summaryrefslogtreecommitdiffstats
path: root/libAACdec/src/rvlc_info.h
diff options
context:
space:
mode:
authorThe Android Open Source Project <initial-contribution@android.com>2012-07-11 10:15:24 -0700
committerThe Android Open Source Project <initial-contribution@android.com>2012-07-11 10:15:24 -0700
commit2228e360595641dd906bf1773307f43d304f5b2e (patch)
tree57f3d390ebb0782cc0de0fb984c8ea7e45b4f386 /libAACdec/src/rvlc_info.h
downloadODR-AudioEnc-2228e360595641dd906bf1773307f43d304f5b2e.tar.gz
ODR-AudioEnc-2228e360595641dd906bf1773307f43d304f5b2e.tar.bz2
ODR-AudioEnc-2228e360595641dd906bf1773307f43d304f5b2e.zip
Snapshot 2bda038c163298531d47394bc2c09e1409c5d0db
Change-Id: If584e579464f28b97d50e51fc76ba654a5536c54
Diffstat (limited to 'libAACdec/src/rvlc_info.h')
-rw-r--r--libAACdec/src/rvlc_info.h176
1 files changed, 176 insertions, 0 deletions
diff --git a/libAACdec/src/rvlc_info.h b/libAACdec/src/rvlc_info.h
new file mode 100644
index 0000000..e245090
--- /dev/null
+++ b/libAACdec/src/rvlc_info.h
@@ -0,0 +1,176 @@
+
+/* -----------------------------------------------------------------------------------------------------------
+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
+----------------------------------------------------------------------------------------------------------- */
+
+/*!
+ \file
+ \brief Defines structures for RVLC
+ \author Robert Weidner
+*/
+#ifndef RVLC_INFO_H
+#define RVLC_INFO_H
+
+
+
+#define FWD 0 /* bitstream decoding direction forward (RVL coded part) */
+#define BWD 1 /* bitstream decoding direction backward (RVL coded part) */
+
+#define MAX_RVL 7 /* positive RVLC escape */
+#define MIN_RVL -7 /* negative RVLC escape */
+#define MAX_ALLOWED_DPCM_INDEX 14 /* the maximum allowed index of a decoded dpcm value (offset 'TABLE_OFFSET' incl --> must be subtracted) */
+#define TABLE_OFFSET 7 /* dpcm offset of valid output values of rvl table decoding, the rvl table ouly returns positive values, therefore the offset */
+#define MAX_LEN_RVLC_CODE_WORD 9 /* max length of a RVL codeword in bits */
+#define MAX_LEN_RVLC_ESCAPE_WORD 20 /* max length of huffman coded RVLC escape word in bits */
+
+#define DPCM_NOISE_NRG_BITS 9
+#define SF_OFFSET 100 /* offset for correcting scf value */
+
+#define CONCEAL_MAX_INIT 1311 /* arbitrary value */
+#define CONCEAL_MIN_INIT -1311 /* arbitrary value */
+
+#define RVLC_MAX_SFB ((8) * (16))
+
+/* sideinfo of RVLC */
+typedef struct
+{
+ /* ------- ESC 1 Data: --------- */ /* order of RVLC-bitstream components in bitstream (RVLC-initialization), every component appears only once in bitstream */
+ INT sf_concealment; /* 1 */
+ INT rev_global_gain; /* 2 */
+ SHORT length_of_rvlc_sf; /* 3 */ /* original value, gets modified (subtract 9) in case of noise (PNS); is kept for later use */
+ INT dpcm_noise_nrg; /* 4 optional */
+ INT sf_escapes_present; /* 5 */
+ SHORT length_of_rvlc_escapes; /* 6 optional */
+ INT dpcm_noise_last_position; /* 7 optional */
+
+ INT dpcm_is_last_position;
+
+ SHORT length_of_rvlc_sf_fwd; /* length_of_rvlc_sf used for forward decoding */
+ SHORT length_of_rvlc_sf_bwd; /* length_of_rvlc_sf used for backward decoding */
+
+ /* for RVL-Codeword decoder to distinguish between fwd and bwd decoding */
+ SHORT *pRvlBitCnt_RVL;
+ USHORT *pBitstrIndxRvl_RVL;
+
+ UCHAR numWindowGroups;
+ UCHAR maxSfbTransmitted;
+ UCHAR first_noise_group;
+ UCHAR first_noise_band;
+ UCHAR direction;
+
+ /* bitstream indices */
+ USHORT bitstreamIndexRvlFwd; /* base address of RVL-coded-scalefactor data (ESC 2) for forward decoding */
+ USHORT bitstreamIndexRvlBwd; /* base address of RVL-coded-scalefactor data (ESC 2) for backward decoding */
+ USHORT bitstreamIndexEsc; /* base address where RVLC-escapes start (ESC 2) */
+
+ /* decoding trees */
+ const UINT *pHuffTreeRvlCodewds;
+ const UINT *pHuffTreeRvlcEscape;
+
+ /* escape counters */
+ UCHAR numDecodedEscapeWordsFwd; /* when decoding RVL-codes forward */
+ UCHAR numDecodedEscapeWordsBwd; /* when decoding RVL-codes backward */
+ UCHAR numDecodedEscapeWordsEsc; /* when decoding the escape-Words */
+
+ SCHAR noise_used;
+ SCHAR intensity_used;
+ SCHAR sf_used;
+
+ SHORT firstScf;
+ SHORT lastScf;
+ SHORT firstNrg;
+ SHORT lastNrg;
+ SHORT firstIs;
+ SHORT lastIs;
+
+ /* ------ RVLC error detection ------ */
+ UINT errorLogRvlc; /* store RVLC errors */
+ SHORT conceal_min; /* is set at backward decoding */
+ SHORT conceal_max; /* is set at forward decoding */
+ SHORT conceal_min_esc; /* is set at backward decoding */
+ SHORT conceal_max_esc; /* is set at forward decoding */
+} CErRvlcInfo;
+
+typedef CErRvlcInfo RVLC_INFO; /* temp */
+
+
+
+#endif /* RVLC_INFO_H */