/*
*****************************************************************************
* PUBLIC PROGRAM CODE
*****************************************************************************
*/
int cbsearch(Word16 x[], /* i : target vector, Q0 */
Word16 h[], /* i : impulse response of weighted synthesis */
/* filter h[-L_subfr..-1] must be set to */
/* zero. Q12 */
Word16 T0, /* i : Pitch lag */
Word16 pitch_sharp, /* i : Last quantized pitch gain, Q14 */
Word16 gain_pit, /* i : Pitch gain, Q14 */
Word16 res2[], /* i : Long term prediction residual, Q0 */
Word16 code[], /* o : Innovative codebook, Q13 */
Word16 y[], /* o : filtered fixed codebook excitation, Q12 */
Word16 **anap, /* o : Signs of the pulses */
enum Mode mode,/* i : coder mode */
Word16 subNr) /* i : subframe number */
{
Word16 index;
Word16 i, temp, pit_sharpTmp;
/* For MR74, the pre and post CB pitch sharpening is included in the
* codebook search routine, while for MR122 is it not.
*/
if ((sub (mode, MR475) == 0) || (sub (mode, MR515) == 0))
{ /* MR475, MR515 */
*(*anap)++ = code_2i40_9bits(subNr, x, h, T0, pitch_sharp,
code, y, &index);
*(*anap)++ = index; /* sign index */
}
else if (sub (mode, MR59) == 0)
{ /* MR59 */
*(*anap)++ = code_2i40_11bits(x, h, T0, pitch_sharp, code, y, &index);
*(*anap)++ = index; /* sign index */
}
else if (sub (mode, MR67) == 0)
{ /* MR67 */
*(*anap)++ = code_3i40_14bits(x, h, T0, pitch_sharp, code, y, &index);
*(*anap)++ = index; /* sign index */
}
else if (sub (mode, MR74) == 0 || sub (mode, MR795) == 0)
{ /* MR74, MR795 */
*(*anap)++ = code_4i40_17bits(x, h, T0, pitch_sharp, code, y, &index);
*(*anap)++ = index; /* sign index */
}
else if (sub (mode, MR102) == 0)
{ /* MR102 */
/*-------------------------------------------------------------*
* - include pitch contribution into impulse resp. h1[] *
*-------------------------------------------------------------*/
/* pit_sharpTmp = pit_sharp; */
/* if (pit_sharpTmp > 1.0) pit_sharpTmp = 1.0; */
pit_sharpTmp = shl (pitch_sharp, 1);
for (i = T0; i < L_SUBFR; i++)
{
temp = mult(h[i - T0], pit_sharpTmp);
h[i] = add(h[i], temp);
}
/*--------------------------------------------------------------*
* - Innovative codebook search (find index and gain) *
*--------------------------------------------------------------*/
code_8i40_31bits (x, res2, h, code, y, *anap);
*anap += 7; add(0,0);
/*-------------------------------------------------------*
* - Add the pitch contribution to code[]. *
*-------------------------------------------------------*/
for (i = T0; i < L_SUBFR; i++)
{
temp = mult (code[i - T0], pit_sharpTmp);
code[i] = add (code[i], temp);
}
}
else
{ /* MR122 */
/*-------------------------------------------------------------*
* - include pitch contribution into impulse resp. h1[] *
*-------------------------------------------------------------*/
/* pit_sharpTmp = gain_pit; */
/* if (pit_sharpTmp > 1.0) pit_sharpTmp = 1.0; */
pit_sharpTmp = shl (gain_pit, 1);
for (i = T0; i < L_SUBFR; i++)
{
temp = mult(h[i - T0], pit_sharpTmp);
h[i] = add(h[i], temp);
}
/*--------------------------------------------------------------*
* - Innovative codebook search (find index and gain) *
*--------------------------------------------------------------*/
code_10i40_35bits (x, res2, h, code, y, *anap);
*anap += 10; add(0,0);
/*-------------------------------------------------------*
* - Add the pitch contribution to code[]. *
*-------------------------------------------------------*/
for (i = T0; i < L_SUBFR; i++)
{
temp = mult (code[i - T0], pit_sharpTmp);
code[i] = add (code[i], temp);
}
}
return 0;
}
void cbsearch(Word16 x[], /* i : target vector, Q0 */
Word16 h[], /* i : impulse response of weighted synthesis*/
/* filter h[-L_subfr..-1] must be set to */
/* zero. Q12 */
Word16 T0, /* i : Pitch lag */
Word16 pitch_sharp,/* i : Last quantized pitch gain, Q14 */
Word16 gain_pit, /* i : Pitch gain, Q14 */
Word16 res2[], /* i : Long term prediction residual, Q0 */
Word16 code[], /* o : Innovative codebook, Q13 */
Word16 y[], /* o : filtered fixed codebook excitation */
/* Q12 */
Word16 **anap, /* o : Signs of the pulses */
enum Mode mode, /* i : coder mode */
Word16 subNr, /* i : subframe number */
CommonAmrTbls* common_amr_tbls, /* ptr to struct of tables */
Flag *pOverflow) /* o : Flag set when overflow occurs */
{
Word16 index;
Word16 i;
Word16 temp;
Word16 pit_sharpTmp;
/* For MR74, the pre and post CB pitch sharpening is included in the
* codebook search routine, while for MR122 is it not.
