WAV file problems...

This is a discussion on WAV file problems... within the C Programming forums, part of the General Programming Boards category; hey, i got this soure code off of this website, but i got 2 errors that i dont know how ...

  1. #1
    Registered User
    Join Date
    Jun 2003
    Posts
    2

    WAV file problems...

    hey, i got this soure code off of this website, but i got 2 errors that i dont know how to fix. the code is:

    /************************************************** **************************
    ** WARNING: You need a HUGE memory model to run this. **
    ************************************************** ***************************
    ** Demonstration of playing a single wave file using DMA **
    ** by Steven H Don **
    ** **
    ** For questions, feel free to e-mail me. **
    ** **
    ** shd@geocities.com **
    ** http://www.geocities.com/SiliconValley/Heights/8574 **
    ** **
    ************************************************** **************************/
    //Include files
    #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);
    }
    }


    The errors i get are:

    Character constant to long in function LoadVoice
    and
    Type mismatch in parameter '_path' in call to 'fopen(const char near*, const char near*)'in function LoadVoice (WaveData near*,char near*)

    so i have only 2 problems, and i really really need this to be done quick. ill keep working on fixing it, but if anyone has anyone can help me, the more code u can give me the better. Also im using TCLITE if that makes ne diffrence. and its windows 95, just cause its at school.

    Thanks

  2. #2
    Registered User Draco's Avatar
    Join Date
    Apr 2002
    Posts
    463
    the first thing I can think of is did you compile it in the huge memory mode?

  3. #3
    Been here, done that.
    Join Date
    May 2003
    Posts
    1,161
    The first thing I can think of, did you read the instructions on posting code?
    Definition: Politics -- Latin, from
    poly meaning many and
    tics meaning blood sucking parasites
    -- Tom Smothers

  4. #4
    Registered User
    Join Date
    Jun 2003
    Posts
    2
    lol actually no i didnt, i just really wanted to know how to finish this, cause the project is due in like....3 classes, so seriously can anyone help me?

  5. #5
    Wannabe Coding God
    Join Date
    Mar 2003
    Posts
    259
    add code tags.
    They say that if you play a Windows Install CD backwords, you hear satanic messages. That's nothing; play it forward and it installs Windows.

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