summaryrefslogtreecommitdiffstats
path: root/libSBRenc/src/sbr_def.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 /libSBRenc/src/sbr_def.h
downloadODR-AudioEnc-2228e360595641dd906bf1773307f43d304f5b2e.tar.gz
ODR-AudioEnc-2228e360595641dd906bf1773307f43d304f5b2e.tar.bz2
ODR-AudioEnc-2228e360595641dd906bf1773307f43d304f5b2e.zip
Snapshot 2bda038c163298531d47394bc2c09e1409c5d0db
Change-Id: If584e579464f28b97d50e51fc76ba654a5536c54
Diffstat (limited to 'libSBRenc/src/sbr_def.h')
-rw-r--r--libSBRenc/src/sbr_def.h286
1 files changed, 286 insertions, 0 deletions
diff --git a/libSBRenc/src/sbr_def.h b/libSBRenc/src/sbr_def.h
new file mode 100644
index 0000000..1d99f7f
--- /dev/null
+++ b/libSBRenc/src/sbr_def.h
@@ -0,0 +1,286 @@
+
+/* -----------------------------------------------------------------------------------------------------------
+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 SBR main definitions
+*/
+#ifndef __SBR_DEF_H
+#define __SBR_DEF_H
+
+#include "common_fix.h"
+
+#define noError 0
+#define HANDLE_ERROR_INFO INT
+#define ERROR(a,b) 1
+#define handBack
+
+/* #define SBR_ENV_STATISTICS_BITRATE */
+#undef SBR_ENV_STATISTICS_BITRATE
+
+/* #define SBR_ENV_STATISTICS */
+#undef SBR_ENV_STATISTICS
+
+/* #define SBR_PAYLOAD_MONITOR */
+#undef SBR_PAYLOAD_MONITOR
+
+#define SWAP(a,b) tempr=a, a=b, b=tempr
+#define TRUE 1
+#define FALSE 0
+
+
+/* Constants */
+#define EPS 1e-12
+#define LOG2 0.69314718056f /* natural logarithm of 2 */
+#define ILOG2 1.442695041f /* 1/LOG2 */
+#define RELAXATION_FLOAT (1e-6f)
+#define RELAXATION (FL2FXCONST_DBL(RELAXATION_FLOAT))
+#define RELAXATION_FRACT (FL2FXCONST_DBL(0.524288f)) /* 0.524288f is fractional part of RELAXATION */
+#define RELAXATION_SHIFT (19)
+#define RELAXATION_LD64 (FL2FXCONST_DBL(0.31143075889f))/* (ld64(RELAXATION) */
+
+/************ Definitions ***************/
+#define SBR_COMP_MODE_DELTA 0
+#define SBR_COMP_MODE_CTS 1
+
+#define MAX_NUM_CHANNELS 2
+
+#define MAX_NOISE_ENVELOPES 2
+#define MAX_NUM_NOISE_COEFFS 5
+#define MAX_NUM_NOISE_VALUES (MAX_NUM_NOISE_COEFFS*MAX_NOISE_ENVELOPES)
+
+#define MAX_NUM_ENVELOPE_VALUES (MAX_ENVELOPES * MAX_FREQ_COEFFS)
+#define MAX_ENVELOPES 5
+#define MAX_FREQ_COEFFS 48
+
+#define MAX_FREQ_COEFFS_FS44100 35
+#define MAX_FREQ_COEFFS_FS48000 32
+
+
+#define QMF_CHANNELS 64
+#define QMF_FILTER_LENGTH 640
+#define QMF_MAX_TIME_SLOTS 32
+#define NO_OF_ESTIMATES_LC 4
+#define NO_OF_ESTIMATES_LD 3
+#define MAX_NO_OF_ESTIMATES 4
+
+
+#define NOISE_FLOOR_OFFSET 6
+#define NOISE_FLOOR_OFFSET_64 (FL2FXCONST_DBL(0.09375f))
+
+#define LOW_RES 0
+#define HIGH_RES 1
+
+#define LO 0
+#define HI 1
+
+#define LENGTH_SBR_FRAME_INFO 35 /* 19 */
+
+#define SBR_NSFB_LOW_RES 9 /* 8 */
+#define SBR_NSFB_HIGH_RES 18 /* 16 */
+
+
+#define SBR_XPOS_CTRL_DEFAULT 2
+
+#define SBR_FREQ_SCALE_DEFAULT 2
