//?AddPcmFileHeader.cpp?:?定義控制臺應用程序的入口點。
//

#include?“stdafx.h“
#include?
#include?
#include?


//pcm文件的聲道數
#define?PCM_CHANNEL_NUM????????????2
//pcm文件的采樣率
#define?PCM_SAMPLE_RATE????????????44100
//?每次采樣占用的位數?8/16/32等
#define?PCM_SAMPLE_BITS????????????16

/*
?*?wav?文件格式
?------------------------------------------------
?|?????????????RIFF?WAVE?Chunk??????????????????|
?|?????????????ID??=?‘RIFF‘?????????????????????|
?|?????????????RiffType?=?‘WAVE‘????????????????|
?------------------------------------------------
?|?????????????Format?Chunk?????????????????????|
?|?????????????ID?=?‘fmt?‘??????????????????????|
?------------------------------------------------
?|?????????????Fact?Chunk（optional）?????????????|
?|?????????????ID?=?‘fact‘??????????????????????|???（此Chunk可選）
?------------------------------------------------
?|?????????????Data?Chunk???????????????????????|
?|?????????????ID?=?‘data‘??????????????????????|
?------------------------------------------------

?*/


//wav頭的結構如下所示：
typedef???struct??
{
	char?????fccID[4];????
	unsigned???long??????dwSize;????
	char?????fccType[4];???
}HEADER;?//RIFF?WAVE?Chunk

typedef???struct??
{
	char????fccID[4];?????
	unsigned???long??dwSize;???????
	unsigned???short????wFormatTag;????
	unsigned???short????wChannels;????
	unsigned???long?????dwSamplesPerSec;??
	unsigned???long?????dwAvgBytesPerSec;??
	unsigned???short????wBlockAlign;???
	unsigned???short????uiBitsPerSample;??
}FMT;?//Format?Chunk

typedef???struct?
{
	char????fccID[4];????
	unsigned???long?????dwSize;?????
}DATA;?//Data?Chunk
//以上是wav頭文件

int?_tmain（int?argc?_TCHAR*?argv[]）
{
	
	//以下是為了建立.wav頭而準備的變量
	HEADER??pcmHEADER;
	FMT??pcmFMT;
	DATA?pcmDATA;

	unsigned???short???m_pcmData;?????//讀入.pcm和寫入文件.wav數據變量
	FILE???*fp*fpCpy;


	if（argc!=2）
	{
		printf（“?Usage:?%s??PCM_FILE\n“）;
		return?1;

	}

	if（（fp=fopen（argv[1]???“rb?“））???==???NULL）??//讀取文件
	{
		printf（?“打開pcm文件出錯?\n“）;??????
		exit（0）;
	}

	if（（fpCpy=fopen（“output_pcm.wav“???“wb+“））???==???NULL）??//為轉換建立一個新文件
	{
		fclose（fp）;
		printf（?“創建wav文件出錯\n?“）;??????
		exit（0）;
	}???


	//以下是創建wav頭的HEADER;但.dwsize未定，因為不知道Data的長度。
	strncpy（pcmHEADER.fccID?“RIFF“4）;???????????
	//pcmHEADER.dwsize==?
	strncpy（pcmHEADER.fccType?“WAVE“?4）;
	fseek（fpCpysizeof（HEADER）SEEK_CUR）;?//跳過HEADER的長度，以便下面繼續寫入wav文件的數據;
	//以上是創建wav頭的HEADER;

	if（ferror（fpCpy））
	{??
		printf（?“error!\n?“）;??????????????
	}

	//以下是創建wav頭的FMT;
	strncpy（pcmFMT.fccID?“fmt?“4）;
	pcmFMT.dwSize=16;
	pcmFMT.wFormatTag=1;

	pcmFMT.wChannels=PCM_CHANNEL_NUM;??//幾聲道此處為2聲音左右立體聲
	pcmFMT.dwSamplesPerSec=PCM_SAMPLE_RATE;?//采樣率44.1KHz

	//每個采樣需要的bit數?
	pcmFMT.uiBitsPerSample=PCM_SAMPLE_BITS;?

	//?每秒所需字節數?（采樣率*聲道數*每個采樣所需的BIT?/8?）
	pcmFMT.dwAvgBytesPerSec=pcmFMT.dwSamplesPerSec?*?pcmFMT.wChannels?*?pcmFMT.uiBitsPerSample?/?8;

	//數據塊對齊單位（每個采樣需要的字節數:?采樣位*聲道數/8）
	pcmFMT.wB

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????4401??2014-04-23?11:23??給PCM數據流加WAV格式文件頭\AddPcmFileHeader\AddPcmFileHeader.cpp

?????文件???????4178??2014-04-23?10:04??給PCM數據流加WAV格式文件頭\AddPcmFileHeader\AddPcmFileHeader.vcproj

?????文件???????1004??2014-04-23?09:23??給PCM數據流加WAV格式文件頭\AddPcmFileHeader\ReadMe.txt

?????文件????????221??2014-04-23?09:23??給PCM數據流加WAV格式文件頭\AddPcmFileHeader\stdafx.cpp

?????文件????????378??2014-04-23?09:23??給PCM數據流加WAV格式文件頭\AddPcmFileHeader\stdafx.h

?????文件????????913??2014-04-23?09:23??給PCM數據流加WAV格式文件頭\AddPcmFileHeader.sln

????..A..H.?????10752??2014-04-23?15:45??給PCM數據流加WAV格式文件頭\AddPcmFileHeader.suo

?????目錄??????????0??2014-04-24?17:09??給PCM數據流加WAV格式文件頭\AddPcmFileHeader

?????目錄??????????0??2014-04-24?17:09??給PCM數據流加WAV格式文件頭

-----------?---------??----------?-----??----

????????????????21847????????????????????9