AudioSystem: added JNI for routing extensions

Bug: 14815883.

Change-Id: Ia0c0d14a8e3051a4bc0ce502b6e979135b170c97

2 files changed, 1007 insertions, 1 deletions

diff --git a/core/jni/android_media_AudioFormat.h b/core/jni/android_media_AudioFormat.h
index fedb1b2..a2b1ed9 100644
--- a/core/jni/android_media_AudioFormat.h
+++ b/core/jni/android_media_AudioFormat.h
@@ -23,6 +23,11 @@
 #define ENCODING_PCM_16BIT 2
 #define ENCODING_PCM_8BIT  3
 #define ENCODING_PCM_FLOAT 4
+#define ENCODING_INVALID 0
+#define ENCODING_DEFAULT 1
+
+#define CHANNEL_INVALID 0
+#define CHANNEL_OUT_DEFAULT 1
 
 static inline audio_format_t audioFormatToNative(int audioFormat)
 {
@@ -33,9 +38,58 @@ static inline audio_format_t audioFormatToNative(int audioFormat)
         return AUDIO_FORMAT_PCM_8_BIT;
     case ENCODING_PCM_FLOAT:
         return AUDIO_FORMAT_PCM_FLOAT;
+    case ENCODING_DEFAULT:
+        return AUDIO_FORMAT_DEFAULT;
     default:
         return AUDIO_FORMAT_INVALID;
     }
 }
 
+static inline int audioFormatFromNative(audio_format_t nativeFormat)
+{
+    switch (nativeFormat) {
+    case AUDIO_FORMAT_PCM_16_BIT:
+        return ENCODING_PCM_16BIT;
+    case AUDIO_FORMAT_PCM_8_BIT:
+        return ENCODING_PCM_8BIT;
+    case AUDIO_FORMAT_PCM_FLOAT:
+        return ENCODING_PCM_FLOAT;
+    case AUDIO_FORMAT_DEFAULT:
+        return ENCODING_DEFAULT;
+    default:
+        return ENCODING_INVALID;
+    }
+}
+
+static inline audio_channel_mask_t outChannelMaskToNative(int channelMask)
+{
+    switch (channelMask) {
+    case CHANNEL_OUT_DEFAULT:
+    case CHANNEL_INVALID:
+        return AUDIO_CHANNEL_NONE;
+    default:
+        return (audio_channel_mask_t)(channelMask>>2);
+    }
+}
+
+static inline int outChannelMaskFromNative(audio_channel_mask_t nativeMask)
+{
+    switch (nativeMask) {
+    case AUDIO_CHANNEL_NONE:
+        return CHANNEL_OUT_DEFAULT;
+    default:
+        return (int)nativeMask<<2;
+    }
+}
+
+static inline audio_channel_mask_t inChannelMaskToNative(int channelMask)
+{
+    return (audio_channel_mask_t)channelMask;
+}
+
+static inline int inChannelMaskFromNative(audio_channel_mask_t nativeMask)
+{
+    return (int)nativeMask;
+}
+
 #endif // ANDROID_MEDIA_AUDIOFORMAT_H
diff --git a/core/jni/android_media_AudioSystem.cpp b/core/jni/android_media_AudioSystem.cpp
index a9a62f8..b6e450d 100644
--- a/core/jni/android_media_AudioSystem.cpp
+++ b/core/jni/android_media_AudioSystem.cpp
@@ -15,7 +15,7 @@
 ** limitations under the License.
 */
 
-#define LOG_TAG "AudioSystem"
+#define LOG_TAG "AudioSystem-JNI"
 #include <utils/Log.h>
 
 #include <jni.h>
@@ -26,6 +26,8 @@
 
 #include <system/audio.h>
 #include <system/audio_policy.h>
+#include "android_media_AudioFormat.h"
+#include "android_media_AudioErrors.h"
 
 // ----------------------------------------------------------------------------
 
@@ -33,12 +35,79 @@ using namespace android;
 
 static const char* const kClassPathName = "android/media/AudioSystem";
 
+static jclass gArrayListClass;
+static struct {
+    jmethodID    add;
+} gArrayListMethods;
+
+static jclass gAudioHandleClass;
+static jmethodID gAudioHandleCstor;
+static struct {
+    jfieldID    mId;
+} gAudioHandleFields;
+
+static jclass gAudioPortClass;
+static jmethodID gAudioPortCstor;
+static struct {
+    jfieldID    mHandle;
+    jfieldID    mRole;
+    jfieldID    mGains;
+    jfieldID    mActiveConfig;
+    // other fields unused by JNI
+} gAudioPortFields;
+
+static jclass gAudioPortConfigClass;
+static jmethodID gAudioPortConfigCstor;
+static struct {
+    jfieldID    mPort;
+    jfieldID    mSamplingRate;
+    jfieldID    mChannelMask;
+    jfieldID    mFormat;
+    jfieldID    mGain;
+} gAudioPortConfigFields;
+
+static jclass gAudioDevicePortClass;
+static jmethodID gAudioDevicePortCstor;
+
+static jclass gAudioDevicePortConfigClass;
+static jmethodID gAudioDevicePortConfigCstor;
+
+static jclass gAudioMixPortClass;
+static jmethodID gAudioMixPortCstor;
+
+static jclass gAudioMixPortConfigClass;
+static jmethodID gAudioMixPortConfigCstor;
+
+static jclass gAudioGainClass;
+static jmethodID gAudioGainCstor;
+
+static jclass gAudioGainConfigClass;
+static jmethodID gAudioGainConfigCstor;
+static struct {
+    jfieldID mIndex;
+    jfieldID mMode;
+    jfieldID mChannelMask;
+    jfieldID mValues;
+    jfieldID mRampDurationMs;
+    // other fields unused by JNI
+} gAudioGainConfigFields;
+
+static jclass gAudioPatchClass;
+static jmethodID gAudioPatchCstor;
+static struct {
+    jfieldID    mHandle;
+    // other fields unused by JNI
+} gAudioPatchFields;
+
+
 enum AudioError {
     kAudioStatusOk = 0,
     kAudioStatusError = 1,
     kAudioStatusMediaServerDied = 100
 };
 
