Add open-source libsecril-client from android_hardware_samsung

5 files changed, 1923 insertions, 0 deletions

diff --git a/device.mk b/device.mk
index f8cc67e..e437cb9 100755
--- a/device.mk
+++ b/device.mk
@@ -41,6 +41,10 @@ PRODUCT_PACKAGES += \
 	power.tuna \
 	audio.primary.tuna
 
+# RIL
+PRODUCT_PACKAGES += \
+	libsecril-client
+
 # Sensors
 PRODUCT_PACKAGES += \
 	sensors.tuna \
diff --git a/ril/Android.mk b/ril/Android.mk
new file mode 100644
index 0000000..98c2e6f
--- /dev/null
+++ b/ril/Android.mk
@@ -0,0 +1,20 @@
+#
+# Copyright (C) 2013 The Android Open-Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+RIL_PATH := $(call my-dir)
+
+# ril client
+include $(RIL_PATH)/libsecril-client/Android.mk
diff --git a/ril/libsecril-client/Android.mk b/ril/libsecril-client/Android.mk
new file mode 100644
index 0000000..8518abd
--- /dev/null
+++ b/ril/libsecril-client/Android.mk
@@ -0,0 +1,21 @@
+# Copyright 2006 The Android Open Source Project
+
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+LOCAL_MODULE_TAGS := eng
+
+LOCAL_SRC_FILES:= \
+    secril-client.cpp
+
+LOCAL_SHARED_LIBRARIES := \
+    libutils \
+    libbinder \
+    libcutils \
+    libhardware_legacy
+
+LOCAL_CFLAGS := 
+
+LOCAL_MODULE:= libsecril-client
+LOCAL_PRELINK_MODULE := false
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/ril/libsecril-client/secril-client.cpp b/ril/libsecril-client/secril-client.cpp
new file mode 100644
index 0000000..61f046d
--- /dev/null
+++ b/ril/libsecril-client/secril-client.cpp
@@ -0,0 +1,1585 @@
+/**
+ * @file    secril-client.cpp
+ *
+ * @author  Myeongcheol Kim (mcmount.kim@samsung.com)
+ *
+ * @brief   RIL client library for multi-client support
+ */
+
+#define LOG_TAG "RILClient"
+#define LOG_NDEBUG 0
+
+#include <binder/Parcel.h>
+#include <telephony/ril.h>
+#include <cutils/record_stream.h>
+
+#include <unistd.h>
+#include <errno.h>
+#include <cutils/sockets.h>
+#include <netinet/in.h>
+#include <sys/types.h>
+#include <string.h>
+#include <fcntl.h>
+#include <utils/Log.h>
+#include <pthread.h>
+#include "secril-client.h"
+#include <hardware_legacy/power.h> // For wakelock
+
+
+#define RIL_CLIENT_WAKE_LOCK "client-interface"
+
+namespace android {
+
+//---------------------------------------------------------------------------
+// Defines
+//---------------------------------------------------------------------------
+#define DBG 1
+#define RILD_PORT               7777
+#define MULTI_CLIENT_SOCKET_NAME "Multiclient"
+#define MULTI_CLIENT_Q_SOCKET_NAME "QMulticlient"
+#if defined(SEC_PRODUCT_FEATURE_RIL_CALL_DUALMODE_CDMAGSM)
+#define MULTI_CLIENT_SOCKET_NAME_2 "Multiclient2"
+#endif
+
+#define MAX_COMMAND_BYTES       (8 * 1024)
+#define REQ_POOL_SIZE           32
+#define TOKEN_POOL_SIZE         32
+
+// Constants for response types
+#define RESPONSE_SOLICITED      0
+#define RESPONSE_UNSOLICITED    1
+
+#define max(a, b)   ((a) > (b) ? (a) : (b))
+
+#define REQ_OEM_HOOK_RAW        RIL_REQUEST_OEM_HOOK_RAW
+#define REQ_SET_CALL_VOLUME     101
+#define REQ_SET_AUDIO_PATH      102
+#define REQ_SET_CALL_CLOCK_SYNC 103
+#define REQ_SET_CALL_RECORDING  104
+#define REQ_SET_CALL_MUTE           105
+#define REQ_GET_CALL_MUTE           106
+#define REQ_SET_CALL_VT_CTRL        107
+#define REQ_SET_TWO_MIC_CTRL        108
+#define REQ_SET_DHA_CTRL        109
+#define REQ_SET_LOOPBACK            110
+
+// OEM request function ID
+#define OEM_FUNC_SOUND          0x08
+
+// OEM request sub function ID
+#define OEM_SND_SET_VOLUME_CTRL     0x03
+#define OEM_SND_SET_AUDIO_PATH      0x05
+#define OEM_SND_GET_AUDIO_PATH      0x06
+#define OEM_SND_SET_VIDEO_CALL_CTRL 0x07
+#define OEM_SND_SET_LOOPBACK_CTRL 0x08
+#define OEM_SND_SET_VOICE_RECORDING_CTRL  0x09
+#define OEM_SND_SET_CLOCK_CTRL      0x0A
+#define OEM_SND_SET_MUTE        0x0B
+#define OEM_SND_GET_MUTE        0x0C
+#define OEM_SND_SET_TWO_MIC_CTL     0x0D
+#define OEM_SND_SET_DHA_CTL     0x0E
+
+#define OEM_SND_TYPE_VOICE          0x01 // Receiver(0x00) + Voice(0x01)
+#define OEM_SND_TYPE_SPEAKER        0x11 // SpeakerPhone(0x10) + Voice(0x01)
+#define OEM_SND_TYPE_HEADSET        0x31 // Headset(0x30) + Voice(0x01)
+#define OEM_SND_TYPE_BTVOICE        0x41 // BT(0x40) + Voice(0x01)
+
+#ifdef MODEM_TYPE_XMM7260
+#define OEM_SND_AUDIO_PATH_HANDSET            0x01
+#define OEM_SND_AUDIO_PATH_HEADSET            0x02
+#define OEM_SND_AUDIO_PATH_HFK                0x06
+#define OEM_SND_AUDIO_PATH_BLUETOOTH          0x04
+#define OEM_SND_AUDIO_PATH_STEREO_BLUETOOTH   0x05
+#define OEM_SND_AUDIO_PATH_SPEAKER            0x07
+#define OEM_SND_AUDIO_PATH_HEADPHONE          0x08
+#define OEM_SND_AUDIO_PATH_BT_NSEC_OFF        0x09
+#define OEM_SND_AUDIO_PATH_MIC1               0x0A
+#define OEM_SND_AUDIO_PATH_MIC2               0x0B
+#define OEM_SND_AUDIO_PATH_BT_WB              0x0C
+#define OEM_SND_AUDIO_PATH_BT_WB_NSEC_OFF     0x0D
+#else
+#define OEM_SND_AUDIO_PATH_HANDSET      0x01
+#define OEM_SND_AUDIO_PATH_HEADSET      0x02
+#define OEM_SND_AUDIO_PATH_HFK                0x03
+#define OEM_SND_AUDIO_PATH_BLUETOOTH    0x04
+#define OEM_SND_AUDIO_PATH_STEREO_BLUETOOTH   0x05
+#define OEM_SND_AUDIO_PATH_SPEAKER      0x06
+#define OEM_SND_AUDIO_PATH_HEADPHONE      0x07
+#define OEM_SND_AUDIO_PATH_BT_NSEC_OFF  0x08
+#define OEM_SND_AUDIO_PATH_MIC1 0x09
+#define OEM_SND_AUDIO_PATH_MIC2 0x0A
+#define OEM_SND_AUDIO_PATH_BT_WB  0x0B
+#define OEM_SND_AUDIO_PATH_BT_WB_NSEC_OFF  0x0C
+#endif
+
+//---------------------------------------------------------------------------
+// Type definitions
+//---------------------------------------------------------------------------
+typedef struct _ReqHistory {
+    int         token;  // token used for request
+    uint32_t    id;     // request ID
+} ReqHistory;
+
+typedef struct _ReqRespHandler {
+    uint32_t        id;         // request ID
+    RilOnComplete   handler;    // handler function
+} ReqRespHandler;
+
+typedef struct _UnsolHandler {
+    uint32_t            id;         // unsolicited response ID
+    RilOnUnsolicited    handler;    // handler function
+} UnsolHandler;
+
+typedef struct _RilClientPrv {
+    HRilClient      parent;
+    uint8_t         b_connect;  // connected to server?
