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#include <stdio.h>
//#include <stdlib.h>
//#include <string.h>
#include <memory.h>
struct WAVEHEADER {
unsigned long ChunkID;
unsigned long ChunkSize;
unsigned long Format;
unsigned long SubChunk1ID;
unsigned long SubChunk1Size;
unsigned short AudioFormat;
unsigned short NumChannels;
unsigned long SampleRate;
unsigned long ByteRate;
unsigned short BlockAlign;
unsigned short BitsPerSample;
unsigned long SubChunk2ID;
unsigned long SubChunk2Size;
};
unsigned char burst[6144];
FILE *infile, *outfile;
unsigned long bytesread;
unsigned long pcmbytes;
unsigned long pcmbytesmultiplier;
char sampleratecode;
unsigned long framesize;
struct WAVEHEADER wavhdr = { 0x46464952,
0,
0x45564157,
0x20746D66,
16,
1,
2,
0,
0,
4,
16,
0x61746164,
0 };
unsigned long i;
char temp;
int main( int argc, char *argv[ ], char *envp[ ] )
{
if (argc < 3)
{
printf("Wrong syntax. dts2spdif <In.dts> <Out.wav>.\n");
return 0;
}
infile = fopen(argv[1], "rb");
outfile = fopen(argv[2], "wb");
//fseek(outfile, SEEK_SET, 44);
fwrite (&wavhdr, sizeof(struct WAVEHEADER), 1, outfile);
for(;;)
{
memset (burst, 0, 6144);
bytesread = fread(burst, 1, 9, infile);
if (bytesread < 9)
{
printf ("EOF reached (Frame Header reading)!\nCurrent position in INFILE: %i\n", ftell(infile));
break;
}
if (((unsigned long*)burst)[0] != 0x0180fe7f)
{
printf("ERROR: INVALID SYNCWORD !\nCurrent position in INFILE: %i\n", ftell(infile));
break;
}
framesize = (burst[5] & 3);
framesize = framesize * 4096;
framesize = framesize + (burst[6] * 16);
framesize = framesize + ((burst[7] & 240) / 16);
framesize = framesize + 1;
sampleratecode = ((burst[8] & 60) / 4);
if (wavhdr.SampleRate == 0)
{
printf ("First Sampleratecode: %i\n", sampleratecode);
switch (sampleratecode)
{
case 1:
pcmbytesmultiplier = 4;
case 2:
pcmbytesmultiplier = 2;
case 3:
pcmbytesmultiplier = 1;
wavhdr.SampleRate = 32000;
wavhdr.ByteRate = 128000;
break;
case 6:
pcmbytesmultiplier = 4;
case 7:
pcmbytesmultiplier = 2;
case 8:
pcmbytesmultiplier = 1;
wavhdr.SampleRate = 44100;
wavhdr.ByteRate = 176000;
break;
case 11:
pcmbytesmultiplier = 4;
case 12:
pcmbytesmultiplier = 2;
case 13:
pcmbytesmultiplier = 1;
wavhdr.SampleRate = 48000;
wavhdr.ByteRate = 192000;
break;
default:
wavhdr.SampleRate = 0;
wavhdr.ByteRate = 0;
printf ("Invalid Sampleratecode ! Aborting process...\n");
break;
}
}
pcmbytes = (burst[4] & 1);
pcmbytes = pcmbytes * 64;
pcmbytes = pcmbytes + ((burst[5] & 252) / 4);
pcmbytes = pcmbytes + 1;
pcmbytes = pcmbytes * 128;
pcmbytes = pcmbytes * pcmbytesmultiplier;
bytesread = fread (&burst[9], 1, framesize - 9, infile);
if ((bytesread + 9) < framesize)
{
printf ("EOF reached (Burst Reading)!\nCurrent position in INFILE: %i\n", ftell(infile));
printf ("Frame size: %i .. Bytes read: %i\n", framesize, bytesread);
break;
}
for (i = 0; i < framesize; i += 2)
{
temp = burst[i];
burst[i] = burst[i + 1];
burst[i + 1] = temp;
}
fwrite (burst, 1, framesize, outfile);
if (pcmbytes > framesize)
{
fwrite ("", 1, pcmbytes - framesize, outfile);
}
else
{
printf("Warning: Frame Size > LPCM Frame Size! Buffer underrun may occur/File damaged?\n");
printf("Frame start at INFILE Offset: %i\n", ftell(infile) - framesize);
}
}
printf ("Last Sampleratecode: %i\n", sampleratecode);
wavhdr.SubChunk2Size = (ftell(outfile) - 44);
wavhdr.ChunkSize = wavhdr.SubChunk2Size + 36;
fseek (outfile, SEEK_SET, 0);
fwrite (&wavhdr, sizeof(struct WAVEHEADER), 1, outfile);
fclose (infile);
fclose (outfile);
return 0;
}
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