#include "gsm61dec.h"
#include "xa_gsm_state.h"

MSGSM_Decoder::MSGSM_Decoder(WAVEFORMATEX* wf, void*)
{
    GSM_Init();
    in_fmt=*wf;
}
int MSGSM_Decoder::Convert(unsigned char* in_data, Unsigned in_size,
	     unsigned char* out_data, Unsigned out_size,
	    Unsigned* size_read, Unsigned* size_written)

/*int MSGSM_Decoder::decode_frames(unsigned char* in_data, unsigned char* out_data,
	    unsigned& in_size, unsigned out_size, out_format* format)*/
{
    int num_samples=in_size/65;
    if(out_size<640*num_samples)
	num_samples=out_size/640;
    if(num_samples==0)
    {
	if(size_read)*size_read=0;
	if(size_written)*size_written=0;
	return -1;
    }	
    int ocnt=XA_ADecode_GSMM_PCMxM(num_samples*65, num_samples,
		(char*)in_data, out_data, out_size);
/*    if(format)
    {
	format->is_stereo=0;//mono
	format->freq=local_wf.nSamplesPerSec;//unsure
         //format->freq=44100;
	format->valid=OUT_FORMAT_VALID;
    }		*/
//    if(ocnt<out_size)
//    {
	if(size_read)*size_read=num_samples*65;
	if(size_written)*size_written=ocnt;
	return 0;
/*    }
    else
    {
	if(size_read)*size_read=(ocnt/640)*65;
	if(size_written)*size_written=ocnt-ocnt%640;
    }				*/
}