/*
* Copyright (C) 2014 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.
*/
#define LOG_TAG "offload_effect_equalizer"
//#define LOG_NDEBUG 0
#include <cutils/list.h>
#include <cutils/log.h>
#include <tinyalsa/asoundlib.h>
#include <sound/audio_effects.h>
#include <audio_effects/effect_equalizer.h>
#include "effect_api.h"
#include "equalizer.h"
/* Offload equalizer UUID: a0dac280-401c-11e3-9379-0002a5d5c51b */
const effect_descriptor_t equalizer_descriptor = {
{0x0bed4300, 0xddd6, 0x11db, 0x8f34, {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}}, // type
{0xa0dac280, 0x401c, 0x11e3, 0x9379, {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}}, // uuid
EFFECT_CONTROL_API_VERSION,
(EFFECT_FLAG_TYPE_INSERT | EFFECT_FLAG_HW_ACC_TUNNEL),
0, /* TODO */
1,
"MSM offload equalizer",
"The Android Open Source Project",
};
static const char *equalizer_preset_names[] = {
"Normal",
"Classical",
"Dance",
"Flat",
"Folk",
"Heavy Metal",
"Hip Hop",
"Jazz",
"Pop",
"Rock"
};
static const uint32_t equalizer_band_freq_range[NUM_EQ_BANDS][2] = {
{30000, 120000},
{120001, 460000},
{460001, 1800000},
{1800001, 7000000},
{7000001, 20000000}};
static const int16_t equalizer_band_presets_level[] = {
3, 0, 0, 0, 3, /* Normal Preset */
5, 3, -2, 4, 4, /* Classical Preset */
6, 0, 2, 4, 1, /* Dance Preset */
0, 0, 0, 0, 0, /* Flat Preset */
3, 0, 0, 2, -1, /* Folk Preset */
4, 1, 9, 3, 0, /* Heavy Metal Preset */
5, 3, 0, 1, 3, /* Hip Hop Preset */
4, 2, -2, 2, 5, /* Jazz Preset */
-1, 2, 5, 1, -2, /* Pop Preset */
5, 3, -1, 3, 5}; /* Rock Preset */
const uint16_t equalizer_band_presets_freq[NUM_EQ_BANDS] = {
60, /* Frequencies in Hz */
230,
910,
3600,
14000
};
/*
* Equalizer operations
*/
int equalizer_get_band_level(equalizer_context_t *context, int32_t band)
{
ALOGV("%s: band: %d level: %d", __func__, band,
context->band_levels[band] * 100);
return context->band_levels[band] * 100;
}
int equalizer_set_band_level(equalizer_context_t *context, int32_t band,
int32_t level)
{
ALOGV("%s: band: %d, level: %d", __func__, band, level);
if (level > 0) {
level = (int)((level+50)/100);
} else {
level = (int)((level-50)/100);
}
context->band_levels[band] = level;
context->preset = PRESET_CUSTOM;
offload_eq_set_preset(&(context->offload_eq), PRESET_CUSTOM);
offload_eq_set_bands_level(&(context->offload_eq),
NUM_EQ_BANDS,
equalizer_band_presets_freq,
context->band_levels);
if (context->ctl)
offload_eq_send_params(context->ctl, &context->offload_eq,
OFFLOAD_SEND_EQ_ENABLE_FLAG |
OFFLOAD_SEND_EQ_BANDS_LEVEL);
return 0;
}
int equalizer_get_center_frequency(equalizer_context_t *context __unused, int32_t band)
{
ALOGV("%s: band: %d", __func__, band);
return (equalizer_band_freq_range[band][0] +
equalizer_band_freq_range[band][1]) / 2;
}
int equalizer_get_band_freq_range(equalizer_context_t *context __unused, int32_t band,
uint32_t *low, uint32_t *high)
{
ALOGV("%s: band: %d", __func__, band);
*low = equalizer_band_freq_range[band][0];
*high = equalizer_band_freq_range[band][1];
return 0;
}
int equalizer_get_band(equalizer_context_t *context __unused, uint32_t freq)
