audio_io_handle_t output,
1727 audio_devices_t device)
1728{
1729 String8 paramStr;
1730
1731 if (mHasA2dp && audio_is_a2dp_device(device)) {
1732 AudioParameter param;
1733 param.add(String8(AUDIO_PARAMETER_A2DP_SINK_ADDRESS), mA2dpDeviceAddress);
1734 paramStr = param.toString();
1735 } else if (mHasUsb && audio_is_usb_device(device)) {
1736 paramStr = mUsbCardAndDevice;
1737 }
1738
1739 // not currently handling multiple simultaneous submixes: ignoring remote submix
1740 // case and address
1741 if (!paramStr.isEmpty()) {
1742 ALOGV("setDeviceAddress() set device address '%s'", paramStr.string());
1743 mpClientInterface->setParameters(output, paramStr);
1744 }
1745}
1746
1747void AudioPolicyManager::refineOutputs(SortedVector<audio_io_handle_t> &outputs)
1748{
1749 SortedVector<audio_io_handle_t> direct;
1750 SortedVector<audio_io_handle_t> discarded;
1751 bool useDirectOutput;
1752 char value[PROPERTY_VALUE_MAX];
1753
1754 // AudioFlinger's duplicating output doesn't support direct outputs, so there
1755 // are two possible choices:
1756 // - Keep mixer outputs, discard all direct outputs (useDirectOutput = false)
1757 // - Use a single direct output, discard the rest (useDirectOutput = true)
1758 if ((property_get("multizone_audio.use_direct", value, NULL) == 0) ||
1759 !strcmp(value, "0") || !strcasecmp(value, "false")) {
1760 ALOGV("refineOutputs() keep mixer outputs, discard all direct outputs");
1761 useDirectOutput = false;
1762 } else {
1763 ALOGV("refineOutputs() keep a single direct output");
1764 useDirectOutput = true;
1765 }
1766
1767 // Find all direct outputs in the candidates for duplication
1768 for (size_t i = 0; i < outputs.size(); i++) {
1769 AudioOutputDescriptor *desc = mOutputs.valueFor(outputs.itemAt(i));
1770 if (desc->isDirectOutput())
1771 direct.add(outputs.itemAt(i));
1772 }
1773
1774 // If all outputs are direct, the only option is using one of them to
1775 // prevent duplication of direct outputs
1776 useDirectOutput |= (direct.size() == outputs.size());
1777
1778 if (direct.isEmpty()) {
1779 // Nothing to refine when no direct outputs were found
1780 ALOGVV("refineOutputs() no direct outputs found");
1781 } else if (useDirectOutput) {
1782 // Use the first direct output and discard the rest
1783 audio_io_handle_t out = direct.itemAt(0);
1784 discarded = outputs;
1785 discarded.remove(out);
1786 outputs.clear();
1787 outputs.add(out);
1788 } else {
1789 // Discard direct outputs, keep mixer outputs
1790 for (size_t i = 0; i < direct.size(); i++)
1791 outputs.remove(direct.itemAt(i));
1792 discarded = direct;
1793 }
1794
1795 ALOGI_IF(!discarded.isEmpty(), "refineOutputs() discard %d %s outputs",
1796 discarded.size(), useDirectOutput ? "mixer" : "direct");
1797
1798 for (size_t i = 0; i < discarded.size(); i++)
1799 closeOutput(discarded.itemAt(i));
1800}
1801
1802audio_io_handle_t AudioPolicyManager::openOutput_l(IOProfile *profile,
1803 audio_devices_t devices,
1804 audio_output_flags_t flags,
1805 uint32_t samplingRate,
1806 uint32_t format,
1807 uint32_t channelMask)
1808{
1809 ALOGV("openOutput_l() opening output for devices 0x%08x",
1810 devices & profile->mSupportedDevices);
1811
1812 AudioOutputDescriptor *desc = new AudioOutputDescriptor(profile);
1813 audio_io_handle_t output = 0;
1814
1815 // Direct outputs must be opened with the exact requested parameters
1816 if (flags & AUDIO_OUTPUT_FLAG_DIRECT) {
1817 if (samplingRate)
1818 desc->mSamplingRate = samplingRate;
1819 if (format)
1820 desc->mFormat = (audio_format_t)format;
1821 if (channelMask)
1822 desc->mChannelMask = channelMask;
1823 }
1824
1825 // AudioTrack queries the sampling rate to check if default resampler
1826 // implementation supports it. Resampler limits the input sampling rate
1827 // to 2x the output rate, so the best output sampling rate in the profile
1828 // is the highest
1829 if (!desc->mSamplingRate) {
1830 uint32_t maxRate = 0;
1831 for (size_t i = 0; i < profile->mSamplingRates.size(); i++) {
1832 if (profile->mSamplingRates[i] > maxRate)
1833 maxRate = profile->mSamplingRates[i];
1834 }
1835 desc->mSamplingRate = maxRate;
1836 }
1837
1838 // Skip profiles that don't support the requested flags (direct or none)
1839 if ((flags & AUDIO_OUTPUT_FLAG_DIRECT) !=
1840 (desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT)) {
1841 ALOGV("openOutput_l() flags mismatch req 0x%08x desc 0x%08x",
1842 flags, desc->mFlags);
1843 delete desc;
1844 return 0;
1845 }
1846
1847 desc->mDevice = devices & profile->mSupportedDevices;
1848
1849 // It's hardware module task to restrict the number of outputs that
1850 // can be opened
1851 output = mpClientInterface->openOutput(profile->mModule->mHandle,
1852 &desc->mDevice,
1853 &desc->mSamplingRate,
1854 &desc->mFormat,
1855 &desc->mChannelMask,
1856 &desc->mLatency,
1857 desc->mFlags);
1858 if (!output) {
1859 ALOGW("openOutput_l() could not open output for device 0x%08x",
1860 devices);
1861 delete desc;
1862 return 0;
1863 }
1864
1865 if (desc->isDirectOutput()) {
1866 if (profile->hasDynamicParams()) {
1867 // It's important to keep the original profile intact because it has
1868 // information about what parameters are dynamic
1869 IOProfile dynamicProfile = *profile;
1870 queryOutputParameters(output, &dynamicProfile);
1871 devices &= profile->mSupportedDevices;
1872 // Close and re-open the port with new parameters if its profile
1873 // supports the requested parameters
1874 if (dynamicProfile.isCompatibleProfile(devices, samplingRate, format,
1875 channelMask, flags)) {
1876 mpClientInterface->closeOutput(output);
1877 desc->mDevice = devices;
1878 desc->mSamplingRate = samplingRate;
1879 desc->mFormat = (audio_format_t)format;
1880 desc->mChannelMask = channelMask;
1881 desc->mLatency = 0;
1882 output = mpClientInterface->openOutput(dynamicProfile.mModule->mHandle,
1883 &desc->mDevice,
1884 &desc->mSamplingRate,
1885 &desc->mFormat,
1886 &desc->mChannelMask,
1887 &desc->mLatency,
1888 desc->mFlags);
1889 if (!output) {
1890 ALOGE("openOutput_l() could not re-open direct output");
1891 delete desc;
1892 return 0;
1893 }
1894 }
1895 }
1896 if ((samplingRate && (samplingRate != desc->mSamplingRate)) ||
1897 (format && (format != desc->mFormat)) ||
1898 (channelMask && (channelMask != desc->mChannelMask))) {
1899 ALOGV("openOutput_l() params mismatch");
1900 mpClientInterface->closeOutput(output);
1901 output = 0;
1902 delete desc;
1903 }
1904 }
1905
1906 if (output) {
1907 ALOGV("openOutput_l() adding output %d", output);
1908 addOutput(output, desc);
1909 setDeviceAddress(output, desc->device());
1910 }
1911
1912 return output;
1913}
1914
