[0] | 1 | //convert.c: |
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| 2 | |
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[690] | 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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| 5 | * |
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| 6 | * This file is part of libroar a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * libroar is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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| 21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 22 | * |
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| 23 | * NOTE for everyone want's to change something and send patches: |
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| 24 | * read README and HACKING! There a addition information on |
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| 25 | * the license of this document you need to read before you send |
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| 26 | * any patches. |
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| 27 | * |
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| 28 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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| 29 | * or libpulse*: |
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| 30 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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| 31 | * and are therefore GPL. Because of this it may be illigal to use |
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| 32 | * them with any software that uses libesd, libartsc or libpulse*. |
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| 33 | */ |
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| 34 | |
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[0] | 35 | #include "libroar.h" |
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| 36 | |
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| 37 | int roar_conv_bits (void * out, void * in, int samples, int from, int to) { |
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[845] | 38 | int format; |
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| 39 | |
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[0] | 40 | if ( from == to ) { |
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| 41 | if ( in == out ) |
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| 42 | return 0; |
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| 43 | |
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| 44 | memcpy(out, in, samples * from / 8); |
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| 45 | return 0; |
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| 46 | } |
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| 47 | |
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[845] | 48 | format = ((from / 8) << 4) + (to / 8); |
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[0] | 49 | |
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[845] | 50 | switch (format) { |
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| 51 | case 0x12: return roar_conv_bits_8to16(out, in, samples); |
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| 52 | case 0x14: return roar_conv_bits_8to32(out, in, samples); |
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| 53 | case 0x21: return roar_conv_bits_16to8(out, in, samples); |
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| 54 | case 0x24: return roar_conv_bits_16to32(out, in, samples); |
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| 55 | case 0x41: return roar_conv_bits_32to8(out, in, samples); |
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| 56 | case 0x42: return roar_conv_bits_32to16(out, in, samples); |
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| 57 | default: |
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| 58 | errno = ENOSYS; |
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| 59 | return -1; |
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| 60 | } |
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[0] | 61 | |
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| 62 | return -1; |
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| 63 | } |
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| 64 | |
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| 65 | int roar_conv_bits_8to16 (void * out, void * in, int samples) { |
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| 66 | char * ip = (char *)in; |
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| 67 | int16_t * op = (int16_t*)out; |
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| 68 | int i; |
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| 69 | |
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| 70 | for (i = samples - 1; i >= 0; i--) |
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| 71 | op[i] = ip[i] << 8; |
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| 72 | |
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| 73 | return 0; |
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| 74 | } |
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| 75 | |
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[845] | 76 | int roar_conv_bits_8to32 (void * out, void * in, int samples) { |
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| 77 | char * ip = (char *)in; |
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| 78 | int32_t * op = (int32_t*)out; |
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| 79 | int i; |
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| 80 | |
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| 81 | for (i = samples - 1; i >= 0; i--) |
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| 82 | op[i] = ip[i] << 24; |
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| 83 | |
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| 84 | return 0; |
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| 85 | } |
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| 86 | |
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[0] | 87 | int roar_conv_bits_16to8 (void * out, void * in, int samples) { |
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| 88 | int16_t * ip = (int16_t*)in; |
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| 89 | char * op = (char *)out; |
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| 90 | int i; |
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| 91 | |
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[624] | 92 | ROAR_DBG("roar_conv_bits_16to8(out=%p, in=%p, samples=%i) = ?", out, in, samples); |
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| 93 | |
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[0] | 94 | for (i = 0; i < samples; i++) |
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| 95 | op[i] = ip[i] >> 8; |
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| 96 | |
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| 97 | return 0; |
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| 98 | } |
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| 99 | |
