X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=src%2Fcpp%2FCAudioInput.cpp;h=40521fbf6bef474f56ae33b149f5a5a7a482777b;hb=907fc08da90dfa673c95794b5bf7b7980e8c3d76;hp=e2c2b77936a8353e95edbc17caaa9ba073829425;hpb=aae671cb5d6dcc26137b13873182ff83802d0de0;p=platform%2Fcore%2Fapi%2Faudio-io.git

diff --git a/src/cpp/CAudioInput.cpp b/src/cpp/CAudioInput.cpp
index e2c2b77..40521fb 100644
--- a/src/cpp/CAudioInput.cpp
+++ b/src/cpp/CAudioInput.cpp
@@ -15,33 +15,41 @@
  */
 
 
+#include <new>
+
+#include <pulse/pulseaudio.h>
 #include "CAudioIODef.h"
+#include <sched.h>
 
+#define RECORDER_PRIVILEGE "http://tizen.org/privilege/recorder"
+#define CLIENT_NAME "AUDIO_IO_PA_CLIENT"
 
 using namespace std;
 using namespace tizen_media_audio;
 
+struct PrivilegeData {
+    bool isPrivilegeAllowed;
+    pa_threaded_mainloop *paMainloop;
+};
 
 /**
  * class CAudioInput inherited by CAudioIO
  */
-CAudioInput::CAudioInput(CAudioInfo& info)
-    : CAudioIO(info),
-      mpSyncReadDataPtr(NULL),
-      mSyncReadIndex(0),
-      mSyncReadLength(0),
-      mIsUsedSyncRead(true) {
+CAudioInput::CAudioInput(CAudioInfo& info) :
+    CAudioIO(info),
+    __mIsUsedSyncRead(true),
+    __mIsInit(false) {
+    mDirection = CAudioInfo::EAudioDirection::AUDIO_DIRECTION_IN;
 }
 
 CAudioInput::CAudioInput(
         unsigned int            sampleRate,
         CAudioInfo::EChannel    channel,
         CAudioInfo::ESampleType type,
-        CAudioInfo::EAudioType  audioType)
-      : mpSyncReadDataPtr(NULL),
-        mSyncReadIndex(0),
-        mSyncReadLength(0),
-        mIsUsedSyncRead(true) {
+        CAudioInfo::EAudioType  audioType) :
+    __mIsUsedSyncRead(true),
+    __mIsInit(false) {
+    mDirection = CAudioInfo::EAudioDirection::AUDIO_DIRECTION_IN;
     mAudioInfo = CAudioInfo(sampleRate, channel, type, audioType, -1);
 }
 
@@ -55,11 +63,10 @@ void CAudioInput::onStream(CPulseAudioClient* pClient, size_t length) {
      * Does not call CAudioIO::onStream() for synchronization
      * if a user is using read()
      */
-    if (mIsUsedSyncRead == true) {
+    if (__mIsUsedSyncRead == true) {
 #ifdef _AUDIO_IO_DEBUG_TIMING_
-        AUDIO_IO_LOGD("Sync Read Mode! - signal! - pClient:[%p], length:[%d]", pClient, length);
+        AUDIO_IO_LOGD("Sync Read Mode! - pClient:[%p], length:[%d]", pClient, length);
 #endif
-        internalSignal();
         return;
     }
 
@@ -72,427 +79,350 @@ void CAudioInput::onStream(CPulseAudioClient* pClient, size_t length) {
     CAudioIO::onStream(pClient, length);
 }
 
-void CAudioInput::onInterrupt(CAudioSessionHandler* pHandler, int id, mm_sound_focus_type_e focus_type, mm_sound_focus_state_e state, const char *reason_for_change, const char *additional_info) {
-    assert(pHandler);
-    AUDIO_IO_LOGD("[pHandler:0x%x], [focus_type:%d], [state:%d], [reason_for_change:%s], [additional_info:%s]", pHandler, focus_type, state, reason_for_change, additional_info);
-    CAudioIO::onInterrupt(pHandler, id, focus_type, state, reason_for_change, additional_info);
+void CAudioInput::__setInit(bool flag) {
+    __mIsInit = flag;
 }
 