+    int             sock;       // socket
+    int             pipefd[2];
+    fd_set          sock_rfds;  // for read with select()
+    RecordStream    *p_rs;
+    uint32_t        token_pool; // each bit in token_pool used for token.
+                                // so, pool size is 32.
+    pthread_t       tid_reader; // socket reader thread id
+    ReqHistory      history[TOKEN_POOL_SIZE];       // request history
+    ReqRespHandler  req_handlers[REQ_POOL_SIZE];    // request response handler list
+    UnsolHandler    unsol_handlers[REQ_POOL_SIZE];  // unsolicited response handler list
+    RilOnError      err_cb;         // error callback
+    void            *err_cb_data;   // error callback data
+    uint8_t b_del_handler;
+} RilClientPrv;
+
+
+//---------------------------------------------------------------------------
+// Local static function prototypes
+//---------------------------------------------------------------------------
+static void * RxReaderFunc(void *param);
+static int processRxBuffer(RilClientPrv *prv, void *buffer, size_t buflen);
+static uint32_t AllocateToken(uint32_t *token_pool);
+static void FreeToken(uint32_t *token_pool, uint32_t token);
+static uint8_t IsValidToken(uint32_t *token_pool, uint32_t token);
+static void DeallocateToken(uint32_t *token_pool, uint32_t token);
+static int blockingWrite(int fd, const void *buffer, size_t len);
+static int RecordReqHistory(RilClientPrv *prv, int token, uint32_t id);
+static void ClearReqHistory(RilClientPrv *prv, int token);
+static RilOnComplete FindReqHandler(RilClientPrv *prv, int token, uint32_t *id);
+static RilOnUnsolicited FindUnsolHandler(RilClientPrv *prv, uint32_t id);
+static int SendOemRequestHookRaw(HRilClient client, int req_id, char *data, size_t len);
+static bool isValidSoundType(SoundType type);
+static bool isValidAudioPath(AudioPath path);
+static bool isValidSoundClockCondition(SoundClockCondition condition);
+static bool isValidCallRecCondition(CallRecCondition condition);
+static bool isValidMuteCondition(MuteCondition condition);
+static bool isValidTwoMicCtrl(TwoMicSolDevice device, TwoMicSolReport report);
+static char ConvertSoundType(SoundType type);
+static char ConvertAudioPath(AudioPath path);
+
+
+/**
+ * @fn  int RegisterUnsolicitedHandler(HRilClient client, uint32_t id, RilOnUnsolicited handler)
+ *
+ * @params  client: Client handle.
+ *          id: Unsolicited response ID to which handler is registered.
+ *          handler: Unsolicited handler. NULL for deregistration.
+ *
+ * @return  0 on success or error code.
+ */
+extern "C"
+int RegisterUnsolicitedHandler(HRilClient client, uint32_t id, RilOnUnsolicited handler) {
+    RilClientPrv *client_prv;
+    int match_slot = -1;
+    int first_empty_slot = -1;
+    int i;
+
+    if (client == NULL || client->prv == NULL)
+        return RIL_CLIENT_ERR_INVAL;
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    for (i = 0; i < REQ_POOL_SIZE; i++) {
+        // Check if  there is matched handler.
+        if (id == client_prv->unsol_handlers[i].id) {
+            match_slot = i;
+        }
+        // Find first empty handler slot.
+        if (first_empty_slot == -1 && client_prv->unsol_handlers[i].id == 0) {
+            first_empty_slot = i;
+        }
+    }
+
+    if (handler == NULL) {  // Unregister.
+        if (match_slot >= 0) {
+            memset(&(client_prv->unsol_handlers[match_slot]), 0, sizeof(UnsolHandler));
+            return RIL_CLIENT_ERR_SUCCESS;
+        }
+        else {
+            return RIL_CLIENT_ERR_SUCCESS;
+        }
+    }
+    else {// Register.
+        if (match_slot >= 0) {
+            client_prv->unsol_handlers[match_slot].handler = handler;   // Just update.
+        }
+        else if (first_empty_slot >= 0) {
+            client_prv->unsol_handlers[first_empty_slot].id = id;
+            client_prv->unsol_handlers[first_empty_slot].handler = handler;
+        }
+        else {
+            return RIL_CLIENT_ERR_RESOURCE;
+        }
+    }
+
+    return RIL_CLIENT_ERR_SUCCESS;
+}
+
+
+/**
+ * @fn  int RegisterRequestCompleteHandler(HRilClient client, uint32_t id, RilOnComplete handler)
+ *
+ * @params  client: Client handle.
+ *          id: Request ID to which handler is registered.
+ *          handler: Request complete handler. NULL for deregistration.
+ *
+ * @return  0 on success or error code.
+ */
+extern "C"
+int RegisterRequestCompleteHandler(HRilClient client, uint32_t id, RilOnComplete handler) {
+    RilClientPrv *client_prv;
+    int match_slot = -1;
+    int first_empty_slot = -1;
+    int i;
+
+    if (client == NULL || client->prv == NULL)
+        return RIL_CLIENT_ERR_INVAL;
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    for (i = 0; i < REQ_POOL_SIZE; i++) {
+        // Check if  there is matched handler.
+        if (id == client_prv->req_handlers[i].id) {
+            match_slot = i;
+        }
+        // Find first empty handler slot.
+        if (first_empty_slot == -1 && client_prv->req_handlers[i].id == 0) {
+            first_empty_slot = i;
+        }
+    }
+
+    if (handler == NULL) {  // Unregister.
+        if (match_slot >= 0) {
+            memset(&(client_prv->req_handlers[match_slot]), 0, sizeof(ReqRespHandler));
+            return RIL_CLIENT_ERR_SUCCESS;
+        }
+        else {
+            return RIL_CLIENT_ERR_SUCCESS;
+        }
+    }
+    else {  // Register.
+        if (match_slot >= 0) {
+            client_prv->req_handlers[match_slot].handler = handler; // Just update.
+        }
+        else if (first_empty_slot >= 0) {
+            client_prv->req_handlers[first_empty_slot].id = id;
+            client_prv->req_handlers[first_empty_slot].handler = handler;
+        }
+        else {
+            return RIL_CLIENT_ERR_RESOURCE;
+        }
+    }
+
+    return RIL_CLIENT_ERR_SUCCESS;
+}
+
+
+/**
+ * @fn  int RegisterErrorCallback(HRilClient client, RilOnError cb, void *data)
+ *
+ * @params  client: Client handle.
+ *          cb: Error callback. NULL for unregistration.
+ *          data: Callback data.
+ *
+ * @return  0 for success or error code.
+ */
+extern "C"
+int RegisterErrorCallback(HRilClient client, RilOnError cb, void *data) {
+    RilClientPrv *client_prv;
+
+    if (client == NULL || client->prv == NULL)
+        return RIL_CLIENT_ERR_INVAL;
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    client_prv->err_cb = cb;
+    client_prv->err_cb_data = data;
+
+    return RIL_CLIENT_ERR_SUCCESS;
+}
+
+
+/**
+ * @fn  HRilClient OpenClient_RILD(void)
+ *
+ * @params  None.
+ *
+ * @return  Client handle, NULL on error.
+ */
+extern "C"
+HRilClient OpenClient_RILD(void) {
+    HRilClient client = (HRilClient)malloc(sizeof(struct RilClient));
+    if (client == NULL)
+        return NULL;
+
+    client->prv = (RilClientPrv *)malloc(sizeof(RilClientPrv));
+    if (client->prv == NULL) {
+        free(client);
+        return NULL;
+    }
+
+    memset(client->prv, 0, sizeof(RilClientPrv));
+
+    ((RilClientPrv *)(client->prv))->parent = client;
+    ((RilClientPrv *)(client->prv))->sock = -1;
+
+    return client;
+}
+
+
+/**
+ * @fn  int Connect_RILD(void)
+ *
+ * @params  client: Client handle.
+ *
+ * @return  0, or error code.
