204 lines
6.5 KiB
C
204 lines
6.5 KiB
C
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/*
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******************************************************************************
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* @file driver_mp3_dec.c
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* @author FreqChip Firmware Team
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* @version V1.0.0
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* @date 2021
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* @brief MP3 decoder module driver.
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* This file provides firmware functions to manage the
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* MP3 DECODEER peripheral
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2021 FreqChip.
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* All rights reserved.
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******************************************************************************
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*/
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#include "fr30xx.h"
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/******************************************************************************
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* @fn mp3_decoder_init
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*
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* @brief Initialize the mp3 decoder according to the specified parameters
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* in the MP3_DEC_HandleTypeDef
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*
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* @param hmp3dec : MP3_DEC_HandleTypeDef structure that contains the
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* configuration information for MP3DEC module.
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* pcm_buff : mp3 decoder paddr
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* pcm_buf_size : pcm buffer size
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*/
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void mp3_dec_init(MP3_DEC_HandleTypeDef *hmp3dec, uint32_t *pcm_buff, uint32_t pcm_buf_size)
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{
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__MP3D_SOFTRST();//softreset
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__MP3D_PCM_FIFO_RESET();
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__MP3D_ISSUE_NEW_FILE();
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MP3D->MP3D_CTRL.Bits.DAI_EN = hmp3dec->mp3dec_ctrl_Init.Bits.DAI_EN;
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__MP3D_OPERA_ENABLE();
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MP3D->MP3D_CTRL.Bits.ISR_EN = hmp3dec->mp3dec_ctrl_Init.Bits.ISR_EN;
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MP3D->MP3D_PADDR = (uint32_t)pcm_buff;
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MP3D->MP3D_PSIZE.Word = pcm_buf_size;
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memset(pcm_buff,0,pcm_buf_size);
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}
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/******************************************************************************
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* @fn mp3_decoder_start
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*
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* @brief Start the mp3 decoder
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*
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* @param src_buff : src data pointer
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* src_size : src data size
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*/
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static void mp3_dec_start(uint8_t *src_buff, uint32_t src_size)
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{
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MP3D->MP3D_SADDR = (uint32_t)src_buff;
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MP3D->MP3D_SSIZE.Word = src_size;
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MP3D->MP3D_INTSTA.Bits.SOURCE_CMPLETION_ISR = 1;
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MP3D->MP3D_CTRL.Bits.OPERA_START = 1;
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}
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/******************************************************************************
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* @fn mp3_decoder_stop
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*
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* @brief Stop the mp3 decoder
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*
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* @param void
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*/
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static void mp3d_stop(void)
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{
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__MP3D_PCM_FIFO_RESET();
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__MP3D_ISSUE_NEW_FILE();
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}
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/******************************************************************************
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* @fn mp3_clear_isr
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*
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* @brief Clear the mp3 decoder isr flag
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*
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* @param isr : enum_mp3d_isr_t contains info
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*/
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static void mp3d_clear_isr(enum_mp3d_isr_t isr)
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{
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MP3D->MP3D_INTSTA.Word = (1 << isr);
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}
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/******************************************************************************
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* @fn mp3_dec_playdata
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*
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* @brief Mp3 decoder play data
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*
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* @param hmp3dec : mp3 decoder handler
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* fp_Data : the data which is needed to decoder
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* fu32_Size : the decoded data's size
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*/
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void mp3_dec_playdata(MP3_DEC_HandleTypeDef *hmp3dec, uint8_t *fp_Data, uint32_t fu32_Size)
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{
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uint32_t length = 0;
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uint32_t CurrentIndex = 0;
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uint32_t DataSize = fu32_Size;
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while(DataSize != 0)
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{
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length = fu32_Size > 512 ? 512 : fu32_Size;
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mp3_dec_start((uint8_t *)&fp_Data[CurrentIndex], length);
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DataSize -= length;
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while(1)
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{
