static int codec_decoder(const struct PluginCodec_Definition *codec,
void *context,
const void *from,
unsigned *fromLen,
void *to, unsigned *toLen, unsigned int *flag)
{
Word16 i;
Word16 *synth;
Word16 parm[PRM_SIZE + 1];
DecState *decoder = (DecState *) context;
if (*fromLen < BYTES_PER_FRAME || *toLen < SAMPLES_PER_FRAME * 2)
return 0;
Restore_Params(from, &parm[1]);
synth = decoder->synth_buf + M;
parm[0] = 1;
for (i = 0; i < PRM_SIZE; i++) {
if (parm[i + 1] != 0) {
parm[0] = 0;
break;
}
}
parm[4] = Check_Parity_Pitch(parm[3], parm[4]);
Decod_ld8a(decoder, parm, synth, decoder->Az_dec, decoder->T2, &decoder->bad_lsf);
Post_Filter(decoder, synth, decoder->Az_dec, decoder->T2);
Post_Process(decoder, synth, L_FRAME);
for (i = 0; i < SAMPLES_PER_FRAME; i++)
((Word16 *) to)[i] = synth[i];
*fromLen = BYTES_PER_FRAME;
*toLen = SAMPLES_PER_FRAME * 2;
return 1;
}
void g729a_dec_process (void *decState, UWord8 *bitstream, Word16 *pcm,
Flag badFrame)
#endif
{
g729a_decode_frame_state *state = (g729a_decode_frame_state *)decState;
static Word16 bad_lsf = 0; /* Initialize bad LSF indicator */
Word16 parm[PRM_SIZE+1]; /* Synthesis parameters */
Word16 Az_dec[MP1*2]; /* Decoded Az for post-filter */
Word16 T2[2]; /* Pitch lag for 2 subframes */
bits2prm_ld8k( bitstream, &parm[1]);
parm[0] = badFrame ? 1 : 0; /* No frame erasure */
/* check pitch parity and put 1 in parm[4] if parity error */
parm[4] = Check_Parity_Pitch(parm[3], parm[4]);
Decod_ld8a(&state->decoderState, parm, state->synth, Az_dec, T2, bad_lsf);
Post_Filter(&state->postFilterState, state->synth, Az_dec, T2); /* Post-filter */
Post_Process(&state->postProcessState, state->synth, pcm, L_FRAME);
}
void G729aDecoder(Word16 serial[], Word16 speech[])
{
extern Word16 *synth; /* Synthesis */
Word16 parm[PRM_SIZE+1]; /* Synthesis parameters */
Word16 Az_dec[MP1*2]; /* Decoded Az for post-filter */
Word16 T2[2]; /* Pitch lag for 2 subframes */
Word16 i;
bits2prm_ld8k( &serial[2], &parm[1]);
parm[0] = 0;
for (i=2; i < SERIAL_SIZE; i++)
if (serial[i] == 0 ) parm[0] = 1;
parm[4] = Check_Parity_Pitch(parm[3], parm[4]);
Decod_ld8a(parm, synth, Az_dec, T2);
Post_Filter(synth, Az_dec, T2);
Post_Process(synth, L_FRAME);
for(i=0;i<L_FRAME;i++)
speech[i]=synth[i];
}
Word16 read_frame(FILE *f_serial, Word16 *parm)
{
Word16 i;
Word16 serial[SERIAL_SIZE]; /* Serial stream */
if(fread(serial, sizeof(short), 2, f_serial) != 2) {
return(0);
}
if(fread(&serial[2], sizeof(Word16), (size_t)serial[1], f_serial)
!= (size_t)serial[1]) {
return(0);
}
bits2prm_ld8k(&serial[1], parm);
/* This part was modified for version V1.3 */
/* for speech and SID frames, the hardware detects frame erasures
by checking if all bits are set to zero */
/* for untransmitted frames, the hardware detects frame erasures
by testing serial[0] */
parm[0] = 0; /* No frame erasure */
if(serial[1] != 0) {
for (i=0; i < serial[1]; i++)
if (serial[i+2] == 0 ) parm[0] = 1; /* frame erased */
}
else if(serial[0] != SYNC_WORD) parm[0] = 1;
if(parm[1] == 1) {
/* check parity and put 1 in parm[5] if parity error */
parm[5] = Check_Parity_Pitch(parm[4], parm[5]);
}
return(1);
}
int main(int argc, char *argv[] )
{
Word16 rate;
Word16 synth_buf[L_ANA_BWD], *synth; /* Synthesis */
Word16 parm[PRM_SIZE_E+2]; /* Synthesis parameters */
Word16 serial[SERIAL_SIZE_E]; /* Serial stream */
Word16 Az_dec[M_BWDP1*2], *ptr_Az; /* Decoded Az for post-filter */