+ */
+extern "C"
+int Connect_RILD(HRilClient client) {
+    RilClientPrv *client_prv;
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: Invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    // Open client socket and connect to server.
+    //client_prv->sock = socket_loopback_client(RILD_PORT, SOCK_STREAM);
+    client_prv->sock = socket_local_client(MULTI_CLIENT_SOCKET_NAME, ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM );
+
+    if (client_prv->sock < 0) {
+        ALOGE("%s: Connecting failed. %s(%d)", __FUNCTION__, strerror(errno), errno);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    client_prv->b_connect = 1;
+
+    if (fcntl(client_prv->sock, F_SETFL, O_NONBLOCK) < 0) {
+        close(client_prv->sock);
+        return RIL_CLIENT_ERR_IO;
+    }
+
+    client_prv->p_rs = record_stream_new(client_prv->sock, MAX_COMMAND_BYTES);
+
+    if (pipe(client_prv->pipefd) < 0) {
+        close(client_prv->sock);
+        ALOGE("%s: Creating command pipe failed. %s(%d)", __FUNCTION__, strerror(errno), errno);
+        return RIL_CLIENT_ERR_IO;
+    }
+
+    if (fcntl(client_prv->pipefd[0], F_SETFL, O_NONBLOCK) < 0) {
+        close(client_prv->sock);
+        close(client_prv->pipefd[0]);
+        close(client_prv->pipefd[1]);
+        return RIL_CLIENT_ERR_IO;
+    }
+
+    // Start socket read thread.
+    if (pthread_create(&(client_prv->tid_reader), NULL, RxReaderFunc, (void *)client_prv) != 0) {
+        close(client_prv->sock);
+        close(client_prv->pipefd[0]);
+        close(client_prv->pipefd[1]);
+
+        memset(client_prv, 0, sizeof(RilClientPrv));
+        client_prv->sock = -1;
+        ALOGE("%s: Can't create Reader thread. %s(%d)", __FUNCTION__, strerror(errno), errno);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    return RIL_CLIENT_ERR_SUCCESS;
+}
+
+/**
+ * @fn  int Connect_QRILD(void)
+ *
+ * @params  client: Client handle.
+ *
+ * @return  0, or error code.
+ */
+extern "C"
+int Connect_QRILD(HRilClient client) {
+    RilClientPrv *client_prv;
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: Invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    // Open client socket and connect to server.
+    //client_prv->sock = socket_loopback_client(RILD_PORT, SOCK_STREAM);
+    client_prv->sock = socket_local_client(MULTI_CLIENT_Q_SOCKET_NAME, ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM );
+
+    if (client_prv->sock < 0) {
+        ALOGE("%s: Connecting failed. %s(%d)", __FUNCTION__, strerror(errno), errno);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    client_prv->b_connect = 1;
+
+    if (fcntl(client_prv->sock, F_SETFL, O_NONBLOCK) < 0) {
+        close(client_prv->sock);
+        return RIL_CLIENT_ERR_IO;
+    }
+
+    client_prv->p_rs = record_stream_new(client_prv->sock, MAX_COMMAND_BYTES);
+
+    if (pipe(client_prv->pipefd) < 0) {
+        close(client_prv->sock);
+        ALOGE("%s: Creating command pipe failed. %s(%d)", __FUNCTION__, strerror(errno), errno);
+        return RIL_CLIENT_ERR_IO;
+    }
+
+    if (fcntl(client_prv->pipefd[0], F_SETFL, O_NONBLOCK) < 0) {
+        close(client_prv->sock);
+        close(client_prv->pipefd[0]);
+        close(client_prv->pipefd[1]);
+        return RIL_CLIENT_ERR_IO;
+    }
+
+    // Start socket read thread.
+    if (pthread_create(&(client_prv->tid_reader), NULL, RxReaderFunc, (void *)client_prv) != 0) {
+        close(client_prv->sock);
+        close(client_prv->pipefd[0]);
+        close(client_prv->pipefd[1]);
+
+        memset(client_prv, 0, sizeof(RilClientPrv));
+        client_prv->sock = -1;
+        ALOGE("%s: Can't create Reader thread. %s(%d)", __FUNCTION__, strerror(errno), errno);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    return RIL_CLIENT_ERR_SUCCESS;
+}
+
+#if defined(SEC_PRODUCT_FEATURE_RIL_CALL_DUALMODE_CDMAGSM)    // mook_120209 Enable multiclient
+/**
+ * @fn    int Connect_RILD_Second(void)
+ *
+ * @params    client: Client handle.
+ *
+ * @return    0, or error code.
+ */
+extern "C"
+int Connect_RILD_Second(HRilClient client)    {
+    RilClientPrv *client_prv;
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: Invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    // Open client socket and connect to server.
+    //client_prv->sock = socket_loopback_client(RILD_PORT, SOCK_STREAM);
+    client_prv->sock = socket_local_client(MULTI_CLIENT_SOCKET_NAME_2, ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM );
+
+    if (client_prv->sock < 0) {
+        ALOGE("%s: Connecting failed. %s(%d)", __FUNCTION__, strerror(errno), errno);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    client_prv->b_connect = 1;
+
+    if (fcntl(client_prv->sock, F_SETFL, O_NONBLOCK) < 0) {
+        close(client_prv->sock);
+        return RIL_CLIENT_ERR_IO;
+    }
+
+    client_prv->p_rs = record_stream_new(client_prv->sock, MAX_COMMAND_BYTES);
+
+    if (pipe(client_prv->pipefd) < 0) {
+        close(client_prv->sock);
+        ALOGE("%s: Creating command pipe failed. %s(%d)", __FUNCTION__, strerror(errno), errno);
+        return RIL_CLIENT_ERR_IO;
+    }
+
+    if (fcntl(client_prv->pipefd[0], F_SETFL, O_NONBLOCK) < 0) {
+        close(client_prv->sock);
+        close(client_prv->pipefd[0]);
+        close(client_prv->pipefd[1]);
+        return RIL_CLIENT_ERR_IO;
+    }
+
+    // Start socket read thread.
+    if (pthread_create(&(client_prv->tid_reader), NULL, RxReaderFunc, (void *)client_prv) != 0) {
+        close(client_prv->sock);
+        close(client_prv->pipefd[0]);
+        close(client_prv->pipefd[1]);
+
+        memset(client_prv, 0, sizeof(RilClientPrv));
+        client_prv->sock = -1;
+        ALOGE("%s: Can't create Reader thread. %s(%d)", __FUNCTION__, strerror(errno), errno);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    return RIL_CLIENT_ERR_SUCCESS;
+}
+#endif
+
+/**
+ * @fn  int isConnected_RILD(HRilClient client)
+ *
+ * @params  client: Client handle.
+ *
+ * @return  0, or 1.
+ */
+extern "C"
+int isConnected_RILD(HRilClient client) {
+    RilClientPrv *client_prv;
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    return client_prv->b_connect == 1;
+}
+
+/**
+ * @fn  int Disconnect_RILD(HRilClient client)
+ *
+ * @params  client: Client handle.
+ *
+ * @return  0 on success, or error code.
+ */
+extern "C"
+int Disconnect_RILD(HRilClient client) {
+    RilClientPrv *client_prv;
+    int ret = 0;
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    if (client_prv->sock == -1)
+        return RIL_CLIENT_ERR_SUCCESS;
+
+    printf("[*] %s(): sock=%d\n", __FUNCTION__, client_prv->sock);
+
+    if (client_prv->sock > 0) {
+        do {
+            ret = write(client_prv->pipefd[1], "close", strlen("close"));
+        } while (ret < 0 && errno == EINTR);
+    }
+
+    client_prv->b_connect = 0;
+
+    pthread_join(client_prv->tid_reader, NULL);
+
+    return RIL_CLIENT_ERR_SUCCESS;
+}
+
+
+/**
+ * @fn  int CloseClient_RILD(HRilClient client)
+ *
+ * @params  client: Client handle.
+ *
+ * @return  0 on success, or error code.
+ */
+extern "C"
+int CloseClient_RILD(HRilClient client) {
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    Disconnect_RILD(client);
+
+    free(client->prv);
+    free(client);
+
+    return RIL_CLIENT_ERR_SUCCESS;
+}
+
+
+/**
+ * Set in-call volume.
