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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 | #ifndef __SOUND_CS8403_H #define __SOUND_CS8403_H /* * Routines for Cirrus Logic CS8403/CS8404A IEC958 (S/PDIF) Transmitter * Copyright (c) by Jaroslav Kysela <perex@perex.cz>, * Takashi Iwai <tiwai@suse.de> * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #ifdef SND_CS8403 #ifndef SND_CS8403_DECL #define SND_CS8403_DECL static #endif #ifndef SND_CS8403_DECODE #define SND_CS8403_DECODE snd_cs8403_decode_spdif_bits #endif #ifndef SND_CS8403_ENCODE #define SND_CS8403_ENCODE snd_cs8403_encode_spdif_bits #endif SND_CS8403_DECL void SND_CS8403_DECODE(struct snd_aes_iec958 *diga, unsigned char bits) { if (bits & 0x01) { /* consumer */ if (!(bits & 0x02)) diga->status[0] |= IEC958_AES0_NONAUDIO; if (!(bits & 0x08)) diga->status[0] |= IEC958_AES0_CON_NOT_COPYRIGHT; switch (bits & 0x10) { case 0x10: diga->status[0] |= IEC958_AES0_CON_EMPHASIS_NONE; break; case 0x00: diga->status[0] |= IEC958_AES0_CON_EMPHASIS_5015; break; } if (!(bits & 0x80)) diga->status[1] |= IEC958_AES1_CON_ORIGINAL; switch (bits & 0x60) { case 0x00: diga->status[1] |= IEC958_AES1_CON_MAGNETIC_ID; break; case 0x20: diga->status[1] |= IEC958_AES1_CON_DIGDIGCONV_ID; break; case 0x40: diga->status[1] |= IEC958_AES1_CON_LASEROPT_ID; break; case 0x60: diga->status[1] |= IEC958_AES1_CON_GENERAL; break; } switch (bits & 0x06) { case 0x00: diga->status[3] |= IEC958_AES3_CON_FS_44100; break; case 0x02: diga->status[3] |= IEC958_AES3_CON_FS_48000; break; case 0x04: diga->status[3] |= IEC958_AES3_CON_FS_32000; break; } } else { diga->status[0] = IEC958_AES0_PROFESSIONAL; switch (bits & 0x18) { case 0x00: diga->status[0] |= IEC958_AES0_PRO_FS_32000; break; case 0x10: diga->status[0] |= IEC958_AES0_PRO_FS_44100; break; case 0x08: diga->status[0] |= IEC958_AES0_PRO_FS_48000; break; case 0x18: diga->status[0] |= IEC958_AES0_PRO_FS_NOTID; break; } switch (bits & 0x60) { case 0x20: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NONE; break; case 0x40: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_5015; break; case 0x00: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_CCITT; break; case 0x60: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NOTID; break; } if (bits & 0x80) diga->status[1] |= IEC958_AES1_PRO_MODE_STEREOPHONIC; } } SND_CS8403_DECL unsigned char SND_CS8403_ENCODE(struct snd_aes_iec958 *diga) { unsigned char bits; if (!(diga->status[0] & IEC958_AES0_PROFESSIONAL)) { bits = 0x01; /* consumer mode */ if (diga->status[0] & IEC958_AES0_NONAUDIO) bits &= ~0x02; else bits |= 0x02; if (diga->status[0] & IEC958_AES0_CON_NOT_COPYRIGHT) bits &= ~0x08; else bits |= 0x08; switch (diga->status[0] & IEC958_AES0_CON_EMPHASIS) { default: case IEC958_AES0_CON_EMPHASIS_NONE: bits |= 0x10; break; case IEC958_AES0_CON_EMPHASIS_5015: bits |= 0x00; break; } if (diga->status[1] & IEC958_AES1_CON_ORIGINAL) bits &= ~0x80; else bits |= 0x80; if ((diga->status[1] & IEC958_AES1_CON_CATEGORY) == IEC958_AES1_CON_GENERAL) bits |= 0x60; else { switch(diga->status[1] & IEC958_AES1_CON_MAGNETIC_MASK) { case IEC958_AES1_CON_MAGNETIC_ID: bits |= 0x00; break; case IEC958_AES1_CON_DIGDIGCONV_ID: bits |= 0x20; break; default: case IEC958_AES1_CON_LASEROPT_ID: bits |= 0x40; break; } } switch (diga->status[3] & IEC958_AES3_CON_FS) { default: case IEC958_AES3_CON_FS_44100: bits |= 0x00; break; case IEC958_AES3_CON_FS_48000: bits |= 0x02; break; case IEC958_AES3_CON_FS_32000: bits |= 0x04; break; } } else { bits = 0x00; /* professional mode */ if (diga->status[0] & IEC958_AES0_NONAUDIO) bits &= ~0x02; else bits |= 0x02; /* CHECKME: I'm not sure about the bit order in val here */ switch (diga->status[0] & IEC958_AES0_PRO_FS) { case IEC958_AES0_PRO_FS_32000: bits |= 0x00; break; case IEC958_AES0_PRO_FS_44100: bits |= 0x10; break; /* 44.1kHz */ case IEC958_AES0_PRO_FS_48000: bits |= 0x08; break; /* 48kHz */ default: case IEC958_AES0_PRO_FS_NOTID: