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Commit 23675f6c authored by jiabin's avatar jiabin
Browse files

Support query active microphones information in AudioRecord. 

This is part of device enumeration. With the new add API, developer
could get the active microphones information for each channel.

Bug: 64038649
Test: Run cts and check the print log.
Change-Id: I8dd77d0bf3024d5ecb552e099c313fb62f1fda54
parent c0f49440

api/current.txt

+1 −0
Original line number Diff line number Diff line
@@ -22096,6 +22096,7 @@ package android.media { 
    method public void addOnRoutingChangedListener(android.media.AudioRouting.OnRoutingChangedListener, android.os.Handler);

    method public deprecated void addOnRoutingChangedListener(android.media.AudioRecord.OnRoutingChangedListener, android.os.Handler);

    method protected void finalize();

    method public java.util.List<android.media.MicrophoneInfo> getActiveMicrophones() throws java.io.IOException;

    method public int getAudioFormat();

    method public int getAudioSessionId();

    method public int getAudioSource();

core/jni/android_media_AudioRecord.cpp

+54 −0
Original line number Diff line number Diff line
@@ -25,6 +25,8 @@ 


#include <utils/Log.h>

#include <media/AudioRecord.h>

#include <media/MicrophoneInfo.h>

#include <vector>



#include <nativehelper/ScopedUtfChars.h>
@@ -32,6 +34,7 @@ 
#include "android_media_AudioErrors.h"

#include "android_media_DeviceCallback.h"

#include "android_media_MediaMetricsJNI.h"

#include "android_media_MicrophoneInfo.h"



// ----------------------------------------------------------------------------
@@ -41,6 +44,11 @@ using namespace android; 
static const char* const kClassPathName = "android/media/AudioRecord";

static const char* const kAudioAttributesClassPathName = "android/media/AudioAttributes";



static jclass gArrayListClass;

static struct {

    jmethodID add;

} gArrayListMethods;



struct audio_record_fields_t {

    // these fields provide access from C++ to the...

    jmethodID postNativeEventInJava; //... event post callback method
@@ -784,6 +792,46 @@ android_media_AudioRecord_native_getMetrics(JNIEnv *env, jobject thiz) 
    return mybundle;

}



// ----------------------------------------------------------------------------

static jint android_media_AudioRecord_get_active_microphones(JNIEnv *env,

        jobject thiz, jobject jActiveMicrophones) {

    if (jActiveMicrophones == NULL) {

        ALOGE("jActiveMicrophones is null");

        return (jint)AUDIO_JAVA_BAD_VALUE;

    }

    if (!env->IsInstanceOf(jActiveMicrophones, gArrayListClass)) {

        ALOGE("getActiveMicrophones not an arraylist");

        return (jint)AUDIO_JAVA_BAD_VALUE;

    }



    sp<AudioRecord> lpRecorder = getAudioRecord(env, thiz);

    if (lpRecorder == NULL) {

        jniThrowException(env, "java/lang/IllegalStateException",

            "Unable to retrieve AudioRecord pointer for getActiveMicrophones()");

        return (jint)AUDIO_JAVA_ERROR;

    }



    jint jStatus = AUDIO_JAVA_SUCCESS;

    std::vector<media::MicrophoneInfo> activeMicrophones;

    status_t status = lpRecorder->getActiveMicrophones(&activeMicrophones);

    if (status != NO_ERROR) {

        ALOGE_IF(status != NO_ERROR, "AudioRecord::getActiveMicrophones error %d", status);

        jStatus = nativeToJavaStatus(status);

        return jStatus;

    }



    for (size_t i = 0; i < activeMicrophones.size(); i++) {

        jobject jMicrophoneInfo;

        jStatus = convertMicrophoneInfoFromNative(env, &jMicrophoneInfo, &activeMicrophones[i]);

        if (jStatus != AUDIO_JAVA_SUCCESS) {

            return jStatus;