+ */
+extern "C"
+int SetCallVolume(HRilClient client, SoundType type, int vol_level) {
+    RilClientPrv *client_prv;
+    int ret;
+    char data[6] = {0,};
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: Invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    if (client_prv->sock < 0 ) {
+        ALOGE("%s: Not connected.", __FUNCTION__);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    if (isValidSoundType(type) == false) {
+        ALOGE("%s: Invalid sound type", __FUNCTION__);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    // Make raw data
+    data[0] = OEM_FUNC_SOUND;
+    data[1] = OEM_SND_SET_VOLUME_CTRL;
+    data[2] = 0x00;         // data length
+    data[3] = 0x06;         // data length
+    data[4] = ConvertSoundType(type);   // volume type
+    data[5] = vol_level;    // volume level
+
+    RegisterRequestCompleteHandler(client, REQ_SET_CALL_VOLUME, NULL);
+
+    ret = SendOemRequestHookRaw(client, REQ_SET_CALL_VOLUME, data, sizeof(data));
+    if (ret != RIL_CLIENT_ERR_SUCCESS) {
+        RegisterRequestCompleteHandler(client, REQ_SET_CALL_VOLUME, NULL);
+    }
+
+    return ret;
+}
+
+
+/**
+ * Set external sound device path for noise reduction.
+ */
+extern "C"
+int SetCallAudioPath(HRilClient client, AudioPath path, ExtraVolume mode) {
+    RilClientPrv *client_prv;
+    int ret;
+    char data[6] = {0,};
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: Invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    if (client_prv->sock < 0 ) {
+        ALOGE("%s: Not connected.", __FUNCTION__);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    if (isValidAudioPath(path) == false) {
+        ALOGE("%s: Invalid audio path", __FUNCTION__);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    // Make raw data
+    data[0] = OEM_FUNC_SOUND;
+    data[1] = OEM_SND_SET_AUDIO_PATH;
+    data[2] = 0x00;     // data length
+    data[3] = 0x06;     // data length
+    data[4] = ConvertAudioPath(path); // audio path
+    data[5] = mode; // ExtraVolume
+
+    RegisterRequestCompleteHandler(client, REQ_SET_AUDIO_PATH, NULL);
+
+    ret = SendOemRequestHookRaw(client, REQ_SET_AUDIO_PATH, data, sizeof(data));
+    if (ret != RIL_CLIENT_ERR_SUCCESS) {
+        RegisterRequestCompleteHandler(client, REQ_SET_AUDIO_PATH, NULL);
+    }
+
+    return ret;
+}
+
+
+/**
+ * Set modem clock to master or slave.
+ */
+extern "C"
+int SetCallClockSync(HRilClient client, SoundClockCondition condition) {
+    RilClientPrv *client_prv;
+    int ret;
+    char data[5] = {0,};
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: Invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    if (client_prv->sock < 0 ) {
+        ALOGE("%s: Not connected.", __FUNCTION__);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    if (isValidSoundClockCondition(condition) == false) {
+        ALOGE("%s: Invalid sound clock condition", __FUNCTION__);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    // Make raw data
+    data[0] = OEM_FUNC_SOUND;
+    data[1] = OEM_SND_SET_CLOCK_CTRL;
+    data[2] = 0x00; // data length
+    data[3] = 0x05; // data length
+    data[4] = condition;
+
+    RegisterRequestCompleteHandler(client, REQ_SET_CALL_CLOCK_SYNC, NULL);
+
+    ret = SendOemRequestHookRaw(client, REQ_SET_CALL_CLOCK_SYNC, data, sizeof(data));
+    if (ret != RIL_CLIENT_ERR_SUCCESS) {
+        RegisterRequestCompleteHandler(client, REQ_SET_CALL_CLOCK_SYNC, NULL);
+    }
+
+    return ret;
+}
+
+/**
+ * Set modem VTCall clock to master or slave.
+ */
+extern "C"
+int SetVideoCallClockSync(HRilClient client, SoundClockCondition condition) {
+    RilClientPrv *client_prv;
+    int ret;
+    char data[5] = {0,};
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: Invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    if (client_prv->sock < 0 ) {
+        ALOGE("%s: Not connected.", __FUNCTION__);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    if (isValidSoundClockCondition(condition) == false) {
+        ALOGE("%s: Invalid sound clock condition", __FUNCTION__);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    // Make raw data
+    data[0] = OEM_FUNC_SOUND;
+    data[1] = OEM_SND_SET_VIDEO_CALL_CTRL;
+    data[2] = 0x00; // data length
+    data[3] = 0x05; // data length
+    data[4] = condition;
+
+    RegisterRequestCompleteHandler(client, REQ_SET_CALL_VT_CTRL, NULL);
+
+    ret = SendOemRequestHookRaw(client, REQ_SET_CALL_VT_CTRL, data, sizeof(data));
+    if (ret != RIL_CLIENT_ERR_SUCCESS) {
+        RegisterRequestCompleteHandler(client, REQ_SET_CALL_VT_CTRL, NULL);
+    }
+
+    return ret;
+}
+
+/**
+ * Set voice recording.
+ */
+extern "C"
+int SetCallRecord(HRilClient client, CallRecCondition condition) {
+    RilClientPrv *client_prv;
+    int ret;
+    char data[5] = {0,};
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: Invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    if (client_prv->sock < 0 ) {
+        ALOGE("%s: Not connected.", __FUNCTION__);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    if (isValidCallRecCondition(condition) == false) {
+        ALOGE("%s: Invalid sound clock condition", __FUNCTION__);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    // Make raw data
+    data[0] = OEM_FUNC_SOUND;
+    data[1] = OEM_SND_SET_VOICE_RECORDING_CTRL;
+    data[2] = 0x00; // data length
+    data[3] = 0x05; // data length
+    data[4] = condition;
+
+    RegisterRequestCompleteHandler(client, REQ_SET_CALL_RECORDING, NULL);
+
+    ret = SendOemRequestHookRaw(client, REQ_SET_CALL_RECORDING, data, sizeof(data));
+    if (ret != RIL_CLIENT_ERR_SUCCESS) {
+        RegisterRequestCompleteHandler(client, REQ_SET_CALL_RECORDING, NULL);
+    }
+
+    return ret;
+}
+
+/**
+ * Set mute or unmute.
+ */
+extern "C"
+int SetMute(HRilClient client, MuteCondition condition) {
+    RilClientPrv *client_prv;
+    int ret;
+    char data[5] = {0,};
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: Invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    if (client_prv->sock < 0 ) {
+        ALOGE("%s: Not connected.", __FUNCTION__);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    if (isValidMuteCondition(condition) == false) {
+        ALOGE("%s: Invalid sound clock condition", __FUNCTION__);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    // Make raw data
+    data[0] = OEM_FUNC_SOUND;
+    data[1] = OEM_SND_SET_MUTE;
+    data[2] = 0x00; // data length
+    data[3] = 0x05; // data length
+    data[4] = condition;
+
+    RegisterRequestCompleteHandler(client, REQ_SET_CALL_MUTE, NULL);
+
+    ret = SendOemRequestHookRaw(client, REQ_SET_CALL_MUTE, data, sizeof(data));
+    if (ret != RIL_CLIENT_ERR_SUCCESS) {
+        RegisterRequestCompleteHandler(client, REQ_SET_CALL_MUTE, NULL);
+    }
+
+    return ret;
+}
+
+/**
+ * Get mute state.