+#define MAX_PORT_GENERATION_SYNC_ATTEMPTS 5
+
 static int check_AudioSystem_Command(status_t status)
 {
     switch (status) {
@@ -281,6 +350,801 @@ android_media_AudioSystem_checkAudioFlinger(JNIEnv *env, jobject clazz)
     return (jint) check_AudioSystem_Command(AudioSystem::checkAudioFlinger());
 }
 
+
+static bool useInChannelMask(audio_port_type_t type, audio_port_role_t role)
+{
+    return ((type == AUDIO_PORT_TYPE_DEVICE) && (role == AUDIO_PORT_ROLE_SOURCE)) ||
+                ((type == AUDIO_PORT_TYPE_MIX) && (role == AUDIO_PORT_ROLE_SINK));
+}
+
+static jint convertAudioPortConfigToNative(JNIEnv *env,
+                                               struct audio_port_config *nAudioPortConfig,
+                                               const jobject jAudioPortConfig)
+{
+    jobject jAudioPort = env->GetObjectField(jAudioPortConfig, gAudioPortConfigFields.mPort);
+    jobject jHandle = env->GetObjectField(jAudioPort, gAudioPortFields.mHandle);
+    nAudioPortConfig->id = env->GetIntField(jHandle, gAudioHandleFields.mId);
+    nAudioPortConfig->role = (audio_port_role_t)env->GetIntField(jAudioPort,
+                                                                 gAudioPortFields.mRole);
+    if (env->IsInstanceOf(jAudioPort, gAudioDevicePortClass)) {
+        nAudioPortConfig->type = AUDIO_PORT_TYPE_DEVICE;
+    } else if (env->IsInstanceOf(jAudioPort, gAudioMixPortClass)) {
+        nAudioPortConfig->type = AUDIO_PORT_TYPE_MIX;
+    } else {
+        env->DeleteLocalRef(jAudioPort);
+        env->DeleteLocalRef(jHandle);
+        return (jint)AUDIO_JAVA_ERROR;
+    }
+    ALOGV("convertAudioPortConfigToNative handle %d role %d type %d",
+          nAudioPortConfig->id, nAudioPortConfig->role, nAudioPortConfig->type);
+
+    nAudioPortConfig->sample_rate = env->GetIntField(jAudioPortConfig,
+                                                     gAudioPortConfigFields.mSamplingRate);
+
+    bool useInMask = useInChannelMask(nAudioPortConfig->type, nAudioPortConfig->role);
+    audio_channel_mask_t nMask;
+    jint jMask = env->GetIntField(jAudioPortConfig,
+                                   gAudioPortConfigFields.mChannelMask);
+    if (useInMask) {
+        nMask = inChannelMaskToNative(jMask);
+        ALOGV("convertAudioPortConfigToNative IN mask java %x native %x", jMask, nMask);
+    } else {
+        nMask = outChannelMaskToNative(jMask);
+        ALOGV("convertAudioPortConfigToNative OUT mask java %x native %x", jMask, nMask);
+    }
+    nAudioPortConfig->channel_mask = nMask;
+
+    jint jFormat = env->GetIntField(jAudioPortConfig, gAudioPortConfigFields.mFormat);
+    audio_format_t nFormat = audioFormatToNative(jFormat);
+    ALOGV("convertAudioPortConfigToNative format %d native %d", jFormat, nFormat);
+    nAudioPortConfig->format = nFormat;
+    jobject jGain = env->GetObjectField(jAudioPortConfig, gAudioPortConfigFields.mGain);
+    if (jGain != NULL) {
+        nAudioPortConfig->gain.index = env->GetIntField(jGain, gAudioGainConfigFields.mIndex);
+        nAudioPortConfig->gain.mode = env->GetIntField(jGain, gAudioGainConfigFields.mMode);
+        ALOGV("convertAudioPortConfigToNative got gain index %d", nAudioPortConfig->gain.index);
+        jMask = env->GetIntField(jGain, gAudioGainConfigFields.mChannelMask);
+        if (useInMask) {
+            nMask = inChannelMaskToNative(jMask);
+            ALOGV("convertAudioPortConfigToNative IN mask java %x native %x", jMask, nMask);
+        } else {
+            nMask = outChannelMaskToNative(jMask);
+            ALOGV("convertAudioPortConfigToNative OUT mask java %x native %x", jMask, nMask);
+        }
+
+        nAudioPortConfig->gain.channel_mask = nMask;
+        nAudioPortConfig->gain.ramp_duration_ms = env->GetIntField(jGain,
+                                                           gAudioGainConfigFields.mRampDurationMs);
+
+        jintArray jValues = (jintArray)env->GetObjectField(jGain, gAudioGainConfigFields.mValues);
+        int *values = env->GetIntArrayElements(jValues, NULL);
+        size_t size = env->GetArrayLength(jValues);
+        memcpy(nAudioPortConfig->gain.values, values, size * sizeof(int));
+        env->DeleteLocalRef(jValues);
+        env->DeleteLocalRef(jGain);
+    } else {
+        ALOGV("convertAudioPortConfigToNative no gain");
+        nAudioPortConfig->gain.index = -1;
+    }
+    env->DeleteLocalRef(jAudioPort);
+    env->DeleteLocalRef(jHandle);
+    return (jint)AUDIO_JAVA_SUCCESS;
+}
+
+static jint convertAudioPortConfigFromNative(JNIEnv *env,
+                                                 jobject jAudioPort,
+                                                 jobject *jAudioPortConfig,
+                                                 const struct audio_port_config *nAudioPortConfig)
+{
+    jint jStatus = AUDIO_JAVA_SUCCESS;
+    jobject jAudioGainConfig = NULL;
+    jobject jAudioGain = NULL;
+    jintArray jGainValues;
+    bool audioportCreated = false;
+
+    ALOGV("convertAudioPortConfigFromNative jAudioPort %p", jAudioPort);
+
+    if (jAudioPort == NULL) {
+        jobject jHandle = env->NewObject(gAudioHandleClass, gAudioHandleCstor,
+                                                 nAudioPortConfig->id);
+
+        ALOGV("convertAudioPortConfigFromNative handle %d is a %s", nAudioPortConfig->id,
+              nAudioPortConfig->type == AUDIO_PORT_TYPE_DEVICE ? "device" : "mix");
