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105 lines
3.1 KiB
105 lines
3.1 KiB
/* |
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* Copyright (C) 2015 The Android Open Source 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 "audio_hw_dsm_feedback" |
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/*#define LOG_NDEBUG 0*/ |
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#define LOG_NDDEBUG 0 |
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#include <errno.h> |
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#include <math.h> |
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#include <cutils/log.h> |
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#include "audio_hw.h" |
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#include "platform.h" |
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#include "platform_api.h" |
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#include <stdlib.h> |
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static struct pcm_config pcm_config_dsm = { |
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.channels = 2, |
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.rate = 48000, |
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.period_size = 256, |
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.period_count = 4, |
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.format = PCM_FORMAT_S16_LE, |
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.start_threshold = 0, |
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.stop_threshold = INT_MAX, |
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.avail_min = 0, |
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}; |
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int start_dsm_feedback_processing(struct audio_device *adev, int enable) |
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{ |
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int ret = 0; |
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int32_t pcm_dev_tx_id = -1; |
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static struct pcm *dsm_pcm_handle = NULL; |
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if (enable) { |
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/*do nothing if already enabled*/ |
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if (dsm_pcm_handle) |
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return ret; |
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pcm_dev_tx_id = platform_get_pcm_device_id(USECASE_AUDIO_DSM_FEEDBACK, PCM_CAPTURE); |
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if (pcm_dev_tx_id < 0) { |
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ALOGE("%s: Invalid pcm device for usecase (%d)", |
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__func__, USECASE_AUDIO_DSM_FEEDBACK); |
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ret = -ENODEV; |
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goto close; |
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} |
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dsm_pcm_handle = pcm_open(adev->snd_card, |
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pcm_dev_tx_id, |
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PCM_IN, &pcm_config_dsm); |
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if (dsm_pcm_handle && !pcm_is_ready(dsm_pcm_handle)) { |
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ALOGE("%s: %s", __func__, pcm_get_error(dsm_pcm_handle)); |
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ret = -EIO; |
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goto close; |
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} |
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if (pcm_start(dsm_pcm_handle) < 0) { |
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ALOGE("%s: pcm start for RX failed", __func__); |
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ret = -EINVAL; |
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goto close; |
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} |
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return ret; |
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} |
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close: |
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/*close pcm if disable or error happend in opening*/ |
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if (dsm_pcm_handle) { |
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pcm_close(dsm_pcm_handle); |
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dsm_pcm_handle = NULL; |
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} |
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return ret; |
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} |
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void audio_extn_dsm_feedback_enable(struct audio_device *adev, |
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snd_device_t snd_device, |
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int benable) |
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{ |
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if ( NULL == adev ) |
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return; |
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if( snd_device == SND_DEVICE_OUT_SPEAKER || |
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snd_device == SND_DEVICE_OUT_SPEAKER_REVERSE || |
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snd_device == SND_DEVICE_OUT_VOICE_SPEAKER || |
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snd_device == SND_DEVICE_OUT_SPEAKER_SAFE || |
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snd_device == SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES || |
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snd_device == SND_DEVICE_OUT_SPEAKER_AND_LINE || |
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snd_device == SND_DEVICE_OUT_SPEAKER_SAFE_AND_HEADPHONES || |
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snd_device == SND_DEVICE_OUT_SPEAKER_SAFE_AND_LINE ) |
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start_dsm_feedback_processing(adev, benable); |
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}
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