*/
if ((mode == MR475) || (mode == MR515))
{
/* MR475, MR515 */
*(*anap)++ =
code_2i40_9bits(
subNr,
x,
h,
T0,
pitch_sharp,
code,
y,
&index,
common_amr_tbls->startPos_ptr,
pOverflow);
*(*anap)++ = index; /* sign index */
}
else if (mode == MR59)
{ /* MR59 */
*(*anap)++ =
code_2i40_11bits(
x,
h,
T0,
pitch_sharp,
code,
y,
&index,
pOverflow);
*(*anap)++ = index; /* sign index */
}
else if (mode == MR67)
{ /* MR67 */
*(*anap)++ =
code_3i40_14bits(
x,
h,
T0,
pitch_sharp,
code,
y,
&index,
pOverflow);
*(*anap)++ = index; /* sign index */
}
else if ((mode == MR74) || (mode == MR795))
{ /* MR74, MR795 */
*(*anap)++ =
code_4i40_17bits(
x,
h,
T0,
pitch_sharp,
code,
y,
&index,
common_amr_tbls->gray_ptr,
pOverflow);
*(*anap)++ = index; /* sign index */
}
else if (mode == MR102)
{ /* MR102 */
/*-------------------------------------------------------------*
* - include pitch contribution into impulse resp. h1[] *
*-------------------------------------------------------------*/
/* pit_sharpTmp = pit_sharp; */
/* if (pit_sharpTmp > 1.0) pit_sharpTmp = 1.0; */
pit_sharpTmp =
shl(
pitch_sharp,
1,
pOverflow);
for (i = T0; i < L_SUBFR; i++)
{
temp =
mult(
h[i - T0],
pit_sharpTmp,
pOverflow);
h[i] =
add_16(
h[i],
temp,
pOverflow);
}
/*--------------------------------------------------------------*
* - Innovative codebook search (find index and gain) *
*--------------------------------------------------------------*/
code_8i40_31bits(
x,
res2,
h,
code,
y,
*anap,
pOverflow);
*anap += 7;
/*-------------------------------------------------------*
* - Add the pitch contribution to code[]. *
*-------------------------------------------------------*/
for (i = T0; i < L_SUBFR; i++)
{
temp =
mult(
code[i - T0],
pit_sharpTmp,
pOverflow);
code[i] =
add_16(
code[i],
temp,
pOverflow);
}
}
else
{ /* MR122 */
/*-------------------------------------------------------------*
* - include pitch contribution into impulse resp. h1[] *
*-------------------------------------------------------------*/
/* pit_sharpTmp = gain_pit; */
/* if (pit_sharpTmp > 1.0) pit_sharpTmp = 1.0; */
pit_sharpTmp = shl(gain_pit, 1, pOverflow);
for (i = T0; i < L_SUBFR; i++)
{
temp = ((Word32)h[i - T0] * pit_sharpTmp) >> 15;
/*
mult(
h[i - T0],
,
pOverflow);
*/
h[i] =
add_16(
h[i],
temp,
pOverflow);
}
/*--------------------------------------------------------------*
* - Innovative codebook search (find index and gain) *
*--------------------------------------------------------------*/
code_10i40_35bits(
x,
res2,
h,
code,
y,
*anap,
common_amr_tbls->gray_ptr,
pOverflow);
*anap += 10;
/*-------------------------------------------------------*
* - Add the pitch contribution to code[]. *
*-------------------------------------------------------*/
for (i = T0; i < L_SUBFR; i++)
{
temp =
mult(
code[i - T0],
pit_sharpTmp,
pOverflow);
code[i] =
add_16(
code[i],
temp,
pOverflow);
}
}
}