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-rw-r--r--src/libac3/coeff.c524
1 files changed, 212 insertions, 312 deletions
diff --git a/src/libac3/coeff.c b/src/libac3/coeff.c
index 6c95f74a5..2913c18d4 100644
--- a/src/libac3/coeff.c
+++ b/src/libac3/coeff.c
@@ -21,9 +21,6 @@
*
*/
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
#include <stdlib.h>
#include <stdio.h>
@@ -31,6 +28,7 @@
#include "ac3_internal.h"
+#include "decode.h"
#include "bitstream.h"
#include "dither.h"
#include "coeff.h"
@@ -38,169 +36,37 @@
//
//Lookup tables of 0.15 two's complement quantization values
//
-#define Q0 ((-2 << 15) / 3.0)
-#define Q1 (0)
-#define Q2 ((2 << 15) / 3.0)
-
-static const float q_1_0[ 32 ] =
+static const uint16_t q_1[3] =
{
- Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,
- Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,
- Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,
- 0,0,0,0,0
-};
+ ( -2 << 15)/3, 0,( 2 << 15)/3
+};
-static const float q_1_1[ 32 ] =
+static const uint16_t q_2[5] =
{
- Q0,Q0,Q0,Q1,Q1,Q1,Q2,Q2,Q2,
- Q0,Q0,Q0,Q1,Q1,Q1,Q2,Q2,Q2,
- Q0,Q0,Q0,Q1,Q1,Q1,Q2,Q2,Q2,
- 0,0,0,0,0
-};
+ ( -4 << 15)/5,( -2 << 15)/5, 0,
+ ( 2 << 15)/5,( 4 << 15)/5
+};
-static const float q_1_2[ 32 ] =
-{
- Q0,Q1,Q2,Q0,Q1,Q2,Q0,Q1,Q2,
- Q0,Q1,Q2,Q0,Q1,Q2,Q0,Q1,Q2,
- Q0,Q1,Q2,Q0,Q1,Q2,Q0,Q1,Q2,
- 0,0,0,0,0
-};
-
-#undef Q0
-#undef Q1
-#undef Q2
-
-#define Q0 ((-4 << 15) / 5.0)
-#define Q1 ((-2 << 15) / 5.0)
-#define Q2 (0)
-#define Q3 ((2 << 15) / 5.0)
-#define Q4 ((4 << 15) / 5.0)
-
-static const float q_2_0[ 128 ] =
-{
- Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,
- Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,
- Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,
- Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,
- Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,
- Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,
- Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,
- Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,
- Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,
- Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,
- 0,0,0
-};
-
-static const float q_2_1[ 128 ] =
-{
- Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,
- Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,
- Q4,Q4,Q4,Q4,Q4,Q0,Q0,Q0,Q0,Q0,
- Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,
- Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
- Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,
- Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,
- Q4,Q4,Q4,Q4,Q4,Q0,Q0,Q0,Q0,Q0,
- Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,
- Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
- Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,
- Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,
- Q4,Q4,Q4,Q4,Q4,0,0,0
- };
-
-static const float q_2_2[ 128 ] =
- {
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,0,0,0
-};
-
-#undef Q0
-#undef Q1
-#undef Q2
-#undef Q3
-#undef Q4
-
-static const float q_3[7] =