Word16 T0_first; /* Pitch lag in 1st subframe */
Word16 pst_out[L_FRAME]; /* Postfilter output */
Word16 voicing; /* voicing from previous frame */
Word16 sf_voic; /* voicing for subframe */
Word16 i, frame = 0;
Word16 ga1_post, ga2_post, ga_harm;
Word16 long_h_st, m_pst;
Word16 serial_size;
Word16 bwd_dominant;
FILE *f_syn, *f_serial;
printf("\n");
printf("*************************************************************************\n");
printf("**** HIGHER BIT RATE EXTENSION OF ITU G.729 8 KBIT/S SPEECH DECODER ****\n");
printf("**** MIXED BACKWARD / FORWARD LPC STRUCTURE ****\n");
printf("*************************************************************************\n");
printf("\n");
printf("------------------- Fixed point C simulation -----------------\n");
printf("\n");
printf("--------- Version 1.3 (Release 2, November 2006) ---------\n");
printf("\n");
printf(" Bit rates : 8.0 kb/s (G729) or 11.8 kb/s\n");
printf("\n");
/* Passed arguments */
if ( argc != 3 ) {
printf("Usage : decoder bitstream_file output_file \n");
printf("\n");
printf("Format for bitstream_file:\n");
printf(" One (2-byte) synchronization word,\n");
printf(" One (2-byte) bit-rate word,\n");
printf("\n");
printf("Format for outputspeech_file:\n");
printf(" Output 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\n",argv[1]);
printf("Synthesis speech file : %s\n\n",argv[2]);
/*-----------------------------------------------------------------*
* Initialization of decoder *
*-----------------------------------------------------------------*/
for (i=0; i<L_ANA_BWD; i++) synth_buf[i] = 0;
synth = synth_buf + MEM_SYN_BWD;
Init_Decod_ld8e();
Init_Post_Filter();
Init_Post_Process();
voicing = 60;
ga1_post = GAMMA1_PST_E;
ga2_post = GAMMA2_PST_E;
ga_harm = GAMMA_HARM_E;
/*-----------------------------------------------------------------*
* Loop for each "L_FRAME" speech data *
*-----------------------------------------------------------------*/
while( fread(serial, sizeof(Word16), 2, f_serial) == 2) {
if(serial[0] != SYNC_WORD ) {
printf("error reading synchro word file %s frame %hd\n",
argv[1], frame);
exit(-1);
}
serial_size = serial[1];
if( (serial_size != 118) && (serial_size != 80) ){
printf("error uncorrect value of serial_size (%hd) in %s frame %hd\n",
serial_size, argv[1], frame);
exit(-1);
}
if (fread(&serial[2], sizeof(Word16), serial_size, f_serial) != (size_t)serial_size) {
printf("error reading file %s frame %hd\n",
argv[1], frame);
exit(-1);
}
frame++;
#if defined(__BORLANDC__)
printf("Frame : %4d\r", frame);
#endif
if(serial_size == 118) rate = 1;
else rate = 0;
bits2prm_ld8e(&serial[2], &parm[1], rate);
/* 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 */
if (parm[0] == 1) printf("Frame Erased : %d\n", frame);
if(rate == 0) {
parm[4] = Check_Parity_Pitch(parm[3], parm[4]);
}
else {
/* ------------------------------------------------------------------ */
/* check parity and put 1 in parm[5] if parity error in Forward mode */
/* put 1 in parm[3] if parity error in Backward mode */
/* ------------------------------------------------------------------ */
if (parm[1] == 0) {
i = shr(parm[4], 1);
i &= (Word16)1;
parm[5] = add(parm[5], i);
parm[5] = Check_Parity_Pitch(parm[4], parm[5]);
}
else {
i = shr(parm[2], 1);
i &= (Word16)1;
parm[3] = add(parm[3], i);
parm[3] = Check_Parity_Pitch(parm[2], parm[3]);
}
}
/* ---------- */
/* Decoding */