-void CAudioInput::onSignal(CAudioSessionHandler* pHandler, mm_sound_signal_name_t signal, int value) {
-    assert(pHandler);
-    AUDIO_IO_LOGD("[pHandler:0x%x], [signal:%d], [value:%d]", pHandler, signal, value);
-    CAudioIO::onSignal(pHandler, signal, value);
+bool CAudioInput::__IsInit() {
+    return (CAudioIO::isInit() == true && __mIsInit == true);
 }
 
-void CAudioInput::setInit(bool flag) {
-    mIsInit = flag;
+bool CAudioInput::__IsReady() {
+    return CAudioIO::IsReady();
 }
 
-bool CAudioInput::IsInit() {
-    return (CAudioIO::isInit() == true && mIsInit == true);
+static void __contextStateChangeCb(pa_context* c, void* user_data) {
+    pa_threaded_mainloop *paMainloop = static_cast<pa_threaded_mainloop*>(user_data);
+    assert(paMainloop);
+    assert(c);
+
+    switch (pa_context_get_state(c)) {
+    case PA_CONTEXT_READY:
+        AUDIO_IO_LOGD("The context is ready");
+        pa_threaded_mainloop_signal(paMainloop, 0);
+        break;
+
+    case PA_CONTEXT_FAILED:
+    case PA_CONTEXT_TERMINATED:
+        AUDIO_IO_LOGD("The context is lost");
+        pa_threaded_mainloop_signal(paMainloop, 0);
+        break;
+
+    case PA_CONTEXT_UNCONNECTED:
+    case PA_CONTEXT_CONNECTING:
+    case PA_CONTEXT_AUTHORIZING:
+    case PA_CONTEXT_SETTING_NAME:
+        break;
+    }
 }
 
-bool CAudioInput::IsReady() {
-    return CAudioIO::IsReady();
+static void __checkPrivilegeCb(pa_context *c, int success, void *user_data) {
+    AUDIO_IO_LOGD("pa_context[%p], success[%d], user_data[%p]", c, success, user_data);
+    assert(c);
+    assert(user_data);
+
+    PrivilegeData *prData = static_cast<PrivilegeData*>(user_data);
+    prData->isPrivilegeAllowed = success ? true : false;
+
+    pa_threaded_mainloop_signal(prData->paMainloop, 0);
 }
 
-void CAudioInput::initialize() throw (CAudioError) {
-    if (IsInit() == true) {
-        return;
+static bool __IsPrivilegeAllowed() {
+    pa_operation *o;
+    pa_context *c;
+    int err = 0;
+    PrivilegeData prData;
+
+    prData.paMainloop = pa_threaded_mainloop_new();
+    if (prData.paMainloop == NULL)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_OUT_OF_MEMORY, "Failed pa_threaded_mainloop_new()");
+
+    c = pa_context_new(pa_threaded_mainloop_get_api(prData.paMainloop), CLIENT_NAME);
+    if (c == NULL)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_OUT_OF_MEMORY, "Failed pa_context_new()");
+
+    pa_context_set_state_callback(c, __contextStateChangeCb, prData.paMainloop);
+
+    if (pa_context_connect(c, NULL, PA_CONTEXT_NOFLAGS, NULL) < 0)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_OUT_OF_MEMORY, "Failed pa_context_connect()");
+
+    pa_threaded_mainloop_lock(prData.paMainloop);
+
+    if (pa_threaded_mainloop_start(prData.paMainloop) < 0) {
+        pa_threaded_mainloop_unlock(prData.paMainloop);
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_FAILED_OPERATION, "Failed pa_threaded_mainloop_start()");
     }
 
-    try {
-        CAudioIO::initialize();
+    while (true) {
+        pa_context_state_t state;
+        state = pa_context_get_state(c);
 
