summaryrefslogtreecommitdiffstats
blob: ee17fc983b4b3073c1997b68622a4b9e3afa4ecc (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
<?xml version="1.0" encoding="UTF-8"?>
<!-- Copyright (C) 2017 The Android Open Source Project

         Licensed under the Apache License, Version 2.0 (the "License");
         you may not use this file except in compliance with the License.
         You may obtain a copy of the License at

                    http://www.apache.org/licenses/LICENSE-2.0

         Unless required by applicable law or agreed to in writing, software
         distributed under the License is distributed on an "AS IS" BASIS,
         WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
         See the License for the specific language governing permissions and
         limitations under the License.
-->
<!-- TODO: define a targetNamespace. Note that it will break retrocompatibility -->
<xs:schema version="2.0"
           elementFormDefault="qualified"
           attributeFormDefault="unqualified"
           xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <!-- List the config versions supported by audio policy. -->
    <xs:simpleType name="version">
        <xs:restriction base="xs:decimal">
            <xs:enumeration value="1.0"/>
        </xs:restriction>
    </xs:simpleType>
    <xs:simpleType name="halVersion">
        <xs:annotation>
            <xs:documentation xml:lang="en">
                Version of the interface the hal implements.
            </xs:documentation>
        </xs:annotation>
        <xs:restriction base="xs:decimal">
            <!-- List of HAL versions supported by the framework. -->
            <xs:enumeration value="2.0"/>
            <xs:enumeration value="3.0"/>
        </xs:restriction>
    </xs:simpleType>
    <xs:element name="audioPolicyConfiguration">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="globalConfiguration" type="globalConfiguration"/>
                <xs:element name="modules" type="modules" maxOccurs="unbounded"/>
                <xs:element name="volumes" type="volumes" maxOccurs="unbounded"/>
            </xs:sequence>
            <xs:attribute name="version" type="version"/>
        </xs:complexType>
        <xs:key name="moduleNameKey">
            <xs:selector xpath="modules/module"/>
            <xs:field xpath="@name"/>
        </xs:key>
        <xs:unique name="volumeTargetUniqueness">
            <xs:selector xpath="volumes/volume"/>
            <xs:field xpath="@stream"/>
            <xs:field xpath="@deviceCategory"/>
        </xs:unique>
        <xs:key name="volumeCurveNameKey">
            <xs:selector xpath="volumes/reference"/>
            <xs:field xpath="@name"/>
        </xs:key>
        <xs:keyref name="volumeCurveRef" refer="volumeCurveNameKey">
            <xs:selector xpath="volumes/volume"/>
            <xs:field xpath="@ref"/>
        </xs:keyref>
    </xs:element>
    <xs:complexType name="globalConfiguration">
        <xs:attribute name="speaker_drc_enabled" type="xs:boolean" use="required"/>
    </xs:complexType>
    <xs:complexType name="modules">
        <xs:annotation>
            <xs:documentation xml:lang="en">
                There should be one section per audio HW module present on the platform.
                Each <module/> contains two mandatory tags: “halVersion” and “name”.
                The module "name" is the same as in previous .conf file.
                Each module must contain the following sections:
                 - <devicePorts/>: a list of device descriptors for all
                   input and output devices accessible via this module.
                   This contains both permanently attached devices and removable devices.
                 - <mixPorts/>: listing all output and input streams exposed by the audio HAL
                 - <routes/>: list of possible connections between input
                   and output devices or between stream and devices.
                   A <route/> is defined by a set of 3 attributes:
                        -"type": mux|mix means all sources are mutual exclusive (mux) or can be mixed (mix)
                        -"sink": the sink involved in this route
                        -"sources": all the sources than can be connected to the sink via this route
                 - <attachedDevices/>: permanently attached devices.
                   The attachedDevices section is a list of devices names.
                   Their names correspond to device names defined in "devicePorts" section.
