1 /*
2 * Copyright (C) 2003 - 2016 Sony Corporation
3 *
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
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
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 express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "ldac.h"
18
19 /***************************************************************************************************
20 Subfunction: Convert from 16bit Signed Integer PCM
21 ***************************************************************************************************/
byte_data_to_int_s16_ldac(char * p_in,INT32 * p_out,int nsmpl)22 __inline static void byte_data_to_int_s16_ldac(
23 char *p_in,
24 INT32 *p_out,
25 int nsmpl)
26 {
27 int i;
28 short *p_s;
29
30 p_s = (short *)p_in;
31 for (i = 0; i < nsmpl; i++) {
32 *p_out++ = lsft_ldac((INT32)*p_s++, LDAC_Q_SETPCM);
33 }
34
35 return;
36 }
37
38 /***************************************************************************************************
39 Subfunction: Convert from 24bit Signed Integer PCM
40 ***************************************************************************************************/
byte_data_to_int_s24_ldac(char * p_in,INT32 * p_out,int nsmpl)41 __inline static void byte_data_to_int_s24_ldac(
42 char *p_in,
43 INT32 *p_out,
44 int nsmpl)
45 {
46 int i, val;
47 char *p_c;
48
49 p_c = (char *)p_in;
50 for (i = 0; i < nsmpl; i++) {
51 #ifdef LDAC_HOST_ENDIAN_LITTLE
52 val = 0x000000ff & (*p_c++);
53 val |= 0x0000ff00 & (*p_c++ << 8);
54 val |= 0xffff0000 & (*p_c++ << 16);
55 #else /* LDAC_HOST_ENDIAN_LITTLE */
56 val = 0xffff0000 & (*p_c++ << 16);
57 val |= 0x0000ff00 & (*p_c++ << 8);
58 val |= 0x000000ff & (*p_c++);
59 #endif /* LDAC_HOST_ENDIAN_LITTLE */
60 *p_out++ = (INT32)((val << 8) >> 1); /* Sign Extension */
61 }
62
63 return;
64 }
65
66 /***************************************************************************************************
67 Subfunction: Convert from 32bit Signed Integer PCM
68 ***************************************************************************************************/
byte_data_to_int_s32_ldac(char * p_in,INT32 * p_out,int nsmpl)69 __inline static void byte_data_to_int_s32_ldac(
70 char *p_in,
71 INT32 *p_out,
72 int nsmpl)
73 {
74 int i;
75 int *p_l;
76
77 p_l = (int *)p_in;
78 for (i = 0; i < nsmpl; i++) {
79 *p_out++ = rsft_ldac((INT32)*p_l++, 16-LDAC_Q_SETPCM);
80 }
81
82 return;
83 }
84
85 /***************************************************************************************************
86 Set Input PCM
87 ***************************************************************************************************/
set_input_pcm_ldac(SFINFO * p_sfinfo,char * pp_pcm[],LDAC_SMPL_FMT_T format,int nlnn)88 DECLFUNC void set_input_pcm_ldac(
89 SFINFO *p_sfinfo,
90 char *pp_pcm[],
91 LDAC_SMPL_FMT_T format,
92 int nlnn)
93 {
94 int ich, isp;
95 int nchs = p_sfinfo->cfg.ch;
96 int nsmpl = npow2_ldac(nlnn);
97 INT32 *p_time;
98
99 if (format == LDAC_SMPL_FMT_S16) {
100 for (ich = 0; ich < nchs; ich++) {
101 p_time = p_sfinfo->ap_ac[ich]->p_acsub->a_time;
102 for (isp = 0; isp < nsmpl; isp++) {
103 p_time[isp] = p_time[nsmpl+isp];
104 }
105 byte_data_to_int_s16_ldac(pp_pcm[ich], p_time+nsmpl, nsmpl);
106 }
107 }
108 else if (format == LDAC_SMPL_FMT_S24) {
109 for (ich = 0; ich < nchs; ich++) {
110 p_time = p_sfinfo->ap_ac[ich]->p_acsub->a_time;
111 for (isp = 0; isp < nsmpl; isp++) {
112 p_time[isp] = p_time[nsmpl+isp];
113 }
114 byte_data_to_int_s24_ldac(pp_pcm[ich], p_time+nsmpl, nsmpl);
115 }
116 }
117 else if (format == LDAC_SMPL_FMT_S32) {
118 for (ich = 0; ich < nchs; ich++) {
119 p_time = p_sfinfo->ap_ac[ich]->p_acsub->a_time;
120 for (isp = 0; isp < nsmpl; isp++) {
121 p_time[isp] = p_time[nsmpl+isp];
122 }
123 byte_data_to_int_s32_ldac(pp_pcm[ich], p_time+nsmpl, nsmpl);
124 }
125 }
126
127 return;
128 }
129
130
131