1915audio_io_handle_t AudioPolicyManager::openOutput(audio_devices_t devices,
1916 uint32_t samplingRate,
1917 uint32_t format,
1918 uint32_t channelMask,
1919 audio_output_flags_t flags)
1920{
1921 ALOGVV("openOutput() devices 0x%08x", devices);
1922
1923 if (devices == AUDIO_DEVICE_NONE) {
1924 ALOGE("openOutput() invalid device 0x%08x", devices);
1925 return BAD_VALUE;
1926 }
1927
1928 audio_io_handle_t output = 0;
1929 AudioOutputDescriptor *desc;
1930
1931 // First look in the active outputs
1932 for (size_t i = 0; i < mOutputs.size(); i++) {
1933 desc = mOutputs.valueAt(i);
1934
1935 // Skip duplicating outputs
1936 if (desc->isDuplicated())
1937 continue;
1938
1939 // Skip outputs that don't match the requested flags
1940 if ((flags & AUDIO_OUTPUT_FLAG_DIRECT) !=
1941 (desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT))
1942 continue;
1943
1944 // Direct outputs cannot mix the new stream, but can be moved to
1945 // a different track
1946 if (desc->isDirectOutput() && (desc->mUsers > 1))
1947 continue;
1948
1949 if (devices & desc->supportedDevices()) {
1950 output = mOutputs.keyAt(i);
1951 // Direct outputs can be reassigned only if requested parameters
1952 // are the same than those of the open output
1953 if (desc->isDirectOutput() &&
1954 (samplingRate == desc->mSamplingRate) &&
1955 (channelMask == desc->mChannelMask) &&
1956 (format == desc->mFormat)) {
1957 ALOGV("openOutput() direct output %d will be reused", output);
1958 break;
1959 }
1960 }
1961 }
1962
1963 // Look in other profiles that can route to the requested devices
1964 if (!output) {
1965 SortedVector<IOProfile*> profiles;
1966 getProfilesForDevices(devices, profiles);
1967 if (profiles.isEmpty()) {
1968 ALOGE("openOutput() no profile available for devices 0x%08x", devices);
1969 return 0;
1970 }
1971
1972 for (size_t i = 0; i < profiles.size(); i++) {
1973 IOProfile *profile = profiles.itemAt(i);
1974 output = openOutput_l(profile, devices, flags,
1975 samplingRate, format, channelMask);
1976 if (output)
1977 break;
1978 }
1979 }
1980
1981 // Increase use count if a valid output was found
1982 if (output) {
1983 desc = mOutputs.valueFor(output);
1984 ALOGV("openOutput() output %d users %u->%u",
1985 output, desc->mUsers, desc->mUsers+1);
1986 desc->mUsers++;
1987 }
1988
1989 ALOGV("openOutput() got output %d", output);
1990
1991 return output;
1992}
1993
1994audio_io_handle_t AudioPolicyManager::openDuplicateOutput(SortedVector<audio_io_handle_t> &outputs,
1995 uint32_t samplingRate,
1996 uint32_t format,
1997 uint32_t channelMask,
1998 int session)
1999{
2000 audio_io_handle_t dupOutput;
2001 audio_io_handle_t outs[outputs.size()];
2002 uint32_t idx = 0;
2003
2004 ALOGV("openDuplicateOutput() open output to duplicate to %d more outputs",
2005 outputs.size());
2006
2007 for (size_t i = 0; i < outputs.size(); i++) {
2008 outs[idx++] = outputs.itemAt(i);
2009 ALOGV("openDuplicateOutput() duplicate to output %d", outputs.itemAt(i));
2010 }
2011
2012 dupOutput = mpClientInterface->openDuplicateOutput(outs, outputs.size());
2013 if (!dupOutput) {
2014 ALOGE("openDuplicateOutput() could not open duplicated output");
2015 return 0;
2016 }
2017
2018 // Add duplicated output descriptor
2019 AudioOutputDescriptor *dupDesc = new AudioOutputDescriptor(NULL);
2020 for (size_t i = 0; i < outputs.size(); i++) {
2021 dupDesc->mDupOutputs.add(mOutputs.valueFor(outputs.itemAt(i)));
2022 }
2023 dupDesc->mSamplingRate = samplingRate;
2024 dupDesc->mFormat = (audio_format_t)format;
2025 dupDesc->mChannelMask = channelMask;
2026
2027 addOutput(dupOutput, dupDesc);
2028
2029 ALOGV("openDuplicateOutput() output %d users %u->%u",
2030 dupOutput, dupDesc->mUsers, dupDesc->mUsers+1);
2031 dupDesc->mUsers++;
2032
2033 ALOGV("openDuplicateOutput() got output %d", dupOutput);
2034
2035 return dupOutput;
2036}
2037
2038void AudioPolicyManager::addOutput(audio_io_handle_t id,
2039 AudioOutputDescriptor *outputDesc)
2040{
2041 outputDesc->mId = id;
2042 mOutputs.add(id, outputDesc);
2043}
2044
2045void AudioPolicyManager::closeOutput(audio_io_handle_t output)
2046{
2047 ALOGV("closeOutput() output %d", output);
2048
2049 AudioOutputDescriptor *desc = mOutputs.valueFor(output);
2050 if (!desc) {
2051 ALOGE("closeOutput() unknown output %d", output);
2052 return;
2053 }
2054
2055 // Output appears to be already closed
2056 if (!desc->mUsers) {
2057 ALOGW("closeOutput() invalid count %d for output %d",
2058 desc->mUsers, output);
2059 return;
2060 }
2061
2062 // Look for duplicated outputs connected to the output being removed
2063 if (desc->isDuplicated() && (desc->mUsers == 1)) {
2064 for (size_t i = 0; i < desc->mDupOutputs.size(); i++) {
2065 audio_io_handle_t dupOutput = desc->mDupOutputs.itemAt(i)->mId;
2066 if (dupOutput)
2067 closeOutput(dupOutput);
2068 else
2069 ALOGW("closeOutput() unexpected duplicated output %d", dupOutput);
2070 }
2071 }
2072
2073 ALOGV("closeOutput() output %d users %u->%u",
2074 output, desc->mUsers, desc->mUsers-1);
2075 desc->mUsers--;
2076
2077 if (!desc->mUsers) {
2078 AudioParameter param;
2079 param.add(String8("closing"), String8("true"));
2080 mpClientInterface->setParameters(output, param.toString());
2081 mpClientInterface->closeOutput(output);
2082 delete desc;
2083 mOutputs.removeItem(output);
2084 }
2085}
2086
2087void AudioPolicyManager::setOutputDevice(audio_io_handle_t output,
2088 audio_devices_t device,
2089 bool force,
2090 int delayMs)
2091{
2092 AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
2093 AudioParameter param;
2094
2095 ALOGV("setOutputDevice() output %d device 0x%08x delayMs %d",
2096 output, device, delayMs);
2097
2098 // The duplicating output passes the new device selection to the
2099 // connected outputs since they are the ones actually connected
2100 // to the audio hardware
2101 if (outputDesc->isDuplicated()) {
2102 for (size_t i = 0; i < outputDesc->mDupOutputs.size(); i++) {
2103 AudioOutputDescriptor *dupDesc = outputDesc->mDupOutputs.itemAt(i);
2104 if (dupDesc)
2105 setOutputDevice(dupDesc->mId, dupDesc->mDevice, force, delayMs);
2106 }
2107 return;
2108 }
2109
2110 // No need to proceed if new device is valid but not supported by the
2111 // current output profile
2112 if (device && !(device & outputDesc->mProfile->mSupportedDevices))
2113 return;
2114
2115 // filter devices according to output selected
2116 device = (audio_devices_t)(device & outputDesc->mProfile->mSupportedDevices);
2117
2118 audio_devices_t prevDevice = outputDesc->device();
2119
2120 // Do not change the routing if:
2121 // - the requested device is AUDIO_DEVICE_NONE
2122 // - the requested device is the same as current device and force is not specified.
