libfaad2 v2.0rc1 imported

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@10726 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 145 insertions, 0 deletions

diff --git a/libfaad2/fixed.h b/libfaad2/fixed.h
new file mode 100644
index 0000000000..0c0c4d8c09
--- /dev/null
+++ b/libfaad2/fixed.h
@@ -0,0 +1,145 @@
+/*
+** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
+** Copyright (C) 2003 M. Bakker, Ahead Software AG, http://www.nero.com
+**  
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+** 
+** This program 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 General Public License for more details.
+** 
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software 
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** Any non-GPL usage of this software or parts of this software is strictly
+** forbidden.
+**
+** Commercial non-GPL licensing of this software is possible.
+** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
+**
+** $Id: fixed.h,v 1.9 2003/07/29 08:20:12 menno Exp $
+**/
+
+#ifndef __FIXED_H__
+#define __FIXED_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#define COEF_BITS 28
+#define COEF_PRECISION (1 << COEF_BITS)
+#define REAL_BITS 15 //7
+#define REAL_PRECISION (1 << REAL_BITS)
+
+
+typedef int32_t real_t;
+
+
+#define REAL_CONST(A) ((real_t)(A*(REAL_PRECISION)))
+#define COEF_CONST(A) ((real_t)(A*(COEF_PRECISION)))
+
+#if defined(_WIN32) && !defined(_WIN32_WCE)
+
+/* multiply real with real */
+static INLINE MUL(real_t A, real_t B)
+{
+    _asm {
+        mov eax,A
+        imul B
+#if 0
+        shrd eax,edx,REAL_BITS
+#else
+        shr eax,REAL_BITS
+        shl edx,(32-REAL_BITS)
+        or eax,edx
+#endif
+    }
+}
+
+/* multiply coef with coef */
+static INLINE MUL_C_C(real_t A, real_t B)
+{
+    _asm {
+        mov eax,A
+        imul B
+#if 0
+        shrd eax,edx,COEF_BITS
+#else
+        shr eax,COEF_BITS
+        shl edx,(32-COEF_BITS)
+        or eax,edx
+#endif
+    }
+}
+
+/* multiply real with coef */
+static INLINE MUL_R_C(real_t A, real_t B)
+{
+    _asm {
+        mov eax,A
+        imul B
+#if 0
+        shrd eax,edx,COEF_BITS
+#else
+        shr eax,COEF_BITS
+        shl edx,(32-COEF_BITS)
+        or eax,edx
+#endif
+    }
+}
+
+#elif defined(__GNUC__) && defined (__arm__)
+
+/* taken from MAD */
+#define arm_mul(x, y, SCALEBITS) \
+       ({      uint32_t __hi; \
+               uint32_t __lo; \
+               uint32_t __result; \
+               asm ("smull  %0, %1, %3, %4\n\t" \
+                    "movs   %0, %0, lsr %5\n\t" \
+                    "adc    %2, %0, %1, lsl %6" \
+                    : "=&r" (__lo), "=&r" (__hi), "=r" (__result) \
+                    : "%r" (x), "r" (y), \
+                      "M" (SCALEBITS), "M" (32 - (SCALEBITS)) \
+                    : "cc"); \
+               __result; \
+       })
+
+static INLINE real_t MUL(real_t A, real_t B)
+{
+       return arm_mul( A, B, REAL_BITS);
+}
+
+static INLINE real_t MUL_C_C(real_t A, real_t B)
+{
+       return arm_mul( A, B, COEF_BITS);
+}
+
+static INLINE real_t MUL_R_C(real_t A, real_t B)
+{
+       return arm_mul( A, B, COEF_BITS);
+}
+
+#else
+
+  /* multiply real with real */
+  #define MUL(A,B) (real_t)(((int64_t)(A)*(int64_t)(B)+(1 << (REAL_BITS-1))) >> REAL_BITS)
+  /* multiply coef with coef */
+  #define MUL_C_C(A,B) (real_t)(((int64_t)(A)*(int64_t)(B)+(1 << (COEF_BITS-1))) >> COEF_BITS)
+  /* multiply real with coef */
+  #define MUL_R_C(A,B) (real_t)(((int64_t)(A)*(int64_t)(B)+(1 << (COEF_BITS-1))) >> COEF_BITS)
+
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif