updated libfaad

CVS patchset: 3560
CVS date: 2002/12/16 18:59:50

1 files changed, 89 insertions, 0 deletions

diff --git a/src/libfaad/fixed.h b/src/libfaad/fixed.h
new file mode 100644
index 000000000..ae5e5cc4a
--- /dev/null
+++ b/src/libfaad/fixed.h
@@ -0,0 +1,89 @@
+/*
+** FAAD - Freeware Advanced Audio Decoder
+** Copyright (C) 2002 M. Bakker
+**  
+** 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.
+**
+** $Id: fixed.h,v 1.1 2002/12/16 19:00:06 miguelfreitas 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 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
+        shrd eax,edx,REAL_BITS
+    }
+}
+
+/* multiply coef with coef */
+static INLINE MUL_C_C(real_t A, real_t B)
+{
+    _asm {
+        mov eax,A
+        imul B
+        shrd eax,edx,COEF_BITS
+    }
+}
+
+/* multiply real with coef */
+static INLINE MUL_R_C(real_t A, real_t B)
+{
+    _asm {
+        mov eax,A
+        imul B
+        shrd eax,edx,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