1# @ohos.bluetooth.a2dp (Bluetooth A2DP Module) 2 3The **a2dp** module provides APIs for using the Bluetooth Advanced Audio Distribution Profile (A2DP), which defines how to stream high quality audio from one device to another over a Bluetooth connection. 4 5> **NOTE** 6> 7> The initial APIs of this module are supported since API version 10. Newly added APIs will be marked with a superscript to indicate their earliest API version. 8 9 10 11## Modules to Import 12 13```js 14import a2dp from '@ohos.bluetooth.a2dp'; 15``` 16 17## a2dp.createA2dpSrcProfile 18 19createA2dpSrcProfile(): A2dpSourceProfile 20 21Creates an **A2dpSrcProfile** instance. 22 23**System capability**: SystemCapability.Communication.Bluetooth.Core 24 25**Return value** 26 27| Type | Description | 28| ----------------------------- | ---------- | 29| A2dpSourceProfile | **A2dpSrcProfile** instance created.| 30 31**Example** 32 33```js 34import { BusinessError } from '@ohos.base'; 35try { 36 let a2dpProfile = a2dp.createA2dpSrcProfile(); 37 console.info('a2dp success'); 38} catch (err) { 39 console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 40} 41``` 42 43 44## A2dpSourceProfile 45 46Provides APIs for using the A2DP. Before using any API of **A2dpSourceProfile**, you need to create an instance of this class by using **createA2dpSrcProfile()**. 47 48 49### connect 50 51connect(deviceId: string): void 52 53Connects to an A2DP device. 54 55**System API**: This is a system API. 56 57**Required permissions**: ohos.permission.ACCESS_BLUETOOTH 58 59**System capability**: SystemCapability.Communication.Bluetooth.Core 60 61**Parameters** 62 63| Name | Type | Mandatory | Description | 64| ------ | ------ | ---- | ------- | 65| deviceId | string | Yes | Address of the device to connect. | 66 67**Error codes** 68 69For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md). 70 71| ID| Error Message| 72| -------- | ---------------------------- | 73|2900001 | Service stopped. | 74|2900003 | Bluetooth switch is off. | 75|2900004 | Profile is not supported. | 76|2900099 | Operation failed. | 77 78**Example** 79 80```js 81import { BusinessError } from '@ohos.base'; 82try { 83 let a2dpSrc = a2dp.createA2dpSrcProfile(); 84 a2dpSrc.connect('XX:XX:XX:XX:XX:XX'); 85} catch (err) { 86 console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 87} 88``` 89 90 91### disconnect 92 93disconnect(deviceId: string): void 94 95Disconnects from an A2DP device. 96 97**System API**: This is a system API. 98 99**Required permissions**: ohos.permission.ACCESS_BLUETOOTH 100 101**System capability**: SystemCapability.Communication.Bluetooth.Core 102 103**Parameters** 104 105| Name | Type | Mandatory | Description | 106| ------ | ------ | ---- | ------- | 107| deviceId | string | Yes | Address of the device to disconnect. | 108 109**Error codes** 110 111For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md). 112 113| ID| Error Message| 114| -------- | ---------------------------- | 115|2900001 | Service stopped. | 116|2900003 | Bluetooth switch is off. | 117|2900004 | Profile is not supported. | 118|2900099 | Operation failed. | 119 120**Example** 121 122```js 123import { BusinessError } from '@ohos.base'; 124try { 125 let a2dpSrc = a2dp.createA2dpSrcProfile(); 126 a2dpSrc.disconnect('XX:XX:XX:XX:XX:XX'); 127} catch (err) { 128 console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 129} 130``` 131 132 133### getPlayingState 134 135getPlayingState(deviceId: string): PlayingState 136 137Obtains the playing state of a device. 138 139**Required permissions**: ohos.permission.ACCESS_BLUETOOTH 140 141**System capability**: SystemCapability.Communication.Bluetooth.Core 142 143**Parameters** 144 145| Name | Type | Mandatory | Description | 146| ------ | ------ | ---- | ------- | 147| device | string | Yes | Address of the target device. | 148 149**Return value** 150 151| Type | Description | 152| ----------------------------- | ---------- | 153| [PlayingState](#playingstate) | Playing state of the remote device obtained.