2123 // Doing this check here allows the caller to call setOutputDevice() without conditions
2124 if (((device == AUDIO_DEVICE_NONE) || (device == prevDevice)) && !force) {
2125 ALOGV("setOutputDevice() setting same device 0x%08x for output %d",
2126 device, output);
2127 return;
2128 }
2129
2130 outputDesc->mDevice = device;
2131
2132 // Mute while transitioning to the new selected devices prevents volume bursts
2133 // when volume for the old device(s) and new device(s) are different.
2134 // The volume that is restored may have changed due if the new devices have
2135 // different volume curve.
2136 if (getDeviceForVolume(prevDevice) != getDeviceForVolume(device)) {
2137 // Mute takes place immediately
2138 muteOutput(output, true, 0);
2139 // Unmute after device has been changed
2140 muteOutput(output, false, delayMs * 2);
2141 }
2142
2143 // Do the routing
2144 ALOGI("setOutputDevice() changing device to 0x%08x", device);
2145 param.addInt(String8(AudioParameter::keyRouting), (int)device);
2146 mpClientInterface->setParameters(output, param.toString(), delayMs);
2147}
2148
2149void AudioPolicyManager::muteOutput(audio_io_handle_t output,
2150 bool mute,
2151 int delayMs)
2152{
2153 AudioOutputDescriptor *desc = mOutputs.valueFor(output);
2154 audio_devices_t devices = desc->device();
2155
2156 ALOGV("muteOutput() %s output %d devices 0x%08x",
2157 mute ? "mute" : "unmute", output, devices);
2158
2159 // Nothing to do
2160 if (devices == AUDIO_DEVICE_NONE)
2161 return;
2162
2163 // Caller must ensure muteOutput() is called on each connected output
2164 // in order to have more granular volume per output
2165 if (desc->isDuplicated()) {
2166 ALOGW("muteOutput() cannot mute duplicating outputs");
2167 return;
2168 }
2169
2170 // Volume after unmuting is selected based on the most relevant device
2171 // for volume settings
2172 devices = getDeviceForVolume(devices);
2173
2174 for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {
2175 setStreamMute(stream, mute, output, mute ? 0 : delayMs, devices);
2176 }
2177}
2178
2179status_t AudioPolicyManager::moveTracks(audio_io_handle_t output,
2180 audio_devices_t oldDevices,
2181 audio_devices_t newDevices)
2182{
2183 // Move tracks if the output is open and devices have changed
2184 if (output && (oldDevices != newDevices)) {
2185 ALOGV("moveTracks() invalidate tracks on output %d", output);
2186 // Invalidate all tracks associated with this output
2187 for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) {
2188 mpClientInterface->setStreamOutput((AudioSystem::stream_type)i,
2189 output);
2190 }
2191 }
2192
2193 return NO_ERROR;
2194}
2195
2196audio_devices_t AudioPolicyManager::getZoneSupportedDevices(audio_zones_t zone)
2197{
2198 if (!audio_is_output_zone(zone)) {
2199 ALOGE("getZoneSupportedDevices() zone 0x%x is invalid", zone);
2200 return AUDIO_DEVICE_NONE;
2201 }
2202
2203 ssize_t index = mZoneAffinity.indexOfKey(zone);
2204 if (index < 0) {
2205 ALOGE("getZoneSupportedDevices() zone 0x%x has affinity information", zone);
2206 return AUDIO_DEVICE_NONE;
2207 }
2208
2209 audio_devices_t devices = mZoneAffinity.valueAt(index);
2210
2211 ALOGV("getZoneSupportedDevices() zone 0x%x supports devices 0x%08x", zone, devices);
2212
2213 return devices;
2214}
2215
2216audio_devices_t AudioPolicyManager::getPrimaryDevices()
2217{
2218 return mAttachedOutputDevices;
2219}
2220
2221audio_devices_t AudioPolicyManager::getRefinedZoneDevices(audio_zones_t zones,
2222 AudioSystem::stream_type stream)
2223{
2224 audio_devices_t devices = getZoneDevices(zones);
2225
2226 // Refine zone devices based on the stream type, in case it's not required
2227 // to be routed to all its devices (e.g. voice call is restricted to cabin
2228 // speakers).
2229 switch (stream) {
2230 case AudioSystem::DTMF:
2231 case AudioSystem::BLUETOOTH_SCO:
2232 case AudioSystem::VOICE_CALL:
2233 if (devices & AUDIO_DEVICE_OUT_SPEAKER)
2234 devices = AUDIO_DEVICE_OUT_SPEAKER;
2235 break;
2236 default:
2237 break;
2238 }
2239
2240 return devices;
2241}
2242
2243audio_devices_t AudioPolicyManager::getSessionDevices(int session)
2244{
2245 audio_devices_t devices;
2246
2247 ssize_t index = mSessions.indexOfKey(session);
2248 if (index < 0) {
2249 ALOGV("getSessionDevices() session %d is not active", session);
2250 devices = AUDIO_DEVICE_NONE;
2251 } else {
2252 SessionDescriptor *sessionDesc = mSessions.valueAt(index);
2253 devices = sessionDesc->devices();
2254 ALOGV("getSessionDevices() session %d devices 0x%08x", session, devices);
2255 }
2256
2257 return devices;
2258}
2259
2260audio_io_handle_t AudioPolicyManager::findOutput(audio_devices_t device)
2261{
2262 audio_io_handle_t output = 0;
2263
2264 for (size_t i = 0; i < mOutputs.size(); i++) {
2265 AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
2266 if (!outputDesc->isDuplicated() &&
2267 (outputDesc->device() & device)) {
2268 output = outputDesc->mId;
2269 break;
2270 }
2271 }
2272
2273 return output;
2274}
2275
2276audio_zones_t AudioPolicyManager::findZone(audio_devices_t device)
2277{
2278 audio_zones_t zone = AUDIO_ZONE_NONE;
2279
2280 if (popcount(device) > 1) {
2281 ALOGE("findZone() expected only one device, got 0x%08x", device);
2282 return AUDIO_ZONE_NONE;
2283 }
2284
2285 for (size_t i = 0; i < mZoneDevices.size(); i++) {
2286 if (mZoneDevices.valueAt(i) & device) {
2287 zone = mZoneDevices.keyAt(i);
2288 break;
2289 }
2290 }
2291
2292 return zone;
2293}
2294
2295void AudioPolicyManager::findOutputsInZone(audio_io_handle_t output,
2296 audio_zones_t zone,
2297 SortedVector<audio_io_handle_t> &outputs)
2298{
2299 AudioOutputDescriptor *desc = mOutputs.valueFor(output);
2300
2301 if (AudioSystem::popCount(zone) > 1) {
2302 ALOGE("findOutputsInZone() cannot find multiple zones simultaneously");
2303 return;
2304 }
2305
2306 if (desc->isDuplicated()) {
2307 audio_devices_t devices = getZoneDevices(zone);
2308
2309 for (size_t i = 0; i < desc->mDupOutputs.size(); i++) {
2310 AudioOutputDescriptor *dupDesc = desc->mDupOutputs.itemAt(i);
2311 if (devices & dupDesc->device()) {
2312 outputs.add(dupDesc->mId);
2313 }
2314 }
2315 } else {
2316 outputs.add(output);
2317 }
2318
2319 ALOGV("findOutputsInZone() found %u outputs in zone 0x%x", outputs.size(), zone);
2320}
2321
2322void AudioPolicyManager::clearSession(int session)
2323{
2324 ALOGV("clearSession() session %d", session);
2325
2326 ssize_t index = mSessions.indexOfKey(session);
2327 if (index < 0) {