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[845] | 100 | int roar_conv_bits_16to32 (void * out, void * in, int samples) { |
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| 101 | int16_t * ip = (int16_t*)in; |
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| 102 | int32_t * op = (int32_t*)out; |
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| 103 | int i; |
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| 104 | |
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| 105 | for (i = samples - 1; i >= 0; i--) |
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| 106 | op[i] = ip[i] << 16; |
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| 107 | |
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| 108 | return 0; |
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| 109 | } |
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| 110 | |
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| 111 | int roar_conv_bits_32to8 (void * out, void * in, int samples) { |
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| 112 | int32_t * ip = (int32_t*)in; |
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| 113 | char * op = (char *)out; |
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| 114 | int i; |
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| 115 | |
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| 116 | for (i = 0; i < samples; i++) |
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| 117 | op[i] = ip[i] >> 24; |
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| 118 | |
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| 119 | return 0; |
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| 120 | } |
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| 121 | |
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| 122 | int roar_conv_bits_32to16 (void * out, void * in, int samples) { |
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| 123 | int32_t * ip = (int32_t*)in; |
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| 124 | int16_t * op = (int16_t*)out; |
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| 125 | int i; |
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| 126 | |
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| 127 | for (i = 0; i < samples; i++) |
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| 128 | op[i] = ip[i] >> 16; |
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| 129 | |
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| 130 | return 0; |
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| 131 | } |
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[0] | 132 | |
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| 133 | int roar_conv_chans (void * out, void * in, int samples, int from, int to, int bits) { |
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| 134 | if ( from == 1 ) { |
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| 135 | if ( bits == 8 ) { |
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| 136 | return roar_conv_chans_1ton8(out, in, samples, to); |
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| 137 | } else if ( bits == 16 ) { |
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| 138 | return roar_conv_chans_1ton16(out, in, samples, to); |
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| 139 | } else { |
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| 140 | return -1; |
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| 141 | } |
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[624] | 142 | } else if ( to == 1 ) { |
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| 143 | if ( bits == 8 ) { |
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[626] | 144 | return roar_conv_chans_nto18(out, in, samples, from); |
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[624] | 145 | } else if ( bits == 16 ) { |
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| 146 | return roar_conv_chans_nto116(out, in, samples, from); |
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| 147 | } else { |
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| 148 | return -1; |
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| 149 | } |
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[0] | 150 | } |
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| 151 | |
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| 152 | return -1; |
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| 153 | } |
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| 154 | |
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| 155 | int roar_conv_chans_1ton8 (void * out, void * in, int samples, int to) { |
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| 156 | char * ip = (char*) in, * op = (char*) out; |
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| 157 | int i; |
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| 158 | int c; |
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| 159 | |
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| 160 | for (i = samples - 1; i >= 0; i--) |
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| 161 | for (c = to - 1; c >= 0; c--) |
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| 162 | op[i*to + c] = ip[i]; |
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| 163 | |
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| 164 | return 0; |
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| 165 | } |
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| 166 | |
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| 167 | int roar_conv_chans_1ton16 (void * out, void * in, int samples, int to) { |
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| 168 | int16_t * ip = (int16_t*) in, * op = (int16_t*) out; |
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| 169 | int i; |
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| 170 | int c; |
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| 171 | |
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| 172 | for (i = samples - 1; i >= 0; i--) |
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| 173 | for (c = to - 1; c >= 0; c--) |
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| 174 | op[i*to + c] = ip[i]; |
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| 175 | |
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| 176 | return 0; |
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| 177 | } |
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| 178 | |
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[626] | 179 | int roar_conv_chans_nto18 (void * out, void * in, int samples, int from) { |
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| 180 | int8_t * ip = (int8_t*) in, * op = (int8_t*) out; |
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| 181 | int i; |
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| 182 | int c; |
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| 183 | register int s; |
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| 184 | |
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| 185 | samples /= from; |
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| 186 | |