                 - <defaultOutputDevice/> is the device to be used when no policy rule applies
            </xs:documentation>
        </xs:annotation>
        <xs:sequence>
            <xs:element name="module" maxOccurs="unbounded">
                <xs:complexType>
                    <xs:sequence>
                        <xs:element name="attachedDevices" type="attachedDevices" minOccurs="0">
                            <xs:unique name="attachedDevicesUniqueness">
                                <xs:selector xpath="item"/>
                                <xs:field xpath="."/>
                            </xs:unique>
                        </xs:element>
                        <xs:element name="defaultOutputDevice" type="xs:token" minOccurs="0"/>
                        <xs:element name="mixPorts" type="mixPorts" minOccurs="0"/>
                        <xs:element name="devicePorts" type="devicePorts" minOccurs="0"/>
                        <xs:element name="routes" type="routes" minOccurs="0"/>
                    </xs:sequence>
                    <xs:attribute name="name" type="xs:string" use="required"/>
                    <xs:attribute name="halVersion" type="halVersion" use="required"/>
                </xs:complexType>
                <xs:unique name="mixPortNameUniqueness">
                    <xs:selector xpath="mixPorts/mixPort"/>
                    <xs:field xpath="@name"/>
                </xs:unique>
                <xs:key name="devicePortNameKey">
                    <xs:selector xpath="devicePorts/devicePort"/>
                    <xs:field xpath="@tagName"/>
                </xs:key>
                <xs:unique name="devicePortUniqueness">
                    <xs:selector xpath="devicePorts/devicePort"/>
                    <xs:field xpath="@type"/>
                    <xs:field xpath="@address"/>
                </xs:unique>
                <xs:keyref name="defaultOutputDeviceRef" refer="devicePortNameKey">
                    <xs:selector xpath="defaultOutputDevice"/>
                    <xs:field xpath="."/>
                </xs:keyref>
                <xs:keyref name="attachedDeviceRef" refer="devicePortNameKey">
                    <xs:selector xpath="attachedDevices/item"/>
                    <xs:field xpath="."/>
                </xs:keyref>
                <!-- The following 3 constraints try to make sure each sink port
                     is reference in one an only one route. -->
                <xs:key name="routeSinkKey">
                    <!-- predicate [@type='sink'] does not work in xsd 1.0 -->
                    <xs:selector xpath="devicePorts/devicePort|mixPorts/mixPort"/>
                    <xs:field xpath="@tagName|@name"/>
                </xs:key>
                <xs:keyref name="routeSinkRef" refer="routeSinkKey">
                    <xs:selector xpath="routes/route"/>
                    <xs:field xpath="@sink"/>
                </xs:keyref>
                <xs:unique name="routeUniqueness">
                    <xs:selector xpath="routes/route"/>
                    <xs:field xpath="@sink"/>
                </xs:unique>
            </xs:element>
        </xs:sequence>
    </xs:complexType>
    <xs:complexType name="attachedDevices">
        <xs:sequence>
            <xs:element name="item" type="xs:token" minOccurs="0" maxOccurs="unbounded"/>
        </xs:sequence>
    </xs:complexType>
    <!-- TODO: separate values by space for better xsd validations. -->
    <xs:simpleType name="audioInOutFlags">
        <xs:annotation>
            <xs:documentation xml:lang="en">
                "|" separated list of audio_output_flags_t or audio_input_flags_t.
            </xs:documentation>
        </xs:annotation>
        <xs:restriction base="xs:string">
            <xs:pattern value="|[_A-Z]+(\|[_A-Z]+)*"/>
        </xs:restriction>
    </xs:simpleType>
    <xs:simpleType name="role">
        <xs:restriction base="xs:string">
            <xs:enumeration value="sink"/>
            <xs:enumeration value="source"/>
        </xs:restriction>
    </xs:simpleType>
    <xs:complexType name="mixPorts">
        <xs:sequence>
            <xs:element name="mixPort" minOccurs="0" maxOccurs="unbounded">
                <xs:complexType>
                    <xs:sequence>
                        <xs:element name="profile" type="profile" minOccurs="0" maxOccurs="unbounded"/>
                        <xs:element name="gains" type="gains" minOccurs="0"/>
                    </xs:sequence>
                    <xs:attribute name="name" type="xs:token" use="required"/>
                    <xs:attribute name="role" type="role" use="required"/>
                    <xs:attribute name="flags" type="audioInOutFlags"/>
                    <xs:attribute name="maxOpenCount" type="xs:unsignedInt"/>
                    <xs:attribute name="maxActiveCount" type="xs:unsignedInt"/>
                    <xs:attribute name="preferredUsage" type="audioUsageList">
                        <xs:annotation>
                            <xs:documentation xml:lang="en">
                                When choosing the mixPort of an audio track, the audioPolicy
                                first considers the mixPorts with a preferredUsage including
                                the track AudioUsage preferred .
                                If non support the track format, the other mixPorts are considered.