{
int i;
ALOGV("%s: freq: %d", __func__, freq);
for (i = 0; i < NUM_EQ_BANDS; i++) {
if (freq <= equalizer_band_freq_range[i][1]) {
return i;
}
}
return NUM_EQ_BANDS - 1;
}
int equalizer_get_preset(equalizer_context_t *context)
{
ALOGV("%s: preset: %d", __func__, context->preset);
return context->preset;
}
int equalizer_set_preset(equalizer_context_t *context, int preset)
{
int i;
ALOGV("%s: preset: %d", __func__, preset);
context->preset = preset;
for (i=0; i<NUM_EQ_BANDS; i++)
context->band_levels[i] =
equalizer_band_presets_level[i + preset * NUM_EQ_BANDS];
offload_eq_set_preset(&(context->offload_eq), preset);
offload_eq_set_bands_level(&(context->offload_eq),
NUM_EQ_BANDS,
equalizer_band_presets_freq,
context->band_levels);
if(context->ctl)
offload_eq_send_params(context->ctl, &context->offload_eq,
OFFLOAD_SEND_EQ_ENABLE_FLAG |
OFFLOAD_SEND_EQ_PRESET);
return 0;
}
const char * equalizer_get_preset_name(equalizer_context_t *context __unused,
int32_t preset)
{
ALOGV("%s: preset: %s", __func__, equalizer_preset_names[preset]);
if (preset == PRESET_CUSTOM) {
return "Custom";
} else {
return equalizer_preset_names[preset];
}
}
int equalizer_get_num_presets(equalizer_context_t *context __unused)
{
ALOGV("%s: presets_num: %d", __func__,
sizeof(equalizer_preset_names)/sizeof(char *));
return sizeof(equalizer_preset_names)/sizeof(char *);
}
int equalizer_get_parameter(effect_context_t *context, effect_param_t *p,
uint32_t *size)
{
equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
int voffset = ((p->psize - 1) / sizeof(int32_t) + 1) * sizeof(int32_t);
int32_t *param_tmp = (int32_t *)p->data;
int32_t param = *param_tmp++;
int32_t param2;
char *name;
void *value = p->data + voffset;
int i;
ALOGV("%s", __func__);
p->status = 0;
switch (param) {
case EQ_PARAM_NUM_BANDS:
case EQ_PARAM_CUR_PRESET:
case EQ_PARAM_GET_NUM_OF_PRESETS:
case EQ_PARAM_BAND_LEVEL:
case EQ_PARAM_GET_BAND:
if (p->vsize < sizeof(int16_t))
p->status = -EINVAL;
p->vsize = sizeof(int16_t);
break;
case EQ_PARAM_LEVEL_RANGE:
if (p->vsize < 2 * sizeof(int16_t))
p->status = -EINVAL;
p->vsize = 2 * sizeof(int16_t);
break;
case EQ_PARAM_BAND_FREQ_RANGE:
if (p->vsize < 2 * sizeof(int32_t))
p->status = -EINVAL;
p->vsize = 2 * sizeof(int32_t);
break;
case EQ_PARAM_CENTER_FREQ:
if (p->vsize < sizeof(int32_t))
p->status = -EINVAL;
p->vsize = sizeof(int32_t);
break;
case EQ_PARAM_GET_PRESET_NAME:
break;
case EQ_PARAM_PROPERTIES:
if (p->vsize < (2 + NUM_EQ_BANDS) * sizeof(uint16_t))
p->status = -EINVAL;
p->vsize = (2 + NUM_EQ_BANDS) * sizeof(uint16_t);
break;
default:
p->status = -EINVAL;
}
*size = sizeof(effect_param_t) + voffset + p->vsize;
if (p->status != 0)
return 0;
switch (param) {
case EQ_PARAM_NUM_BANDS:
ALOGV("%s: EQ_PARAM_NUM_BANDS", __func__);
*(uint16_t *)value = (uint16_t)NUM_EQ_BANDS;
break;
case EQ_PARAM_LEVEL_RANGE:
ALOGV("%s: EQ_PARAM_LEVEL_RANGE", __func__);
*(int16_t *)value = -1500;
*((int16_t *)value + 1) = 1500;
break;
case EQ_PARAM_BAND_LEVEL:
ALOGV("%s: EQ_PARAM_BAND_LEVEL", __func__);
param2 = *param_tmp;
if (param2 >= NUM_EQ_BANDS) {
