Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 667f8496 authored by Jan Sebechlebsky's avatar Jan Sebechlebsky
Browse files

Support virtual device specific audio session in TTS. 

When TextToSpeech is constructed using context asociated
with VirtualDevice instance configured with specific
audio playback session id, this change will propagate
the session id to TextToSpeech service.

This allows re-routing TTS audio from TTS playback triggered
from the apps running on virtual devices.

More details in go/if-xr-vdm-tts

Test: atest android.virtualdevice.cts.TextToSpeechTest
Bug: 275634941
Change-Id: I548ab5570119ab22996176c242f8bf22b99e9281
parent 741ed97a

core/java/android/speech/tts/TextToSpeech.java

+44 −0
Original line number Diff line number Diff line
@@ -15,12 +15,17 @@ 
 */

package android.speech.tts;



import static android.content.Context.DEVICE_ID_DEFAULT;

import static android.media.AudioManager.AUDIO_SESSION_ID_GENERATE;



import android.annotation.IntDef;

import android.annotation.NonNull;

import android.annotation.Nullable;

import android.annotation.RawRes;

import android.annotation.SdkConstant;

import android.annotation.SdkConstant.SdkConstantType;

import android.companion.virtual.VirtualDevice;

import android.companion.virtual.VirtualDeviceManager;

import android.compat.annotation.UnsupportedAppUsage;

import android.content.ComponentName;

import android.content.ContentResolver;
@@ -791,9 +796,48 @@ public class TextToSpeech { 


        mIsSystem = isSystem;



        addDeviceSpecificSessionIdToParams(mContext, mParams);

        initTts();

    }



    /**

     * Add {@link VirtualDevice} specific playback audio session associated with context to

     * parameters {@link Bundle} if applicable.

     *

     * @param context - {@link Context} context instance to extract the device specific audio

     *      session id from.

     * @param params - {@link Bundle} to add the device specific audio session id to.

     */

    private static void addDeviceSpecificSessionIdToParams(

            @NonNull Context context, @NonNull Bundle params) {

        int audioSessionId = getDeviceSpecificPlaybackSessionId(context);

        if (audioSessionId != AUDIO_SESSION_ID_GENERATE) {

            params.putInt(Engine.KEY_PARAM_SESSION_ID, audioSessionId);

        }

    }



    /**

     * Helper method to fetch {@link VirtualDevice} specific playback audio session id for given

     * {@link Context} instance.

     *

     * @param context - {@link Context} to fetch the audio sesion id for.

     * @return audio session id corresponding to {@link VirtualDevice} in case the context is

     *      associated with {@link VirtualDevice} configured with specific audio session id,

     *      {@link AudioManager#AUDIO_SESSION_ID_GENERATE} otherwise.

     * @see android.companion.virtual.VirtualDeviceManager#getAudioPlaybackSessionId(int)

     */

    private static int getDeviceSpecificPlaybackSessionId(@NonNull Context context) {

        int deviceId = context.getDeviceId();

        if (deviceId == DEVICE_ID_DEFAULT) {

            return AUDIO_SESSION_ID_GENERATE;

        }

        VirtualDeviceManager vdm = context.getSystemService(VirtualDeviceManager.class);

        if (vdm == null) {

            return AUDIO_SESSION_ID_GENERATE;

        }

        return vdm.getAudioPlaybackSessionId(deviceId);

    }



    private <R> R runActionNoReconnect(Action<R> action, R errorResult, String method,

            boolean onlyEstablishedConnection) {

        return runAction(action, errorResult, method, false, onlyEstablishedConnection);