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A bunch of tweaks to the G.722.1 codec

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This commit is contained in:
Steve Underwood
2010-12-26 13:25:03 +08:00
parent d24af1e1c2
commit 5d5485708d
48 changed files with 1402 additions and 1189 deletions
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26
libs/libg722_1/src/make_tables.c
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@@ -6,14 +6,12 @@
* Adapted by Steve Underwood <steveu@coppice.org> from the reference
* code supplied with ITU G.722.1, which is:
*
* <EFBFBD> 2004 Polycom, Inc.
* (C) 2004 Polycom, Inc.
* All rights reserved.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id: make_tables.c,v 1.5 2008/11/21 15:30:22 steveu Exp $
*/
/*! \file */
@@ -37,6 +35,7 @@
#undef PI
#endif
#define PI 3.141592653589793238462
/* These may have been defined in the main header for the codec, so we clear out
any pre-existing definitions here. */
#if defined(ENCODER_SCALE_FACTOR)
@@ -124,7 +123,7 @@ static void generate_sam2coef_tables(void)
for (i = 0; i < DCT_LENGTH; i++)
{
angle = (PI/2.0)*((double) i + 0.5)/(double) DCT_LENGTH;
printf(" %.15e,\n", sin(angle));
printf(" %.15ef,\n", sin(angle));
}
printf("};\n\n");
@@ -132,7 +131,7 @@ static void generate_sam2coef_tables(void)
for (i = 0; i < MAX_DCT_LENGTH; i++)
{
angle = (PI/2.0)*((double) i + 0.5)/(double) MAX_DCT_LENGTH;
printf(" %.15le,\n", sin(angle));
printf(" %.15ef,\n", sin(angle));
}
printf("};\n\n");
@@ -180,7 +179,7 @@ static void generate_coef2sam_tables(void)
for (i = 0; i < DCT_LENGTH; i++)
{
angle = (PI/2.0)*((double) i + 0.5)/(double) DCT_LENGTH;
printf(" %.15e,\n", sin(angle));
printf(" %.15ef,\n", sin(angle));
}
printf("};\n\n");
@@ -188,7 +187,7 @@ static void generate_coef2sam_tables(void)
for (i = 0; i < MAX_DCT_LENGTH; i++)
{
angle = (PI/2.0)*((double) i + 0.5)/(double) MAX_DCT_LENGTH;
printf(" %.15e,\n", sin(angle));
printf(" %.15ef,\n", sin(angle));
}
printf("};\n\n");
@@ -218,7 +217,7 @@ int main(int argc, char *argv[])
for (i = 0; i < REGION_POWER_TABLE_SIZE; i++)
{
value = pow(10.0, 0.10*REGION_POWER_STEPSIZE_DB*(i - REGION_POWER_TABLE_NUM_NEGATIVES));
printf(" %.15e,\n", sqrt(value));
printf(" %.15ef,\n", sqrt(value));
}
printf("};\n\n");
@@ -226,7 +225,7 @@ int main(int argc, char *argv[])
for (i = 0; i < REGION_POWER_TABLE_SIZE; i++)
{
value = pow(10.0, 0.10*REGION_POWER_STEPSIZE_DB*(i - REGION_POWER_TABLE_NUM_NEGATIVES));
printf(" %.15e,\n", 1.0/sqrt(value));
printf(" %.15ef,\n", 1.0/sqrt(value));
}
printf("};\n\n");
@@ -259,14 +258,14 @@ int main(int argc, char *argv[])
printf("const float step_size[NUM_CATEGORIES] =\n{\n");
for (i = 0; i < NUM_CATEGORIES; i++)
{
printf(" %.15e,\n", step_size[i]);
printf(" %.15ef,\n", step_size[i]);
}
printf("};\n\n");
printf("const float step_size_inverse_table[NUM_CATEGORIES] =\n{\n");
for (i = 0; i < NUM_CATEGORIES; i++)
{
printf(" %.15e,\n", 1.0/step_size[i]);
printf(" %.15ef,\n", 1.0/step_size[i]);
}
printf("};\n\n");
@@ -275,7 +274,7 @@ int main(int argc, char *argv[])
for (i = 0; i < REGION_POWER_TABLE_SIZE; i++)
{
value = pow(10.0, 0.10*REGION_POWER_STEPSIZE_DB*(i - REGION_POWER_TABLE_NUM_NEGATIVES));
printf(" %.15e,\n", value);
printf(" %.15ef,\n", value);
}
printf("};\n\n");
@@ -283,9 +282,10 @@ int main(int argc, char *argv[])
for (i = 0; i < REGION_POWER_TABLE_SIZE - 1; i++)
{
value = (float) pow(10.0, 0.10*REGION_POWER_STEPSIZE_DB*(0.5 + (i - REGION_POWER_TABLE_NUM_NEGATIVES)));
printf(" %.15e,\n", value);
printf(" %.15ef,\n", value);
}
printf("};\n\n");
return 0;
}
/*- End of function --------------------------------------------------------*/
/*- End of file ------------------------------------------------------------*/