+
+        if (jHandle == NULL) {
+            return (jint)AUDIO_JAVA_ERROR;
+        }
+        // create dummy port and port config objects with just the correct handle
+        // and configuration data. The actual AudioPortConfig objects will be
+        // constructed by java code with correct class type (device, mix etc...)
+        // and reference to AudioPort instance in this client
+        jAudioPort = env->NewObject(gAudioPortClass, gAudioPortCstor,
+                                           jHandle,
+                                           0,
+                                           NULL,
+                                           NULL,
+                                           NULL,
+                                           NULL);
+        env->DeleteLocalRef(jHandle);
+        if (jAudioPort == NULL) {
+            return (jint)AUDIO_JAVA_ERROR;
+        }
+        ALOGV("convertAudioPortConfigFromNative jAudioPort created for handle %d",
+              nAudioPortConfig->id);
+
+        audioportCreated = true;
+    }
+
+    bool useInMask = useInChannelMask(nAudioPortConfig->type, nAudioPortConfig->role);
+
+    audio_channel_mask_t nMask;
+    jint jMask;
+
+    int gainIndex = nAudioPortConfig->gain.index;
+    if (gainIndex >= 0) {
+        ALOGV("convertAudioPortConfigFromNative gain found with index %d mode %x",
+              gainIndex, nAudioPortConfig->gain.mode);
+        if (audioportCreated) {
+            ALOGV("convertAudioPortConfigFromNative creating gain");
+            jAudioGain = env->NewObject(gAudioGainClass, gAudioGainCstor,
+                                               gainIndex,
+                                               0,
+                                               0,
+                                               0,
+                                               0,
+                                               0,
+                                               0,
+                                               0,
+                                               0);
+            if (jAudioGain == NULL) {
+                ALOGV("convertAudioPortConfigFromNative creating gain FAILED");
+                jStatus = (jint)AUDIO_JAVA_ERROR;
+                goto exit;
+            }
+        } else {
+            ALOGV("convertAudioPortConfigFromNative reading gain from port");
+            jobjectArray jGains = (jobjectArray)env->GetObjectField(jAudioPort,
+                                                                      gAudioPortFields.mGains);
+            if (jGains == NULL) {
+                ALOGV("convertAudioPortConfigFromNative could not get gains from port");
+                jStatus = (jint)AUDIO_JAVA_ERROR;
+                goto exit;
+            }
+            jAudioGain = env->GetObjectArrayElement(jGains, gainIndex);
+            env->DeleteLocalRef(jGains);
+            if (jAudioGain == NULL) {
+                ALOGV("convertAudioPortConfigFromNative could not get gain at index %d", gainIndex);
+                jStatus = (jint)AUDIO_JAVA_ERROR;
+                goto exit;
+            }
+        }
+        //TODO: replace popcount by audio utils function mask to count
+        int numValues = popcount(nAudioPortConfig->gain.channel_mask);
+        jGainValues = env->NewIntArray(numValues);
+        if (jGainValues == NULL) {
+            ALOGV("convertAudioPortConfigFromNative could not create gain values %d", numValues);
+            jStatus = (jint)AUDIO_JAVA_ERROR;
+            goto exit;
+        }
+        env->SetIntArrayRegion(jGainValues, 0, numValues,
+                               nAudioPortConfig->gain.values);
+
+        nMask = nAudioPortConfig->gain.channel_mask;
+        if (useInMask) {
+            jMask = inChannelMaskFromNative(nMask);
+            ALOGV("convertAudioPortConfigFromNative IN mask java %x native %x", jMask, nMask);
+        } else {
+            jMask = outChannelMaskFromNative(nMask);
+            ALOGV("convertAudioPortConfigFromNative OUT mask java %x native %x", jMask, nMask);
+        }
+
+        jAudioGainConfig = env->NewObject(gAudioGainConfigClass,
+                                        gAudioGainConfigCstor,
+                                        gainIndex,
+                                        jAudioGain,
+                                        nAudioPortConfig->gain.mode,
+                                        jMask,
+                                        jGainValues,
+                                        nAudioPortConfig->gain.ramp_duration_ms);
+        env->DeleteLocalRef(jGainValues);
+        if (jAudioGainConfig == NULL) {
+            ALOGV("convertAudioPortConfigFromNative could not create gain config");
+            jStatus = (jint)AUDIO_JAVA_ERROR;
+            goto exit;
+        }
+    }
+    jclass clazz;
+    jmethodID methodID;
+    if (audioportCreated) {
+        clazz = gAudioPortConfigClass;
+        methodID = gAudioPortConfigCstor;
+        ALOGV("convertAudioPortConfigFromNative building a generic port config");
+    } else {
+        if (env->IsInstanceOf(jAudioPort, gAudioDevicePortClass)) {
+            clazz = gAudioDevicePortConfigClass;
+            methodID = gAudioDevicePortConfigCstor;
+            ALOGV("convertAudioPortConfigFromNative building a device config");
