1 files changed, 141 insertions, 0 deletions
diff --git a/gst/tta/ttadec.h b/gst/tta/ttadec.h
new file mode 100644
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+++ b/gst/tta/ttadec.h
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+/*
+ * ttadec.h
+ *
+ * Description:	 TTAv1 decoder definitions and prototypes
+ * Developed by: Alexander Djourik <sasha@iszf.irk.ru>
+ *               Pavel Zhilin <pzh@iszf.irk.ru>
+ *
+ * Copyright (c) 1999-2004 Alexander Djourik. All rights reserved.
+ *
+ */
+
+/*
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Please see the file COPYING in this directory for full copyright
+ * information.
+ */
+
+#ifndef TTADEC_H_
+#define TTADEC_H_
+
+#ifdef _WIN32
+#pragma pack(1)
+#define __ATTRIBUTE_PACKED__
+#else
+#define __ATTRIBUTE_PACKED__	__attribute__((packed))
+#endif
+
+#define TTA1_SIGN	0x31415454
+#define FRAME_TIME	1.04489795918367346939
+#define MAX_ORDER	8
+
+#ifndef WAVE_FORMAT_PCM
+#define WAVE_FORMAT_PCM	1
+#endif
+
+#ifdef _WIN32
+	typedef unsigned __int64 uint64;
+#else
+	typedef unsigned long long uint64;
+#endif
+
+/**
+ * moved to gstttadec.c to silence gcc warnings
+ */
+/*
+static const unsigned long bit_mask[] = {
+    0x00000000, 0x00000001, 0x00000003, 0x00000007,
+    0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f,
+    0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff,
+    0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff,
+    0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff,
+    0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff,
+    0x00ffffff, 0x01ffffff, 0x03ffffff, 0x07ffffff,
+    0x0fffffff, 0x1fffffff, 0x3fffffff, 0x7fffffff,
+    0xffffffff
+};
+
+static const unsigned long bit_shift[] = {
+    0x00000001, 0x00000002, 0x00000004, 0x00000008,
+    0x00000010, 0x00000020, 0x00000040, 0x00000080,
+    0x00000100, 0x00000200, 0x00000400, 0x00000800,
+    0x00001000, 0x00002000, 0x00004000, 0x00008000,
+    0x00010000, 0x00020000, 0x00040000, 0x00080000,
+    0x00100000, 0x00200000, 0x00400000, 0x00800000,
+    0x01000000, 0x02000000, 0x04000000, 0x08000000,
+    0x10000000, 0x20000000, 0x40000000, 0x80000000,
+    0x80000000, 0x80000000, 0x80000000, 0x80000000,
+    0x80000000, 0x80000000, 0x80000000, 0x80000000
+};
+
+static const unsigned long *shift_16 = bit_shift + 4;
+*/
+
+typedef unsigned char byte;
+
+#ifdef _BIG_ENDIAN
+#define	ENDSWAP_INT16(x)	(((((x)>>8)&0xFF)|(((x)&0xFF)<<8)))
+#define	ENDSWAP_INT32(x)	(((((x)>>24)&0xFF)|(((x)>>8)&0xFF00)|(((x)&0xFF00)<<8)|(((x)&0xFF)<<24)))
+#define WRITE_BUFFER(x, bsize, out) { \
+	if (bsize > 2) *out++ = (byte)(*x >> 16); \
+	if (bsize > 1) *out++ = (byte)(*x >> 8); \
+	*out++ = (byte) *x; }
+#else
+#define	ENDSWAP_INT16(x)	(x)
+#define	ENDSWAP_INT32(x)	(x)
+#define WRITE_BUFFER(x, bsize, out) { \
+	*out++ = (byte) *x; \
+	if (bsize > 1) *out++ = (byte)(*x >> 8); \
+	if (bsize > 2) *out++ = (byte)(*x >> 16); }
+#endif
+
+#define PREDICTOR1(x, k)	((long)((((uint64)x << k) - x) >> k))
+#define DEC(x)			(((x)&1)?(++(x)>>1):(-(x)>>1))
+
+typedef struct {
+    unsigned long TTAid;
+    unsigned short AudioFormat;
+    unsigned short NumChannels;
+    unsigned short BitsPerSample;
+    unsigned long SampleRate;
+    unsigned long DataLength;
+    unsigned long CRC32;
+} __ATTRIBUTE_PACKED__ tta_hdr;
+
+typedef struct {
+	unsigned long k0;
+	unsigned long k1;
+	unsigned long sum0;
+	unsigned long sum1;
+} adapt;
+
+typedef struct {
+	long shift;
+	long round;
+	long error;
+	long mutex;
+	long qm[MAX_ORDER+1];
+	long dx[MAX_ORDER+1];
+	long dl[MAX_ORDER+1];
+} fltst;
+
+typedef struct {
+	fltst fst;
+	adapt rice;
+	long last;
+} decoder;
+
+#endif /* TTADEC_H_ */