1/* -----------------------------------------------------------------------------
2Software License for The Fraunhofer FDK AAC Codec Library for Android
3
4© Copyright  1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten
5Forschung e.V. All rights reserved.
6
7 1.    INTRODUCTION
8The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software
9that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding
10scheme for digital audio. This FDK AAC Codec software is intended to be used on
11a wide variety of Android devices.
12
13AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient
14general perceptual audio codecs. AAC-ELD is considered the best-performing
15full-bandwidth communications codec by independent studies and is widely
16deployed. AAC has been standardized by ISO and IEC as part of the MPEG
17specifications.
18
19Patent licenses for necessary patent claims for the FDK AAC Codec (including
20those of Fraunhofer) may be obtained through Via Licensing
21(www.vialicensing.com) or through the respective patent owners individually for
22the purpose of encoding or decoding bit streams in products that are compliant
23with the ISO/IEC MPEG audio standards. Please note that most manufacturers of
24Android devices already license these patent claims through Via Licensing or
25directly from the patent owners, and therefore FDK AAC Codec software may
26already be covered under those patent licenses when it is used for those
27licensed purposes only.
28
29Commercially-licensed AAC software libraries, including floating-point versions
30with enhanced sound quality, are also available from Fraunhofer. Users are
31encouraged to check the Fraunhofer website for additional applications
32information and documentation.
33
342.    COPYRIGHT LICENSE
35
36Redistribution and use in source and binary forms, with or without modification,
37are permitted without payment of copyright license fees provided that you
38satisfy the following conditions:
39
40You must retain the complete text of this software license in redistributions of
41the FDK AAC Codec or your modifications thereto in source code form.
42
43You must retain the complete text of this software license in the documentation
44and/or other materials provided with redistributions of the FDK AAC Codec or
45your modifications thereto in binary form. You must make available free of
46charge copies of the complete source code of the FDK AAC Codec and your
47modifications thereto to recipients of copies in binary form.
48
49The name of Fraunhofer may not be used to endorse or promote products derived
50from this library without prior written permission.
51
52You may not charge copyright license fees for anyone to use, copy or distribute
53the FDK AAC Codec software or your modifications thereto.
54
55Your modified versions of the FDK AAC Codec must carry prominent notices stating
56that you changed the software and the date of any change. For modified versions
57of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android"
58must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK
59AAC Codec Library for Android."
60
613.    NO PATENT LICENSE
62
63NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without
64limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE.
65Fraunhofer provides no warranty of patent non-infringement with respect to this
66software.
67
68You may use this FDK AAC Codec software or modifications thereto only for
69purposes that are authorized by appropriate patent licenses.
70
714.    DISCLAIMER
72
73This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright
74holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
75including but not limited to the implied warranties of merchantability and
76fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
77CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary,
78or consequential damages, including but not limited to procurement of substitute
79goods or services; loss of use, data, or profits, or business interruption,
80however caused and on any theory of liability, whether in contract, strict
81liability, or tort (including negligence), arising in any way out of the use of
82this software, even if advised of the possibility of such damage.
83
845.    CONTACT INFORMATION
85
86Fraunhofer Institute for Integrated Circuits IIS
87Attention: Audio and Multimedia Departments - FDK AAC LL
88Am Wolfsmantel 33
8991058 Erlangen, Germany
90
91www.iis.fraunhofer.de/amm