| 154 155**Error codes** 156 157For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md). 158 159| ID| Error Message| 160| -------- | ---------------------------- | 161|2900001 | Service stopped. | 162|2900003 | Bluetooth switch is off. | 163|2900004 | Profile is not supported. | 164|2900099 | Operation failed. | 165 166**Example** 167 168```js 169import { BusinessError } from '@ohos.base'; 170try { 171 let a2dpSrc = a2dp.createA2dpSrcProfile(); 172 let state = a2dpSrc.getPlayingState('XX:XX:XX:XX:XX:XX'); 173} catch (err) { 174 console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 175} 176``` 177 178### isAbsoluteVolumeSupported<sup>11+</sup> 179 180isAbsoluteVolumeSupported(deviceId: string, callback: AsyncCallback<boolean>): void 181 182Checks whether a device supports the absolute volume capability. This API uses an asynchronous callback to return the result. 183 184**System API**: This is a system API. 185 186**Required permissions**: ohos.permission.ACCESS_BLUETOOTH 187 188**System capability**: SystemCapability.Communication.Bluetooth.Core 189 190**Parameters** 191 192| Name | Type | Mandatory | Description | 193| ------ | ------ | ---- | ------- | 194| deviceId | string | Yes | Address of the device to check. | 195| callback | AsyncCallback<boolean> | Yes| Callback invoked to return the result. If the device supports absolute volume, **supported** is returned.| 196 197 198**Error codes** 199 200For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md). 201 202| ID| Error Message| 203| -------- | ---------------------------- | 204|2900001 | Service stopped. | 205|2900003 | Bluetooth switch is off. | 206|2900099 | Operation failed. | 207 208**Example** 209 210```js 211import { BusinessError } from '@ohos.base'; 212try { 213 let a2dpSrc = a2dp.createA2dpSrcProfile(); 214 a2dpSrc.isAbsoluteVolumeSupported('XX:XX:XX:XX:XX:XX', (err, supported) => { 215 console.info('device support absolute volume ' + supported); 216 }); 217} catch (err) { 218 console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 219} 220``` 221 222### isAbsoluteVolumeSupported<sup>11+</sup> 223 224isAbsoluteVolumeSupported(deviceId: string): Promise<boolean> 225 226Checks whether a device supports the absolute volume capability. This API uses a promise to return the result. 227 228**System API**: This is a system API. 229 230**Required permissions**: ohos.permission.ACCESS_BLUETOOTH 231 232**System capability**: SystemCapability.Communication.Bluetooth.Core 233 234**Parameters** 235 236| Name | Type | Mandatory | Description | 237| ------ | ------ | ---- | ------- | 238| deviceId | string | Yes | Address of the device to check. | 239 240**Return value** 241 242| Type | Description | 243| ----------------------------- | ---------- | 244| Promise<boolean> | Promise used to return the result. If the device supports absolute volume, **supported** is returned.| 245 246**Error codes** 247 248For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md). 249 250| ID| Error Message| 251| -------- | ---------------------------- | 252|2900001 | Service stopped. | 253|2900003 | Bluetooth switch is off. | 254|2900099 | Operation failed. | 255 256**Example** 257 258```js 259import { BusinessError } from '@ohos.base'; 260try { 261 let a2dpSrc = a2dp.createA2dpSrcProfile(); 262 a2dpSrc.isAbsoluteVolumeSupported('XX:XX:XX:XX:XX:XX').then((supported) => { 263 console.info('device support absolute volume ' + supported); 264 }); 265} catch (err) { 266 console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 267} 268``` 269 270### isAbsoluteVolumeEnabled<sup>11+</sup> 271 272isAbsoluteVolumeEnabled(deviceId: string, callback: AsyncCallback<boolean>): void 273 274Checks whether the absolute volume capability is enabled for a device. This API uses an asynchronous callback to return the result. Before using this API, use [isAbsoluteVolumeSupported](#isabsolutevolumesupported11) to check whether the device supports the absolute volume capability. 