#include "CCAudioOut.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <vorbis/vorbisfile.h>
#include <FSystem.h>

using namespace Osp::Base;
using namespace Osp::Base::Collection;
using namespace Osp::Media;
using namespace Osp::Io;

namespace CocosDenshion {

#define PRE_BUFFERING_NUM 2
#define DEFAULT_VOLUME_LEVEL 5

typedef struct wave_tag
{
    char              ChunkID[5];
    unsigned long int ChunkSize;
    char              Format[5];
    char              SubChunk1ID[5];
    unsigned long int SubChunk1Size;
    unsigned short int   AudioFormat;
    unsigned short int   NumChannels;
    unsigned long int    SampleRate;
    unsigned long int    ByteRate;
    unsigned short int   BlockAlign;
    unsigned short int   BitsPerSample;
    char              SubChunk2ID[5];
    unsigned long int SubChunk2Size;
}WAVE;

static void GetWaveHeadInfo(File* pFile, WAVE& outWavHead)
{
	char szTmp[100] = {0};
	int i = 0;
	memset(&outWavHead, 0, sizeof(WAVE));
    pFile->Read(outWavHead.ChunkID, 4);
    pFile->Read(&(outWavHead.ChunkSize),4);
    pFile->Read(outWavHead.Format, 4);
    pFile->Read(outWavHead.SubChunk1ID, 4);
    pFile->Read(&(outWavHead.SubChunk1Size), 4);
    pFile->Read(&(outWavHead.AudioFormat),   2);
    pFile->Read(&(outWavHead.NumChannels),   2);
    pFile->Read(&(outWavHead.SampleRate), 4);
    pFile->Read(&(outWavHead.ByteRate),      4);
    pFile->Read(&(outWavHead.BlockAlign), 2);
    pFile->Read(&(outWavHead.BitsPerSample), 2);

	pFile->Seek(FILESEEKPOSITION_BEGIN, 0);
	pFile->Read(szTmp, 64);

	for (i = 0; i <= 60; i++)
	{
		if (szTmp[i] == 'd' && szTmp[i+1] == 'a' && szTmp[i+2] == 't' && szTmp[i+3] == 'a')
		{
			break;
		}
	}

	pFile->Seek(FILESEEKPOSITION_BEGIN, i);
    pFile->Read(outWavHead.SubChunk2ID, 4);
    pFile->Read(&(outWavHead.SubChunk2Size), 4);
}

int CCAudioOut::DecodeOgg(const char *infile)
{
    FILE *in=NULL;
    OggVorbis_File vf;
    int bs = 0;
    char buf[8192];
    int buflen = 8192;
    unsigned int written = 0;
    int ret;
    ogg_int64_t length = 0;
    ogg_int64_t done = 0;
    int size;
    int seekable = 0;
    int percent = 0;
    char* pPcmBuffer = NULL;

	in = fopen(infile, "rb");
	if(!in) {
		AppLog("ERROR: Failed to open input file:\n");
		return 1;
	}

    if(ov_open(in, &vf, NULL, 0) < 0) {
    	AppLog("ERROR: Failed to open input as vorbis\n");
        fclose(in);
//        fclose(out);
        return 1;
    }

    if(ov_seekable(&vf)) {
        seekable = 1;
        length = ov_pcm_total(&vf, 0);
        size = bits/8 * ov_info(&vf, 0)->channels;
    }

    if (ov_info(&vf,0)->channels == 2)
    {
    	__sampleChannelType = AUDIO_CHANNEL_TYPE_STEREO;
    }
    else
    {
    	__sampleChannelType = AUDIO_CHANNEL_TYPE_MONO;
    }

    __sampleRate = ov_info(&vf,0)->rate;
    __sampleBitdepth = AUDIO_TYPE_PCM_S16_LE;


    while((ret = ov_read(&vf, buf, buflen, endian, bits/8, sign, &bs)) != 0) {
        if(bs != 0) {
            AppLog("Only one logical bitstream currently supported\n");
            break;
        }

        if(ret < 0 && !quiet) {
            AppLog("Warning: hole in data\n");
            continue;
        }

        if (__pAllPcmBuffer == null)
        {
        	__pAllPcmBuffer = (char*)malloc(ret);
        }
        else
        {
			__pAllPcmBuffer = (char*)realloc(__pAllPcmBuffer, written+ret);
        }

        memcpy(__pAllPcmBuffer+written, buf, ret);

        written += ret;
        if(!quiet && seekable) {
            done += ret/size;
            if((double)done/(double)length * 200. > (double)percent) {
                percent = (double)done/(double)length *200;
                AppLog("\r\t[%5.1f%%]", (double)percent/2.);
            }
        }
    }