+ */
+extern "C"
+int GetMute(HRilClient client, RilOnComplete handler) {
+    RilClientPrv *client_prv;
+    int ret;
+    char data[4] = {0,};
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: Invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    if (client_prv->sock < 0 ) {
+        ALOGE("%s: Not connected.", __FUNCTION__);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    client_prv->b_del_handler = 1;
+
+    // Make raw data
+    data[0] = OEM_FUNC_SOUND;
+    data[1] = OEM_SND_GET_MUTE;
+    data[2] = 0x00; // data length
+    data[3] = 0x04; // data length
+
+    RegisterRequestCompleteHandler(client, REQ_GET_CALL_MUTE, handler);
+
+    ret = SendOemRequestHookRaw(client, REQ_GET_CALL_MUTE, data, sizeof(data));
+    if (ret != RIL_CLIENT_ERR_SUCCESS) {
+        RegisterRequestCompleteHandler(client, REQ_GET_CALL_MUTE, NULL);
+    }
+
+    return ret;
+}
+
+extern "C"
+int SetTwoMicControl(HRilClient client, TwoMicSolDevice device, TwoMicSolReport report) {
+    RilClientPrv *client_prv;
+    int ret;
+    char data[6] = {0,};
+
+    ALOGE(" + %s", __FUNCTION__);
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: Invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    if (client_prv->sock < 0 ) {
+        ALOGE("%s: Not connected.", __FUNCTION__);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    if (isValidTwoMicCtrl(device, report) == false) {
+        ALOGE("%s: Invalid sound set two params", __FUNCTION__);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    // Make raw data
+    data[0] = OEM_FUNC_SOUND;
+    data[1] = OEM_SND_SET_TWO_MIC_CTL;
+    data[2] = 0x00; // data length
+    data[3] = 0x06; // data length
+    data[4] = device;
+    data[5] = report;
+
+    RegisterRequestCompleteHandler(client, REQ_SET_TWO_MIC_CTRL, NULL);
+
+    ret = SendOemRequestHookRaw(client, REQ_SET_TWO_MIC_CTRL, data, sizeof(data));
+    if (ret != RIL_CLIENT_ERR_SUCCESS) {
+        RegisterRequestCompleteHandler(client, REQ_SET_TWO_MIC_CTRL, NULL);
+    }
+
+    ALOGE(" - %s", __FUNCTION__);
+
+    return ret;
+}
+
+extern "C"
+int SetDhaSolution(HRilClient client, DhaSolMode mode, DhaSolSelect select, char *parameter) {
+    RilClientPrv *client_prv;
+    int ret;
+    char data[30] = {0,};
+    char tempPara[24]={0,};
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: Invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    if (client_prv->sock < 0 ) {
+        ALOGE("%s: Not connected.", __FUNCTION__);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    ALOGE("%s: DHA mode=%d, select=%d", __FUNCTION__,mode, select);
+
+    // Make raw data
+    data[0] = OEM_FUNC_SOUND;
+    data[1] = OEM_SND_SET_DHA_CTL;
+    data[2] = 0x00; // data length
+    data[3] = 0x1E; // data length
+    data[4] = mode;
+    data[5] = select;
+
+    memcpy(tempPara, parameter, 24);
+    for(int i=0; i<24; i++)
+         data[6+i]= tempPara[i];
+
+    RegisterRequestCompleteHandler(client, REQ_SET_DHA_CTRL, NULL);
+
+    ret = SendOemRequestHookRaw(client, REQ_SET_DHA_CTRL, data, sizeof(data));
+    if (ret != RIL_CLIENT_ERR_SUCCESS) {
+        RegisterRequestCompleteHandler(client, REQ_SET_DHA_CTRL, NULL);
+    }
+
+    return ret;
+}
+
+/**
+ * Set LoopbackTest mode, path.
+ */
+extern "C"
+int SetLoopbackTest(HRilClient client, LoopbackMode mode, AudioPath path) {
+    RilClientPrv *client_prv;
+    int ret;
+    char data[6] = {0,};
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: Invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    if (client_prv->sock < 0 ) {
+        ALOGE("%s: Not connected.", __FUNCTION__);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    // Make raw data
+    data[0] = OEM_FUNC_SOUND;
+    data[1] = OEM_SND_SET_LOOPBACK_CTRL;
+    data[2] = 0x00;     // data length
+    data[3] = 0x06;     // data length
+    data[4] = mode; // Loopback Mode
+    data[5] = ConvertAudioPath(path); // Loopback path
+
+    RegisterRequestCompleteHandler(client, REQ_SET_LOOPBACK, NULL);
+
+    ret = SendOemRequestHookRaw(client, REQ_SET_LOOPBACK, data, sizeof(data));
+    if (ret != RIL_CLIENT_ERR_SUCCESS) {
+        RegisterRequestCompleteHandler(client, REQ_SET_LOOPBACK, NULL);
+    }
+
+    return ret;
+}
+
+
+/**
+ * @fn  int InvokeOemRequestHookRaw(HRilClient client, char *data, size_t len)
+ *
+ * @params  client: Client handle.
+ *          data: Request data.
+ *          len: Request data length.
+ *
+ * @return  0 for success or error code. On receiving RIL_CLIENT_ERR_AGAIN,
+ *          caller should retry.
+ */
+extern "C"
+int InvokeOemRequestHookRaw(HRilClient client, char *data, size_t len) {
+    RilClientPrv *client_prv;
+
+    if (client == NULL || client->prv == NULL) {
+        ALOGE("%s: Invalid client %p", __FUNCTION__, client);
+        return RIL_CLIENT_ERR_INVAL;
+    }
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    if (client_prv->sock < 0 ) {
+        ALOGE("%s: Not connected.", __FUNCTION__);
+        return RIL_CLIENT_ERR_CONNECT;
+    }
+
+    return SendOemRequestHookRaw(client, REQ_OEM_HOOK_RAW, data, len);
+}
+
+
+static int SendOemRequestHookRaw(HRilClient client, int req_id, char *data, size_t len) {
+    int token = 0;
+    int ret = 0;
+    uint32_t header = 0;
+    android::Parcel p;
+    RilClientPrv *client_prv;
+    int maxfd = -1;
+
+    client_prv = (RilClientPrv *)(client->prv);
+
+    // Allocate a token.
+    token = AllocateToken(&(client_prv->token_pool));
+    if (token == 0) {
+        ALOGE("%s: No token.", __FUNCTION__);
+        return RIL_CLIENT_ERR_AGAIN;
+    }
+
+    // Record token for the request sent.
+    if (RecordReqHistory(client_prv, token, req_id) != RIL_CLIENT_ERR_SUCCESS) {
+        goto error;
+    }
+
+    // Make OEM request data.
+    p.writeInt32(RIL_REQUEST_OEM_HOOK_RAW);
+    p.writeInt32(token);
+    p.writeInt32(len);
+    p.write((void *)data, len);
+
+    // DO TX: header(size).
+    header = htonl(p.dataSize());
+
+    if (DBG) ALOGD("%s(): token = %d\n", __FUNCTION__, token);
+
+    ret = blockingWrite(client_prv->sock, (void *)&header, sizeof(header));
+    if (ret < 0) {
+        ALOGE("%s: send request header failed. (%d)", __FUNCTION__, ret);
+        goto error;
+    }
+
+    // Do TX: response data.