+        } else if (env->IsInstanceOf(jAudioPort, gAudioMixPortClass)) {
+            clazz = gAudioMixPortConfigClass;
+            methodID = gAudioMixPortConfigCstor;
+            ALOGV("convertAudioPortConfigFromNative building a mix config");
+        } else {
+            jStatus = (jint)AUDIO_JAVA_ERROR;
+            goto exit;
+        }
+    }
+    nMask = nAudioPortConfig->channel_mask;
+    if (useInMask) {
+        jMask = inChannelMaskFromNative(nMask);
+        ALOGV("convertAudioPortConfigFromNative IN mask java %x native %x", jMask, nMask);
+    } else {
+        jMask = outChannelMaskFromNative(nMask);
+        ALOGV("convertAudioPortConfigFromNative OUT mask java %x native %x", jMask, nMask);
+    }
+
+    *jAudioPortConfig = env->NewObject(clazz, methodID,
+                                       jAudioPort,
+                                       nAudioPortConfig->sample_rate,
+                                       jMask,
+                                       audioFormatFromNative(nAudioPortConfig->format),
+                                       jAudioGainConfig);
+    if (*jAudioPortConfig == NULL) {
+        ALOGV("convertAudioPortConfigFromNative could not create new port config");
+        jStatus = (jint)AUDIO_JAVA_ERROR;
+    } else {
+        ALOGV("convertAudioPortConfigFromNative OK");
+    }
+
+exit:
+    if (audioportCreated) {
+        env->DeleteLocalRef(jAudioPort);
+        if (jAudioGain != NULL) {
+            env->DeleteLocalRef(jAudioGain);
+        }
+    }
+    if (jAudioGainConfig != NULL) {
+        env->DeleteLocalRef(jAudioGainConfig);
+    }
+    return jStatus;
+}
+
+
+static jint convertAudioPortFromNative(JNIEnv *env,
+                                           jobject *jAudioPort, const struct audio_port *nAudioPort)
+{
+    jint jStatus = (jint)AUDIO_JAVA_SUCCESS;
+    jintArray jSamplingRates = NULL;
+    jintArray jChannelMasks = NULL;
+    jintArray jFormats = NULL;
+    jobjectArray jGains = NULL;
+    jobject jHandle = NULL;
+    bool useInMask;
+
+    ALOGV("convertAudioPortFromNative id %d role %d type %d",
+                                  nAudioPort->id, nAudioPort->role, nAudioPort->type);
+
+    jSamplingRates = env->NewIntArray(nAudioPort->num_sample_rates);
+    if (jSamplingRates == NULL) {
+        jStatus = (jint)AUDIO_JAVA_ERROR;
+        goto exit;
+    }
+    if (nAudioPort->num_sample_rates) {
+        env->SetIntArrayRegion(jSamplingRates, 0, nAudioPort->num_sample_rates,
+                               (jint *)nAudioPort->sample_rates);
+    }
+
+    jChannelMasks = env->NewIntArray(nAudioPort->num_channel_masks);
+    if (jChannelMasks == NULL) {
+        jStatus = (jint)AUDIO_JAVA_ERROR;
+        goto exit;
+    }
+    useInMask = useInChannelMask(nAudioPort->type, nAudioPort->role);
+
+    jint jMask;
+    for (size_t j = 0; j < nAudioPort->num_channel_masks; j++) {
+        if (useInMask) {
+            jMask = inChannelMaskFromNative(nAudioPort->channel_masks[j]);
+        } else {
+            jMask = outChannelMaskFromNative(nAudioPort->channel_masks[j]);
+        }
+        env->SetIntArrayRegion(jChannelMasks, j, 1, &jMask);
+    }
+
+    jFormats = env->NewIntArray(nAudioPort->num_formats);
+    if (jFormats == NULL) {
+        jStatus = (jint)AUDIO_JAVA_ERROR;
+        goto exit;
+    }
+    for (size_t j = 0; j < nAudioPort->num_formats; j++) {
+        jint jFormat = audioFormatFromNative(nAudioPort->formats[j]);
+        env->SetIntArrayRegion(jFormats, j, 1, &jFormat);
+    }
+
+    jGains = env->NewObjectArray(nAudioPort->num_gains,
+                                          gAudioGainClass, NULL);
+    if (jGains == NULL) {
+        jStatus = (jint)AUDIO_JAVA_ERROR;
+        goto exit;
+    }
+    for (size_t j = 0; j < nAudioPort->num_gains; j++) {
+        audio_channel_mask_t nMask = nAudioPort->gains[j].channel_mask;
+        if (useInMask) {
+            jMask = inChannelMaskFromNative(nMask);
+            ALOGV("convertAudioPortConfigFromNative IN mask java %x native %x", jMask, nMask);
+        } else {
+            jMask = outChannelMaskFromNative(nMask);
+            ALOGV("convertAudioPortConfigFromNative OUT mask java %x native %x", jMask, nMask);
+        }
+
+        jobject jGain = env->NewObject(gAudioGainClass, gAudioGainCstor,
+                                                 j,
+                                                 nAudioPort->gains[j].mode,
+                                                 jMask,
+                                                 nAudioPort->gains[j].min_value,
+                                                 nAudioPort->gains[j].max_value,
+                                                 nAudioPort->gains[j].default_value,
+                                                 nAudioPort->gains[j].step_value,
+                                                 nAudioPort->gains[j].min_ramp_ms,
+                                                 nAudioPort->gains[j].max_ramp_ms);
+        if (jGain == NULL) {
+            jStatus = (jint)AUDIO_JAVA_ERROR;
+            goto exit;
+        }
+        env->SetObjectArrayElement(jGains, j, jGain);
+        env->DeleteLocalRef(jGain);
+    }
+
+    jHandle = env->NewObject(gAudioHandleClass, gAudioHandleCstor,
+                                             nAudioPort->id);