-        // Create ASM Handler
-        mpAudioSessionHandler = new CAudioSessionHandler(CAudioSessionHandler::AUDIO_SESSION_TYPE_CAPTURE, mAudioInfo, this);
-        if (mpAudioSessionHandler == NULL) {
-            THROW_ERROR_MSG(CAudioError::ERROR_OUT_OF_MEMORY, "Failed to allocate CAudioSessionHandler object");
+        if (state == PA_CONTEXT_READY)
+            break;
+
+        if (!PA_CONTEXT_IS_GOOD(state)) {
+            err = pa_context_errno(c);
+            pa_threaded_mainloop_unlock(prData.paMainloop);
+            THROW_ERROR_MSG_FORMAT(CAudioError::EError::ERROR_INTERNAL_OPERATION,
+                                   "pa_context's state is not good : err[%d]", err);
         }
 
-        // Initialize ASM Handler
-        mpAudioSessionHandler->initialize();
+        /* Wait until the context is ready */
+        pa_threaded_mainloop_wait(prData.paMainloop);
+    }
+
+    o = pa_context_check_privilege(c, RECORDER_PRIVILEGE, __checkPrivilegeCb, &prData);
+    if (!o) {
+        pa_threaded_mainloop_unlock(prData.paMainloop);
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_FAILED_OPERATION, "Failed to pa_context_check_privilege()");
+    }
+    while (pa_operation_get_state(o) == PA_OPERATION_RUNNING)
+        pa_threaded_mainloop_wait(prData.paMainloop);
+    pa_operation_unref(o);
+
+    pa_threaded_mainloop_unlock(prData.paMainloop);
+    pa_threaded_mainloop_stop(prData.paMainloop);
+    pa_context_disconnect(c);
+    pa_context_unref(c);
+    pa_threaded_mainloop_free(prData.paMainloop);
+
+    return prData.isPrivilegeAllowed;
+}
 
-        setInit(true);
-        CAudioIO::onStateChanged(CAudioInfo::AUDIO_IO_STATE_IDLE);
-    } catch (CAudioError err) {
+void CAudioInput::initialize() {
+    if (__IsInit() == true)
+        return;
+
+    if (__IsPrivilegeAllowed() == false)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_PERMISSION_DENIED, "No privilege for record");
+
+    try {
+        CAudioIO::initialize();
+       __setInit(true);
+    } catch (CAudioError& e) {
         finalize();
-        throw err;
+        throw;
     }
+
+    CAudioIO::onStateChanged(CAudioInfo::EAudioIOState::AUDIO_IO_STATE_IDLE);
 }
 
 void CAudioInput::finalize() {
-    if (IsInit() == false) {
+    if (__IsInit() == false) {
         AUDIO_IO_LOGD("Did not initialize");
         return;
     }
 
-    SAFE_FINALIZE(mpAudioSessionHandler);
-    SAFE_DELETE(mpAudioSessionHandler);
-
     CAudioIO::finalize();
 
-    setInit(false);
+    __setInit(false);
 }
 
-void CAudioInput::prepare() throw (CAudioError) {
-    if (IsInit() == false) {
-        THROW_ERROR_MSG(CAudioError::ERROR_NOT_INITIALIZED, "Did not initialize CAudioInput");
-    }
+void CAudioInput::prepare() {
+    if (__IsInit() == false)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_NOT_INITIALIZED, "Did not initialize CAudioInput");
 
-    if (IsReady() == true) {
+    if (__IsReady() == true) {
         AUDIO_IO_LOGD("Already prepared CAudioInput");
+        CAudioIO::prepare();
         return;
     }
 
