thr3ads.net - Speex dev - [Speex-dev] Error Executing sampledec in VC++ [Oct 2005]

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Mo Win

2005-Oct-17 19:31 UTC

[Speex-dev] Error Executing sampledec in VC++

Hi Steve, thanks for the advice. I placed the appropriate functions outside
the while statement but I still get this error at the while loop:

First-chance exception at 0x004010fa in SPXDEC.exe: 0xC0000005: Access
violation reading location 0x0000000c.
Unhandled exception at 0x004010fa in SPXDEC.exe: 0xC0000005: Access
violation reading location 0x0000000c.

It looks like the same error. I've attached the code below

Thanks,
Mon

Portion of the revised code:


decstate = speex_decoder_init (&speex_nb_mode);
// Set default options for decoding:
temp = 1;
speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);

// Initialize spxbits (structure SpeexBits)
speex_bits_init (&spxbits);

while (!(feof(fo))) // this is where the problem starts
{
fread (&nbBytes, sizeof(int), 1, fo);
fread (cbits, 1, nbBytes, fo);

cout << "1"; // just to see whether the loop iterates

speex_bits_read_from (&spxbits, cbits, nbBytes);
speex_decode (decstate, &spxbits, pcm);


// Copy 1 frame from float pcm to short spx
for (n=0; n<FRAME_SIZE; n++)
spx [n] = pcm [n];

fwrite (spx, sizeof(short), FRAME_SIZE, fs);

}
// end of loop
// Entire file has been read, decoded and saved

speex_decoder_destroy (decstate);
speex_bits_destroy (&spxbits);
fclose (fo);
fclose (fs);

cout << "Finished processing!\n";
}

On 10/18/05, Steve Russell <srussell@innernet.net>
wrote:>
> Mon,
>  Here is feedback that I got concerning the access violation, i.e. the
> failure of the while loop below. Does this solve the problem?
>  Steve
>  My guess is that speex_decoder_init() should be outside the while()..
> loop
> as speex_decoder_destroy() is also outside.
>
> ----- Original Message -----
> *From:* Mo Win <mowin.dev@gmail.com>
> *To:* speex-dev@xiph.org
> *Sent:* Monday, October 17, 2005 8:05 AM
> *Subject:* [Speex-dev] Error Executing sampledec in VC++
>
> hey guys, I just compiled an application similar to sampledec.c (for speex
> 1.1.10) and it was fine but when I executed it, the app exited without
> doing anything. I'm using MS VC 6.0 and this was all I got -
First-chance
> exception in sampledec.exe : 0xC0000005: Access Violation. Has anyone
> encountered this / does anyone know how to deal with it? by the way,
> sampleenc executed perfectly...
>
> When I removed the "while" loop in sampledec, the program
executed fine (I
> placed printf's to check which lines were executed). I also tried
running
> the loop only once (erasing only the while statement and retaining the code
> within it) and it worked fine again. Something seems to be happening during
> loop iteration that causes the program to terminate abnormally.. any clues?
> thanks very much for any tip..
>
> In gratitude,
> Mon
>
> (Below is my code. it's almost exactly like sampleenc except I read a
file
> stream instead of stdin)
>
> #include "speex/speex.h"
>
> #include <stdio.h>
> #include <iostream.h>
>
> void main ()
> {
> // Definitions
> #define FRAME_SIZE 160
> #define FIXED_POINT
>
>  // Variable Declarations
> FILE *fo, *fs;
> short spx [FRAME_SIZE];
> float pcm [FRAME_SIZE];
> char cbits [200];
> int nbBytes, n, temp;
>
> void *decstate;
> SpeexBits spxbits;
>
>
> // Program starts here:
> cout << "Starting spxdec...\n";
> fo = fopen("samp.spx","rb");
>
> if (fo == NULL)
> cout << "Error!\n";
> else
> cout << "Okay!\n";
>
> fs = fopen ("pcmfile", "wb");
>
> if (fs == NULL)
> cout << "Error creating file!\n";
> else
> cout << "File created!\n";
>
>
> while (!(feof(fo)))
> {
> decstate = speex_decoder_init (&speex_nb_mode);
>
> // Set default options for decoding:
> temp = 1;
> speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);
>
>
> // Initialize spxbits (structure SpeexBits)
> speex_bits_init (&spxbits);
>
>
> fread (&nbBytes, sizeof(int), 1, fo);
> fread (cbits, 1, nbBytes, fo);
>
> cout << "1"; // just to see whether the loop iterates
>
> speex_bits_read_from (&spxbits, cbits, nbBytes);
> speex_decode (decstate, &spxbits, pcm);
>
>
> // Copy 1 frame from float pcm to short spx
> for (n=0; n<FRAME_SIZE; n++)
> spx [n] = pcm [n];
>
> fwrite (spx, sizeof(short), FRAME_SIZE, fs);
>
> }
> // end of loop
> // Entire file has been read, decoded and saved
>
> speex_decoder_destroy (decstate);
> speex_bits_destroy (&spxbits);
> fclose (fo);
> fclose (fs);
>
> cout << "Finished processing!\n";
> }
>
>  ------------------------------
>
> _______________________________________________
> Speex-dev mailing list
> Speex-dev@xiph.org
> http://lists.xiph.org/mailman/listinfo/speex-dev
>
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Duane Storey

2005-Oct-17 19:37 UTC

head link

[Speex-dev] Error Executing sampledec in VC++

You should really do a check to make sure         

 

nbBytes isn't larger than 200, otherwise you're going to read past the
end
of your char array.