275 276**System API**: This is a system API. 277 278**Required permissions**: ohos.permission.ACCESS_BLUETOOTH 279 280**System capability**: SystemCapability.Communication.Bluetooth.Core 281 282**Parameters** 283 284| Name | Type | Mandatory | Description | 285| ------ | ------ | ---- | ------- | 286| deviceId | string | Yes | Address of the device to check. | 287| callback | AsyncCallback<boolean> | Yes| Callback invoked to return the result. If absolute volume is enabled, **enabled** is returned.| 288 289 290**Error codes** 291 292For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md). 293 294| ID| Error Message| 295| -------- | ---------------------------- | 296|2900001 | Service stopped. | 297|2900003 | Bluetooth switch is off. | 298|2900099 | Operation failed. | 299 300**Example** 301 302```js 303import { BusinessError } from '@ohos.base'; 304try { 305 let a2dpSrc = a2dp.createA2dpSrcProfile(); 306 a2dpSrc.isAbsoluteVolumeEnabled('XX:XX:XX:XX:XX:XX', (err, enabled) => { 307 console.info('device absolute volume enable ' + enabled); 308 }); 309} catch (err) { 310 console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 311} 312``` 313 314### isAbsoluteVolumeEnabled<sup>11+</sup> 315 316isAbsoluteVolumeEnabled(deviceId: string): Promise<boolean> 317 318Checks whether the absolute volume capability is enabled for a device. This API uses a promise to return the result. Before using this API, use [isAbsoluteVolumeSupported](#isabsolutevolumesupported11) to check whether the device supports the absolute volume capability. 319 320**System API**: This is a system API. 321 322**Required permissions**: ohos.permission.ACCESS_BLUETOOTH 323 324**System capability**: SystemCapability.Communication.Bluetooth.Core 325 326**Parameters** 327 328| Name | Type | Mandatory | Description | 329| ------ | ------ | ---- | ------- | 330| deviceId | string | Yes | Address of the device to check. | 331 332**Return value** 333 334| Type | Description | 335| ----------------------------- | ---------- | 336| Promise<boolean> | Promise used to return the result. If absolute volume is enabled, **enabled** is returned.| 337 338**Error codes** 339 340For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md). 341 342| ID| Error Message| 343| -------- | ---------------------------- | 344|2900001 | Service stopped. | 345|2900003 | Bluetooth switch is off. | 346|2900099 | Operation failed. | 347 348**Example** 349 350```js 351import { BusinessError } from '@ohos.base'; 352try { 353 let a2dpSrc = a2dp.createA2dpSrcProfile(); 354 a2dpSrc.isAbsoluteVolumeEnabled('XX:XX:XX:XX:XX:XX').then((enabled) => { 355 console.info('device absolute volume enable ' + enabled); 356 }); 357} catch (err) { 358 console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 359} 360``` 361 362### enableAbsoluteVolume<sup>11+</sup> 363 364enableAbsoluteVolume(deviceId: string, callback: AsyncCallback<void>): void 365 366Enables the absolute volume capability for a device. This API uses an asynchronous callback to return the result. Before using this API, use [isAbsoluteVolumeSupported](#isabsolutevolumesupported11) to check whether the device supports the absolute volume capability. 367 368**System API**: This is a system API. 369 370**Required permissions**: ohos.permission.ACCESS_BLUETOOTH and ohos.permission.MANAGE_BLUETOOTH 371 372**System capability**: SystemCapability.Communication.Bluetooth.Core 373 374**Parameters** 375 376| Name | Type | Mandatory | Description | 377| ------ | ------ | ---- | ------- | 378| deviceId | string | Yes | Address of the target device. | 379| callback | AsyncCallback<void> | Yes| Callback invoked to return the result. If the operation is successful, **err** is **undefined**. Otherwise, **err** is an error object.