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/******************************************************************************
*
* 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;
}
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