+    ret = blockingWrite(client_prv->sock, p.data(), p.dataSize());
+    if (ret < 0) {
+        ALOGE("%s: send request data failed. (%d)", __FUNCTION__, ret);
+        goto error;
+    }
+
+    return RIL_CLIENT_ERR_SUCCESS;
+
+error:
+    FreeToken(&(client_prv->token_pool), token);
+    ClearReqHistory(client_prv, token);
+
+    return RIL_CLIENT_ERR_UNKNOWN;
+}
+
+
+static bool isValidSoundType(SoundType type) {
+    return (type >= SOUND_TYPE_VOICE && type <= SOUND_TYPE_BTVOICE);
+}
+
+
+static bool isValidAudioPath(AudioPath path) {
+    return (path >= SOUND_AUDIO_PATH_HANDSET && path <= OEM_SND_AUDIO_PATH_BT_WB_NSEC_OFF);
+}
+
+
+static bool isValidSoundClockCondition(SoundClockCondition condition) {
+    return (condition >= SOUND_CLOCK_STOP && condition <= SOUND_CLOCK_START);
+}
+
+static bool isValidCallRecCondition(CallRecCondition condition) {
+    return (condition >= CALL_REC_STOP && condition <= CALL_REC_START);
+}
+
+static bool isValidMuteCondition(MuteCondition condition) {
+    return (condition >= TX_UNMUTE && condition <= RXTX_MUTE);
+}
+
+static bool isValidTwoMicCtrl(TwoMicSolDevice device, TwoMicSolReport report) {
+    return (device >= AUDIENCE && device <= FORTEMEDIA && report >= TWO_MIC_SOLUTION_OFF && report <= TWO_MIC_SOLUTION_ON  );
+}
+
+
+static char ConvertSoundType(SoundType type) {
+    switch (type) {
+        case SOUND_TYPE_VOICE:
+            return OEM_SND_TYPE_VOICE;
+        case SOUND_TYPE_SPEAKER:
+            return OEM_SND_TYPE_SPEAKER;
+        case SOUND_TYPE_HEADSET:
+            return OEM_SND_TYPE_HEADSET;
+        case SOUND_TYPE_BTVOICE:
+            return OEM_SND_TYPE_BTVOICE;
+        default:
+            return OEM_SND_TYPE_VOICE;
+    }
+}
+
+
+static char ConvertAudioPath(AudioPath path) {
+    switch (path) {
+        case SOUND_AUDIO_PATH_HANDSET:
+            return OEM_SND_AUDIO_PATH_HANDSET;
+        case SOUND_AUDIO_PATH_HEADSET:
+            return OEM_SND_AUDIO_PATH_HEADSET;
+        case SOUND_AUDIO_PATH_SPEAKER:
+            return OEM_SND_AUDIO_PATH_SPEAKER;
+        case SOUND_AUDIO_PATH_BLUETOOTH:
+            return OEM_SND_AUDIO_PATH_BLUETOOTH;
+        case SOUND_AUDIO_PATH_STEREO_BT:
+            return OEM_SND_AUDIO_PATH_STEREO_BLUETOOTH;
+        case SOUND_AUDIO_PATH_HEADPHONE:
+            return OEM_SND_AUDIO_PATH_HEADPHONE;
+        case SOUND_AUDIO_PATH_BLUETOOTH_NO_NR:
+            return OEM_SND_AUDIO_PATH_BT_NSEC_OFF;
+        case SOUND_AUDIO_PATH_MIC1:
+            return OEM_SND_AUDIO_PATH_MIC1;
+        case SOUND_AUDIO_PATH_MIC2:
+            return OEM_SND_AUDIO_PATH_MIC2;
+        case SOUND_AUDIO_PATH_BLUETOOTH_WB:
+            return OEM_SND_AUDIO_PATH_BT_WB;
+        case SOUND_AUDIO_PATH_BLUETOOTH_WB_NO_NR:
+            return OEM_SND_AUDIO_PATH_BT_WB_NSEC_OFF;
+
+        default:
+            return OEM_SND_AUDIO_PATH_HANDSET;
+    }
+}
+
+
+static void * RxReaderFunc(void *param) {
+    RilClientPrv *client_prv = (RilClientPrv *)param;
+    int maxfd = 0;
+    int token = 0;
+    void *p_record = NULL;
+    size_t recordlen = 0;
+    int ret = 0;
+    int n;
+
+    if (client_prv == NULL)
+        return NULL;
+
+    maxfd = max(client_prv->sock, client_prv->pipefd[0]) + 1;
+
+    printf("[*] %s() b_connect=%d, maxfd=%d\n", __FUNCTION__, client_prv->b_connect, maxfd);
+    while (client_prv->b_connect) {
+        FD_ZERO(&(client_prv->sock_rfds));
+
+        FD_SET(client_prv->sock, &(client_prv->sock_rfds));
+        FD_SET(client_prv->pipefd[0], &(client_prv->sock_rfds));
+
+        if (DBG) ALOGD("[*] %s() b_connect=%d\n", __FUNCTION__, client_prv->b_connect);
+        if (select(maxfd, &(client_prv->sock_rfds), NULL, NULL, NULL) > 0) {
+            if (FD_ISSET(client_prv->sock, &(client_prv->sock_rfds))) {
+                // Read incoming data
+                for (;;) {
+                    // loop until EAGAIN/EINTR, end of stream, or other error
+                    ret = record_stream_get_next(client_prv->p_rs, &p_record, &recordlen);
+                    if (ret == 0 && p_record == NULL) { // end-of-stream
+                        break;
+                    }
+                    else if (ret < 0) {
+                        break;
+                    }
+                    else if (ret == 0) {    // && p_record != NULL
+                        n = processRxBuffer(client_prv, p_record, recordlen);
+                        if (n != RIL_CLIENT_ERR_SUCCESS) {
+                            ALOGE("%s: processRXBuffer returns %d", __FUNCTION__, n);
+                        }
+                    }
+                    else {
+                        printf("[*] %s()\n", __FUNCTION__);
+                    }
+                }
+
+                if (ret == 0 || !(errno == EAGAIN || errno == EINTR)) {
+                    // fatal error or end-of-stream
+                    if (client_prv->sock > 0) {
+                        close(client_prv->sock);
+                        client_prv->sock = -1;
+                        client_prv->b_connect = 0;
+                    }
+
+                    if (client_prv->p_rs)
+                        record_stream_free(client_prv->p_rs);
+
+                    // EOS
+                    if (client_prv->err_cb) {
+                        client_prv->err_cb(client_prv->err_cb_data, RIL_CLIENT_ERR_CONNECT);
+                        return NULL;
+                    }
+
+                    break;
+                }
+            }
+            if (FD_ISSET(client_prv->pipefd[0], &(client_prv->sock_rfds))) {
+                char end_cmd[10];
+
+                if (DBG) ALOGD("%s(): close\n", __FUNCTION__);
+
+                if (read(client_prv->pipefd[0], end_cmd, sizeof(end_cmd)) > 0) {
+                    close(client_prv->sock);
+                    close(client_prv->pipefd[0]);
+                    close(client_prv->pipefd[1]);
+
+                    client_prv->sock = -1;
+                    client_prv->b_connect = 0;
+                }
+            }
+        }
+    }
+
+    return NULL;
+}
+
+
+static int processUnsolicited(RilClientPrv *prv, Parcel &p) {
+    int32_t resp_id, len;
+    status_t status;
+    const void *data = NULL;
+    RilOnUnsolicited unsol_func = NULL;
+
+    status = p.readInt32(&resp_id);
+    if (status != NO_ERROR) {
+        ALOGE("%s: read resp_id failed.", __FUNCTION__);
+        return RIL_CLIENT_ERR_IO;
+    }
+
+    status = p.readInt32(&len);
+    if (status != NO_ERROR) {
+        //ALOGE("%s: read length failed. assume zero length.", __FUNCTION__);
+        len = 0;
+    }
+
+    ALOGD("%s(): resp_id (%d), len(%d)\n", __FUNCTION__, resp_id, len);
+
+    if (len)
+        data = p.readInplace(len);
+
+    // Find unsolicited response handler.
+    unsol_func = FindUnsolHandler(prv, (uint32_t)resp_id);
+    if (unsol_func) {
+        unsol_func(prv->parent, data, len);
+    }
+
+    return RIL_CLIENT_ERR_SUCCESS;
+}
+
+
+static int processSolicited(RilClientPrv *prv, Parcel &p) {
+    int32_t token, err, len;
+    status_t status;
+    const void *data = NULL;
+    RilOnComplete req_func = NULL;
+    int ret = RIL_CLIENT_ERR_SUCCESS;
+    uint32_t req_id = 0;
+
+    if (DBG) ALOGD("%s()", __FUNCTION__);
+
+    status = p.readInt32(&token);
+    if (status != NO_ERROR) {
+        ALOGE("%s: Read token fail. Status %d\n", __FUNCTION__, status);
+        return RIL_CLIENT_ERR_IO;
+    }
+
+    if (IsValidToken(&(prv->token_pool), token) == 0) {
+        ALOGE("%s: Invalid Token", __FUNCTION__);
+        return RIL_CLIENT_ERR_INVAL;    // Invalid token.
+    }
+
+    status = p.readInt32(&err);
+    if (status != NO_ERROR) {
+        ALOGE("%s: Read err fail. Status %d\n", __FUNCTION__, status);
+        ret = RIL_CLIENT_ERR_IO;
+        goto error;
+    }
+
+    // Don't go further for error response.
