STM32H750XB_RT-THREAD/38-SAI—音频/SAI—MP3播放器/User/mp3Player/mp3Player.c

/*
******************************************************************************
* @file    recorder.c
* @author  fire
* @version V1.0
* @date    2015-xx-xx
* @brief   WM8978<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܲ<EFBFBD><EFBFBD><EFBFBD>+mp3<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
******************************************************************************
* @attention
*
* ʵ<EFBFBD><EFBFBD>ƽ̨:Ұ<EFBFBD><EFBFBD>  STM32 H750 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>  
* <EFBFBD><EFBFBD>̳    :http://www.chuxue123.com
* <EFBFBD>Ա<EFBFBD>    :http://firestm32.taobao.com
*
******************************************************************************
*/
#include <stdio.h>
#include <string.h>
#include "./usart/bsp_debug_usart.h"
#include "./wm8978/bsp_wm8978.h"
#include "ff.h" 
#include "./mp3Player/mp3Player.h"
#include "mp3dec.h"
#include "./sai/bsp_sai.h" 
/* <20>Ƽ<EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD>¸<EFBFBD>ʽmp3<70>ļ<EFBFBD><C4BC><EFBFBD>
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʣ<EFBFBD>44100Hz
 * <EFBFBD><EFBFBD>  <EFBFBD><EFBFBD><EFBFBD><EFBFBD>2
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʣ<EFBFBD>320kbps
 */

/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD><C6B5><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>СΪ2304*16/8<>ֽ<EFBFBD>(16ΪPCM<43><4D><EFBFBD><EFBFBD>Ϊ16λ)<29><>
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƕ<EFBFBD><EFBFBD><EFBFBD>MP3BUFFER_SIZEΪ2304<EFBFBD><EFBFBD>ʵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ΪMP3BUFFER_SIZE*2<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>
 */
#define MP3BUFFER_SIZE  2304		
#define INPUTBUF_SIZE   3000	

static HMP3Decoder		Mp3Decoder;			/* mp3<70><33><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>	*/
static MP3FrameInfo		Mp3FrameInfo;		/* mP3֡<33><D6A1>Ϣ  */
static MP3_TYPE mp3player;         /* mp3<70><33><EFBFBD><EFBFBD><EFBFBD>豸 */
volatile uint8_t Isread=0;           /* DMA<4D><41><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɱ<EFBFBD>־ */
static uint8_t bufflag=0;          /* <20><><EFBFBD>ݻ<EFBFBD><DDBB><EFBFBD><EFBFBD><EFBFBD>ѡ<EFBFBD><D1A1><EFBFBD><EFBFBD>־ */

uint32_t led_delay=0;

uint8_t inputbuf[INPUTBUF_SIZE]={0};        /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>뻺<EFBFBD><EBBBBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1940<34>ֽ<EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>MP3֡<33><D6A1>С  */
__attribute__((at(0x30000000))) short outbuffer[2][MP3BUFFER_SIZE];  /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2>I2S<32><53><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD>ʵ<EFBFBD><CAB5>ռ<EFBFBD><D5BC><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD><EFBFBD>RECBUFFER_SIZE*2 */

FIL file;											/* file objects */
FRESULT result; 
UINT bw;            					/* File R/W count */


/**
  * @brief   MP3<EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD>Ƶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  * @param  <EFBFBD><EFBFBD>
  * @retval <EFBFBD><EFBFBD>
  */
int times = 0;
void mp3PlayerDemo(const char *mp3file)
{
	uint8_t *read_ptr=inputbuf;
	uint32_t frames=0;
	int err=0, i=0, outputSamps=0;	
	int	read_offset = 0;				/* <20><>ƫ<EFBFBD><C6AB>ָ<EFBFBD><D6B8> */
	int	bytes_left = 0;					/* ʣ<><CAA3><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD> */	
	
	mp3player.ucFreq = SAI_AUDIOFREQ_DEFAULT;
	mp3player.ucStatus = STA_IDLE;
	mp3player.ucVolume = 40;
	
	result=f_open(&file,mp3file,FA_READ);
	if(result!=FR_OK)
	{
		printf("Open mp3file :%s fail!!!->%d\r\n",mp3file,result);
		result = f_close (&file);
		return;	/* ֹͣ<CDA3><D6B9><EFBFBD><EFBFBD> */
	}
	printf("<EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD> -> %s\n",mp3file);
	
