Move FASTDIV macro to intmath.h

Originally committed as revision 21335 to svn://svn.ffmpeg.org/ffmpeg/trunk

4 files changed, 109 insertions, 38 deletions

diff --git a/libavutil/arm/intmath.h b/libavutil/arm/intmath.h
new file mode 100644
index 0000000000..21aef2a478
--- /dev/null
+++ b/libavutil/arm/intmath.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_ARM_INTMATH_H
+#define AVUTIL_ARM_INTMATH_H
+
+#include "config.h"
+#include "libavutil/common.h"
+
+#if HAVE_INLINE_ASM
+
+#if HAVE_ARMV6
+static inline av_const int FASTDIV(int a, int b)
+{
+    int r, t;
+    __asm__ volatile("cmp     %3, #2               \n\t"
+                     "ldr     %1, [%4, %3, lsl #2] \n\t"
+                     "lsrle   %0, %2, #1           \n\t"
+                     "smmulgt %0, %1, %2           \n\t"
+                     : "=&r"(r), "=&r"(t) : "r"(a), "r"(b), "r"(ff_inverse));
+    return r;
+}
+#else
+static inline av_const int FASTDIV(int a, int b)
+{
+    int r, t;
+    __asm__ volatile("umull %1, %0, %2, %3"
+                     : "=&r"(r), "=&r"(t) : "r"(a), "r"(ff_inverse[b]));
+    return r;
+}
+#endif
+
+#define FASTDIV FASTDIV
+
+#endif /* HAVE_INLINE_ASM */
+
+#endif /* AVUTIL_ARM_INTMATH_H */
diff --git a/libavutil/internal.h b/libavutil/internal.h
index 1d21ae4d7a..ac7f1523e6 100644
--- a/libavutil/internal.h
+++ b/libavutil/internal.h
@@ -120,44 +120,6 @@
 
 /* math */
 
-extern const uint32_t ff_inverse[257];
-
-#if ARCH_X86
-#    define FASTDIV(a,b) \
-    ({\
-        int ret, dmy;\
-        __asm__ volatile(\
-            "mull %3"\
-            :"=d"(ret), "=a"(dmy)\
-            :"1"(a), "g"(ff_inverse[b])\
-            );\
-        ret;\
-    })
-#elif HAVE_ARMV6 && HAVE_INLINE_ASM
-static inline av_const int FASTDIV(int a, int b)
-{
-    int r, t;
-    __asm__ volatile("cmp     %3, #2               \n\t"
-                     "ldr     %1, [%4, %3, lsl #2] \n\t"
-                     "lsrle   %0, %2, #1           \n\t"
-                     "smmulgt %0, %1, %2           \n\t"
-                     : "=&r"(r), "=&r"(t) : "r"(a), "r"(b), "r"(ff_inverse));
-    return r;
-}
-#elif ARCH_ARM && HAVE_INLINE_ASM
-static inline av_const int FASTDIV(int a, int b)
-{
-    int r, t;
-    __asm__ volatile("umull %1, %0, %2, %3"
-                     : "=&r"(r), "=&r"(t) : "r"(a), "r"(ff_inverse[b]));
-    return r;
-}
-#elif CONFIG_FASTDIV
-#    define FASTDIV(a,b)   ((uint32_t)((((uint64_t)a) * ff_inverse[b]) >> 32))
-#else
-#    define FASTDIV(a,b)   ((a) / (b))
-#endif
-
 extern const uint8_t ff_sqrt_tab[256];
 
 static inline av_const unsigned int ff_sqrt(unsigned int a)
diff --git a/libavutil/intmath.h b/libavutil/intmath.h
index 39e14c28ae..7aff78ceb1 100644
--- a/libavutil/intmath.h
+++ b/libavutil/intmath.h
@@ -24,6 +24,14 @@
 #include "config.h"
 #include "common.h"
 
+extern const uint32_t ff_inverse[257];
+
+#if   ARCH_ARM
+#   include "arm/intmath.h"
+#elif ARCH_X86
+#   include "x86/intmath.h"
+#endif
+
 #if HAVE_FAST_CLZ && AV_GCC_VERSION_AT_LEAST(3,4)
 
 #ifndef av_log2
@@ -38,4 +46,14 @@
 
 #endif /* AV_GCC_VERSION_AT_LEAST(3,4) */
 
+#ifndef FASTDIV
+
+#if CONFIG_FASTDIV
+#    define FASTDIV(a,b)   ((uint32_t)((((uint64_t)a) * ff_inverse[b]) >> 32))
+#else
+#    define FASTDIV(a,b)   ((a) / (b))
+#endif
+
+#endif /* FASTDIV */
+
 #endif /* AVUTIL_INTMATH_H */
diff --git a/libavutil/x86/intmath.h b/libavutil/x86/intmath.h
new file mode 100644
index 0000000000..7528c55dc8
--- /dev/null
+++ b/libavutil/x86/intmath.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_X86_INTMATH_H
+#define AVUTIL_X86_INTMATH_H
+
+#include "libavutil/common.h"
+
+#define FASTDIV(a,b) \
+    ({\
+        int ret, dmy;\
+        __asm__ volatile(\
+            "mull %3"\
+            :"=d"(ret), "=a"(dmy)\
+            :"1"(a), "g"(ff_inverse[b])\
+            );\
+        ret;\
+    })
+
+#endif /* AVUTIL_X86_INTMATH_H */