+    if (err != RIL_CLIENT_ERR_SUCCESS) {
+        ALOGE("%s: Error %d\n", __FUNCTION__, err);
+        if (prv->err_cb)
+            prv->err_cb(prv->err_cb_data, err);
+        ret = RIL_CLIENT_ERR_SUCCESS;
+        goto error;
+    }
+
+    status = p.readInt32(&len);
+    if (status != NO_ERROR) {
+        /* no length field */
+        len = 0;
+    }
+
+    if (len)
+        data = p.readInplace(len);
+
+    // Find request handler for the token.
+    // First, FindReqHandler() searches request history with the token
+    // and finds out a request ID. Then, it search request handler table
+    // with the request ID.
+    req_func = FindReqHandler(prv, token, &req_id);
+    if (req_func)
+    {
+        if (DBG) ALOGD("[*] Call handler");
+        req_func(prv->parent, data, len);
+
+        if(prv->b_del_handler) {
+         prv->b_del_handler = 0;
+            RegisterRequestCompleteHandler(prv->parent, req_id, NULL);
+        }
+    } else {
+        if (DBG) ALOGD("%s: No handler for token %d\n", __FUNCTION__, token);
+    }
+
+error:
+    FreeToken(&(prv->token_pool), token);
+    ClearReqHistory(prv, token);
+    return ret;
+}
+
+
+static int processRxBuffer(RilClientPrv *prv, void *buffer, size_t buflen) {
+    Parcel p;
+    int32_t response_type;
+    status_t status;
+    int ret = RIL_CLIENT_ERR_SUCCESS;
+
+    acquire_wake_lock(PARTIAL_WAKE_LOCK, RIL_CLIENT_WAKE_LOCK);
+
+    p.setData((uint8_t *)buffer, buflen);
+
+    status = p.readInt32(&response_type);
+    if (DBG) ALOGD("%s: status %d response_type %d", __FUNCTION__, status, response_type);
+
+    if (status != NO_ERROR) {
+     ret = RIL_CLIENT_ERR_IO;
+        goto EXIT;
+    }
+
+    // FOr unsolicited response.
+    if (response_type == RESPONSE_UNSOLICITED) {
+        ret = processUnsolicited(prv, p);
+    }
+    // For solicited response.
+    else if (response_type == RESPONSE_SOLICITED) {
+        ret = processSolicited(prv, p);
+        if (ret != RIL_CLIENT_ERR_SUCCESS && prv->err_cb) {
+            prv->err_cb(prv->err_cb_data, ret);
+        }
+    }
+    else {
+        ret =  RIL_CLIENT_ERR_INVAL;
+    }
+
+EXIT:
+    release_wake_lock(RIL_CLIENT_WAKE_LOCK);
+    return ret;
+}
+
+
+static uint32_t AllocateToken(uint32_t *token_pool) {
+    int i;
+
+    // Token pool is full.
+    if (*token_pool == 0xFFFFFFFF)
+        return 0;
+
+    for (i = 0; i < 32; i++) {
+        uint32_t new_token = 0x00000001 << i;
+
+        if ((*token_pool & new_token) == 0) {
+            *token_pool |= new_token;
+            return new_token;
+        }
+    }
+
+    return 0;
+}
+
+
+static void FreeToken(uint32_t *token_pool, uint32_t token) {
+    *token_pool &= ~token;
+}
+
+
+static uint8_t IsValidToken(uint32_t *token_pool, uint32_t token) {
+    if (token == 0)
+        return 0;
+
+    if ((*token_pool & token) == token)
+        return 1;
+    else
+        return 0;
+}
+
+
+static int RecordReqHistory(RilClientPrv *prv, int token, uint32_t id) {
+    int i = 0;
+
+    if (DBG) ALOGD("[*] %s(): token(%d), ID(%d)\n", __FUNCTION__, token, id);
+    for (i = 0; i < TOKEN_POOL_SIZE; i++) {
+        if (prv->history[i].token == 0) {
+            prv->history[i].token = token;
+            prv->history[i].id = id;
+
+            if (DBG) ALOGD("[*] %s(): token(%d), ID(%d)\n", __FUNCTION__, token, id);
+
+            return RIL_CLIENT_ERR_SUCCESS;
+        }
+    }
+
+    ALOGE("%s: No free record for token %d", __FUNCTION__, token);
+
+    return RIL_CLIENT_ERR_RESOURCE;
+}
+
+static void ClearReqHistory(RilClientPrv *prv, int token) {
+    int i = 0;
+
+    if (DBG) ALOGD("[*] %s(): token(%d)\n", __FUNCTION__, token);
+    for (i = 0; i < TOKEN_POOL_SIZE; i++) {
+        if (prv->history[i].token == token) {
+            memset(&(prv->history[i]), 0, sizeof(ReqHistory));
+            break;
+        }
+    }
+}
+
+
+static RilOnUnsolicited FindUnsolHandler(RilClientPrv *prv, uint32_t id) {
+    int i;
+
+    // Search unsolicited handler table.
+    for (i = 0; i < REQ_POOL_SIZE; i++) {
+        if (prv->unsol_handlers[i].id == id)
+            return prv->unsol_handlers[i].handler;
+    }
+
+    return (RilOnUnsolicited)NULL;
+}
+
+
+static RilOnComplete FindReqHandler(RilClientPrv *prv, int token, uint32_t *id) {
+    int i = 0;
+    int j = 0;
+
+    if (DBG) ALOGD("[*] %s(): token(%d)\n", __FUNCTION__, token);
+
+    // Search request history.
+    for (i = 0; i < TOKEN_POOL_SIZE; i++) {
+        printf("[*] %s(): history_token(%d)\n", __FUNCTION__, prv->history[i].token);
+        if (prv->history[i].token == token) {
+            // Search request handler with request ID found.
+            for (j = 0; j < REQ_POOL_SIZE; j++) {
+                printf("[*] %s(): token(%d), req_id(%d), history_id(%d)\n", __FUNCTION__, token, prv->history[i].id, prv->history[i].id);
+                if (prv->req_handlers[j].id == prv->history[i].id) {
+              *id = prv->req_handlers[j].id;
+                    return prv->req_handlers[j].handler;
+                }
+            }
+        }
+    }
+
+    return NULL;
+}
+
+
+static void DeallocateToken(uint32_t *token_pool, uint32_t token) {
+    *token_pool &= !token;
+}
+
+
+static int blockingWrite(int fd, const void *buffer, size_t len) {
+    size_t writeOffset = 0;
+    const uint8_t *toWrite;
+    ssize_t written = 0;
+
+    if (buffer == NULL)
+        return -1;
+
+    toWrite = (const uint8_t *)buffer;
+
+    while (writeOffset < len) {
+        do
+        {
+            written = write(fd, toWrite + writeOffset, len - writeOffset);
+        } while (written < 0 && errno == EINTR);
+
+        if (written >= 0) {
+            writeOffset += written;
+        }
+        else {
+            ALOGE ("RIL Response: unexpected error on write errno:%d", errno);
+            printf("RIL Response: unexpected error on write errno:%d\n", errno);
+            close(fd);
+            return -1;
+        }
+    }
+
+    return 0;
+}
+
+} // namespace android
+
+// end of file
+
diff --git a/ril/libsecril-client/secril-client.h b/ril/libsecril-client/secril-client.h
new file mode 100644
index 0000000..fb1729c
--- /dev/null
+++ b/ril/libsecril-client/secril-client.h
@@ -0,0 +1,293 @@
+/**
+ * @file    secril-client.h
+ *
+ * @author  Myeongcheol Kim (mcmount.kim@samsung.com)
+ *
+ * @brief   RIL client library for multi-client support
+ */
+
+#ifndef __SECRIL_CLIENT_H__
+#define __SECRIL_CLIENT_H__
+
+#include <sys/types.h>
+//#include "SecProductFeature_RIL.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct RilClient {
+    void *prv;
+};
+
+typedef struct RilClient * HRilClient;
+
+
+//---------------------------------------------------------------------------
+// Defines
+//---------------------------------------------------------------------------
+#define RIL_CLIENT_ERR_SUCCESS      0
+#define RIL_CLIENT_ERR_AGAIN        1
+#define RIL_CLIENT_ERR_INIT         2   // Client is not initialized
+#define RIL_CLIENT_ERR_INVAL        3   // Invalid value
+#define RIL_CLIENT_ERR_CONNECT      4   // Connection error
+#define RIL_CLIENT_ERR_IO           5   // IO error
+#define RIL_CLIENT_ERR_RESOURCE     6   // Resource not available
+#define RIL_CLIENT_ERR_UNKNOWN      7
+
+
+//---------------------------------------------------------------------------
+// Type definitions
+//---------------------------------------------------------------------------
+
+typedef int (*RilOnComplete)(HRilClient handle, const void *data, size_t datalen);
+
+typedef int (*RilOnUnsolicited)(HRilClient handle, const void *data, size_t datalen);
+
+typedef int (*RilOnError)(void *data, int error);
+
+
+//---------------------------------------------------------------------------
+// Client APIs
+//---------------------------------------------------------------------------
+
+/**
+ * Open RILD multi-client.