 

fread (&nbBytes, sizeof(int), 1, fo);

 

  _____  

From: speex-dev-bounces@xiph.org [mailto:speex-dev-bounces@xiph.org] On
Behalf Of Mo Win
Sent: Monday, October 17, 2005 7:31 PM
To: speex-dev@xiph.org
Subject: Re: [Speex-dev] Error Executing sampledec in VC++

 

Hi Steve, thanks for the advice. I placed the appropriate functions outside
the while statement but I still get this error at the while loop:

First-chance exception at 0x004010fa in SPXDEC.exe: 0xC0000005: Access
violation reading location 0x0000000c.
Unhandled exception at 0x004010fa in SPXDEC.exe: 0xC0000005: Access
violation reading location 0x0000000c.

It looks like the same error. I've attached the code below

Thanks,
Mon

Portion of the revised code:


    decstate = speex_decoder_init (&speex_nb_mode);
    // Set default options for decoding:
    temp = 1;
    speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);

    // Initialize spxbits (structure SpeexBits)
    speex_bits_init (&spxbits);

    while (!(feof(fo)))     // this is where the problem starts
    {
        fread (&nbBytes, sizeof(int), 1, fo);
        fread (cbits, 1, nbBytes, fo);

        cout << "1"; // just to see whether the loop iterates

        speex_bits_read_from (&spxbits, cbits, nbBytes);
        speex_decode (decstate, &spxbits, pcm);


        // Copy 1 frame from float pcm to short spx
        for (n=0; n<FRAME_SIZE; n++)
            spx [n] = pcm [n];

        fwrite (spx, sizeof(short), FRAME_SIZE, fs);

    }
     // end of  loop
    // Entire file has been read, decoded and saved

    speex_decoder_destroy (decstate);
    speex_bits_destroy (&spxbits);
    fclose (fo);
    fclose (fs);
   
    cout << "Finished processing!\n";
}

On 10/18/05, Steve Russell <srussell@innernet.net> wrote:

Mon,

 

Here is feedback that I got concerning the access violation, i.e. the
failure of the while loop below.  Does this solve the problem?

 

Steve

 

My guess is that speex_decoder_init() should be outside the while().. loop
as speex_decoder_destroy() is also outside.

----- Original Message ----- 

From: Mo <mailto:mowin.dev@gmail.com>  Win 

To: speex-dev@xiph.org 

Sent: Monday, October 17, 2005 8:05 AM

Subject: [Speex-dev] Error Executing sampledec in VC++

 

hey guys, I just compiled an application similar to sampledec.c (for speex
1.1.10) and it was fine but when I executed it, the app exited without doing
anything. I'm using MS VC 6.0 and this was all I got - First-chance
exception in sampledec.exe : 0xC0000005: Access Violation. Has anyone
encountered this / does anyone know how to deal with it? by the way,
sampleenc executed perfectly... 

When I removed the "while" loop in sampledec, the program executed
fine (I
placed printf's to check which lines were executed). I also tried running
the loop only once (erasing only the while statement and retaining the code
within it) and it worked fine again. Something seems to be happening during
loop iteration that causes the program to terminate abnormally.. any clues?
thanks very much for any tip..

In gratitude,
Mon

(Below is my code. it's almost exactly like sampleenc except I read a file
stream instead of stdin)

#include "speex/speex.h"

#include <stdio.h>
#include <iostream.h>

void main ()
{
    // Definitions
    #define FRAME_SIZE 160
    #define FIXED_POINT

    // Variable Declarations
    FILE *fo, *fs;
    short spx [FRAME_SIZE];
    float pcm [FRAME_SIZE];
    char cbits [200];
    int nbBytes, n, temp;

    void *decstate;
    SpeexBits spxbits;


    // Program starts here:
    cout << "Starting spxdec...\n";
    fo = fopen("samp.spx","rb");

    if (fo == NULL)
        cout << "Error!\n";
    else
        cout << "Okay!\n";

    fs = fopen ("pcmfile", "wb");

    if (fs == NULL)
        cout << "Error creating file!\n";
    else
        cout << "File created!\n";


    while (!(feof(fo)))
    {
    decstate = speex_decoder_init (&speex_nb_mode);

    // Set default options for decoding:
    temp = 1;
    speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);


    // Initialize spxbits (structure SpeexBits)
    speex_bits_init (&spxbits);


        fread (&nbBytes, sizeof(int), 1, fo);
        fread (cbits, 1, nbBytes, fo);

        cout << "1"; // just to see whether the loop iterates

        speex_bits_read_from (&spxbits, cbits, nbBytes);
        speex_decode (decstate, &spxbits, pcm);


        // Copy 1 frame from float pcm to short spx
        for (n=0; n<FRAME_SIZE; n++)
            spx [n] = pcm [n];

        fwrite (spx, sizeof(short), FRAME_SIZE, fs);