                                Eg: a <mixPort preferredUsage="AUDIO_USAGE_MEDIA" /> will receive
                                    the audio of all apps playing with a MEDIA usage.
                                    It may receive audio from ALARM if there are no audio compatible
                                    <mixPort preferredUsage="AUDIO_USAGE_ALARM" />.
                             </xs:documentation>
                        </xs:annotation>
                    </xs:attribute>
                </xs:complexType>
                <xs:unique name="mixPortProfileUniqueness">
                    <xs:selector xpath="profile"/>
                    <xs:field xpath="format"/>
                    <xs:field xpath="samplingRate"/>
                    <xs:field xpath="channelMasks"/>
                </xs:unique>
                <xs:unique name="mixPortGainUniqueness">
                    <xs:selector xpath="gains/gain"/>
                    <xs:field xpath="@name"/>
                </xs:unique>
            </xs:element>
        </xs:sequence>
    </xs:complexType>
    <!-- Enum values of audio_device_t in audio.h
         TODO: generate from hidl to avoid manual sync.
         TODO: separate source and sink in the xml for better xsd validations. -->
    <xs:simpleType name="audioDevice">
        <xs:restriction base="xs:string">
            <xs:enumeration value="AUDIO_DEVICE_NONE"/>

            <xs:enumeration value="AUDIO_DEVICE_OUT_EARPIECE"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_SPEAKER"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_WIRED_HEADSET"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_WIRED_HEADPHONE"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_BLUETOOTH_SCO"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_BLUETOOTH_A2DP"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_AUX_DIGITAL"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_HDMI"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_USB_ACCESSORY"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_USB_DEVICE"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_REMOTE_SUBMIX"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_TELEPHONY_TX"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_LINE"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_HDMI_ARC"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_SPDIF"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_FM"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_AUX_LINE"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_SPEAKER_SAFE"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_IP"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_BUS"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_PROXY"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_USB_HEADSET"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_HEARING_AID"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_ECHO_CANCELLER"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_DEFAULT"/>
            <xs:enumeration value="AUDIO_DEVICE_OUT_STUB"/>

            <!-- Due to the xml format, IN types can not be a separated from OUT types -->
            <xs:enumeration value="AUDIO_DEVICE_IN_COMMUNICATION"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_AMBIENT"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_BUILTIN_MIC"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_WIRED_HEADSET"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_AUX_DIGITAL"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_HDMI"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_VOICE_CALL"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_TELEPHONY_RX"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_BACK_MIC"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_REMOTE_SUBMIX"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_USB_ACCESSORY"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_USB_DEVICE"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_FM_TUNER"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_TV_TUNER"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_LINE"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_SPDIF"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_BLUETOOTH_A2DP"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_LOOPBACK"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_IP"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_BUS"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_PROXY"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_USB_HEADSET"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_BLUETOOTH_BLE"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_DEFAULT"/>
            <xs:enumeration value="AUDIO_DEVICE_IN_STUB"/>
        </xs:restriction>
    </xs:simpleType>
    <!-- Enum values of audio_format_t in audio.h
         TODO: generate from hidl to avoid manual sync. -->
    <xs:simpleType name="audioFormat">
        <xs:restriction base="xs:string">
            <xs:enumeration value="AUDIO_FORMAT_PCM_16_BIT" />
            <xs:enumeration value="AUDIO_FORMAT_PCM_8_BIT"/>
            <xs:enumeration value="AUDIO_FORMAT_PCM_32_BIT"/>
