例程esp-adf\examples\player\pipeline_a2dp_sink_stream，iPhone手机（iOS），a2dp降低音量异常 (AUD-5933)

[ShaoMingya]

环境
音频开发套件：ESP32-LyraT-Mini V1.2
音频套件版本 V1.2
[必填]使用的模块或芯片：ESP32-WROOM-B
[必填]IDF 版本 master下的idf(esp-idf @ c8fc5f6)
[必填]ADF 版本 master(8a3b56a)
构建系统：[vscode]
编译器版本（在项目文件夹中运行以查找它）：GNU 13.2.0
操作系统：Linux（WSL）
使用 IDE？： vscode+esp扩展
电源：【USB]

--
问题描述
1、苹果手机蓝牙连接开发板；
2、音量先调到最大。
3、使用开发板的Vol-
按键以降低音量，结果按两下之后，手机音量调节图标没有很线性的降低，而是大幅降到很低的位置，然后又显示到最大音量，实际听到的音量没感到太大变化。
4、查看log，发现vol-按两次后，出线了Volume is set by remote controller 113%，但我并没有操作手机。

其他一些测试情况：
vol+等其他按键功能都正常；
使用了2个不同的苹果手机（iPhone11 ios17.7, iPhone Xs Max ios16.6.1）测试，都是一样的现象；
使用24年8月的的adf，也会出现这个现象；
使用了其他蓝牙耳机测试，苹果手机没有出现这个现象；
自己的设计的PCB板使用的a2dp也有这个现象（实际自己的板子出现问题后，才想到用官方开发板和官方例程验证）；
安卓手机（只测试了自己的一个）没有出现这个现象。

`ets Jun 8 2016 00:22:57

rst:0x1 (POWERON_RESET),boot:0x1b (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:7176
load:0x40078000,len:15564
ho 0 tail 12 room 4
load:0x40080400,len:4
0x40080400: _init at ??:?