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| 187 | for (i = samples - 1; i >= 0; i--) { |
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| 188 | s = 0; |
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| 189 | |
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| 190 | for (c = 0; c < from; c++) |
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| 191 | s += ip[i*from + c]; |
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| 192 | |
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| 193 | s /= from; |
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| 194 | op[i] = s; |
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| 195 | } |
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| 196 | |
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| 197 | return 0; |
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| 198 | } |
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| 199 | |
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[624] | 200 | int roar_conv_chans_nto116 (void * out, void * in, int samples, int from) { |
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| 201 | int16_t * ip = (int16_t*) in, * op = (int16_t*) out; |
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| 202 | int i; |
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| 203 | int c; |
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| 204 | register int s; |
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| 205 | |
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| 206 | samples /= from; |
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| 207 | |
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| 208 | for (i = samples - 1; i >= 0; i--) { |
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| 209 | s = 0; |
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| 210 | |
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| 211 | for (c = 0; c < from; c++) |
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| 212 | s += ip[i*from + c]; |
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| 213 | |
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| 214 | s /= from; |
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| 215 | op[i] = s; |
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| 216 | } |
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| 217 | |
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| 218 | return 0; |
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| 219 | } |
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| 220 | |
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[0] | 221 | int roar_conv_rate (void * out, void * in, int samples, int from, int to, int bits, int channels) { |
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| 222 | if ( bits == 8 ) |
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| 223 | return roar_conv_rate_8(out, in, samples, from, to, channels); |
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| 224 | |
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| 225 | if ( bits == 16 ) |
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| 226 | return roar_conv_rate_16(out, in, samples, from, to, channels); |
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| 227 | |
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| 228 | return -1; |
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| 229 | } |
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| 230 | |
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| 231 | int roar_conv_rate_8 (void * out, void * in, int samples, int from, int to, int channels) { |
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| 232 | return -1; |
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| 233 | } |
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[33] | 234 | |
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[0] | 235 | int roar_conv_rate_16 (void * out, void * in, int samples, int from, int to, int channels) { |
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[386] | 236 | if ( channels == 1 ) { |
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| 237 | printf("roar_conv_rate_16(): samples=%i -> %i, rate=%i -> %i\n", samples*from/to, samples, from, to); |
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| 238 | return roar_conv_poly4_16s((int16_t*) out, (int16_t*) in, samples, samples*from/to, (float)from/to); |
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| 239 | // return roar_conv_poly4_16((int16_t*) out, (int16_t*) in, samples*to/from, samples); |
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| 240 | } |
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| 241 | |
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[0] | 242 | return -1; |
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| 243 | } |
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| 244 | |
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| 245 | int raor_conv_codec (void * out, void * in, int samples, int from, int to, int bits) { |
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| 246 | int inbo = ROAR_CODEC_BYTE_ORDER(from), outbo = ROAR_CODEC_BYTE_ORDER(to); |
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| 247 | int ins = ROAR_CODEC_IS_SIGNED(from), outs = ROAR_CODEC_IS_SIGNED(to); |
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| 248 | |
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| 249 | if ( inbo != outbo ) |
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| 250 | return -1; |
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| 251 | |
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| 252 | if ( ins != outs ) { |
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| 253 | if ( ins && !outs ) { |
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[846] | 254 | switch (bits) { |
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| 255 | case 8: roar_conv_codec_s2u8(out, in, samples); break; |
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| 256 | case 16: roar_conv_codec_s2u16(out, in, samples); break; |
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| 257 | case 32: roar_conv_codec_s2u16(out, in, samples); break; |
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| 258 | default: |
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| 259 | errno = ENOSYS; |
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| 260 | return -1; |
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| 261 | } |
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| 262 | } else if ( !ins && outs ) { |
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| 263 | switch (bits) { |
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| 264 | case 8: roar_conv_codec_u2s8(out, in, samples); break; |
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| 265 | case 16: roar_conv_codec_u2s16(out, in, samples); break; |
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| 266 | case 32: roar_conv_codec_u2s16(out, in, samples); break; |
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| 267 | default: |
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| 268 | errno = ENOSYS; |