2328 ALOGW("clearSession() session %d is not registered", session);
2329 } else {
2330 // Remove session routes and volumes
2331 SessionDescriptor *sessionDesc = mSessions.valueAt(index);
2332 delete sessionDesc;
2333 mSessions.removeItem(session);
2334 }
2335}
2336
2337status_t AudioPolicyManager::disconnectDevice(audio_devices_t device)
2338{
2339 // Find the listening zone affected by the device disconnection
2340 audio_zones_t zone = findZone(device);
2341
2342 ALOGI("disconnectDevice() zone 0x%x device 0x%08x", zone, device);
2343
2344 // The disconnected device was not assigned to a listening zone
2345 if (zone == AUDIO_ZONE_NONE) {
2346 ALOGW("disconnectDevice() device 0x%08x is not assigned to a zone, "
2347 "cannot disconnect", device);
2348 return INVALID_OPERATION;
2349 }
2350
2351 if (device & mAttachedOutputDevices) {
2352 ALOGE("disconnectDevice() attached devices 0x%08x cannot be disconnected",
2353 device & mAttachedOutputDevices);
2354 return INVALID_OPERATION;
2355 }
2356
2357 // Update the devices of the listening zone
2358 setZoneDevices_l(zone, getZoneDevices(zone) & ~device);
2359
2360 // Find the audio sessions affected by the device disconnection
2361 for (size_t i = 0; i < mSessions.size(); i++) {
2362 SessionDescriptor *sessionDesc = mSessions.valueAt(i);
2363
2364 // Skip sessions not rendering to the disconnected device
2365 if (!(sessionDesc->devices() & device))
2366 continue;
2367
2368 ALOGV("disconnectDevice() session %d device 0x%08x",
2369 sessionDesc->sessionId(), device);
2370
2371 sessionDesc->mDevices &= getZoneDevices(zone);
2372
2373 // Move all tracks in the output
2374 moveTracks(sessionDesc->mId, 0, sessionDesc->devices());
2375 }
2376
2377 return NO_ERROR;
2378}
2379
2380void AudioPolicyManager::selectZoneForStrategy(routing_strategy strategy,
2381 audio_zones_t &zones,
2382 audio_devices_t &devices)
2383{
2384 zones = AUDIO_ZONE_NONE;
2385 devices = AUDIO_DEVICE_NONE;
2386
2387 switch (strategy) {
2388 case STRATEGY_MEDIA:
2389 break;
2390
2391 case STRATEGY_DTMF:
2392 case STRATEGY_SONIFICATION:
2393 case STRATEGY_SONIFICATION_RESPECTFUL:
2394 zones = AUDIO_ZONE_CABIN;
2395 devices = getZoneDevices(zones);
2396 break;
2397
2398 case STRATEGY_PHONE:
2399 // Calls go strictly to speaker, not all cabin zone devices
2400 if (mAttachedOutputDevices & AUDIO_DEVICE_OUT_SPEAKER) {
2401 devices = AUDIO_DEVICE_OUT_SPEAKER;
2402 zones = findZone(devices);
2403 }
2404 break;
2405
2406 case STRATEGY_ENFORCED_AUDIBLE:
2407 zones = AUDIO_ZONE_ALL;
2408 devices = getZoneDevices(zones);
2409 break;
2410
2411 default:
2412 break;
2413 }
2414
2415 ALOGV("selectZoneForStrategy() zones 0x%x devices 0x%08x", zones, devices);
2416}
2417
2418void AudioPolicyManager::selectZoneForStream(AudioSystem::stream_type stream,
2419 audio_zones_t &zones,
2420 audio_devices_t &devices)
2421{
2422 zones = AUDIO_ZONE_NONE;
2423 devices = AUDIO_DEVICE_NONE;
2424
2425 switch (stream) {
2426 case AudioSystem::ENFORCED_AUDIBLE:
2427 zones = AUDIO_ZONE_ALL;
2428 devices = getZoneDevices(zones);
2429 break;
2430
2431 case AudioSystem::DTMF:
2432 case AudioSystem::TTS:
2433 case AudioSystem::SYSTEM:
2434 case AudioSystem::RING:
2435 case AudioSystem::ALARM:
2436 case AudioSystem::NOTIFICATION:
2437 zones = AUDIO_ZONE_CABIN;
2438 devices = getZoneDevices(zones);
2439 break;
2440
2441 case AudioSystem::BLUETOOTH_SCO:
2442 case AudioSystem::VOICE_CALL:
2443 // Calls go strictly to speaker, not all cabin zone devices
2444 zones = AUDIO_ZONE_CABIN;
2445 devices = getZoneDevices(zones);
2446 if (devices & AUDIO_DEVICE_OUT_SPEAKER)
2447 devices = AUDIO_DEVICE_OUT_SPEAKER;
2448 break;
2449
2450 case AudioSystem::MUSIC:
2451 default:
2452 // Any listening zone is equally valid for music streams,
2453 // none is chosen to let the next selection mechanism execute
2454 break;
2455 }
2456
2457 ALOGV("selectZoneForStream() zones 0x%x devices 0x%08x", zones, devices);
2458}
2459
2460void AudioPolicyManager::selectZones(int session,
2461 AudioSystem::stream_type stream)
2462{
2463 audio_zones_t zones = AUDIO_ZONE_NONE;
2464 audio_devices_t devices = AUDIO_DEVICE_NONE;
2465
2466 // First option: zones explicitly requested
2467 ssize_t index = mSessions.indexOfKey(session);
2468 if (index >= 0) {
2469 // Zones and devices are already populated
2470 zones = getSessionZones(session);
2471 ALOGV_IF(zones != AUDIO_ZONE_NONE,
2472 "selectZones() session %d got zone from descriptor", session);
2473 return;
2474 }
2475
2476 // Second option: best zones for strategy
2477 if (zones == AUDIO_ZONE_NONE) {
2478 selectZoneForStrategy(getStrategy(stream), zones, devices);
2479 ALOGV_IF(zones != AUDIO_ZONE_NONE,
2480 "selectZones() session %d got zone from strategy", session);
2481 }
2482
2483 // Third option: best zones for stream type
2484 if (zones == AUDIO_ZONE_NONE) {
2485 selectZoneForStream(stream, zones, devices);
2486 ALOGV_IF(zones != AUDIO_ZONE_NONE,
2487 "selectZones() session %d got zone from stream type", session);
2488 }
2489
2490 // Fourth option: cabin
2491 if (zones == AUDIO_ZONE_NONE) {
2492 zones = AUDIO_ZONE_CABIN;
2493 devices = getZoneDevices(zones);
2494 ALOGV("selectZones() session %d got default zone", session);
2495 }
2496
2497 ALOGV("selectZones() session %d got zones 0x%x devices 0x%08x",
2498 session, zones, devices);
2499
2500 // Create an session descriptor with the selected zone(s) and device(s)
2501 mSessions.add(session, new SessionDescriptor(session, 0, zones, devices));
2502}
2503
2504const AudioPolicyManager::VolumeCurvePoint
2505 AudioPolicyManager::sDefaultVolumeCurve[AudioPolicyManager::VOLCNT] = {
2506 {1, -49.5f}, {33, -33.5f}, {66, -17.0f}, {100, 0.0f}
2507};
2508
2509const AudioPolicyManager::VolumeCurvePoint
2510 AudioPolicyManager::sDefaultMediaVolumeCurve[AudioPolicyManager::VOLCNT] = {
2511 {1, -58.0f}, {20, -40.0f}, {60, -17.0f}, {100, 0.0f}
2512};
2513
2514const AudioPolicyManager::VolumeCurvePoint
2515 AudioPolicyManager::sSpeakerMediaVolumeCurve[AudioPolicyManager::VOLCNT] = {
2516 {1, -56.0f}, {20, -34.0f}, {60, -11.0f}, {100, 0.0f}
2517};
2518
2519const AudioPolicyManager::VolumeCurvePoint
2520 AudioPolicyManager::sSpeakerSonificationVolumeCurve[AudioPolicyManager::VOLCNT] = {
2521 {1, -29.7f}, {33, -20.1f}, {66, -10.2f}, {100, 0.0f}
2522};
2523
2524// AUDIO_STREAM_SYSTEM, AUDIO_STREAM_ENFORCED_AUDIBLE and AUDIO_STREAM_DTMF volume tracks
2525// AUDIO_STREAM_RING on phones and AUDIO_STREAM_MUSIC on tablets (See AudioService.java).
