[169] | 1 | //midi.c: |
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| 2 | |
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[668] | 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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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, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 22 | * |
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| 23 | */ |
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| 24 | |
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[169] | 25 | #include "roard.h" |
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| 26 | |
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[1751] | 27 | #if defined(ROAR_HAVE_IO_POSIX) && !defined(ROAR_TARGET_WIN32) |
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| 28 | #define _HAVE_CONSOLE |
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| 29 | #endif |
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| 30 | |
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[185] | 31 | int midi_init (void) { |
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[1843] | 32 | |
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| 33 | if ( midi_cb_init() == -1 ) { |
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| 34 | ROAR_WARN("Can not initialize MIDI subsystem component CB"); |
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| 35 | } |
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| 36 | |
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[1848] | 37 | if ( midi_clock_init() == -1 ) { |
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| 38 | ROAR_WARN("Can not initialize MIDI subsystem component clock"); |
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| 39 | } |
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| 40 | |
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[1863] | 41 | g_midi_mess.buf = NULL; |
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| 42 | |
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[1843] | 43 | return 0; |
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| 44 | } |
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[1848] | 45 | |
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[1843] | 46 | int midi_free (void) { |
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| 47 | return midi_cb_free(); |
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| 48 | } |
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| 49 | |
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| 50 | int midi_update(void) { |
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[1848] | 51 | |
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[1850] | 52 | if ( g_midi_clock.stream != -1 ) |
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| 53 | midi_check_bridge(g_midi_clock.stream); |
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[1848] | 54 | |
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[1843] | 55 | return midi_cb_update(); |
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| 56 | } |
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| 57 | |
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[1855] | 58 | int midi_reinit(void) { |
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[1868] | 59 | |
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| 60 | if ( g_midi_mess.buf != NULL ) |
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| 61 | roar_buffer_free(g_midi_mess.buf); |
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| 62 | |
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| 63 | g_midi_mess.buf = NULL; |
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| 64 | |
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[1855] | 65 | return 0; |
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| 66 | } |
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| 67 | |
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[1845] | 68 | // STREAMS: |
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| 69 | |
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| 70 | int midi_check_stream (int id) { |
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[1846] | 71 | struct roar_stream * s; |
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| 72 | struct roar_stream_server * ss; |
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[1858] | 73 | struct roar_buffer * b; |
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| 74 | char * buf; |
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| 75 | ssize_t len; |
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[1859] | 76 | int i; |
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[1846] | 77 | |
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| 78 | if ( g_streams[id] == NULL ) |
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| 79 | return -1; |
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| 80 | |
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| 81 | ROAR_DBG("midi_check_stream(id=%i) = ?", id); |
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| 82 | |
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| 83 | s = ROAR_STREAM(ss = g_streams[id]); |
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| 84 | |
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[1848] | 85 | if ( s->dir == ROAR_DIR_BRIDGE ) |
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| 86 | return midi_check_bridge(id); |
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| 87 | |
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[1846] | 88 | switch (s->info.codec) { |
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[1858] | 89 | case ROAR_CODEC_MIDI: |
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| 90 | break; |
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| 91 | default: |
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| 92 | streams_delete(id); |
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| 93 | return -1; |
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| 94 | } |
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| 95 | |
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| 96 | if ( roar_buffer_new(&b, MIDI_READ_SIZE) == -1 ) { |