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| 269 | return -1; |
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[0] | 270 | } |
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| 271 | } else { |
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| 272 | return -1; |
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| 273 | } |
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| 274 | } |
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| 275 | |
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| 276 | return 0; |
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| 277 | } |
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| 278 | |
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| 279 | int roar_conv_codec_s2u8 (void * out, void * in, int samples) { |
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| 280 | char * ip = in; |
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| 281 | unsigned char * op = out; |
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| 282 | int i; |
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| 283 | |
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| 284 | for(i = 0; i < samples; i++) |
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| 285 | op[i] = ip[i] + 128; |
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| 286 | |
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| 287 | return 0; |
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| 288 | } |
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| 289 | |
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[633] | 290 | int roar_conv_codec_s2u16 (void * out, void * in, int samples) { |
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| 291 | int16_t * ip = in; |
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| 292 | uint16_t * op = out; |
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| 293 | int i; |
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| 294 | |
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| 295 | for(i = 0; i < samples; i++) |
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| 296 | op[i] = ip[i] + 32768; |
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| 297 | |
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| 298 | return 0; |
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| 299 | } |
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[0] | 300 | |
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[846] | 301 | int roar_conv_codec_s2u32 (void * out, void * in, int samples) { |
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| 302 | int32_t * ip = in; |
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| 303 | uint32_t * op = out; |
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| 304 | int i; |
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| 305 | |
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| 306 | for(i = 0; i < samples; i++) |
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| 307 | op[i] = ip[i] + 2147483648U; |
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| 308 | |
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| 309 | return 0; |
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| 310 | } |
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| 311 | |
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| 312 | int roar_conv_codec_u2s8 (void * out, void * in, int samples) { |
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| 313 | unsigned char * ip = in; |
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| 314 | char * op = out; |
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| 315 | int i; |
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| 316 | |
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| 317 | for(i = 0; i < samples; i++) |
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| 318 | op[i] = ip[i] - 128; |
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| 319 | |
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| 320 | return 0; |
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| 321 | } |
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| 322 | |
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| 323 | int roar_conv_codec_u2s16 (void * out, void * in, int samples) { |
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| 324 | uint16_t * ip = in; |
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| 325 | int16_t * op = out; |
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| 326 | int i; |
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| 327 | |
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| 328 | for(i = 0; i < samples; i++) |
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| 329 | op[i] = ip[i] - 32768; |
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| 330 | |
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| 331 | return 0; |
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| 332 | } |
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| 333 | |
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| 334 | int roar_conv_codec_u2s32 (void * out, void * in, int samples) { |
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| 335 | uint32_t * ip = in; |
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| 336 | int32_t * op = out; |
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| 337 | int i; |
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| 338 | |
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| 339 | for(i = 0; i < samples; i++) |
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| 340 | op[i] = ip[i] - 2147483648U; |
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| 341 | |
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| 342 | return 0; |
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| 343 | } |
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| 344 | |
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[0] | 345 | int roar_conv (void * out, void * in, int samples, struct roar_audio_info * from, struct roar_audio_info * to) { |
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| 346 | void * ip = in; |
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| 347 | |
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| 348 | // TODO: decide how to work around both in and out beeing to small to hold all |
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| 349 | // data between the steps. |
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| 350 | // for the moment: guess out >= in |
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| 351 | |
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| 352 | if ( from->bits != to->bits ) { |
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| 353 | if ( roar_conv_bits(out, ip, samples, from->bits, to->bits) == -1 ) |
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| 354 | return -1; |
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| 355 | else |
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| 356 | ip = out; |
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| 357 | } |
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| 358 | |
