用C语言能操作wav音频文件吗？

2008-06-15 08:46:13 280 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

C语言解析WAV音频文件转载：http://www.cnblogs.com/LexMoon/p/wave-c.html 1.C语言解析WAV音频文件代码地址:Github : https://github.com/CasterWx/c-wave-master 在计算机中有着各式各样的文件，比如说EXE这种可执行文件，JPG这种图片文件，也有我们平时看的TXT，或者C，CPP，PHP等代码文件。如果把这些文件... 阅读详情

如题，高手帮帮忙，能够发个播放wav格式的完整源码就更好了，记得是用C不是C++。

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C语言解析wav文件格式 C语言解析wav文件接下来在了解了wav文件的有关概念后，我们将通过学习C语言的有关函数库进行wav文件的一些元数据提取出来备用。 1.wav文件的二进制格式解析一个wav文件的二进制解析：二进制文件，本质上就是一种使用二进制方式存储文件内容的文件统称，我们前面有讲过使用记事本等工具打开之后看到的是乱码，那么我们怎么分析他呢，可以使用UltraEditor，HxD，C32Asm等等。... 阅读详情

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切换为时间正序

chenbenyu 2008-11-04

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谢谢

chengzanmiao 2008-06-16

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mark. 学习了.

q06380925 2008-06-16

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太谢谢4楼了！

zhoukang520 2008-06-15

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四楼的太牛了吧，学习了……

haiyeshenglan 2008-06-15

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太牛了！

iu_81 2008-06-15

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#include "ALLOC.H" 

#include "DOS.H" 

#include "CONIO.H" 

#include "STDIO.H" 

void playwav(char wavefile[14],float delaytime); 

struct WaveData { 

  unsigned int SoundLength, Frequency; 

  char *Sample; 

}; 

struct HeaderType { 

  long         RIFF;      //RIFF header 

  char         NI1 [18];  //not important 

  unsigned int Channels;  //channels 1 = mono; 2 = stereo 

  long         Frequency; //sample frequency 

  char         NI2 [6];   //not important 

  char         BitRes;    //bit resolution 8/16 bit 

  char         NI3 [12];  //not important 

} Header; 

struct WaveData Voice;         //Pointer to wave file 

unsigned int    Base;          //Sound Blaster base address 

char            WaveFile [25]; //File name for the wave file to be played 

/**************************************************************************** 

** Checks to see if a Sound Blaster exists at a given address, returns     ** 

** true if Sound Blaster found, false if not.                              ** 

****************************************************************************/ 

int ResetDSP(unsigned int Test) 

{ 

  //Reset the DSP 

  outportb (Test + 0x6, 1); 

  delay(10); 

  outportb (Test + 0x6, 0); 

  delay(10); 

  //Check if (reset was succesfull 

  if ((inportb(Test + 0xE) & 0x80 == 0x80) && (inportb(Test + 0xA) == 0xAA)) 

  { 

    //DSP was found 

    Base = Test; 

    return (1); 

  } 

  else 

    //No DSP was found 

    return (0); 

} 

/**************************************************************************** 

** Send a byte to the DSP (Digital Signal Processor) on the Sound Blaster  ** 

****************************************************************************/ 

void WriteDSP(unsigned char Value) 

{ 

  //Wait for the DSP to be ready to accept data 

  while ((inportb(Base + 0xC) & 0x80) == 0x80); 

  //Send byte 

  outportb (Base + 0xC, Value); 

} 

/**************************************************************************** 

** Plays a part of the memory                                              ** 

****************************************************************************/ 

void PlayBack (struct WaveData *Wave) 

{ 

  long          LinearAddress; 

  unsigned int  Page, OffSet; 

  unsigned char TimeConstant; 

  TimeConstant = (65536 - (256000000 / Wave->Frequency)) >> 8; 

  WriteDSP(0x40);                  //DSP-command 40h - Set sample frequency 

  WriteDSP(TimeConstant);          //Write time constant 

  //Convert pointer to linear address 

  LinearAddress = FP_SEG (Wave->Sample); 

  LinearAddress = (LinearAddress << 4) + FP_OFF (Wave->Sample); 

