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BAT: Add converting functions

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Add functions that converting audio samples to double data for analysis,
and functions that converting float data to audio samples for playback.

Signed-off-by: Lu, Han <han.lu@intel.com>
Signed-off-by: Liam Girdwood <liam.r.girdwood@intel.com>
Signed-off-by: Bernard Gautier <bernard.gautier@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Lu, Han 2015-09-23 15:48:53 +08:00 committed by Takashi Iwai
parent 34e9ae911f
commit 6c4c5e51fa
2 changed files with 136 additions and 0 deletions
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113
bat/convert.c Normal file
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/*
* Copyright (C) 2013-2015 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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. See the
* GNU General Public License for more details.
*
*/
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdint.h>
void convert_uint8_to_double(void *buf, double *val, int samples)
{
int i;
for (i = 0; i < samples; i++)
val[i] = ((uint8_t *) buf)[i];
}
void convert_int16_to_double(void *buf, double *val, int samples)
{
int i;
for (i = 0; i < samples; i++)
val[i] = ((int16_t *) buf)[i];
}
void convert_int24_to_double(void *buf, double *val, int samples)
{
int i;
int32_t tmp;
for (i = 0; i < samples; i++) {
tmp = ((uint8_t *) buf)[i * 3 + 2] << 24;
tmp |= ((uint8_t *) buf)[i * 3 + 1] << 16;
tmp |= ((uint8_t *) buf)[i * 3] << 8;
tmp >>= 8;
val[i] = tmp;
}
}
void convert_int32_to_double(void *buf, double *val, int samples)
{
int i;
for (i = 0; i < samples; i++)
val[i] = ((int32_t *) buf)[i];
}
void convert_float_to_uint8(float *val, void *buf, int samples, int channels)
{
int i, c, idx;
for (i = 0; i < samples; i++) {
for (c = 0; c < channels; c++) {
idx = i * channels + c;
((uint8_t *) buf)[idx] = (uint8_t) val[idx];
}
}
}
void convert_float_to_int16(float *val, void *buf, int samples, int channels)
{
int i, c, idx;
for (i = 0; i < samples; i++) {
for (c = 0; c < channels; c++) {
idx = i * channels + c;
((int16_t *) buf)[idx] = (int16_t) val[idx];
}
}
}
void convert_float_to_int24(float *val, void *buf, int samples, int channels)
{
int i, c, idx_f, idx_i;
int32_t val_f_i;
for (i = 0; i < samples; i++) {
for (c = 0; c < channels; c++) {
idx_f = i * channels + c;
idx_i = 3 * idx_f;
val_f_i = (int32_t) val[idx_f];
((int8_t *) buf)[idx_i + 0] =
(int8_t) (val_f_i & 0xff);
((int8_t *) buf)[idx_i + 1] =
(int8_t) ((val_f_i >> 8) & 0xff);
((int8_t *) buf)[idx_i + 2] =
(int8_t) ((val_f_i >> 16) & 0xff);
}
}
}
void convert_float_to_int32(float *val, void *buf, int samples, int channels)
{
int i, c, idx;
for (i = 0; i < samples; i++) {
for (c = 0; c < channels; c++) {
idx = i * channels + c;
((int32_t *) buf)[idx] = (int32_t) val[idx];
}
}
}

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/*
* Copyright (C) 2013-2015 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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. See the
* GNU General Public License for more details.
*
*/
void convert_uint8_to_double(void *, double *, int);
void convert_int16_to_double(void *, double *, int);
void convert_int24_to_double(void *, double *, int);
void convert_int32_to_double(void *, double *, int);
void convert_float_to_uint8(float *, void *, int, int);
void convert_float_to_int16(float *, void *, int, int);
void convert_float_to_int24(float *, void *, int, int);
void convert_float_to_int32(float *, void *, int, int);