-    try {
-        internalLock();
-
-        // Check to invalid AudioType
-        CAudioInfo::EAudioType audioType = mAudioInfo.getAudioType();
-        if (audioType < CAudioInfo::AUDIO_IN_TYPE_MEDIA || audioType > CAudioInfo::AUDIO_IN_TYPE_LOOPBACK) {
-            THROW_ERROR_MSG_FORMAT(CAudioError::ERROR_INVALID_ARGUMENT, "The audioType is invalid [type:%d]", static_cast<int>(audioType));
-        }
-
-        if (mpAudioSessionHandler->getId() < 0) {  //Did not registerSound()
-            // Check session to skip registration
-            if (isForceIgnore() == false && mpAudioSessionHandler->isSkipSessionEvent() == false) {
-                // Register ASM Listener
-                AUDIO_IO_LOGD("Register ASM Listener");
-                mpAudioSessionHandler->registerSound();
-            }
-        }
+    /* Check invalid AudioType */
+    CAudioInfo::EAudioType audioType = mAudioInfo.getAudioType();
+    if (audioType < CAudioInfo::EAudioType::AUDIO_IN_TYPE_MEDIA ||
+        audioType >= CAudioInfo::EAudioType::AUDIO_OUT_TYPE_MEDIA)
+        THROW_ERROR_MSG_FORMAT(CAudioError::EError::ERROR_INVALID_ARGUMENT,
+                               "The audioType is invalid [type:%d]", static_cast<int>(audioType));
 
-        // Init StreamSpec
-        AUDIO_IO_LOGD("Set Strem Spec : CPulseStreamSpec::STREAM_LATENCY_INPUT_MID");
-        CPulseStreamSpec::EStreamLatency streamSpec = CPulseStreamSpec::STREAM_LATENCY_INPUT_MID;
+    try {
+        /* Init StreamSpec */
+        AUDIO_IO_LOGD("Set Stream Spec : CPulseStreamSpec::STREAM_LATENCY_INPUT_DEFAULT");
+        CPulseStreamSpec::EStreamLatency streamSpec = CPulseStreamSpec::EStreamLatency::STREAM_LATENCY_INPUT_DEFAULT;
         CPulseStreamSpec spec(streamSpec, mAudioInfo);
 
-        // Create PulseAudio Handler
-        mpPulseAudioClient = new CPulseAudioClient(CPulseAudioClient::STREAM_DIRECTION_RECORD, spec, this);
-        if (mpPulseAudioClient == NULL) {
-            THROW_ERROR_MSG(CAudioError::ERROR_OUT_OF_MEMORY, "Failed to allocate CPulseAudioClient object");
-        }
-
-        // Initialize PulseAudio Handler
+        internalLock();
+        mpPulseAudioClient = new CPulseAudioClient(CPulseAudioClient::EStreamDirection::STREAM_DIRECTION_RECORD, spec, this);
         mpPulseAudioClient->initialize();
-
-        if (isForceIgnore() == false && mpAudioSessionHandler->isSkipSessionEvent() == false) {
-            /* Updates ASM to PLAYING */
-            mpAudioSessionHandler->updatePlaying();
-        }
-
+#ifndef DISABLE_MOBILE_BACK_COMP
+        /* Uncork stream which is created with CORKED flag */
+        mpPulseAudioClient->cork(false);
+#endif
         internalUnlock();
 
-        // Do Prepare
         CAudioIO::prepare();
-    } catch (CAudioError e) {
+    } catch (CAudioError& e) {
+        SAFE_FINALIZE(mpPulseAudioClient);
+        SAFE_DELETE(mpPulseAudioClient);
         internalUnlock();
-        throw e;
+        throw;
+    } catch (const std::bad_alloc&) {
+//LCOV_EXCL_START
+        internalUnlock();
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_OUT_OF_MEMORY, "Failed to allocate CPulseAudioClient object");
+//LCOV_EXCL_STOP
     }
 }
 
-void CAudioInput::unprepare() throw (CAudioError) {
-    if (IsInit() == false) {
-        THROW_ERROR_MSG(CAudioError::ERROR_NOT_INITIALIZED, "Did not initialize CAudioInput");
-    }
+void CAudioInput::unprepare() {
+    if (__IsInit() == false)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_NOT_INITIALIZED,
+                        "Did not initialize CAudioInput");
 
-    if (IsReady() == false) {
+    if (__IsReady() == false) {
         AUDIO_IO_LOGD("Already unprepared");
         return;
     }
 
-    try{
-        // Do unprepare
-        CAudioIO::unprepare();
+    CAudioIO::unprepare();
 