+    if (jHandle == NULL) {
+        jStatus = (jint)AUDIO_JAVA_ERROR;
+        goto exit;
+    }
+
+    if (nAudioPort->type == AUDIO_PORT_TYPE_DEVICE) {
+        ALOGV("convertAudioPortFromNative is a device %08x", nAudioPort->ext.device.type);
+        jstring jAddress = env->NewStringUTF(nAudioPort->ext.device.address);
+        *jAudioPort = env->NewObject(gAudioDevicePortClass, gAudioDevicePortCstor,
+                                     jHandle, jSamplingRates, jChannelMasks, jFormats, jGains,
+                                     nAudioPort->ext.device.type, jAddress);
+        env->DeleteLocalRef(jAddress);
+    } else if (nAudioPort->type == AUDIO_PORT_TYPE_MIX) {
+        ALOGV("convertAudioPortFromNative is a mix");
+        *jAudioPort = env->NewObject(gAudioMixPortClass, gAudioMixPortCstor,
+                                     jHandle, nAudioPort->role, jSamplingRates, jChannelMasks,
+                                     jFormats, jGains);
+    } else {
+        ALOGE("convertAudioPortFromNative unknown nAudioPort type %d", nAudioPort->type);
+        jStatus = (jint)AUDIO_JAVA_ERROR;
+        goto exit;
+    }
+    if (*jAudioPort == NULL) {
+        jStatus = (jint)AUDIO_JAVA_ERROR;
+        goto exit;
+    }
+
+    jobject jAudioPortConfig;
+    jStatus = convertAudioPortConfigFromNative(env,
+                                                       *jAudioPort,
+                                                       &jAudioPortConfig,
+                                                       &nAudioPort->active_config);
+    if (jStatus != AUDIO_JAVA_SUCCESS) {
+        return jStatus;
+    }
+
+    env->SetObjectField(*jAudioPort, gAudioPortFields.mActiveConfig, jAudioPortConfig);
+
+exit:
+    if (jSamplingRates != NULL) {
+        env->DeleteLocalRef(jSamplingRates);
+    }
+    if (jChannelMasks != NULL) {
+        env->DeleteLocalRef(jChannelMasks);
+    }
+    if (jFormats != NULL) {
+        env->DeleteLocalRef(jFormats);
+    }
+    if (jGains != NULL) {
+        env->DeleteLocalRef(jGains);
+    }
+    if (jHandle != NULL) {
+        env->DeleteLocalRef(jHandle);
+    }
+
+    return jStatus;
+}
+
+
+static jint
+android_media_AudioSystem_listAudioPorts(JNIEnv *env, jobject clazz,
+                                         jobject jPorts, jintArray jGeneration)
+{
+    ALOGV("listAudioPorts");
+
+    if (jPorts == NULL) {
+        ALOGE("listAudioPorts NULL AudioPort ArrayList");
+        return (jint)AUDIO_JAVA_BAD_VALUE;
+    }
+    if (!env->IsInstanceOf(jPorts, gArrayListClass)) {
+        ALOGE("listAudioPorts not an arraylist");
+        return (jint)AUDIO_JAVA_BAD_VALUE;
+    }
+
+    if (jGeneration == NULL || env->GetArrayLength(jGeneration) != 1) {
+        return (jint)AUDIO_JAVA_BAD_VALUE;
+    }
+
+    status_t status;
+    unsigned int generation1;
+    unsigned int generation;
+    unsigned int numPorts;
+    jint *nGeneration;
+    struct audio_port *nPorts = NULL;
+    int attempts = MAX_PORT_GENERATION_SYNC_ATTEMPTS;
+
+    // get the port count and all the ports until they both return the same generation
+    do {
+        if (attempts-- < 0) {
+            status = TIMED_OUT;
+            break;
+        }
+
+        numPorts = 0;
+        status = AudioSystem::listAudioPorts(AUDIO_PORT_ROLE_NONE,
+                                             AUDIO_PORT_TYPE_NONE,
+                                                      &numPorts,
+                                                      NULL,
+                                                      &generation1);
+        if (status != NO_ERROR || numPorts == 0) {
+            ALOGE_IF(status != NO_ERROR, "AudioSystem::listAudioPorts error %d", status);
+            break;
+        }
+        nPorts = (struct audio_port *)realloc(nPorts, numPorts * sizeof(struct audio_port));
+
+        status = AudioSystem::listAudioPorts(AUDIO_PORT_ROLE_NONE,
+                                             AUDIO_PORT_TYPE_NONE,
+                                                      &numPorts,
+                                                      nPorts,
+                                                      &generation);
+        ALOGV("listAudioPorts AudioSystem::listAudioPorts numPorts %d generation %d generation1 %d",
+              numPorts, generation, generation1);
+    } while (generation1 != generation && status == NO_ERROR);
+
+    jint jStatus = nativeToJavaStatus(status);
+    if (jStatus != AUDIO_JAVA_SUCCESS) {
+        goto exit;
+    }
+
+    nGeneration = env->GetIntArrayElements(jGeneration, NULL);
+    if (nGeneration == NULL) {
+        jStatus = (jint)AUDIO_JAVA_ERROR;
+        goto exit;
+    }
+    nGeneration[0] = generation1;
+    env->ReleaseIntArrayElements(jGeneration, nGeneration, 0);
+
+    for (size_t i = 0; i < numPorts; i++) {
+        jobject jAudioPort;
+        jStatus = convertAudioPortFromNative(env, &jAudioPort, &nPorts[i]);
+        if (jStatus != AUDIO_JAVA_SUCCESS) {
+            goto exit;
+        }
+        env->CallBooleanMethod(jPorts, gArrayListMethods.add, jAudioPort);
+    }
+
+exit:
+    free(nPorts);
+    return jStatus;
+}
+
+static int
+android_media_AudioSystem_createAudioPatch(JNIEnv *env, jobject clazz,
+                                 jobjectArray jPatches, jobjectArray jSources, jobjectArray jSinks)
+{
+    status_t status;
+    jint jStatus;
+