    }
     // end of  loop
    // Entire file has been read, decoded and saved

    speex_decoder_destroy (decstate);
    speex_bits_destroy (&spxbits);
    fclose (fo);
    fclose (fs);
    
    cout << "Finished processing!\n";
}





  _____  


_______________________________________________
Speex-dev mailing list
Speex-dev@xiph.org
http://lists.xiph.org/mailman/listinfo/speex-dev

 

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Steve Russell

2005-Oct-17 19:44 UTC

head link

[Speex-dev] Error Executing sampledec in VC++

Mon,

Here is an additional post that came to me regarding your trouble.  In the
meantime, I will take your latest comments and see what more feedback we can
get.  I don't know what it is, and I haven't taken the time in the last
few months to try again to get Speex going inside C++, but something about it
has been much more difficult for me to grasp than both mmio and Ogg Vorbis.

(That's not a criticism!  I appreciate all the "free" efforts
involved.)

Steve

steve,

your speex decoding code looks ok, only you have to be sure that you have
the spx file encoded correctly as well. the point is the problem could also
be caused by the source file being read and if you are at all reading it
correctly.

what i'll probably do here is:

1. check the encoding code to validate the integrity of the spx file
2. check the decoding code if the sizes are being read correctly.

the spx file here shows a certain formatting structure where each item
size+data, so i assume this is a variable bitrate (VBR) encoding where item
sizes could be of any value. to make it easier you can also do CBR, where
your speex data are encoded on a constant bitrate.  this will make debugging
easier for starters until you know what the problem is.

regards,
ronald
  ----- Original Message ----- 
  From: Mo Win 
  To: speex-dev@xiph.org 
  Cc: Steve Russell 
  Sent: Monday, October 17, 2005 10:31 PM
  Subject: Re: [Speex-dev] Error Executing sampledec in VC++


  Hi Steve, thanks for the advice. I placed the appropriate functions outside
the while statement but I still get this error at the while loop:

  First-chance exception at 0x004010fa in SPXDEC.exe: 0xC0000005: Access
violation reading location 0x0000000c.
  Unhandled exception at 0x004010fa in SPXDEC.exe: 0xC0000005: Access violation
reading location 0x0000000c.

  It looks like the same error. I've attached the code below

  Thanks,
  Mon

  Portion of the revised code:


      decstate = speex_decoder_init (&speex_nb_mode);
      // Set default options for decoding:
      temp = 1;
      speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);

      // Initialize spxbits (structure SpeexBits)
      speex_bits_init (&spxbits);

      while (!(feof(fo)))     // this is where the problem starts
      {
          fread (&nbBytes, sizeof(int), 1, fo);
          fread (cbits, 1, nbBytes, fo);

          cout << "1"; // just to see whether the loop iterates

          speex_bits_read_from (&spxbits, cbits, nbBytes);
          speex_decode (decstate, &spxbits, pcm);


          // Copy 1 frame from float pcm to short spx
          for (n=0; n<FRAME_SIZE; n++)
              spx [n] = pcm [n];

          fwrite (spx, sizeof(short), FRAME_SIZE, fs);

      }
       // end of  loop
      // Entire file has been read, decoded and saved

      speex_decoder_destroy (decstate);
      speex_bits_destroy (&spxbits);
      fclose (fo);
      fclose (fs);
     
      cout << "Finished processing!\n";
  }


  On 10/18/05, Steve Russell <srussell@innernet.net> wrote:
    Mon,

    Here is feedback that I got concerning the access violation, i.e. the
failure of the while loop below.  Does this solve the problem?

    Steve

    My guess is that speex_decoder_init() should be outside the while().. loop
    as speex_decoder_destroy() is also outside.
      ----- Original Message ----- 
      From: Mo Win 
      To: speex-dev@xiph.org 
      Sent: Monday, October 17, 2005 8:05 AM
      Subject: [Speex-dev] Error Executing sampledec in VC++


      hey guys, I just compiled an application similar to sampledec.c (for speex
1.1.10) and it was fine but when I executed it, the app exited without doing
anything. I'm using MS VC 6.0 and this was all I got - First-chance
exception in sampledec.exe : 0xC0000005: Access Violation. Has anyone
encountered this / does anyone know how to deal with it? by the way, sampleenc
executed perfectly...

      When I removed the "while" loop in sampledec, the program
executed fine (I placed printf's to check which lines were executed). I also
tried running the loop only once (erasing only the while statement and retaining
the code within it) and it worked fine again. Something seems to be happening
during loop iteration that causes the program to terminate abnormally.. any
clues? thanks very much for any tip..