p->status = -EINVAL;
break;
}
*(int16_t *)value = (int16_t)equalizer_get_band_level(eq_ctxt, param2);
break;
case EQ_PARAM_CENTER_FREQ:
ALOGV("%s: EQ_PARAM_CENTER_FREQ", __func__);
param2 = *param_tmp;
if (param2 >= NUM_EQ_BANDS) {
p->status = -EINVAL;
break;
}
*(int32_t *)value = equalizer_get_center_frequency(eq_ctxt, param2);
break;
case EQ_PARAM_BAND_FREQ_RANGE:
ALOGV("%s: EQ_PARAM_BAND_FREQ_RANGE", __func__);
param2 = *param_tmp;
if (param2 >= NUM_EQ_BANDS) {
p->status = -EINVAL;
break;
}
equalizer_get_band_freq_range(eq_ctxt, param2, (uint32_t *)value,
((uint32_t *)value + 1));
break;
case EQ_PARAM_GET_BAND:
ALOGV("%s: EQ_PARAM_GET_BAND", __func__);
param2 = *param_tmp;
*(uint16_t *)value = (uint16_t)equalizer_get_band(eq_ctxt, param2);
break;
case EQ_PARAM_CUR_PRESET:
ALOGV("%s: EQ_PARAM_CUR_PRESET", __func__);
*(uint16_t *)value = (uint16_t)equalizer_get_preset(eq_ctxt);
break;
case EQ_PARAM_GET_NUM_OF_PRESETS:
ALOGV("%s: EQ_PARAM_GET_NUM_OF_PRESETS", __func__);
*(uint16_t *)value = (uint16_t)equalizer_get_num_presets(eq_ctxt);
break;
case EQ_PARAM_GET_PRESET_NAME:
ALOGV("%s: EQ_PARAM_GET_PRESET_NAME", __func__);
param2 = *param_tmp;
ALOGV("param2: %d", param2);
if (param2 >= equalizer_get_num_presets(eq_ctxt)) {
p->status = -EINVAL;
break;
}
name = (char *)value;
strlcpy(name, equalizer_get_preset_name(eq_ctxt, param2), p->vsize - 1);
name[p->vsize - 1] = 0;
p->vsize = strlen(name) + 1;
break;
case EQ_PARAM_PROPERTIES: {
ALOGV("%s: EQ_PARAM_PROPERTIES", __func__);
int16_t *prop = (int16_t *)value;
prop[0] = (int16_t)equalizer_get_preset(eq_ctxt);
prop[1] = (int16_t)NUM_EQ_BANDS;
for (i = 0; i < NUM_EQ_BANDS; i++) {
prop[2 + i] = (int16_t)equalizer_get_band_level(eq_ctxt, i);
}
} break;
default:
p->status = -EINVAL;
break;
}
return 0;
}
int equalizer_set_parameter(effect_context_t *context, effect_param_t *p,
uint32_t size __unused)
{
equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
int voffset = ((p->psize - 1) / sizeof(int32_t) + 1) * sizeof(int32_t);
void *value = p->data + voffset;
int32_t *param_tmp = (int32_t *)p->data;
int32_t param = *param_tmp++;
int32_t preset;
int32_t band;
int32_t level;
int i;
ALOGV("%s", __func__);
p->status = 0;
switch (param) {
case EQ_PARAM_CUR_PRESET:
ALOGV("EQ_PARAM_CUR_PRESET");
preset = (int32_t)(*(uint16_t *)value);
if ((preset >= equalizer_get_num_presets(eq_ctxt)) || (preset < 0)) {
p->status = -EINVAL;
break;
}
equalizer_set_preset(eq_ctxt, preset);
break;
case EQ_PARAM_BAND_LEVEL:
ALOGV("EQ_PARAM_BAND_LEVEL");
band = *param_tmp;
level = (int32_t)(*(int16_t *)value);
if (band >= NUM_EQ_BANDS) {
p->status = -EINVAL;
break;
}
equalizer_set_band_level(eq_ctxt, band, level);
break;
case EQ_PARAM_PROPERTIES: {
ALOGV("EQ_PARAM_PROPERTIES");
int16_t *prop = (int16_t *)value;
if ((int)prop[0] >= equalizer_get_num_presets(eq_ctxt)) {
p->status = -EINVAL;
break;
}
if (prop[0] >= 0) {
equalizer_set_preset(eq_ctxt, (int)prop[0]);
} else {
if ((int)prop[1] != NUM_EQ_BANDS) {
p->status = -EINVAL;
break;
}
for (i = 0; i < NUM_EQ_BANDS; i++) {
equalizer_set_band_level(eq_ctxt, i, (int)prop[2 + i]);