+    ALOGV("createAudioPatch");
+    if (jPatches == NULL || jSources == NULL || jSinks == NULL) {
+        return (jint)AUDIO_JAVA_BAD_VALUE;
+    }
+
+    if (env->GetArrayLength(jPatches) != 1) {
+        return (jint)AUDIO_JAVA_BAD_VALUE;
+    }
+    jint numSources = env->GetArrayLength(jSources);
+    if (numSources == 0 || numSources > AUDIO_PATCH_PORTS_MAX) {
+        return (jint)AUDIO_JAVA_BAD_VALUE;
+    }
+
+    jint numSinks = env->GetArrayLength(jSinks);
+    if (numSinks == 0 || numSinks > AUDIO_PATCH_PORTS_MAX) {
+        return (jint)AUDIO_JAVA_BAD_VALUE;
+    }
+
+    audio_patch_handle_t handle = (audio_patch_handle_t)0;
+    jobject jPatch = env->GetObjectArrayElement(jPatches, 0);
+    jobject jPatchHandle = NULL;
+    if (jPatch != NULL) {
+        if (!env->IsInstanceOf(jPatch, gAudioPatchClass)) {
+            return (jint)AUDIO_JAVA_BAD_VALUE;
+        }
+        jPatchHandle = env->GetObjectField(jPatch, gAudioPatchFields.mHandle);
+        handle = (audio_patch_handle_t)env->GetIntField(jPatchHandle, gAudioHandleFields.mId);
+    }
+
+    struct audio_patch nPatch;
+
+    nPatch.id = handle;
+    nPatch.num_sources = 0;
+    nPatch.num_sinks = 0;
+    jobject jSource = NULL;
+    jobject jSink = NULL;
+
+    for (jint i = 0; i < numSources; i++) {
+        jSource = env->GetObjectArrayElement(jSources, i);
+        if (!env->IsInstanceOf(jSource, gAudioPortConfigClass)) {
+            jStatus = (jint)AUDIO_JAVA_BAD_VALUE;
+            goto exit;
+        }
+        jStatus = convertAudioPortConfigToNative(env, &nPatch.sources[i], jSource);
+        env->DeleteLocalRef(jSource);
+        jSource = NULL;
+        if (jStatus != AUDIO_JAVA_SUCCESS) {
+            goto exit;
+        }
+        nPatch.num_sources++;
+    }
+
+    for (jint i = 0; i < numSinks; i++) {
+        jSink = env->GetObjectArrayElement(jSinks, i);
+        if (!env->IsInstanceOf(jSink, gAudioPortConfigClass)) {
+            jStatus = (jint)AUDIO_JAVA_BAD_VALUE;
+            goto exit;
+        }
+        jStatus = convertAudioPortConfigToNative(env, &nPatch.sinks[i], jSink);
+        env->DeleteLocalRef(jSink);
+        jSink = NULL;
+        if (jStatus != AUDIO_JAVA_SUCCESS) {
+            goto exit;
+        }
+        nPatch.num_sinks++;
+    }
+
+    ALOGV("AudioSystem::createAudioPatch");
+    status = AudioSystem::createAudioPatch(&nPatch, &handle);
+    ALOGV("AudioSystem::createAudioPatch() returned %d hande %d", status, handle);
+
+    jStatus = nativeToJavaStatus(status);
+    if (jStatus != AUDIO_JAVA_SUCCESS) {
+        goto exit;
+    }
+
+    if (jPatchHandle == NULL) {
+        jPatchHandle = env->NewObject(gAudioHandleClass, gAudioHandleCstor,
+                                           handle);
+        if (jPatchHandle == NULL) {
+            jStatus = (jint)AUDIO_JAVA_ERROR;
+            goto exit;
+        }
+        jPatch = env->NewObject(gAudioPatchClass, gAudioPatchCstor, jPatchHandle, jSources, jSinks);
+        if (jPatch == NULL) {
+            jStatus = (jint)AUDIO_JAVA_ERROR;
+            goto exit;
+        }
+        env->SetObjectArrayElement(jPatches, 0, jPatch);
+    } else {
+        env->SetIntField(jPatchHandle, gAudioHandleFields.mId, handle);
+    }
+
+exit:
+    if (jPatchHandle != NULL) {
+        env->DeleteLocalRef(jPatchHandle);
+    }
+    if (jPatch != NULL) {
+        env->DeleteLocalRef(jPatch);
+    }
+    if (jSource != NULL) {
+        env->DeleteLocalRef(jSource);
+    }
+    if (jSink != NULL) {
+        env->DeleteLocalRef(jSink);
+    }
+    return jStatus;
+}
+
+static int
+android_media_AudioSystem_releaseAudioPatch(JNIEnv *env, jobject clazz,
+                                               jobject jPatch)
+{
+    ALOGV("releaseAudioPatch");
+    if (jPatch == NULL) {
+        return (jint)AUDIO_JAVA_BAD_VALUE;
+    }
+
+    audio_patch_handle_t handle = (audio_patch_handle_t)0;
+    jobject jPatchHandle = NULL;
+    if (!env->IsInstanceOf(jPatch, gAudioPatchClass)) {
+        return (jint)AUDIO_JAVA_BAD_VALUE;
+    }
+    jPatchHandle = env->GetObjectField(jPatch, gAudioPatchFields.mHandle);
+    handle = (audio_patch_handle_t)env->GetIntField(jPatchHandle, gAudioHandleFields.mId);
+    env->DeleteLocalRef(jPatchHandle);
+
+    ALOGV("AudioSystem::releaseAudioPatch");
+    status_t status = AudioSystem::releaseAudioPatch(handle);
+    ALOGV("AudioSystem::releaseAudioPatch() returned %d", status);
+    jint jStatus = nativeToJavaStatus(status);
+    return status;
+}
+
+static jint
+android_media_AudioSystem_listAudioPatches(JNIEnv *env, jobject clazz,
+                                           jobject jPatches, jintArray jGeneration)
+{
+    ALOGV("listAudioPatches");
+    if (jPatches == NULL) {
+        ALOGE("listAudioPatches NULL AudioPatch ArrayList");
+        return (jint)AUDIO_JAVA_BAD_VALUE;
+    }
+    if (!env->IsInstanceOf(jPatches, gArrayListClass)) {
+        ALOGE("listAudioPatches not an arraylist");
+        return (jint)AUDIO_JAVA_BAD_VALUE;
+    }
+
+    if (jGeneration == NULL || env->GetArrayLength(jGeneration) != 1) {
+        return (jint)AUDIO_JAVA_BAD_VALUE;
+    }
+
+    status_t status;
+    unsigned int generation1;
+    unsigned int generation;
+    unsigned int numPatches;
+    jint *nGeneration;
+    struct audio_patch *nPatches = NULL;
+    jobjectArray jSources = NULL;
+    jobject jSource = NULL;