      In gratitude,
      Mon

      (Below is my code. it's almost exactly like sampleenc except I read a
file stream instead of stdin)

      #include "speex/speex.h"

      #include <stdio.h>
      #include <iostream.h>

      void main ()
      {
          // Definitions
          #define FRAME_SIZE 160
          #define FIXED_POINT

          // Variable Declarations
          FILE *fo, *fs;
          short spx [FRAME_SIZE];
          float pcm [FRAME_SIZE];
          char cbits [200];
          int nbBytes, n, temp;

          void *decstate;
          SpeexBits spxbits;


          // Program starts here:
          cout << "Starting spxdec...\n";
          fo = fopen("samp.spx","rb");

          if (fo == NULL)
              cout << "Error!\n";
          else
              cout << "Okay!\n";

          fs = fopen ("pcmfile", "wb");

          if (fs == NULL)
              cout << "Error creating file!\n";
          else
              cout << "File created!\n";


          while (!(feof(fo)))
          {
          decstate = speex_decoder_init (&speex_nb_mode);

          // Set default options for decoding:
          temp = 1;
          speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);


          // Initialize spxbits (structure SpeexBits)
          speex_bits_init (&spxbits);


              fread (&nbBytes, sizeof(int), 1, fo);
              fread (cbits, 1, nbBytes, fo);

              cout << "1"; // just to see whether the loop
iterates

              speex_bits_read_from (&spxbits, cbits, nbBytes);
              speex_decode (decstate, &spxbits, pcm);


              // Copy 1 frame from float pcm to short spx
              for (n=0; n<FRAME_SIZE; n++)
                  spx [n] = pcm [n];

              fwrite (spx, sizeof(short), FRAME_SIZE, fs);

          }
           // end of  loop
          // Entire file has been read, decoded and saved

          speex_decoder_destroy (decstate);
          speex_bits_destroy (&spxbits);
          fclose (fo);
          fclose (fs);
          
          cout << "Finished processing!\n";
      }




--------------------------------------------------------------------------


      _______________________________________________
      Speex-dev mailing list
      Speex-dev@xiph.org
      http://lists.xiph.org/mailman/listinfo/speex-dev



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Steve Russell

2005-Oct-17 19:54 UTC

head link

[Speex-dev] Error Executing sampledec in VC++

Mon,

Since the buffer check was mentioned, I will pass on the bulk of another post
which has comments interwoven with your sample.  This person admitted to not
knowing Speex, but at least points out your buffer overflow possibility and
maybe something else helpful.

Steve
>    // Program starts here:
>    cout << "Starting spxdec...\n";
>    fo = fopen("samp.spx","rb");
>
>    if (fo == NULL)
>        cout << "Error!\n";
if its not open why continue?
>    else
>        cout << "Okay!\n";
>
>    fs = fopen ("pcmfile", "wb");
>
>    if (fs == NULL)
>        cout << "Error creating file!\n";
again, why continue?
>    else
>        cout << "File created!\n";
>
>
>    while (!(feof(fo)))
>    {
>    decstate = speex_decoder_init (&speex_nb_mode);maybe the decoder init doesn't like getting called multiple times?
>
>    // Set default options for decoding:
>    temp = 1;
>    speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);maybe the decoder ctl doesn't like getting called multiple times?
>
>
>    // Initialize spxbits (structure SpeexBits)
>    speex_bits_init (&spxbits);maybe the bits init doesn't like getting called multiple times?
>
>
>        fread (&nbBytes, sizeof(int), 1, fo);
>        fread (cbits, 1, nbBytes, fo);nbBytes could be >200 thus overflowing the buffer... all buffer sizes should 
be checked before being used.
>
>        cout << "1"; // just to see whether the loop
iterates
>
>        speex_bits_read_from (&spxbits, cbits, nbBytes);
>        speex_decode (decstate, &spxbits, pcm);
>
>
>        // Copy 1 frame from float pcm to short spx
>        for (n=0; n<FRAME_SIZE; n++)
>            spx [n] = pcm [n];
>
>        fwrite (spx, sizeof(short), FRAME_SIZE, fs);
>
>    }
>     // end of  loop
>    // Entire file has been read, decoded and saved
>
>    speex_decoder_destroy (decstate);
>    speex_bits_destroy (&spxbits);
>    fclose (fo);
>    fclose (fs);
>
>    cout << "Finished processing!\n";
> }-----------
  ----- Original Message ----- 
  From: Duane Storey 
  To: 'Mo Win' ; speex-dev@xiph.org 
  Sent: Monday, October 17, 2005 10:40 PM
  Subject: RE: [Speex-dev] Error Executing sampledec in VC++


  You should really do a check to make sure         

   

  nbBytes isn't larger than 200, otherwise you're going to read past the
end of your char array.

   

  fread (&nbBytes, sizeof(int), 1, fo);

   


------------------------------------------------------------------------------

  From: speex-dev-bounces@xiph.org [mailto:speex-dev-bounces@xiph.org] On Behalf
Of Mo Win
  Sent: Monday, October 17, 2005 7:31 PM
  To: speex-dev@xiph.org
  Subject: Re: [Speex-dev] Error Executing sampledec in VC++

   

  Hi Steve, thanks for the advice. I placed the appropriate functions outside
the while statement but I still get this error at the while loop:

  First-chance exception at 0x004010fa in SPXDEC.exe: 0xC0000005: Access
violation reading location 0x0000000c.
  Unhandled exception at 0x004010fa in SPXDEC.exe: 0xC0000005: Access violation
reading location 0x0000000c.