            <xs:enumeration value="AUDIO_FORMAT_PCM_8_24_BIT"/>
            <xs:enumeration value="AUDIO_FORMAT_PCM_FLOAT"/>
            <xs:enumeration value="AUDIO_FORMAT_PCM_24_BIT_PACKED"/>
            <xs:enumeration value="AUDIO_FORMAT_MP3"/>
            <xs:enumeration value="AUDIO_FORMAT_AMR_NB"/>
            <xs:enumeration value="AUDIO_FORMAT_AMR_WB"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_MAIN"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_LC"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_SSR"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_LTP"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_HE_V1"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_SCALABLE"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_ERLC"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_LD"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_HE_V2"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_ELD"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_ADTS_MAIN"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_ADTS_LC"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_ADTS_SSR"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_ADTS_LTP"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_ADTS_HE_V1"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_ADTS_SCALABLE"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_ADTS_ERLC"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_ADTS_LD"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_ADTS_HE_V2"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_ADTS_ELD"/>
            <xs:enumeration value="AUDIO_FORMAT_VORBIS"/>
            <xs:enumeration value="AUDIO_FORMAT_HE_AAC_V1"/>
            <xs:enumeration value="AUDIO_FORMAT_HE_AAC_V2"/>
            <xs:enumeration value="AUDIO_FORMAT_OPUS"/>
            <xs:enumeration value="AUDIO_FORMAT_AC3"/>
            <xs:enumeration value="AUDIO_FORMAT_E_AC3"/>
            <xs:enumeration value="AUDIO_FORMAT_DTS"/>
            <xs:enumeration value="AUDIO_FORMAT_DTS_HD"/>
            <xs:enumeration value="AUDIO_FORMAT_IEC61937"/>
            <xs:enumeration value="AUDIO_FORMAT_DOLBY_TRUEHD"/>
            <xs:enumeration value="AUDIO_FORMAT_EVRC"/>
            <xs:enumeration value="AUDIO_FORMAT_EVRCB"/>
            <xs:enumeration value="AUDIO_FORMAT_EVRCWB"/>
            <xs:enumeration value="AUDIO_FORMAT_EVRCNW"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_ADIF"/>
            <xs:enumeration value="AUDIO_FORMAT_WMA"/>
            <xs:enumeration value="AUDIO_FORMAT_WMA_PRO"/>
            <xs:enumeration value="AUDIO_FORMAT_AMR_WB_PLUS"/>
            <xs:enumeration value="AUDIO_FORMAT_MP2"/>
            <xs:enumeration value="AUDIO_FORMAT_QCELP"/>
            <xs:enumeration value="AUDIO_FORMAT_DSD"/>
            <xs:enumeration value="AUDIO_FORMAT_FLAC"/>
            <xs:enumeration value="AUDIO_FORMAT_ALAC"/>
            <xs:enumeration value="AUDIO_FORMAT_APE"/>
            <xs:enumeration value="AUDIO_FORMAT_AAC_ADTS"/>
            <xs:enumeration value="AUDIO_FORMAT_SBC"/>
            <xs:enumeration value="AUDIO_FORMAT_APTX"/>
            <xs:enumeration value="AUDIO_FORMAT_APTX_HD"/>
            <xs:enumeration value="AUDIO_FORMAT_AC4"/>
            <xs:enumeration value="AUDIO_FORMAT_LDAC"/>
        </xs:restriction>
    </xs:simpleType>
    <!-- Enum values of audio::common::4_0::AudioUsage
         TODO: generate from HIDL to avoid manual sync. -->
    <xs:simpleType name="audioUsage">
        <xs:restriction base="xs:string">
            <xs:enumeration value="AUDIO_USAGE_UNKNOWN" />
            <xs:enumeration value="AUDIO_USAGE_MEDIA" />
            <xs:enumeration value="AUDIO_USAGE_VOICE_COMMUNICATION" />
            <xs:enumeration value="AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING" />
            <xs:enumeration value="AUDIO_USAGE_ALARM" />
            <xs:enumeration value="AUDIO_USAGE_NOTIFICATION" />
            <xs:enumeration value="AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE" />
            <xs:enumeration value="AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY" />
            <xs:enumeration value="AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE" />
            <xs:enumeration value="AUDIO_USAGE_ASSISTANCE_SONIFICATION" />
            <xs:enumeration value="AUDIO_USAGE_GAME" />
            <xs:enumeration value="AUDIO_USAGE_VIRTUAL_SOURCE" />
            <xs:enumeration value="AUDIO_USAGE_ASSISTANT" />
        </xs:restriction>
    </xs:simpleType>
    <xs:simpleType name="audioUsageList">
        <xs:list itemType="audioUsage"/>
    </xs:simpleType>
    <!-- TODO: Change to a space separated list to xsd enforce correctness. -->
    <xs:simpleType name="samplingRates">
        <xs:restriction base="xs:string">
            <xs:pattern value="[0-9]+(,[0-9]+)*"/>
        </xs:restriction>
    </xs:simpleType>
    <!-- TODO: Change to a space separated list to xsd enforce correctness. -->
    <xs:simpleType name="channelMask">
        <xs:annotation>
            <xs:documentation xml:lang="en">
                Comma (",") separated list of channel flags
                from audio_channel_mask_t.