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| 97 | ROAR_ERR("midi_check_stream(*): Can not alloc buffer space!"); |
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| 98 | ROAR_DBG("midi_check_stream(*) = -1"); |
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| 99 | return -1; |
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| 100 | } |
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| 101 | |
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| 102 | roar_buffer_get_data(b, (void **)&buf); |
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| 103 | |
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| 104 | if ( (len = stream_vio_s_read(ss, buf, MIDI_READ_SIZE)) < 1 ) { |
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| 105 | streams_delete(id); |
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[1862] | 106 | roar_buffer_free(b); |
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[1858] | 107 | return -1; |
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| 108 | } |
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| 109 | |
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| 110 | roar_buffer_set_len(b, len); |
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| 111 | |
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[1859] | 112 | if ( stream_add_buffer(id, b) == -1 ) { |
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| 113 | roar_buffer_free(b); |
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| 114 | streams_delete(id); |
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| 115 | return -1; |
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| 116 | } |
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| 117 | |
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| 118 | for (i = 0; i < ROAR_STREAMS_MAX; i++) { |
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| 119 | if ( g_streams[i] != NULL && ROAR_STREAM(g_streams[i])->pos_rel_id == id ) { |
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| 120 | if ( ROAR_STREAM(g_streams[i])->dir == ROAR_DIR_THRU ) { |
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| 121 | if ( stream_vio_write(i, buf, len) != len ) { |
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| 122 | streams_delete(i); |
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| 123 | } |
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| 124 | } |
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[1858] | 125 | } |
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[1859] | 126 | } |
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[1858] | 127 | |
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| 128 | switch (s->info.codec) { |
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| 129 | case ROAR_CODEC_MIDI: |
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| 130 | return midi_conv_midi2mes(id); |
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| 131 | break; |
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[1846] | 132 | default: |
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| 133 | streams_delete(id); |
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| 134 | return -1; |
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| 135 | } |
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| 136 | |
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| 137 | return 0; |
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[1845] | 138 | } |
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[1846] | 139 | |
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[1845] | 140 | int midi_send_stream (int id) { |
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[1846] | 141 | struct roar_stream * s; |
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| 142 | struct roar_stream_server * ss; |
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| 143 | |
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| 144 | if ( g_streams[id] == NULL ) |
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| 145 | return -1; |
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| 146 | |
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| 147 | ROAR_DBG("midi_send_stream(id=%i) = ?", id); |
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| 148 | |
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| 149 | s = ROAR_STREAM(ss = g_streams[id]); |
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| 150 | |
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| 151 | switch (s->info.codec) { |
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[1877] | 152 | case ROAR_CODEC_MIDI: |
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| 153 | return midi_conv_mes2midi(id); |
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| 154 | break; |
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[1846] | 155 | default: |
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| 156 | streams_delete(id); |
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| 157 | return -1; |
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| 158 | } |
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| 159 | |
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| 160 | return 0; |
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[1845] | 161 | } |
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| 162 | |
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[1858] | 163 | int midi_conv_midi2mes (int id) { |
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[1863] | 164 | unsigned char * data; |
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| 165 | struct roar_stream * s; |
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| 166 | struct roar_stream_server * ss; |
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| 167 | struct roar_buffer * buf = NULL; |
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| 168 | struct midi_message * mes = NULL; |
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[1879] | 169 | size_t need = 0, have = 0, last_have = 0, old_have = 0; |
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[1863] | 170 | int alive = 1; |
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| 171 | |