  It looks like the same error. I've attached the code below

  Thanks,
  Mon

  Portion of the revised code:


      decstate = speex_decoder_init (&speex_nb_mode);
      // Set default options for decoding:
      temp = 1;
      speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);

      // Initialize spxbits (structure SpeexBits)
      speex_bits_init (&spxbits);

      while (!(feof(fo)))     // this is where the problem starts
      {
          fread (&nbBytes, sizeof(int), 1, fo);
          fread (cbits, 1, nbBytes, fo);

          cout << "1"; // just to see whether the loop iterates

          speex_bits_read_from (&spxbits, cbits, nbBytes);
          speex_decode (decstate, &spxbits, pcm);


          // Copy 1 frame from float pcm to short spx
          for (n=0; n<FRAME_SIZE; n++)
              spx [n] = pcm [n];

          fwrite (spx, sizeof(short), FRAME_SIZE, fs);

      }
       // end of  loop
      // Entire file has been read, decoded and saved

      speex_decoder_destroy (decstate);
      speex_bits_destroy (&spxbits);
      fclose (fo);
      fclose (fs);
     
      cout << "Finished processing!\n";
  }

  On 10/18/05, Steve Russell <srussell@innernet.net> wrote:

  Mon,

   

  Here is feedback that I got concerning the access violation, i.e. the failure
of the while loop below.  Does this solve the problem?

   

  Steve

   

  My guess is that speex_decoder_init() should be outside the while().. loop
  as speex_decoder_destroy() is also outside.

    ----- Original Message ----- 

    From: Mo Win 

    To: speex-dev@xiph.org 

    Sent: Monday, October 17, 2005 8:05 AM

    Subject: [Speex-dev] Error Executing sampledec in VC++

     

    hey guys, I just compiled an application similar to sampledec.c (for speex
1.1.10) and it was fine but when I executed it, the app exited without doing
anything. I'm using MS VC 6.0 and this was all I got - First-chance
exception in sampledec.exe : 0xC0000005: Access Violation. Has anyone
encountered this / does anyone know how to deal with it? by the way, sampleenc
executed perfectly...

    When I removed the "while" loop in sampledec, the program executed
fine (I placed printf's to check which lines were executed). I also tried
running the loop only once (erasing only the while statement and retaining the
code within it) and it worked fine again. Something seems to be happening during
loop iteration that causes the program to terminate abnormally.. any clues?
thanks very much for any tip..

    In gratitude,
    Mon

    (Below is my code. it's almost exactly like sampleenc except I read a
file stream instead of stdin)

    #include "speex/speex.h"

    #include <stdio.h>
    #include <iostream.h>

    void main ()
    {
        // Definitions
        #define FRAME_SIZE 160
        #define FIXED_POINT

        // Variable Declarations
        FILE *fo, *fs;
        short spx [FRAME_SIZE];
        float pcm [FRAME_SIZE];
        char cbits [200];
        int nbBytes, n, temp;

        void *decstate;
        SpeexBits spxbits;


        // Program starts here:
        cout << "Starting spxdec...\n";
        fo = fopen("samp.spx","rb");

        if (fo == NULL)
            cout << "Error!\n";
        else
            cout << "Okay!\n";

        fs = fopen ("pcmfile", "wb");

        if (fs == NULL)
            cout << "Error creating file!\n";
        else
            cout << "File created!\n";


        while (!(feof(fo)))
        {
        decstate = speex_decoder_init (&speex_nb_mode);

        // Set default options for decoding:
        temp = 1;
        speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);


        // Initialize spxbits (structure SpeexBits)
        speex_bits_init (&spxbits);


            fread (&nbBytes, sizeof(int), 1, fo);
            fread (cbits, 1, nbBytes, fo);

            cout << "1"; // just to see whether the loop
iterates

            speex_bits_read_from (&spxbits, cbits, nbBytes);
            speex_decode (decstate, &spxbits, pcm);


            // Copy 1 frame from float pcm to short spx
            for (n=0; n<FRAME_SIZE; n++)
                spx [n] = pcm [n];

            fwrite (spx, sizeof(short), FRAME_SIZE, fs);

        }
         // end of  loop
        // Entire file has been read, decoded and saved

        speex_decoder_destroy (decstate);
        speex_bits_destroy (&spxbits);
        fclose (fo);
        fclose (fs);
        
        cout << "Finished processing!\n";
    }





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Jim Crichton

2005-Oct-18 07:25 UTC

head link

[Speex-dev] Error Executing sampledec in VC++

Mon,

You should be calling speex_bits_reset inside the loop.  This resets some
pointers to the beginning of the bit buffer.  If you don't do this, the
pointers will grow indefinitely.  Look at testenc.c, or at the modified versions
that I posted yesterday for the TI DSPs.  You might want to get the example to
run first, then modify it as you need.

- Jim
  ----- Original Message ----- 
  From: Mo Win 
  To: speex-dev@xiph.org 
  Sent: Monday, October 17, 2005 10:31 PM
  Subject: Re: [Speex-dev] Error Executing sampledec in VC++


  Hi Steve, thanks for the advice. I placed the appropriate functions outside
the while statement but I still get this error at the while loop:

  First-chance exception at 0x004010fa in SPXDEC.exe: 0xC0000005: Access
violation reading location 0x0000000c.
  Unhandled exception at 0x004010fa in SPXDEC.exe: 0xC0000005: Access violation
reading location 0x0000000c.

