#include <string.h>
#include "simple_mp3_player.h"
#include "FreeRTOS.h"
#include "queue.h"
#include "romlib_api.h"
#include "codec_manager.h"
#include "ci_log_config.h"
#include "mp3dec.h"
#include "ci_log.h"
#include "board.h"
#include "flash_rw_process.h"

结构体
struct	smp_msg_t

struct	ci_mp3_header_t

struct	smp_info_t

宏定义
#define	SMP_SOURCE_DATA_BUF_SIZE 1024

#define	SMP_MSG_QUEUE_LENGHT 20

#define	SMP_PCM_BUF_COUNT 4

枚举
enum	smp_status_t { SMP_STATE_START, SMP_STATE_PLAY, SMP_STATE_STOP, SMP_STATE_IDLE }

函数
static void	task_simple_mp3_player (void *pvParameters)
	Task function of player 更多...

static void	smp_send_msg (smp_msg_t msg, BaseType_t xHigherPriorityTaskWoken)

int	smp_init (void)
	Initialize the simple mp3 player module. 更多...

int	smp_play (uint32_t data_addr, void *play_end_callback)
	Start playing. 更多...

void	smp_stop ()

void	audio_play_set_vol_gain (int32_t gain)
	调节播放音量更多...

void	audio_play_hw_pa_da_ctl (FunctionalState cmd, bool is_control_pa)
	pa、da控制，可选择是否控制功放更多...

static int	smp_start_play_inner (smp_msg_t *msg)
	Inner start playing function. 更多...

static void	wait_codec_play_finish ()

static int	smp_decode_one_frame (void)
	Decode one frame. 更多...

static int	smp_stop_play_inner (int32_t play_cb_state)

变量
smp_info_t	smp_info

结构体说明

◆ smp_msg_t

struct smp_msg_t

成员变量
uint32_t	data_addr
smp_msg_id_t	msg_id
SMP_PLAY_END_CALLBACK	play_end_callback

◆ ci_mp3_header_t

struct ci_mp3_header_t

成员变量
char	CI[2]
uint32_t	file_size
char	flag
uint16_t	frame_flag
char	frame_ID[4]
uint32_t	frame_size
char	ID3[3]
uint32_t	pcm_size
char	revision
uint32_t	total_frame_size
char	ver

◆ smp_info_t

struct smp_info_t

成员变量
uint8_t	channels
uint32_t	data_addr
uint32_t	decode_frame_count
HMP3Decoder	decoder_handle
uint32_t	frame_pcm_size
QueueHandle_t	msg_queue
uint32_t	output_samples
short *	pcm_buffer
uint32_t	pcm_buffer_size
SMP_PLAY_END_CALLBACK	play_end_callback
uint32_t	sample_rate
uint32_t	source_buf_bytes_left
uint8_t	source_data_buf[1024]
uint32_t	source_file_bytes_left
uint32_t	source_frame_size
smp_status_t	state
uint32_t	total_pcm_size

宏定义说明

◆ SMP_MSG_QUEUE_LENGHT

#define SMP_MSG_QUEUE_LENGHT 20

◆ SMP_PCM_BUF_COUNT

#define SMP_PCM_BUF_COUNT 4

◆ SMP_SOURCE_DATA_BUF_SIZE

#define SMP_SOURCE_DATA_BUF_SIZE 1024

枚举类型说明

◆ smp_status_t

enum smp_status_t

枚举值
SMP_STATE_START
SMP_STATE_PLAY
SMP_STATE_STOP
SMP_STATE_IDLE

函数说明

◆ audio_play_hw_pa_da_ctl()

void audio_play_hw_pa_da_ctl	(	FunctionalState	cmd,
		bool	is_control_pa
	)

pa、da控制，可选择是否控制功放

参数

cmd pa使能或失能

◆ audio_play_set_vol_gain()

void audio_play_set_vol_gain ( int32_t gain )

调节播放音量

参数

gain 音量(0–100)

◆ smp_decode_one_frame()

static int smp_decode_one_frame ( void )

static

Decode one frame.

返回: int 0: Decode failed; 1: Decode successed,and the PCM buffer of codec manager is full, you can do some delay before the next call to this function to free up CPU for other tasks; 2: Decode successed,and the PCM buffer of codec manager is not full, you'd better call this function again immediately. 3: End of file, there's no source data any more, end of play.

◆ smp_init()

int smp_init ( void )

Initialize the simple mp3 player module.

返回: int 1: successed; not 1: failed.

◆ smp_play()

int smp_play	(	uint32_t	data_addr,
		void *	play_end_callback
	)

Start playing.

参数

data_addr	uint32_t It's used to specifiy the address of the mp3 data.
play_end_callback	A pointer to a function that will be called when play to end.

返回: int 1: successed; not 1: failed. t

◆ smp_send_msg()

static void smp_send_msg	(	smp_msg_t *	msg,
		BaseType_t *	xHigherPriorityTaskWoken
	)

static

◆ smp_start_play_inner()

static int smp_start_play_inner ( smp_msg_t * msg )

static

Inner start playing function.

参数

msg	A pointer to a smp_msg_t structure used to input data address and callback function.

返回: int 0:successed, not 0:failed.

◆ smp_stop()

void smp_stop ( )

◆ smp_stop_play_inner()

static int smp_stop_play_inner ( int32_t play_cb_state )

static

◆ task_simple_mp3_player()

static void task_simple_mp3_player ( void * pvParameters )

static

Task function of player

参数

pvParameters Task parameter.

◆ wait_codec_play_finish()

static void wait_codec_play_finish ( )

static

变量说明

◆ smp_info

smp_info_t smp_info

初始值:

= {
    .msg_queue = NULL,
    .state = SMP_STATE_IDLE,
    .pcm_buffer = NULL,
    .source_file_bytes_left = 0,
    .source_buf_bytes_left = 0,
}