2526// The range is constrained between -24dB and -6dB over speaker and -30dB and -18dB over headset.
2527const AudioPolicyManager::VolumeCurvePoint
2528 AudioPolicyManager::sDefaultSystemVolumeCurve[AudioPolicyManager::VOLCNT] = {
2529 {1, -24.0f}, {33, -18.0f}, {66, -12.0f}, {100, -6.0f}
2530};
2531
2532const AudioPolicyManager::VolumeCurvePoint
2533 AudioPolicyManager::sHeadsetSystemVolumeCurve[AudioPolicyManager::VOLCNT] = {
2534 {1, -30.0f}, {33, -26.0f}, {66, -22.0f}, {100, -18.0f}
2535};
2536
2537const AudioPolicyManager::VolumeCurvePoint
2538 AudioPolicyManager::sDefaultVoiceVolumeCurve[AudioPolicyManager::VOLCNT] = {
2539 {0, -42.0f}, {33, -28.0f}, {66, -14.0f}, {100, 0.0f}
2540};
2541
2542const AudioPolicyManager::VolumeCurvePoint
2543 AudioPolicyManager::sSpeakerVoiceVolumeCurve[AudioPolicyManager::VOLCNT] = {
2544 {0, -24.0f}, {33, -16.0f}, {66, -8.0f}, {100, 0.0f}
2545};
2546
2547const AudioPolicyManager::VolumeCurvePoint
2548*AudioPolicyManager::sVolumeProfiles[AUDIO_STREAM_CNT]
2549 [AudioPolicyManager::DEVICE_CATEGORY_CNT] = {
2550 { // AUDIO_STREAM_VOICE_CALL
2551 sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET
2552 sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2553 sDefaultVoiceVolumeCurve // DEVICE_CATEGORY_EARPIECE
2554 },
2555 { // AUDIO_STREAM_SYSTEM
2556 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
2557 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2558 sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE
2559 },
2560 { // AUDIO_STREAM_RING
2561 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
2562 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2563 sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE
2564 },
2565 { // AUDIO_STREAM_MUSIC
2566 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
2567 sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2568 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EARPIECE
2569 },
2570 { // AUDIO_STREAM_ALARM
2571 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
2572 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2573 sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE
2574 },
2575 { // AUDIO_STREAM_NOTIFICATION
2576 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
2577 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2578 sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE
2579 },
2580 { // AUDIO_STREAM_BLUETOOTH_SCO
2581 sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET
2582 sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2583 sDefaultVoiceVolumeCurve // DEVICE_CATEGORY_EARPIECE
2584 },
2585 { // AUDIO_STREAM_ENFORCED_AUDIBLE
2586 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
2587 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2588 sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE
2589 },
2590 { // AUDIO_STREAM_DTMF
2591 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
2592 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2593 sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE
2594 },
2595 { // AUDIO_STREAM_TTS
2596 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
2597 sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
2598 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EARPIECE
2599 },
2600};
2601
2602void AudioPolicyManager::initializeVolumeCurves()
2603{
2604 for (int i = 0; i < AUDIO_STREAM_CNT; i++) {
2605 for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) {
2606 mStreams[i].mVolumeCurve[j] = sVolumeProfiles[i][j];
2607 }
2608 }
2609}
2610
2611float AudioPolicyManager::computeVolume(int stream,
2612 int index,
2613 audio_io_handle_t output,
2614 audio_devices_t device)
2615{
2616 float volume = 1.0;
2617 AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
2618 StreamDescriptor &streamDesc = mStreams[stream];
2619
2620 if (device == AUDIO_DEVICE_NONE)
2621 device = outputDesc->device();
2622
2623 // if volume is not 0 (not muted), force media volume to max on digital output
2624 if (stream == AudioSystem::MUSIC &&
2625 index != mStreams[stream].mIndexMin &&
2626 (device == AUDIO_DEVICE_OUT_AUX_DIGITAL ||
2627 device == AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET ||
2628 device == AUDIO_DEVICE_OUT_USB_ACCESSORY ||
2629 device == AUDIO_DEVICE_OUT_USB_DEVICE)) {
2630 return 1.0;
2631 }
2632
2633 volume = volIndexToAmpl(device, streamDesc, index);
2634
2635 // Always attenuate ringtones and notifications volume by 6dB with a minimum threshold
2636 // at -36d so that notification is always perceived
2637 const routing_strategy stream_strategy = getStrategy((AudioSystem::stream_type)stream);
2638 if ((device & (AUDIO_DEVICE_OUT_BLUETOOTH_A2DP |
2639 AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
2640 AUDIO_DEVICE_OUT_WIRED_HEADSET |
2641 AUDIO_DEVICE_OUT_WIRED_HEADPHONE |
2642 AUDIO_DEVICE_OUT_WIRED_HEADPHONE2)) &&
2643 ((stream_strategy == STRATEGY_SONIFICATION) ||
2644 (stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL) ||
2645 (stream == AudioSystem::SYSTEM) ||
2646 ((stream_strategy == STRATEGY_ENFORCED_AUDIBLE) &&
2647 (mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_NONE))) &&
2648 streamDesc.mCanBeMuted) {
2649 volume *= SONIFICATION_HEADSET_VOLUME_FACTOR;
2650 float minVol = (volume > SONIFICATION_HEADSET_VOLUME_MIN) ?