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| 172 | if ( g_streams[id] == NULL ) |
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| 173 | return -1; |
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| 174 | |
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| 175 | ROAR_DBG("midi_conv_midi2mes(id=%i) = ?", id); |
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| 176 | |
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| 177 | s = ROAR_STREAM(ss = g_streams[id]); |
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| 178 | |
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| 179 | while (ss->buffer != NULL && alive) { |
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| 180 | if ( roar_buffer_get_data(ss->buffer, (void**)&data) == -1 ) { |
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| 181 | alive = 0; |
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| 182 | continue; |
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| 183 | } |
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| 184 | |
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| 185 | if ( roar_buffer_get_len(ss->buffer, &have) == -1 ) { |
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| 186 | alive = 0; |
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| 187 | continue; |
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| 188 | } |
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[1879] | 189 | old_have = have; |
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[1863] | 190 | |
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| 191 | while (have && alive) { |
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| 192 | if ( *data & 0x80 ) { |
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[1865] | 193 | if ( buf != NULL ) { |
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[1866] | 194 | midi_add_buf(id, buf); |
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[1865] | 195 | buf = NULL; |
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| 196 | } |
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| 197 | |
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[1879] | 198 | last_have = have; |
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| 199 | |
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[1863] | 200 | need = 0; |
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| 201 | if ( midi_new_bufmes(&buf, &mes) == -1 ) { |
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| 202 | alive = 0; |
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| 203 | continue; |
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| 204 | } |
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[1865] | 205 | |
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| 206 | if (*data == MIDI_TYPE_CLOCK_TICK || *data == MIDI_TYPE_CLOCK_START || *data == MIDI_TYPE_CLOCK_STOP ) { |
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| 207 | mes->type = *data; |
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| 208 | } else { |
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| 209 | mes->type = *data & 0xF0; |
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| 210 | mes->channel = *data & 0x0F; |
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| 211 | switch (*data & 0xF0) { |
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| 212 | case MIDI_TYPE_NOTE_ON: |
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| 213 | case MIDI_TYPE_NOTE_OFF: |
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| 214 | need = 2; |
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| 215 | break; |
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| 216 | case MIDI_TYPE_PA: |
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| 217 | need = 2; |
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| 218 | break; |
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| 219 | case MIDI_TYPE_CONTROLER: |
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| 220 | need = 2; |
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| 221 | break; |
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| 222 | case MIDI_TYPE_PROGRAM: |
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| 223 | need = 1; |
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| 224 | break; |
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| 225 | case MIDI_TYPE_MA: |
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| 226 | need = 1; |
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| 227 | break; |
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| 228 | case MIDI_TYPE_PB: |
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| 229 | case MIDI_TYPE_SYSEX: |
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| 230 | need = 1; |
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| 231 | break; |
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| 232 | } |
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| 233 | } |
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| 234 | |
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[1863] | 235 | } else { |
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[1871] | 236 | |
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| 237 | if ( mes == NULL ) { |
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| 238 | ROAR_WARN("midi_conv_midi2mes(id=%i): Lost sync.", id); |
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| 239 | data++; |
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| 240 | have--; |
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| 241 | continue; |
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| 242 | } |
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| 243 | |
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| 244 | switch (mes->type) { |
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[1873] | 245 | case MIDI_TYPE_NOTE_ON: |
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| 246 | case MIDI_TYPE_NOTE_OFF: |
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[1874] | 247 | case MIDI_TYPE_PA: |
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| 248 | case MIDI_TYPE_CONTROLER: |
