From d2bb4247717d2cc89a8428cae6ae77067d86129d Mon Sep 17 00:00:00 2001
From: norly <ny-git@enpas.org>
Date: Sat, 29 Oct 2011 18:59:57 +0100
Subject: Initial commit.

Basically the old code from 2006/07, slightly
modified to compile on modern GCC/Linux.
Changed the tool names.
---
 dts2spdif.c | 177 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 177 insertions(+)
 create mode 100755 dts2spdif.c

(limited to 'dts2spdif.c')

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;
+}
-- 
cgit v1.2.3