+    try {
         internalLock();
-
+        if (mpPulseAudioClient && mpPulseAudioClient->isInThread())
+            THROW_ERROR_MSG(CAudioError::EError::ERROR_INVALID_OPERATION, "Can't unprepare inside pulseaudio thread");
         SAFE_FINALIZE(mpPulseAudioClient);
         SAFE_DELETE(mpPulseAudioClient);
-
-        if (mpAudioSessionHandler->getId() >= 0) {
-            /* Updates ASM to STOP */
-            if (isForceIgnore() == false && mpAudioSessionHandler->isSkipSessionEvent() == false) {
-                mpAudioSessionHandler->updateStop();
-            }
-
-            bool isSkip = mpAudioSessionHandler->isSkipSessionEvent();
-            if (isSkip == false) {
-                mpAudioSessionHandler->unregisterSound();
-            }
-        }
-
         internalUnlock();
-
-        CAudioIO::onStateChanged(CAudioInfo::AUDIO_IO_STATE_IDLE);
-    } catch (CAudioError e) {
+    } catch (CAudioError& e) {
         internalUnlock();
-        throw e;
+        throw;
     }
+
+    CAudioIO::onStateChanged(CAudioInfo::EAudioIOState::AUDIO_IO_STATE_IDLE);
 }
 
-void CAudioInput::pause() throw (CAudioError) {
-    if (IsInit() == false || IsReady() == false) {
-        THROW_ERROR_MSG(CAudioError::ERROR_NOT_INITIALIZED, "Did not initialize or prepare CAudioInput");
-    }
+void CAudioInput::pause() {
+    if (__IsInit() == false || __IsReady() == false)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_NOT_INITIALIZED,
+                        "Did not initialize or prepare CAudioInput");
 
-    try{
-        CAudioIO::pause();
+    if (CAudioIO::getState() != CAudioInfo::EAudioIOState::AUDIO_IO_STATE_RUNNING)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_INVALID_STATE,
+                        "Can't pause if not in Running state");
 
-        internalLock();
+    if (mpPulseAudioClient->isInThread() == true)
+        THROW_ERROR_MSG_FORMAT(CAudioError::EError::ERROR_INVALID_OPERATION, "Can't pause in thread");
 
-        /* Updates ASM to STOP */
-        if (isForceIgnore() == false && mpAudioSessionHandler->isSkipSessionEvent() == false) {
-            mpAudioSessionHandler->updateStop();
-        }
-
-        internalUnlock();
-
-        CAudioIO::onStateChanged(CAudioInfo::AUDIO_IO_STATE_PAUSED);
-    } catch (CAudioError e) {
-        internalUnlock();
-        throw e;
-    }
+    CAudioIO::pause();
+    CAudioIO::onStateChanged(CAudioInfo::EAudioIOState::AUDIO_IO_STATE_PAUSED);
 }
 
-void CAudioInput::resume() throw (CAudioError) {
-    if (IsInit() == false || IsReady() == false) {
-        THROW_ERROR_MSG(CAudioError::ERROR_NOT_INITIALIZED, "Did not initialize or prepare CAudioInput");
-    }
+void CAudioInput::resume() {
+    if (__IsInit() == false || __IsReady() == false)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_NOT_INITIALIZED,
+                        "Did not initialize or prepare CAudioInput");
 
-    try {
-        internalLock();
+    if (CAudioIO::getState() != CAudioInfo::EAudioIOState::AUDIO_IO_STATE_PAUSED)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_INVALID_STATE,
+                        "Can't resume if not in Paused state");
 
-        if (isForceIgnore() == false && mpAudioSessionHandler->isSkipSessionEvent() == false) {
+    if (mpPulseAudioClient->isInThread() == true)
+        THROW_ERROR_MSG_FORMAT(CAudioError::EError::ERROR_INVALID_OPERATION, "Can't resume in thread");
 
