be3eea279227aed64aa299e52ae354ac7cdff71f
[deb_fdk-aac.git] / libAACenc / src / aacEnc_ram.cpp
1
2 /* -----------------------------------------------------------------------------------------------------------
3 Software License for The Fraunhofer FDK AAC Codec Library for Android
4
5 © Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
6 All rights reserved.
7
8 1. INTRODUCTION
9 The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
10 the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
11 This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
12
13 AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
14 audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
15 independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
16 of the MPEG specifications.
17
18 Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
19 may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
20 individually for the purpose of encoding or decoding bit streams in products that are compliant with
21 the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
22 these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
23 software may already be covered under those patent licenses when it is used for those licensed purposes only.
24
25 Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
26 are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
27 applications information and documentation.
28
29 2. COPYRIGHT LICENSE
30
31 Redistribution and use in source and binary forms, with or without modification, are permitted without
32 payment of copyright license fees provided that you satisfy the following conditions:
33
34 You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
35 your modifications thereto in source code form.
36
37 You must retain the complete text of this software license in the documentation and/or other materials
38 provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
39 You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
40 modifications thereto to recipients of copies in binary form.
41
42 The name of Fraunhofer may not be used to endorse or promote products derived from this library without
43 prior written permission.
44
45 You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
46 software or your modifications thereto.
47
48 Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
49 and the date of any change. For modified versions of the FDK AAC Codec, the term
50 "Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
51 "Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
52
53 3. NO PATENT LICENSE
54
55 NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
56 ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
57 respect to this software.
58
59 You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
60 by appropriate patent licenses.
61
62 4. DISCLAIMER
63
64 This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
65 "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
66 of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
67 CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
68 including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
69 or business interruption, however caused and on any theory of liability, whether in contract, strict
70 liability, or tort (including negligence), arising in any way out of the use of this software, even if
71 advised of the possibility of such damage.
72
73 5. CONTACT INFORMATION
74
75 Fraunhofer Institute for Integrated Circuits IIS
76 Attention: Audio and Multimedia Departments - FDK AAC LL
77 Am Wolfsmantel 33
78 91058 Erlangen, Germany
79
80 www.iis.fraunhofer.de/amm
81 amm-info@iis.fraunhofer.de
82 ----------------------------------------------------------------------------------------------------------- */
83
84 /******************************************************************************
85
86 Initial authors: M. Lohwasser, M. Gayer
87 Contents/description:
88
89 ******************************************************************************/
90 /*!
91 \file
92 \brief Memory layout
93 \author Markus Lohwasser
94 */
95
96 #include "aacEnc_ram.h"
97
98 C_AALLOC_MEM (AACdynamic_RAM, FIXP_DBL, AAC_ENC_DYN_RAM_SIZE/sizeof(FIXP_DBL))
99
100 /*
101 Static memory areas, must not be overwritten in other sections of the decoder !
102 */
103
104 /*
105 The structure AacEncoder contains all Encoder structures.
106 */
107
108 C_ALLOC_MEM (Ram_aacEnc_AacEncoder, AAC_ENC, 1)
109
110
111 /*
112 The structure PSY_INTERNAl contains all psych configuration and data pointer.
113 * PsyStatic holds last and current Psych data.
114 * PsyInputBuffer contains time input. Signal is needed at the beginning of Psych.
115 Memory can be reused after signal is in time domain.
116 * PsyData contains spectral, nrg and threshold information. Necessary data are
117 copied into PsyOut, so memory is available after leaving psych.
118 * TnsData, ChaosMeasure, PnsData are temporarily necessary, e.g. use memory from
119 PsyInputBuffer.
120 */
121
122 C_ALLOC_MEM2 (Ram_aacEnc_PsyElement, PSY_ELEMENT, 1, (8))
123
124 C_ALLOC_MEM (Ram_aacEnc_PsyInternal, PSY_INTERNAL, 1)
125 C_ALLOC_MEM2 (Ram_aacEnc_PsyStatic, PSY_STATIC, 1, (8))
126
127 C_ALLOC_MEM2 (Ram_aacEnc_PsyInputBuffer, INT_PCM, MAX_INPUT_BUFFER_SIZE, (8))
128
129 PSY_DYNAMIC *GetRam_aacEnc_PsyDynamic (int n, UCHAR* dynamic_RAM) {
130 FDK_ASSERT(dynamic_RAM!=0);
131 return ((PSY_DYNAMIC*) (dynamic_RAM + P_BUF_1 + n*sizeof(PSY_DYNAMIC)));
132 }
133
134 C_ALLOC_MEM (Ram_bsOutbuffer, UCHAR, OUTPUTBUFFER_SIZE)
135
136 /*
137 The structure PSY_OUT holds all psychoaccoustic data needed
138 in quantization module
139 */
140 C_ALLOC_MEM2 (Ram_aacEnc_PsyOut, PSY_OUT, 1, (1))
141
142 C_ALLOC_MEM2 (Ram_aacEnc_PsyOutElements, PSY_OUT_ELEMENT, 1, (1)*(8))
143 C_ALLOC_MEM2 (Ram_aacEnc_PsyOutChannel, PSY_OUT_CHANNEL, 1, (1)*(8))
144
145
146 /*
147 The structure QC_STATE contains preinitialized settings and quantizer structures.
148 * AdjustThreshold structure contains element-wise settings.
149 * ElementBits contains elemnt-wise bit consumption settings.
150 * When CRC is active, lookup table is necessary for fast crc calculation.
151 * Bitcounter contains buffer to find optimal codebooks and minimal bit consumption.
152 Values are temporarily, so dynamic memory can be used.
153 */
154
155 C_ALLOC_MEM (Ram_aacEnc_QCstate, QC_STATE, 1)
156 C_ALLOC_MEM (Ram_aacEnc_AdjustThreshold, ADJ_THR_STATE, 1)
157
158 C_ALLOC_MEM2 (Ram_aacEnc_AdjThrStateElement, ATS_ELEMENT, 1, (8))
159 C_ALLOC_MEM2 (Ram_aacEnc_ElementBits, ELEMENT_BITS, 1, (8))
160 C_ALLOC_MEM (Ram_aacEnc_BitCntrState, BITCNTR_STATE, 1)
161
162 INT *GetRam_aacEnc_BitLookUp(int n, UCHAR* dynamic_RAM) {
163 FDK_ASSERT(dynamic_RAM!=0);
164 return ((INT*) (dynamic_RAM + P_BUF_1));
165 }
166 INT *GetRam_aacEnc_MergeGainLookUp(int n, UCHAR* dynamic_RAM) {
167 FDK_ASSERT(dynamic_RAM!=0);
168 return ((INT*) (dynamic_RAM + P_BUF_1 + sizeof(INT)*(MAX_SFB_LONG*(CODE_BOOK_ESC_NDX+1))));
169 }
170
171
172 /*
173 The structure QC_OUT contains settings and structures holding all necessary information
174 needed in bitstreamwriter.
175 */
176
177 C_ALLOC_MEM2 (Ram_aacEnc_QCout, QC_OUT, 1, (1))
178 C_ALLOC_MEM2 (Ram_aacEnc_QCelement, QC_OUT_ELEMENT, (1), (8))
179 QC_OUT_CHANNEL *GetRam_aacEnc_QCchannel (int n, UCHAR* dynamic_RAM) {
180 FDK_ASSERT(dynamic_RAM!=0);
181 return ((QC_OUT_CHANNEL*) (dynamic_RAM + P_BUF_0 + n*sizeof(QC_OUT_CHANNEL)));
182 }
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