            </xs:documentation>
        </xs:annotation>
        <xs:restriction base="xs:string">
            <xs:pattern value="[_A-Z][_A-Z0-9]*(,[_A-Z][_A-Z0-9]*)*"/>
        </xs:restriction>
    </xs:simpleType>
    <xs:complexType name="profile">
        <xs:attribute name="name" type="xs:token" use="optional"/>
        <xs:attribute name="format" type="audioFormat" use="optional"/>
        <xs:attribute name="samplingRates" type="samplingRates" use="optional"/>
        <xs:attribute name="channelMasks" type="channelMask" use="optional"/>
    </xs:complexType>
    <xs:simpleType name="gainMode">
        <xs:restriction base="xs:string">
            <xs:enumeration value="AUDIO_GAIN_MODE_JOINT"/>
            <xs:enumeration value="AUDIO_GAIN_MODE_CHANNELS"/>
            <xs:enumeration value="AUDIO_GAIN_MODE_RAMP"/>
        </xs:restriction>
    </xs:simpleType>
    <xs:complexType name="gains">
        <xs:sequence>
            <xs:element name="gain" minOccurs="0" maxOccurs="unbounded">
                <xs:complexType>
                    <xs:attribute name="name" type="xs:token" use="required"/>
                    <xs:attribute name="mode" type="gainMode" use="required"/>
                    <xs:attribute name="channel_mask" type="channelMask" use="optional"/>
                    <xs:attribute name="minValueMB" type="xs:int" use="optional"/>
                    <xs:attribute name="maxValueMB" type="xs:int" use="optional"/>
                    <xs:attribute name="defaultValueMB" type="xs:int" use="optional"/>
                    <xs:attribute name="stepValueMB" type="xs:int" use="optional"/>
                    <xs:attribute name="minRampMs" type="xs:int" use="optional"/>
                    <xs:attribute name="maxRampMs" type="xs:int" use="optional"/>
                </xs:complexType>
            </xs:element>
        </xs:sequence>
    </xs:complexType>
    <xs:complexType name="devicePorts">
        <xs:sequence>
            <xs:element name="devicePort" minOccurs="0" maxOccurs="unbounded">
                <xs:complexType>
                    <xs:sequence>
                        <xs:element name="profile" type="profile" minOccurs="0" maxOccurs="unbounded"/>
                        <xs:element name="gains" type="gains" minOccurs="0"/>
                    </xs:sequence>
                    <xs:attribute name="tagName" type="xs:token" use="required"/>
                    <xs:attribute name="type" type="audioDevice" use="required"/>
                    <xs:attribute name="role" type="role" use="required"/>
                    <xs:attribute name="address" type="xs:string" use="optional" default=""/>
                    <!-- Note that XSD 1.0 can not check that a type only has one default. -->
                    <xs:attribute name="default" type="xs:boolean" use="optional">
                        <xs:annotation>
                            <xs:documentation xml:lang="en">
                                The default device will be used if multiple have the same type
                                and no explicit route request exists for a specific device of
                                that type.
                            </xs:documentation>
                        </xs:annotation>
                    </xs:attribute>
                </xs:complexType>
                <xs:unique name="devicePortProfileUniqueness">
                    <xs:selector xpath="profile"/>
                    <xs:field xpath="format"/>
                    <xs:field xpath="samplingRate"/>
                    <xs:field xpath="channelMasks"/>
                </xs:unique>
                <xs:unique name="devicePortGainUniqueness">
                    <xs:selector xpath="gains/gain"/>
                    <xs:field xpath="@name"/>
                </xs:unique>
            </xs:element>
        </xs:sequence>
    </xs:complexType>
    <xs:simpleType name="mixType">
        <xs:restriction base="xs:string">
            <xs:enumeration value="mix"/>
            <xs:enumeration value="mux"/>
        </xs:restriction>
    </xs:simpleType>
    <xs:complexType name="routes">
        <xs:sequence>
            <xs:element name="route" minOccurs="0" maxOccurs="unbounded">
                <xs:annotation>
                    <xs:documentation xml:lang="en">
                        List all available sources for a given sink.
                    </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                    <xs:attribute name="type" type="mixType" use="required"/>
                    <xs:attribute name="sink" type="xs:string" use="required"/>
                    <xs:attribute name="sources" type="xs:string" use="required"/>
                </xs:complexType>
            </xs:element>
        </xs:sequence>
    </xs:complexType>
    <xs:complexType name="volumes">
        <xs:sequence>
            <xs:element name="volume" type="volume" minOccurs="0" maxOccurs="unbounded"/>
            <xs:element name="reference" type="reference" minOccurs="0" maxOccurs="unbounded">
            </xs:element>
        </xs:sequence>
    </xs:complexType>
    <!-- TODO: Always require a ref for better xsd validations.