+    jobjectArray jSinks = NULL;
+    jobject jSink = NULL;
+    jobject jPatch = NULL;
+    int attempts = MAX_PORT_GENERATION_SYNC_ATTEMPTS;
+
+    // get the patch count and all the patches until they both return the same generation
+    do {
+        if (attempts-- < 0) {
+            status = TIMED_OUT;
+            break;
+        }
+
+        numPatches = 0;
+        status = AudioSystem::listAudioPatches(&numPatches,
+                                               NULL,
+                                               &generation1);
+        if (status != NO_ERROR || numPatches == 0) {
+            ALOGE_IF(status != NO_ERROR, "listAudioPatches AudioSystem::listAudioPatches error %d",
+                                      status);
+            break;
+        }
+        nPatches = (struct audio_patch *)realloc(nPatches, numPatches * sizeof(struct audio_patch));
+
+        status = AudioSystem::listAudioPatches(&numPatches,
+                                               nPatches,
+                                               &generation);
+        ALOGV("listAudioPatches AudioSystem::listAudioPatches numPatches %d generation %d generation1 %d",
+              numPatches, generation, generation1);
+
+    } while (generation1 != generation && status == NO_ERROR);
+
+    jint jStatus = nativeToJavaStatus(status);
+    if (jStatus != AUDIO_JAVA_SUCCESS) {
+        goto exit;
+    }
+
+    nGeneration = env->GetIntArrayElements(jGeneration, NULL);
+    if (nGeneration == NULL) {
+        jStatus = AUDIO_JAVA_ERROR;
+        goto exit;
+    }
+    nGeneration[0] = generation1;
+    env->ReleaseIntArrayElements(jGeneration, nGeneration, 0);
+
+    for (size_t i = 0; i < numPatches; i++) {
+        jobject patchHandle = env->NewObject(gAudioHandleClass, gAudioHandleCstor,
+                                                 nPatches[i].id);
+        if (patchHandle == NULL) {
+            jStatus = AUDIO_JAVA_ERROR;
+            goto exit;
+        }
+        ALOGV("listAudioPatches patch %d num_sources %d num_sinks %d",
+              i, nPatches[i].num_sources, nPatches[i].num_sinks);
+
+        env->SetIntField(patchHandle, gAudioHandleFields.mId, nPatches[i].id);
+
+        // load sources
+        jSources = env->NewObjectArray(nPatches[i].num_sources,
+                                       gAudioPortConfigClass, NULL);
+        if (jSources == NULL) {
+            jStatus = AUDIO_JAVA_ERROR;
+            goto exit;
+        }
+
+        for (size_t j = 0; j < nPatches[i].num_sources; j++) {
+            jStatus = convertAudioPortConfigFromNative(env,
+                                                      NULL,
+                                                      &jSource,
+                                                      &nPatches[i].sources[j]);
+            if (jStatus != AUDIO_JAVA_SUCCESS) {
+                goto exit;
+            }
+            env->SetObjectArrayElement(jSources, j, jSource);
+            env->DeleteLocalRef(jSource);
+            jSource = NULL;
+            ALOGV("listAudioPatches patch %d source %d is a %s handle %d",
+                  i, j,
+                  nPatches[i].sources[j].type == AUDIO_PORT_TYPE_DEVICE ? "device" : "mix",
+                  nPatches[i].sources[j].id);
+        }
+        // load sinks
+        jSinks = env->NewObjectArray(nPatches[i].num_sinks,
+                                     gAudioPortConfigClass, NULL);
+        if (jSinks == NULL) {
+            jStatus = AUDIO_JAVA_ERROR;
+            goto exit;
+        }
+
+        for (size_t j = 0; j < nPatches[i].num_sinks; j++) {
+            jStatus = convertAudioPortConfigFromNative(env,
+                                                      NULL,
+                                                      &jSink,
+                                                      &nPatches[i].sinks[j]);
+
+            if (jStatus != AUDIO_JAVA_SUCCESS) {
+                goto exit;
+            }
+            env->SetObjectArrayElement(jSinks, j, jSink);
+            env->DeleteLocalRef(jSink);
+            jSink = NULL;
+            ALOGV("listAudioPatches patch %d sink %d is a %s handle %d",
+                  i, j,
+                  nPatches[i].sinks[j].type == AUDIO_PORT_TYPE_DEVICE ? "device" : "mix",
+                  nPatches[i].sinks[j].id);
+        }
+
+        jPatch = env->NewObject(gAudioPatchClass, gAudioPatchCstor,
+                                       patchHandle, jSources, jSinks);
+        env->DeleteLocalRef(jSources);
+        jSources = NULL;
+        env->DeleteLocalRef(jSinks);
+        jSinks = NULL;
+        if (jPatch == NULL) {
+            jStatus = AUDIO_JAVA_ERROR;
+            goto exit;
+        }
+        env->CallBooleanMethod(jPatches, gArrayListMethods.add, jPatch);
+        env->DeleteLocalRef(jPatch);
+        jPatch = NULL;
+    }
+
+exit:
+    if (jSources != NULL) {
+        env->DeleteLocalRef(jSources);
+    }
+    if (jSource != NULL) {
+        env->DeleteLocalRef(jSource);
+    }
+    if (jSinks != NULL) {
+        env->DeleteLocalRef(jSinks);
+    }
+    if (jSink != NULL) {
+        env->DeleteLocalRef(jSink);
+    }
+    if (jPatch != NULL) {
+        env->DeleteLocalRef(jPatch);
+    }
+    free(nPatches);
+    return jStatus;
+}
+
 // ----------------------------------------------------------------------------
 