| 380 381 382**Error codes** 383 384For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md). 385 386| ID| Error Message| 387| -------- | ---------------------------- | 388|2900001 | Service stopped. | 389|2900003 | Bluetooth switch is off. | 390|2900099 | Operation failed. | 391 392**Example** 393 394```js 395import { BusinessError } from '@ohos.base'; 396try { 397 let a2dpSrc = a2dp.createA2dpSrcProfile(); 398 a2dpSrc.enableAbsoluteVolume('XX:XX:XX:XX:XX:XX', (err) => { 399 if (err) { 400 console.error("enableAbsoluteVolume error"); 401 } 402 }); 403} catch (err) { 404 console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 405} 406``` 407 408### enableAbsoluteVolume<sup>11+</sup> 409 410enableAbsoluteVolume(deviceId: string): Promise<void> 411 412Enables the absolute volume capability for a device. This API uses a promise to return the result. Before using this API, use [isAbsoluteVolumeSupported](#isabsolutevolumesupported11) to check whether the device supports the absolute volume capability. 413 414**System API**: This is a system API. 415 416**Required permissions**: ohos.permission.ACCESS_BLUETOOTH and ohos.permission.MANAGE_BLUETOOTH 417 418**System capability**: SystemCapability.Communication.Bluetooth.Core 419 420**Parameters** 421 422| Name | Type | Mandatory | Description | 423| ------ | ------ | ---- | ------- | 424| deviceId | string | Yes | Address of the target device. | 425 426**Return value** 427 428| Type | Description | 429| ----------------------------- | ---------- | 430| Promise<void> | Promise used to return the result. If the operation is successful, **err** is **undefined**. Otherwise, **err** is an error object.| 431 432**Error codes** 433 434For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md). 435 436| ID| Error Message| 437| -------- | ---------------------------- | 438|2900001 | Service stopped. | 439|2900003 | Bluetooth switch is off. | 440|2900099 | Operation failed. | 441 442**Example** 443 444```js 445import { BusinessError } from '@ohos.base'; 446try { 447 let a2dpSrc = a2dp.createA2dpSrcProfile(); 448 a2dpSrc.enableAbsoluteVolume('XX:XX:XX:XX:XX:XX').then(() => { 449 console.info("enableAbsoluteVolume"); 450 } 451 ); 452} catch (err) { 453 console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 454} 455``` 456 457### disableAbsoluteVolume<sup>11+</sup> 458 459disableAbsoluteVolume(deviceId: string, callback: AsyncCallback<void>): void 460 461Disables the absolute volume capability for a device. This API uses an asynchronous callback to return the result. Before using this API, use [isAbsoluteVolumeSupported](#isabsolutevolumesupported11) to check whether the device supports the absolute volume capability. 462 463**System API**: This is a system API. 464 465**Required permissions**: ohos.permission.ACCESS_BLUETOOTH and ohos.permission.MANAGE_BLUETOOTH 466 467**System capability**: SystemCapability.Communication.Bluetooth.Core 468 469**Parameters** 470 471| Name | Type | Mandatory | Description | 472| ------ | ------ | ---- | ------- | 473| deviceId | string | Yes | Address of the target device. | 474| callback | AsyncCallback<void> | Yes| Callback invoked to return the result. If the operation is successful, **err** is **undefined**. Otherwise, **err** is an error object.| 475 476 477**Error codes** 478 479For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md). 