[4373] | 1 | //hwmixer_oss.c: |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010 |
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| 5 | * |
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| 6 | * This file is part of roard 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 | * RoarAudio 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, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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| 23 | * |
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| 24 | */ |
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| 25 | |
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| 26 | #include "roard.h" |
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| 27 | |
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| 28 | #define OSS_VOLUME_SCALE 100 |
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| 29 | |
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| 30 | struct subdev { |
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| 31 | int bit; |
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| 32 | int channels; |
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| 33 | long long int cmd_read, cmd_write; |
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| 34 | }; |
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| 35 | |
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[4388] | 36 | static struct subdev_map { |
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| 37 | const char * name; |
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| 38 | struct subdev subdev; |
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| 39 | } g_subdevs[] = { |
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| 40 | {"Volume", {.bit = SOUND_MASK_VOLUME, .cmd_read = SOUND_MIXER_READ_VOLUME, .cmd_write = SOUND_MIXER_WRITE_VOLUME}}, |
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[4389] | 41 | {"PCM", {.bit = SOUND_MASK_PCM, .cmd_read = SOUND_MIXER_READ_PCM, .cmd_write = SOUND_MIXER_WRITE_PCM}}, |
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[4388] | 42 | {NULL} |
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| 43 | }; |
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| 44 | |
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| 45 | static int hwmixer_oss_open_stream(struct hwmixer_stream * stream, int devmask, int sdevmask, char * basename, struct roar_keyval * subname) { |
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| 46 | struct subdev * subdev; |
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| 47 | struct subdev * source_subdev = NULL; |
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| 48 | struct roar_stream_server * ss; |
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[4389] | 49 | const char * reqname = subname->value; |
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[4388] | 50 | int i; |
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[4389] | 51 | char name[80]; |
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[4388] | 52 | |
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| 53 | for (i = 0; g_subdevs[i].name != NULL; i++) { |
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| 54 | if ( !strcasecmp(subname->key, g_subdevs[i].name) ) { |
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| 55 | source_subdev = &(g_subdevs[i].subdev); |
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[4389] | 56 | if ( reqname == NULL ) |
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| 57 | reqname = g_subdevs[i].name; |
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[4388] | 58 | break; |
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| 59 | } |
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| 60 | } |
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| 61 | |
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| 62 | if ( source_subdev == NULL ) |
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| 63 | return -1; |
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| 64 | |
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| 65 | if ( !(devmask & source_subdev->bit) ) |
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| 66 | return -1; |
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| 67 | |
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| 68 | subdev = roar_mm_malloc(sizeof(struct subdev)); |
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| 69 | |
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| 70 | if ( subdev == NULL ) |
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| 71 | return -1; |
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| 72 | |
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| 73 | memcpy(subdev, source_subdev, sizeof(struct subdev)); |
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| 74 | |
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| 75 | subdev->channels = sdevmask & subdev->bit ? 2 : 1; |
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| 76 | |
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| 77 | stream->ud = subdev; |
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| 78 | |
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[4389] | 79 | if ( basename == NULL ) { |
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| 80 | streams_set_name(stream->stream, reqname); |
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| 81 | } else { |
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| 82 | snprintf(name, sizeof(name)-1, "%s/%s", basename, reqname); |
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| 83 | name[sizeof(name)-1] = 0; |
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| 84 | streams_set_name(stream->stream, name); |
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| 85 | } |
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| 86 | |
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[4388] | 87 | if (streams_get(stream->stream, &ss) != -1) { |
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| 88 | ROAR_STREAM(ss)->info.channels = subdev->channels; |
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| 89 | } else { |
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| 90 | ROAR_WARN("hwmixer_dstr_open(*): can not get object for stream %i", stream->stream); |
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| 91 | } |
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| 92 | |
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| 93 | return 0; |
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| 94 | } |
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| 95 | |
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[4373] | 96 | int hwmixer_oss_open(struct hwmixer_stream * stream, char * drv, char * dev, int fh, char * basename, struct roar_keyval * subnames, size_t subnamelen) { |
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| 97 | struct roar_vio_calls * vio = roar_mm_malloc(sizeof(struct roar_vio_calls)); |
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| 98 | struct roar_vio_defaults def; |
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| 99 | struct roar_vio_sysio_ioctl ctl; |
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[4388] | 100 | struct roar_keyval kv; |
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[4389] | 101 | struct hwmixer_stream * cstream; |