	//<2F><>ʼ<EFBFBD><CABC>MP3<50><33><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	Mp3Decoder = MP3InitDecoder();	
	if(Mp3Decoder==0)
	{
		printf("<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>helix<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸\n");
		return;	/* ֹͣ<CDA3><D6B9><EFBFBD><EFBFBD> */
	}
	printf("<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>...\n");
	
	Delay_ms(10);	/* <20>ӳ<EFBFBD>һ<EFBFBD><D2BB>ʱ<EFBFBD>䣬<EFBFBD>ȴ<EFBFBD>I2S<32>жϽ<D0B6><CFBD><EFBFBD> */
	wm8978_Reset();		/* <20><>λWM8978<37><38><EFBFBD><EFBFBD>λ״̬ */
	/* <20><><EFBFBD><EFBFBD>WM8978оƬ<D0BE><C6AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ΪDAC<41><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD> */
	wm8978_CfgAudioPath(DAC_ON, EAR_LEFT_ON | EAR_RIGHT_ON);

	/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD><EFBFBD> */
	wm8978_SetOUT1Volume(mp3player.ucVolume);

	/* <20><><EFBFBD><EFBFBD>WM8978<37><38>Ƶ<EFBFBD>ӿ<EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD>׼I2S<32>ӿڣ<D3BF>16bit */
	wm8978_CfgAudioIF(SAI_I2S_STANDARD, 16);
	
	/*  <20><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>I2S  */
  SAI_Play_Stop();
	SAI_GPIO_Config();
//	SAIxA_Tx_Config(SAI_I2S_STANDARD,SAI_PROTOCOL_DATASIZE_16BIT,mp3player.ucFreq);	
//	SAIA_TX_DMA_Init();	
	
	bufflag=0;
	Isread=0;
	