480 481| ID| Error Message| 482| -------- | ---------------------------- | 483|2900001 | Service stopped. | 484|2900003 | Bluetooth switch is off. | 485|2900099 | Operation failed. | 486 487**Example** 488 489```js 490import { BusinessError } from '@ohos.base'; 491try { 492 let a2dpSrc = a2dp.createA2dpSrcProfile(); 493 a2dpSrc.disableAbsoluteVolume('XX:XX:XX:XX:XX:XX', (err) => { 494 if (err) { 495 console.error("disableAbsoluteVolume error"); 496 } 497 }); 498} catch (err) { 499 console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 500} 501``` 502 503### disableAbsoluteVolume<sup>11+</sup> 504 505disableAbsoluteVolume(deviceId: string): Promise<void> 506 507Disables the absolute volume capability for a device. This API uses a promise to return the result. Before using this API, use [isAbsoluteVolumeSupported](#isabsolutevolumesupported11) to check whether the device supports the absolute volume capability. 508 509**System API**: This is a system API. 510 511**Required permissions**: ohos.permission.ACCESS_BLUETOOTH and ohos.permission.MANAGE_BLUETOOTH 512 513**System capability**: SystemCapability.Communication.Bluetooth.Core 514 515**Parameters** 516 517| Name | Type | Mandatory | Description | 518| ------ | ------ | ---- | ------- | 519| deviceId | string | Yes | Address of the target device. | 520 521**Return value** 522 523| Type | Description | 524| ----------------------------- | ---------- | 525| Promise<void> | Promise used to return the result. If the operation is successful, **err** is **undefined**. Otherwise, **err** is an error object.| 526 527**Error codes** 528 529For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md). 530 531| ID| Error Message| 532| -------- | ---------------------------- | 533|2900001 | Service stopped. | 534|2900003 | Bluetooth switch is off. | 535|2900099 | Operation failed. | 536 537**Example** 538 539```js 540import { BusinessError } from '@ohos.base'; 541try { 542 let a2dpSrc = a2dp.createA2dpSrcProfile(); 543 a2dpSrc.disableAbsoluteVolume('XX:XX:XX:XX:XX:XX').then(() => { 544 console.info("disableAbsoluteVolume"); 545 }); 546} catch (err) { 547 console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 548} 549``` 550 551### getCurrentCodecInfo<sup>11+</sup> 552 553getCurrentCodecInfo(deviceId: string): CodecInfo 554 555Obtains the current codec information. 556 557**System API**: This is a system API. 558 559**Required permissions**: ohos.permission.ACCESS_BLUETOOTH 560 561**System capability**: SystemCapability.Communication.Bluetooth.Core 562 563**Parameters** 564 565| Name | Type | Mandatory | Description | 566| ------ | ------ | ---- | ------- | 567| deviceId | string | Yes | Address of the remote device.| 568 569**Return value** 570 571| Type | Description | 572| ----------------------------- | ---------- | 573| [CodecInfo](#codecinfo11)| Codec information obtained.| 574 575**Error codes** 576 577For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md). 578 579| ID| Error Message| 580| -------- | ---------------------------- | 581|2900001 | Service stopped. | 582|2900003 | Bluetooth switch is off. | 583|2900099 | Operation failed. | 584 585**Example** 586 587```js 588import { BusinessError } from '@ohos.base'; 589try { 590 let a2dpSrc = a2dp.createA2dpSrcProfile(); 591 let codecInfo : a2dp.CodecInfo = a2dpSrc.getCurrentCodecInfo('XX:XX:XX:XX:XX:XX'); 592} catch (err) { 593 console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 594} 595``` 596 597### setCurrentCodecInfo<sup>11+</sup> 598 599setCurrentCodecInfo(deviceId: string, codecInfo: CodecInfo): void 600 601Sets the current codec information. 602 603**System API**: This is a system API. 604 605**Required permissions**: ohos.permission.ACCESS_BLUETOOTH and ohos.permission.MANAGE_BLUETOOTH 606 607**System capability**: SystemCapability.Communication.Bluetooth.Core 608 609**Parameters** 610 611| Name | Type | Mandatory | Description | 612| ------ | ------ | ---- | ------- | 613| deviceId | string | Yes | Address of the remote device.| 614| codecInfo | [CodecInfo](#codecinfo11) | Yes | Codec information to set.| 615 616**Error codes** 617 618For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md). 