gaudio_driver_record.h

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/*
 * This file is subject to the terms of the GFX License. If a copy of
 * the license was not distributed with this file, you can obtain one at:
 *
 *              http://ugfx.io/license.html
 */
 
/**
 * @file    src/gaudio/gaudio_driver_record.h
 * @brief   GAUDIO - Audio Recording driver header file.
 *
 * @defgroup GAUDIO_Driver_Record Driver Recording
 * @ingroup GAUDIO
 *
 * @brief Recording driver interface for the GAUDIO module.
 *
 * @{
 */
 
#ifndef _GAUDIO_RECORD_LLD_H
#define _GAUDIO_RECORD_LLD_H
 
#include "../../gfx.h"
 
#if (GFX_USE_GAUDIO && GAUDIO_NEED_RECORD) || defined(__DOXYGEN__)
 
/*===========================================================================*/
/* Type definitions                                                          */
/*===========================================================================*/
 
/**
 * @brief               Get a free block of audio data that we can record into
 * @return              A pointer to the GAaudioData structure or NULL if none is currently available
 *
 * @note                Defined in the high level GAUDIO code for use by the GAUDIO record drivers.
 *
 * @iclass
 * @notapi
 */
#define gaudioRecordGetFreeBlockI()     gfxBufferGetI()
 
/**
 * @brief               Save a block of recorded audio data ready for the application
 *
 * @param[in] paud      The GDataBuffer block with data.
 *
 * @note                Defined in the high level GAUDIO code for use by the GAUDIO record drivers.
 *
 * @iclass
 * @notapi
 */
void gaudioRecordSaveDataBlockI(GDataBuffer *paud);
 
/**
 * @brief               Signal that all recording has now stopped
 *
 * @note                Defined in the high level GAUDIO code for use by the GAUDIO record drivers.
 *
 * @iclass
 * @notapi
 */
void gaudioRecordDoneI(void);
 
/*===========================================================================*/
/* External declarations.                                                    */
/*===========================================================================*/
 
#ifdef __cplusplus
extern "C" {
#endif
 
/**
 * @brief               Initialise the record driver
 * @return              gTrue if the channel, frequency and format are valid.
 *
 * @param[in] channel   The channel to use (see the driver for the available channels provided)
 * @param[in] frequency The sample frequency to use
 * @param[in] format    The sample format
 *
 * @note                The driver will always have been stopped and de-init before this is called.
 *
 * @api
 */
gBool gaudio_record_lld_init(gU16 channel, gU32 frequency, ArrayDataFormat format);
 
/**
 * @brief               Start the audio recording
 *
 * @api
 */
void gaudio_record_lld_start(void);
 
/**
 * @brief               Stop the audio recording.
 *
 * @note                Some drivers may only stop recording at a data block boundary.
 * @note                This routine should not return until any currently active buffers have been
 *                      saved (even if with zero length) and @p gaudioRecordDoneI() has been called.
 *
 * @api
 */
void gaudio_record_lld_stop(void);
 
#ifdef __cplusplus
}
#endif
 
#endif /* GFX_USE_GAUDIO && GAUDIO_NEED_RECORD */
 
#endif /* _GAUDIO_RECORD_LLD_H */
/** @} */