    __iAllPcmBufferSize = written;

//    if(seekable && !quiet)
//        AppLog("\n");

//    if(!raw)
//        rewrite_header(out, written); /* We don't care if it fails, too late */

    ov_clear(&vf);
    fclose(in);
//    fclose(out);
    return 0;
}


CCAudioOut::CCAudioOut()
{
	AppLog("Enter");
	__pAllPcmBuffer = null;
	__iAllPcmBufferSize = 0;
	__iAllPcmPos = 0;
	quiet = 0;
	bits = 16;
	endian = 0;
	raw = 0;
	sign = 1;
	__iFileType = 0;
	__pFile = null;
}

CCAudioOut::~CCAudioOut()
{
	AppLog("Enter");
	Finalize();
	if(__pAudioOut)
	{
		delete __pAudioOut;
		__pAudioOut = null;
	}

	if (__pAllPcmBuffer)
	{
		free(__pAllPcmBuffer);
		__pAllPcmBuffer = null;
	}
}

result CCAudioOut::Initialize(const char* pszFilePath)
{
	AppLog("Enter");
	// This is called when AudioOut form is moving on the foreground.
	result r = E_SUCCESS;
	__pAllPcmBuffer = null;
	__iAllPcmBufferSize = 0;
	__iAllPcmPos = 0;
	if(__checkInitFiniPair == false)
	{
		// Reset the configure variables
		__finishChecker =0;
		__bufWrittenCnt = PRE_BUFFERING_NUM;
		__buffReadCnt = 0;
		__buffWriteCnt = 0;


		result r = E_FAILURE;
		if (__pAudioOut == NULL)
		{
			__pAudioOut = new AudioOut();
			if (!__pAudioOut)
			{
				AppLog("[E_OUT_OF_MEMORY] m_pAudio new failed\n");
				return r;
			}

			r = __pAudioOut->Construct(*this);
			if (IsFailed(r))
			{
				AppLog("[Error] m_AudioOut.Construct failed");
				return r;
			}
		}
		else
		{
			AppLog("[Error] __pAudioOut is already existed\n");
		}

		String strFile(pszFilePath);
		if (strFile.EndsWith(".wav"))
		{
			__iFileType = 0;
			// Construct File for feeding buffers
			__pFile = new File();
			if(!__pFile)
			{
				AppLog("[Error] __pFile new failed\n");
				return E_SYSTEM;
			}

			r = __pFile->Construct(pszFilePath, L"rb");
			if (IsFailed(r)) {
				AppLog("[Error] __pFile.Construct failed : %d \n", r);
				return r;
			}

			WAVE wavHead;
			GetWaveHeadInfo(__pFile, wavHead);

			if (wavHead.BitsPerSample == 8)
			{
				__sampleBitdepth = AUDIO_TYPE_PCM_U8;

			}
			else if (wavHead.BitsPerSample == 16)
			{
				__sampleBitdepth = AUDIO_TYPE_PCM_S16_LE;
			}
			else
			{
				__sampleBitdepth = AUDIO_TYPE_NONE;
			}

			if (wavHead.NumChannels == 1)
			{
				__sampleChannelType = AUDIO_CHANNEL_TYPE_MONO;
			}
			else if (wavHead.NumChannels == 2)
			{
				__sampleChannelType = AUDIO_CHANNEL_TYPE_STEREO;
			}
			else
			{
				__sampleChannelType = AUDIO_CHANNEL_TYPE_NONE;
			}

			__sampleRate = wavHead.SampleRate;
		}
		else if (strFile.EndsWith(".ogg"))
		{
			__iFileType = 1;
			long long curTick, oldTick;
			Osp::System::SystemTime::GetTicks(oldTick);
			DecodeOgg(pszFilePath);
			Osp::System::SystemTime::GetTicks(curTick);
			AppLog("decode ogg to pcm waste %ld", (long)(curTick-oldTick));
		}
		// Prepare AudioOut
		r = __pAudioOut->Prepare( __sampleBitdepth, __sampleChannelType, __sampleRate );
		if (IsFailed(r))
		{
			AppLog("[Error] m_AudioOut.Prepare failed");
			return r;
		}

