[1562] | 1 | //para.c: |
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[1559] | 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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[1571] | 33 | #define ROAR_USE_OWN_SNDIO_HDL |
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[1559] | 34 | #include "libroarsndio.h" |
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| 35 | |
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[1584] | 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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[1562] | 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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[1584] | 61 | if ( hdl == NULL || par == NULL ) { |
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| 62 | ROAR_DBG("sio_setpar(*): Invalid handle or parameter pointer"); |
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[1566] | 63 | return 0; |
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[1584] | 64 | } |
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[1566] | 65 | |
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[1584] | 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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[1566] | 68 | return 0; |
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[1584] | 69 | } |
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[1566] | 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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[1584] | 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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[1566] | 76 | return 0; |
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[1584] | 77 | } |
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[1566] | 78 | |
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[1584] | 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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[1566] | 81 | return 0; |
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[1584] | 82 | } |
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[1566] | 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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[1584] | 100 | ROAR_DBG("sio_setpar(*): Invalid codec: sig=%i, le=%i", par->sig, par->le); |
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[1566] | 101 | return 0; |
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| 102 | } |
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| 103 | |
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[1584] | 104 | if ( par->msb == 0 ) { |
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| 105 | ROAR_DBG("sio_setpar(*): LSM alignment not supported"); |
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[1566] | 106 | return 0; |
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[1584] | 107 | } |
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[1566] | 108 | |
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[1584] | 109 | if ( par->rchan != 0 ) { /* not supported yet */ |
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| 110 | ROAR_DBG("sio_setpar(*): Recording not supported"); |
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[1566] | 111 | return 0; |
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[1584] | 112 | } |
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[1566] | 113 | |
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[1584] | 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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[1566] | 116 | return 0; |
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[1584] | 117 | } |
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[1566] | 118 | |
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| 119 | hdl->info.channels = par->pchan; |
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| 120 | |
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[1584] | 121 | if ( par->rate == 0 ) { |
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| 122 | ROAR_DBG("sio_setpar(*): Invalid sample rate: %iHz", par->rate); |
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[1566] | 123 | return 0; |
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[1584] | 124 | } |
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[1566] | 125 | |
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| 126 | hdl->info.rate = par->rate; |
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| 127 | |
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[1584] | 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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[1566] | 130 | return 0; |
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[1584] | 131 | } |
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[1566] | 132 | |
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[1576] | 133 | memcpy(&(hdl->para), par, sizeof(struct sio_par)); |
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| 134 | |
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[1566] | 135 | return 1; |
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[1562] | 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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[1576] | 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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[1562] | 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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[1559] | 152 | //ll |
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