80 lines
2.5 KiB
C++
80 lines
2.5 KiB
C++
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/*
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* Copyright (C) 2019 The LineageOS Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "set-audio-rotation"
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#include <android-base/logging.h>
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#include <tinyalsa/asoundlib.h>
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constexpr int SLOT_POSITIONS_0[] = { 0, 1, 0, 1 };
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constexpr int SLOT_POSITIONS_90[] = { 1, 1, 0, 0 };
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constexpr int SLOT_POSITIONS_180[] = { 1, 0, 1, 0 };
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constexpr int SLOT_POSITIONS_270[] = { 0, 0, 1, 1 };
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void setMixerValueByName(mixer *mixer, const char *name, int value) {
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const auto ctl = mixer_get_ctl_by_name(mixer, name);
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if (ctl == nullptr) {
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LOG(ERROR) << "Failed to find mixer ctl for " << name;
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return;
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}
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if (mixer_ctl_set_value(ctl, 0, value) < 0) {
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LOG(ERROR) << "Failed to set ctl value " << value << " for " << name;
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return;
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}
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}
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void setSlotPositions(const int *values) {
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const auto mixer = mixer_open(0);
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if (mixer == nullptr) {
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LOG(ERROR) << "Failed to open mixer";
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return;
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}
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setMixerValueByName(mixer, "ExtSPK LL TDM_ADC_SEL", values[0]);
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setMixerValueByName(mixer, "ExtSPK LR TDM_ADC_SEL", values[1]);
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setMixerValueByName(mixer, "ExtSPK UL TDM_ADC_SEL", values[2]);
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setMixerValueByName(mixer, "ExtSPK UR TDM_ADC_SEL", values[3]);
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setMixerValueByName(mixer, "ExtSPK LL TDM_DAC_SEL", values[0]);
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setMixerValueByName(mixer, "ExtSPK LR TDM_DAC_SEL", values[1]);
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setMixerValueByName(mixer, "ExtSPK UL TDM_DAC_SEL", values[2]);
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setMixerValueByName(mixer, "ExtSPK UR TDM_DAC_SEL", values[3]);
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mixer_close(mixer);
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};
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int main(int argc, char **argv) {
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if (argc != 2) {
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return -1;
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}
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if (strcmp(argv[1], "0") == 0) {
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setSlotPositions(SLOT_POSITIONS_0);
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} else if (strcmp(argv[1], "1") == 0) {
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setSlotPositions(SLOT_POSITIONS_90);
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} else if (strcmp(argv[1], "2") == 0) {
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setSlotPositions(SLOT_POSITIONS_180);
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} else if (strcmp(argv[1], "3") == 0) {
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setSlotPositions(SLOT_POSITIONS_270);
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} else {
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return -1;
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}
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return 0;
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}
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