辛苦大家帮我看一个关于内存播放wav的问题

ga6840 2009-07-30 02:31:25

代码如下：







#include<stdio.h>

#include<stdlib.h>

#include<string.h>

#include<malloc.h>

#include <windows.h>



struct wav_head

{

    unsigned long wav_id;

    unsigned int wav_size;

    unsigned int type;

    unsigned int fmt_id;

    unsigned int fmt_size;

    unsigned short format_tag;

    unsigned short channels;

    unsigned int sample_per_sec;

    unsigned int avg_bytes_per_sec;

    unsigned short block_align;

    unsigned short bits_per_sample;

    //unsigned short attach_info;

    unsigned int data_id;

    unsigned int date_size;

};



int main()

{   

    char *pbuf;

    int i,len;

    FILE *fp;

    

    struct wav_head *test;

    test=(struct wav_head *)malloc(sizeof(struct wav_head));

	len=55552; 

    pbuf=(char *)malloc(55552);

    fp=fopen("test2.wav","w");



    test->wav_id=0x46464952;  //RIFF

    test->wav_size=len+44-8;    

    test->type=0x45564157;      //WAVE

    

    test->fmt_id=0x20746d66;  //fmt

    test->fmt_size=0x10;

    test->format_tag=0x1;

    test->channels=0x1;

    test->sample_per_sec=0x3e80;

    test->avg_bytes_per_sec=0x7d00;

    test->block_align=0x2;

    test->bits_per_sample=0x10;

         

    test->data_id=0x61746164;  //data

    test->date_size=len; 

    

    

    

    

    for(i=0;i<len;i++)

    {

        //pbuf[i]=rand()%256;

        pbuf[i]=i%256;

    }

    fwrite(test,sizeof(struct wav_head),1,fp);

    fwrite(pbuf,sizeof(char),len,fp);

	

    char* wavwav=new char[sizeof(struct wav_head)+55552];

    memcpy(wavwav  ,   (char*)test     ,sizeof(wav_head));

    memcpy(wavwav +  sizeof(wav_head)  ,(char*)pbuf,55552);



	sndPlaySound(NULL,SND_MEMORY|SND_ASYNC);//stop the sound if there is a sound

	sndPlaySound((const char *)&test,SND_MEMORY|SND_ASYNC);//return immediately

	



    free(pbuf);

    free(test);

    fclose(fp);

	

	while(1);

    return 0;

}

包含有：kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib comctl32.lib dxerr8.lib winmm.lib dsound.lib dxguid.lib

程序执行后生成的wav可以播放但

问题是：
我尝试想用sndPlaySound播放内存里的wav却没达到效果，没有任何声音播放，为什么？

谢谢各位！

...全文

113 3 打赏收藏转发到动态举报

写回复

用AI写文章

3 条回复

切换为时间正序

请发表友善的回复…

发表回复

ga6840 2009-07-30

打赏
举报

哎！！！！！！太傻啦
我试了试没声就没。。。
可惜100分
不过谢谢goodname

我发现自己写的就是tm难查出错

goodname 2009-07-30

打赏
举报

从你的程序来看似乎是
sndPlaySound((const char *)wavwav,SND_MEMORY|SND_ASYNC);
应该是wavwav
或者至少应该写
sndPlaySound((const char *)test,SND_MEMORY|SND_ASYNC);
无需取地址

lori227 2009-07-30

打赏
举报

播放内存里的需要

waveOutOpen 打开播放设备

waveOutPrepareHeader 为播放设备准备数据缓冲

waveOutWrite 播放

void CALLBACK RingWaveOutProc( HWAVEOUT hwo, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2)

播放声音的回调函数