Android 藍牙AVRCP功能的實現

1、Androoid 藍藍牙AVRRCP功能能的實現作者:Maacro LiuAVRCPP的按鍵定定義:sdkemullatorrkeyymapssAVRRCP.kklkey 2200 MEDDIA_PPLAY_PAUSSE WAKKEkey 2201 MEDDIA_PPLAY_PAUSSE WAKKEkey 1166 MEDDIA_SSTOP WAKKEkey 1163 MEDDIA_NNEXT WAKKEkey 1165 MEDDIA_PPREVIIOUS WAKKEkey 1168 MEDDIA_RREWINND WAKKEkey 2208 MEDDIA_FFAST_FORWWARD WAK

2、KEBCM(bbroaddcom)宏定義需要要打開:BOARDD_HAVVE_BLLUETOOOTH_BCM := ttrueBT音頻控控制的代碼碼exterrnalblueetootthblluezaudiiocoontrool.c(1) 按按鍵的MAAPstatiic sttructt consst chhar *namee;uintt8_t avrccp;uintt16_tt uinnput; keyy_mapp = PPLAY,PLAYY_OP,KEY_PLAYYCD , SSTOP,STOPP_OP,KEY_STOPPCD , PPAUSEE,PAUSSE_OPP,KEY_PAUSS

3、ECD , FFORWAARD,FORWWARD_OP,KEY_NEXTTSONGG , BBACKWWARD,BACKKWARDD_OP,KEY_PREVVIOUSSSONGG , RREWINND,REWIIND_OOP,KEY_REWIIND , FFAST FORWWARD,FASTT_FORRWARDD_OP,KEY_FASTTFORWWARD , NUULL ;(2) 按按鍵處理statiic vooid hhandlle_paanel_passsthroough(struuct ccontrrol *conttrol, for (i = 0; key_mapi.nname !=

4、NNULL; i+) uinnt8_tt keyy_quiirks;if (opperannds00 & 0 x7FF) != keyy_mappi.avrccp)coontinnue;DBGG(AVVRCP: %s %s, keyy_e, sttatuss);keyy_quiirks = coontrool-kkey_qquirkkskeey_maapi.avrrcp;if (keyy_quiirks & QUUIRK_NO_RRELEAASE) iff (!ppresssed) DDBG(AVRCCP: IIgnorring releease);bbreakk;DBBG

5、(AAVRCPP: trreatiing kkey ppresss as presss + releease);seend_kkey(ccontrrol-uinpput, key_mapi.uuinpuut, 11);seend_kkey(ccontrrol-uinpput, key_mapi.uuinpuut, 00);brreak;sennd_keey(coontrool-uuinpuut, kkey_mmapii.uiinputt, prresseed);breeak;HCIDUUMP數據據分析以Sonyy耳機DRRC-BTT15為例例#adb shelll#hciddump X左鍵:

6、ACLL datta: hhandlle 122 flaags 00 x02 dlenn 12 LL2CAPP(d): cidd 0 x00042 len 8 ppsm 00 00000: 330 111 0e 00 448 7cc 4c 000 00.HH|L. HCII Commmandd: Exxit SSnifff Modde (00 x02|0 x00004) plenn 2 00000: 00c 000 . HCII Eveent: Max Slotts Chhangee (0 xx1b) plenn 3 00000: 00c 000 05 . HCII Eveent: Modee

7、 Chaange (0 x114) pplen 6 00000: 000 0cc 00 00 000 000 . HCII Eveent: Commmand Stattus (0 x0ff) pllen 44 00000: 00c 011 04 08 . ACLL datta: hhandlle 122 flaags 00 x02 dlenn 12 LL2CAPP(d): cidd 0 x00042 len 8 ppsm 00 00000: 440 111 0e 00 448 7cc cc 00 .H|? HCII Eveent: Numbber oof Coompleeted Packket

8、s (0 x113) pplen 5 00000: 001 0cc 00 02 000 .播放/暫停停: ACLL datta: hhandlle 122 flaags 00 x02 dlenn 12 LL2CAPP(d): cidd 0 x00042 len 8 ppsm 00 00000: 550 111 0e 00 448 7cc 4b 00 P.H|KK. ACLL datta: hhandlle 122 flaags 00 x02 dlenn 12 LL2CAPP(d): cidd 0 x00042 len 8 ppsm 00 00000: 660 111 0e 00 448 7cc

9、 cb 00 .H|? HCII Eveent: Numbber oof Coompleeted Packkets (0 x113) pplen 5 00000: 001 0cc 00 02 000 .右鍵: ACLL datta: hhandlle 122 flaags 00 x02 dlenn 12 LL2CAPP(d): cidd 0 x00042 len 8 ppsm 00 00000: 770 111 0e 00 448 7cc 46 00 p.H|FF. ACLL datta: hhandlle 122 flaags 00 x02 dlenn 12 LL2CAPP(d): cidd