	mp3player.ucStatus = STA_PLAYING;		/* <20><><EFBFBD><EFBFBD>״̬ */
  result=f_read(&file,inputbuf,INPUTBUF_SIZE,&bw);
	if(result!=FR_OK)
	{
		printf("<EFBFBD><EFBFBD>ȡ%sʧ<73><CAA7> -> %d\r\n",mp3file,result);
		MP3FreeDecoder(Mp3Decoder);
		return;
	}
	read_ptr=inputbuf;
	bytes_left=bw;
	/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѭ<EFBFBD><D1AD><EFBFBD><EFBFBD> */
	while(mp3player.ucStatus == STA_PLAYING)
	{
		read_offset = MP3FindSyncWord(read_ptr, bytes_left);	//Ѱ<><D1B0>֡ͬ<D6A1><CDAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ص<EFBFBD>һ<EFBFBD><D2BB>ͬ<EFBFBD><CDAC><EFBFBD>ֵ<EFBFBD>λ<EFBFBD><CEBB>
		if(read_offset < 0)										//û<><C3BB><EFBFBD>ҵ<EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD><EFBFBD>
		{
			result=f_read(&file,inputbuf,INPUTBUF_SIZE,&bw);
			if(result!=FR_OK)
			{
				printf("<EFBFBD><EFBFBD>ȡ%sʧ<73><CAA7> -> %d\r\n",mp3file,result);
				break;
			}
			read_ptr=inputbuf;
			bytes_left=bw;
			continue;		//<2F><><EFBFBD><EFBFBD>ѭ<EFBFBD><D1AD>2<EFBFBD><32><EFBFBD>ص<EFBFBD>ѭ<EFBFBD><D1AD>1	
		}
		read_ptr += read_offset;				//ƫ<><C6AB><EFBFBD><EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD>ֵ<EFBFBD>λ<EFBFBD><CEBB>
		bytes_left -= read_offset;				//ͬ<><CDAC><EFBFBD><EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD>С	
		if(bytes_left < 1024)							//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		{
			/* ע<><D7A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ط<EFBFBD><D8B7><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD>õ<EFBFBD><C3B5><EFBFBD>DMA<4D><41>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>Ҫ4<D2AA>ֽڶ<D6BD><DAB6><EFBFBD>  */
			i=(uint32_t)(bytes_left)&3;			//<2F>ж϶<D0B6><CFB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>
			if(i) i=4-i;						//<2F><>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>
			memcpy(inputbuf+i, read_ptr, bytes_left);	//<2F>Ӷ<EFBFBD><D3B6><EFBFBD>λ<EFBFBD>ÿ<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>
			read_ptr = inputbuf+i;										//ָ<><D6B8><EFBFBD><EFBFBD><EFBFBD>ݶ<EFBFBD><DDB6><EFBFBD>λ<EFBFBD><CEBB>
			result = f_read(&file, inputbuf+bytes_left+i, INPUTBUF_SIZE-bytes_left-i, &bw);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
			if(result!=FR_OK)
			{
				printf("<EFBFBD><EFBFBD>ȡ%sʧ<73><CAA7> -> %d\r\n",mp3file,result);
				break;
			}
			bytes_left += bw;		//<2F><>Ч<EFBFBD><D0A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С
		}
		err = MP3Decode(Mp3Decoder, &read_ptr, &bytes_left, outbuffer[bufflag], 0);	//bufflag<61><67>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>mp3<70><33><EFBFBD><EFBFBD><EFBFBD>ṹ<EFBFBD>塢<EFBFBD><E5A1A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD>롢<EFBFBD><EBA1A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD>롢<EFBFBD><EBA1A2><EFBFBD>ݸ<EFBFBD>ʽ
		frames++;	
		if (err != ERR_MP3_NONE)	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		{
			switch (err)
			{
				case ERR_MP3_INDATA_UNDERFLOW:
					printf("ERR_MP3_INDATA_UNDERFLOW\r\n");
					result = f_read(&file, inputbuf, INPUTBUF_SIZE, &bw);
					read_ptr = inputbuf;
					bytes_left = bw;
					break;		
				case ERR_MP3_MAINDATA_UNDERFLOW:
					/* do nothing - next call to decode will provide more mainData */
					printf("ERR_MP3_MAINDATA_UNDERFLOW\r\n");
					break;		
				default:
					printf("UNKNOWN ERROR:%d\r\n", err);		
					// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֡
					if (bytes_left > 0)
					{
						bytes_left --;
						read_ptr ++;
					}	
					break;
			}
			Isread=1;
		}
		else		//<2F><><EFBFBD><EFBFBD><EFBFBD>޴<EFBFBD><DEB4><EFBFBD><EFBFBD><EFBFBD>׼<EFBFBD><D7BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PCM
		{
			MP3GetLastFrameInfo(Mp3Decoder, &Mp3FrameInfo);		//<2F><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ				
			/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>DAC */
			outputSamps = Mp3FrameInfo.outputSamps;							//PCM<43><4D><EFBFBD>ݸ<EFBFBD><DDB8><EFBFBD>
			if (outputSamps > 0)
			{
				if (Mp3FrameInfo.nChans == 1)	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
				{
					//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>һ<EFBFBD>ݵ<EFBFBD><DDB5><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
					for (i = outputSamps - 1; i >= 0; i--)
					{
						outbuffer[bufflag][i * 2] = outbuffer[bufflag][i];
						outbuffer[bufflag][i * 2 + 1] = outbuffer[bufflag][i];
					}
					outputSamps *= 2;
				}//if (Mp3FrameInfo.nChans == 1)	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
			}//if (outputSamps > 0)
			