-            /* Updates ASM to PLAYING */
-            mpAudioSessionHandler->updatePlaying();
-        }
-
-        internalUnlock();
-
-        CAudioIO::resume();
-
-        CAudioIO::onStateChanged(CAudioInfo::AUDIO_IO_STATE_RUNNING);
-    } catch (CAudioError e) {
-        internalUnlock();
-        throw e;
-    }
+    CAudioIO::resume();
+    CAudioIO::onStateChanged(CAudioInfo::EAudioIOState::AUDIO_IO_STATE_RUNNING);
 }
 
-void CAudioInput::drain() throw (CAudioError) {
-    if (IsInit() == false || IsReady() == false) {
-        THROW_ERROR_MSG(CAudioError::ERROR_NOT_INITIALIZED, "Did not initialize or prepare CAudioInput");
-    }
-
-    try{
-        CAudioIO::drain();
-    } catch (CAudioError e) {
-        internalUnlock();
-        throw e;
-    }
+void CAudioInput::drain() {
+    THROW_ERROR_MSG(CAudioError::EError::ERROR_NOT_SUPPORTED, "Did not support drain of CAudioInput");
 }
 
-void CAudioInput::flush() throw (CAudioError) {
-    if (IsInit() == false || IsReady() == false) {
-        THROW_ERROR_MSG(CAudioError::ERROR_NOT_INITIALIZED, "Did not initialize or prepare CAudioInput");
-    }
+void CAudioInput::flush() {
+    if (__IsInit() == false || __IsReady() == false)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_NOT_INITIALIZED,
+                        "Did not initialize or prepare CAudioInput");
 
-    try {
-        CAudioIO::flush();
-    } catch (CAudioError e) {
-        internalUnlock();
-        throw e;
-    }
+    CAudioIO::flush();
 }
 
-int CAudioInput::getBufferSize() throw (CAudioError) {
-    if (IsInit() == false) {
-        THROW_ERROR_MSG(CAudioError::ERROR_NOT_INITIALIZED, "Did not initialize CAudioInput");
-    }
-
-    if (IsReady() == false) {
-        AUDIO_IO_LOGD("Warning: Did not prepare CAudioInput, then return zero");
-        return 0;
-    }
-
-    int size = 0;
+int CAudioInput::getBufferSize() {
+    if (__IsInit() == false)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_NOT_INITIALIZED, "Did not initialize CAudioInput");
 
-    try {
-        internalLock();
-        size = mpPulseAudioClient->getBufferSize();
-        internalUnlock();
-    } catch (CAudioError err) {
-        internalUnlock();
-        throw err;
-    }
-
-    return size;
+    /* FIXME : return calculated size here to satisfy backward compatibility */
+    return (mAudioInfo.getSampleRate() * DEFAULT_PERIOD_SIZE) / 1000 * mAudioInfo.getSampleSize();
 }
 
-void CAudioInput::setStreamCallback(SStreamCallback callback) throw (CAudioError) {
-    if (IsInit() == false) {
-        THROW_ERROR_MSG(CAudioError::ERROR_NOT_INITIALIZED, "Did not initialize CAudioInput");
-    }
+void CAudioInput::setStreamCallback(SStreamCallback callback) {
+    if (__IsInit() == false)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_NOT_INITIALIZED, "Did not initialize CAudioInput");
 
-    internalLock();
-    if (callback.onStream == NULL) {
-        AUDIO_IO_LOGD("mIsUsedSyncRead = true");
-        mIsUsedSyncRead = true;
-    } else {
-        AUDIO_IO_LOGD("mIsUsedSyncRead = false");
-        mIsUsedSyncRead = false;
-    }
-    internalUnlock();
+    if (callback.onStream == NULL)
+        __mIsUsedSyncRead = true;
+    else
+        __mIsUsedSyncRead = false;
+    AUDIO_IO_LOGD("__mIsUsedSyncRead = %d", __mIsUsedSyncRead);
 
