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-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 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
------------------------------------------------------------------------------------------------------------ */
-
-/***************************** MPEG-4 AAC Decoder **************************
-
- Author(s): Josef Hoepfl
- Description: pulse data tool
-
-******************************************************************************/
-
-#include "pulsedata.h"
-
-
-#include "channelinfo.h"
-
-
-INT CPulseData_Read(
- HANDLE_FDK_BITSTREAM bs,
- CPulseData *const PulseData,
- const SHORT *sfb_startlines,
- const void *pIcsInfo,
- const SHORT frame_length
- )
-{
- int i, k=0;
- const UINT MaxSfBands = GetScaleFactorBandsTransmitted((CIcsInfo*)pIcsInfo);
-
- /* reset pulse data flag */
- PulseData->PulseDataPresent = 0;
-
- if ((PulseData->PulseDataPresent = (UCHAR) FDKreadBit(bs)) != 0) {
- if (!IsLongBlock((CIcsInfo*)pIcsInfo)) {
- return AAC_DEC_DECODE_FRAME_ERROR;
- }
-
- PulseData->NumberPulse = (UCHAR) FDKreadBits(bs,2);
- PulseData->PulseStartBand = (UCHAR) FDKreadBits(bs,6);
-
- if (PulseData->PulseStartBand >= MaxSfBands) {
- return AAC_DEC_DECODE_FRAME_ERROR;
- }
-
- k = sfb_startlines[PulseData->PulseStartBand];
-
- for (i=0; i<=PulseData->NumberPulse; i++) {
- PulseData->PulseOffset[i] = (UCHAR) FDKreadBits(bs,5);
- PulseData->PulseAmp[i] = (UCHAR) FDKreadBits(bs,4);
- k += PulseData->PulseOffset[i];
- }
-
- if (k >= frame_length) {
- return AAC_DEC_DECODE_FRAME_ERROR;
- }
- }
-
-
- return 0;
-}
-
-void CPulseData_Apply(CPulseData *PulseData, /*!< pointer to pulse data side info */
- const short *pScaleFactorBandOffsets, /*!< pointer to scalefactor band offsets */
- FIXP_DBL *coef) /*!< pointer to spectrum */
-{
- int i,k;
-
- if (PulseData->PulseDataPresent)
- {
- k = pScaleFactorBandOffsets[PulseData->PulseStartBand];
-
- for (i=0; i<=PulseData->NumberPulse; i++)
- {
- k += PulseData->PulseOffset[i];
- if (coef [k] > (FIXP_DBL)0) coef[k] += (FIXP_DBL)(int)PulseData->PulseAmp[i];
- else coef[k] -= (FIXP_DBL)(int)PulseData->PulseAmp[i];
- }
- }
-}
-