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if(__MP3D_CHECK_NEED_SEC())
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{
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mp3d_clear_isr(SOURCE_COMPLETE_ISR);
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CurrentIndex += length;
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break;
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}
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}
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}
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mp3d_stop();
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}
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/******************************************************************************
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* @fn mp3_dec_playdata_IT
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*
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* @brief Mp3 decoder play data with isr
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*
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* @param hmp3dec : mp3 decoder handler
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* fp_Data : the data which is needed to decoder
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* fu32_Size : the decoded data's size
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*/
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void mp3_dec_playdata_IT(MP3_DEC_HandleTypeDef *hmp3dec, uint8_t *fp_Data, uint32_t fu32_Size)
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{
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__MP3D_COMPLETE_ISR_ENABLE();
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hmp3dec->MP3Enced_Data = fp_Data;
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hmp3dec->MP3Enced_Index = 0;
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hmp3dec->LeftLen = fu32_Size;
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hmp3dec->FrameLen = hmp3dec->LeftLen > 512 ? 512 : hmp3dec->LeftLen;
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mp3_dec_start((uint8_t *)&hmp3dec->MP3Enced_Data[hmp3dec->MP3Enced_Index], hmp3dec->FrameLen);
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hmp3dec->MP3Enced_Index += hmp3dec->FrameLen;
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hmp3dec->LeftLen -= hmp3dec->FrameLen;
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}
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/******************************************************************************
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* @fn mp3d_get_stream_info
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*
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* @brief Mp3 decoder get the decoded frame info
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*
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* @param info : struct_MP3D_stream_info_t structure contains
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*/
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void mp3d_get_stream_info(struct_MP3D_stream_info_t *info)
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{
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info->audio_ver = MP3D->MP3D_INFO.Bits.MP3_STREAM_AUDIO_VER;
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info->audio_emphasis = MP3D->MP3D_INFO.Bits.MP3_STREAM_AUDIO_EMPHASIS;
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info->audio_mode = MP3D->MP3D_INFO.Bits.MP3_STREAM_AUDIO_MODE;
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info->bit_rate = MP3D->MP3D_INFO.Bits.MP3_STREAM_BIT_RATE;
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info->copyright = MP3D->MP3D_INFO.Bits.MP3_STREAM_COPYRIGHT;
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info->error_protection = MP3D->MP3D_INFO.Bits.MP3_STREAM_ERROR_PROTECT;
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info->frame_locked = MP3D->MP3D_INFO.Bits.MP3_FRAME_LOCKED;
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info->main_done = MP3D->MP3D_INFO.Bits.MP3_MAIN_DONE;
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info->main_exhaust = MP3D->MP3D_INFO.Bits.MP3_MAIN_EXHAUST;
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info->mode_extension = MP3D->MP3D_INFO.Bits.MP3_STREAM_AUDIO_MODE_EXTEN;
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info->original = MP3D->MP3D_INFO.Bits.MP3_STREAM_ORIGINAL;
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info->sample_rate = MP3D->MP3D_INFO.Bits.MP3_STREAM_SAMPLE_RATE;
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}
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/******************************************************************************
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* @fn mp3d_check_dec_failed
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*
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* @brief check whether the mp3dec is failed or successful
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*
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* @param void
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*/
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int mp3d_check_dec_failed(void)
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{
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if((MP3D->MP3D_INTSTA.Bits.MP3_FRAME_LOCKED_ISR == 1) ||
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(MP3D->MP3D_INFO.Bits.MP3_FRAME_LOCKED == 0))
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{
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MP3D->MP3D_INTSTA.Word = (1 << MP3_FRAME_LOCKED_ISR);
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return 1;
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}
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return 0;
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}
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/******************************************************************************
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* @fn mp3dec_IRQHandler
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*
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* @brief mp3 decoder handle function in mo3 dec isr
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*
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* @param hmp3dec : MP3 decoder handle
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*/
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void mp3dec_IRQHandler(MP3_DEC_HandleTypeDef *hmp3dec)
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{
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if(__MP3D_SRC_COMPLETE_ISR_IS_SET())
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{
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if(hmp3dec->LeftLen != 0)
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{
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hmp3dec->FrameLen = hmp3dec->LeftLen > 512 ? 512 : hmp3dec->LeftLen;
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mp3_dec_start((uint8_t *)&hmp3dec->MP3Enced_Data[hmp3dec->MP3Enced_Index], hmp3dec->FrameLen);
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hmp3dec->MP3Enced_Index += hmp3dec->FrameLen;
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hmp3dec->LeftLen -= hmp3dec->FrameLen;
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}
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else
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{
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__MP3D_COMPLETE_ISR_DISABLE();
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mp3d_stop();
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}
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}
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}
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