10、 0 x00042 len 8 ppsm 00 00000: 880 111 0e 00 448 7cc c6 00 .H|? HCII Eveent: Numbber oof Coompleeted Packkets (0 x113) pplen 5 00000: 001 0cc 00 02 000 . HCII Eveent: Max Slotts Chhangee (0 xx1b) plenn 3 00000: 00c 000 01 . HCII Eveent: Modee Chaange (0 x114) pplen 6 00000: 000 0cc 00 02 cc8 000 .?然

11、后將coontrool.c的日志打印出出來:按一次”“播放/暫暫停鍵”:D/ACRRVP ( 237): - haandlee_pannel_ppasstthrouugh -D/ACRRVP ( 237): opperannds00 = 46 對應PPAUSEE_OPD/ACRRVP ( 237): keey_quuirkss = 00, prresseed = 1按鍵按按下D/ACRRVP ( 237): coontrool-uuinpuut = ffffffffee,sennd_keey = 201對對應MEDDIA_PPLAY_PAUSSED/ACRRVP ( 237): - haand

12、lee_pannel_ppasstthrouugh -D/ACRRVP ( 237): opperannds00 = c6 (= 00 x46 0 xx80 表表示按鍵釋釋放了)D/ACRRVP ( 237): keey_quuirkss = 00, prresseed = 0按鍵釋釋放D/ACRRVP ( 237): coontrool-uuinpuut = ffffffffee,sennd_keey = 201 對應MEEDIA_PLAYY_PAUUSE再按一次”“播放/暫暫停鍵”:D/ACRRVP ( 237): - haandlee_pannel_ppasstthrouugh -D/A

13、CRRVP ( 237): opperannds00 = 44 對應PPLAY_OPD/ACRRVP ( 237): keey_quuirkss = 00, prresseed = 1 按鍵鍵按下D/ACRRVP ( 237): coontrool-uuinpuut = ffffffffee,sennd_keey = 200 對應MMEDIAA_PLAAY_PAAUSED/ACRRVP ( 237): - haandlee_pannel_ppasstthrouugh -D/ACRRVP ( 237): opperannds00 = c4D/ACRRVP ( 237): keey_quuirks

14、s = 00, prresseed = 0 按按鍵釋放D/ACRRVP ( 237): coontrool-uuinpuut = ffffffffee,sennd_keey = 200 對應MEEDIA_PLAYY_PAUUSEnext key:D/ACRRVP ( 237): - haandlee_pannel_ppasstthrouugh -D/ACRRVP ( 237): opperannds00 = 4b對應應FORWWARD_OPD/ACRRVP ( 237): keey_quuirkss = 00, prresseed = 1D/ACRRVP ( 237): coontrool-u

15、uinpuut = ffffffffee,sennd_keey = 163 對應MEEDIA_NEXTTD/ACRRVP ( 237): - haandlee_pannel_ppasstthrouugh -D/ACRRVP ( 237): opperannds00 = cbD/ACRRVP ( 237): keey_quuirkss = 00, prresseed = 0D/ACRRVP ( 237): coontrool-uuinpuut = ffffffffee,sennd_keey = 163prev key:D/ACRRVP ( 237): - haandlee_pannel_ppas

16、stthrouugh -D/ACRRVP ( 237): opperannds00 = 4c 對應應BACKKWARDD_OPD/ACRRVP ( 237): keey_quuirkss = 00, prresseed = 1D/ACRRVP ( 237): coontrool-uuinpuut = ffffffffee,sennd_keey = 165 對應D/ACRRVP ( 237): - haandlee_pannel_ppasstthrouugh -D/ACRRVP ( 237): opperannds00 = ccD/ACRRVP ( 237): keey_quuirkss = 0

17、0, prresseed = 0D/ACRRVP ( 237): coontrool-uuinpuut = ffffffffee,sennd_keey = 165 MEDIIA_PRREVIOOUS從上面可以以看到blluetoooth的的協議棧bblueZZ是沒有問問題的將 fraamewoorksbaseelibbsuiiEveentHuub.cppp的LOOG打開，只只能看到了了conttrol.c的日志志，EveentHuub的getEEventt完全不響響應觀察所有l(wèi)log日志志發(fā)現，oopenDDevicce里也沒沒有裝載AAVRCPP.kl初步判斷eeventt有問題eventt

18、分析：$ adbb sheell# cd /prooc/buus/innput# catt devvicesscat ddevicces# catt devvicesscat ddeviccesI: Buus=00019 VVendoor=00001 PProduuct=00001 Verssion=00011 參考考s3c-keeypadd.cN: Naame=s3c-keeypadd inpuut_deev-nname = DEEVICEE_NAMME;P: Phhys=ss3c-keeypadd/inpput0 innput_dev-phyys = s3cc-keyypad/inpuut

19、0;S: Syysfs=/devvicess/virrtuall/inpput/iinputt0 virttual的的?U: Unniq=H: Haandleers=eeventt0B: EVV=3B: KEEY=400004000 0I: Buus=00019 VVendoor=00001 PProduuct=00001 Verssion=01000參考vpaad_buuttonns.cN: Naame=s3c-eiintkeey inpuut-nname = pddev-namee, gppio_kkeys_deviice_ddriveer.naame= ss3c-eiintkeey,P:

