/******************************************************************************
|
*
|
* Copyright (C) 2015 The Android Open Source Project
|
*
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
* you may not use this file except in compliance with the License.
|
* You may obtain a copy of the License at:
|
*
|
* http://www.apache.org/licenses/LICENSE-2.0
|
*
|
* Unless required by applicable law or agreed to in writing, software
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
* See the License for the specific language governing permissions and
|
* limitations under the License.
|
*
|
*****************************************************************************
|
* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
|
*/
|
#include <stdio.h>
|
#include <math.h>
|
|
#include "impd_type_def.h"
|
#include "impd_drc_uni_tables.h"
|
#include "impd_drc_uni_common.h"
|
#include "impd_drc_struct.h"
|
#include "impd_drc_filter_bank.h"
|
#include "impd_drc_rom.h"
|
|
WORD32 impd_init_tbls(const WORD32 num_gain_max_values,
|
ia_tables_struct* str_tables) {
|
impd_gen_delta_time_code_tbl(num_gain_max_values,
|
str_tables->delta_time_code_table);
|
return (0);
|
}
|
|
void impd_get_slope_code_tbl_and_size(
|
ia_slope_code_table_struct const** slope_code_tbl_entry,
|
WORD32* num_slope_code_tbl_entries) {
|
*slope_code_tbl_entry = &(slopeCodeTableEntryBySize[0]);
|
*num_slope_code_tbl_entries = kNumSlopeValuesTable;
|
}
|
|
void impd_get_delta_gain_code_tbl(
|
const WORD32 gain_coding_profile,
|
ia_delta_gain_code_table_struct const** delta_time_code_tbl,
|
WORD32* num_entries) {
|
if (gain_coding_profile == GAIN_CODING_PROFILE_CLIPPING) {
|
*delta_time_code_tbl = deltaGainCodeTableProfile2BySize;
|
*num_entries = kNumDeltaGainValuesTableProfile2;
|
} else {
|
*delta_time_code_tbl = deltaGainCodeTableBySize;
|
*num_entries = kNumDeltaGainValuesTable;
|
}
|
}
|
|
void impd_gen_delta_time_code_tbl(
|
const WORD32 num_gain_max_values,
|
ia_delta_time_code_table_entry_struct* delta_time_code_tbl_item) {
|
WORD32 n, k;
|
|
WORD32 Z = 1;
|
while ((1 << Z) < 2 * num_gain_max_values) {
|
Z++;
|
}
|
|
delta_time_code_tbl_item[0].size = -1;
|
delta_time_code_tbl_item[0].code = -1;
|
delta_time_code_tbl_item[0].value = -1;
|
|
delta_time_code_tbl_item[1].size = 2;
|
delta_time_code_tbl_item[1].code = 0x0;
|
delta_time_code_tbl_item[1].value = 1;
|
for (n = 0; n < 4; n++) {
|
delta_time_code_tbl_item[n + 2].size = 4;
|
delta_time_code_tbl_item[n + 2].code = 0x4 + n;
|
delta_time_code_tbl_item[n + 2].value = n + 2;
|
}
|
for (n = 0; n < 8; n++) {
|
delta_time_code_tbl_item[n + 6].size = 5;
|
delta_time_code_tbl_item[n + 6].code = 0x10 + n;
|
delta_time_code_tbl_item[n + 6].value = n + 6;
|
}
|
|
k = 2 * num_gain_max_values - 14 + 1;
|
for (n = 0; n < k; n++) {
|
delta_time_code_tbl_item[n + 14].size = 2 + Z;
|
delta_time_code_tbl_item[n + 14].code = (0x3 << Z) + n;
|
delta_time_code_tbl_item[n + 14].value = n + 14;
|
}
|
}
|
|
WORD32
|
impd_get_delta_tmin(const WORD32 sampling_rate) {
|
WORD32 lowerBound = (WORD32)(0.5f + 0.0005f * sampling_rate);
|
WORD32 result = 1;
|
if (sampling_rate < 1000) {
|
return (UNEXPECTED_ERROR);
|
}
|
while (result <= lowerBound) result = result << 1;
|
return result;
|
}
|
