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annotate gsm-fw/L1/audio_include/l1audio_btapi.h @ 1001:5e73df562a7d

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loadtools/README: typo fix
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Sun, 06 Mar 2016 22:07:18 +0000
parents 527956ce73c7
children
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603
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1 /****************************************************
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2 / FILE NAME:- BT_L1_API.h file.
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3 / ****************************************************/
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4 #include "../../include/config.h"
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5 #include "../include/l1_confg.h"
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6 #include "../include/l1_types.h"
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7 #if(L1_BT_AUDIO==1)
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9 /****************************************************
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10 / Data structure defination
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11 / ****************************************************/
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12 #define BT_STATUS_ERROR 1
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13 #define BT_STATUS_OK 0
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14
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15 /*-------------------------------------------------------------------------------
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16 * L1AudioPcmStatus type
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17 *
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18 * Defines status of current PCM buffer
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19 *
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20 */
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21 typedef unsigned char L1AudioPcmStatus;
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23 #define L1_PCM_READY (0x01) /* the next PCM block is ready */
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24 #define L1_PCM_PENDING (0x02) /* the next PCM block is not ready yet.
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25 a callback will be made when it will be ready */
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26 #define L1_PCM_MEDIA_ENDED (0x03) /* no PCM blocks are available anymore.
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27 (e.g. current track ended) */
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28 #define L1_PCM_FAILED (0x04) /* no PCM blocks are ready. general failure */
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29
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30 typedef struct _L1AudioPcmBlock
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31 {
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32 UWORD8 *pcmBuffer; /* a pointer to the buffer holding the PCM data */
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33 int lengthInBytes; /* how many bytes are currently in the PCM buffer */
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34 } L1AudioPcmBlock;
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35
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36 /****************************************************/
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37 typedef struct _L1AudioPcmConfig
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38 {
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39 int sampleRate; /* PCM sample rate in Hz (e.g. 44100, 48000, 32000, 16000) */
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40 short numChannels; /* number of audio channels (1 or 2, for mono or stereo) */
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41 short bitsPerSample; /* number of bits per PCM sample. must always be 16. */
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42 } L1AudioPcmConfig;
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43 /****************************************************/
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44
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45 /****************************************************/
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46 typedef void (*L1AudioPcmCallback)(L1AudioPcmBlock *pcmBlock);
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47 /*Description:- A callback function, implemented at BTHAL_MM, which will be called by L1-MCU to send a ready PCM block.
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48 The callback will be called by L1-MCU only after a previous call from BTHAL_MM to request a PCM block returned Pending.
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49 NOTE: Since the callback is called from L1 context, the BTHAL_MM code should not spend considerable time in this function.
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50 It must not block the L1-MCU task.
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51
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52 Parameters:
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53 pcmBlock [in] - a pointer to a PCM block structure
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54 Returns: void
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55 */
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56
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57 /****************************************************/
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58 typedef void (*L1AudioConfigureCallback) (L1AudioPcmConfig *pcmConfig);
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59
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60 /*Description:- A callback function, implemented at BTHAL_MM, that will be called by MCU-L1 to specify the next PCM configuration.
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61 L1-MCU will call this function before a new audio track is going to start playing. BT side will use this info to reconfigure the current
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62 A2DP stream, and after the configuration is completed, it will start pulling PCM blocks from the L1-MCU stack.
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63 Parameters: pcmConfig [in] - pointer to struct with the PCM config info
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64 */
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65
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66 /****************************************************/
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67
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68
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69 BOOL L1Audio_InformBtAudioPathState (BOOL connected);
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70 /*Description: - This function is implemented in L1-MCU and called by BTHAL_MM to inform L1,
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71 whether the audio path to BT is up or down. The use of this function is optional. It should be used by BTHAL_MM,
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72 to find out that L1-MCU is not being told byBMI/MMI, whether to use the BT audio or not.
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73
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74 Parameters:- connected [in] -
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75 TRUE - path is valid, MM should send the PCM to BT
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76 FALSE - path is not valid, MM should send the PCM to handset default audio device
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77 Returns: void
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78 */
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79
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80 /****************************************************/
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81 void L1Audio_RegisterBthal (L1AudioPcmCallback pcmCallback, L1AudioConfigureCallback configCallback);
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82 /*Description: - This function is implemented in L1-MCU and called by BTHAL_MM to init the L1-MCU for BT audio
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83 and to register callback functions that the L1-MCU will need to call into BTHAL.
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84
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85 Parameters:
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86 pcmCallback [in] - pointer of the PCM callback function.
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87 configCallback [in] - pointer of the config callback function.
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88 Returns: void
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89 */
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90
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91
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92 /****************************************************/
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93 L1AudioPcmStatus L1Audio_PullPcmBlock (L1AudioPcmBlock *pcmBlock);
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94 /*Description: - This function is implemented in L1-MCU and called by BTHAL_MM to pull the next PCM block.
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95 If L1 already has a ready PCM block it should fill he pcmBlock parameter and return L1_PCM_READY.
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96 If a block is not ready yet, it should return with proper return type as defined below.
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97
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98 Parameters:
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99 pcmBlock [out] - a pointer to PCM block struct. if the function returns MM_PCM_READY, MM should fill this struct with the info of the current ready PCM block .
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100 Returns:
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101 L1_PCM_READY: The next PCM block is ready now
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102 L1_PCM_PENDING: The next PCM block is not ready yet, a callback will be made by MM when it is ready
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103 L1_PCM_MEDIA_ENDED: no more PCM blocks will be available anymore for the current track
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104 L1_PCM_FAILED: other failures
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parents:
diff changeset
105 */
d638de8cc6b8 gsm-fw/L1/audio_*/*.h: replacing Leonardo headers with LoCosto versions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
106
d638de8cc6b8 gsm-fw/L1/audio_*/*.h: replacing Leonardo headers with LoCosto versions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
107 /****************************************************/
d638de8cc6b8 gsm-fw/L1/audio_*/*.h: replacing Leonardo headers with LoCosto versions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
108
d638de8cc6b8 gsm-fw/L1/audio_*/*.h: replacing Leonardo headers with LoCosto versions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
109 #endif