		__bufferSize = __pAudioOut->GetMinBufferSize();
		AppLog("[Info] __bufferSize=%d (MaxBuf=%d Min Size %d)\n", __bufferSize, __pAudioOut->GetMaxBufferSize(),__pAudioOut->GetMinBufferSize());

		// Reset Volume or keeping a volume level
		__volumeLevel = __volumeLevel == -1 ? DEFAULT_VOLUME_LEVEL : __volumeLevel;
		r = __pAudioOut->SetVolume(DEFAULT_VOLUME_LEVEL);
		if (IsFailed(r))
		{
			AppLog("[Error] m_AudioOut.SetVolume failed");
			return r;
		}

		r = __byteBuffer[0].Construct(__bufferSize);
		if (E_SUCCESS != r)
		{
			AppLog( "[Error] __byteBuffer[0].Construct failed..%d ",r);
			return E_OUT_OF_MEMORY;
		}
		r = __byteBuffer[1].Construct(__bufferSize);
		if (E_SUCCESS != r)
		{
			AppLog( "[Error] __byteBuffer[1].Construct failed..%d ",r);
			return E_OUT_OF_MEMORY;
		}
		r = __byteBuffer[2].Construct(__bufferSize);
		if (E_SUCCESS != r)
		{
			AppLog( "[Error] __byteBuffer[2].Construct failed..%d ",r);
			return E_OUT_OF_MEMORY;
		}
		r = __byteBuffer[3].Construct(__bufferSize);
		if (E_SUCCESS != r)
		{
			AppLog( "[Error] __byteBuffer[3].Construct failed..%d ",r);
			return E_OUT_OF_MEMORY;
		}

		for (int i=0; i<4; i++)
		{
			FeedBuffer(); // Feeding buffers(4)
		}

		r = __pAudioOut->WriteBuffer(__byteBuffer[0]);
		if (IsFailed(r))
		{
			AppLog("[Error] m_AudioOut.WriteBuffer failed : %d\n", r);
			return r;
		}

		r = __pAudioOut->WriteBuffer(__byteBuffer[1]);
		if (IsFailed(r))
		{
			AppLog("[Error] m_AudioOut.WriteBuffer failed : %d\n", r);
			return r;
		}

		__checkInitFiniPair = true;

	}else{
		AppLog("[WANRNING] The application state is not proper");
	}
	return r;
}

result CCAudioOut::FeedBuffer (void)
{
	int readSize = 0;
	result ret = E_SUCCESS;

	if (__iFileType == 0)
	{
		/*
		 *  Read buffer from file
		 */
		if(__pFile)
		{
			readSize = __pFile->Read((char *)__byteBuffer[__buffWriteCnt].GetPointer (), __bufferSize);
			if(readSize != 0)
			{
				__buffWriteCnt ++;
				if (4 == __buffWriteCnt)
				{
					__buffWriteCnt = 0;
				}
			}else
			{
				AppLog("readSize = %d", readSize);
				__finishChecker = PRE_BUFFERING_NUM;
				__buffWriteCnt = 0;
			}
		}
	}
	else if (__iFileType == 1)
	{// ogg
		int iRemainSize = __iAllPcmBufferSize - __iAllPcmPos;
		if (iRemainSize < __bufferSize)
		{
			memcpy((void*)__byteBuffer[__buffWriteCnt].GetPointer (), __pAllPcmBuffer+__iAllPcmPos, iRemainSize);
			__iAllPcmPos += iRemainSize;
		}
		else
		{
			memcpy((void*)__byteBuffer[__buffWriteCnt].GetPointer (), __pAllPcmBuffer+__iAllPcmPos, __bufferSize);
			__iAllPcmPos += __bufferSize;
		}

		if (__iAllPcmPos < __iAllPcmBufferSize)
		{
			__buffWriteCnt ++;
			if (4 == __buffWriteCnt)
			{
				__buffWriteCnt = 0;
			}
		}
		else
		{
			AppLog("readSize = %d", readSize);
			__finishChecker = PRE_BUFFERING_NUM;
			__buffWriteCnt = 0;
			__iAllPcmPos = 0;
		}
	}

	return ret;
}


void CCAudioOut::ReFeedBuffer(void)
{
	result r = E_SUCCESS;
	for (int i=0; i<4; i++)
	{
		FeedBuffer(); // Feeding buffers(4)
	}