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[1873] | 249 | if ( need == 2 ) { |
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| 250 | mes->kk = *data; |
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| 251 | } else { |
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| 252 | mes->vv = *data; |
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| 253 | } |
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| 254 | break; |
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| 255 | case MIDI_TYPE_PROGRAM: |
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| 256 | case MIDI_TYPE_MA: |
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[1874] | 257 | mes->vv = *data; |
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| 258 | break; |
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[1873] | 259 | case MIDI_TYPE_PB: |
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| 260 | case MIDI_TYPE_SYSEX: |
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[1874] | 261 | ROAR_WARN("midi_conv_midi2mes(id=%i): Message of Type 0x%.2X (PB or SysEx) not yet supported", id, mes->type); |
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[1873] | 262 | break; |
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[1871] | 263 | } |
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| 264 | |
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[1863] | 265 | if ( need ) |
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| 266 | need--; |
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| 267 | } |
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| 268 | data++; |
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| 269 | have--; |
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| 270 | } |
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| 271 | |
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[1865] | 272 | if ( need ) { |
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[1879] | 273 | if ( roar_buffer_set_offset(ss->buffer, old_have - last_have) == -1 ) { |
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| 274 | ROAR_ERR("midi_conv_midi2mes(*): FIXME: BUG!!! Need to restore buffer here with corrected length"); |
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| 275 | } |
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[1865] | 276 | } else if ( !have ) { |
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[1863] | 277 | roar_buffer_next(&(ss->buffer)); |
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| 278 | } |
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| 279 | |
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| 280 | if ( need && buf != NULL ) { |
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| 281 | roar_buffer_free(buf); |
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| 282 | buf = NULL; |
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| 283 | } else if ( buf != NULL ) { |
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[1866] | 284 | midi_add_buf(id, buf); |
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[1863] | 285 | buf = NULL; |
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| 286 | } |
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| 287 | } |
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| 288 | |
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| 289 | return 0; |
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[1858] | 290 | } |
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| 291 | |
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[1877] | 292 | #define _nb len++; *(d++) |
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[1858] | 293 | int midi_conv_mes2midi (int id) { |
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[1877] | 294 | struct roar_stream * s; |
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| 295 | struct roar_stream_server * ss; |
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| 296 | struct roar_buffer * buf = g_midi_mess.buf; |
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| 297 | struct midi_message * mes = NULL; |
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| 298 | unsigned char data[3]; |
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| 299 | unsigned char * d; |
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| 300 | int len; |
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| 301 | |
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| 302 | if ( g_streams[id] == NULL ) |
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| 303 | return -1; |
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| 304 | |
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| 305 | ROAR_DBG("midi_conv_mes2midi(id=%i) = ?", id); |
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| 306 | |
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| 307 | s = ROAR_STREAM(ss = g_streams[id]); |
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| 308 | |
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| 309 | while (buf != NULL) { |
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| 310 | if ( roar_buffer_get_data(buf, (void**)&mes) == -1 ) { |
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| 311 | return -1; |
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| 312 | } |
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| 313 | |
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| 314 | if (mes->type == MIDI_TYPE_CLOCK_TICK || mes->type == MIDI_TYPE_CLOCK_START || mes->type == MIDI_TYPE_CLOCK_STOP ) { |
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| 315 | if ( stream_vio_s_write(ss, &(mes->type), 1) != 1 ) { |
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| 316 | streams_delete(id); |
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| 317 | return -1; |
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| 318 | } |
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| 319 | } else { |
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| 320 | len = 0; |
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| 321 | d = data; |
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| 322 | |
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| 323 | _nb = (mes->type & 0xF0) | (mes->channel & 0x0F); |