load:0x40080404,len:3904
entry 0x40080640
I (31) boot: ESP-IDF v5.3.1 2nd stage bootloader
I (31) boot: compile time Dec 21 2024 14:59:57
I (31) boot: Multicore bootloader
I (36) boot: chip revision: v1.0
I (39) boot.esp32: SPI Speed : 40MHz
I (44) boot.esp32: SPI Mode : DIO
I (49) boot.esp32: SPI Flash Size : 4MB
I (53) boot: Enabling RNG early entropy source...
I (58) boot: Partition Table:
I (62) boot: ## Label Usage Type ST Offset Length
I (69) boot: 0 nvs WiFi data 01 02 00009000 00006000
I (77) boot: 1 phy_init RF data 01 01 0000f000 00001000
I (84) boot: 2 factory factory app 00 00 00010000 00300000
I (92) boot: End of partition table
I (96) esp_image: segment 0: paddr=00010020 vaddr=3f400020 size=32a54h (207444) map
I (176) esp_image: segment 1: paddr=00042a7c vaddr=3ffbdb60 size=04c78h ( 19576) load
I (183) esp_image: segment 2: paddr=000476fc vaddr=40080000 size=0891ch ( 35100) load
I (197) esp_image: segment 3: paddr=00050020 vaddr=400d0020 size=b6cd8h (748760) map
I (454) esp_image: segment 4: paddr=00106d00 vaddr=4008891c size=0f440h ( 62528) load
I (491) boot: Loaded app from partition at offset 0x10000
I (491) boot: Disabling RNG early entropy source...
I (503) cpu_start: Multicore app
I (511) cpu_start: Pro cpu start user code
I (511) cpu_start: cpu freq: 160000000 Hz
I (511) app_init: Application information:
I (514) app_init: Project name: bt_sink_demo
I (519) app_init: App version: 1
I (524) app_init: Compile time: Dec 21 2024 14:59:22
I (530) app_init: ELF file SHA256: e2024e075...
I (535) app_init: ESP-IDF: v5.3.1
I (540) efuse_init: Min chip rev: v0.0
I (545) efuse_init: Max chip rev: v3.99
I (550) efuse_init: Chip rev: v1.0
I (555) heap_init: Initializing. RAM available for dynamic allocation:
I (562) heap_init: At 3FFAFF10 len 000000F0 (0 KiB): DRAM
I (568) heap_init: At 3FFB6388 len 00001C78 (7 KiB): DRAM
I (574) heap_init: At 3FFB9A20 len 00004108 (16 KiB): DRAM
I (580) heap_init: At 3FFCC568 len 00013A98 (78 KiB): DRAM
I (586) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM
I (592) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
I (599) heap_init: At 40097D5C len 000082A4 (32 KiB): IRAM
I (607) spi_flash: detected chip: gd
I (609) spi_flash: flash io: dio
W (613) spi_flash: Detected size(8192k) larger than the size in the binary image header(4096k). Using the size in the binary image header.
W (626) ADC: legacy driver is deprecated, please migrate to esp_adc/adc_oneshot.h
I (635) coexist: coex firmware version: 4482466
I (641) main_task: Started on CPU0
I (651) main_task: Calling app_main()
I (661) BLUETOOTH_EXAMPLE: [ 1 ] Init Bluetooth
I (661) BTDM_INIT: BT controller compile version [b022216]
I (671) BTDM_INIT: Bluetooth MAC: ac:67:b2:cc:a3:fa
I (671) phy_init: phy_version 4830,54550f7,Jun 20 2024,14:22:08
I (1331) BLUETOOTH_EXAMPLE: [ 2 ] Start codec chip
W (1341) i2c_bus_v2: I2C master handle is NULL, will create new one
I (1341) gpio: GPIO[18]| InputEn: 1| OutputEn: 1| OpenDrain: 1| Pullup: 1| Pulldown: 0| Intr:0
I (1351) gpio: GPIO[23]| InputEn: 1| OutputEn: 1| OpenDrain: 1| Pullup: 1| Pulldown: 0| Intr:0
I (1361) DRV8311: ES8311 in Slave mode
I (1371) gpio: GPIO[21]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0
I (1381) AUDIO_HAL: Codec mode is 2, Ctrl:1
I (1391) BLUETOOTH_EXAMPLE: [ 3 ] Create audio pipeline for playback
I (1391) BLUETOOTH_EXAMPLE: [4] Create i2s stream to write data to codec chip
I (1401) BLUETOOTH_EXAMPLE: [4.1] Get Bluetooth stream
W (1401) BT_BTC: A2DP Enable with AVRC
I (1421) A2DP_STREAM: Unhandled A2DP event: 4
W (1421) AUDIO_THREAD: Make sure selected the CONFIG_SPIRAM_BOOT_INIT and CONFIG_SPIRAM_ALLOW_STACK_EXTERNAL_MEMORY by make menuconfig
I (1431) AUDIO_THREAD: The audio_a2dp_stream_thread task allocate stack on internal memory
I (1441) BLUETOOTH_EXAMPLE: [4.2] Register all elements to audio pipeline
I (1451) BLUETOOTH_EXAMPLE: [4.3] Link it together [Bluetooth]-->bt_stream_reader-->i2s_stream_writer-->[codec_chip]
I (1461) AUDIO_PIPELINE: link el->rb, el:0x3ffd6300, tag:bt, rb:0x3ffd681c
I (1461) BLUETOOTH_EXAMPLE: [ 5 ] Initialize peripherals
I (1471) AUDIO_THREAD: The button_task task allocate stack on internal memory
I (1481) AUDIO_THREAD: The esp_periph task allocate stack on internal memory
I (1491) BLUETOOTH_EXAMPLE: [ 5.1 ] Create and start input key service
I (1491) AUDIO_THREAD: The input_key_service task allocate stack on internal memory
I (1501) BLUETOOTH_EXAMPLE: [5.2] Create Bluetooth peripheral
I (1511) BLUETOOTH_EXAMPLE: [5.3] Start all peripherals
I (1511) BLUETOOTH_EXAMPLE: [ 6 ] Set up event listener
I (1521) BLUETOOTH_EXAMPLE: [6.1] Listening event from all elements of pipeline
I (1531) BLUETOOTH_EXAMPLE: [ 7 ] Start audio_pipeline
I (1531) AUDIO_ELEMENT: [bt-0x3ffd6300] Element task created
I (1541) AUDIO_THREAD: The i2s task allocate stack on internal memory
I (1551) AUDIO_ELEMENT: [i2s-0x3ffd3e08] Element task created
I (1551) AUDIO_PIPELINE: Func:audio_pipeline_run, Line:359, MEM Total:132652 Bytes

