marvell/services/audio/libacm/acm/src/audio_pa.c

/******************************************************************************
*
*  (C)Copyright 2022 ASRMicro. All Rights Reserved.
*
*  THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF ASRMicro.
*  The copyright notice above does not evidence any actual or intended
*  publication of such source code.
*  This Module contains Proprietary Information of ASRMicro and should be
*  treated as Confidential.
*  The information in this file is provided for the exclusive use of the
*  licensees of ASRMicro.
*  Such users have the right to use, modify, and incorporate this code into
*  products for purposes authorized by the license agreement provided they
*  include this notice and the associated copyright notice with any such
*  product.
*  The information in this file is provided "AS IS" without warranty.
*
******************************************************************************/


/******************************************************************************
*   Include files
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <cutils/log.h>
#include "audio_pa.h"


/******************************************************************************
*   Macro definitions
******************************************************************************/
#define AUDIO_PA_MAGIC 'y'
#define PA_ENABLE _IO(AUDIO_PA_MAGIC, 'a')
#define PA_DISABLE _IO(AUDIO_PA_MAGIC, 'b')


/******************************************************************************
*   Local variable definitions
******************************************************************************/
static int audio_pa_fd = -1;
static int is_in_voice = 0;
static int is_in_media = 0;


/******************************************************************************
*   function definitions
******************************************************************************/
int audio_pa_init(void)
{
    if (audio_pa_fd <= 0) {
        audio_pa_fd = open("/dev/audio_pa", O_RDWR);
        if (audio_pa_fd <= 0) {
            LOGI(audio_pa_init, "audio_pa %s:%s:%d, open device fail, fd=%d\n", __FILE__, __FUNCTION__, __LINE__, audio_pa_fd);
            return -1;
        }

        LOGI(aaudio_pa_init, "audio_pa %s:%s:%d, open device success, fd=%d\n", __FILE__, __FUNCTION__, __LINE__, audio_pa_fd);
        return 0;
    }

    LOGI(audio_pa_init, "audio_pa %s:%s:%d, device already open\n", __FILE__, __FUNCTION__, __LINE__);
    return -2;
}

int audio_pa_enable(AUDIO_PA_TYPE type)
{
    if (type < AUDIO_PA_VOICE || type > AUDIO_PA_MEDIA) {
        LOGI(audio_pa_enable, "audio_pa %s:%s:%d, type=%d is incorrect\n", __FILE__, __FUNCTION__, __LINE__);
        ioctl(audio_pa_fd, PA_DISABLE);
        return -1;
    }

    if (audio_pa_fd > 0) {
        LOGI(audio_pa_enable, "audio_pa %s:%s:%d, in_voice=%s, in_media=%s, type=%s\n",
             __FILE__, __FUNCTION__, __LINE__, is_in_voice?"yes":"no", is_in_media?"yes":"no", type == 1?"voice":"media");

        if (!is_in_voice && !is_in_media) {
            ioctl(audio_pa_fd, PA_ENABLE);
        }

        if (AUDIO_PA_VOICE == type && !is_in_voice) {
            is_in_voice = 1;
        }
        else if (AUDIO_PA_MEDIA == type && !is_in_media) {
            is_in_media = 1;
        }

        return 0;
    }

    LOGI(audio_pa_enable, "audio_pa %s:%s:%d, device not ready, fd=%d\n", __FILE__, __FUNCTION__, __LINE__, audio_pa_fd);
    return -2;
}

int audio_pa_disable(AUDIO_PA_TYPE type)
{
    if (type < AUDIO_PA_VOICE || type > AUDIO_PA_MEDIA) {
        LOGI(audio_pa_disable, "audio_pa %s:%s:%d, type=%d is incorrect\n", __FILE__, __FUNCTION__, __LINE__);
        ioctl(audio_pa_fd, PA_DISABLE);
        return -1;
    }

    if (audio_pa_fd > 0) {
        LOGI(audio_pa_disable, "audio_pa %s:%s:%d, in_voice=%s, in_media=%s, type=%s\n",
             __FILE__, __FUNCTION__, __LINE__, is_in_voice?"yes":"no", is_in_media?"yes":"no", type == 1?"voice":"media");

        if (AUDIO_PA_VOICE == type && is_in_voice) {
            is_in_voice = 0;
        }
        else if (AUDIO_PA_MEDIA == type && is_in_media) {
            is_in_media = 0;
        }
        else {
            return -2;
        }

        if (!is_in_voice && !is_in_media) {
            ioctl(audio_pa_fd, PA_DISABLE);
        }
        return 0;
    }

    LOGI(audio_pa_disable, "audio_pa %s:%s:%d, device not ready, fd=%d\n", __FILE__, __FUNCTION__, __LINE__, audio_pa_fd);
    return -3;
}

void audio_pa_exit(void)
{
    LOGI(audio_pa_exit, "audio_pa %s:%s:%d, fd=%d\n", __FILE__, __FUNCTION__, __LINE__, audio_pa_fd);

    if (audio_pa_fd > 0) {
        close(audio_pa_fd);
    }

    audio_pa_fd = -1;
}