1 | //para.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009 |
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5 | * The code (may) include prototypes and comments (and maybe |
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6 | * other code fragements) from EsounD. |
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7 | * They are mostly copyrighted by Eric B. Mitchell (aka 'Ricdude) |
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8 | * <ericmit@ix.netcom.com>. For more information see AUTHORS.esd. |
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9 | * |
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10 | * This file is part of libroaresd a part of RoarAudio, |
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11 | * a cross-platform sound system for both, home and professional use. |
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12 | * See README for details. |
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13 | * |
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14 | * This file is free software; you can redistribute it and/or modify |
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15 | * it under the terms of the GNU General Public License version 3 |
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16 | * as published by the Free Software Foundation. |
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17 | * |
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18 | * RoarAudio is distributed in the hope that it will be useful, |
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19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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21 | * GNU General Public License for more details. |
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22 | * |
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23 | * You should have received a copy of the GNU General Public License |
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24 | * along with this software; see the file COPYING. If not, write to |
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25 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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26 | * |
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27 | * NOTE for everyone want's to change something and send patches: |
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28 | * read README and HACKING! There a addition information on |
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29 | * the license of this document you need to read before you send |
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30 | * any patches. |
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31 | */ |
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32 | |
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33 | #define ROAR_USE_OWN_SNDIO_HDL |
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34 | #include "libroarsndio.h" |
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35 | |
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36 | //#ifndef DEBUG |
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37 | //#define DEBUG |
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38 | //#endif |
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39 | |
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40 | void sio_initpar(struct sio_par * par) { |
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41 | if ( par == NULL ) |
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42 | return; |
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43 | |
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44 | memset(par, 0, sizeof(struct sio_par)); |
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45 | |
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46 | par->bits = ROAR_BITS_DEFAULT; |
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47 | par->sig = 1; |
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48 | par->le = SIO_LE_NATIVE; |
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49 | par->msb = 1; |
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50 | par->rchan = 0; |
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51 | par->pchan = ROAR_CHANNELS_DEFAULT; |
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52 | par->rate = ROAR_RATE_DEFAULT; |
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53 | par->bufsz = ROAR_BITS_DEFAULT * ROAR_CHANNELS_DEFAULT * ROAR_RATE_DEFAULT / 800.0; |
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54 | par->round = 1; |
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55 | par->xrun = SIO_IGNORE; |
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56 | |
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57 | return; |
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58 | } |
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59 | |
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60 | int sio_setpar (struct sio_hdl * hdl, struct sio_par * par) { |
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61 | if ( hdl == NULL || par == NULL ) { |
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62 | ROAR_DBG("sio_setpar(*): Invalid handle or parameter pointer"); |
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63 | return 0; |
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64 | } |
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65 | |
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66 | if ( par->bits == 0 || par->bits > ROAR_BITS_MAX ) { |
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67 | ROAR_DBG("sio_setpar(*): Invalid number of bits: %i Bit", par->bits); |
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68 | return 0; |
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69 | } |
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70 | |
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71 | if ( par->bps == 0 ) |
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72 | par->bps = SIO_BPS(par->bits); |
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73 | |
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74 | if ( par->bps > ROAR_BITS_MAX/8 ) { |
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75 | ROAR_DBG("sio_setpar(*): Invalid number of bytes: %i Byte", par->bps); |
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76 | return 0; |
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77 | } |
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78 | |
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79 | if ( SIO_BPS(par->bits) > par->bps ) { |
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80 | ROAR_DBG("sio_setpar(*): Number of bits/8 > number of bytes: %i/8 > %i", par->bits, par->bps); |
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81 | return 0; |
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82 | } |
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83 | |
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84 | hdl->info.bits = par->bps * 8; |
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85 | |
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86 | switch ((par->sig << 4) | par->le) { |
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87 | case 0x00: |
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88 | hdl->info.codec = ROAR_CODEC_PCM_U_BE; |
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89 | break; |
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90 | case 0x01: |
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91 | hdl->info.codec = ROAR_CODEC_PCM_U_LE; |
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92 | break; |
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93 | case 0x10: |
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94 | hdl->info.codec = ROAR_CODEC_PCM_S_BE; |
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95 | break; |
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96 | case 0x11: |
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97 | hdl->info.codec = ROAR_CODEC_PCM_S_LE; |
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98 | break; |
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99 | default: |
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100 | ROAR_DBG("sio_setpar(*): Invalid codec: sig=%i, le=%i", par->sig, par->le); |
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101 | return 0; |
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102 | } |
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103 | |
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104 | if ( par->msb == 0 ) { |
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105 | ROAR_DBG("sio_setpar(*): LSM alignment not supported"); |
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106 | return 0; |
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107 | } |
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108 | |
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109 | if ( par->rchan != 0 ) { /* not supported yet */ |
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110 | ROAR_DBG("sio_setpar(*): Recording not supported"); |
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111 | return 0; |
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112 | } |
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113 | |
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114 | if ( par->pchan == 0 || par->pchan > ROAR_MAX_CHANNELS ) { |
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115 | ROAR_DBG("sio_setpar(*): Invalid number of playback channels: %i", par->pchan); |
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116 | return 0; |
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117 | } |
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118 | |
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119 | hdl->info.channels = par->pchan; |
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120 | |
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121 | if ( par->rate == 0 ) { |
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122 | ROAR_DBG("sio_setpar(*): Invalid sample rate: %iHz", par->rate); |
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123 | return 0; |
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124 | } |
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125 | |
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126 | hdl->info.rate = par->rate; |
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127 | |
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128 | if ( par->xrun != SIO_IGNORE ) { |
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129 | ROAR_DBG("sio_setpar(*): Unsupported xrun mode: %i", par->xrun); |
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130 | return 0; |
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131 | } |
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132 | |
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133 | memcpy(&(hdl->para), par, sizeof(struct sio_par)); |
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134 | |
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135 | return 1; |
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136 | } |
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137 | |
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138 | int sio_getpar (struct sio_hdl * hdl, struct sio_par * par) { |
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139 | if ( hdl == NULL || par == NULL ) |
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140 | return 0; |
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141 | |
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142 | memcpy(par, &(hdl->para), sizeof(struct sio_par)); |
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143 | |
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144 | return 1; |
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145 | } |
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146 | |
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147 | int sio_getcap (struct sio_hdl * hdl, struct sio_cap * cap) { |
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148 | return 0; |
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149 | } |
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150 | |
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151 | |
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152 | //ll |
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