/* -----------------------------------------------------------------------------
|
Software License for The Fraunhofer FDK AAC Codec Library for Android
|
|
© Copyright 1995 - 2018 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
|
----------------------------------------------------------------------------- */
|
|
/**************************** SBR decoder library ******************************
|
|
Author(s):
|
|
Description:
|
|
*******************************************************************************/
|
|
/*!
|
\file
|
\brief Memory layout
|
*/
|
#ifndef SBR_RAM_H
|
#define SBR_RAM_H
|
|
#include "sbrdecoder.h"
|
|
#include "env_extr.h"
|
#include "sbr_dec.h"
|
|
#define SBRDEC_MAX_CH_PER_ELEMENT (2)
|
|
#define FRAME_OK (0)
|
#define FRAME_ERROR (1)
|
#define FRAME_ERROR_ALLSLOTS (2)
|
|
typedef struct {
|
SBR_CHANNEL *pSbrChannel[SBRDEC_MAX_CH_PER_ELEMENT];
|
TRANSPOSER_SETTINGS
|
transposerSettings; /* Common transport settings for each individual
|
channel of an element */
|
HANDLE_FDK_BITSTREAM hBs;
|
|
MP4_ELEMENT_ID
|
elementID; /* Element ID set during initialization. Can be used for
|
concealment */
|
int nChannels; /* Number of elements output channels (=2 in case of PS) */
|
|
UCHAR frameErrorFlag[(1) + 1]; /* Frame error status (for every slot in the
|
delay line). Will be copied into header at
|
the very beginning of decodeElement()
|
routine. */
|
|
UCHAR useFrameSlot; /* Index which defines which slot will be decoded/filled
|
next (used with additional delay) */
|
UCHAR useHeaderSlot[(1) + 1]; /* Index array that provides the link between
|
header and frame data (important when
|
processing with additional delay). */
|
} SBR_DECODER_ELEMENT;
|
|
struct SBR_DECODER_INSTANCE {
|
SBR_DECODER_ELEMENT *pSbrElement[(8)];
|
SBR_HEADER_DATA sbrHeader[(
|
8)][(1) + 1]; /* Sbr header for each individual channel of an element */
|
|
HANDLE_FDK_QMF_DOMAIN pQmfDomain;
|
|
HANDLE_PS_DEC hParametricStereoDec;
|
|
/* Global parameters */
|
AUDIO_OBJECT_TYPE coreCodec; /* AOT of core codec */
|
int numSbrElements;
|
int numSbrChannels;
|
INT sampleRateIn; /* SBR decoder input sampling rate; might be different than
|
the transposer input sampling rate. */
|
INT sampleRateOut; /* Sampling rate of the SBR decoder output audio samples.
|
*/
|
USHORT codecFrameSize;
|
UCHAR synDownsampleFac;
|
INT downscaleFactor;
|
UCHAR numDelayFrames; /* The current number of additional delay frames used
|
for processing. */
|
UCHAR harmonicSBR;
|
UCHAR
|
numFlushedFrames; /* The variable counts the number of frames which are
|
flushed consecutively. */
|
|
UINT flags;
|
};
|
|
H_ALLOC_MEM(Ram_SbrDecElement, SBR_DECODER_ELEMENT)
|
H_ALLOC_MEM(Ram_SbrDecChannel, SBR_CHANNEL)
|
H_ALLOC_MEM(Ram_SbrDecoder, struct SBR_DECODER_INSTANCE)
|
|
H_ALLOC_MEM(Ram_sbr_QmfStatesSynthesis, FIXP_QSS)
|
H_ALLOC_MEM(Ram_sbr_OverlapBuffer, FIXP_DBL)
|
|
H_ALLOC_MEM(Ram_sbr_HBEOverlapBuffer, FIXP_DBL)
|
|
H_ALLOC_MEM(Ram_ps_dec, PS_DEC)
|
|
#endif /* SBR_RAM_H */
|