			/* <20><><EFBFBD>ݽ<EFBFBD><DDBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD>ò<EFBFBD><C3B2><EFBFBD><EFBFBD><EFBFBD> */
			if (Mp3FrameInfo.samprate != mp3player.ucFreq)	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
			{
				mp3player.ucFreq = Mp3FrameInfo.samprate;
				
				printf(" \r\n Bitrate       %dKbps", Mp3FrameInfo.bitrate/1000);
				printf(" \r\n Samprate      %dHz", mp3player.ucFreq);
				printf(" \r\n BitsPerSample %db", Mp3FrameInfo.bitsPerSample);
				printf(" \r\n nChans        %d", Mp3FrameInfo.nChans);
				printf(" \r\n Layer         %d", Mp3FrameInfo.layer);
				printf(" \r\n Version       %d", Mp3FrameInfo.version);
				printf(" \r\n OutputSamps   %d", Mp3FrameInfo.outputSamps);
				printf("\r\n");
				if(mp3player.ucFreq >= SAI_AUDIOFREQ_DEFAULT)	//I2S_AudioFreq_Default = 2<><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֡<EFBFBD><D6A1>ÿ<EFBFBD>ζ<EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
				{
          
					SAIxA_Tx_Config(SAI_I2S_STANDARD,SAI_PROTOCOL_DATASIZE_16BIT,mp3player.ucFreq);						//<2F><><EFBFBD>ݲ<EFBFBD><DDB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸<EFBFBD>iis<69><73><EFBFBD><EFBFBD>
          SAIA_TX_DMA_Init((uint32_t)(&outbuffer[0]),(uint32_t)&outbuffer[1],outputSamps);
				}

				SAI_Play_Start();
			}
		}//else <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		
		if(file.fptr==file.fsize) 		//mp3<70>ļ<EFBFBD><C4BC><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD>ɣ<EFBFBD><C9A3>˳<EFBFBD>
		{
			printf("END\r\n");
			break;
		}	

		while(Isread==0)
		{
			led_delay++;
			if(led_delay==0xffffff)
			{
				led_delay=0;
//				LED4_TOGGLE;
			}
			//Input_scan();		//<2F>ȴ<EFBFBD>DMA<4D><41><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɣ<EFBFBD><C9A3>˼<EFBFBD><CBBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>а<EFBFBD><D0B0><EFBFBD>ɨ<EFBFBD>輰<EFBFBD><E8BCB0><EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD>
		}
		Isread=0;
	}
	SAI_Play_Stop();
	mp3player.ucStatus=STA_IDLE;
	MP3FreeDecoder(Mp3Decoder);
	f_close(&file);	
}

/* DMA<4D><41><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϻص<CFBB><D8B5><EFBFBD><EFBFBD><EFBFBD> */
/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɣ<EFBFBD><C9A3><EFBFBD>Ҫ<EFBFBD>л<EFBFBD><D0BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>»<EFBFBD><C2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݲ<EFBFBD><DDB2><EFBFBD> 
   ͬʱ<EFBFBD><EFBFBD>ȡWAV<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>䵽<EFBFBD>Ѳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>  */
void MusicPlayer_SAI_DMA_TX_Callback(void)
{

  if(DMA_Instance->CR&(1<<19)) //<2F><>ǰʹ<C7B0><CAB9>Memory1<79><31><EFBFBD><EFBFBD>
  {
    bufflag=0;                       //<2F><><EFBFBD>Խ<EFBFBD><D4BD><EFBFBD><EFBFBD>ݶ<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>0
  }
  else                               //<2F><>ǰʹ<C7B0><CAB9>Memory0<79><30><EFBFBD><EFBFBD>
  {
    bufflag=1;                       //<2F><><EFBFBD>Խ<EFBFBD><D4BD><EFBFBD><EFBFBD>ݶ<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1
  }
  Isread=1;                          // DMA<4D><41><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɱ<EFBFBD>־
	
}

/***************************** (END OF FILE) *********************************/