problem in reading the file through the CODEC

velappan ramasamy

Hi All

I am working on audio processing using the DSK C5510. Initially I open a file using fopen, fread commands and do the processing after which I write back into another file using fwrite say its called output.wav

Now I want to play this output.wav in my program so that can listen using the peripherals in DSK . Can some one suggest me a way of how to configure it from the program.

I have tried using the following code but didnt work. I am struck in developing the algorithm .

#include "tonecfg.h"

#include "dsk5510.h"

#include "dsk5510_aic23.h"

#include "stdio.h"

#include "stdlib.h"

DSK5510_AIC23_Config config = { \

0x0017, /* 0 DSK5510_AIC23_LEFTINVOL Left line input channel volume */ \

0x0017, /* 1 DSK5510_AIC23_RIGHTINVOL Right line input channel volume */\

0x01f9, /* 2 DSK5510_AIC23_LEFTHPVOL Left channel headphone volume */ \

0x01f9, /* 3 DSK5510_AIC23_RIGHTHPVOL Right channel headphone volume */ \

0x0011, /* 4 DSK5510_AIC23_ANAPATH Analog audio path control */ \

0x0000, /* 5 DSK5510_AIC23_DIGPATH Digital audio path control */ \

0x0000, /* 6 DSK5510_AIC23_POWERDOWN Power down control */ \

0x0043, /* 7 DSK5510_AIC23_DIGIF Digital audio interface format */ \

0x008d, /* 8 DSK5510_AIC23_SAMPLERATE Sample rate control */ \

0x0001 /* 9 DSK5510_AIC23_DIGACT Digital interface activation */ \

};

FILE *fpOut;

void main()

{

DSK5510_AIC23_CodecHandle hCodec;

long size;

int sample;

Int16 *c_play;

DSK5510_init();

hCodec = DSK5510_AIC23_openCodec(0, &config);

DSK5510_AIC23_setFreq(hCodec,DSK5510_AIC23_FREQ_8KHZ);

fpOut = fopen("G://workouts//NR//data//nrvelu.wav","r");

fseek(fpOut,0,SEEK_END);

size = ftell(fpOut);

fread(&c_play,sizeof(c_play),1,fpOut);

fseek(fpOut,0,SEEK_SET);

for (sample = 0; sample < size ; sample++)

{

while (!DSK5510_AIC23_write16(hCodec, *c_play)); //left channel

while (!DSK5510_AIC23_write16(hCodec, *c_play++)); // right channel

}

DSK5510_AIC23_closeCodec(hCodec);

fclose(fpOut);

}

I am not sure how to read the raw file and listen using the headphones from the line out.

Can some one pls help me

Thanks in Advance

Regards

velappan

over 14 years ago

0 Mark M over 14 years ago

TI__Mastermind 30140 points

Hi Velappan,

I am looking into your DSK5510 Codec issue today.

Regards,
Mark

0 velappan ramasamy over 14 years ago in reply to Mark M

Intellectual 310 points

Hi Mark

Could you find the problem with the Codec

I actually tried another method

void main()

{

short data;

short i;

long size ;

unsigned short *voiceptr;

if ((fp = fopen("G://workouts//NR//data//nrvelu.wav","r")) == NULL)

{

printf("Can't open experiment parameter file\n");

exit(0);

}

fseek(fp,0,SEEK_END);

size = ftell(fp);

printf("the file size = %ld",size);

fseek(fp,0,SEEK_SET);

fread(&voiceptr,sizeof(short),1,fp);

// Initialize McBSP1 as AIC23 SPI control channel

mcbsp1Init();

// Initialize the AIC23

aic23Init();

// Initialize McBSP2 as AIC23 SPI data channel

mcbsp2Init();

// Playback data via AIC23

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

{

data = *voiceptr++;

while (!aic23Tx(data)); // Send data to left channel

while (!aic23Tx(data)); // Send data to right channel

}

// Power down the AIC23 and reset McBSP

aic23Powerdown();

mcbspReset(1);

mcbspReset(2);

}

But still I am facing the problem.

Regards

velappan

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problem in reading the file through the CODEC