2651 volume : SONIFICATION_HEADSET_VOLUME_MIN;
2652 if (volume > minVol) {
2653 volume = minVol;
2654 ALOGV("computeVolume() limiting volume to %f (was %f)", minVol, volume);
2655 }
2656 }
2657
2658 ALOGV("computeVolume() output %d stream %d index %d devices 0x%08x volume %f",
2659 output, stream, index, device, volume);
2660
2661 return volume;
2662}
2663
2664float AudioPolicyManager::volIndexToAmpl(audio_devices_t device,
2665 const StreamDescriptor& streamDesc,
2666 int indexInUi)
2667{
2668 device_category deviceCategory = getDeviceCategory(device);
2669 const VolumeCurvePoint *curve = streamDesc.mVolumeCurve[deviceCategory];
2670
2671 // The volume index in the UI is relative to the min and max volume
2672 // indices for this stream type
2673 int nbSteps = 1 + curve[VOLMAX].mIndex - curve[VOLMIN].mIndex;
2674 int volIdx = (nbSteps * (indexInUi - streamDesc.mIndexMin)) /
2675 (streamDesc.mIndexMax - streamDesc.mIndexMin);
2676
2677 // Find what part of the curve this index volume belongs to or if
2678 // it's out of bounds
2679 int segment = 0;
2680 if (volIdx < curve[VOLMIN].mIndex) { // out of bounds
2681 return 0.0f;
2682 } else if (volIdx < curve[VOLKNEE1].mIndex) {
2683 segment = 0;
2684 } else if (volIdx < curve[VOLKNEE2].mIndex) {
2685 segment = 1;
2686 } else if (volIdx <= curve[VOLMAX].mIndex) {
2687 segment = 2;
2688 } else { // out of bounds
2689 return 1.0f;
2690 }
2691
2692 // Linear interpolation in the attenuation table in dB
2693 float decibels = curve[segment].mDBAttenuation +
2694 ((float)(volIdx - curve[segment].mIndex)) *
2695 ( (curve[segment+1].mDBAttenuation -
2696 curve[segment].mDBAttenuation) /
2697 ((float)(curve[segment+1].mIndex -
2698 curve[segment].mIndex)) );
2699
2700 float amplification = exp( decibels * 0.115129f); // exp( dB * ln(10) / 20 )
2701
2702 ALOGVV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f] ampl=%.5f",
2703 curve[segment].mIndex, volIdx,
2704 curve[segment+1].mIndex,
2705 curve[segment].mDBAttenuation,
2706 decibels,
2707 curve[segment+1].mDBAttenuation,
2708 amplification);
2709
2710 return amplification;
2711}
2712
2713status_t AudioPolicyManager::setVolume(int stream,
2714 audio_io_handle_t output,
2715 int delayMs)
2716{
2717 return setVolume_l(stream, output, false, delayMs);
2718}
2719
2720status_t AudioPolicyManager::muteVolume(int stream,
2721 audio_io_handle_t output,
2722 int delayMs)
2723{
2724 return setVolume_l(stream, output, true, delayMs);
2725}
2726
2727status_t AudioPolicyManager::setVolume_l(int stream,
2728 audio_io_handle_t output,
2729 bool mute,
2730 int delayMs)
2731{
2732 AudioOutputDescriptor *desc = mOutputs.valueFor(output);
2733 status_t status;
2734
2735 ALOGV("setVolume_l() output %d stream %d mute %d delayMs %d",
2736 output, stream, mute, delayMs);
2737
2738 if (desc->isDuplicated())
2739 status = setDuplicatingVolume(stream, output, mute, delayMs);
2740 else
2741 status = setStreamVolume(stream, output, mute, delayMs);
2742
2743 return status;
2744}
2745
2746status_t AudioPolicyManager::setStreamVolume(int stream,
2747 audio_io_handle_t output,
2748 bool mute,
2749 int delayMs)
2750{
2751 AudioOutputDescriptor *desc = mOutputs.valueFor(output);
2752
2753 // Select the most relevant device for volume computation
2754 audio_devices_t device = getDeviceForVolume(desc->device());
2755
2756 int index = mute ? 0 : mStreams[stream].mIndexCur;
2757
2758 ALOGV("setStreamVolume() output %d stream %d index %d delayMs %d",
2759 output, stream, index, delayMs);
2760
2761 // Do not change actual stream volume if the stream is muted
2762 if (desc->mMuteCount[stream] != 0) {
2763 ALOGV("setStreamVolume() stream %d muted count %d",
2764 stream, desc->mMuteCount[stream]);
2765 return NO_ERROR;
2766 }
2767
2768 float volume = computeVolume(stream, index, output, device);
2769 if (volume != desc->mCurVolume[stream]) {
2770 desc->mCurVolume[stream] = volume;
2771
2772 ALOGV("setStreamVolume() for output %d stream %d, volume %f, delay %d",
2773 output, stream, volume, delayMs);
2774
2775 // Force VOICE_CALL to track BLUETOOTH_SCO stream volume when
2776 // bluetooth audio is enabled
2777 if (stream == AudioSystem::BLUETOOTH_SCO) {
2778 mpClientInterface->setStreamVolume(AudioSystem::VOICE_CALL,
2779 volume, output, delayMs);
2780 }
2781 mpClientInterface->setStreamVolume((AudioSystem::stream_type)stream,
2782 volume, output, delayMs);
2783 }
2784
2785 if (stream == AudioSystem::VOICE_CALL ||
2786 stream == AudioSystem::BLUETOOTH_SCO) {
2787 // Force voice volume to max for bluetooth SCO as volume is managed by
2788 // the headset
2789 float voiceVolume;
2790 if (stream == AudioSystem::VOICE_CALL) {
2791 voiceVolume = (float)index/(float)mStreams[stream].mIndexMax;
2792 } else {
2793 voiceVolume = 1.0;
2794 }
2795
2796 if (voiceVolume != mLastVoiceVolume && output == mPrimaryOutput) {
2797 mpClientInterface->setVoiceVolume(voiceVolume, delayMs);
2798 mLastVoiceVolume = voiceVolume;
2799 }
2800 }
2801
2802 return NO_ERROR;
2803}
2804
2805status_t AudioPolicyManager::setDuplicatingVolume(int stream,
2806 audio_io_handle_t output,
2807 bool mute,
2808 int delayMs)
2809{
2810 AudioOutputDescriptor *desc = mOutputs.valueFor(output);
2811
2812 ALOGV("setDuplicatingVolume() output %d stream %d delayMs %d",
2813 output, stream, delayMs);
2814
2815 if (!desc->isDuplicated()) {
2816 ALOGE("setDuplicatingVolume() output %d is not duplicate", output);
2817 return INVALID_OPERATION;
2818 }
2819
2820 // Set the volume for all outputs that are receiving the duplicated data.
