1 /* ------------------------------------------------------------------
2 * Copyright (C) 1998-2009 PacketVideo
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
14 * See the License for the specific language governing permissions
15 * and limitations under the License.
16 * -------------------------------------------------------------------
20 Filename: sbr_get_dir_control_data.c
22 ------------------------------------------------------------------------------
29 ------------------------------------------------------------------------------
30 INPUT AND OUTPUT DEFINITIONS
32 Arguments: h_frame_data - handle to struct SBR_FRAME_DATA
33 hBitBuf - handle to struct BIT_BUF
38 ------------------------------------------------------------------------------
41 Reads direction control data from bitstream
43 ------------------------------------------------------------------------------
47 ------------------------------------------------------------------------------
50 SC 29 Software Copyright Licencing Disclaimer:
52 This software module was originally developed by
58 in the course of development of the ISO/IEC 13818-7 and ISO/IEC 14496-3
59 standards for reference purposes and its performance may not have been
60 optimized. This software module is an implementation of one or more tools as
61 specified by the ISO/IEC 13818-7 and ISO/IEC 14496-3 standards.
62 ISO/IEC gives users free license to this software module or modifications
63 thereof for use in products claiming conformance to audiovisual and
64 image-coding related ITU Recommendations and/or ISO/IEC International
65 Standards. ISO/IEC gives users the same free license to this software module or
66 modifications thereof for research purposes and further ISO/IEC standardisation.
67 Those intending to use this software module in products are advised that its
68 use may infringe existing patents. ISO/IEC have no liability for use of this
69 software module or modifications thereof. Copyright is not released for
70 products that do not conform to audiovisual and image-coding related ITU
71 Recommendations and/or ISO/IEC International Standards.
72 The original developer retains full right to modify and use the code for its
73 own purpose, assign or donate the code to a third party and to inhibit third
74 parties from using the code for products that do not conform to audiovisual and
75 image-coding related ITU Recommendations and/or ISO/IEC International Standards.
76 This copyright notice must be included in all copies or derivative works.
77 Copyright (c) ISO/IEC 2002.
79 ------------------------------------------------------------------------------
82 ------------------------------------------------------------------------------
86 /*----------------------------------------------------------------------------
88 ----------------------------------------------------------------------------*/
93 #include "sbr_get_dir_control_data.h"
94 #include "buf_getbits.h"
96 /*----------------------------------------------------------------------------
98 ; Define module specific macros here
99 ----------------------------------------------------------------------------*/
102 /*----------------------------------------------------------------------------
104 ; Include all pre-processor statements here. Include conditional
105 ; compile variables also.
106 ----------------------------------------------------------------------------*/
108 /*----------------------------------------------------------------------------
109 ; LOCAL FUNCTION DEFINITIONS
110 ; Function Prototype declaration
111 ----------------------------------------------------------------------------*/
113 /*----------------------------------------------------------------------------
114 ; LOCAL STORE/BUFFER/POINTER DEFINITIONS
115 ; Variable declaration - defined here and used outside this module
116 ----------------------------------------------------------------------------*/
118 /*----------------------------------------------------------------------------
119 ; EXTERNAL FUNCTION REFERENCES
120 ; Declare functions defined elsewhere and referenced in this module
121 ----------------------------------------------------------------------------*/
123 /*----------------------------------------------------------------------------
124 ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
125 ; Declare variables used in this module but defined elsewhere
126 ----------------------------------------------------------------------------*/
128 /*----------------------------------------------------------------------------
130 ----------------------------------------------------------------------------*/
132 void sbr_get_dir_control_data(SBR_FRAME_DATA * h_frame_data,
133 BIT_BUFFER * hBitBuf)
137 h_frame_data->nNoiseFloorEnvelopes = h_frame_data->frameInfo[0] > 1 ? 2 : 1;
140 for (i = 0; i < h_frame_data->frameInfo[0]; i++)
142 h_frame_data->domain_vec1[i] = buf_getbits(hBitBuf, SI_SBR_DOMAIN_BITS);
145 for (i = 0; i < h_frame_data->nNoiseFloorEnvelopes; i++)
147 h_frame_data->domain_vec2[i] = buf_getbits(hBitBuf, SI_SBR_DOMAIN_BITS);