619 620| ID| Error Message| 621| -------- | ---------------------------- | 622|2900001 | Service stopped. | 623|2900003 | Bluetooth switch is off. | 624|2900099 | Operation failed. | 625 626**Example** 627 628```js 629import { BusinessError } from '@ohos.base'; 630try { 631 let a2dpSrc = a2dp.createA2dpSrcProfile(); 632 let codecInfo : a2dp.CodecInfo = { 633 codecType: 0, 634 codecBitsPerSample: 1, 635 codecChannelMode: 2, 636 codecSampleRate: 1, 637 } 638 a2dpSrc.setCurrentCodecInfo('XX:XX:XX:XX:XX:XX', codecInfo); 639} catch (err) { 640 console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 641} 642``` 643 644## PlayingState 645 646Enumerates the A2DP playing states. 647 648**System capability**: SystemCapability.Communication.Bluetooth.Core 649 650| Name | Value | Description | 651| ----------------- | ------ | ------- | 652| STATE_NOT_PLAYING | 0x0000 | Not playing. | 653| STATE_PLAYING | 0x0001 | Playing.| 654 655 656## CodecInfo<sup>11+</sup> 657 658Defines the codec information. 659 660**System capability**: SystemCapability.Communication.Bluetooth.Core 661 662| Name | Type | Readable | Writable | Description | 663| ------------------- | ----------------------- | ---- | ---- | -------------------------------------- | 664| codecType<sup>11+</sup> | [CodecType](#codectype11) | Yes | Yes | Codec type. The default value is **CODEC_TYPE_SBC**.| 665| codecBitsPerSample<sup>11+</sup> | [CodecBitsPerSample](#codecbitspersample11) | Yes | Yes | Number of bits of each sample. The default value is **SCAN_MODE_LOW_POWER**.| 666| codecChannelMode<sup>11+</sup> | [CodecChannelMode](#codecchannelmode11) | Yes | Yes | Channel mode of the codec. The default value is **CODEC_CHANNEL_MODE_NONE**.| 667| codecSampleRate<sup>11+</sup> | [CodecSampleRate](#codecsamplerate11) | Yes | Yes | Sampling rate of the codec. The default value is **CODEC_BITS_PER_SAMPLE_NONE**.| 668 669 670## CodecType<sup>11+</sup> 671 672Enumerates the Bluetooth codec types. 673 674**System capability**: SystemCapability.Communication.Bluetooth.Core 675 676| Name | Value | Description | 677| ----------------- | ------ | ------- | 678| CODEC_TYPE_INVALID<sup>11+</sup> | -1 | Unknown type. | 679| CODEC_TYPE_SBC<sup>11+</sup> | 0 | SBC.| 680| CODEC_TYPE_AAC<sup>11+</sup> | 1 | AAC.| 681| CODEC_TYPE_L2HC<sup>11+</sup> | 2 | L2HC.| 682 683 684## CodecChannelMode<sup>11+</sup> 685 686Enumerates the channel modes of the Bluetooth codec. 687 688**System capability**: SystemCapability.Communication.Bluetooth.Core 689 690| Name | Value | Description | 691| ----------------- | ------ | ------- | 692| CODEC_CHANNEL_MODE_NONE<sup>11+</sup> | 0 | Unknown.| 693| CODEC_CHANNEL_MODE_MONO<sup>11+</sup> | 1 | Mono. | 694| CODEC_CHANNEL_MODE_STEREO<sup>11+</sup> | 2 | Stereo. | 695 696 697## CodecBitsPerSample<sup>11+</sup> 698 699Enumerates the number of bits per sample for the Bluetooth codec. 700 701**System capability**: SystemCapability.Communication.Bluetooth.Core 702 703| Name | Value | Description | 704| ----------------- | ------ | ------- | 705| CODEC_BITS_PER_SAMPLE_NONE<sup>11+</sup> | 0 | Unknown.| 706| CODEC_BITS_PER_SAMPLE_16<sup>11+</sup> | 1 | 16 bits per sample.| 707| CODEC_BITS_PER_SAMPLE_24<sup>11+</sup> | 2 | 24 bits per sample.| 708| CODEC_BITS_PER_SAMPLE_32<sup>11+</sup> | 3 | 32 bits per sample.| 709 710 711## CodecSampleRate<sup>11+</sup> 712 713Enumerates the sampling rates of the Bluetooth codec. 714 715**System capability**: SystemCapability.Communication.Bluetooth.Core 716 717| Name | Value | Description | 718| ----------------- | ------ | ------- | 719| CODEC_SAMPLE_RATE_NONE<sup>11+</sup> | 0 | Unknown.| 720| CODEC_SAMPLE_RATE_44100<sup>11+</sup> | 1 | 44.1 kHz.| 721| CODEC_SAMPLE_RATE_48000<sup>11+</sup> | 2 | 48 kHz.| 722| CODEC_SAMPLE_RATE_88200<sup>11+</sup> | 3 | 88.2 kHz.| 723| CODEC_SAMPLE_RATE_96000<sup>11+</sup> | 4 | 96 kHz.| 724| CODEC_SAMPLE_RATE_176400<sup>11+</sup> | 5 | 176.4 kHz.| 725| CODEC_SAMPLE_RATE_192000<sup>11+</sup> | 6 | 192 kHz.| 726