Adding libopus source and Android.mk
Adding libopus source code and Android.mk. The source is based
on latest stable release libopus 1.1.
Change-Id: I0841894ee0766829e6d0e1b8379e6f6f87b0852f
diff --git a/m4/as-gcc-inline-assembly.m4 b/m4/as-gcc-inline-assembly.m4
new file mode 100644
index 0000000..b0d2da4
--- /dev/null
+++ b/m4/as-gcc-inline-assembly.m4
@@ -0,0 +1,98 @@
+dnl as-gcc-inline-assembly.m4 0.1.0
+
+dnl autostars m4 macro for detection of gcc inline assembly
+
+dnl David Schleef <ds@schleef.org>
+
+dnl AS_COMPILER_FLAG(ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED])
+dnl Tries to compile with the given CFLAGS.
+dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags,
+dnl and ACTION-IF-NOT-ACCEPTED otherwise.
+
+AC_DEFUN([AS_GCC_INLINE_ASSEMBLY],
+[
+ AC_MSG_CHECKING([if compiler supports gcc-style inline assembly])
+
+ AC_TRY_COMPILE([], [
+#ifdef __GNUC_MINOR__
+#if (__GNUC__ * 1000 + __GNUC_MINOR__) < 3004
+#error GCC before 3.4 has critical bugs compiling inline assembly
+#endif
+#endif
+__asm__ (""::) ], [flag_ok=yes], [flag_ok=no])
+
+ if test "X$flag_ok" = Xyes ; then
+ $1
+ true
+ else
+ $2
+ true
+ fi
+ AC_MSG_RESULT([$flag_ok])
+])
+
+AC_DEFUN([AS_ASM_ARM_NEON],
+[
+ AC_MSG_CHECKING([if assembler supports NEON instructions on ARM])
+
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("vorr d0,d0,d0")])],
+ [AC_MSG_RESULT([yes])
+ $1],
+ [AC_MSG_RESULT([no])
+ $2])
+])
+
+AC_DEFUN([AS_ASM_ARM_NEON_FORCE],
+[
+ AC_MSG_CHECKING([if assembler supports NEON instructions on ARM])
+
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv7-a\n.fpu neon\n.object_arch armv4t\nvorr d0,d0,d0")])],
+ [AC_MSG_RESULT([yes])
+ $1],
+ [AC_MSG_RESULT([no])
+ $2])
+])
+
+AC_DEFUN([AS_ASM_ARM_MEDIA],
+[
+ AC_MSG_CHECKING([if assembler supports ARMv6 media instructions on ARM])
+
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("shadd8 r3,r3,r3")])],
+ [AC_MSG_RESULT([yes])
+ $1],
+ [AC_MSG_RESULT([no])
+ $2])
+])
+
+AC_DEFUN([AS_ASM_ARM_MEDIA_FORCE],
+[
+ AC_MSG_CHECKING([if assembler supports ARMv6 media instructions on ARM])
+
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv6\n.object_arch armv4t\nshadd8 r3,r3,r3")])],
+ [AC_MSG_RESULT([yes])
+ $1],
+ [AC_MSG_RESULT([no])
+ $2])
+])
+
+AC_DEFUN([AS_ASM_ARM_EDSP],
+[
+ AC_MSG_CHECKING([if assembler supports EDSP instructions on ARM])
+
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("qadd r3,r3,r3")])],
+ [AC_MSG_RESULT([yes])
+ $1],
+ [AC_MSG_RESULT([no])
+ $2])
+])
+
+AC_DEFUN([AS_ASM_ARM_EDSP_FORCE],
+[
+ AC_MSG_CHECKING([if assembler supports EDSP instructions on ARM])
+
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv5te\n.object_arch armv4t\nqadd r3,r3,r3")])],
+ [AC_MSG_RESULT([yes])
+ $1],
+ [AC_MSG_RESULT([no])
+ $2])
+])