2821 // The volume to be set is in the OutputTrack, which only exists for
2822 // duplicating threads
2823 for (size_t i = 0; i < desc->mDupOutputs.size(); i++) {
2824 AudioOutputDescriptor *dupDesc = desc->mDupOutputs.itemAt(i);
2825 if (dupDesc) {
2826 // Select the most relevant device for volume computation
2827 ALOGE("setDuplicatingVolume() output %d device 0x%08x forvol 0x%08x",
2828 dupDesc->mId, dupDesc->device(), getDeviceForVolume(dupDesc->device()));
2829 audio_devices_t device = getDeviceForVolume(dupDesc->device());
2830 int index = mute ? 0 : mStreams[stream].mIndexCur;
2831 float volume;
2832 if (!dupDesc->mMuteCount[stream])
2833 volume = computeVolume(stream, index, output, device);
2834 else
2835 volume = 0;
2836
2837 ALOGV("setDuplicatingVolume() dup output %d devices 0x%08x "
2838 "index %d volume %f", dupDesc->mId, device, index, volume);
2839 mpClientInterface->setDuplicatingVolume(output, dupDesc->mId, volume);
2840 }
2841 }
2842
2843 // The volume for the duplicating output is set to 0dB as its OutputTrack's
2844 // already took care of per-device category volume
2845 for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
2846 mpClientInterface->setStreamVolume((AudioSystem::stream_type)i,
2847 1.0f, output, delayMs);
2848 }
2849
2850 return NO_ERROR;
2851}
2852
2853void AudioPolicyManager::setStreamMute(int stream,
2854 bool on,
2855 audio_io_handle_t output,
2856 int delayMs,
2857 audio_devices_t device)
2858{
2859 StreamDescriptor &streamDesc = mStreams[stream];
2860 AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
2861
2862 if (device == AUDIO_DEVICE_NONE)
2863 device = outputDesc->device();
2864
2865 ALOGV("setStreamMute() stream %d mute %d output %d mMuteCount %d device 0x%08x",
2866 stream, on, output, outputDesc->mMuteCount[stream], device);
2867
2868 if (on) {
2869 if (outputDesc->mMuteCount[stream] == 0) {
2870 if (streamDesc.mCanBeMuted &&
2871 ((stream != AudioSystem::ENFORCED_AUDIBLE) ||
2872 (mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_NONE))) {
2873 muteVolume(stream, output, delayMs);
2874 }
2875 }
2876 // Increment mMuteCount after calling muteVolume() so that volume change
2877 // is not ignored
2878 ALOGV("setStreamMute() output %d stream %d mute %d->%d", output, stream,
2879 outputDesc->mMuteCount[stream], outputDesc->mMuteCount[stream]+1);
2880 outputDesc->mMuteCount[stream]++;
2881 } else {
2882 if (outputDesc->mMuteCount[stream] == 0) {
2883 ALOGW("setStreamMute() unmuting non muted stream!");
2884 return;
2885 }
2886 ALOGV("setStreamMute() output %d stream %d mute %d->%d", output, stream,
2887 outputDesc->mMuteCount[stream], outputDesc->mMuteCount[stream]-1);
2888 if (--outputDesc->mMuteCount[stream] == 0)
2889 setVolume(stream, output, delayMs);
2890 }
2891}
2892
2893void AudioPolicyManager::initSessionVolume(int session)
2894{
2895 // Session 0 is a special case where the output is used only to query
2896 // hardware parameters, no need for volume updates
2897 if (!session)
2898 return;
2899
2900 SessionDescriptor *sessionDesc = mSessions.valueFor(session);
2901 audio_zones_t zones = getSessionZones(session);
2902
2903 for (audio_zones_t zone = AUDIO_ZONE_LAST; zone & AUDIO_ZONE_ALL; zone >>= 1) {
2904 audio_zones_t cur = zone & zones;
2905 if (cur != AUDIO_ZONE_NONE) {
2906 float zoneVolume = mZoneVolume.valueFor(cur);
2907 float sessionVolume = sessionDesc->mVolume.valueFor(cur);
2908 float volume = zoneVolume * sessionVolume;
2909
2910 ALOGI("initSessionVolume() session %d zone 0x%0x "
2911 "zone-vol %f session-vol %f final-vol %f",
2912 session, cur, zoneVolume, sessionVolume, volume);
2913
2914 setSessionVolume_l(session, cur, volume);
2915 }
2916 }
2917}
2918
2919bool AudioPolicyManager::isInCall()
2920{
2921 return isStateInCall(mPhoneState);
2922}
2923
2924bool AudioPolicyManager::isStateInCall(int state) {
2925 return ((state == AudioSystem::MODE_IN_CALL) ||
2926 (state == AudioSystem::MODE_IN_COMMUNICATION));
2927}
2928
2929
2930
2931void AudioPolicyManager::handleIncallSonification(int stream, bool starting, bool stateChange)
2932{
2933 // if the stream pertains to sonification strategy and we are in call we must
2934 // mute the stream if it is low visibility. If it is high visibility, we must play a tone
2935 // in the device used for phone strategy and play the tone if the selected device does not
2936 // interfere with the device used for phone strategy
2937 // if stateChange is true, we are called from setPhoneState() and we must mute or unmute as
2938 // many times as there are active tracks on the output
2939
2940 const routing_strategy stream_strategy = getStrategy((AudioSystem::stream_type)stream);
2941
2942 if ((stream_strategy != STRATEGY_SONIFICATION) &&
2943 (stream_strategy != STRATEGY_SONIFICATION_RESPECTFUL)) {
2944 return;
2945 }
2946
2947 AudioOutputDescriptor *outputDesc = mOutputs.valueFor(mPrimaryOutput);
2948
2949 ALOGV("handleIncallSonification() stream %d starting %d device %x stateChange %d",
2950 stream, starting, outputDesc->mDevice, stateChange);
2951
2952 // nothing to do if output is inactive
2953 if (!outputDesc->mRefCount[stream]) {
2954 return;
2955 }
2956
2957 int muteCount = 1;
2958 if (stateChange) {
2959 muteCount = outputDesc->mRefCount[stream];
2960 }
2961 if (AudioSystem::isLowVisibility((AudioSystem::stream_type)stream)) {
2962 ALOGV("handleIncallSonification() low visibility, muteCount %d", muteCount);
2963 for (int i = 0; i < muteCount; i++) {
2964 setStreamMute(stream, starting, mPrimaryOutput);
2965 }
2966 } else {
2967 ALOGV("handleIncallSonification() high visibility");
2968 if (outputDesc->device() &
2969 getRefinedZoneDevices(AUDIO_ZONE_CABIN, AudioSystem::VOICE_CALL)) {
2970 ALOGV("handleIncallSonification() high visibility muted, muteCount %d",
2971 muteCount);
2972 for (int i = 0; i < muteCount; i++) {
2973 setStreamMute(stream, starting, mPrimaryOutput);
2974 }
2975 }
2976 if (starting) {
2977 mpClientInterface->startTone(ToneGenerator::TONE_SUP_CALL_WAITING,
2978 AudioSystem::VOICE_CALL);
2979 } else {
2980 mpClientInterface->stopTone();
2981 }
2982 }
2983}
2984
2985void AudioPolicyManager::checkA2dpSuspend()
2986{
2987 if (!mHasA2dp) {
2988 return;
2989 }
2990 audio_io_handle_t a2dpOutput = getA2dpOutput();
2991 if (a2dpOutput == 0) {
2992 return;
2993 }
2994
2995 // suspend A2DP output if:
2996 // (NOT already suspended) &&
2997 // ((SCO device is connected &&
2998 // (forced usage for communication || for record is SCO))) ||
2999 // (phone state is ringing || in call)
3000 //
3001 // restore A2DP output if:
3002 // (Already suspended) &&
3003 // ((SCO device is NOT connected ||
3004 // (forced usage NOT for communication && NOT for record is SCO))) &&