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[386] | 359 | if ( from->rate != to->rate ) { |
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| 360 | if ( roar_conv_rate(out, ip, samples, from->rate, to->rate, to->bits, from->channels) == -1 ) |
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[0] | 361 | return -1; |
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| 362 | else |
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| 363 | ip = out; |
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| 364 | } |
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| 365 | |
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[386] | 366 | if ( from->channels != to->channels ) { |
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| 367 | if ( roar_conv_chans(out, ip, samples, from->channels, to->channels, to->bits) == -1 ) |
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[0] | 368 | return -1; |
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| 369 | else |
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| 370 | ip = out; |
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| 371 | } |
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| 372 | |
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[629] | 373 | if ( from->codec != to->codec ) { |
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| 374 | if ( raor_conv_codec (out, ip, samples, from->codec, to->codec, to->bits) == -1 ) |
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| 375 | return -1; |
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| 376 | else |
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| 377 | ip = out; |
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| 378 | } |
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[0] | 379 | |
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| 380 | return 0; |
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| 381 | } |
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| 382 | |
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[383] | 383 | |
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| 384 | |
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| 385 | int roar_conv_poly4_16 (int16_t * out, int16_t * in, size_t olen, size_t ilen) { |
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[386] | 386 | return roar_conv_poly4_16s(out, in, olen, ilen, (float)ilen/olen); |
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| 387 | } |
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| 388 | |
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| 389 | int roar_conv_poly4_16s (int16_t * out, int16_t * in, size_t olen, size_t ilen, float step) { |
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[383] | 390 | float poly[4]; |
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| 391 | float data[4]; |
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| 392 | float t = 0; |
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| 393 | int16_t * ci = in; |
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| 394 | int io, ii = 0; |
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| 395 | int i; |
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| 396 | |
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[386] | 397 | printf("step=%f\n", step); |
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| 398 | |
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[383] | 399 | // we can not make a poly4 with less than 4 points ;) |
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| 400 | if ( ilen < 4 ) |
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| 401 | return -1; |
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| 402 | |
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| 403 | for (i = 0; i < 4; i++) |
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| 404 | data[i] = ci[i]; |
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| 405 | roar_math_mkpoly_4x4(poly, data); |
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| 406 | /* |
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| 407 | printf("new poly: data[4] = {%f, %f, %f, %f}, poly[4] = {%f, %f, %f, %f}\n", |
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| 408 | data[0], data[1], data[2], data[3], |
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| 409 | poly[0], poly[1], poly[2], poly[3] |
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| 410 | ); |
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| 411 | */ |
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| 412 | |
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| 413 | //0 1 2 3 |
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| 414 | |
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| 415 | for (io = 0; io < olen; io++) { |
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| 416 | // printf("t=%f\n", t); |
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| 417 | out[io] = roar_math_cvpoly_4x4(poly, t); |
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| 418 | t += step; |
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| 419 | if ( t > 2 ) { // we need a new ploynome |
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| 420 | // printf("t > 2, need new data\n"); |
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| 421 | if ( (ii + 4) < ilen ) { // else: end of block. |
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| 422 | t -= 1; |
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| 423 | // printf("new data: ii=%i\n", ii); |
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| 424 | ii++; |
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| 425 | ci++; |
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| 426 | for (i = 0; i < 4; i++) |
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| 427 | data[i] = ci[i]; |
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| 428 | roar_math_mkpoly_4x4(poly, data); |
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| 429 | /* |
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| 430 | printf("new poly: data[4] = {%f, %f, %f, %f}, poly[4] = {%f, %f, %f, %f}\n", |
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| 431 | data[0], data[1], data[2], data[3], |
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| 432 | poly[0], poly[1], poly[2], poly[3] |
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| 433 | ); |
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| 434 | */ |
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| 435 | } |
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| 436 | } |
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| 437 | } |
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| 438 | |
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[386] | 439 | printf("io=%i\n", io); |
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| 440 | |
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[383] | 441 | return 0; |
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| 442 | } |
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| 443 | |
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[0] | 444 | //ll |
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