android_device_xiaomi_sm835.../vibrator/effect/effect.cpp

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/*
* Copyright (c) 2020, The Linux Foundation. All rights reserved.
* Copyright (C) 2022 The LineageOS Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define LOG_TAG "libxiaomivibratoreffect"
#include <iostream>
#include <fstream>
#include <log/log.h>
#include <sys/stat.h>
#include "effect.h"
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a)))
static struct effect_stream effects[] = {
{
.effect_id = 0,
.data = 0,
.length = 0,
.play_rate_hz = 24000,
},
{
.effect_id = 1,
.data = 0,
.length = 0,
.play_rate_hz = 24000,
},
{
.effect_id = 2,
.data = 0,
.length = 0,
.play_rate_hz = 24000,
},
{
.effect_id = 3,
.data = 0,
.length = 0,
.play_rate_hz = 24000,
},
{
.effect_id = 4,
.data = 0,
.length = 0,
.play_rate_hz = 24000,
},
{
.effect_id = 5,
.data = 0,
.length = 0,
.play_rate_hz = 24000,
},
};
// Array containing the paths to fifo data in vendor.
// The position in the array must match the effect id.
static const std::string fifo_data_paths[] = {
"/vendor/firmware/seq_bin_wav1.bin",
"/vendor/firmware/seq_bin_wav2.bin",
"/vendor/firmware/seq_bin_wav3.bin",
"/vendor/firmware/seq_bin_wav4.bin",
"/vendor/firmware/seq_bin_wav5.bin",
"/vendor/firmware/seq_bin_wav6.bin",
};
// Function to parse custom fifo data from vendor
int parse_custom_data(effect_stream *effect) {
const char *path = fifo_data_paths[effect->effect_id].c_str();
std::ifstream data;
struct stat file_stat;
int rc = 0;
ALOGI("Parsing custom fifo data for effect %d from path %s",
effect->effect_id, path);
rc = stat(path, &file_stat);
if (!rc) {
effect->length = file_stat.st_size;
} else {
ALOGE("Could not open %s", path);
return rc;
}
// Create a persistent 8-bit int array which contains the fifo data, one
// slot of the array contains one byte of the fifo data from vendor.
int8_t *custom_data = new int8_t[effect->length];
data.open(path, std::ios::in | std::ios::binary);
data.read(reinterpret_cast<char *>(custom_data), effect->length);
data.close();
effect->data = custom_data;
return rc;
}
const struct effect_stream *get_effect_stream(uint32_t effect_id)
{
int i;
for (i = 0; i < ARRAY_SIZE(effects); i++) {
if (effect_id == effects[i].effect_id) {
if (effects[i].length == 0 && parse_custom_data(&effects[i])) {
ALOGE("Could not get custom_data for effect %d", effects[i].effect_id);
return NULL;
}
return &effects[i];
}
}
return NULL;
}