+#define SBR_ALTER_SCALE_DEFAULT 1
+#define SBR_NOISE_BANDS_DEFAULT 2
+
+#define SBR_LIMITER_BANDS_DEFAULT 2
+#define SBR_LIMITER_GAINS_DEFAULT 2
+#define SBR_LIMITER_GAINS_INFINITE 3
+#define SBR_INTERPOL_FREQ_DEFAULT 1
+#define SBR_SMOOTHING_LENGTH_DEFAULT 0
+
+
+/* sbr_header */
+#define SI_SBR_AMP_RES_BITS 1
+#define SI_SBR_COUPLING_BITS 1
+#define SI_SBR_START_FREQ_BITS 4
+#define SI_SBR_STOP_FREQ_BITS 4
+#define SI_SBR_XOVER_BAND_BITS 3
+#define SI_SBR_RESERVED_BITS 2
+#define SI_SBR_DATA_EXTRA_BITS 1
+#define SI_SBR_HEADER_EXTRA_1_BITS 1
+#define SI_SBR_HEADER_EXTRA_2_BITS 1
+
+/* sbr_header extra 1 */
+#define SI_SBR_FREQ_SCALE_BITS 2
+#define SI_SBR_ALTER_SCALE_BITS 1
+#define SI_SBR_NOISE_BANDS_BITS 2
+
+/* sbr_header extra 2 */
+#define SI_SBR_LIMITER_BANDS_BITS 2
+#define SI_SBR_LIMITER_GAINS_BITS 2
+#define SI_SBR_INTERPOL_FREQ_BITS 1
+#define SI_SBR_SMOOTHING_LENGTH_BITS 1
+
+/* sbr_grid */
+#define SBR_CLA_BITS 2 /*!< size of bs_frame_class */
+#define SBR_CLA_BITS_LD 1 /*!< size of bs_frame_class */
+#define SBR_ENV_BITS 2 /*!< size of bs_num_env_raw */
+#define SBR_ABS_BITS 2 /*!< size of bs_abs_bord_raw for HE-AAC */
+#define SBR_NUM_BITS 2 /*!< size of bs_num_rel */
+#define SBR_REL_BITS 2 /*!< size of bs_rel_bord_raw */
+#define SBR_RES_BITS 1 /*!< size of bs_freq_res_flag */
+#define SBR_DIR_BITS 1 /*!< size of bs_df_flag */
+
+
+/* sbr_data */
+#define SI_SBR_INVF_MODE_BITS 2
+
+
+#define SI_SBR_START_ENV_BITS_AMP_RES_3_0 6
+#define SI_SBR_START_ENV_BITS_BALANCE_AMP_RES_3_0 5
+#define SI_SBR_START_NOISE_BITS_AMP_RES_3_0 5
+#define SI_SBR_START_NOISE_BITS_BALANCE_AMP_RES_3_0 5
+
+#define SI_SBR_START_ENV_BITS_AMP_RES_1_5 7
+#define SI_SBR_START_ENV_BITS_BALANCE_AMP_RES_1_5 6
+
+
+#define SI_SBR_EXTENDED_DATA_BITS 1
+#define SI_SBR_EXTENSION_SIZE_BITS 4
+#define SI_SBR_EXTENSION_ESC_COUNT_BITS 8
+#define SI_SBR_EXTENSION_ID_BITS 2
+
+#define SBR_EXTENDED_DATA_MAX_CNT (15+255)
+
+#define EXTENSION_ID_PS_CODING 2
+
+/* Envelope coding constants */
+#define FREQ 0
+#define TIME 1
+
+
+/* huffman tables */
+#define CODE_BOOK_SCF_LAV00 60
+#define CODE_BOOK_SCF_LAV01 31
+#define CODE_BOOK_SCF_LAV10 60
+#define CODE_BOOK_SCF_LAV11 31
+#define CODE_BOOK_SCF_LAV_BALANCE11 12
+#define CODE_BOOK_SCF_LAV_BALANCE10 24
+
+typedef enum
+{
+ SBR_AMP_RES_1_5=0,
+ SBR_AMP_RES_3_0
+}
+AMP_RES;
+
+typedef enum
+{
+ XPOS_MDCT,
+ XPOS_MDCT_CROSS,
+ XPOS_LC,
+ XPOS_RESERVED,
+ XPOS_SWITCHED /* not a real choice but used here to control behaviour */
+}
+XPOS_MODE;
+
+typedef enum
+{
+ INVF_OFF = 0,
+ INVF_LOW_LEVEL,
+ INVF_MID_LEVEL,
+ INVF_HIGH_LEVEL,
+ INVF_SWITCHED /* not a real choice but used here to control behaviour */
+}
+INVF_MODE;
+
+typedef enum
+{
+ SINGLE_RATE,
+ DUAL_RATE
+}
+SR_MODE;
+
+typedef enum
+{
+ FREQ_RES_LOW = 0,
+ FREQ_RES_HIGH
+}
+FREQ_RES;
+
+
+#endif