I (1561) AUDIO_ELEMENT: [i2s] AEL_MSG_CMD_RESUME,state:1
I (1571) AUDIO_PIPELINE: Pipeline started
I (1571) BLUETOOTH_EXAMPLE: [ 8 ] Listen for all pipeline events
W (87391) BT_HCI: hcif conn complete: hdl 0x80, st 0x0
W (87451) BT_HCI: hcif link supv_to changed: hdl 0x80, supv_to 8000
W (87681) BT_HCI: hcif link supv_to changed: hdl 0x80, supv_to 32000
W (87801) BT_HCI: hcif link supv_to changed: hdl 0x80, supv_to 8000
E (87821) BT_APPL: bta_av_rc_create ACP handle exist for shdl:0
I (87821) A2DP_STREAM: A2DP bd address:, [50:1f:c6:c9:cc:83]
I (87831) A2DP_STREAM: AVRC conn_state evt: state 1, [50:1f:c6:c9:cc:83]
I (87981) A2DP_STREAM: A2DP audio stream configuration, codec type 0
I (87981) A2DP_STREAM: Bluetooth configured, sample rate=44100
I (87981) A2DP_STREAM: Unhandled A2DP event: 5
I (87981) BLUETOOTH_EXAMPLE: [ * ] Receive music info from Bluetooth, sample_rates=44100, bits=16, ch=2
I (88011) AUDIO_ELEMENT: [i2s] AEL_MSG_CMD_PAUSE
I (88011) AUDIO_ELEMENT: [i2s] AEL_MSG_CMD_RESUME,state:4
I (88051) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (88051) A2DP_STREAM: rn_param.volume:63
W (88341) A2DP_STREAM: AVRC ct remote features 25b
W (88341) A2DP_STREAM: AVRC tg remote features 25b, CT features 2
W (88411) BT_APPL: new conn_srvc id:19, app_id:0
I (88421) A2DP_STREAM: A2DP bd address:, [50:1f:c6:c9:cc:83]
I (88421) A2DP_STREAM: A2DP connection state = CONNECTED
W (88781) A2DP_STREAM: AVRC ct remote features 25b
W (88781) A2DP_STREAM: AVRC tg remote features 25b, CT features 2
W (91621) BT_HCI: hci cmd send: sniff: hdl 0x80, intv(400 800)
W (91721) BT_HCI: hcif mode change: hdl 0x80, mode 2, intv 800, status 0x0
I (99491) BLUETOOTH_EXAMPLE: [ * ] input key id is 3
I (99491) BLUETOOTH_EXAMPLE: [ * ] [Play] play
W (100231) BT_HCI: hcif mode change: hdl 0x80, mode 0, intv 0, status 0x0
I (100241) A2DP_STREAM: AVRC set absolute volume: 8%
I (100241) A2DP_STREAM: Volume is set by remote controller 11%

I (100251) BT_LOG: bta_av_link_role_ok hndl:x41 role:1 conn_audio:x1 bits:1 features:x864b

W (100261) BT_APPL: new conn_srvc id:19, app_id:1
W (105521) ADC_BTN: Old ID:0, New ID:5, Cnt:10
I (105541) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (105541) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (105541) A2DP_STREAM: Volume is set locally to: 16%
I (105561) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (105561) A2DP_STREAM: rn_param.volume:20
W (106311) ADC_BTN: Old ID:5, New ID:0, Cnt:0
I (108411) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (108411) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (108411) A2DP_STREAM: Volume is set locally to: 21%
I (108441) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (108441) A2DP_STREAM: rn_param.volume:26
W (108791) ADC_BTN: Old ID:0, New ID:5, Cnt:9
I (108811) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (108811) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (108811) A2DP_STREAM: Volume is set locally to: 26%
I (108841) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (108841) A2DP_STREAM: rn_param.volume:33
W (108971) ADC_BTN: Old ID:5, New ID:0, Cnt:0
I (109131) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (109131) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (109131) A2DP_STREAM: Volume is set locally to: 31%
I (109161) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (109161) A2DP_STREAM: rn_param.volume:39
I (109591) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (109591) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (109591) A2DP_STREAM: Volume is set locally to: 36%
I (109631) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (109631) A2DP_STREAM: rn_param.volume:45
I (110511) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (110511) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (110511) A2DP_STREAM: Volume is set locally to: 41%
I (110531) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (110531) A2DP_STREAM: rn_param.volume:52
I (110841) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (110841) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (110841) A2DP_STREAM: Volume is set locally to: 46%
I (110881) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (110881) A2DP_STREAM: rn_param.volume:58
I (111461) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (111461) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (111461) A2DP_STREAM: Volume is set locally to: 51%
I (111501) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (111501) A2DP_STREAM: rn_param.volume:64
I (111771) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (111771) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (111771) A2DP_STREAM: Volume is set locally to: 56%
I (111811) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (111811) A2DP_STREAM: rn_param.volume:71
I (112111) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (112111) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (112111) A2DP_STREAM: Volume is set locally to: 61%
I (112131) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (112131) A2DP_STREAM: rn_param.volume:77
I (112441) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (112441) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (112441) A2DP_STREAM: Volume is set locally to: 66%
I (112461) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (112461) A2DP_STREAM: rn_param.volume:83
I (112841) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (112841) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (112841) A2DP_STREAM: Volume is set locally to: 71%
I (112871) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (112881) A2DP_STREAM: rn_param.volume:90
W (113121) ADC_BTN: Old ID:0, New ID:5, Cnt:4
I (113141) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (113141) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (113141) A2DP_STREAM: Volume is set locally to: 76%
I (113181) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (113181) A2DP_STREAM: rn_param.volume:96
W (113841) ADC_BTN: Old ID:5, New ID:0, Cnt:0
I (114061) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (114061) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (114061) A2DP_STREAM: Volume is set locally to: 81%
I (114091) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (114091) A2DP_STREAM: rn_param.volume:102
I (114941) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (114941) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (114941) A2DP_STREAM: Volume is set locally to: 86%
I (114971) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (114971) A2DP_STREAM: rn_param.volume:109
W (115321) ADC_BTN: Old ID:0, New ID:1, Cnt:9
I (115341) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (115341) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (115341) A2DP_STREAM: Volume is set locally to: 91%
I (115371) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (115381) A2DP_STREAM: rn_param.volume:115
I (115501) A2DP_STREAM: AVRC set absolute volume: 89%
I (115501) A2DP_STREAM: Volume is set by remote controller 114%

