You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
106 lines
3.1 KiB
106 lines
3.1 KiB
/*
|
|
* Copyright (C) 2015 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 "audio_hw_dsm_feedback"
|
|
/*#define LOG_NDEBUG 0*/
|
|
#define LOG_NDDEBUG 0
|
|
|
|
#include <errno.h>
|
|
#include <math.h>
|
|
#include <log/log.h>
|
|
|
|
#include "audio_hw.h"
|
|
#include "platform.h"
|
|
#include "platform_api.h"
|
|
#include <stdlib.h>
|
|
|
|
|
|
static struct pcm_config pcm_config_dsm = {
|
|
.channels = 2,
|
|
.rate = 48000,
|
|
.period_size = 256,
|
|
.period_count = 4,
|
|
.format = PCM_FORMAT_S16_LE,
|
|
.start_threshold = 0,
|
|
.stop_threshold = INT_MAX,
|
|
.avail_min = 0,
|
|
};
|
|
|
|
int start_dsm_feedback_processing(struct audio_device *adev, int enable)
|
|
{
|
|
int ret = 0;
|
|
int32_t pcm_dev_tx_id = -1;
|
|
static struct pcm *dsm_pcm_handle = NULL;
|
|
|
|
if (enable) {
|
|
/*do nothing if already enabled*/
|
|
if (dsm_pcm_handle)
|
|
return ret;
|
|
|
|
pcm_dev_tx_id = platform_get_pcm_device_id(USECASE_AUDIO_DSM_FEEDBACK, PCM_CAPTURE);
|
|
if (pcm_dev_tx_id < 0) {
|
|
ALOGE("%s: Invalid pcm device for usecase (%d)",
|
|
__func__, USECASE_AUDIO_DSM_FEEDBACK);
|
|
ret = -ENODEV;
|
|
goto close;
|
|
}
|
|
|
|
dsm_pcm_handle = pcm_open(adev->snd_card,
|
|
pcm_dev_tx_id,
|
|
PCM_IN, &pcm_config_dsm);
|
|
if (dsm_pcm_handle && !pcm_is_ready(dsm_pcm_handle)) {
|
|
ALOGE("%s: %s", __func__, pcm_get_error(dsm_pcm_handle));
|
|
ret = -EIO;
|
|
goto close;
|
|
}
|
|
|
|
if (pcm_start(dsm_pcm_handle) < 0) {
|
|
ALOGE("%s: pcm start for RX failed", __func__);
|
|
ret = -EINVAL;
|
|
goto close;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
close:
|
|
/*close pcm if disable or error happend in opening*/
|
|
if (dsm_pcm_handle) {
|
|
pcm_close(dsm_pcm_handle);
|
|
dsm_pcm_handle = NULL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void audio_extn_dsm_feedback_enable(struct audio_device *adev,
|
|
snd_device_t snd_device,
|
|
int benable)
|
|
{
|
|
if ( NULL == adev )
|
|
return;
|
|
|
|
if( snd_device == SND_DEVICE_OUT_SPEAKER ||
|
|
snd_device == SND_DEVICE_OUT_SPEAKER_REVERSE ||
|
|
snd_device == SND_DEVICE_OUT_VOICE_SPEAKER ||
|
|
snd_device == SND_DEVICE_OUT_SPEAKER_SAFE ||
|
|
snd_device == SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES ||
|
|
snd_device == SND_DEVICE_OUT_SPEAKER_AND_LINE ||
|
|
snd_device == SND_DEVICE_OUT_SPEAKER_SAFE_AND_HEADPHONES ||
|
|
snd_device == SND_DEVICE_OUT_SPEAKER_SAFE_AND_LINE )
|
|
start_dsm_feedback_processing(adev, benable);
|
|
}
|