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| 324 | |
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| 325 | switch (mes->type) { |
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| 326 | case MIDI_TYPE_NOTE_ON: |
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| 327 | case MIDI_TYPE_NOTE_OFF: |
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| 328 | case MIDI_TYPE_PA: |
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| 329 | case MIDI_TYPE_CONTROLER: |
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| 330 | _nb = mes->kk; |
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| 331 | _nb = mes->vv; |
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| 332 | break; |
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| 333 | case MIDI_TYPE_PROGRAM: |
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| 334 | case MIDI_TYPE_MA: |
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| 335 | _nb = mes->vv; |
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| 336 | break; |
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| 337 | case MIDI_TYPE_PB: |
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| 338 | case MIDI_TYPE_SYSEX: |
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| 339 | break; |
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| 340 | } |
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| 341 | |
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| 342 | if ( stream_vio_s_write(ss, data, len) != len ) { |
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| 343 | streams_delete(id); |
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| 344 | return -1; |
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| 345 | } |
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| 346 | } |
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| 347 | |
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| 348 | if ( roar_buffer_get_next(buf, &buf) == -1 ) |
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| 349 | buf = NULL; |
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| 350 | } |
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| 351 | |
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| 352 | return 0; |
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[1858] | 353 | } |
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[1877] | 354 | #undef _nb |
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[1858] | 355 | |
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[1863] | 356 | int midi_new_bufmes (struct roar_buffer ** buf, struct midi_message ** mes) { |
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| 357 | if ( buf == NULL || mes == NULL ) |
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| 358 | return -1; |
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| 359 | |
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[1867] | 360 | *buf = (void*)(*mes = NULL); |
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[1863] | 361 | |
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| 362 | if ( roar_buffer_new(buf, sizeof(struct midi_message)) == -1 ) |
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| 363 | return -1; |
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| 364 | |
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| 365 | if ( roar_buffer_get_data(*buf, (void**)mes) == -1 ) { |
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| 366 | roar_buffer_free(*buf); |
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[1867] | 367 | *buf = (void*)(*mes = NULL); |
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[1863] | 368 | return -1; |
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| 369 | } |
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| 370 | |
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| 371 | memset((void*)*mes, 0, sizeof(struct midi_message)); |
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| 372 | |
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| 373 | (*mes)->type = MIDI_TYPE_NONE; |
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| 374 | |
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| 375 | return 0; |
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| 376 | } |
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| 377 | |
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[1866] | 378 | int midi_add_buf (int id, struct roar_buffer * buf) { |
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[1869] | 379 | struct midi_message * mes; |
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| 380 | |
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[1866] | 381 | if ( id == -1 || buf == NULL ) |
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| 382 | return -1; |
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| 383 | |
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[1872] | 384 | if ( roar_buffer_get_data(buf, (void**)&mes) == -1 ) |
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[1869] | 385 | return -1; |
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| 386 | |
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[1878] | 387 | ROAR_DBG("midi_add_buf(id=%i, buf=%p) = ?", id, buf); |
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| 388 | ROAR_DBG("midi_add_buf(*): MIDI Message of Type 0x%.2X", mes->type); |
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| 389 | ROAR_DBG("midi_add_buf(*): Channel: %i", mes->channel); |
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| 390 | ROAR_DBG("midi_add_buf(*): flags=0x%.2X", mes->flags); |
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| 391 | ROAR_DBG("midi_add_buf(*): kk=0x%.2X, vv=0x%.2X", mes->kk, mes->vv); |
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[1869] | 392 | |
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[1866] | 393 | if ( g_midi_mess.buf == NULL ) { |
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| 394 | g_midi_mess.buf = buf; |
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| 395 | } else { |
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| 396 | roar_buffer_add(g_midi_mess.buf, buf); |
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| 397 | } |
