--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gsm-fw/L1/audio_include/l1audio_btapi.h	Thu Aug 28 18:40:12 2014 +0000
@@ -0,0 +1,109 @@
+/****************************************************
+/  FILE NAME:- BT_L1_API.h file.
+/ ****************************************************/
+#include "l1sw.cfg"
+#include "l1_types.h"
+#if(L1_BT_AUDIO==1)
+
+/****************************************************
+/ Data structure defination
+/ ****************************************************/
+#define BT_STATUS_ERROR    1
+#define BT_STATUS_OK          0
+
+/*-------------------------------------------------------------------------------
+ * L1AudioPcmStatus type
+ *
+ *     Defines status of current PCM buffer
+ *
+ */
+typedef unsigned char L1AudioPcmStatus;
+
+#define L1_PCM_READY		(0x01)	/* the next PCM block is ready */
+#define L1_PCM_PENDING		(0x02)	/* the next PCM block is not ready yet.
+                                       a callback will be made when it will be ready */
+#define L1_PCM_MEDIA_ENDED	(0x03)	/* no PCM blocks are available anymore.
+                                       (e.g. current track ended) */
+#define L1_PCM_FAILED		(0x04)	/* no PCM blocks are ready. general failure */
+
+typedef struct _L1AudioPcmBlock
+{
+	UWORD8 *pcmBuffer; /* a pointer to the buffer holding the PCM data */
+	int lengthInBytes;        /* how many bytes are currently in the PCM buffer */
+} L1AudioPcmBlock;
+
+/****************************************************/
+typedef struct _L1AudioPcmConfig
+{
+	int sampleRate;		/* PCM sample rate in Hz (e.g. 44100, 48000, 32000, 16000) */
+	short numChannels;		/* number of audio channels (1 or 2, for mono or stereo) */
+	short bitsPerSample;	/* number of bits per PCM sample. must always be 16. */
+} L1AudioPcmConfig;
+/****************************************************/
+
+/****************************************************/
+typedef void (*L1AudioPcmCallback)(L1AudioPcmBlock *pcmBlock);
+/*Description:- A callback function, implemented at BTHAL_MM, which will be called by L1-MCU to send a ready PCM block.
+The callback will be called by L1-MCU only after a previous call from BTHAL_MM to request a PCM block returned Pending.
+NOTE: Since the callback is called from L1 context, the BTHAL_MM code should not spend considerable time in this function.
+It must not block the L1-MCU task.
+
+Parameters:
+pcmBlock     [in] - a pointer to a PCM block structure
+Returns: void
+*/
+
+/****************************************************/
+typedef void (*L1AudioConfigureCallback) (L1AudioPcmConfig *pcmConfig);
+
+/*Description:- A callback function, implemented at BTHAL_MM, that will be called by MCU-L1 to specify the next PCM configuration.
+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
+A2DP stream, and after the configuration is completed, it will start pulling PCM blocks from the L1-MCU stack.
+Parameters: pcmConfig    [in] - pointer to struct with the PCM config info
+*/
+
+/****************************************************/
+
+
+BOOL L1Audio_InformBtAudioPathState (BOOL connected);
+/*Description: - This function is implemented in L1-MCU and called by BTHAL_MM to inform L1,
+whether the audio path to BT is up or down. The use of this function is optional. It should be used by BTHAL_MM,
+to find out that L1-MCU is not being told byBMI/MMI, whether to use the BT audio or not.
+
+Parameters:- connected  [in] -
+TRUE - path is valid, MM should send the PCM to BT
+FALSE - path is not valid, MM should send the PCM to handset default audio device
+Returns: void
+*/
+
+/****************************************************/
+void L1Audio_RegisterBthal (L1AudioPcmCallback pcmCallback, L1AudioConfigureCallback configCallback);
+/*Description: - This function is implemented in L1-MCU and called by BTHAL_MM to init the L1-MCU for BT audio
+and to register callback functions that the L1-MCU will need to call into BTHAL.
+
+Parameters:
+pcmCallback    [in] - pointer of the PCM callback function.
+configCallback [in] - pointer of the config callback function.
+Returns: void
+*/
+
+
+/****************************************************/
+L1AudioPcmStatus L1Audio_PullPcmBlock (L1AudioPcmBlock *pcmBlock);
+/*Description: - This function is implemented in L1-MCU and called by BTHAL_MM to pull the next PCM block.
+If L1 already has a ready PCM block it should fill he pcmBlock parameter and return L1_PCM_READY.
+If a block is not ready yet, it should return with proper return type as defined below.
+
+Parameters:
+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 .
+Returns:
+L1_PCM_READY:	  The next PCM block is ready now
+L1_PCM_PENDING: The next PCM block is not ready yet, a callback will be made by MM when it is ready
+L1_PCM_MEDIA_ENDED: no more PCM blocks will be available anymore for the current track
+L1_PCM_FAILED:	  other failures
+*/
+
+/****************************************************/
+
+#endif
+