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Commit a40baa4a authored by Andy Hung's avatar Andy Hung Committed by Automerger Merge Worker
Browse files

Merge "AudioFormat: Retrieve sample rate capability from framework" am: ba32f574 

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1700287

Change-Id: I2d56a1931bb32ef1890125bd7692dc3edc5f788b
parents 67143814 ba32f574

core/jni/android_media_AudioSystem.cpp

+11 −0
Original line number Diff line number Diff line
@@ -2277,6 +2277,15 @@ static jint android_media_AudioSystem_getMaxChannelCount(JNIEnv *env, jobject th 
    return FCC_8;

}



static jint android_media_AudioSystem_getMaxSampleRate(JNIEnv *env, jobject thiz) {

    // see frameworks/av/services/audiopolicy/common/include/policy.h

    return 192000; // SAMPLE_RATE_HZ_MAX (for API)

}



static jint android_media_AudioSystem_getMinSampleRate(JNIEnv *env, jobject thiz) {

    return 4000; // SAMPLE_RATE_HZ_MIN  (for API)

}



static jint

android_media_AudioSystem_setAssistantUid(JNIEnv *env, jobject thiz, jint uid)

{
@@ -2674,6 +2683,8 @@ static const JNINativeMethod gEventHandlerMethods[] = { 


static const JNINativeMethod gFrameworkCapabilities[] = {

        {"native_getMaxChannelCount", "()I", (void *)android_media_AudioSystem_getMaxChannelCount},

        {"native_getMaxSampleRate", "()I", (void *)android_media_AudioSystem_getMaxSampleRate},

        {"native_getMinSampleRate", "()I", (void *)android_media_AudioSystem_getMinSampleRate},

};



int register_android_media_AudioSystem(JNIEnv *env)

media/java/android/media/AudioFormat.java

+2 −2
Original line number Diff line number Diff line
@@ -518,13 +518,13 @@ public final class AudioFormat implements Parcelable { 
     * @hide

     */

    // never unhide

    public static final int SAMPLE_RATE_HZ_MIN = 4000;

    public static final int SAMPLE_RATE_HZ_MIN = AudioSystem.SAMPLE_RATE_HZ_MIN;

    /** Maximum value for sample rate,

     *  assuming AudioTrack and AudioRecord share the same limitations.

     * @hide

     */

    // never unhide

    public static final int SAMPLE_RATE_HZ_MAX = 192000;

    public static final int SAMPLE_RATE_HZ_MAX = AudioSystem.SAMPLE_RATE_HZ_MAX;

    /** Sample rate will be a route-dependent value.

     * For AudioTrack, it is usually the sink sample rate,

     * and for AudioRecord it is usually the source sample rate.

media/java/android/media/AudioSystem.java

+12 −0
Original line number Diff line number Diff line
@@ -115,6 +115,18 @@ public class AudioSystem 
    public static final int OUT_CHANNEL_COUNT_MAX = native_getMaxChannelCount();

    private static native int native_getMaxChannelCount();



    /** Maximum value for sample rate, used by AudioFormat.

     * @hide

     */

    public static final int SAMPLE_RATE_HZ_MAX = native_getMaxSampleRate();

    private static native int native_getMaxSampleRate();



    /** Minimum value for sample rate, used by AudioFormat.

     * @hide

     */

    public static final int SAMPLE_RATE_HZ_MIN = native_getMinSampleRate();

    private static native int native_getMinSampleRate();



    // Expose only the getter method publicly so we can change it in the future

    private static final int NUM_STREAM_TYPES = 12;