92amm-info@iis.fraunhofer.de
93----------------------------------------------------------------------------- */
94
95/******************* Library for basic calculation routines ********************
96
97   Author(s):   Oliver Moser
98
99   Description: ROM tables used by FDK tools
100
101*******************************************************************************/
102
103#ifndef FDK_TOOLS_ROM_H
104#define FDK_TOOLS_ROM_H
105
106#include "common_fix.h"
107#include "FDK_audio.h"
108
109/* sinetables */
110
111/* None radix2 rotation vectors */
112extern RAM_ALIGN const FIXP_STB RotVectorReal60[60];
113extern RAM_ALIGN const FIXP_STB RotVectorImag60[60];
114extern RAM_ALIGN const FIXP_STB RotVectorReal192[192];
115extern RAM_ALIGN const FIXP_STB RotVectorImag192[192];
116extern RAM_ALIGN const FIXP_STB RotVectorReal240[210];
117extern RAM_ALIGN const FIXP_STB RotVectorImag240[210];
118extern RAM_ALIGN const FIXP_STB RotVectorReal480[480];
119extern RAM_ALIGN const FIXP_STB RotVectorImag480[480];
120extern RAM_ALIGN const FIXP_STB RotVectorReal6[6];
121extern RAM_ALIGN const FIXP_STB RotVectorImag6[6];
122extern RAM_ALIGN const FIXP_STB RotVectorReal12[12];
123extern RAM_ALIGN const FIXP_STB RotVectorImag12[12];
124extern RAM_ALIGN const FIXP_STB RotVectorReal24[24];
125extern RAM_ALIGN const FIXP_STB RotVectorImag24[24];
126extern RAM_ALIGN const FIXP_STB RotVectorReal48[48];
127extern RAM_ALIGN const FIXP_STB RotVectorImag48[48];
128extern RAM_ALIGN const FIXP_STB RotVectorReal80[80];
129extern RAM_ALIGN const FIXP_STB RotVectorImag80[80];
130extern RAM_ALIGN const FIXP_STB RotVectorReal96[96];
131extern RAM_ALIGN const FIXP_STB RotVectorImag96[96];
132extern RAM_ALIGN const FIXP_STB RotVectorReal384[384];
133extern RAM_ALIGN const FIXP_STB RotVectorImag384[384];
134extern RAM_ALIGN const FIXP_STB RotVectorReal20[20];
135extern RAM_ALIGN const FIXP_STB RotVectorImag20[20];
136extern RAM_ALIGN const FIXP_STB RotVectorReal120[120];
137extern RAM_ALIGN const FIXP_STB RotVectorImag120[120];
138
139/* Regular sine tables */
140extern RAM_ALIGN const FIXP_STP SineTable1024[];
141extern RAM_ALIGN const FIXP_STP SineTable512[];
142extern RAM_ALIGN const FIXP_STP SineTable480[];
143extern RAM_ALIGN const FIXP_STP SineTable384[];
144extern RAM_ALIGN const FIXP_STP SineTable80[];
145#ifdef INCLUDE_SineTable10
146extern RAM_ALIGN const FIXP_STP SineTable10[];
147#endif
148
149/* AAC-LC windows */
150extern RAM_ALIGN const FIXP_WTP SineWindow1024[];
151extern RAM_ALIGN const FIXP_WTP KBDWindow1024[];
152extern RAM_ALIGN const FIXP_WTP SineWindow128[];
153extern RAM_ALIGN const FIXP_WTP KBDWindow128[];
154
155extern RAM_ALIGN const FIXP_WTP SineWindow960[];
156extern RAM_ALIGN const FIXP_WTP KBDWindow960[];
157extern RAM_ALIGN const FIXP_WTP SineWindow120[];
158extern RAM_ALIGN const FIXP_WTP KBDWindow120[];
159
160/* AAC-LD windows */
161extern RAM_ALIGN const FIXP_WTP SineWindow512[];
162#define LowOverlapWindow512 SineWindow128
163extern RAM_ALIGN const FIXP_WTP SineWindow480[];
164#define LowOverlapWindow480 SineWindow120
165
166/* USAC TCX Window */
167extern RAM_ALIGN const FIXP_WTP SineWindow256[256];
168extern RAM_ALIGN const FIXP_WTP SineWindow192[];
169
170/* USAC 8/3 windows */
171extern RAM_ALIGN const FIXP_WTP SineWindow768[];
172extern RAM_ALIGN const FIXP_WTP KBDWindow768[];
173extern RAM_ALIGN const FIXP_WTP SineWindow96[];
174extern RAM_ALIGN const FIXP_WTP KBDWindow96[];
175
176/* DCT and others */
177extern RAM_ALIGN const FIXP_WTP SineWindow64[];
178extern RAM_ALIGN const FIXP_WTP SineWindow48[];
179extern RAM_ALIGN const FIXP_WTP SineWindow32[];
180extern RAM_ALIGN const FIXP_WTP SineWindow24[];
181extern RAM_ALIGN const FIXP_WTP SineWindow16[];
182extern RAM_ALIGN const FIXP_WTP SineWindow8[];
183
184/**
185 * \brief Helper table for window slope mapping. You should prefer the usage of
186 * the function FDKgetWindowSlope(), this table is only made public for some
187 * optimized access inside dct.cpp.
188 */
189extern const FIXP_WTP *const windowSlopes[2][4][9];
190
191/**
192 * \brief Window slope access helper. Obtain a window of given length and shape.
193 * \param length Length of the window slope.
194 * \param shape Shape index of the window slope. 0: sine window, 1:
195 * Kaiser-Bessel. Any other value is applied a mask of 1 to, mapping it to
196 * either 0 or 1.
197 * \param Pointer to window slope or NULL if the requested window slope is not
198 * available.
