playsound.h File Reference

#include <stdint.h>
#include "fsl_soundcard.h"
#include "fsl_sgtl5000_driver.h"

Go to the source code of this file.

Data Structures
struct	wave_header_t
struct	wave_file_t

Macros
#define	WAVE_FILE_HEADER_SIZE
	< brief standards Winodws PCM wave file header length More...

Typedefs
typedef uint32_t(*	APP_GET_DATA_FUNC )(uint32_t NumBytesReq, uint8_t **ppDada, uint32_t offset)
	< More...

Functions
int	PLAYSOUND_GetWaveFileInfo (uint8_t *pBuffer, wave_file_t *pWave)
	Decode wave file header, only support standard Windows PCM uncompressed file. More...
int	PLAYSOUND_Play (APP_GET_DATA_FUNC fpAppGetData)
	Use sound card to play audio, need wave file data, only support standard Windows PCM uncompressed file. More...
void	PLAYSOUND_Init (void)
	Init sound card. More...

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Data Structure Documentation

struct wave_header_t

Data Fields
uint16_t	bit_samp
uint16_t	bitSamp
uint16_t	block_align
uint16_t	blockAlign
uint32_t	byte_rate
uint32_t	byteRate
uint16_t	channels
uint8_t	data_flag[4]
uint8_t	dataFlag[4]
uint8_t	fmt[4]
uint32_t	fmt_len
uint32_t	fmtLen
uint32_t	length
uint8_t	riff[4]
uint32_t	samp_freq
uint32_t	sampFreq
uint32_t	size
uint16_t	tag
uint8_t	wave_flag[4]
uint8_t	waveFlag[4]

struct wave_file_t

Data Fields
uint32_t *	data
wave_header_t	header
uint32_t *	pData

Macro Definition Documentation

#define WAVE_FILE_HEADER_SIZE

Standard Windows PCM wave file header struct.

Typedef Documentation

typedef uint32_t(* APP_GET_DATA_FUNC)(uint32_t NumBytesReq, uint8_t **ppDada, uint32_t offset)

Get data callback functions Prototypes API funcions

Function Documentation

int PLAYSOUND_GetWaveFileInfo	(	uint8_t *	pBuffer,
		wave_file_t *	pWave
	)

This function decode Windows PCM wave file data and, if success, loaded file header information into struct instance.

Parameters

[in]	pBuffer	Pointer to a wave file start address.
[in]	pWave	Pointer to a wave_file struct.

Returns

0:succ 1:fail

void PLAYSOUND_Init

(

void

)

This function will initialize controller(K70's sai moudle) and decoder(SGTL5000) and config them with default values for play audio.

Note

8 bit is not supported in SGTL5000

int PLAYSOUND_Play

(

APP_GET_DATA_FUNC

fpAppGetData

)

Before calling this function, we must make sure PLAYSOUND_Init has alrady called. This function will play audio according to wave file data which acquired by a user callback function. Prototyoe of "GetData" function: uint32_t APP_GetData(uint32_t NumBtytesReq, uint8_t **ppData, uint32_t offset)

Parameters

[in]

fpAppGetData

Pointer to a function which is called by PLAYSOUND_Play routine for getting data.

Returns

0:succ 1:fail