1 | //hwmixer.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 FLAG_NONE 0x0000 |
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29 | #define FLAG_FHSEC 0x0001 |
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30 | |
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31 | struct hwmixer { |
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32 | const char * name; |
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33 | const char * desc; |
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34 | const char * devs; |
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35 | int flags; |
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36 | int (*open)(struct hwmixer_stream * stream, char * drv, char * dev, int fh, char * basename, struct roar_keyval * subnames, size_t subnamelen); |
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37 | int (*close)(struct hwmixer_stream * stream); |
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38 | int (*set_vol)(struct hwmixer_stream * stream, int channels, int mode, struct roar_mixer_settings * settings); |
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39 | int (*get_vol)(struct hwmixer_stream * stream, int channels, int mode, struct roar_mixer_settings * settings); |
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40 | }; |
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41 | |
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42 | static int __true (void) { return 0; } |
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43 | |
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44 | struct hwmixer g_hwmixers[] = { |
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45 | {"oss", "OSS Mixer", "/dev/mixer*", FLAG_FHSEC, NULL, NULL, NULL, NULL}, |
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46 | {"file", "Write to plain file", "/some/file", FLAG_FHSEC, NULL, NULL, NULL, NULL}, |
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47 | {"dstr", "Write to DSTR", "/some/file", FLAG_NONE, hwmixer_dstr_open, hwmixer_dstr_close, hwmixer_dstr_set_vol, NULL}, |
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48 | {"null", "Null Mixer", NULL, FLAG_NONE, __true, __true, __true, __true}, |
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49 | {NULL, NULL, NULL, FLAG_NONE, NULL, NULL, NULL, NULL} |
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50 | }; |
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51 | |
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52 | void print_hwmixerlist (void) { |
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53 | struct hwmixer * mixer; |
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54 | int i; |
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55 | |
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56 | printf(" Source Flag Subsys - Description (devices)\n"); |
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57 | printf("------------------------------------------------------\n"); |
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58 | |
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59 | for (i = 0; (mixer = &(g_hwmixers[i]))->name != NULL; i++) { |
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60 | printf(" %-9s %c Mixer - %s (devices: %s)\n", |
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61 | mixer->name, |
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62 | mixer->flags & FLAG_FHSEC ? 's' : ' ', |
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63 | mixer->desc, |
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64 | mixer->devs == NULL ? "(none)" : mixer->devs |
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65 | ); |
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66 | } |
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67 | } |
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68 | |
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69 | void hwmixer_setup_info(struct hwmixer_stream * mstream) { |
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70 | struct roar_stream_server * ss; |
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71 | |
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72 | streams_get(mstream->stream, &ss); |
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73 | |
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74 | memset(&(ROAR_STREAM(ss)->info), 0, sizeof(ROAR_STREAM(ss)->info)); |
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75 | |
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76 | streams_set_dir(mstream->stream, ROAR_DIR_MIXING, 1); |
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77 | |
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78 | streams_set_flag(mstream->stream, ROAR_FLAG_HWMIXER); |
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79 | } |
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80 | |
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81 | int hwmixer_open(int basestream, char * drv, char * dev, int fh, char * basename, char * subnames) { |
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82 | struct roar_stream_server * ss; |
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83 | struct roar_keyval * subnamekv = NULL; |
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84 | struct hwmixer * mixer = NULL; |
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85 | struct hwmixer_stream * stream; |
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86 | ssize_t subnamekvlen = 0; |
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87 | int i; |
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88 | int ret; |
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89 | |
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90 | for (i = 0; g_hwmixers[i].name != NULL; i++) { |
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91 | if ( !strcmp(g_hwmixers[i].name, drv) ) { |
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92 | mixer = &(g_hwmixers[i]); |
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93 | break; |
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94 | } |
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95 | } |
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96 | |
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97 | if ( mixer == NULL ) { |
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98 | ROAR_WARN("hwmixer_open(basestream=%i, drv='%s', dev='%s', fh=%i, basename='%s', subnames='%s'): Driver not found.", basestream, drv, dev, fh, basename, subnames); |
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99 | return -1; |
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100 | } |
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101 | |
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102 | if ( mixer->open == NULL ) { |
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103 | return -1; |
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104 | } |
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105 | |
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106 | if ( fh != -1 && !(mixer->flags & FLAG_FHSEC) ) { |
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107 | return -1; |
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108 | } |
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109 | |
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110 | stream = roar_mm_malloc(sizeof(struct hwmixer_stream)); |
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111 | if ( stream == NULL ) |
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112 | return -1; |
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113 | |
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114 | memset(stream, 0, sizeof(struct hwmixer_stream)); |