 static JNINativeMethod gMethods[] = {
@@ -309,10 +1173,98 @@ static JNINativeMethod gMethods[] = {
     {"getOutputLatency",    "(I)I",     (void *)android_media_AudioSystem_getOutputLatency},
     {"setLowRamDevice",     "(Z)I",     (void *)android_media_AudioSystem_setLowRamDevice},
     {"checkAudioFlinger",    "()I",     (void *)android_media_AudioSystem_checkAudioFlinger},
+    {"listAudioPorts",      "(Ljava/util/ArrayList;[I)I",
+                                                (void *)android_media_AudioSystem_listAudioPorts},
+    {"createAudioPatch",    "([Landroid/media/AudioPatch;[Landroid/media/AudioPortConfig;[Landroid/media/AudioPortConfig;)I",
+                                            (void *)android_media_AudioSystem_createAudioPatch},
+    {"releaseAudioPatch",   "(Landroid/media/AudioPatch;)I",
+                                            (void *)android_media_AudioSystem_releaseAudioPatch},
+    {"listAudioPatches",    "(Ljava/util/ArrayList;[I)I",
+                                                (void *)android_media_AudioSystem_listAudioPatches},
 };
 
+
 int register_android_media_AudioSystem(JNIEnv *env)
 {
+
+    jclass arrayListClass = env->FindClass("java/util/ArrayList");
+    gArrayListClass = (jclass) env->NewGlobalRef(arrayListClass);
+    gArrayListMethods.add = env->GetMethodID(arrayListClass, "add", "(Ljava/lang/Object;)Z");
+
+    jclass audioHandleClass = env->FindClass("android/media/AudioHandle");
+    gAudioHandleClass = (jclass) env->NewGlobalRef(audioHandleClass);
+    gAudioHandleCstor = env->GetMethodID(audioHandleClass, "<init>", "(I)V");
+    gAudioHandleFields.mId = env->GetFieldID(audioHandleClass, "mId", "I");
+
+    jclass audioPortClass = env->FindClass("android/media/AudioPort");
+    gAudioPortClass = (jclass) env->NewGlobalRef(audioPortClass);
+    gAudioPortCstor = env->GetMethodID(audioPortClass, "<init>",
+                               "(Landroid/media/AudioHandle;I[I[I[I[Landroid/media/AudioGain;)V");
+    gAudioPortFields.mHandle = env->GetFieldID(audioPortClass, "mHandle",
+                                               "Landroid/media/AudioHandle;");
+    gAudioPortFields.mRole = env->GetFieldID(audioPortClass, "mRole", "I");
+    gAudioPortFields.mGains = env->GetFieldID(audioPortClass, "mGains",
+                                              "[Landroid/media/AudioGain;");
+    gAudioPortFields.mActiveConfig = env->GetFieldID(audioPortClass, "mActiveConfig",
+                                              "Landroid/media/AudioPortConfig;");
+
+    jclass audioPortConfigClass = env->FindClass("android/media/AudioPortConfig");
+    gAudioPortConfigClass = (jclass) env->NewGlobalRef(audioPortConfigClass);
+    gAudioPortConfigCstor = env->GetMethodID(audioPortConfigClass, "<init>",
+                                 "(Landroid/media/AudioPort;IIILandroid/media/AudioGainConfig;)V");
+    gAudioPortConfigFields.mPort = env->GetFieldID(audioPortConfigClass, "mPort",
+                                                   "Landroid/media/AudioPort;");
+    gAudioPortConfigFields.mSamplingRate = env->GetFieldID(audioPortConfigClass,
+                                                           "mSamplingRate", "I");
+    gAudioPortConfigFields.mChannelMask = env->GetFieldID(audioPortConfigClass,
+                                                          "mChannelMask", "I");
+    gAudioPortConfigFields.mFormat = env->GetFieldID(audioPortConfigClass, "mFormat", "I");
+    gAudioPortConfigFields.mGain = env->GetFieldID(audioPortConfigClass, "mGain",
+                                                   "Landroid/media/AudioGainConfig;");
+
+    jclass audioDevicePortConfigClass = env->FindClass("android/media/AudioDevicePortConfig");
+    gAudioDevicePortConfigClass = (jclass) env->NewGlobalRef(audioDevicePortConfigClass);
+    gAudioDevicePortConfigCstor = env->GetMethodID(audioDevicePortConfigClass, "<init>",
+                         "(Landroid/media/AudioDevicePort;IIILandroid/media/AudioGainConfig;)V");
+
+    jclass audioMixPortConfigClass = env->FindClass("android/media/AudioMixPortConfig");
+    gAudioMixPortConfigClass = (jclass) env->NewGlobalRef(audioMixPortConfigClass);
+    gAudioMixPortConfigCstor = env->GetMethodID(audioMixPortConfigClass, "<init>",
+                         "(Landroid/media/AudioMixPort;IIILandroid/media/AudioGainConfig;)V");
+
+    jclass audioDevicePortClass = env->FindClass("android/media/AudioDevicePort");
+    gAudioDevicePortClass = (jclass) env->NewGlobalRef(audioDevicePortClass);
+    gAudioDevicePortCstor = env->GetMethodID(audioDevicePortClass, "<init>",
+             "(Landroid/media/AudioHandle;[I[I[I[Landroid/media/AudioGain;ILjava/lang/String;)V");
+
+    jclass audioMixPortClass = env->FindClass("android/media/AudioMixPort");
+    gAudioMixPortClass = (jclass) env->NewGlobalRef(audioMixPortClass);
+    gAudioMixPortCstor = env->GetMethodID(audioMixPortClass, "<init>",
+                              "(Landroid/media/AudioHandle;I[I[I[I[Landroid/media/AudioGain;)V");
+
+    jclass audioGainClass = env->FindClass("android/media/AudioGain");
+    gAudioGainClass = (jclass) env->NewGlobalRef(audioGainClass);
+    gAudioGainCstor = env->GetMethodID(audioGainClass, "<init>", "(IIIIIIIII)V");
+
+    jclass audioGainConfigClass = env->FindClass("android/media/AudioGainConfig");
+    gAudioGainConfigClass = (jclass) env->NewGlobalRef(audioGainConfigClass);
+    gAudioGainConfigCstor = env->GetMethodID(audioGainConfigClass, "<init>",
+                                             "(ILandroid/media/AudioGain;II[II)V");
+    gAudioGainConfigFields.mIndex = env->GetFieldID(gAudioGainConfigClass, "mIndex", "I");
+    gAudioGainConfigFields.mMode = env->GetFieldID(audioGainConfigClass, "mMode", "I");
+    gAudioGainConfigFields.mChannelMask = env->GetFieldID(audioGainConfigClass, "mChannelMask",
+                                                          "I");
+    gAudioGainConfigFields.mValues = env->GetFieldID(audioGainConfigClass, "mValues", "[I");
+    gAudioGainConfigFields.mRampDurationMs = env->GetFieldID(audioGainConfigClass,
+                                                             "mRampDurationMs", "I");
+
+    jclass audioPatchClass = env->FindClass("android/media/AudioPatch");
+    gAudioPatchClass = (jclass) env->NewGlobalRef(audioPatchClass);
+    gAudioPatchCstor = env->GetMethodID(audioPatchClass, "<init>",
+"(Landroid/media/AudioHandle;[Landroid/media/AudioPortConfig;[Landroid/media/AudioPortConfig;)V");
+    gAudioPatchFields.mHandle = env->GetFieldID(audioPatchClass, "mHandle",
+                                                "Landroid/media/AudioHandle;");
+
     AudioSystem::setErrorCallback(android_media_AudioSystem_error_callback);
 
     return AndroidRuntime::registerNativeMethods(env,