W (115511) ADC_BTN: Old ID:1, New ID:0, Cnt:0
I (115911) BLUETOOTH_EXAMPLE: [ * ] input key id is 6
I (115911) BLUETOOTH_EXAMPLE: [ * ] [long Vol+] Vol+
I (115911) A2DP_STREAM: Volume is set locally to: 100%
I (115941) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (115941) A2DP_STREAM: rn_param.volume:127
I (117011) BLUETOOTH_EXAMPLE: [ * ] input key id is 5
I (117011) BLUETOOTH_EXAMPLE: [ * ] [long Vol-] Vol-
I (117011) A2DP_STREAM: Volume is set locally to: 95%
I (117031) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (117031) A2DP_STREAM: rn_param.volume:120
I (117891) BLUETOOTH_EXAMPLE: [ * ] input key id is 5
I (117891) BLUETOOTH_EXAMPLE: [ * ] [long Vol-] Vol-
I (117891) A2DP_STREAM: Volume is set locally to: 90%
I (117911) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (117921) A2DP_STREAM: rn_param.volume:114
I (118511) A2DP_STREAM: AVRC set absolute volume: 88%
I (118511) A2DP_STREAM: Volume is set by remote controller 113%

I (118841) BLUETOOTH_EXAMPLE: [ * ] input key id is 5
I (118841) BLUETOOTH_EXAMPLE: [ * ] [long Vol-] Vol-
I (118841) A2DP_STREAM: Volume is set locally to: 108%
I (118871) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (118871) A2DP_STREAM: rn_param.volume:137
W (119441) ADC_BTN: Old ID:1, New ID:3, Cnt:10
I (119461) BLUETOOTH_EXAMPLE: [ * ] input key id is 5
I (119461) BLUETOOTH_EXAMPLE: [ * ] [long Vol-] Vol-
I (119461) A2DP_STREAM: Volume is set locally to: 103%
I (119501) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (119501) A2DP_STREAM: rn_param.volume:130
W (120541) ADC_BTN: Old ID:3, New ID:1, Cnt:0
I (120801) BLUETOOTH_EXAMPLE: [ * ] input key id is 5
I (120801) BLUETOOTH_EXAMPLE: [ * ] [long Vol-] Vol-
I (120801) A2DP_STREAM: Volume is set locally to: 98%
I (120831) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (120831) A2DP_STREAM: rn_param.volume:124
I (121361) BLUETOOTH_EXAMPLE: [ * ] input key id is 5
I (121361) BLUETOOTH_EXAMPLE: [ * ] [long Vol-] Vol-
I (121361) A2DP_STREAM: Volume is set locally to: 93%
I (121401) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (121401) A2DP_STREAM: rn_param.volume:118
I (121531) A2DP_STREAM: AVRC set absolute volume: 92%
I (121531) A2DP_STREAM: Volume is set by remote controller 117%

I (121881) BLUETOOTH_EXAMPLE: [ * ] input key id is 5
I (121881) BLUETOOTH_EXAMPLE: [ * ] [long Vol-] Vol-
I (121881) A2DP_STREAM: Volume is set locally to: 112%
I (121921) A2DP_STREAM: AVRC register event notification: 13, param: 0x0
I (121921) A2DP_STREAM: rn_param.volume:142
I (124531) A2DP_STREAM: AVRC set absolute volume: 18%
I (124531) A2DP_STREAM: Volume is set by remote controller 24%
`