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| 398 | |
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| 399 | return 0; |
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| 400 | } |
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| 401 | |
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[1848] | 402 | // bridges: |
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| 403 | int midi_check_bridge (int id) { |
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[1851] | 404 | |
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[1860] | 405 | ROAR_DBG("midi_check_bridge(id=%i) = ?", id); |
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[1851] | 406 | |
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| 407 | if ( id == g_midi_clock.stream ) { |
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| 408 | midi_clock_tick(); |
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| 409 | |
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| 410 | return 0; |
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| 411 | } |
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| 412 | |
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[1848] | 413 | return -1; |
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| 414 | } |
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| 415 | |
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| 416 | // clock: |
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| 417 | |
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| 418 | int midi_clock_init (void) { |
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| 419 | struct roar_stream * s; |
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| 420 | struct roar_stream_server * ss; |
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| 421 | |
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[1850] | 422 | if ( (g_midi_clock.stream = streams_new()) == -1 ) { |
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[1848] | 423 | ROAR_WARN("Error while initializing MIDI subsystem component clock"); |
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| 424 | return -1; |
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| 425 | } |
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| 426 | |
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[1850] | 427 | midi_vio_set_dummy(g_midi_clock.stream); |
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[1848] | 428 | |
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[1850] | 429 | streams_get(g_midi_clock.stream, &ss); |
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[1848] | 430 | s = ROAR_STREAM(ss); |
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| 431 | |
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| 432 | memcpy(&(s->info), g_sa, sizeof(struct roar_audio_info)); |
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| 433 | |
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[1850] | 434 | s->pos_rel_id = g_midi_clock.stream; |
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[1848] | 435 | |
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| 436 | s->info.codec = ROAR_CODEC_MIDI; |
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| 437 | ss->codec_orgi = ROAR_CODEC_MIDI; |
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| 438 | |
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| 439 | s->info.channels = 0; |
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| 440 | s->info.rate = MIDI_RATE; |
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| 441 | s->info.bits = 8; |
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| 442 | |
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[1850] | 443 | if ( streams_set_dir(g_midi_clock.stream, ROAR_DIR_BRIDGE, 1) == -1 ) { |
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[1848] | 444 | ROAR_WARN("Error while initializing MIDI subsystem component clock"); |
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| 445 | return -1; |
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| 446 | } |
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| 447 | |
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[1850] | 448 | streams_set_name(g_midi_clock.stream, "MIDI Clock"); |
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[1848] | 449 | |
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[1850] | 450 | streams_set_flag(g_midi_clock.stream, ROAR_FLAG_PRIMARY); |
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| 451 | streams_set_flag(g_midi_clock.stream, ROAR_FLAG_SYNC); |
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[1848] | 452 | |
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[1851] | 453 | midi_clock_set_bph(3600); // one tick per sec |
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| 454 | |
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| 455 | return 0; |
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| 456 | } |
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| 457 | |
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| 458 | int midi_clock_set_bph (uint_least32_t bph) { |
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| 459 | uint_least32_t sph = g_sa->rate/2 * 75 * g_sa->channels; // samples per houre |
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| 460 | |
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| 461 | g_midi_clock.bph = bph; |
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| 462 | |
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| 463 | g_midi_clock.spt = sph/bph; |
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| 464 | |
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| 465 | g_midi_clock.nt = ROAR_MATH_OVERFLOW_ADD(g_pos, g_midi_clock.spt); |
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| 466 | |
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| 467 | return 0; |
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| 468 | } |
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| 469 | |
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| 470 | int midi_clock_tick (void) { |
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[1875] | 471 | struct roar_buffer * buf; |