	r = __pAudioOut->WriteBuffer(__byteBuffer[0]);
	if (IsFailed(r))
	{
		AppLog("[Error] m_AudioOut.WriteBuffer failed : %d\n", r);
	}

	r = __pAudioOut->WriteBuffer(__byteBuffer[1]);
	if (IsFailed(r))
	{
		AppLog("[Error] m_AudioOut.WriteBuffer failed : %d\n", r);
	}
}

void CCAudioOut::Play(void)
{
	AppLog("Enter");

	result ret = E_SUCCESS;
	AudioOutState state = __pAudioOut->GetState();
	if( state == AUDIOOUT_STATE_STOPPED && __checkRestart)
	{
		// Last buffer is checked. Reset.
		__checkRestart = false;
		__bufWrittenCnt = PRE_BUFFERING_NUM;
		__buffReadCnt = 0;
		__pFile->Seek(FILESEEKPOSITION_BEGIN,0);

		ReFeedBuffer();
		ret = __pAudioOut->Start();
		if (IsFailed(ret))
		{
			AppLog("[Error] m_AudioOut.Start failed : %d\n", ret);
		}

	}else if(state == AUDIOOUT_STATE_PREPARED || state == AUDIOOUT_STATE_STOPPED)
	{

		ret = __pAudioOut->Start();
		if (IsFailed(ret))
		{
			AppLog("[Error] m_AudioOut.Start failed : %d\n", ret);
		}
	}

}

void CCAudioOut::Stop(void)
{
	AppLog("Enter");

	result ret = E_SUCCESS;
	if( __pAudioOut->GetState() == AUDIOOUT_STATE_PLAYING )
	{
		ret = __pAudioOut->Stop();
		if (IsFailed(ret))
		{
			AppLog("[Error] m_AudioOut.Stop failed : %d\n", ret);
		}
	}
	if (__pAudioOut)
	{
		delete __pAudioOut;
		__pAudioOut = null;
	}
	delete this;
}

void CCAudioOut::OnAudioOutBufferEndReached(Osp::Media::AudioOut& src)
{
	int ret;
//	AppLog("thread name is %S", Thread::GetCurrentThread()->GetName().GetPointer());
	AppLog("__buffReadCnt = %d", __buffReadCnt);
	__byteBuffer[__buffReadCnt++].Clear ();

	if (4 == __buffReadCnt)
			__buffReadCnt = 0;

	if(__finishChecker == 0)
	{
		ret = src.WriteBuffer(__byteBuffer[__bufWrittenCnt++]);
		if (4 == __bufWrittenCnt)
			__bufWrittenCnt = 0;
		FeedBuffer();

	}else
	{
		AppLog("__finishChecker = %d", __finishChecker);
		__finishChecker--;
		if(__finishChecker == 0)
		{
			AppLog("stop...");
			__checkRestart = true;
			Stop();
		}
	}
}

void CCAudioOut::OnAudioOutInterrupted(Osp::Media::AudioOut& src)
{
	AppLog("Enter");

	Finalize();
}

void CCAudioOut::OnAudioOutReleased(Osp::Media::AudioOut& src)
{
	AppLog("Enter");

//cjh	Initialize();
}

void CCAudioOut::Finalize(void)
{
	AppLog("Enter");

	if(__checkInitFiniPair)
	{

		// Set OnAudioOutBufferEndReached stop.
		__finishChecker = PRE_BUFFERING_NUM;
		__checkRestart = false;

		if(__pAudioOut)
		{

			AudioOutState state = __pAudioOut->GetState();
			result r = E_SUCCESS;

			if(state == AUDIOOUT_STATE_PLAYING)
			{
				r = __pAudioOut->Reset();
				if(IsFailed(r))
				{
					AppLog("[Error] AudioOut Reset is failed");
				}

			}

			state = __pAudioOut->GetState();

			if(state == AUDIOOUT_STATE_PREPARED || state == AUDIOOUT_STATE_STOPPED)
			{
				r = __pAudioOut->Unprepare();
				if(IsFailed(r))
				{
					AppLog("[Error] AudioOut UnPrepare is failed");
				}
			}
		}

		if(__pFile)
		{
			delete __pFile;
			__pFile = null;
		}

		__checkInitFiniPair = false;
	}else{
		AppLog("[WANRNING] This application state is not proper");
	}
}

}