  It looks like the same error. I've attached the code below

  Thanks,
  Mon

  Portion of the revised code:


      decstate = speex_decoder_init (&speex_nb_mode);
      // Set default options for decoding:
      temp = 1;
      speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);

      // Initialize spxbits (structure SpeexBits)
      speex_bits_init (&spxbits);

      while (!(feof(fo)))     // this is where the problem starts
      {
          fread (&nbBytes, sizeof(int), 1, fo);
          fread (cbits, 1, nbBytes, fo);

          cout << "1"; // just to see whether the loop iterates

          speex_bits_read_from (&spxbits, cbits, nbBytes);
          speex_decode (decstate, &spxbits, pcm);


          // Copy 1 frame from float pcm to short spx
          for (n=0; n<FRAME_SIZE; n++)
              spx [n] = pcm [n];

          fwrite (spx, sizeof(short), FRAME_SIZE, fs);

      }
       // end of  loop
      // Entire file has been read, decoded and saved

      speex_decoder_destroy (decstate);
      speex_bits_destroy (&spxbits);
      fclose (fo);
      fclose (fs);
     
      cout << "Finished processing!\n";
  }


  On 10/18/05, Steve Russell <srussell@innernet.net> wrote:
    Mon,

    Here is feedback that I got concerning the access violation, i.e. the
failure of the while loop below.  Does this solve the problem?

    Steve

    My guess is that speex_decoder_init() should be outside the while().. loop
    as speex_decoder_destroy() is also outside.
      ----- Original Message ----- 
      From: Mo Win 
      To: speex-dev@xiph.org 
      Sent: Monday, October 17, 2005 8:05 AM
      Subject: [Speex-dev] Error Executing sampledec in VC++


      hey guys, I just compiled an application similar to sampledec.c (for speex
1.1.10) and it was fine but when I executed it, the app exited without doing
anything. I'm using MS VC 6.0 and this was all I got - First-chance
exception in sampledec.exe : 0xC0000005: Access Violation. Has anyone
encountered this / does anyone know how to deal with it? by the way, sampleenc
executed perfectly...

      When I removed the "while" loop in sampledec, the program
executed fine (I placed printf's to check which lines were executed). I also
tried running the loop only once (erasing only the while statement and retaining
the code within it) and it worked fine again. Something seems to be happening
during loop iteration that causes the program to terminate abnormally.. any
clues? thanks very much for any tip..

      In gratitude,
      Mon

      (Below is my code. it's almost exactly like sampleenc except I read a
file stream instead of stdin)

      #include "speex/speex.h"

      #include <stdio.h>
      #include <iostream.h>

      void main ()
      {
          // Definitions
          #define FRAME_SIZE 160
          #define FIXED_POINT

          // Variable Declarations
          FILE *fo, *fs;
          short spx [FRAME_SIZE];
          float pcm [FRAME_SIZE];
          char cbits [200];
          int nbBytes, n, temp;

          void *decstate;
          SpeexBits spxbits;


          // Program starts here:
          cout << "Starting spxdec...\n";
          fo = fopen("samp.spx","rb");

          if (fo == NULL)
              cout << "Error!\n";
          else
              cout << "Okay!\n";

          fs = fopen ("pcmfile", "wb");

          if (fs == NULL)
              cout << "Error creating file!\n";
          else
              cout << "File created!\n";


          while (!(feof(fo)))
          {
          decstate = speex_decoder_init (&speex_nb_mode);

          // Set default options for decoding:
          temp = 1;
          speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);


          // Initialize spxbits (structure SpeexBits)
          speex_bits_init (&spxbits);


              fread (&nbBytes, sizeof(int), 1, fo);
              fread (cbits, 1, nbBytes, fo);

              cout << "1"; // just to see whether the loop
iterates

              speex_bits_read_from (&spxbits, cbits, nbBytes);
              speex_decode (decstate, &spxbits, pcm);


              // Copy 1 frame from float pcm to short spx
              for (n=0; n<FRAME_SIZE; n++)
                  spx [n] = pcm [n];

              fwrite (spx, sizeof(short), FRAME_SIZE, fs);

          }
           // end of  loop
          // Entire file has been read, decoded and saved

          speex_decoder_destroy (decstate);
          speex_bits_destroy (&spxbits);
          fclose (fo);
          fclose (fs);
          
          cout << "Finished processing!\n";
      }




--------------------------------------------------------------------------


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      Speex-dev mailing list
      Speex-dev@xiph.org
      http://lists.xiph.org/mailman/listinfo/speex-dev






------------------------------------------------------------------------------


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  Speex-dev@xiph.org
  http://lists.xiph.org/mailman/listinfo/speex-dev
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Steve Russell

2005-Oct-18 12:39 UTC

head link

[Speex-dev] Error Executing sampledec in VC++

One more bit of counsel I received that may or may not be needed by now, Mon --

Use the debug build of speex if you can.  Break in the debugger and go up
the call stack to locate where in your code it is faulting.  Trace line by
line if you have to.
  ----- Original Message ----- 
  From: Mo Win 
  To: speex-dev@xiph.org 
  Cc: Steve Russell 
  Sent: Monday, October 17, 2005 10:31 PM
  Subject: Re: [Speex-dev] Error Executing sampledec in VC++


  Hi Steve, thanks for the advice. I placed the appropriate functions outside
the while statement but I still get this error at the while loop:

  First-chance exception at 0x004010fa in SPXDEC.exe: 0xC0000005: Access
violation reading location 0x0000000c.
  Unhandled exception at 0x004010fa in SPXDEC.exe: 0xC0000005: Access violation
reading location 0x0000000c.