}
}
} break;
default:
p->status = -EINVAL;
break;
}
return 0;
}
int equalizer_set_device(effect_context_t *context, uint32_t device)
{
ALOGV("%s: device: %d", __func__, device);
equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
eq_ctxt->device = device;
offload_eq_set_device(&(eq_ctxt->offload_eq), device);
return 0;
}
int equalizer_reset(effect_context_t *context)
{
equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
return 0;
}
int equalizer_init(effect_context_t *context)
{
ALOGV("%s", __func__);
equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
context->config.inputCfg.accessMode = EFFECT_BUFFER_ACCESS_READ;
context->config.inputCfg.channels = AUDIO_CHANNEL_OUT_STEREO;
context->config.inputCfg.format = AUDIO_FORMAT_PCM_16_BIT;
context->config.inputCfg.samplingRate = 44100;
context->config.inputCfg.bufferProvider.getBuffer = NULL;
context->config.inputCfg.bufferProvider.releaseBuffer = NULL;
context->config.inputCfg.bufferProvider.cookie = NULL;
context->config.inputCfg.mask = EFFECT_CONFIG_ALL;
context->config.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_ACCUMULATE;
context->config.outputCfg.channels = AUDIO_CHANNEL_OUT_STEREO;
context->config.outputCfg.format = AUDIO_FORMAT_PCM_16_BIT;
context->config.outputCfg.samplingRate = 44100;
context->config.outputCfg.bufferProvider.getBuffer = NULL;
context->config.outputCfg.bufferProvider.releaseBuffer = NULL;
context->config.outputCfg.bufferProvider.cookie = NULL;
context->config.outputCfg.mask = EFFECT_CONFIG_ALL;
set_config(context, &context->config);
memset(&(eq_ctxt->offload_eq), 0, sizeof(struct eq_params));
offload_eq_set_preset(&(eq_ctxt->offload_eq), INVALID_PRESET);
return 0;
}
int equalizer_enable(effect_context_t *context)
{
equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
ALOGV("%s", __func__);
if (!offload_eq_get_enable_flag(&(eq_ctxt->offload_eq))) {
offload_eq_set_enable_flag(&(eq_ctxt->offload_eq), true);
if (eq_ctxt->ctl)
offload_eq_send_params(eq_ctxt->ctl, &eq_ctxt->offload_eq,
OFFLOAD_SEND_EQ_ENABLE_FLAG |
OFFLOAD_SEND_EQ_BANDS_LEVEL);
}
return 0;
}
int equalizer_disable(effect_context_t *context)
{
equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
ALOGV("%s", __func__);
if (offload_eq_get_enable_flag(&(eq_ctxt->offload_eq))) {
offload_eq_set_enable_flag(&(eq_ctxt->offload_eq), false);
if (eq_ctxt->ctl)
offload_eq_send_params(eq_ctxt->ctl, &eq_ctxt->offload_eq,
OFFLOAD_SEND_EQ_ENABLE_FLAG);
}
return 0;
}
int equalizer_start(effect_context_t *context, output_context_t *output)
{
equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
ALOGV("%s: %p", __func__, output->ctl);
eq_ctxt->ctl = output->ctl;
if (offload_eq_get_enable_flag(&(eq_ctxt->offload_eq)))
if (eq_ctxt->ctl)
offload_eq_send_params(eq_ctxt->ctl, &eq_ctxt->offload_eq,
OFFLOAD_SEND_EQ_ENABLE_FLAG |
OFFLOAD_SEND_EQ_BANDS_LEVEL);
return 0;
}
int equalizer_stop(effect_context_t *context, output_context_t *output __unused)
{
equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
ALOGV("%s", __func__);
eq_ctxt->ctl = NULL;
return 0;
}