132 lines
4.5 KiB
C
132 lines
4.5 KiB
C
/**
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* @file wav_play_form_sd_card.h
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* @brief
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*
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* Copyright (c) 2021 Bouffalolab team
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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*/
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#ifndef __MAV_PLAY_H__
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#define __MAV_PLAY_H__
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#include "hal_i2s.h"
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//WAV文件块定义
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/* RIFF (RIFF WAVE Chunk) */
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typedef struct __attribute__((packed)) {
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uint32_t chunk_id; /*chunk id:"RIFF",(0X46464952) */
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uint32_t chunk_size; /*file size -8 */
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uint32_t format; /* "WAVE" (0X45564157) */
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} chunk_riff_t;
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/* fmt (Format Chunk)*/
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typedef struct __attribute__((packed)) {
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uint32_t chunk_id; /* chunk id:"fmt",(0X20746D66) */
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uint32_t chunk_size; /* fmt size -8 = 20*/
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uint16_t audio_format; /* 音频格式;0X10,表示线性 PCM; 0X11 表示 IMA ADPCM */
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uint16_t num_of_channels; /* 通道数量;1,表示单声道;2,表示双声道*/
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uint32_t sample_rate; /* 采样率;0X1F40,表示 8Khz */
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uint32_t byte_rate; /* 字节速率 */
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uint16_t block_align; /*块对齐(字节)*/
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uint16_t bits_per_sample; /*单个采样数据大小;4 位 ADPCM,设置为 4*/
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} chunk_format_t;
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//fact (Fact Chunk)
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typedef struct __attribute__((packed)) {
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uint32_t chunk_id; //chunk id;这里固定为"fact",即 0X74636166;
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uint32_t chunk_size; //子集合大小(不包括 ID 和 Size);这里为:4.
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uint32_t data_fact_size; //数据转换为 PCM 格式后的大小
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} chunk_fact_t;
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//data (Data Chunk)
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typedef struct __attribute__((packed)) {
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uint32_t chunk_id; //chunk id;这里固定为"data",即 0X61746164
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uint32_t chunk_size; //子集合大小(不包括 ID 和 Size);文件大小-60.
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} chunk_data_t;
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//
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typedef enum {
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CHUNK_RIFF,
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CHUNK_FORMAT,
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CHUNK_FACT,
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CHUNK_DATA,
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} mav_chunk_t;
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//.wav information
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typedef struct
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{
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int chunk_riff_offset; //在数据里的位置偏移，-1表示没有此块
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chunk_riff_t chunk_riff;
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int chunk_format_offset;
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chunk_format_t chunk_format;
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int chunk_fact_offset;
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chunk_fact_t chunk_fact;
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int chunk_data_offset;
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chunk_data_t chunk_data;
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} wav_information_t;
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typedef enum {
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AUDIO_CMD_PLAY_START,
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AUDIO_CMD_PLAY_STOP,
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AUDIO_CMD_RECORD_START,
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AUDIO_CMD_RECORD_STOP,
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AUDIO_CMD_GET_VOLUME,
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AUDIO_CMD_SET_VOLUME,
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} AUDIO_CMD_t;
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/* 频率索引*/
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typedef enum {
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SAMPL_FREQ_8000 = 0,
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SAMPL_FREQ_16000 = 1,
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SAMPL_FREQ_44100 = 2,
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SAMPL_FREQ_48000 = 3,
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} sampl_freq_t;
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/* 录音设置参数 */
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typedef struct
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{
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uint16_t data_size;
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uint16_t channel_num;
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sampl_freq_t sampl_freq;
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} record_config_t;
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/* 播放控制块 */
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typedef struct audio_dev {
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uint8_t *buff[2];
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uint32_t buff_data_size[2]; //buff内数据长度
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uint32_t buff_size_max; //buff的大小
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uint8_t buff_using; //正在使用的buff
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uint8_t audio_state; //状态 0:就是不允许播放 1:暂停中,如果要播放,需要重新解析wav信息头 2:暂停中,可以接着播放(不用重新解析wav信息) 3:播放中,但在等待数据(数据不及时) 4:正常播放中，数据正常
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// 11:录音模式(数据堆积,未及时发送完,在等待上位机ACK) 12录音模式(正常,数据及时发送)
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uint8_t audio_type; //类型
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int (*audio_init)(struct audio_dev *audio_dev, uint8_t mode, uint8_t *buff); //初始化函数，播放需要传入wav文件头地址
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int (*audio_control)(struct audio_dev *audio_dev, AUDIO_CMD_t cmd, void *args);
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int (*audio_callback)(struct audio_dev *audio_dev); //中断回调函数，用来重新装载buff，
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struct device *device; //i2s的device，可以考虑换成指向其他外设
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wav_information_t *wav_information; //播放wav信息结构体
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record_config_t *record_config; //录音配置结构体
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} audio_dev_t;
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int isp_wav_play_register(audio_dev_t *audio_dev);
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#endif |