  It looks like the same error. I've attached the code below

  Thanks,
  Mon

  Portion of the revised code:


      decstate = speex_decoder_init (&speex_nb_mode);
      // Set default options for decoding:
      temp = 1;
      speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);

      // Initialize spxbits (structure SpeexBits)
      speex_bits_init (&spxbits);

      while (!(feof(fo)))     // this is where the problem starts
      {
          fread (&nbBytes, sizeof(int), 1, fo);
          fread (cbits, 1, nbBytes, fo);

          cout << "1"; // just to see whether the loop iterates

          speex_bits_read_from (&spxbits, cbits, nbBytes);
          speex_decode (decstate, &spxbits, pcm);


          // Copy 1 frame from float pcm to short spx
          for (n=0; n<FRAME_SIZE; n++)
              spx [n] = pcm [n];

          fwrite (spx, sizeof(short), FRAME_SIZE, fs);

      }
       // end of  loop
      // Entire file has been read, decoded and saved

      speex_decoder_destroy (decstate);
      speex_bits_destroy (&spxbits);
      fclose (fo);
      fclose (fs);
     
      cout << "Finished processing!\n";
  }


  On 10/18/05, Steve Russell <srussell@innernet.net> wrote:
    Mon,

    Here is feedback that I got concerning the access violation, i.e. the
failure of the while loop below.  Does this solve the problem?

    Steve

    My guess is that speex_decoder_init() should be outside the while().. loop
    as speex_decoder_destroy() is also outside.
      ----- Original Message ----- 
      From: Mo Win 
      To: speex-dev@xiph.org 
      Sent: Monday, October 17, 2005 8:05 AM
      Subject: [Speex-dev] Error Executing sampledec in VC++


      hey guys, I just compiled an application similar to sampledec.c (for speex
1.1.10) and it was fine but when I executed it, the app exited without doing
anything. I'm using MS VC 6.0 and this was all I got - First-chance
exception in sampledec.exe : 0xC0000005: Access Violation. Has anyone
encountered this / does anyone know how to deal with it? by the way, sampleenc
executed perfectly...

      When I removed the "while" loop in sampledec, the program
executed fine (I placed printf's to check which lines were executed). I also
tried running the loop only once (erasing only the while statement and retaining
the code within it) and it worked fine again. Something seems to be happening
during loop iteration that causes the program to terminate abnormally.. any
clues? thanks very much for any tip..

      In gratitude,
      Mon

      (Below is my code. it's almost exactly like sampleenc except I read a
file stream instead of stdin)

      #include "speex/speex.h"

      #include <stdio.h>
      #include <iostream.h>

      void main ()
      {
          // Definitions
          #define FRAME_SIZE 160
          #define FIXED_POINT

          // Variable Declarations
          FILE *fo, *fs;
          short spx [FRAME_SIZE];
          float pcm [FRAME_SIZE];
          char cbits [200];
          int nbBytes, n, temp;

          void *decstate;
          SpeexBits spxbits;


          // Program starts here:
          cout << "Starting spxdec...\n";
          fo = fopen("samp.spx","rb");

          if (fo == NULL)
              cout << "Error!\n";
          else
              cout << "Okay!\n";

          fs = fopen ("pcmfile", "wb");

          if (fs == NULL)
              cout << "Error creating file!\n";
          else
              cout << "File created!\n";


          while (!(feof(fo)))
          {
          decstate = speex_decoder_init (&speex_nb_mode);

          // Set default options for decoding:
          temp = 1;
          speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);


          // Initialize spxbits (structure SpeexBits)
          speex_bits_init (&spxbits);


              fread (&nbBytes, sizeof(int), 1, fo);
              fread (cbits, 1, nbBytes, fo);

              cout << "1"; // just to see whether the loop
iterates

              speex_bits_read_from (&spxbits, cbits, nbBytes);
              speex_decode (decstate, &spxbits, pcm);


              // Copy 1 frame from float pcm to short spx
              for (n=0; n<FRAME_SIZE; n++)
                  spx [n] = pcm [n];

              fwrite (spx, sizeof(short), FRAME_SIZE, fs);

          }
           // end of  loop
          // Entire file has been read, decoded and saved

          speex_decoder_destroy (decstate);
          speex_bits_destroy (&spxbits);
          fclose (fo);
          fclose (fs);
          
          cout << "Finished processing!\n";
      }




--------------------------------------------------------------------------


      _______________________________________________
      Speex-dev mailing list
      Speex-dev@xiph.org
      http://lists.xiph.org/mailman/listinfo/speex-dev



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Steve Russell

2005-Oct-25 13:58 UTC

head link

[Speex-dev] Error Executing sampledec in VC++

Mon,

How did your decoder inside Visual Studio turn out?  Are you going to share the
results?

