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/*
* 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.)
* IN ALLWINNERS’SDK OR PRODUCTS, YOU SHALL BE SOLELY RESPONSIBLE TO OBTAIN
* ALL APPROPRIATELY REQUIRED THIRD PARTY LICENCES.
* 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,
* WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING WITHOUT LIMITATION REGARDING
* THE TITLE, NON-INFRINGEMENT, ACCURACY, CONDITION, COMPLETENESS, PERFORMANCE
* OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
* IN NO EVENT SHALL ALLWINNER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* 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)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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
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