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[4373] | 102 | int devmask, sdevmask; |
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[4389] | 103 | size_t i; |
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[4373] | 104 | |
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[4388] | 105 | if ( vio == NULL ) { |
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[4373] | 106 | return -1; |
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| 107 | } |
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| 108 | |
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| 109 | if ( fh == -1 ) { |
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[4380] | 110 | #ifdef ROAR_DEFAULT_OSS_MIX_DEV |
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[4373] | 111 | if ( dev == NULL ) { |
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[4380] | 112 | dev = ROAR_DEFAULT_OSS_MIX_DEV; |
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[4373] | 113 | } |
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[4380] | 114 | #endif |
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[4373] | 115 | |
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| 116 | if ( dev == NULL ) { |
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| 117 | roar_mm_free(vio); |
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| 118 | return -1; |
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| 119 | } |
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| 120 | |
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| 121 | if ( roar_vio_dstr_init_defaults(&def, ROAR_VIO_DEF_TYPE_FILE, O_RDWR, 0644) == -1 ) { |
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| 122 | roar_mm_free(vio); |
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| 123 | return -1; |
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| 124 | } |
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| 125 | |
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| 126 | if ( roar_vio_open_dstr(vio, dev, &def, 1) == -1 ) { |
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| 127 | roar_mm_free(vio); |
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| 128 | return -1; |
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| 129 | } |
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| 130 | } else { |
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| 131 | if ( roar_vio_open_fh(vio, fh) == -1 ) { |
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| 132 | roar_mm_free(vio); |
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| 133 | return -1; |
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| 134 | } |
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| 135 | } |
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| 136 | |
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| 137 | stream->baseud = vio; |
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| 138 | |
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| 139 | ctl.cmd = SOUND_MIXER_READ_DEVMASK; |
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| 140 | ctl.argp = &devmask; |
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| 141 | |
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| 142 | if ( roar_vio_ctl(vio, ROAR_VIO_CTL_SYSIO_IOCTL, &ctl) == -1 ) { |
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| 143 | roar_vio_close(vio); |
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| 144 | roar_mm_free(vio); |
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| 145 | return -1; |
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| 146 | } |
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| 147 | |
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| 148 | ctl.cmd = SOUND_MIXER_READ_STEREODEVS; |
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| 149 | ctl.argp = &sdevmask; |
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| 150 | |
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| 151 | if ( roar_vio_ctl(vio, ROAR_VIO_CTL_SYSIO_IOCTL, &ctl) == -1 ) { |
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| 152 | sdevmask = 0; |
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| 153 | } |
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| 154 | |
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[4389] | 155 | if ( subnamelen == 0 ) { |
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| 156 | kv.key = "Volume"; |
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| 157 | kv.value = NULL; |
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[4373] | 158 | |
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[4389] | 159 | if ( hwmixer_oss_open_stream(stream, devmask, sdevmask, basename, &kv) == -1 ) { |
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| 160 | roar_vio_close(vio); |
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| 161 | roar_mm_free(vio); |
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| 162 | return -1; |
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| 163 | } |
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| 164 | } else { |
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| 165 | if ( hwmixer_oss_open_stream(stream, devmask, sdevmask, basename, subnames) == -1 ) { |
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| 166 | roar_vio_close(vio); |
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| 167 | roar_mm_free(vio); |
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| 168 | return -1; |
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| 169 | } |
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| 170 | |
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| 171 | for (i = 1; i < subnamelen; i++) { |
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| 172 | cstream = hwmixer_substream_new(stream); |
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| 173 | if ( hwmixer_oss_open_stream(cstream, devmask, sdevmask, basename, &(subnames[i])) == -1 ) { |
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| 174 | roar_vio_close(vio); |
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| 175 | roar_mm_free(vio); |
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| 176 | return -1; |
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| 177 | } |
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| 178 | } |
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[4373] | 179 | } |
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| 180 | |
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| 181 | |
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| 182 | #ifdef TEST_HWMIXER_SUBSTREAMS |
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| 183 | stream = hwmixer_substream_new(stream); |
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| 184 | if ( stream == NULL ) { |
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| 185 | ROAR_WARN("hwmixer_dstr_open(*): can not create substream"); |
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| 186 | } else { |
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| 187 | if (streams_get(stream->stream, &ss) != -1) { |
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| 188 | ROAR_STREAM(ss)->info.channels = 2; |
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| 189 | } else { |
