diff options
Diffstat (limited to 'dts2spdif.c')
| -rwxr-xr-x | dts2spdif.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/dts2spdif.c b/dts2spdif.c new file mode 100755 index 0000000..6aa15bb --- /dev/null +++ b/dts2spdif.c @@ -0,0 +1,177 @@ +
+#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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