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| 472 | struct midi_message * mes; |
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[1851] | 473 | unsigned int diff; |
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| 474 | |
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| 475 | while ( g_pos >= g_midi_clock.nt ) { |
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| 476 | diff = g_pos - g_midi_clock.nt; |
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[1860] | 477 | ROAR_DBG("midi_clock_tick(void): g_pos is %u samples (%5.2f%%) ahead of nt.", diff, (float)diff/g_midi_clock.spt); |
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[1851] | 478 | |
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| 479 | g_midi_clock.nt = ROAR_MATH_OVERFLOW_ADD(g_midi_clock.nt, g_midi_clock.spt); |
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| 480 | |
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| 481 | if ( streams_get_flag(g_midi_clock.stream, ROAR_FLAG_SYNC) ) { |
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[1860] | 482 | ROAR_DBG("midi_clock_tick(void): TICK! (nt=%lu)", g_midi_clock.nt); |
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[1875] | 483 | if ( midi_new_bufmes(&buf, &mes) == -1 ) { |
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| 484 | ROAR_ERR("midi_clock_tick(void): Can not create Clock-Tick-Message"); |
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| 485 | } |
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| 486 | |
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| 487 | mes->type = MIDI_TYPE_CLOCK_TICK; |
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| 488 | |
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| 489 | if ( midi_add_buf(g_midi_clock.stream, buf) == -1 ) { |
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| 490 | ROAR_ERR("midi_clock_tick(void): Can not add Clock-Tick-Message"); |
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| 491 | roar_buffer_free(buf); |
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| 492 | return -1; |
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| 493 | } |
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[1851] | 494 | } else { |
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[1860] | 495 | ROAR_DBG("midi_clock_tick(void): silent tick. (nt=%lu)", g_midi_clock.nt); |
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[1851] | 496 | } |
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| 497 | } |
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| 498 | |
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[1848] | 499 | return 0; |
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| 500 | } |
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| 501 | |
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[1845] | 502 | // CB: |
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[1843] | 503 | |
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| 504 | int midi_cb_init (void) { |
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[1751] | 505 | #ifdef _HAVE_CONSOLE |
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[1843] | 506 | struct roar_stream * s; |
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| 507 | struct roar_stream_server * ss; |
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[185] | 508 | int i; |
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| 509 | char * files[] = { |
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| 510 | "/dev/console", |
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| 511 | #ifdef __linux__ |
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| 512 | "/dev/tty0", |
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| 513 | "/dev/vc/0", |
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| 514 | #endif |
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| 515 | NULL |
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| 516 | }; |
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| 517 | |
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[1853] | 518 | g_midi_cb.console = -1; |
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| 519 | g_midi_cb.stream = -1; |
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| 520 | g_midi_cb.stoptime = 0; |
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| 521 | g_midi_cb.playing = 0; |
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[185] | 522 | |
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| 523 | for (i = 0; files[i] != NULL; i++) { |
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[1853] | 524 | if ( (g_midi_cb.console = open(files[i], O_WRONLY|O_NOCTTY, 0)) != -1 ) |
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[185] | 525 | break; |
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| 526 | } |
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| 527 | |
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[1853] | 528 | if ( g_midi_cb.console == -1 ) |
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[1843] | 529 | return -1; |
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| 530 | |
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[1853] | 531 | if ( (g_midi_cb.stream = streams_new()) == -1 ) { |
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[1843] | 532 | ROAR_WARN("Error while initializing MIDI subsystem component CB"); |
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| 533 | midi_cb_free(); |
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[187] | 534 | return -1; |
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| 535 | } |
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[1843] | 536 | |
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[1853] | 537 | midi_vio_set_dummy(g_midi_cb.stream); |
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[1848] | 538 | |
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[1853] | 539 | streams_get(g_midi_cb.stream, &ss); |
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[1843] | 540 | s = ROAR_STREAM(ss); |
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| 541 | |
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| 542 | memcpy(&(s->info), g_sa, sizeof(struct roar_audio_info)); |