Steve Russell
  ----- Original Message ----- 
  From: Mo Win 
  To: speex-dev@xiph.org 
  Cc: Steve Russell 
  Sent: Monday, October 17, 2005 10:31 PM
  Subject: Re: [Speex-dev] Error Executing sampledec in VC++


  Hi Steve, thanks for the advice. I placed the appropriate functions outside
the while statement but I still get this error at the while loop:

  First-chance exception at 0x004010fa in SPXDEC.exe: 0xC0000005: Access
violation reading location 0x0000000c.
  Unhandled exception at 0x004010fa in SPXDEC.exe: 0xC0000005: Access violation
reading location 0x0000000c.

  It looks like the same error. I've attached the code below

  Thanks,
  Mon

  Portion of the revised code:


      decstate = speex_decoder_init (&speex_nb_mode);
      // Set default options for decoding:
      temp = 1;
      speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);

      // Initialize spxbits (structure SpeexBits)
      speex_bits_init (&spxbits);

      while (!(feof(fo)))     // this is where the problem starts
      {
          fread (&nbBytes, sizeof(int), 1, fo);
          fread (cbits, 1, nbBytes, fo);

          cout << "1"; // just to see whether the loop iterates

          speex_bits_read_from (&spxbits, cbits, nbBytes);
          speex_decode (decstate, &spxbits, pcm);


          // Copy 1 frame from float pcm to short spx
          for (n=0; n<FRAME_SIZE; n++)
              spx [n] = pcm [n];

          fwrite (spx, sizeof(short), FRAME_SIZE, fs);

      }
       // end of  loop
      // Entire file has been read, decoded and saved

      speex_decoder_destroy (decstate);
      speex_bits_destroy (&spxbits);
      fclose (fo);
      fclose (fs);
     
      cout << "Finished processing!\n";
  }


  On 10/18/05, Steve Russell <srussell@innernet.net> wrote:
    Mon,

    Here is feedback that I got concerning the access violation, i.e. the
failure of the while loop below.  Does this solve the problem?

    Steve

    My guess is that speex_decoder_init() should be outside the while().. loop
    as speex_decoder_destroy() is also outside.
      ----- Original Message ----- 
      From: Mo Win 
      To: speex-dev@xiph.org 
      Sent: Monday, October 17, 2005 8:05 AM
      Subject: [Speex-dev] Error Executing sampledec in VC++


      hey guys, I just compiled an application similar to sampledec.c (for speex
1.1.10) and it was fine but when I executed it, the app exited without doing
anything. I'm using MS VC 6.0 and this was all I got - First-chance
exception in sampledec.exe : 0xC0000005: Access Violation. Has anyone
encountered this / does anyone know how to deal with it? by the way, sampleenc
executed perfectly...

      When I removed the "while" loop in sampledec, the program
executed fine (I placed printf's to check which lines were executed). I also
tried running the loop only once (erasing only the while statement and retaining
the code within it) and it worked fine again. Something seems to be happening
during loop iteration that causes the program to terminate abnormally.. any
clues? thanks very much for any tip..

      In gratitude,
      Mon

      (Below is my code. it's almost exactly like sampleenc except I read a
file stream instead of stdin)

      #include "speex/speex.h"

      #include <stdio.h>
      #include <iostream.h>

      void main ()
      {
          // Definitions
          #define FRAME_SIZE 160
          #define FIXED_POINT

          // Variable Declarations
          FILE *fo, *fs;
          short spx [FRAME_SIZE];
          float pcm [FRAME_SIZE];
          char cbits [200];
          int nbBytes, n, temp;

          void *decstate;
          SpeexBits spxbits;


          // Program starts here:
          cout << "Starting spxdec...\n";
          fo = fopen("samp.spx","rb");

          if (fo == NULL)
              cout << "Error!\n";
          else
              cout << "Okay!\n";

          fs = fopen ("pcmfile", "wb");

          if (fs == NULL)
              cout << "Error creating file!\n";
          else
              cout << "File created!\n";


          while (!(feof(fo)))
          {
          decstate = speex_decoder_init (&speex_nb_mode);

          // Set default options for decoding:
          temp = 1;
          speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp);


          // Initialize spxbits (structure SpeexBits)
          speex_bits_init (&spxbits);


              fread (&nbBytes, sizeof(int), 1, fo);
              fread (cbits, 1, nbBytes, fo);

              cout << "1"; // just to see whether the loop
iterates

              speex_bits_read_from (&spxbits, cbits, nbBytes);
              speex_decode (decstate, &spxbits, pcm);


              // Copy 1 frame from float pcm to short spx
              for (n=0; n<FRAME_SIZE; n++)
                  spx [n] = pcm [n];

              fwrite (spx, sizeof(short), FRAME_SIZE, fs);

          }
           // end of  loop
          // Entire file has been read, decoded and saved

          speex_decoder_destroy (decstate);
          speex_bits_destroy (&spxbits);
          fclose (fo);
          fclose (fs);
          
          cout << "Finished processing!\n";
      }




--------------------------------------------------------------------------


      _______________________________________________
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      Speex-dev@xiph.org
      http://lists.xiph.org/mailman/listinfo/speex-dev



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