20、 Phhys=ggpio-keyss/inpput0 inpuut-pphys = ggpio-keyss/inpput0S: Syysfs=/devvicess/plaatforrm/s33c-eiintkeey/innput/inpuut1 為什么么這里是pplatfform目目錄?U: Unniq=H: Haandleers=eeventt1B: EVV=3B: KEEY=10000000 0 00 0I: Buus=00018 VVendoor=00000 PProduuct=00000 Verssion=00000 參考amrri_tss.cN: Naame=amrii_ts amr

21、ii_ts_drivver.nname = aamri_tsP: Phhys= 沒沒有定義S: Syysfs=/devvicess/plaatforrm/s33c24440-i22c.0/i2c-0/0-00033/iinputt/inpput2 為什什么這里是是plattformm目錄?U: Unniq=H: Haandleers=eeventt2B: EVV=bB: KEEY=4000 0 0 0 0 0 4000008000 40 0 0 100000B: ABBS=266500000 0I: Buus=00000 VVendoor=00000 PProduuct=00000 Verss

22、ion=00000N: Naame=ecommpasss_dattaP: Phhys=S: Syysfs=/devvicess/virrtuall/inpput/iinputt3U: Unniq=H: Haandleers=eeventt3B: EVV=9B: ABBS=3007bf從上面可以以看到，完完全沒有AAVRCPP的eveent。解決辦法:Kerneel$ makke meenucoonfiggCONFIIG_INNPUT_UINPPUT解決后的狀狀況:$ adbb sheell# cd /prooc/buus/innput# catt devvicess顯示增加了了一個evvent

23、I: Buus=00005 VVendoor=00000 PProduuct=00000 Verssion=00000N: Naame=AVRCCPP: Phhys=S: Syysfs=/devvicess/virrtuall/inpput/iinputt4U: Unniq=H: Haandleers=eeventt4B: EVV=1000007B: KEEY=100300 168 0 0 0 0 0B: REEL=0看opennDeviice的信信息:D/EveentHuub( 84): EvventHHub:readdNotiify nnfd: 87D/EveentHuub( 84): O

24、ppeninng deevicee: /ddev/iinputt/eveent4D/EveentHuub( 84): Geettinng keeys.D/EveentHuub( 84): Geettinng abbsoluute ccontrrolleers.D/EveentHuub( 84): keeylayyoutFFilenname = /ssysteem/ussr/keeylayyout/AVRCCP.kll I/EveentHuub( 84): Neew keeyboaard: deviice-id=00 x100003 ddevnaame=AVRCCP ppropNName=hw.

25、keybboardds.655539.devnname keyylayoout=/sysstem/usr/keyllayouut/AVVRCP.klI/EveentHuub( 84): Neew deevicee: paath=/dev/inpuut/evvent44 namme=AVVRCP id=00 x100003 (of 00 x4) indeex=4 fd=1196 cclassses=00 x1D/EveentHuub( 84): Adddingg devvice /devv/inpput/eeventt4 0 xx3618800 aat 4, id = 3, claassess

26、= 00 x1D/EveentHuub( 84): Reeportting deviice oopeneed: iid=0 xx100003, nname=/devv/inpput/eeventt4按鍵時也可可以看到EEventtHub的的信息了:Log如下下:D/ACRRVP ( 236): - haandlee_pannel_ppasstthrouugh -D/ACRRVP ( 236): opperannds00 = 46D/ACRRVP ( 236): keey_quuirkss = 00, prresseed = 1D/ACRRVP ( 236): coontrool-uuinpuu

27、t = 14,ssend_key = 2001 coontrool.c發(fā)發(fā)出2011號鍵，按按鍵按下了了D/EveentHuub( 84): /ddev/iinputt/eveent4 got: t0=937, t1=5829930, typee=1, codee=2011, v=1 表示從eeventt4得到2201號鍵鍵 MEDDIA_PPLAY_PAUSSED/EveentHuub( 84): ieev.coode=2201 kkeyCoode=885 fllags=0 x0000000001 eerr=00D/EveentHuub( 84): /ddev/iinputt/eveent4

28、 got: t0=937, t1=6002241, typee=0, codee=0, v=0D/AuddioHaardwaare( 611): AAudiooStreeamOuutALSSA:ssetPaarameeterss() rroutiing=00D/ACRRVP ( 236): - haandlee_pannel_ppasstthrouugh -D/ACRRVP ( 236): opperannds00 = c6D/ACRRVP ( 236): keey_quuirkss = 00, prresseed = 0D/ACRRVP ( 236): coontrool-uuinpuut

29、= 14,ssend_key = c99D/EveentHuub( 84): /ddev/iinputt/eveent4 got: t0=937, t1=6643391, typee=1, codee=2011, v=0 conttrol.c發(fā)出2201號鍵鍵，按鍵釋釋放了D/EveentHuub( 84): ieev.coode=2201 kkeyCoode=885 fllags=0 x0000000001 eerr=00D/EveentHuub( 84): /ddev/iinputt/eveent4 got: t0=937, t1=6644406, typee=0, codee=0, v=0D/A2DDP ( 61): a22dp_sstopD/A2DDP ( 61): blluetoooth_stoppE/BluuetooothEvventLLoop.cpp(