+static const uint16_t q_3[7] =
{
- (-6 << 15)/7.0, (-4 << 15)/7.0, (-2 << 15)/7.0, 0.0,
- ( 2 << 15)/7.0, ( 4 << 15)/7.0, ( 6 << 15)/7.0
+ ( -6 << 15)/7,( -4 << 15)/7,( -2 << 15)/7, 0,
+ ( 2 << 15)/7,( 4 << 15)/7,( 6 << 15)/7
};
-#define Q0 ((-10 << 15) / 11.0)
-#define Q1 ((-8 << 15) / 11.0)
-#define Q2 ((-6 << 15) / 11.0)
-#define Q3 ((-4 << 15) / 11.0)
-#define Q4 ((-2 << 15) / 11.0)
-#define Q5 (0)
-#define Q6 ((2 << 15) / 11.0)
-#define Q7 ((4 << 15) / 11.0)
-#define Q8 ((6 << 15) / 11.0)
-#define Q9 ((8 << 15) / 11.0)
-#define QA ((10 << 15) / 11.0)
-
-static const float q_4_0[ 128 ] =
+static const uint16_t q_4[11] =
{
- Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0,
- Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1,
- Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2,
- Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3,
- Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4,
- Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5,
- Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6,
- Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7,
- Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8,
- Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9,
- QA, QA, QA, QA, QA, QA, QA, QA, QA, QA, QA,
- 0, 0, 0, 0, 0, 0, 0
- };
-
-static const float q_4_1[ 128 ] =
-{
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- 0, 0, 0, 0, 0, 0, 0
+ (-10 << 15)/11,(-8 << 15)/11,(-6 << 15)/11, ( -4 << 15)/11,(-2 << 15)/11, 0,
+ ( 2 << 15)/11,( 4 << 15)/11,( 6 << 15)/11, ( 8 << 15)/11,(10 << 15)/11
};
-#undef Q0
-#undef Q1
-#undef Q2
-#undef Q3
-#undef Q4
-#undef Q5
-#undef Q6
-#undef Q7
-#undef Q8
-#undef Q9
-#undef QA
-
-static const float q_5[15] =
+static const uint16_t q_5[15] =
{
- (-14 << 15)/15.0,(-12 << 15)/15.0,(-10 << 15)/15.0,
- ( -8 << 15)/15.0,( -6 << 15)/15.0,( -4 << 15)/15.0,
- ( -2 << 15)/15.0, 0.0 ,( 2 << 15)/15.0,
- ( 4 << 15)/15.0,( 6 << 15)/15.0,( 8 << 15)/15.0,
- ( 10 << 15)/15.0,( 12 << 15)/15.0,( 14 << 15)/15.0
-};
+ (-14 << 15)/15,(-12 << 15)/15,(-10 << 15)/15,
+ ( -8 << 15)/15,( -6 << 15)/15,( -4 << 15)/15,
+ ( -2 << 15)/15, 0 ,( 2 << 15)/15,
+ ( 4 << 15)/15,( 6 << 15)/15,( 8 << 15)/15,
+ ( 10 << 15)/15,( 12 << 15)/15,( 14 << 15)/15
+};
//
// Scale factors for convert_to_float
@@ -238,200 +104,234 @@ static const uint32_t u32_scale_factors[25] =
static float *scale_factor = (float*)u32_scale_factors;
//These store the persistent state of the packed mantissas
-static float q_1[2];
-static float q_2[2];
-static float q_4[1];
-static int32_t q_1_pointer;
-static int32_t q_2_pointer;
-static int32_t q_4_pointer;
-static float __inline__
-coeff_get_float(uint16_t bap, uint16_t dithflag, uint16_t exp);
+static uint16_t m_1[3];
+static uint16_t m_2[3];
+static uint16_t m_4[2];
+static uint16_t m_1_pointer;
+static uint16_t m_2_pointer;
+static uint16_t m_4_pointer;
//Conversion from bap to number of bits in the mantissas
//zeros account for cases 0,1,2,4 which are special cased
-static uint16_t qnttztab[16] =
-{
- 0, 0, 0, 3,
- 0, 4, 5, 6,
- 7, 8, 9, 10,