3005 // (phone state is NOT ringing && NOT in call)
3006 //
3007 if (mA2dpSuspended) {
3008 if (((mScoDeviceAddress == "") ||
3009 ((mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO) &&
3010 (mForceUse[AudioSystem::FOR_RECORD] != AudioSystem::FORCE_BT_SCO))) &&
3011 ((mPhoneState != AudioSystem::MODE_IN_CALL) &&
3012 (mPhoneState != AudioSystem::MODE_RINGTONE))) {
3013 mpClientInterface->restoreOutput(a2dpOutput);
3014 mA2dpSuspended = false;
3015 }
3016 } else {
3017 if (((mScoDeviceAddress != "") &&
3018 ((mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) ||
3019 (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO))) ||
3020 ((mPhoneState == AudioSystem::MODE_IN_CALL) ||
3021 (mPhoneState == AudioSystem::MODE_RINGTONE))) {
3022
3023 mpClientInterface->suspendOutput(a2dpOutput);
3024 mA2dpSuspended = true;
3025 }
3026 }
3027}
3028
3029audio_io_handle_t AudioPolicyManager::getA2dpOutput()
3030{
3031 if (!mHasA2dp)
3032 return 0;
3033
3034 for (size_t i = 0; i < mOutputs.size(); i++) {
3035 AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i);
3036 if (!outputDesc->isDuplicated() && outputDesc->device() & AUDIO_DEVICE_OUT_ALL_A2DP) {
3037 return mOutputs.keyAt(i);
3038 }
3039 }
3040
3041 return 0;
3042}
3043
3044uint32_t AudioPolicyManager::getMaxEffectsCpuLoad()
3045{
3046 return MAX_EFFECTS_CPU_LOAD;
3047}
3048
3049uint32_t AudioPolicyManager::getMaxEffectsMemory()
3050{
3051 return MAX_EFFECTS_MEMORY;
3052}
3053
3054IOProfile *AudioPolicyManager::getInputProfile(audio_devices_t device,
3055 uint32_t samplingRate,
3056 uint32_t format,
3057 uint32_t channelMask)
3058{
3059 // Choose an input profile based on the requested capture parameters:
3060 // select the first available profile supporting all requested parameters
3061 for (size_t i = 0; i < mHwModules.size(); i++) {
3062 if (mHwModules[i]->mHandle == 0) {
3063 continue;
3064 }
3065 for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++) {
3066 IOProfile *profile = mHwModules[i]->mInputProfiles[j];
3067 if (profile->isCompatibleProfile(device, samplingRate,
3068 format, channelMask,
3069 (audio_output_flags_t)0)) {
3070 return profile;
3071 }
3072 }
3073 }
3074 return NULL;
3075}
3076
3077audio_devices_t AudioPolicyManager::getDeviceForInputSource(int inputSource)
3078{
3079 uint32_t device = AUDIO_DEVICE_NONE;
3080
3081 switch (inputSource) {
3082 case AUDIO_SOURCE_VOICE_UPLINK:
3083 if (mAvailableInputDevices & AUDIO_DEVICE_IN_VOICE_CALL) {
3084 device = AUDIO_DEVICE_IN_VOICE_CALL;
3085 break;
3086 }
3087 // FALL THROUGH
3088
3089 case AUDIO_SOURCE_DEFAULT:
3090 case AUDIO_SOURCE_MIC:
3091 case AUDIO_SOURCE_VOICE_RECOGNITION:
3092 case AUDIO_SOURCE_VOICE_COMMUNICATION:
3093 if (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO &&
3094 mAvailableInputDevices & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) {
3095 device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET;
3096 } else if (mAvailableInputDevices & AUDIO_DEVICE_IN_WIRED_HEADSET) {
3097 device = AUDIO_DEVICE_IN_WIRED_HEADSET;
3098 } else if (mAvailableInputDevices & AUDIO_DEVICE_IN_BUILTIN_MIC) {
3099 device = AUDIO_DEVICE_IN_BUILTIN_MIC;
3100 }
3101 break;
3102 case AUDIO_SOURCE_CAMCORDER:
3103 if (mAvailableInputDevices & AUDIO_DEVICE_IN_BACK_MIC) {
3104 device = AUDIO_DEVICE_IN_BACK_MIC;
3105 } else if (mAvailableInputDevices & AUDIO_DEVICE_IN_BUILTIN_MIC) {
3106 device = AUDIO_DEVICE_IN_BUILTIN_MIC;
3107 }
3108 break;
3109 case AUDIO_SOURCE_VOICE_DOWNLINK:
3110 case AUDIO_SOURCE_VOICE_CALL:
3111 if (mAvailableInputDevices & AUDIO_DEVICE_IN_VOICE_CALL) {
3112 device = AUDIO_DEVICE_IN_VOICE_CALL;
3113 }
3114 break;
3115 case AUDIO_SOURCE_REMOTE_SUBMIX:
3116 if (mAvailableInputDevices & AUDIO_DEVICE_IN_REMOTE_SUBMIX) {
3117 device = AUDIO_DEVICE_IN_REMOTE_SUBMIX;
3118 }
3119 break;
3120 default:
3121 ALOGW("getDeviceForInputSource() invalid input source %d", inputSource);
3122 break;
3123 }
3124
3125 ALOGV("getDeviceForInputSource()input source %d, device %08x", inputSource, device);
3126 return device;
3127}
3128
3129bool AudioPolicyManager::isVirtualInputDevice(audio_devices_t device)
3130{
3131 if ((device & AUDIO_DEVICE_BIT_IN) != 0) {
3132 device &= ~AUDIO_DEVICE_BIT_IN;
3133 if ((popcount(device) == 1) && ((device & ~APM_AUDIO_IN_DEVICE_VIRTUAL_ALL) == 0))
3134 return true;
3135 }
3136 return false;
3137}
3138
3139audio_io_handle_t AudioPolicyManager::getActiveInput(bool ignoreVirtualInputs)
3140{
3141 for (size_t i = 0; i < mInputs.size(); i++) {
3142 const AudioInputDescriptor *inputDesc = mInputs.valueAt(i);
3143 if ((inputDesc->mUsers > 0) &&
3144 (!ignoreVirtualInputs || !isVirtualInputDevice(inputDesc->mDevice))) {
3145 return mInputs.keyAt(i);
3146 }
3147 }
3148 return 0;
3149}
3150
3151// --- AudioOutputDescriptor class implementation
3152
3153AudioPolicyManager::AudioOutputDescriptor::AudioOutputDescriptor(const IOProfile *profile)
3154 : mId(0), mSamplingRate(0), mFormat((audio_format_t)0),
3155 mChannelMask((audio_channel_mask_t)0), mLatency(0),
3156 mFlags((audio_output_flags_t)0), mDevice(AUDIO_DEVICE_NONE),
3157 mUsers(0), mProfile(profile)
3158{
3159 // clear usage count for all stream types
3160 for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) {
3161 mRefCount[i] = 0;
3162 mCurVolume[i] = -1.0;
3163 mMuteCount[i] = 0;
3164 mStopTime[i] = 0;
3165 }
3166 mDupOutputs.clear();
3167 if (profile != NULL) {
3168 mSamplingRate = profile->mSamplingRates[0];
3169 mFormat = profile->mFormats[0];
3170 mChannelMask = profile->mChannelMasks[0];
3171 mFlags = profile->mFlags;
3172 }
3173}
3174
3175audio_devices_t AudioPolicyManager::AudioOutputDescriptor::device() const
3176{
3177 audio_devices_t devices = AUDIO_DEVICE_NONE;
3178
3179 if (isDuplicated()) {
3180 // All devices supported for each individual duplicated output
3181 for (size_t i = 0; i < mDupOutputs.size(); i++) {
3182 AudioOutputDescriptor *dupDesc = mDupOutputs.itemAt(i);
3183 if (dupDesc)
3184 devices |= dupDesc->device();
3185 }
3186 } else {
3187 devices = mDevice;
3188 }
3189
3190 return devices;
3191}
3192
3193uint32_t AudioPolicyManager::AudioOutputDescriptor::latency()
3194{
3195 uint32_t latency = 0;
3196
3197 if (isDuplicated()) {
3198 // Highest latency in all duplicated outputs
3199 for (size_t i = 0; i < mDupOutputs.size(); i++) {
3200 AudioOutputDescriptor *dupDesc = mDupOutputs.itemAt(i);
3201 if (dupDesc) {
3202 latency = (latency > dupDesc->mLatency) ?
3203 latency : dupDesc->mLatency;
3204 }
3205 }
3206 } else {
3207 latency = mLatency;
3208 }
3209
3210 return latency;
3211}
3212
3213void AudioPolicyManager::AudioOutputDescriptor::changeRefCount(AudioSystem::stream_type stream,
3214 int delta)
3215{
3216 // Forward usage count change to attached outputs
3217 if (isDuplicated()) {