/* ---------- */
Decod_ld8e(parm, rate, voicing, synth_buf, Az_dec, &T0_first, &bwd_dominant,
&m_pst);
/* ---------- */
/* Postfilter */
/* ---------- */
voicing = 0;
ptr_Az = Az_dec;
/* Adaptive parameters for postfiltering */
/* ------------------------------------- */
if (serial_size == 80) {
long_h_st = LONG_H_ST;
ga1_post = GAMMA1_PST;
ga2_post = GAMMA2_PST;
ga_harm = GAMMA_HARM;
}
else {
long_h_st = LONG_H_ST_E;
/* If backward mode is dominant => progressively reduce postfiltering */
if ((parm[1] == 1) && (bwd_dominant == 1)) {
ga_harm = sub(ga_harm, 410);
if (ga_harm < 0) ga_harm = 0;
ga1_post = sub(ga1_post, 1147);
if (ga1_post < 0) ga1_post = 0;
ga2_post = sub(ga2_post, 1065);
if (ga2_post < 0) ga2_post = 0;
}
else {
ga_harm = add( ga_harm, 410);
if (ga_harm > GAMMA_HARM_E) ga_harm = GAMMA_HARM_E;
ga1_post = add(ga1_post, 1147);
if (ga1_post > GAMMA1_PST_E) ga1_post = GAMMA1_PST_E;
ga2_post = add(ga2_post, 1065);
if (ga2_post > GAMMA2_PST_E) ga2_post = GAMMA2_PST_E;
}
}
for(i=0; i<L_FRAME; i++) pst_out[i] = synth[i];
for(i=0; i<L_FRAME; i+=L_SUBFR) {
Poste(T0_first, &synth[i], ptr_Az, &pst_out[i], &sf_voic,
ga1_post, ga2_post, ga_harm, long_h_st, m_pst);
if (sf_voic != 0) voicing = sf_voic;
ptr_Az += m_pst+1;
}
#ifdef POSTPROC
Post_Process(pst_out, L_FRAME);
#else
for (i=0; i<L_FRAME; i++) pst_out[i] = shl(pst_out[i],1);
#endif
#ifdef HARDW
{
Word16 *my_pt;
Word16 my_temp;
int my_i;
my_pt = pst_out;
for(my_i=0; my_i < L_FRAME; my_i++) {
my_temp = *my_pt;
my_temp = add( my_temp, (Word16) 4); /* rounding on 13 bit */
my_temp = my_temp & 0xFFF8; /* mask on 13 bit */
*my_pt++ = my_temp;
}
}
#endif
fwrite(pst_out, sizeof(Word16), L_FRAME, f_syn);
}
printf("\n");
return(0);
}
//#if 0
int main(int argc, char *argv[] )
{
Word16 synth_buf[L_FRAME+M], *synth; /* Synthesis */
Word16 parm[PRM_SIZE+1]; /* Synthesis parameters */
Word16 serial[SERIAL_SIZE]; /* Serial stream */
Word16 Az_dec[MP1*2]; /* Decoded Az for post-filter */
Word16 T2[2]; /* Pitch lag for 2 subframes */
Word16 i, frame;
FILE *f_syn, *f_serial;
printf("\n");
printf("************ G.729a 8.0 KBIT/S SPEECH DECODER ************\n");
printf("\n");
printf("------------------- Fixed point C simulation ----------------\n");
printf("\n");
printf("----------------- Version 1.1 ---------------\n");
printf("\n");
/* Passed arguments */
argc = 3;
strcpy(argv[1],"test.bit");
strcpy(argv[2],"test.dec");
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] = 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;
/* c code */
while( fread(serial, sizeof(Word16), SERIAL_SIZE, f_serial) == SERIAL_SIZE)
{
//printf("Frame =%d\n", frame++);
printf("Frame =%d \n", frame);
frame = frame + 1;
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 pitch parity and put 1 in parm[4] if parity error */
parm[4] = Check_Parity_Pitch(parm[3], parm[4]);
Decod_ld8a(parm, synth, Az_dec, T2);
Post_Filter(synth, Az_dec, T2); /* Post-filter */
Post_Process(synth, L_FRAME);
fwrite(synth, sizeof(short), L_FRAME, f_syn);
}
return(0);
}
int main(int argc, char *argv[] )
{
Word16 synth_buf[L_FRAME+M], *synth; /* Synthesis */
Word16 parm[PRM_SIZE+1]; /* Synthesis parameters */
Word16 serial[SERIAL_SIZE]; /* Serial stream */
Word16 Az_dec[MP1*2], *ptr_Az; /* Decoded Az for post-filter */
Word16 T0_first; /* Pitch lag in 1st subframe */
Word16 pst_out[L_FRAME]; /* Postfilter output */
Word16 voicing; /* voicing from previous frame */
