From 9bf37cc9712506b2483650c82d3c41152337ef7e Mon Sep 17 00:00:00 2001 From: Dave Burke Date: Tue, 17 Apr 2012 09:51:45 -0700 Subject: Fraunhofer AAC codec. License boilerplate update to follow. Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5 --- libFDK/src/mips/fft_rad2_mips.cpp | 72 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 libFDK/src/mips/fft_rad2_mips.cpp (limited to 'libFDK/src/mips/fft_rad2_mips.cpp') 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<