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+
+/* -----------------------------------------------------------------------------------------------------------
+Software License for The Fraunhofer FDK AAC Codec Library for Android
+
+© Copyright 1995 - 2012 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+ All rights reserved.
+
+ 1. INTRODUCTION
+The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
+the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
+This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
+
+AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
+audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
+independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
+of the MPEG specifications.
+
+Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
+may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
+individually for the purpose of encoding or decoding bit streams in products that are compliant with
+the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
+these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
+software may already be covered under those patent licenses when it is used for those licensed purposes only.
+
+Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
+are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
+applications information and documentation.
+
+2. COPYRIGHT LICENSE
+
+Redistribution and use in source and binary forms, with or without modification, are permitted without
+payment of copyright license fees provided that you satisfy the following conditions:
+
+You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
+your modifications thereto in source code form.
+
+You must retain the complete text of this software license in the documentation and/or other materials
+provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
+You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
+modifications thereto to recipients of copies in binary form.
+
+The name of Fraunhofer may not be used to endorse or promote products derived from this library without
+prior written permission.
+
+You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
+software or your modifications thereto.
+
+Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
+and the date of any change. For modified versions of the FDK AAC Codec, the term
+"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
+"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
+
+3. NO PATENT LICENSE
+
+NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
+ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
+respect to this software.
+
+You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
+by appropriate patent licenses.
+
+4. DISCLAIMER
+
+This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
+"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
+of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
+including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
+or business interruption, however caused and on any theory of liability, whether in contract, strict
+liability, or tort (including negligence), arising in any way out of the use of this software, even if
+advised of the possibility of such damage.
+
+5. CONTACT INFORMATION
+
+Fraunhofer Institute for Integrated Circuits IIS
+Attention: Audio and Multimedia Departments - FDK AAC LL
+Am Wolfsmantel 33
+91058 Erlangen, Germany
+
+www.iis.fraunhofer.de/amm