199 */
200const FIXP_WTP *FDKgetWindowSlope(int length, int shape);
201
202extern const FIXP_WTP sin_twiddle_L64[];
203
204/*
205 * Filter coefficient type definition
206 */
207
208#if defined(ARCH_PREFER_MULT_16x16) || defined(ARCH_PREFER_MULT_32x16)
209#define QMF_COEFF_16BIT
210#endif
211
212#define QMF_FILTER_PROTOTYPE_SIZE 640
213#define QMF_NO_POLY 5
214
215#ifdef QMF_COEFF_16BIT
216#define FIXP_PFT FIXP_SGL
217#define FIXP_QTW FIXP_SGL
218#define FX_DBL2FX_QTW(x) FX_DBL2FX_SGL(x)
219#else
220#define FIXP_PFT FIXP_DBL
221#define FIXP_QTW FIXP_DBL
222
223#define FX_DBL2FX_QTW(x) (x)
224
225#endif
226
227#define QMF640_PFT_TABLE_SIZE (640 / 2 + QMF_NO_POLY)
228
229/* Resampling twiddles for QMF */
230
231/* Not resampling twiddles */
232extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_cos32[32];
233extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_sin32[32];
234/* Adapted analysis post-twiddles for down-sampled HQ SBR */
235extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_cos_downsamp32[32];
236extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_sin_downsamp32[32];
237extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_cos64[64];
238extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_sin64[64];
239extern RAM_ALIGN const FIXP_PFT
240    qmf_pfilt640[QMF640_PFT_TABLE_SIZE + QMF_NO_POLY];
241extern RAM_ALIGN const FIXP_PFT qmf_pfilt640_vector[640];
242
243extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_cos40[40];
244extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_sin40[40];
245extern RAM_ALIGN const FIXP_PFT qmf_pfilt400[];
246extern RAM_ALIGN const FIXP_PFT qmf_pfilt200[];
247extern RAM_ALIGN const FIXP_PFT qmf_pfilt120[];
248
249extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_cos24[24];
250extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_sin24[24];
251extern RAM_ALIGN const FIXP_PFT qmf_pfilt240[];
252
253extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_cos16[16];
254extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_sin16[16];
255
256#define QMF640_CLDFB_PFT_TABLE_SIZE (640)
257#define QMF320_CLDFB_PFT_TABLE_SIZE (320)
258#define QMF_CLDFB_PFT_SCALE 1
259
260extern const FIXP_QTW qmf_phaseshift_cos32_cldfb_ana[32];
261extern const FIXP_QTW qmf_phaseshift_cos32_cldfb_syn[32];
262extern const FIXP_QTW qmf_phaseshift_sin32_cldfb[32];
263
264extern const FIXP_QTW qmf_phaseshift_cos16_cldfb_ana[16];
265extern const FIXP_QTW qmf_phaseshift_cos16_cldfb_syn[16];
266extern const FIXP_QTW qmf_phaseshift_sin16_cldfb[16];
267
268extern const FIXP_QTW qmf_phaseshift_cos8_cldfb_ana[8];
269extern const FIXP_QTW qmf_phaseshift_cos8_cldfb_syn[8];
270extern const FIXP_QTW qmf_phaseshift_sin8_cldfb[8];
271
272extern const FIXP_QTW qmf_phaseshift_cos64_cldfb[64];
273extern const FIXP_QTW qmf_phaseshift_sin64_cldfb[64];
274
275extern RAM_ALIGN const FIXP_PFT qmf_cldfb_640[QMF640_CLDFB_PFT_TABLE_SIZE];
276extern RAM_ALIGN const FIXP_PFT qmf_cldfb_320[QMF320_CLDFB_PFT_TABLE_SIZE];
277#define QMF160_CLDFB_PFT_TABLE_SIZE (160)
278extern RAM_ALIGN const FIXP_PFT qmf_cldfb_160[QMF160_CLDFB_PFT_TABLE_SIZE];
279#define QMF80_CLDFB_PFT_TABLE_SIZE (80)
280extern RAM_ALIGN const FIXP_PFT qmf_cldfb_80[QMF80_CLDFB_PFT_TABLE_SIZE];
281
282#define QMF320_MPSLDFB_PFT_TABLE_SIZE (320)
283#define QMF640_MPSLDFB_PFT_TABLE_SIZE (640)
284#define QMF_MPSLDFB_PFT_SCALE 1
285
286extern const FIXP_PFT qmf_mpsldfb_320[QMF320_MPSLDFB_PFT_TABLE_SIZE];
287extern RAM_ALIGN const FIXP_PFT qmf_mpsldfb_640[QMF640_MPSLDFB_PFT_TABLE_SIZE];
288
289/**
290 * Audio bitstream element specific syntax flags:
291 */
292#define AC_EL_GA_CCE 0x00000001 /*!< GA AAC coupling channel element (CCE) */
293
294/*
295 * Raw Data Block list items.
