Fraunhofer AAC codec.

License boilerplate update to follow.

Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5

1 files changed, 72 insertions, 0 deletions

diff --git a/libFDK/src/mips/fft_rad2_mips.cpp b/libFDK/src/mips/fft_rad2_mips.cpp
new file mode 100644
index 0000000..2d40521
--- /dev/null
+++ b/libFDK/src/mips/fft_rad2_mips.cpp
@@ -0,0 +1,72 @@
+/***************************  Fraunhofer IIS FDK Tools  **********************
+
+                        (C) Copyright Fraunhofer IIS (2007)
+                               All Rights Reserved
+
+    Please be advised that this software and/or program delivery is
+    Confidential Information of Fraunhofer and subject to and covered by the
+
+    Fraunhofer IIS Software Evaluation Agreement
+    between Google Inc. and  Fraunhofer
+    effective and in full force since March 1, 2012.
+
+    You may use this software and/or program only under the terms and
+    conditions described in the above mentioned Fraunhofer IIS Software
+    Evaluation Agreement. Any other and/or further use requires a separate agreement.
+
+
+   $Id$
+   Author(s):
+   Description: dit_fft MIPS assembler replacements.
+
+   This software and/or program is protected by copyright law and international
+   treaties. Any reproduction or distribution of this software and/or program,
+   or any portion of it, may result in severe civil and criminal penalties, and
+   will be prosecuted to the maximum extent possible under law.
+
+******************************************************************************/
+
+#if defined(MIPS_DSP_LIB)
+
+#include "dsplib_util.h"
+#include "dsplib_dsp.h"
+
+#define FUNCTION_dit_fft
+
+#ifdef FUNCTION_dit_fft
+
+#include "mips_fft_twiddles.cpp"
+
+void dit_fft(FIXP_DBL *x, const INT ldn, const FIXP_STP *trigdata, const INT trigDataSize)
+{
+    int i;
+
+    int32c *din = (int32c*)x;
+    int32c *dout = (int32c*)x;
+
+    int32c scratch[1024];
+    int32c *twiddles;
+
+    switch (ldn) {
+            case 4:  twiddles = (int32c*)__twiddles_mips_fft32_16;   break;
+            case 5:  twiddles = (int32c*)__twiddles_mips_fft32_32;   break;
+            case 6:  twiddles = (int32c*)__twiddles_mips_fft32_64;   break;
+            case 7:  twiddles = (int32c*)__twiddles_mips_fft32_128;  break;
+            case 8:  twiddles = (int32c*)__twiddles_mips_fft32_256;  break;
+            case 9:  twiddles = (int32c*)__twiddles_mips_fft32_512;  break;
+            case 10: twiddles = (int32c*)__twiddles_mips_fft32_1024; break;
+            //case 11: twiddles = (int32c*)__twiddles_mips_fft32_2048; break;
+            default: FDK_ASSERT(0); break;
+    }
+
+    mips_fft32(dout, din, twiddles, scratch, ldn);
+
+    for(i=0;i<(1<<ldn);i++) {
+        x[2*i]   = dout[i].re<<1;
+        x[2*i+1] = dout[i].im<<1;
+    }
+}
+#endif
+
+
+#endif /* defined(MIPS_DSP_LIB) */