- 11, 12, 14, 16
-};
+static uint16_t qnttztab[16] = { 0, 0, 0, 3, 0 , 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16};
-static void coeff_reset(void);
-static float coeff_get_float(uint16_t bap, uint16_t dithflag, uint16_t exp);
-static void coeff_uncouple_ch(float samples[],bsi_t *bsi,audblk_t *audblk,uint32_t ch);
+static void coeff_reset(void);
+static int16_t coeff_get_mantissa(uint16_t bap, uint16_t dithflag);
+static void coeff_uncouple_ch(float samples[],ac3_state_t *state,audblk_t *audblk,uint32_t ch);
-void coeff_unpack(bsi_t *bsi, audblk_t *audblk, stream_samples_t samples)
+//
+// Convert a 0.15 fixed point number into IEEE single
+// precision floating point and scale by 2^-exp
+//
+static inline float
+convert_to_float(uint16_t exp, int16_t mantissa)
{
- uint16_t i,j;
- uint32_t done_cpl = 0;
-
- coeff_reset();
-
- for(i=0; i< bsi->nfchans; i++) {
- for(j=0; j < audblk->endmant[i]; j++)
- samples[i][j] = coeff_get_float(audblk->fbw_bap[i][j], audblk->dithflag[i], audblk->fbw_exp[i][j]);
-
- if(audblk->cplinu && audblk->chincpl[i] && !(done_cpl)) {
- // ncplmant is equal to 12 * ncplsubnd
- // Don't dither coupling channel until channel
- // separation so that interchannel noise is uncorrelated
- for(j=audblk->cplstrtmant; j < audblk->cplendmant; j++)
- audblk->cpl_flt[j] = coeff_get_float(audblk->cpl_bap[j],0, audblk->cpl_exp[j]);
- done_cpl = 1;
- }
- }
-
- //uncouple the channel if necessary
- if(audblk->cplinu) {
- for(i=0; i< bsi->nfchans; i++) {
- if(audblk->chincpl[i])
- coeff_uncouple_ch(samples[i],bsi,audblk,i);
- }
+ float x;
- }
+ //the scale by 2^-15 is built into the scale factor table
+ x = mantissa * scale_factor[exp];
- if(bsi->lfeon) {
- // There are always 7 mantissas for lfe, no dither for lfe
- for(j=0; j < 7 ; j++)
- samples[5][j] = coeff_get_float(audblk->lfe_bap[j], 0, audblk->lfe_exp[j]);
- }
+ return x;
}
-
-/**
- * Fetch a float from the bitstream
- **/
-
-static float inline coeff_get_float (uint16_t bap, uint16_t dithflag, uint16_t exp)
+void
+coeff_unpack(ac3_state_t *state, audblk_t *audblk, stream_samples_t samples)
{
- uint16_t dummy = 0;
+ uint16_t i,j;
+ uint32_t done_cpl = 0;
+ int16_t mantissa;
- //If the bap is 0-5 then we have special cases to take care of
- switch(bap) {
- case 0:
- if(dithflag)
- return (dither_gen() * scale_factor[exp]);
- return 0.0;
+ coeff_reset();
- case 1:
- if (q_1_pointer >= 0)
- return(q_1[q_1_pointer--] * scale_factor[exp]);
+ for(i=0; i< state->nfchans; i++) {
+ for(j=0; j < audblk->endmant[i]; j++) {
+ mantissa = coeff_get_mantissa(audblk->fbw_bap[i][j],audblk->dithflag[i]);
+ samples[i][j] = convert_to_float(audblk->fbw_exp[i][j],mantissa);
+ }
- if ((dummy = bitstream_get (5)) > 26)
- goto error;
+ if(audblk->cplinu && audblk->chincpl[i] && !(done_cpl)) {
+ // ncplmant is equal to 12 * ncplsubnd
+ // Don't dither coupling channel until channel separation so that
+ // interchannel noise is uncorrelated
+ for(j=audblk->cplstrtmant; j < audblk->cplendmant; j++)
+ audblk->cplmant[j] = coeff_get_mantissa(audblk->cpl_bap[j],0);
