1 files changed, 108 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/mp3dec/src/pvmp3_normalize.h b/media/libstagefright/codecs/mp3dec/src/pvmp3_normalize.h
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index 0000000..5471771
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+++ b/media/libstagefright/codecs/mp3dec/src/pvmp3_normalize.h
@@ -0,0 +1,108 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/*
+------------------------------------------------------------------------------
+   PacketVideo Corp.
+   MP3 Decoder Library
+
+   Filename: pvmp3_normalize.h
+
+   Date: 10/02/2007
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description:
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+------------------------------------------------------------------------------
+*/
+
+#ifndef PVMP3_NORMALIZE_H
+#define PVMP3_NORMALIZE_H
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+
+#include "pvmp3_audio_type_defs.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL VARIABLES REFERENCES
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; DEFINES AND SIMPLE TYPEDEF'S
+----------------------------------------------------------------------------*/
+
+#if (defined(PV_ARM_V5)||defined(PV_ARM_V4))
+
+__inline int32 pvmp3_normalize(int32 x)
+{
+    int32 y;
+    __asm
+    {
+        clz y, x;
+        sub y, y, #1
+    }
+    return (y);
+}
+
+
+#elif (defined(PV_ARM_GCC_V5)||defined(PV_ARM_GCC_V4))
+
+__inline int32 pvmp3_normalize(int32 x)
+{
+    register int32 y;
+    register int32 ra = x;
+
+
+    asm volatile(
+        "clz %0, %1\n\t"
+        "sub %0, %0, #1"
+    : "=&r*i"(y)
+                : "r"(ra));
+    return (y);
+
+}
+
+#else
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+    int32 pvmp3_normalize(int32 x);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+
+
+#endif  /* PV_NORMALIZE_H */