Line data Source code
1 : /******************************************************************************************************
2 :
3 : (C) 2022-2025 IVAS codec Public Collaboration with portions copyright Dolby International AB, Ericsson AB,
4 : Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Huawei Technologies Co. LTD.,
5 : Koninklijke Philips N.V., Nippon Telegraph and Telephone Corporation, Nokia Technologies Oy, Orange,
6 : Panasonic Holdings Corporation, Qualcomm Technologies, Inc., VoiceAge Corporation, and other
7 : contributors to this repository. All Rights Reserved.
8 :
9 : This software is protected by copyright law and by international treaties.
10 : The IVAS codec Public Collaboration consisting of Dolby International AB, Ericsson AB,
11 : Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Huawei Technologies Co. LTD.,
12 : Koninklijke Philips N.V., Nippon Telegraph and Telephone Corporation, Nokia Technologies Oy, Orange,
13 : Panasonic Holdings Corporation, Qualcomm Technologies, Inc., VoiceAge Corporation, and other
14 : contributors to this repository retain full ownership rights in their respective contributions in
15 : the software. This notice grants no license of any kind, including but not limited to patent
16 : license, nor is any license granted by implication, estoppel or otherwise.
17 :
18 : Contributors are required to enter into the IVAS codec Public Collaboration agreement before making
19 : contributions.
20 :
21 : This software is provided "AS IS", without any express or implied warranties. The software is in the
22 : development stage. It is intended exclusively for experts who have experience with such software and
23 : solely for the purpose of inspection. All implied warranties of non-infringement, merchantability
24 : and fitness for a particular purpose are hereby disclaimed and excluded.
25 :
26 : Any dispute, controversy or claim arising under or in relation to providing this software shall be
27 : submitted to and settled by the final, binding jurisdiction of the courts of Munich, Germany in
28 : accordance with the laws of the Federal Republic of Germany excluding its conflict of law rules and
29 : the United Nations Convention on Contracts on the International Sales of Goods.
30 :
31 : *******************************************************************************************************/
32 :
33 : #include "ivas_cnst.h"
34 : #include "options.h"
35 : #include "wmc_auto.h"
36 : #include "ivas_prot_fx.h"
37 :
38 :
39 : /*--------------------------------------------------------------------------*
40 : * ivas_mcmasa_setNumTransportChannels()
41 : *
42 : * Set number of transport channels in McMASA
43 : *--------------------------------------------------------------------------*/
44 :
45 739 : void ivas_mcmasa_setNumTransportChannels_fx(
46 : Word16 *nchan_transport, /* o : Pointer to number of transport channels to be set */
47 : Word16 *element_mode, /* o : Pointer to element mode to be set */
48 : const Word32 ivas_total_brate /* i : Total bitrate of IVAS */
49 : )
50 : {
51 739 : IF( GE_32( ivas_total_brate, IVAS_48k ) )
52 : {
53 117 : *nchan_transport = 2;
54 117 : move16();
55 117 : *element_mode = IVAS_CPE_MDCT;
56 117 : move16();
57 : }
58 : ELSE
59 : {
60 622 : *nchan_transport = 1;
61 622 : move16();
62 622 : *element_mode = IVAS_SCE;
63 622 : move16();
64 : }
65 :
66 739 : return;
67 : }
68 :
69 :
70 : /*--------------------------------------------------------------------------*
71 : * ivas_mcmasa_set_separate_channel_mode()
72 : *
73 : * Set separate channel parameters in McMASA based on bitrate
74 : *--------------------------------------------------------------------------*/
75 :
76 947 : void ivas_mcmasa_set_separate_channel_mode_fx(
77 : UWord8 *separateChannelEnabled, /* o : Pointer to separate channel toggle */
78 : Word16 *separateChannelIndex, /* o : Pointer to separate channel index */
79 : const Word32 ivas_total_brate /* i : Total bitrate of IVAS */
80 : )
81 : {
82 947 : IF( GE_32( ivas_total_brate, MCMASA_SEPARATE_BRATE ) )
83 : {
84 79 : *separateChannelEnabled = 1;
85 79 : move16();
86 79 : *separateChannelIndex = 2; /* Center channel */
87 79 : move16();
88 : }
89 : ELSE
90 : {
91 868 : *separateChannelEnabled = 0;
92 868 : move16();
93 868 : *separateChannelIndex = 0;
94 868 : move16();
95 : }
96 :
97 947 : return;
98 : }
99 :
100 :
101 : /*--------------------------------------------------------------------------*
102 : * ivas_mcmasa_split_brate()
103 : *
104 : * Split the total bitrate to elements in McMASA
105 : *--------------------------------------------------------------------------*/
106 :
107 508 : void ivas_mcmasa_split_brate_fx(
108 : const UWord8 separateChannelEnabled, /* i : Transport running in "separate channel" mode */
109 : const Word32 ivas_total_brate, /* i : IVAS total bitrate available to be split */
110 : const Word16 nSCE, /* i : Number of SCEs in use (0 or 1) */
111 : const Word16 nCPE, /* i : Number of CPEs in use (0 or 1) */
112 : Word32 *brate_sce, /* o : Pointer to SCE element bitrate */
113 : Word32 *brate_cpe /* o : Pointer to CPE element bitrate */
114 : )
115 : {
116 508 : IF( separateChannelEnabled )
117 : {
118 : /* 25% of total bitrate is used for SCE below 96 kb/s (separated mono channel), otherwise 30% */
119 46 : IF( LT_32( ivas_total_brate, IVAS_96k ) )
120 : {
121 39 : *brate_sce = Mpy_32_32( MCMASA_MONOBITRATIO_64k_Q31, ivas_total_brate ); /* Q0 */
122 39 : move32();
123 : }
124 : ELSE
125 : {
126 7 : *brate_sce = Mpy_32_32( MCMASA_MONOBITRATIO_Q31, ivas_total_brate ); /* Q0 */
127 7 : move32();
128 : }
129 :
130 46 : *brate_cpe = L_sub( ivas_total_brate, *brate_sce );
131 46 : move32();
132 : }
133 : ELSE
134 : {
135 : Word16 tmp, tmp_e;
136 462 : tmp_e = 0;
137 462 : move16();
138 462 : tmp = BASOP_Util_Divide3216_Scale( ivas_total_brate, ( add( nCPE, nSCE ) ), &tmp_e );
139 462 : IF( nSCE > 0 )
140 : {
141 424 : *brate_sce = L_shr( (Word32) tmp, negate( add( 1, tmp_e ) ) );
142 424 : move32();
143 : }
144 : ELSE
145 : {
146 38 : *brate_sce = 0;
147 38 : move32();
148 : }
149 462 : IF( nCPE > 0 )
150 : {
151 38 : *brate_cpe = L_shr( (Word32) tmp, negate( add( 1, tmp_e ) ) );
152 38 : move32();
153 : }
154 : ELSE
155 : {
156 424 : *brate_cpe = 0;
157 424 : move32();
158 : }
159 : }
160 :
161 508 : return;
162 : }
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