+ done_cpl = 1;
+ }
+ }
- q_1[1] = q_1_1[dummy];
- q_1[0] = q_1_2[dummy];
- q_1_pointer = 1;
+ //uncouple the channel if necessary
+ if(audblk->cplinu) {
+ for(i=0; i< state->nfchans; i++) {
+ if(audblk->chincpl[i])
+ coeff_uncouple_ch(samples[i],state,audblk,i);
+ }
+ }
- return (q_1_0[dummy] * scale_factor[exp]);
+ if(state->lfeon) {
+ // There are always 7 mantissas for lfe, no dither for lfe
+ for(j=0; j < 7 ; j++) {
+ mantissa = coeff_get_mantissa(audblk->lfe_bap[j],0);
+ samples[5][j] = convert_to_float(audblk->lfe_exp[j],mantissa);
+ }
+ }
+}
- case 2:
- if(q_2_pointer >= 0)
- return (q_2[q_2_pointer--] * scale_factor[exp]);
+//
+//Fetch a mantissa from the bitstream
+//
+//The mantissa returned is a signed 0.15 fixed point number
+//
+static int16_t
+coeff_get_mantissa(uint16_t bap, uint16_t dithflag)
+{
+ uint16_t mantissa;
+ uint16_t group_code;
+
+ //If the bap is 0-5 then we have special cases to take care of
+ switch(bap) {
+ case 0:
+ if(dithflag)
+ mantissa = dither_gen();
+ else
+ mantissa = 0;
+ break;
+
+ case 1:
+ if(m_1_pointer > 2) {
+ group_code = bitstream_get(5);
+
+ if(group_code > 26)
+ goto error;
+
+ m_1[0] = group_code / 9;
+ m_1[1] = (group_code % 9) / 3;
+ m_1[2] = (group_code % 9) % 3;
+ m_1_pointer = 0;
+ }
+ mantissa = m_1[m_1_pointer++];
+ mantissa = q_1[mantissa];
+ break;
+ case 2:
+
+ if(m_2_pointer > 2) {
+ group_code = bitstream_get(7);
+
+ if(group_code > 124)
+ goto error;
+
+ m_2[0] = group_code / 25;
+ m_2[1] = (group_code % 25) / 5 ;
+ m_2[2] = (group_code % 25) % 5 ;
+ m_2_pointer = 0;
+ }
+ mantissa = m_2[m_2_pointer++];
+ mantissa = q_2[mantissa];
+ break;
- if ((dummy = bitstream_get (7)) > 124)
- goto error;
+ case 3:
+ mantissa = bitstream_get(3);
- q_2[1] = q_2_1[dummy];
- q_2[0] = q_2_2[dummy];
- q_2_pointer = 1;
+ if(mantissa > 6)
+ goto error;
- return (q_2_0[dummy] * scale_factor[exp]);
+ mantissa = q_3[mantissa];
+ break;
- case 3:
- if ((dummy = bitstream_get (3)) > 6)
- goto error;
+ case 4:
+ if(m_4_pointer > 1) {
+ group_code = bitstream_get(7);
- return (q_3[dummy] * scale_factor[exp]);
+ if(group_code > 120)
+ goto error;
- case 4:
- if(q_4_pointer >= 0)
- return (q_4[q_4_pointer--] * scale_factor[exp]);
+ m_4[0] = group_code / 11;
+ m_4[1] = group_code % 11;
+ m_4_pointer = 0;
+ }
+ mantissa = m_4[m_4_pointer++];
+ mantissa = q_4[mantissa];
+ break;
- if ((dummy = bitstream_get (7)) > 120)
- goto error;
+ case 5:
+ mantissa = bitstream_get(4);
- q_4[0] = q_4_1[dummy];
- q_4_pointer = 0;
+ if(mantissa > 14)
+ goto error;
- return (q_4_0[dummy] * scale_factor[exp]);
+ mantissa = q_5[mantissa];
+ break;
- case 5:
- if ((dummy = bitstream_get (4)) > 14)
- goto error;
+ default:
+ mantissa = bitstream_get(qnttztab[bap]);
+ mantissa <<= 16 - qnttztab[bap];
+ }
- return (q_5[dummy] * scale_factor[exp]);
+ return mantissa;
- default:
- dummy = bitstream_get(qnttztab[bap]);
- dummy <<= 16 - qnttztab[bap];
- return ((int16_t)dummy * scale_factor[exp]);
- }
-error:
-#ifdef FAST_ERROR
- HANDLE_ERROR ();
