/*
 *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include "shared_data.h"

#include "audio_processing.h"
#include "critical_section_wrapper.h"
#include "channel.h"
#include "output_mixer.h"
#include "trace.h"
#include "transmit_mixer.h"

namespace webrtc {

namespace voe {

static WebRtc_Word32 _gInstanceCounter = 0;

SharedData::SharedData() :
    _instanceId(++_gInstanceCounter),
    _channelManager(_gInstanceCounter),
    _engineStatistics(_gInstanceCounter),
    _usingExternalAudioDevice(false),
    _audioDevicePtr(NULL),
    _audioProcessingModulePtr(NULL),
    _moduleProcessThreadPtr(ProcessThread::CreateProcessThread()),
    _apiCritPtr(CriticalSectionWrapper::CreateCriticalSection()),
    _externalRecording(false),
    _externalPlayout(false)
{
    Trace::CreateTrace();
    Trace::SetLevelFilter(WEBRTC_VOICE_ENGINE_DEFAULT_TRACE_FILTER);
    if (OutputMixer::Create(_outputMixerPtr, _gInstanceCounter) == 0)
    {
        _outputMixerPtr->SetEngineInformation(_engineStatistics);
    }
    if (TransmitMixer::Create(_transmitMixerPtr, _gInstanceCounter) == 0)
    {
        _transmitMixerPtr->SetEngineInformation(*_moduleProcessThreadPtr,
                                                _engineStatistics,
                                                _channelManager);
    }
    _audioDeviceLayer = AudioDeviceModule::kPlatformDefaultAudio;
}

SharedData::~SharedData()
{
    OutputMixer::Destroy(_outputMixerPtr);
    TransmitMixer::Destroy(_transmitMixerPtr);
    if (!_usingExternalAudioDevice)
    {
        AudioDeviceModule::Destroy(_audioDevicePtr);
    }
    AudioProcessing::Destroy(_audioProcessingModulePtr);
    delete _apiCritPtr;
    ProcessThread::DestroyProcessThread(_moduleProcessThreadPtr);
    Trace::ReturnTrace();
}

WebRtc_UWord16
SharedData::NumOfSendingChannels()
{
    WebRtc_Word32 numOfChannels = _channelManager.NumOfChannels();
    if (numOfChannels <= 0)
    {
        return 0;
    }
	
    WebRtc_UWord16 nChannelsSending(0);
    WebRtc_Word32* channelsArray = new WebRtc_Word32[numOfChannels];

    _channelManager.GetChannelIds(channelsArray, numOfChannels);
    for (int i = 0; i < numOfChannels; i++)
    {
        voe::ScopedChannel sc(_channelManager, channelsArray[i]);
        Channel* chPtr = sc.ChannelPtr();
        if (chPtr)
        {
            if (chPtr->Sending())
            {
                nChannelsSending++;
            }
        }
    }
    delete [] channelsArray;
    return nChannelsSending;
}

}  //  namespace voe

}  //  namespace webrtc