高分求教,c语言waveframe 录音保存问题！

[朱韦刚]

#include <windows.h>
#include <mmsystem.h>
#include <stdio.h>

#pragma comment(lib, "winmm.lib")   

#define BUFFER_SIZE (44100*16*2/8)    // 录制声音长度  
#define FRAGMENT_SIZE 1024              // 缓存区大小  
#define FRAGMENT_NUM 4                  // 缓存区个数  

static unsigned char buffer[BUFFER_SIZE] = {0};  
static int buf_count = 0;  

// 函数定义   
void CALLBACK waveInProc(HWAVEIN hwi, UINT uMsg,DWORD_PTR dwInstance,DWORD_PTR dwParam1,DWORD_PTR dwParam2 );  

int main()  
{  
	/* 录音 */ 

	HWAVEIN hWaveIn;  
	WAVEFORMATEX wavform; 
	int i = 0;
	int nReturn = 0;
	WAVEINCAPS wic;  
	static WAVEHDR wh[FRAGMENT_NUM];  

	// Device   
	nReturn = waveInGetNumDevs();    //获取系统现在的设备数目
	printf("查询到设备数目：%d\n", nReturn);  
	for (i= 0; i<= nReturn; i++)  
	{  
		WAVEINCAPS wic_c;  
		waveInGetDevCaps(i, &wic_c, sizeof(WAVEINCAPS));  
		printf("查询  到 设备： %d\t设备名：   %s\n", i, wic_c.szPname);  
	}  

	// open    
	wavform.wFormatTag = WAVE_FORMAT_PCM;  
	wavform.nChannels = 2;                   //声道 1： 单声道 2： 立体声
	wavform.nSamplesPerSec = 44100;          //采样率
	wavform.nAvgBytesPerSec = 44100*16*2/8;  
	wavform.nBlockAlign = 4;  
	wavform.wBitsPerSample = 16;  
	wavform.cbSize = 0;  

	waveInOpen(&hWaveIn, WAVE_MAPPER, &wavform, (DWORD_PTR)waveInProc, 0, CALLBACK_FUNCTION);  

	waveInGetDevCaps((UINT_PTR)hWaveIn, &wic, sizeof(WAVEINCAPS));  
	printf("打开的音频设备：%s\n", wic.szPname);  

	// 准备 buffer   
	for (i=0; i<FRAGMENT_NUM; i++)  
	{  
		wh[i].lpData = (char *)malloc(sizeof(char)* FRAGMENT_SIZE); 
		wh[i].dwBufferLength = FRAGMENT_SIZE;  
		wh[i].dwBytesRecorded = 0;  
		wh[i].dwUser = 0;  
		wh[i].dwFlags = 0;  
		wh[i].dwLoops = 1;  
		wh[i].lpNext = NULL;  
		wh[i].reserved = 0;  

		waveInPrepareHeader(hWaveIn, &wh[i], sizeof(WAVEHDR));  
		waveInAddBuffer(hWaveIn, &wh[i], sizeof(WAVEHDR));  
	}  

	// record   
	printf("Start to Record...\n");   

	while(1)
	{
		waveInStart(hWaveIn);
		printf("当前录音帧数：%d\n",++buf_count);
	}

	printf("Record Over!\n\n");  

	// clean   
	waveInStop(hWaveIn);  
	waveInReset(hWaveIn);  
	for (i =0; i<FRAGMENT_NUM; i++)  
	{  
		waveInUnprepareHeader(hWaveIn, &wh[i], sizeof(WAVEHDR));  
		free (wh[i].lpData);  
	}  
	waveInClose(hWaveIn);  
	return getchar();  
}  

// 录音回调函数   
void CALLBACK waveInProc(HWAVEIN hwi,UINT uMsg,DWORD_PTR dwInstance, DWORD_PTR dwParam1,DWORD_PTR dwParam2)  
{  
	WAVEHDR  *wavehdr = (WAVEHDR * )dwParam1;
	int buf_len  = 0;
	int result = 0;

	if (WIM_DATA == uMsg)  
	{  
		//录音设备返回数据时，触发该事件    
		if(!waveInUnprepareHeader(hwi, wavehdr,sizeof(WAVEHDR)))   
		{   //可以释放内存。有的情况虽然返回数据，但不能释放内存，    
			//如使用同一个WAVEHDR增加多个内存块时，会出现上述情况    
			memcpy(buffer, wavehdr->lpData , FRAGMENT_SIZE);//复制返回数据    
			buf_len = wavehdr->dwBytesRecorded;//记录录音数据长度    
			wavehdr->dwUser=0;//恢复设置FRAGMENT_SIZE
			wavehdr->dwBufferLength = FRAGMENT_SIZE;   
			wavehdr->dwFlags=0;     
			result = waveInPrepareHeader(hwi,wavehdr,sizeof(WAVEHDR));   
			result = waveInAddBuffer(hwi,wavehdr,sizeof(WAVEHDR));     
		}   
	}  
}  

高手指教 ：
1: 怎样循环录音？
2：怎样保存到文件？pcm 或wav的都行！

[rightorwrong]

你这样就是循环录音啊，当采集到指定长度的数据，waveInProc就调用了，你就可以写文件了啊
把这里的数据直接写文件就是pcm的了memcpy(buffer, wavehdr->lpData , FRAGMENT_SIZE);//复制返回数据
wav的directshow sample里有个wave类吧，直接调用，然后把数据写入就能达到要求

[朱韦刚]

高手指教下！！

[朱韦刚]

各位大哥帮帮忙吧，我弄了好几天了！

[朱韦刚]

我在网上找的都是消息响应的，用回调函数的很少，存储那不是很懂，格式方面，头什么的，希望高手指教！

[朱韦刚]

搞定了，http://download.csdn.net/detail/zhuweigangzwg/4258723

[qy06521235]

谢谢楼主最后一贴的分享，帮了我大忙了，谢谢！