1 | //mixer.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2015 |
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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 | int need_vol_change (int channels, struct roar_mixer_settings * set) { |
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29 | int i; |
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30 | |
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31 | if ( set == NULL || channels < 1 || channels > ROAR_MAX_CHANNELS ) |
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32 | return -1; |
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33 | |
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34 | if ( set->rpg_mul != set->rpg_div ) |
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35 | return 1; |
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36 | |
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37 | for (i = 0; i < channels; i++) |
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38 | if ( set->mixer[i] != set->scale ) |
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39 | return 1; |
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40 | |
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41 | return 0; |
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42 | } |
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43 | |
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44 | #define _err() streams_delete(stream); return -1 |
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45 | int add_mixer (int subsys, char * name, struct roar_stream_server ** ss_ptr) { |
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46 | struct roar_stream_server * ss; |
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47 | int stream; |
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48 | |
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49 | if ( (stream = streams_new()) == -1 ) |
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50 | return -1; |
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51 | |
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52 | if ( streams_get(stream, &ss) == -1 ) { |
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53 | _err(); |
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54 | } |
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55 | |
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56 | if ( streams_set_name(stream, name) == -1 ) { |
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57 | _err(); |
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58 | } |
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59 | |
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60 | if ( client_stream_add(g_self_client, stream) == -1 ) { |
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61 | _err(); |
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62 | } |
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63 | |
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64 | if ( streams_set_dir(stream, ROAR_DIR_MIXING, 1) == -1 ) { |
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65 | _err(); |
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66 | } |
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67 | |
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68 | // the mixers are the most sync thing we have... |
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69 | if ( streams_set_rawflag(stream, ROAR_FLAG_SYNC) == -1 ) { |
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70 | _err(); |
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71 | } |
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72 | |
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73 | if ( streams_set_flag(stream, ROAR_FLAG_IMMUTABLE) == -1 ) { |
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74 | _err(); |
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75 | } |
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76 | |
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77 | switch (subsys) { |
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78 | case ROAR_SUBSYS_WAVEFORM: |
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79 | ss->delay = _MEGA/ROAR_OUTPUT_CFREQ; |
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80 | break; |
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81 | } |
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82 | |
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83 | if ( ss_ptr != NULL ) |
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84 | *ss_ptr = ss; |
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85 | |
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86 | return stream; |
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87 | } |
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88 | |
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89 | //ll |
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