wav2pcm

海漩渦 2016-06-17

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#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <errno.h>

#define MAX_LEN 1024*500

#define WAV_HEAD_LEN 44

int main(int argc, char *argv[])
{

   if(3 != argc)
   {
       printf("Please input 3 param\n");
       return -1;
   }

   char input_name[40];
   char output_name[40];

   int input_fd = -1;
   int output_fd = -1;
   int len = -1;

   char *error_buf = NULL;
   char *buf = NULL;

   //------------------------------------------------------------
   // 初始化一些東西
   buf = (char *)malloc(MAX_LEN);
   if(NULL == buf)
   {
       printf("malloc error\n");
       return -1;
   }

   input_fd = open(argv[1], O_RDWR);
   if(input_fd < 0)
   {
       printf("open error\n");
       return -1;
   }
   printf("open [%s] success\n", argv[1]);


   output_fd = open(argv[2], O_RDWR|O_CREAT);
   if(output_fd < 0)
   {
       printf("open error\n");
       return -1;
   }
   printf("open [%s] success\n", argv[2]);
   //-----------------------------------------------------------------

   //------------------------------------------------------
   // 轉(zhuǎn)換wav 為 pcm, 實際上只是跳過wav的頭，后面即是pcm數(shù)據(jù)
   lseek(input_fd, WAV_HEAD_LEN, SEEK_SET);
   while((len = read(input_fd, buf, MAX_LEN)) > 0 )
   {
       write(output_fd, buf, len);
   }
   //------------------------------------------------------

   printf("wav2pcm complete\n");

   close(input_fd);
   close(output_fd);

   return 0;
}