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| 543 | |
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| 544 | s->pos_rel_id = -1; |
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| 545 | |
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| 546 | s->info.codec = 0; |
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| 547 | ss->codec_orgi = 0; |
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| 548 | |
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| 549 | s->info.channels = 1; |
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| 550 | s->info.rate = 1193180; |
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| 551 | s->info.bits = 8; |
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| 552 | |
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[1853] | 553 | if ( streams_set_dir(g_midi_cb.stream, ROAR_DIR_BRIDGE, 1) == -1 ) { |
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[1843] | 554 | ROAR_WARN("Error while initializing MIDI subsystem component CB"); |
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| 555 | midi_cb_free(); |
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| 556 | return -1; |
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| 557 | } |
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| 558 | |
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[1853] | 559 | streams_set_name(g_midi_cb.stream, "Console speaker bridge"); |
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[1843] | 560 | |
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[1853] | 561 | streams_set_flag(g_midi_cb.stream, ROAR_FLAG_OUTPUT); |
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| 562 | streams_set_flag(g_midi_cb.stream, ROAR_FLAG_PRIMARY); |
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| 563 | streams_set_flag(g_midi_cb.stream, ROAR_FLAG_HWMIXER); |
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[1843] | 564 | |
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| 565 | return 0; |
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[1485] | 566 | #else |
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[1853] | 567 | g_midi_cb.console = -1; |
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| 568 | g_midi_cb.stream = -1; |
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[1843] | 569 | |
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[1485] | 570 | return -1; |
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| 571 | #endif |
---|
[185] | 572 | } |
---|
| 573 | |
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[1843] | 574 | int midi_cb_free (void) { |
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[1751] | 575 | #ifdef _HAVE_CONSOLE |
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[1843] | 576 | |
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| 577 | midi_cb_stop(); |
---|
| 578 | |
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[1853] | 579 | if ( g_midi_cb.stream != -1 ) |
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| 580 | streams_delete(g_midi_cb.stream); |
---|
[1843] | 581 | |
---|
[1853] | 582 | if ( g_midi_cb.console != -1 ) |
---|
| 583 | close(g_midi_cb.console); |
---|
[1843] | 584 | |
---|
[185] | 585 | return 0; |
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[1485] | 586 | #else |
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| 587 | return -1; |
---|
| 588 | #endif |
---|
[185] | 589 | } |
---|
| 590 | |
---|
| 591 | int midi_cb_play(float t, float freq, int override) { |
---|
[191] | 592 | float samples_per_sec /* S/s */ = g_sa->rate * g_sa->channels; |
---|
| 593 | |
---|
[189] | 594 | /* |
---|
| 595 | #define MIDI_CB_NOOVERRIDE 0 |
---|
| 596 | #define MIDI_CB_OVERRIDE 1 |
---|
| 597 | */ |
---|
[1853] | 598 | if ( g_midi_cb.playing && override != MIDI_CB_OVERRIDE ) |
---|
[191] | 599 | return -1; |
---|
| 600 | |
---|
[1853] | 601 | g_midi_cb.stoptime = ROAR_MATH_OVERFLOW_ADD(g_pos, samples_per_sec*t); |
---|
[191] | 602 | midi_cb_start(freq); |
---|
[1853] | 603 | g_midi_cb.playing = 1; |
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[191] | 604 | |
---|
| 605 | return 0; |
---|
[185] | 606 | } |
---|
| 607 | |
---|
[190] | 608 | int midi_cb_update (void) { |
---|
[1853] | 609 | if ( !g_midi_cb.playing ) |
---|
[192] | 610 | return 0; |
---|
| 611 | |
---|
[1853] | 612 | if ( g_midi_cb.stoptime <= g_pos ) |
---|
[189] | 613 | midi_cb_stop(); |
---|
| 614 | |
---|
| 615 | return 0; |
---|
| 616 | } |
---|
| 617 | |
---|
[185] | 618 | int midi_cb_start(float freq) { |
---|
| 619 | // On linux this uses ioctl KIOCSOUND |
---|
[188] | 620 | #ifdef __linux__ |
---|
[1853] | 621 | if ( g_midi_cb.console == -1 ) |
---|
[188] | 622 | return -1; |
---|
| 623 | |
---|
[1853] | 624 | if ( ioctl(g_midi_cb.console, KIOCSOUND, freq == 0 ? 0 : (int)(1193180.0/freq)) == -1 ) |
---|
[188] | 625 | return -1; |
---|
| 626 | |
---|
| 627 | return 0; |
---|
| 628 | #else |
---|
[185] | 629 | return -1; |
---|
[188] | 630 | #endif |
---|
[185] | 631 | } |
---|
| 632 | |
---|
| 633 | int midi_cb_stop (void) { |
---|
| 634 | #ifdef __linux__ |
---|
[1853] | 635 | g_midi_cb.playing = 0; |
---|
[185] | 636 | return midi_cb_start(0); |
---|
| 637 | #else |
---|
| 638 | return -1; |
---|
| 639 | #endif |
---|
| 640 | } |
---|
| 641 | |
---|
[1848] | 642 | // VIO: |
---|
| 643 | |
---|
| 644 | int midi_vio_set_dummy(int stream) { |
---|
| 645 | struct roar_stream_server * ss; |
---|
| 646 | |
---|
| 647 | if ( streams_get(stream, &ss) == -1 ) |
---|
| 648 | return -1; |
---|
| 649 | |
---|
| 650 | ss->vio.read = NULL; |
---|
| 651 | ss->vio.write = NULL; |
---|
| 652 | ss->vio.lseek = NULL; |
---|
[1849] | 653 | ss->vio.nonblock = (int (*)(struct roar_vio_calls * vio, int state))midi_vio_ok; |
---|
| 654 | ss->vio.sync = (int (*)(struct roar_vio_calls * vio))midi_vio_ok; |
---|
[1848] | 655 | ss->vio.ctl = NULL; |
---|
[1849] | 656 | ss->vio.close = (int (*)(struct roar_vio_calls * vio))midi_vio_ok; |
---|
| 657 | |
---|
| 658 | return 0; |
---|
[1848] | 659 | } |
---|
| 660 | |
---|
| 661 | int midi_vio_ok(struct roar_vio_calls * vio, ...) { |
---|
| 662 | return 0; |
---|
| 663 | } |
---|
| 664 | |
---|
[169] | 665 | //ll |
---|