               Currently a volume could have no points nor ref
               as it can not be forbidden by xsd 1.0.-->
    <xs:simpleType name="volumePoint">
        <xs:annotation>
            <xs:documentation xml:lang="en">
                Comma separated pair of number.
                The fist one is the framework level (between 0 and 100).
                The second one is the volume to send to the HAL.
                The framework will interpolate volumes not specified.
                Their MUST be at least 2 points specified.
            </xs:documentation>
        </xs:annotation>
        <xs:restriction base="xs:string">
            <xs:pattern value="([0-9]{1,2}|100),-?[0-9]+"/>
        </xs:restriction>
    </xs:simpleType>
    <!-- Enum values of audio_stream_type_t in audio-base.h
         TODO: generate from hidl to avoid manual sync. -->
    <xs:simpleType name="stream">
        <xs:restriction base="xs:string">
            <xs:enumeration value="AUDIO_STREAM_VOICE_CALL"/>
            <xs:enumeration value="AUDIO_STREAM_SYSTEM"/>
            <xs:enumeration value="AUDIO_STREAM_RING"/>
            <xs:enumeration value="AUDIO_STREAM_MUSIC"/>
            <xs:enumeration value="AUDIO_STREAM_ALARM"/>
            <xs:enumeration value="AUDIO_STREAM_NOTIFICATION"/>
            <xs:enumeration value="AUDIO_STREAM_BLUETOOTH_SCO"/>
            <xs:enumeration value="AUDIO_STREAM_ENFORCED_AUDIBLE"/>
            <xs:enumeration value="AUDIO_STREAM_DTMF"/>
            <xs:enumeration value="AUDIO_STREAM_TTS"/>
            <xs:enumeration value="AUDIO_STREAM_ACCESSIBILITY"/>
            <xs:enumeration value="AUDIO_STREAM_REROUTING"/>
            <xs:enumeration value="AUDIO_STREAM_PATCH"/>
        </xs:restriction>
    </xs:simpleType>
    <!-- Enum values of device_category from Volume.h.
         TODO: generate from hidl to avoid manual sync. -->
    <xs:simpleType name="deviceCategory">
        <xs:restriction base="xs:string">
            <xs:enumeration value="DEVICE_CATEGORY_HEADSET"/>
            <xs:enumeration value="DEVICE_CATEGORY_SPEAKER"/>
            <xs:enumeration value="DEVICE_CATEGORY_EARPIECE"/>
            <xs:enumeration value="DEVICE_CATEGORY_EXT_MEDIA"/>
            <xs:enumeration value="DEVICE_CATEGORY_HEARING_AID"/>
        </xs:restriction>
    </xs:simpleType>
    <xs:complexType name="volume">
        <xs:annotation>
            <xs:documentation xml:lang="en">
                Volume section defines a volume curve for a given use case and device category.
                It contains a list of points of this curve expressing the attenuation in Millibels
                for a given volume index from 0 to 100.
                <volume stream="AUDIO_STREAM_MUSIC" deviceCategory="DEVICE_CATEGORY_SPEAKER">
                    <point>0,-9600</point>
                    <point>100,0</point>
                </volume>

                It may also reference a reference/@name to avoid duplicating curves.
                <volume stream="AUDIO_STREAM_MUSIC" deviceCategory="DEVICE_CATEGORY_SPEAKER"
                        ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
                <reference name="DEFAULT_MEDIA_VOLUME_CURVE">
                    <point>0,-9600</point>
                    <point>100,0</point>
                </reference>
            </xs:documentation>
        </xs:annotation>
        <xs:sequence>
            <xs:element name="point" type="volumePoint" minOccurs="0" maxOccurs="unbounded"/>
        </xs:sequence>
        <xs:attribute name="stream" type="stream"/>
        <xs:attribute name="deviceCategory" type="deviceCategory"/>
        <xs:attribute name="ref" type="xs:token" use="optional"/>
    </xs:complexType>
    <xs:complexType name="reference">
        <xs:sequence>
            <xs:element name="point" type="volumePoint" minOccurs="2" maxOccurs="unbounded"/>
        </xs:sequence>
        <xs:attribute name="name" type="xs:token" use="required"/>
    </xs:complexType>
</xs:schema>