+amm-info@iis.fraunhofer.de
+----------------------------------------------------------------------------------------------------------- */
+
+/*************************** Fraunhofer IIS FDK Tools **********************
+
+ Author(s):
+ Description: fixed point intrinsics
+
+******************************************************************************/
+
+#if defined(__arm__) && defined(__GNUC__) /* cppp replaced: elif */
+
+#if defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_6__)
+ #define FUNCTION_cplxMultDiv2_32x16
+ #define FUNCTION_cplxMultDiv2_32x16X2
+ //#define FUNCTION_cplxMult_32x16
+ //#define FUNCTION_cplxMult_32x16X2
+#endif
+
+#define FUNCTION_cplxMultDiv2_32x32X2
+//#define FUNCTION_cplxMult_32x32X2
+
+#ifdef FUNCTION_cplxMultDiv2_32x16
+inline void cplxMultDiv2( FIXP_DBL *c_Re,
+ FIXP_DBL *c_Im,
+ const FIXP_DBL a_Re,
+ const FIXP_DBL a_Im,
+ const FIXP_SPK wpk )
+{
+ LONG tmp1,tmp2;
+ const LONG w = wpk.w;
+
+ asm("smulwt %0, %3, %4;\n"
+ "rsb %1,%0,#0;\n"
+ "smlawb %0, %2, %4, %1;\n"
+ "smulwt %1, %2, %4;\n"
+ "smlawb %1, %3, %4, %1;\n"
+ : "=&r"(tmp1), "=&r"(tmp2)
+ : "r"(a_Re), "r"(a_Im), "r"(w)
+ );
+
+ *c_Re = tmp1;
+ *c_Im = tmp2;
+}
+#endif /* FUNCTION_cplxMultDiv2_32x16 */
+
+#ifdef FUNCTION_cplxMultDiv2_32x16X2
+inline void cplxMultDiv2( FIXP_DBL *c_Re,
+ FIXP_DBL *c_Im,
+ const FIXP_DBL a_Re,
+ const FIXP_DBL a_Im,
+ const FIXP_SGL b_Re,
+ const FIXP_SGL b_Im)
+{
+ LONG tmp1, tmp2;
+
+ asm("smulwb %0, %3, %5;\n" /* %7 = -a_Im * b_Im */
+ "rsb %1,%0,#0;\n"
+ "smlawb %0, %2, %4, %1;\n" /* tmp1 = a_Re * b_Re - a_Im * b_Im */
+ "smulwb %1, %2, %5;\n" /* %7 = a_Re * b_Im */
+ "smlawb %1, %3, %4, %1;\n" /* tmp2 = a_Im * b_Re + a_Re * b_Im */
+ : "=&r"(tmp1), "=&r"(tmp2)
+ : "r"(a_Re), "r"(a_Im), "r"(b_Re), "r"(b_Im)
+ );
+
+ *c_Re = tmp1;
+ *c_Im = tmp2;
+}
+#endif /* FUNCTION_cplxMultDiv2_32x16X2 */
+
+#ifdef FUNCTION_cplxMultAddDiv2_32x16X2
+inline void cplxMultAddDiv2( FIXP_DBL *c_Re,
+ FIXP_DBL *c_Im,
+ const FIXP_DBL a_Re,
+ const FIXP_DBL a_Im,
+ const FIXP_SGL b_Re,
+ const FIXP_SGL b_Im)
+{
+ LONG tmp1, tmp2;
+
+ asm("smulwb %0, %3, %5;\n"
+ "rsb %1,%0,#0;\n"
+ "smlawb %0, %2, %4, %1;\n"
+ "smulwb %1, %2, %5;\n"
+ "smlawb %1, %3, %4, %1;\n"
+ : "=&r"(tmp1), "=&r"(tmp2)
+ : "r"(a_Re), "r"(a_Im), "r"(b_Re), "r"(b_Im)
+ );
+
+ *c_Re += tmp1;
+ *c_Im += tmp2;
+}
+#endif /* FUNCTION_cplxMultAddDiv2_32x16X2 */
+
+
+#ifdef FUNCTION_cplxMultDiv2_32x32X2
+inline void cplxMultDiv2( FIXP_DBL *c_Re,
+ FIXP_DBL *c_Im,
+ const FIXP_DBL a_Re,
+ const FIXP_DBL a_Im,
+ const FIXP_DBL b_Re,
+ const FIXP_DBL b_Im)
+{
+ LONG tmp1, tmp2;
+
+#ifdef __ARM_ARCH_6__
+ asm(
+ "smmul %0, %2, %4;\n" /* tmp1 = a_Re * b_Re */
+ "smmls %0, %3, %5, %0;\n" /* tmp1 -= a_Im * b_Im */
+ "smmul %1, %2, %5;\n" /* tmp2 = a_Re * b_Im */
+ "smmla %1, %3, %4, %1;\n" /* tmp2 += a_Im * b_Re */
+ : "=&r"(tmp1), "=&r"(tmp2)
+ : "r"(a_Re), "r"(a_Im), "r"(b_Re), "r"(b_Im)
+ : "r0"
+ );
+#else
+ LONG discard;
+ asm(
+ "smull %2, %0, %7, %6;\n" /* tmp1 = -a_Im * b_Im */
+ "smlal %2, %0, %3, %5;\n" /* tmp1 += a_Re * b_Re */
+ "smull %2, %1, %3, %6;\n" /* tmp2 = a_Re * b_Im */
+ "smlal %2, %1, %4, %5;\n" /* tmp2 += a_Im * b_Re */
+ : "=&r"(tmp1), "=&r"(tmp2), "=&r"(discard)
+ : "r"(a_Re), "r"(a_Im), "r"(b_Re), "r"(b_Im), "r"(-a_Im)
+ );
+ #endif
+ *c_Re = tmp1;
+ *c_Im = tmp2;
+}
+#endif /* FUNCTION_cplxMultDiv2_32x32X2 */
+
+
+#endif
+
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