+ * Return is client handle, NULL on error.
+ */
+HRilClient OpenClient_RILD(void);
+
+/**
+ * Stop RILD multi-client. If client socket was connected,
+ * it will be disconnected.
+ */
+int CloseClient_RILD(HRilClient client);
+
+/**
+ * Connect to RIL deamon. One client task starts.
+ * Return is 0 or error code.
+ */
+int Connect_RILD(HRilClient client);
+
+/**
+ * Connect to QRIL deamon. One client task starts.
+ * Return is 0 or error code.
+ */
+int Connect_QRILD(HRilClient client);
+
+#if defined(SEC_PRODUCT_FEATURE_RIL_CALL_DUALMODE_CDMAGSM)
+/**
+ * Connect to RIL deamon. One client task starts.
+ * Return is 0 or error code.
+ */
+int Connect_RILD_Second(HRilClient client);
+#endif
+/**
+ * check whether RILD is connected
+ * Returns 0 or 1
+ */
+int isConnected_RILD(HRilClient client);
+
+/**
+ * Disconnect connection to RIL deamon(socket close).
+ * Return is 0 or error code.
+ */
+int Disconnect_RILD(HRilClient client);
+
+/**
+ * Register unsolicited response handler. If handler is NULL,
+ * the handler for the request ID is unregistered.
+ * The response handler is invoked in the client task context.
+ * Return is 0 or error code.
+ */
+int RegisterUnsolicitedHandler(HRilClient client, uint32_t id, RilOnUnsolicited handler);
+
+/**
+ * Register solicited response handler. If handler is NULL,
+ * the handler for the ID is unregistered.
+ * The response handler is invoked in the client task context.
+ * Return is 0 or error code.
+ */
+int RegisterRequestCompleteHandler(HRilClient client, uint32_t id, RilOnComplete handler);
+
+/**
+ * Register error callback. If handler is NULL,
+ * the callback is unregistered.
+ * The response handler is invoked in the client task context.
+ * Return is 0 or error code.
+ */
+int RegisterErrorCallback(HRilClient client, RilOnError cb, void *data);
+
+/**
+ * Invoke OEM request. Request ID is RIL_REQUEST_OEM_HOOK_RAW.
+ * Return is 0 or error code. For RIL_CLIENT_ERR_AGAIN caller should retry.
+ */
+int InvokeOemRequestHookRaw(HRilClient client, char *data, size_t len);
+
+/**
+ * Sound device types.
+ */
+typedef enum _SoundType {
+    SOUND_TYPE_VOICE,
+    SOUND_TYPE_SPEAKER,
+    SOUND_TYPE_HEADSET,
+    SOUND_TYPE_BTVOICE
+} SoundType;
+
+/**
+ * External sound device path.
+ */
+typedef enum _AudioPath {
+    SOUND_AUDIO_PATH_HANDSET,
+    SOUND_AUDIO_PATH_HEADSET,
+    SOUND_AUDIO_PATH_SPEAKER,
+    SOUND_AUDIO_PATH_BLUETOOTH,
+    SOUND_AUDIO_PATH_STEREO_BT,
+    SOUND_AUDIO_PATH_HEADPHONE,
+    SOUND_AUDIO_PATH_BLUETOOTH_NO_NR,
+    SOUND_AUDIO_PATH_MIC1,
+    SOUND_AUDIO_PATH_MIC2,
+    SOUND_AUDIO_PATH_BLUETOOTH_WB,
+    SOUND_AUDIO_PATH_BLUETOOTH_WB_NO_NR
+} AudioPath;
+
+/**
+ * ExtraVolume
+ */
+typedef enum _ExtraVolume {
+    ORIGINAL_PATH,
+    EXTRA_VOLUME_PATH
+} ExtraVolume;
+
+/**
+ * Clock adjustment parameters.
+ */
+typedef enum _SoundClockCondition {
+    SOUND_CLOCK_STOP,
+    SOUND_CLOCK_START
+} SoundClockCondition;
+
+/**
+ * Call record adjustment parameters.
+ */
+typedef enum _CallRecCondition {
+    CALL_REC_STOP,
+    CALL_REC_START
+} CallRecCondition;
+
+/**
+ * Mute adjustment parameters.
+ */
+typedef enum _MuteCondition {
+      TX_UNMUTE, /* 0x00: TX UnMute */
+      TX_MUTE,   /* 0x01: TX Mute */
+      RX_UNMUTE, /* 0x02: RX UnMute */
+      RX_MUTE,   /* 0x03: RX Mute */
+      RXTX_UNMUTE, /* 0x04: RXTX UnMute */
+      RXTX_MUTE,   /* 0x05: RXTX Mute */  
+} MuteCondition;
+
+/**
+ * Two mic Solution control
+ * Two MIC Solution Device
+ */
+typedef enum __TwoMicSolDevice {
+    AUDIENCE,
+    FORTEMEDIA
+} TwoMicSolDevice;
+
+/**
+ * Two MIC Solution Report
+ */
+typedef enum __TwoMicSolReport {
+    TWO_MIC_SOLUTION_OFF,
+    TWO_MIC_SOLUTION_ON
+} TwoMicSolReport;
+
+/**
+ * DHA Mode
+ */
+typedef enum __DhaSolMode {
+    DHA_MODE_OFF,
+    DHA_MODE_ON
+} DhaSolMode;
+
+/**
+ * DHA Select
+ */
+typedef enum __DhaSolSelect {
+    DHA_SEL_LEFT,
+    DHA_SEL_RIGHT
+} DhaSolSelect;
+
+/**
+ * LoopbackTest parameters.
+ */
+typedef enum __LoopbackMode {
+    LOOPBACK_END,
+    LOOPBACK_ON_PCM,
+    LOOPBACK_ON_PACKET
+} LoopbackMode;
+
+typedef enum __LoopbackPath {
+    RECEIVER,
+    EARPHONE,
+    LOUDSPEAKER
+} LoopbackPath;
+
+
+/**
+ * Set in-call volume.
+ */
+int SetCallVolume(HRilClient client, SoundType type, int vol_level);
+
+/**
+ * Set external sound device path for noise reduction.
+ */
+int SetCallAudioPath(HRilClient client, AudioPath path, ExtraVolume mode);
+
+/**
+ * Set modem clock to master or slave.
+ */
+int SetCallClockSync(HRilClient client, SoundClockCondition condition);
+
+/**
+ * Set modem vtcall clock to master or slave.
+ */
+int SetVideoCallClockSync(HRilClient client, SoundClockCondition condition);
+
+/**
+ * Set voice call record
+ */
+int SetCallRecord(HRilClient client, CallRecCondition condition);
+
+/**
+ * Set mute or unmute
+ */
+int SetMute(HRilClient client, MuteCondition condition);
+
+/**
+ * Get mute state
+ */
+int GetMute(HRilClient client, RilOnComplete handler);
+
+int SetTwoMicControl(HRilClient client, TwoMicSolDevice device, TwoMicSolReport report);
+
+/**
+ * DHA Solution Set
+ */
+int SetDhaSolution(HRilClient client, DhaSolMode mode, DhaSolSelect select, char *parameter);
+
+/**
+ * Set Loopback Test Mode and Path
+ */
+int SetLoopbackTest(HRilClient client, LoopbackMode mode, AudioPath path);
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif // __SECRIL_CLIENT_H__
+
+// end of file
+