/********************************************************

         Audio decoder interface
	 Copyright 2000 Eugene Kuznetsov (divx@euro.ru)

*********************************************************/
	 


#include "config.h"

#include "gsm61dec.h"
#include "mpeg/mpegsound.h"
//#include "mp3-decoder.h"
#include "pcm.h"
#include "acm.h"
#include "adpcm.h"
#include <audiodecoder.h>
#ifdef HAVE_AC3
#include "ac3.h"
#endif

#include <except.h>

#define __MODULE__ "Audio decoder"
IAudioDecoder* IAudioDecoder::Create(WAVEFORMATEX* format, void* extension)
{
    if(!format)
	return 0;
    IAudioDecoder* decoder;
//    in_fmt=*format;
    char s[256];
    switch(format->wFormatTag)
    {
	case 0x01://PCM
        decoder=new PCM_Decoder(format, extension);
	    printf("Audio in PCM format\n");
	    break;
	case 0x2://MS ADPCM
	    decoder=new ACM_Decoder(format, extension);;
	    printf("Audio in MS ADPCM format\n");
	    break;
	case 0x11://IMA ADPCM
	decoder=new ADPCM_Decoder(format, extension);;
	    printf("Audio in ADPCM format\n");
	    break;
	case 0x31://MS GSM 6.10
        case 0x32://MSN Audio
	    decoder=new MSGSM_Decoder(format, extension);;
	    printf("Audio in MS GSM 6.10 format\n");
	    break;
	case 0x50://MPEG Layer-1,2    
	    decoder=new Mpegtoraw(format, extension);;
//	    decoder=new MP3_Decoder(format, extension);
	    printf("Audio in MPEG Layer-1/2 format\n");
	    break;
	case 0x55://MPEG Layer-3
	    decoder=new Mpegtoraw(format, extension);
//	    decoder=new MP3_Decoder(format, extension);
	    printf("Audio in MPEG Layer-3 format\n");
	    break;
	case 0x160:
	case 0x161://DivX audio
	    decoder=new ACM_Decoder(format, extension);;
	    printf("Audio in DivX WMA format\n");
	    break;
	case 0x401://Intel Music Coder
	    decoder=new ACM_Decoder(format, extension);;
	    printf("Audio in IMC format\n");
	    break;
#ifdef HAVE_AC3
	case 0x2000://AC3
	    printf("Audio in AC3 format\n");
	    decoder=new AC3_Decoder(format, extension);
	    break;
#endif
	default:
	    sprintf(s,"Audio format ID %d unsupported\n", format->wFormatTag);
	    throw FATAL(s);
    }
    return decoder;
}
int IAudioDecoder::GetOutputFormat(WAVEFORMATEX* destfmt)
{
    if(destfmt==0)return -1;
//    if(m_status==0)return -1;
//    return decoder->GetOutFormat(destfmt);
    WAVEFORMATEX* srcfmt=&in_fmt;
    if(in_fmt.wBitsPerSample==0)
	in_fmt.wBitsPerSample=16;
    if(in_fmt.wBitsPerSample==4)//ADPCM
	in_fmt.wBitsPerSample=16;
    if(in_fmt.wBitsPerSample==2)
	in_fmt.wBitsPerSample=16;//IMC
    *destfmt=in_fmt;
    if(in_fmt.nChannels==5)//AC3
    	destfmt->nChannels = 2;
    destfmt->wFormatTag=1;//PCM
    destfmt->nAvgBytesPerSec=destfmt->nSamplesPerSec*destfmt->wBitsPerSample*destfmt->nChannels/8;
    destfmt->nBlockAlign=destfmt->nChannels*destfmt->wBitsPerSample/8;
    destfmt->cbSize=0;
    printf("src [wFormatTag=%u, nChannels=%u, nSamplesPerSec=%lu, nAvgBytesPerSec=%lu, nBlockAlign=%u, wBitsPerSample=%u, cbSize=%u]\n", 
	  srcfmt->wFormatTag, srcfmt->nChannels, srcfmt->nSamplesPerSec, srcfmt->nAvgBytesPerSec, 
	  srcfmt->nBlockAlign, srcfmt->wBitsPerSample, srcfmt->cbSize);

    printf("dst [wFormatTag=%u, nChannels=%u, nSamplesPerSec=%lu, nAvgBytesPerSec=%lu, nBlockAlign=%u, wBitsPerSample=%u, cbSize=%u]\n", 
	  destfmt->wFormatTag, destfmt->nChannels, destfmt->nSamplesPerSec, destfmt->nAvgBytesPerSec, 
	  destfmt->nBlockAlign, destfmt->wBitsPerSample, destfmt->cbSize);
    return 0;
}