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| 190 | ROAR_WARN("hwmixer_dstr_open(*): can not get object for stream %i", stream->stream); |
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| 191 | } |
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| 192 | } |
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| 193 | #endif |
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| 194 | |
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| 195 | return 0; |
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| 196 | } |
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| 197 | |
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| 198 | int hwmixer_oss_close(struct hwmixer_stream * stream) { |
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| 199 | // are we a substream? if yes we do not clean up anything. |
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| 200 | // streams_delete() will do all our work. |
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| 201 | |
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| 202 | roar_mm_free(stream->ud); |
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| 203 | |
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| 204 | if ( stream->stream != stream->basestream ) |
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| 205 | return 0; |
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| 206 | |
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| 207 | roar_vio_close(stream->baseud); |
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| 208 | roar_mm_free(stream->baseud); |
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| 209 | return 0; |
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| 210 | } |
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| 211 | |
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| 212 | int hwmixer_oss_set_vol(struct hwmixer_stream * stream, int channels, int mode, struct roar_mixer_settings * settings) { |
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| 213 | struct roar_vio_calls * vio = stream->baseud; |
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| 214 | struct roar_vio_sysio_ioctl ctl; |
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| 215 | struct subdev * subdev = stream->ud; |
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| 216 | int i; |
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| 217 | int l, r; |
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| 218 | |
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| 219 | if ( channels == 0 ) |
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| 220 | return 0; |
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| 221 | |
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| 222 | if ( channels == 1 ) { |
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| 223 | l = r = settings->mixer[0]; |
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| 224 | } else { |
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| 225 | l = settings->mixer[0]; |
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| 226 | r = settings->mixer[1]; |
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| 227 | } |
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| 228 | |
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| 229 | if ( subdev->channels == 1 ) { |
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| 230 | l = r = (l + r) / 2; |
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| 231 | } |
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| 232 | |
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| 233 | l = (l * OSS_VOLUME_SCALE) / settings->scale; |
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| 234 | r = (r * OSS_VOLUME_SCALE) / settings->scale; |
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| 235 | |
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| 236 | i = (l & 0xFF) | ((r & 0xFF) << 8); |
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| 237 | |
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| 238 | ctl.cmd = subdev->cmd_write; |
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| 239 | ctl.argp = &i; |
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| 240 | |
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| 241 | return roar_vio_ctl(vio, ROAR_VIO_CTL_SYSIO_IOCTL, &ctl); |
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| 242 | } |
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| 243 | |
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[4378] | 244 | int hwmixer_oss_get_vol(struct hwmixer_stream * stream, int channels, int mode, struct roar_mixer_settings * settings) { |
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| 245 | struct roar_vio_calls * vio = stream->baseud; |
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| 246 | struct roar_vio_sysio_ioctl ctl; |
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| 247 | struct subdev * subdev = stream->ud; |
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| 248 | int i; |
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| 249 | int l, r; |
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| 250 | |
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| 251 | ctl.cmd = subdev->cmd_read; |
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| 252 | ctl.argp = &i; |
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| 253 | |
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| 254 | if ( roar_vio_ctl(vio, ROAR_VIO_CTL_SYSIO_IOCTL, &ctl) == -1 ) |
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| 255 | return -1; |
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| 256 | |
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| 257 | l = i & 0xFF; |
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| 258 | r = (i >> 8) & 0xFF; |
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| 259 | |
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| 260 | if ( subdev->channels == 1 ) |
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| 261 | r = l; |
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| 262 | |
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| 263 | settings->scale = OSS_VOLUME_SCALE; |
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| 264 | |
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| 265 | if ( channels == 1 ) { |
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| 266 | settings->mixer[0] = (l + r) / 2; |
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| 267 | } else if ( channels == 2 ) { |
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| 268 | settings->mixer[0] = l; |
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| 269 | settings->mixer[1] = r; |
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| 270 | } else { |
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| 271 | return -1; |
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| 272 | } |
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| 273 | |
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| 274 | return 0; |
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| 275 | } |
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| 276 | |
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[4373] | 277 | //ll |
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