  Page = LinearAddress >> 16;      //Calculate page 

  OffSet = LinearAddress & 0xFFFF; //Calculate offset in the page 

  /* 

      Note - this procedure only works with DMA channel 1 

  */ 

  outportb (0x0A, 5);              //Mask DMA channel 1 

  outportb (0x0C, 0);              //Clear byte pointer 

  outportb (0x0B, 0x49);           //Set mode 

  /* 

      The mode consists of the following: 

      0x49 = binary 01 00 10 01 

                    |  |  |  | 

                    |  |  |  +- DMA channel 01 

                    |  |  +---- Read operation (the DSP reads from memory) 

                    |  +------- Single cycle mode 

                    +---------- Block mode 

  */ 

  outportb (0x02, OffSet & 0x100); //Write the offset to the DMA controller 

  outportb (0x02, OffSet >> 8); 

  outportb (0x83, Page);           //Write the page to the DMA controller 

  outportb (0x03, Wave->SoundLength & 0x100); 

  outportb (0x03, Wave->SoundLength >> 8); 

  outportb (0x0A, 1);              //Unmask DMA channel 

  WriteDSP(0x14);                  // DSP-command 14h - Single cycle playback 

  WriteDSP(Wave->SoundLength & 0xFF); 

  WriteDSP(Wave->SoundLength >> 8); 

} 

/**************************************************************************** 

** Loads a wave file into memory.                                          ** 

** This procedure expects a _very_ standard wave header.                   ** 

** It doesn't perform much error checking.                                 ** 

****************************************************************************/ 

int LoadVoice (struct WaveData *Voice, char *FileName) 

{ 

  FILE *WAVFile; 

  //If it can't be opened... 

  WAVFile = fopen(FileName, "rb"); 

  if (WAVFile == NULL) { 

    //..display error message 

    return (0); 

  } 

  //Return length of file for sound length minus 48 bytes for .WAV header 

  fseek(WAVFile, 0L, SEEK_END); 

  Voice->SoundLength = ftell (WAVFile) - 48; 

  fseek(WAVFile, 0L, SEEK_SET); 

  //Check RIFF header 

  if (Voice->SoundLength > 32000) { 

    if (Voice->SoundLength > 64000) { 

      Voice->SoundLength = 64000; 

    } 

  } 

  free(Voice->Sample); 

  Voice->Sample = (char *)malloc(Voice->SoundLength); //Assign memory 

  if (!Voice->Sample) { 

      

    return (0); 

  } 

  //Load the sample data 

  fread(&Header, 46, 1, WAVFile); 

  //Check RIFF header 

  if (Header.RIFF != 0x46464952) { 

    printf ("Not a wave file\n"); 

    return (0); 

  } 

  //Check channels 

  if (Header.Channels != 1) { 

    printf ("Not a mono wave file\n"); 

    return (0); 

  } 

  //Check bit resolution 

  if (Header.BitRes != 8) { 

    printf ("Not an 8-bit wave file\n"); 

    return (0); 

  } 

  Voice->Frequency = Header.Frequency; 

  //Load the sample data 

  fread(Voice->Sample, Voice->SoundLength + 2, 1, WAVFile); 

  fclose (WAVFile); //Close the file 

  return (1); 

} 

void playwav (char wavefile[14], float delaytime = 1.0 ) 

{ 

  if (ResetDSP (0x220)) { 

    //at 220h 

    printf (""); 

  } else { 

    if (ResetDSP (0x240)) { 

      //at 240h 

      printf (""); 

    } else { 

      //or none at all 

      printf (""); 

      return; 

    } 

  } 

  //Load wave file 

  if (LoadVoice (&Voice, wavefile)) { 

    //Start playback 

    PlayBack (&Voice); 

    delay(delaytime*1000); 

    //Stops DMA-transfer 

    WriteDSP (0xD0); 

  } 

}

iu_81 2008-06-15

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调用一些API函数就可以了,一般的用PlaySound,SndPlaySound,函数具体的操作可以查找MSDN

lijiawlm 2008-06-15

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有函数有头文件看看SDK就可以了

K行天下 2008-06-15

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http://www.mscto.com/VC/25780305.html

用C语言能操作wav音频文件吗？

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