     CAudioIO::setStreamCallback(callback);
 }
 
-size_t CAudioInput::read(void* buffer, size_t length) throw (CAudioError) {
-    if (IsInit() == false || IsReady() == false) {
-        THROW_ERROR_MSG(CAudioError::ERROR_NOT_INITIALIZED, "Did not initialize or prepare CAudioInput");
-    }
+size_t CAudioInput::read(void* buffer, size_t length) {
+    if (__IsInit() == false || __IsReady() == false)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_NOT_INITIALIZED,
+                        "Did not initialize or prepare CAudioInput");
 
-    if (buffer == NULL) {
-        THROW_ERROR_MSG_FORMAT(CAudioError::ERROR_INVALID_ARGUMENT, "Parameters are invalid - buffer:%p, length:%d", buffer, length);
-    }
+    if (buffer == NULL)
+        THROW_ERROR_MSG_FORMAT(CAudioError::EError::ERROR_INVALID_ARGUMENT,
+                               "Parameters are NULL buffer:%p", buffer);
 
-    /* Checks synchronous flag */
-    if (mIsUsedSyncRead == false) {
-        THROW_ERROR_MSG(CAudioError::ERROR_NOT_SUPPORTED, "Does not support read() if receive stream callback");
-    }
+    if (CAudioIO::getState() != CAudioInfo::EAudioIOState::AUDIO_IO_STATE_RUNNING)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_INVALID_OPERATION,
+                        "Can't read if not in Running state");
 
-    internalLock();
+    /* Checks synchronous flag */
+    if (__mIsUsedSyncRead == false)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_INVALID_OPERATION,
+                        "Invalid operation of read() if receive stream callback");
 
-    size_t lengthIter = length;
     int ret = 0;
 
     try {
-        while (lengthIter > 0) {
-            size_t l;
-
-            while (mpSyncReadDataPtr == NULL) {
-                ret = mpPulseAudioClient->peek(&mpSyncReadDataPtr, &mSyncReadLength);
-                if (ret != 0) {
-                    THROW_ERROR_MSG_FORMAT(CAudioError::ERROR_INTERNAL_OPERATION, "Failed CPulseAudioClient::peek() ret:[%d]", ret);
-                }
-
-                if (mSyncReadLength <= 0) {
-#ifdef _AUDIO_IO_DEBUG_TIMING_
-                    AUDIO_IO_LOGD("readLength(%d byte) is not valid.. wait..", mSyncReadLength);
-#endif
-                    internalWait();
-                } else if (mpSyncReadDataPtr == NULL) {
-                    /* There's a hole in the stream, skip it. We could generate
-                     * silence, but that wouldn't work for compressed streams.
-                     */
-                    ret = mpPulseAudioClient->drop();
-                    if (ret != 0) {
-                        THROW_ERROR_MSG_FORMAT(CAudioError::ERROR_INTERNAL_OPERATION, "Failed CPulseAudioClient::drop() ret:[%d]", ret);
-                    }
-                } else {
-                    mSyncReadIndex = 0;
-                }
-            }//end of while (pReadData == NULL)
-
-            if (mSyncReadLength < lengthIter) {
-                l = mSyncReadLength;
-            } else {
-                l = lengthIter;
-            }
-
-            // Copy partial pcm data on out parameter
-#ifdef _AUDIO_IO_DEBUG_TIMING_
-            AUDIO_IO_LOGD("memcpy() that a peeked buffer(%p), index(%d), length(%d), on out buffer", (const uint8_t*)(mpSyncReadDataPtr) + mSyncReadIndex, mSyncReadIndex, l);
-#endif
-            memcpy(buffer, (const uint8_t*)mpSyncReadDataPtr + mSyncReadIndex, l);
+        internalLock();
 
-            // Move next position
-            buffer = (uint8_t*)buffer + l;
-            lengthIter -= l;
+        // If another thread did call unprepare, do not read
+        if (mpPulseAudioClient == NULL)
+            THROW_ERROR_MSG(CAudioError::EError::ERROR_NOT_INITIALIZED,
+                            "Did not initialize CPulseAudioClient");
 
-            // Adjusts the rest length
-            mSyncReadIndex  += l;
-            mSyncReadLength -= l;
+        // Block until read done
+        ret = mpPulseAudioClient->read(buffer, length);
+        internalUnlock();
 