        }

        env->CallBooleanMethod(jActiveMicrophones, gArrayListMethods.add, jMicrophoneInfo);

        env->DeleteLocalRef(jMicrophoneInfo);

    }

    return jStatus;

}



// ----------------------------------------------------------------------------

// ----------------------------------------------------------------------------

static const JNINativeMethod gMethods[] = {
@@ -824,6 +872,8 @@ static const JNINativeMethod gMethods[] = { 
                                        (void *)android_media_AudioRecord_disableDeviceCallback},

    {"native_get_timestamp", "(Landroid/media/AudioTimestamp;I)I",

                                       (void *)android_media_AudioRecord_get_timestamp},

    {"native_get_active_microphones", "(Ljava/util/ArrayList;)I",

                                        (void *)android_media_AudioRecord_get_active_microphones},

};



// field names found in android/media/AudioRecord.java
@@ -873,6 +923,10 @@ int register_android_media_AudioRecord(JNIEnv *env) 
    javaAudioTimestampFields.fieldNanoTime =

            GetFieldIDOrDie(env, audioTimestampClass, "nanoTime", "J");



    jclass arrayListClass = FindClassOrDie(env, "java/util/ArrayList");

    gArrayListClass = MakeGlobalRefOrDie(env, arrayListClass);

    gArrayListMethods.add = GetMethodIDOrDie(env, arrayListClass, "add", "(Ljava/lang/Object;)Z");



    return RegisterMethodsOrDie(env, kClassPathName, gMethods, NELEM(gMethods));

}

media/java/android/media/AudioRecord.java

+33 −0
Original line number Diff line number Diff line
@@ -16,12 +16,15 @@ 


package android.media;



import java.io.IOException;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.lang.ref.WeakReference;

import java.nio.ByteBuffer;

import java.util.Collection;

import java.util.Iterator;

import java.util.ArrayList;

import java.util.List;



import android.annotation.IntDef;

import android.annotation.NonNull;
@@ -35,6 +38,7 @@ import android.os.Message; 
import android.os.PersistableBundle;

import android.os.RemoteException;

import android.os.ServiceManager;

import android.text.TextUtils;

import android.util.ArrayMap;

import android.util.Log;
@@ -1601,6 +1605,32 @@ public class AudioRecord implements AudioRouting 
        }

    }



    //--------------------------------------------------------------------------

    // Microphone information

    //--------------------

    /**

     * Returns a lists of {@link MicrophoneInfo} representing the active microphones.

     * By querying channel mapping for each active microphone, developer can know how

     * the microphone is used by each channels or a capture stream.

     * Note that the information about the active microphones may change during a recording.

     * See {@link AudioManager#registerAudioDeviceCallback} to be notified of changes

     * in the audio devices, querying the active microphones then will return the latest

     * information.

     *

     * @return a lists of {@link MicrophoneInfo} representing the active microphones.

     * @throws IOException if an error occurs

     */

    public List<MicrophoneInfo> getActiveMicrophones() throws IOException {

        ArrayList<MicrophoneInfo> activeMicrophones = new ArrayList<>();

        int status = native_get_active_microphones(activeMicrophones);

        if (status != AudioManager.SUCCESS) {

            Log.e(TAG, "getActiveMicrophones failed:" + status);

            return new ArrayList<MicrophoneInfo>();

        }

        AudioManager.setPortIdForMicrophones(activeMicrophones);

        return activeMicrophones;

    }



    //---------------------------------------------------------

    // Interface definitions

    //--------------------
@@ -1746,6 +1776,9 @@ public class AudioRecord implements AudioRouting 
    private native final int native_get_timestamp(@NonNull AudioTimestamp outTimestamp,

            @AudioTimestamp.Timebase int timebase);



    private native final int native_get_active_microphones(

            ArrayList<MicrophoneInfo> activeMicrophones);



    //---------------------------------------------------------

    // Utility methods

    //------------------