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115 | |
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116 | stream->hwmixer = mixer; |
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117 | stream->basestream = basestream; |
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118 | stream->stream = basestream; |
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119 | stream->baseud = NULL; |
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120 | stream->ud = NULL; |
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121 | |
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122 | if ( basename == NULL ) { |
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123 | streams_set_name(basestream, "Hardware Mixer"); |
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124 | } else { |
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125 | streams_set_name(basestream, basename); |
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126 | } |
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127 | |
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128 | hwmixer_setup_info(stream); |
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129 | |
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130 | ret = mixer->open(stream, drv, dev, fh, basename, subnamekv, subnamekvlen); |
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131 | |
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132 | if ( ret == -1 ) { |
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133 | roar_mm_free(stream); |
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134 | return -1; |
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135 | } |
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136 | |
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137 | streams_set_mixerstream(basestream, stream); |
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138 | |
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139 | if ( streams_get(basestream, &ss) == 0 ) { |
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140 | hwmixer_set_volume(basestream, ss, stream, &(ss->mixer)); |
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141 | } |
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142 | |
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143 | return 0; |
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144 | } |
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145 | |
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146 | int hwmixer_close(int stream) { |
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147 | struct hwmixer_stream * mstream = streams_get_mixerstream(stream); |
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148 | |
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149 | if ( mstream == NULL ) |
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150 | return 0; |
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151 | |
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152 | if ( mstream->hwmixer->close != NULL ) |
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153 | mstream->hwmixer->close(mstream); |
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154 | |
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155 | roar_mm_free(mstream); |
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156 | |
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157 | return 0; |
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158 | } |
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159 | |
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160 | int hwmixer_set_volume(int id, struct roar_stream_server * ss, struct hwmixer_stream * mstream, struct roar_mixer_settings * |
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161 | settings) { |
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162 | if ( mstream->hwmixer->set_vol != NULL ) |
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163 | return mstream->hwmixer->set_vol(mstream, ROAR_STREAM(ss)->info.channels, HWMIXER_MODE_SET, settings); |
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164 | |
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165 | return 0; |
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166 | } |
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167 | |
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168 | struct hwmixer_stream * hwmixer_substream_new(struct hwmixer_stream * parent) { |
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169 | struct roar_stream_server * ss; |
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170 | struct hwmixer_stream * stream; |
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171 | int id; |
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172 | |
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173 | ROAR_DBG("hwmixer_substream_new(parent=%p) = ?", parent); |
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174 | |
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175 | if ( parent == NULL ) |
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176 | return NULL; |
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177 | |
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178 | ROAR_DBG("hwmixer_substream_new(parent=%p) = ?", parent); |
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179 | |
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180 | stream = roar_mm_malloc(sizeof(struct hwmixer_stream)); |
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181 | if ( stream == NULL ) |
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182 | return NULL; |
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183 | |
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184 | ROAR_DBG("hwmixer_substream_new(parent=%p) = ?", parent); |
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185 | |
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186 | if ( (id = streams_new_virtual(parent->basestream, &ss)) == -1 ) { |
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187 | roar_mm_free(stream); |
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188 | return NULL; |
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189 | } |
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190 | |
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191 | memset(stream, 0, sizeof(struct hwmixer_stream)); |
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192 | |
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193 | stream->hwmixer = parent->hwmixer; |
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194 | stream->basestream = parent->basestream; |
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195 | stream->stream = id; |
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196 | stream->baseud = parent->baseud; |
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197 | stream->ud = NULL; |
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198 | |
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199 | hwmixer_setup_info(stream); |
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200 | |
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201 | streams_set_mixerstream(id, stream); |
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202 | |
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203 | ROAR_DBG("hwmixer_substream_new(parent=%p) = %p", parent, stream); |
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204 | |
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205 | return stream; |
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206 | } |
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207 | |
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208 | //ll |
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