/*
* Copyright (c) 2019-2025 Allwinner Technology Co., Ltd. ALL rights reserved.
*
* Allwinner is a trademark of Allwinner Technology Co.,Ltd., registered in
* the the people's Republic of China and other countries.
* All Allwinner Technology Co.,Ltd. trademarks are used with permission.
*
* DISCLAIMER
* THIRD PARTY LICENCES MAY BE REQUIRED TO IMPLEMENT THE SOLUTION/PRODUCT.
* IF YOU NEED TO INTEGRATE THIRD PARTY’S TECHNOLOGY (SONY, DTS, DOLBY, AVS OR MPEGLA, ETC.)
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* ALLWINNER SHALL HAVE NO WARRANTY, INDEMNITY OR OTHER OBLIGATIONS WITH RESPECT TO MATTERS
* COVERED UNDER ANY REQUIRED THIRD PARTY LICENSE.
* YOU ARE SOLELY RESPONSIBLE FOR YOUR USAGE OF THIRD PARTY’S TECHNOLOGY.
*
*
* THIS SOFTWARE IS PROVIDED BY ALLWINNER"AS IS" AND TO THE MAXIMUM EXTENT
* PERMITTED BY LAW, ALLWINNER EXPRESSLY DISCLAIMS ALL WARRANTIES OF ANY KIND,
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* THE TITLE, NON-INFRINGEMENT, ACCURACY, CONDITION, COMPLETENESS, PERFORMANCE
* OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS, OR BUSINESS INTERRUPTION)
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*/
#ifndef __WAV_PARSER_H
#define __WAV_PARSER_H

#include <aw-alsa-lib/pcm.h>

#ifdef __cplusplus

extern "C" {
#endif

/* define default endianness */
#ifndef __LITTLE_ENDIAN
#define __LITTLE_ENDIAN    3456
#endif

#ifndef __BIG_ENDIAN
#define __BIG_ENDIAN    6543
#endif

#ifndef __BYTE_ORDER
#define __BYTE_ORDER    __LITTLE_ENDIAN
#endif

#if __BYTE_ORDER == __LITTLE_ENDIAN
#define COMPOSE_ID(a,b,c,d)     ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
#define LE_SHORT(v)             (v)
#define LE_INT(v)               (v)
#define BE_SHORT(v)             bswap_16(v)
#define BE_INT(v)               bswap_32(v)
#elif __BYTE_ORDER == __BIG_ENDIAN
#define COMPOSE_ID(a,b,c,d)     ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
#define LE_SHORT(v)             bswap_16(v)
#define LE_INT(v)               bswap_32(v)
#define BE_SHORT(v)             (v)
#define BE_INT(v)               (v)
#else
#error "Wrong endian"
#endif

#define WAV_RIFF                COMPOSE_ID('R','I','F','F')
#define WAV_RIFX                COMPOSE_ID('R','I','F','X')
#define WAV_WAVE                COMPOSE_ID('W','A','V','E')
#define WAV_FMT                 COMPOSE_ID('f','m','t',' ')
#define WAV_DATA                COMPOSE_ID('d','a','t','a')

#define WAV_FMT_PCM             0x0001
#define WAV_FMT_IEEE_FLOAT      0x0003


typedef struct {
        unsigned int    riffType;               //4byte,资源交换文件标志:RIFF
        unsigned int    riffSize;               //4byte,从下个地址到文件结尾的总字节数
        unsigned int    waveType;               //4byte,wav文件标志:WAVE
        unsigned int    formatType;             //4byte,波形文件标志:FMT(最后一位空格符)最后一位空格符
        unsigned int    formatSize;             //4byte,音频属性(compressionCode,numChannels,sampleRate,bytesPerSecond,blockAlign,bitsPerSample)所占字节数
        unsigned short  compressionCode;        //2byte,格式种类(1-线性pcm-WAVE_FORMAT_PCM,WAVEFORMAT_ADPCM)
        unsigned short  numChannels;            //2byte,通道数
        unsigned int    sampleRate;             //4byte,采样率
        unsigned int    bytesPerSecond;         //4byte,传输速率
        unsigned short  blockAlign;             //2byte,数据块的对齐，即DATA数据块长度
        unsigned short  bitsPerSample;          //2byte,采样精度-PCM位宽
        unsigned int    dataType;               //4byte,数据标志:data
        unsigned int    dataSize;               //4byte,从下个地址到文件结尾的总字节数，即除了wav header以外的pcm data length
} wav_header_t;

typedef struct {
    unsigned int rate;
    snd_pcm_format_t format;
    unsigned int channels;
} wav_hw_params_t;

int check_wav_header(wav_header_t *header, wav_hw_params_t *hwparams);
void create_wav(wav_header_t *header, unsigned int format, unsigned int rate, unsigned int channels);
void resize_wav(wav_header_t *header, unsigned int size);

#ifdef __cplusplus
};  // extern "C"
#endif
#endif