int main( int argc, char *argv[])
{
static FLOAT synth_buf[L_FRAME+M]; /* Synthesis */
FLOAT *synth;
static int parm[PRM_SIZE+2]; /* Synthesis parameters + BFI */
static INT16 serial[SERIAL_SIZE]; /* Serial stream */
static FLOAT Az_dec[MP1*2]; /* Decoded Az for post-filter */
static int T2[2]; /* Decoded Pitch */
INT32 frame;
int i;
FILE *f_syn, *f_serial;
printf("\n");
printf("************** G.729A 8 KBIT/S SPEECH DECODER ************\n");
printf("\n");
printf("----------------- Floating point C simulation ----------------\n");
printf("\n");
printf("------------ Version 1.01 (Release 2, November 2006) --------\n");
printf("\n");
/* Passed arguments */
if ( argc != 3)
{
printf("Usage :%s bitstream_file outputspeech_file\n",argv[0]);
printf("\n");
printf("Format for bitstream_file:\n");
printf(" One (2-byte) synchronization word \n");
printf(" One (2-byte) size word,\n");
printf(" 80 words (2-byte) containing 80 bits.\n");
printf("\n");
printf("Format for outputspeech_file:\n");
printf(" Synthesis is written to a binary file of 16 bits data.\n");
exit( 1 );
}
/* Open file for synthesis and packed serial stream */
if( (f_serial = fopen(argv[1],"rb") ) == NULL )
{
printf("%s - Error opening file %s !!\n", argv[0], argv[1]);
exit(0);
}
if( (f_syn = fopen(argv[2], "wb") ) == NULL )
{
printf("%s - Error opening file %s !!\n", argv[0], argv[2]);
exit(0);
}
printf("Input bitstream file : %s\n",argv[1]);
printf("Synthesis speech file : %s\n",argv[2]);
/*-----------------------------------------------------------------*
* Initialization of decoder *
*-----------------------------------------------------------------*/
for (i=0; i<M; i++) synth_buf[i] = (F)0.0;
synth = synth_buf + M;
bad_lsf = 0; /* Initialize bad LSF indicator */
init_decod_ld8a();
init_post_filter();
init_post_process();
/*-----------------------------------------------------------------*
* Loop for each "L_FRAME" speech data *
*-----------------------------------------------------------------*/
frame =0;
while( fread(serial, sizeof(INT16), SERIAL_SIZE, f_serial) == SERIAL_SIZE)
{
frame++;
printf(" Frame: %ld\r", frame);
bits2prm_ld8k( &serial[2], &parm[1]);
if (serial[0] == SYNC_WORD) {
parm[0] = 0; /* No frame erasure */
} else {
parm[0] = 1; /* frame erased */
}
parm[4] = check_parity_pitch(parm[3], parm[4] ); /* get parity check result */
decod_ld8a(parm, synth, Az_dec, T2); /* decoder */
post_filter(synth, Az_dec, T2); /* Post-filter */
post_process(synth, L_FRAME); /* Highpass filter */
fwrite16(synth, L_FRAME, f_syn);
}
return(0);
}
int main( int argc, char *argv[])
{
FLOAT synth_buf[L_FRAME+M]; /* Synthesis */
FLOAT *synth;
int parm[PRM_SIZE+1]; /* Synthesis parameters + BFI */
INT16 serial[SERIAL_SIZE]; /* Serial stream */
FLOAT Az_dec[2*MP1], *ptr_Az; /* Decoded Az for post-filter */
int t0_first;
FLOAT pst_out[L_FRAME]; /* postfilter output */
int voicing; /* voicing for previous subframe */
int sf_voic; /* voicing for subframe */
INT32 frame;
FILE *f_syn, *f_serial;
int i;
printf("\n");
printf("************** G.729 8 KBIT/S SPEECH DECODER ************\n");
printf("\n");
printf("----------------- Floating point C simulation ----------------\n");
printf("\n");
printf("------------ Version 1.01 (Release 2, November 2006) --------\n");
printf("\n");
/* Passed arguments */
if ( argc != 3)
{
printf("Usage :%s bitstream_file outputspeech_file\n",argv[0]);
printf("\n");
printf("Format for bitstream_file:\n");
printf(" One (2-byte) synchronization word \n");
printf(" One (2-byte) size word,\n");
printf(" 80 words (2-byte) containing 80 bits.\n");
printf("\n");
printf("Format for outputspeech_file:\n");
printf(" Synthesis is written to a binary file of 16 bits data.\n");
exit( 1 );
}
/* Open file for synthesis and packed serial stream */
if( (f_serial = fopen(argv[1],"rb") ) == NULL )
{
printf("%s - Error opening file %s !!\n", argv[0], argv[1]);
exit(0);
}
if( (f_syn = fopen(argv[2], "wb") ) == NULL )
{
printf("%s - Error opening file %s !!\n", argv[0], argv[2]);
exit(0);
}
printf("Input bitstream file : %s\n",argv[1]);
printf("Synthesis speech file : %s\n",argv[2]);
/*-----------------------------------------------------------------*
* Initialization of decoder *
*-----------------------------------------------------------------*/
for (i=0; i<M; i++) synth_buf[i] = (F)0.0;
synth = synth_buf + M;
init_decod_ld8k();
init_post_filter();
init_post_process();
voicing = 60;
/*-----------------------------------------------------------------*
* Loop for each "L_FRAME" speech data *
*-----------------------------------------------------------------*/
frame =0;
while( fread(serial, sizeof(INT16), SERIAL_SIZE, f_serial) == SERIAL_SIZE)
{
frame++;
printf(" Frame: %ld\r", frame);
bits2prm_ld8k( &serial[2], &parm[1]);
/* the hardware detects frame erasures by checking if all bits
are set to zero
*/
parm[0] = 0; /* No frame erasure */
for (i=2; i < SERIAL_SIZE; i++)
if (serial[i] == 0 ) parm[0] = 1; /* frame erased */
/* check parity and put 1 in parm[4] if parity error */
parm[4] = check_parity_pitch(parm[3], parm[4] );
decod_ld8k(parm, voicing, synth, Az_dec, &t0_first); /* Decoder */
/* Post-filter and decision on voicing parameter */
voicing = 0;
ptr_Az = Az_dec;
for(i=0; i<L_FRAME; i+=L_SUBFR) {
post(t0_first, &synth[i], ptr_Az, &pst_out[i], &sf_voic);
if (sf_voic != 0) { voicing = sf_voic;}
ptr_Az += MP1;
}
copy(&synth_buf[L_FRAME], &synth_buf[0], M);
post_process(pst_out, L_FRAME);
fwrite16(pst_out, L_FRAME, f_syn);
}
return(0);
}