android设置主mic/副mic录音

//添加MIC设置参数

/hal/audio_extn/audio_extn.c

@@ -75,6 +75,7 @@ struct audio_extn_module {

     bool ras_enabled;

     struct aptx_dec_bt_addr addr;

     struct audio_device *adev;

+    int mic_choose;

 };

 static struct audio_extn_module aextnmod;

@@ -838,6 +839,7 @@ void audio_extn_set_parameters(struct audio_device *adev,

    if (adev->offload_effects_set_parameters != NULL)

        adev->offload_effects_set_parameters(parms);

    audio_extn_set_aptx_dec_bt_addr(adev, parms);

+   audio_extn_set_mic_choose_parameters(parms);

 }

 void audio_extn_get_parameters(const struct audio_device *adev,

@@ -1478,3 +1480,29 @@ int audio_extn_set_device_cfg_params(struct audio_device *adev,

     return 0;

 }

// 获取mic参数

int audio_extn_get_mic_choose_parameters(void)

{

    ALOGD("%s: mic_choose:%d", __func__, aextnmod.mic_choose);

    return aextnmod.mic_choose;

}

// 设置mic参数

void audio_extn_set_mic_choose_parameters(struct str_parms *parms)

{

    int ret;

    char value[32] = {0};

    ret = str_parms_get_str(parms, "MIC_CHOOSE", value, sizeof(value));

    ALOGD("mic_choose_ret:%d", ret);

    if (ret >= 0) {

        if (strcmp(value, "primary_mic") == 0) {

            aextnmod.mic_choose = 1;

        }else if (strcmp(value, "secondary_mic") == 0) {

            aextnmod.mic_choose = 2;

        } else {

            aextnmod.mic_choose = 0;

        }

    } else {

        aextnmod.mic_choose = 0;

    }

    ALOGD("%s: mic_choose:%d, value:%s", __func__, aextnmod.mic_choose, value);

}

//头文件中声明

/hal/audio_extn/audio_extn.h

+

+

+int audio_extn_get_mic_choose_parameters(void);

+

+void audio_extn_set_mic_choose_parameters(struct str_parms *parms);

hal/msm8916/platform.c

@@ -541,6 +541,7 @@ static const char * const device_table[SND_DEVICE_MAX] = {

     [SND_DEVICE_IN_UNPROCESSED_THREE_MIC] = "three-mic",

     [SND_DEVICE_IN_UNPROCESSED_QUAD_MIC] = "quad-mic",

     [SND_DEVICE_IN_UNPROCESSED_HEADSET_MIC] = "headset-mic",

	 //添加mic参数，与mixer_paths_mtp.xml对应

+    [SND_DEVICE_IN_SECONDARY_MIC] = "secondary-mic",

 };

 // Platform specific backend bit width table

@@ -683,6 +684,7 @@ static int acdb_device_table[SND_DEVICE_MAX] = {

     [SND_DEVICE_IN_UNPROCESSED_THREE_MIC] = 145,

     [SND_DEVICE_IN_UNPROCESSED_QUAD_MIC] = 146,

     [SND_DEVICE_IN_UNPROCESSED_HEADSET_MIC] = 147,

	 //自定义ID

+    [SND_DEVICE_IN_SECONDARY_MIC] = 170,

 };

 struct name_to_index {

@@ -4313,6 +4315,20 @@ snd_device_t platform_get_input_snd_device(void *platform, audio_devices_t out_d

                     snd_device = SND_DEVICE_IN_HANDSET_DMIC;

                     platform_set_echo_reference(adev, true, out_device);

                 }

+

+                /*

+                * 上层通过 AudioManager.setParameters("MIC_CHOOSE=xxx") 选择使用主副麦

+                * 主麦：MIC_CHOOSE=primary_mic

+                * 副麦：MIC_CHOOSE=secondary_mic

+                */

+                int mic_choose = 0;

+                mic_choose = audio_extn_get_mic_choose_parameters();

+                if (mic_choose == 1) {

+                    snd_device = SND_DEVICE_IN_HANDSET_MIC;

+                } else if (mic_choose == 2) {

+                    snd_device = SND_DEVICE_IN_SECONDARY_MIC;

+                }

+                ALOGD("%s: snd_device mic_choose (%s)", __func__, device_table[snd_device]);

             }

         }

     } else if (source == AUDIO_SOURCE_FM_TUNER) {

hal/msm8916/platform.h

     SND_DEVICE_IN_UNPROCESSED_THREE_MIC,

     SND_DEVICE_IN_UNPROCESSED_QUAD_MIC,

     SND_DEVICE_IN_UNPROCESSED_HEADSET_MIC,

+    SND_DEVICE_IN_SECONDARY_MIC,

     SND_DEVICE_IN_END,

     SND_DEVICE_MAX = SND_DEVICE_IN_END,

// 设置MIC寄存器参数。

/configs/msm8953/mixer_paths_mtp.xml

           <path name="wsa-speaker-and-headphones" />

     </path>

+    <path name="secondary-mic">

+       <path name="adc3"/>

+   </path>

 </mixer>