-#else
- if(!error_flag)
- fprintf(stderr,"** Invalid mantissa - skipping frame **\n");
- error_flag = 1;
-
- return 0.0;
-#endif
-}
+error:
+ if(!error_flag)
+ fprintf(stderr,"** Invalid mantissa - skipping frame **\n");
+ error_flag = 1;
-/**
- * Reset the mantissa state
- **/
+ return 0;
+}
-static void coeff_reset(void)
+//
+// Reset the mantissa state
+//
+static void
+coeff_reset(void)
{
- q_1_pointer = q_2_pointer = q_4_pointer = -1;
+ m_1[2] = m_1[1] = m_1[0] = 0;
+ m_2[2] = m_2[1] = m_2[0] = 0;
+ m_4[1] = m_4[0] = 0;
+ m_1_pointer = m_2_pointer = m_4_pointer = 3;
}
+//
+// Uncouple the coupling channel into a fbw channel
+//
+static void
+coeff_uncouple_ch(float samples[],ac3_state_t *state,audblk_t *audblk,uint32_t ch)
+{
+ uint32_t bnd = 0;
+ uint32_t sub_bnd = 0;
+ uint32_t i,j;
+ float cpl_coord = 1.0;
+ uint32_t cpl_exp_tmp;
+ uint32_t cpl_mant_tmp;
+ int16_t mantissa;
+
+ for(i=audblk->cplstrtmant;i<audblk->cplendmant;) {
+ if(!audblk->cplbndstrc[sub_bnd++]) {
+ cpl_exp_tmp = audblk->cplcoexp[ch][bnd] + 3 * audblk->mstrcplco[ch];
+ if(audblk->cplcoexp[ch][bnd] == 15)
+ cpl_mant_tmp = (audblk->cplcomant[ch][bnd]) << 11;
+ else
+ cpl_mant_tmp = ((0x10) | audblk->cplcomant[ch][bnd]) << 10;
+
+ cpl_coord = convert_to_float(cpl_exp_tmp,cpl_mant_tmp) * 8.0f;
+
+ //Invert the phase for the right channel if necessary
+ if(state->acmod == 0x2 && audblk->phsflginu && ch == 1 && audblk->phsflg[bnd])
+ cpl_coord *= -1;
+
+ bnd++;
+ }
+
+ for(j=0;j < 12; j++) {
+ //Get new dither values for each channel if necessary, so
+ //the channels are uncorrelated
+ if(audblk->dithflag[ch] && audblk->cpl_bap[i] == 0)
+ mantissa = dither_gen();
+ else
+ mantissa = audblk->cplmant[i];
-/**
- * Uncouple the coupling channel into a fbw channel
- **/
+ samples[i] = cpl_coord * convert_to_float(audblk->cpl_exp[i],mantissa);
-static void coeff_uncouple_ch (float samples[],bsi_t *bsi,audblk_t *audblk,uint32_t ch)
-{
- uint32_t bnd = 0;
- uint32_t sub_bnd = 0;
- uint32_t i,j;
- float cpl_coord = 1.0;
- uint32_t cpl_exp_tmp;
- uint32_t cpl_mant_tmp;
-
- for (i=audblk->cplstrtmant;i<audblk->cplendmant;) {
- if (!audblk->cplbndstrc[sub_bnd++]) {
- cpl_exp_tmp = audblk->cplcoexp[ch][bnd] + 3 * audblk->mstrcplco[ch];
- if (audblk->cplcoexp[ch][bnd] == 15)
- cpl_mant_tmp = (audblk->cplcomant[ch][bnd]) << 11;
- else
- cpl_mant_tmp = ((0x10) | audblk->cplcomant[ch][bnd]) << 10;
-
- cpl_coord = (cpl_mant_tmp * scale_factor[cpl_exp_tmp]) * 8.0f;
-
- //Invert the phase for the right channel if necessary
- if(bsi->acmod == 0x2 && audblk->phsflginu && ch == 1 && audblk->phsflg[bnd])
- cpl_coord *= -1;
-
- bnd++;
- }
-
- for(j=0;j < 12; j++) {
- // Get new dither values for each channel if necessary,
- // so the channels are uncorrelated
- if(audblk->dithflag[ch] && !audblk->cpl_bap[i])
- samples[i] = cpl_coord * (dither_gen() * scale_factor[audblk->cpl_exp[i]]);
- else
- samples[i] = cpl_coord * audblk->cpl_flt[i];
-
- i++;
- }
+ i++;
}
+ }
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-27 22:00:02 +0000