296 */
297typedef enum {
298  element_instance_tag,
299  common_window, /* -> decision for link_sequence */
300  global_gain,
301  ics_info, /* ics_reserved_bit, window_sequence, window_shape, max_sfb,
302               scale_factor_grouping, predictor_data_present, ltp_data_present,
303               ltp_data */
304  max_sfb,
305  ms,                         /* ms_mask_present, ms_used */
306  /*predictor_data_present,*/ /* part of ics_info */
307  ltp_data_present,
308  ltp_data,
309  section_data,
310  scale_factor_data,
311  pulse, /* pulse_data_present, pulse_data  */
312  tns_data_present,
313  tns_data,
314  gain_control_data_present,
315  gain_control_data,
316  esc1_hcr,
317  esc2_rvlc,
318  spectral_data,
319
320  scale_factor_data_usac,
321  core_mode, /* -> decision for link_sequence */
322  common_tw,
323  lpd_channel_stream,
324  tw_data,
325  noise,
326  ac_spectral_data,
327  fac_data,
328  tns_active, /* introduced in MPEG-D usac CD */
329  tns_data_present_usac,
330  common_max_sfb,
331
332  coupled_elements,   /* only for CCE parsing */
333  gain_element_lists, /* only for CCE parsing */
334
335  /* Non data list items */
336  adtscrc_start_reg1,
337  adtscrc_start_reg2,
338  adtscrc_end_reg1,
339  adtscrc_end_reg2,
340  drmcrc_start_reg,
341  drmcrc_end_reg,
342  next_channel,
343  next_channel_loop,
344  link_sequence,
345  end_of_sequence
346} rbd_id_t;
347
348struct element_list {
349  const rbd_id_t *id;
350  const struct element_list *next[2];
351};
352
353typedef struct element_list element_list_t;
354/**
355 * \brief get elementary stream pieces list for given parameters.
356 * \param aot audio object type
357 * \param epConfig the epConfig value from the current Audio Specific Config
358 * \param nChannels amount of channels contained in the current element.
359 * \param layer the layer of the current element.
360 * \param elFlags element specific flags.
361 * \return element_list_t parser guidance structure.
362 */
363const element_list_t *getBitstreamElementList(AUDIO_OBJECT_TYPE aot,
364                                              SCHAR epConfig, UCHAR nChannels,
365                                              UCHAR layer, UINT elFlags);
366
367typedef enum {
368  /* n.a. */
369  FDK_FORMAT_1_0 = 1,     /* mono */
370  FDK_FORMAT_2_0 = 2,     /* stereo */
371  FDK_FORMAT_3_0_FC = 3,  /* 3/0.0 */
372  FDK_FORMAT_3_1_0 = 4,   /* 3/1.0 */
373  FDK_FORMAT_5_0 = 5,     /* 3/2.0 */
374  FDK_FORMAT_5_1 = 6,     /* 5.1 */
375  FDK_FORMAT_7_1_ALT = 7, /* 5/2.1 ALT */
376  /* 8 n.a.*/
377  FDK_FORMAT_3_0_RC = 9, /* 2/1.0 */
378  FDK_FORMAT_2_2_0 = 10, /* 2/2.0 */
379  FDK_FORMAT_6_1 = 11,   /* 3/3.1 */
380  FDK_FORMAT_7_1 = 12,   /* 3/4.1 */
381  FDK_FORMAT_22_2 = 13,  /* 22.2 */
382  FDK_FORMAT_5_2_1 = 14, /* 5/2.1*/
383  FDK_FORMAT_5_5_2 = 15, /* 5/5.2 */
384  FDK_FORMAT_9_1 = 16,   /* 5/4.1 */
385  FDK_FORMAT_6_5_1 = 17, /* 6/5.1 */
386  FDK_FORMAT_6_7_1 = 18, /* 6/7.1 */
387  FDK_FORMAT_5_6_1 = 19, /* 5/6.1 */
388  FDK_FORMAT_7_6_1 = 20, /* 7/6.1 */
389  FDK_FORMAT_IN_LISTOFCHANNELS = 21,
390  FDK_FORMAT_OUT_LISTOFCHANNELS = 22,
391  /* 20 formats + In & Out list of channels */
392  FDK_NFORMATS = 23,
393  FDK_FORMAT_FAIL = -1
394} FDK_converter_formatid_t;
395
396extern const INT format_nchan[FDK_NFORMATS + 9 - 2];
397
398#endif
399