bits |= 0x18; break; } switch (diga->status[0] & IEC958_AES0_PRO_EMPHASIS) { case IEC958_AES0_PRO_EMPHASIS_NONE: bits |= 0x20; break; case IEC958_AES0_PRO_EMPHASIS_5015: bits |= 0x40; break; case IEC958_AES0_PRO_EMPHASIS_CCITT: bits |= 0x00; break; default: case IEC958_AES0_PRO_EMPHASIS_NOTID: bits |= 0x60; break; } switch (diga->status[1] & IEC958_AES1_PRO_MODE) { case IEC958_AES1_PRO_MODE_TWO: case IEC958_AES1_PRO_MODE_STEREOPHONIC: bits |= 0x00; break; default: bits |= 0x80; break; } } return bits; } #endif /* SND_CS8403 */ #ifdef SND_CS8404 #ifndef SND_CS8404_DECL #define SND_CS8404_DECL static #endif #ifndef SND_CS8404_DECODE #define SND_CS8404_DECODE snd_cs8404_decode_spdif_bits #endif #ifndef SND_CS8404_ENCODE #define SND_CS8404_ENCODE snd_cs8404_encode_spdif_bits #endif SND_CS8404_DECL void SND_CS8404_DECODE(struct snd_aes_iec958 *diga, unsigned char bits) { if (bits & 0x10) { /* consumer */ if (!(bits & 0x20)) diga->status[0] |= IEC958_AES0_CON_NOT_COPYRIGHT; if (!(bits & 0x40)) diga->status[0] |= IEC958_AES0_CON_EMPHASIS_5015; if (!(bits & 0x80)) diga->status[1] |= IEC958_AES1_CON_ORIGINAL; switch (bits & 0x03) { case 0x00: diga->status[1] |= IEC958_AES1_CON_DAT; break; case 0x03: diga->status[1] |= IEC958_AES1_CON_GENERAL; break; } switch (bits & 0x06) { case 0x02: diga->status[3] |= IEC958_AES3_CON_FS_32000; break; case 0x04: diga->status[3] |= IEC958_AES3_CON_FS_48000; break; case 0x06: diga->status[3] |= IEC958_AES3_CON_FS_44100; break; } } else { diga->status[0] = IEC958_AES0_PROFESSIONAL; if (!(bits & 0x04)) diga->status[0] |= IEC958_AES0_NONAUDIO; switch (bits & 0x60) { case 0x00: diga->status[0] |= IEC958_AES0_PRO_FS_32000; break; case 0x40: diga->status[0] |= IEC958_AES0_PRO_FS_44100; break; case 0x20: diga->status[0] |= IEC958_AES0_PRO_FS_48000; break; case 0x60: diga->status[0] |= IEC958_AES0_PRO_FS_NOTID; break; } switch (bits & 0x03) { case 0x02: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NONE; break; case 0x01: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_5015; break; case 0x00: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_CCITT; break; case 0x03: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NOTID; break; } if (!(bits & 0x80)) diga->status[1] |= IEC958_AES1_PRO_MODE_STEREOPHONIC; } } SND_CS8404_DECL unsigned char SND_CS8404_ENCODE(struct snd_aes_iec958 *diga) { unsigned char bits; if (!(diga->status[0] & IEC958_AES0_PROFESSIONAL)) { bits = 0x10; /* consumer mode */ if (!(diga->status[0] & IEC958_AES0_CON_NOT_COPYRIGHT)) bits |= 0x20; if ((diga->status[0] & IEC958_AES0_CON_EMPHASIS) == IEC958_AES0_CON_EMPHASIS_NONE) bits |= 0x40; if (!(diga->status[1] & IEC958_AES1_CON_ORIGINAL)) bits |= 0x80; if ((diga->status[1] & IEC958_AES1_CON_CATEGORY) == IEC958_AES1_CON_GENERAL) bits |= 0x03; switch (diga->status[3] & IEC958_AES3_CON_FS) { default: case IEC958_AES3_CON_FS_44100: bits |= 0x06; break; case IEC958_AES3_CON_FS_48000: bits |= 0x04; break; case IEC958_AES3_CON_FS_32000: bits |= 0x02; break; } } else { bits = 0x00; /* professional mode */ if (!(diga->status[0] & IEC958_AES0_NONAUDIO)) bits |= 0x04; switch (diga->status[0] & IEC958_AES0_PRO_FS) { case IEC958_AES0_PRO_FS_32000: bits |= 0x00; break; case IEC958_AES0_PRO_FS_44100: bits |= 0x40; break; /* 44.1kHz */ case IEC958_AES0_PRO_FS_48000: bits |= 0x20; break; /* 48kHz */ default: case IEC958_AES0_PRO_FS_NOTID: bits |= 0x00; break; } switch (diga->status[0] & IEC958_AES0_PRO_EMPHASIS) { case IEC958_AES0_PRO_EMPHASIS_NONE: bits |= 0x02; break; case IEC958_AES0_PRO_EMPHASIS_5015: bits |= 0x01; break; case IEC958_AES0_PRO_EMPHASIS_CCITT: bits |= 0x00; break; default: case IEC958_AES0_PRO_EMPHASIS_NOTID: bits |= 0x03; break; } switch (diga->status[1] & IEC958_AES1_PRO_MODE) { case IEC958_AES1_PRO_MODE_TWO: case IEC958_AES1_PRO_MODE_STEREOPHONIC: bits |= 0x00; break; default: bits |= 0x80; break; } } return bits; } #endif /* SND_CS8404 */ #endif /* __SOUND_CS8403_H */ |