-            if (mSyncReadLength == 0) {
-#ifdef _AUDIO_IO_DEBUG_TIMING_
-                AUDIO_IO_LOGD("mSyncReadLength is zero - Do drop()");
-#endif
-                ret = mpPulseAudioClient->drop();
-                if (ret != 0) {
-                    THROW_ERROR_MSG_FORMAT(CAudioError::ERROR_INTERNAL_OPERATION, "Failed CPulseAudioClient::drop() ret:[%d]", ret);
-                }
-
-                // Reset the internal pointer
-                mpSyncReadDataPtr = NULL;
-                mSyncReadLength   = 0;
-                mSyncReadIndex    = 0;
-            }
-        }//end of while (length > 0)
-    } catch (CAudioError e) {
+        sched_yield();
+    } catch (CAudioError& e) {
         internalUnlock();
-        throw e;
+        throw;
     }
 
-    internalUnlock();
-
-    return length;
+    return ret;
 }
 
-int CAudioInput::peek(const void** buffer, size_t* length) throw (CAudioError) {
-    if (IsInit() == false || IsReady() == false) {
-        THROW_ERROR_MSG(CAudioError::ERROR_NOT_INITIALIZED, "Did not initialize or prepare CAudioInput");
-    }
+int CAudioInput::peek(const void** buffer, size_t* length) {
+    if (__IsInit() == false || __IsReady() == false)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_NOT_INITIALIZED,
+                        "Did not initialize or prepare CAudioInput");
 
-    if (buffer == NULL || length == NULL) {
-        THROW_ERROR_MSG_FORMAT(CAudioError::ERROR_INVALID_ARGUMENT, "Parameters are NULL buffer:%p, length:%p", buffer, length);
-    }
+    if (buffer == NULL || length == NULL)
+        THROW_ERROR_MSG_FORMAT(CAudioError::EError::ERROR_INVALID_ARGUMENT,
+                               "Parameters are NULL buffer:%p, length:%p", buffer, length);
 
     /* Checks synchronous flag */
-    internalLock();
-    if (mIsUsedSyncRead == true) {
-        THROW_ERROR_MSG(CAudioError::ERROR_NOT_SUPPORTED, "Does not support peek() if does not receive a stream callback");
-    }
-    internalUnlock();
+    if (__mIsUsedSyncRead == true)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_INVALID_OPERATION,
+                        "Invalid operation of peek() if does not receive a stream callback");
 
-    int ret = 0;
-
-    try {
-        internalLock();
-        ret = mpPulseAudioClient->peek(buffer, length);
-        internalUnlock();
-    } catch (CAudioError e) {
-        internalUnlock();
-        throw e;
-    }
-
-    return ret;
+    return mpPulseAudioClient->peek(buffer, length);
 }
 
-int CAudioInput::drop() throw (CAudioError) {
-    if (IsInit() == false || IsReady() == false) {
-        THROW_ERROR_MSG(CAudioError::ERROR_NOT_INITIALIZED, "Did not initialize or prepare CAudioInput");
-    }
+int CAudioInput::drop() {
+    if (__IsInit() == false || __IsReady() == false)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_NOT_INITIALIZED,
+                        "Did not initialize or prepare CAudioInput");
 
     /* Checks synchronous flag */
-    internalLock();
-    if (mIsUsedSyncRead == true) {
-        THROW_ERROR_MSG(CAudioError::ERROR_NOT_SUPPORTED, "Does not support drop() if does not receive a stream callback");
-    }
-    internalUnlock();
-
-    int ret = 0;
-
-    try {
-        internalLock();
-        ret = mpPulseAudioClient->drop();
-        internalUnlock();
-    } catch (CAudioError e) {
-        internalUnlock();
-        throw e;
-    }
+    if (__mIsUsedSyncRead == true)
+        THROW_ERROR_MSG(CAudioError::EError::ERROR_INVALID_OPERATION,
+                        "Invalid operation of drop() if does not receive a stream callback");
 
-    return ret;
+    return mpPulseAudioClient->drop();
 }