Word16 sf_voic; /* voicing for subframe */
Word16 i, frame;
FILE *f_syn, *f_serial;
printf("\n");
printf("*********** ITU G.729 8 KBIT/S SPEECH CODER ***********\n");
printf("\n");
printf("------------------- Fixed point C simulation -----------------\n");
printf("\n");
printf("----------------- Version 3.3 ----------------\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(" Output 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] = 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(Word16), SERIAL_SIZE, f_serial) == SERIAL_SIZE)
{
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);
/* Postfilter */
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);
#ifdef HARDW
{
Word16 *my_pt;
Word16 my_temp;
int my_i;
my_pt = pst_out;
for(my_i=0; my_i < L_FRAME; my_i++) {
my_temp = *my_pt;
my_temp = add( my_temp, (Word16) 4); /* rounding on 13 bit */
my_temp = my_temp & 0xFFF8; /* mask on 13 bit */
*my_pt++ = my_temp;
}
}
#endif
fwrite(pst_out, sizeof(Word16), L_FRAME, f_syn);
frame++;
printf("Frame =%d\r", frame);
}
return(0);
}
static tsk_size_t tdav_codec_g729ab_decode(tmedia_codec_t* self, const void* in_data, tsk_size_t in_size, void** out_data, tsk_size_t* out_max_size, const tsk_object_t* proto_hdr)
{
tsk_size_t out_size = 0;
int i, frame_count;
const uint8_t* data_start = (const uint8_t*)in_data;
const uint8_t* data_end;
tdav_codec_g729ab_t* g729a = (tdav_codec_g729ab_t*)self;
if(!self || !in_data || !in_size || !out_data || ((in_size % 10) && (in_size % 10 != 2))){
TSK_DEBUG_ERROR("Invalid parameter");
return 0;
}
data_end = (data_start + in_size);
frame_count = (in_size/10) + ((in_size % 10) ? 1 : 0);
out_size = 160*frame_count;
/* allocate new buffer if needed */
if(*out_max_size <out_size){
if(!(*out_data = tsk_realloc(*out_data, out_size))){
TSK_DEBUG_ERROR("Failed to allocate new buffer");
*out_max_size = 0;
return 0;
}
*out_max_size = out_size;
}
for(i=0; i<frame_count; i++){
memset(g729a->decoder.synth_buf, 0, M);
g729a->decoder.synth = g729a->decoder.synth_buf + M;
if((data_end - data_start) == 2){
unpack_SID(data_start, g729a->decoder.serial);
data_start += 2;
}
else{
unpack_G729(data_start, g729a->decoder.serial, 10);
data_start += 10;
}
bits2prm_ld8k(&g729a->decoder.serial[1], g729a->decoder.parm);
/* This part was modified for version V1.3 */
/* for speech and SID frames, the hardware detects frame erasures
by checking if all bits are set to zero */
/* for untransmitted frames, the hardware detects frame erasures
by testing serial[0] */
g729a->decoder.parm[0] = 0; /* No frame erasure */
if(g729a->decoder.serial[1] != 0) {
int j;
for (j=0; j < g729a->decoder.serial[1]; j++){
if (g729a->decoder.serial[j+2] == 0){
g729a->decoder.parm[0] = 1; /* frame erased */
break;
}
}
}
else if(g729a->decoder.serial[0] != SYNC_WORD){
g729a->decoder.parm[0] = 1;
}
if(g729a->decoder.parm[1] == 1) {
/* check parity and put 1 in parm[5] if parity error */
g729a->decoder.parm[5] = Check_Parity_Pitch(g729a->decoder.parm[4], g729a->decoder.parm[5]);
}
Decod_ld8a(g729a->decoder.parm, g729a->decoder.synth, g729a->decoder.Az_dec, g729a->decoder.T2, &g729a->decoder.Vad);
Post_Filter(g729a->decoder.synth, g729a->decoder.Az_dec, g729a->decoder.T2, g729a->decoder.Vad); /* Post-filter */
Post_Process(g729a->decoder.synth, L_FRAME);
memcpy(&((uint8_t*)*out_data)[160*i], g729a->decoder.synth, 160);
}
return out_size;
}