[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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| 152 | default: |
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| 153 | streams_delete(id); |
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| 154 | return -1; |
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| 155 | } |
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| 156 | |
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| 157 | return 0; |
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[1845] | 158 | } |
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| 159 | |
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[1858] | 160 | int midi_conv_midi2mes (int id) { |
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[1863] | 161 | unsigned char * data; |
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| 162 | struct roar_stream * s; |
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| 163 | struct roar_stream_server * ss; |
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| 164 | struct roar_buffer * buf = NULL; |
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| 165 | struct midi_message * mes = NULL; |
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| 166 | size_t need = 0, have = 0; |
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| 167 | int alive = 1; |
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| 168 | |
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| 169 | if ( g_streams[id] == NULL ) |
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| 170 | return -1; |
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| 171 | |
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| 172 | ROAR_DBG("midi_conv_midi2mes(id=%i) = ?", id); |
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| 173 | |
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| 174 | s = ROAR_STREAM(ss = g_streams[id]); |
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| 175 | |
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| 176 | while (ss->buffer != NULL && alive) { |
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| 177 | if ( roar_buffer_get_data(ss->buffer, (void**)&data) == -1 ) { |
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| 178 | alive = 0; |
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| 179 | continue; |
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| 180 | } |
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| 181 | |
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| 182 | if ( roar_buffer_get_len(ss->buffer, &have) == -1 ) { |
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| 183 | alive = 0; |
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| 184 | continue; |
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| 185 | } |
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| 186 | |
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| 187 | while (have && alive) { |
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| 188 | printf("%.2x=", *data); |
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| 189 | if ( *data & 0x80 ) { |
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[1865] | 190 | if ( buf != NULL ) { |
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[1866] | 191 | midi_add_buf(id, buf); |
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[1865] | 192 | buf = NULL; |
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| 193 | } |
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| 194 | |
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[1863] | 195 | need = 0; |
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| 196 | printf("S\n"); |
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| 197 | if ( midi_new_bufmes(&buf, &mes) == -1 ) { |
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| 198 | alive = 0; |
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| 199 | continue; |
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| 200 | } |
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[1865] | 201 | |
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| 202 | if (*data == MIDI_TYPE_CLOCK_TICK || *data == MIDI_TYPE_CLOCK_START || *data == MIDI_TYPE_CLOCK_STOP ) { |
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| 203 | mes->type = *data; |
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| 204 | } else { |
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| 205 | mes->type = *data & 0xF0; |
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| 206 | mes->channel = *data & 0x0F; |
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| 207 | switch (*data & 0xF0) { |
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| 208 | case MIDI_TYPE_NOTE_ON: |
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| 209 | case MIDI_TYPE_NOTE_OFF: |
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| 210 | need = 2; |
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| 211 | break; |
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| 212 | case MIDI_TYPE_PA: |
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| 213 | need = 2; |
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| 214 | break; |
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| 215 | case MIDI_TYPE_CONTROLER: |
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| 216 | need = 2; |
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| 217 | break; |
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| 218 | case MIDI_TYPE_PROGRAM: |
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| 219 | need = 1; |
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| 220 | break; |
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| 221 | case MIDI_TYPE_MA: |
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| 222 | need = 1; |
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| 223 | break; |
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| 224 | case MIDI_TYPE_PB: |
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| 225 | case MIDI_TYPE_SYSEX: |
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| 226 | need = 1; |
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| 227 | break; |
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| 228 | } |
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| 229 | } |
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| 230 | |
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[1863] | 231 | } else { |
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| 232 | printf("D\n"); |
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| 233 | if ( need ) |
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| 234 | need--; |
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| 235 | } |
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| 236 | data++; |
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| 237 | have--; |
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| 238 | } |
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| 239 | |
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[1865] | 240 | if ( need ) { |
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| 241 | ROAR_ERR("midi_conv_midi2mes(*): FIXME: BUG!!! Need to restore buffer here with corrected length"); |
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| 242 | } else if ( !have ) { |
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[1863] | 243 | roar_buffer_next(&(ss->buffer)); |
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| 244 | } |
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| 245 | |
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| 246 | if ( need && buf != NULL ) { |
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| 247 | roar_buffer_free(buf); |
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| 248 | buf = NULL; |
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| 249 | } else if ( buf != NULL ) { |
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[1866] | 250 | midi_add_buf(id, buf); |
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[1863] | 251 | buf = NULL; |
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| 252 | } |
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| 253 | } |
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| 254 | |
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| 255 | return 0; |
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[1858] | 256 | } |
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| 257 | |
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| 258 | int midi_conv_mes2midi (int id) { |
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| 259 | return -1; |
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| 260 | } |
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| 261 | |
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[1863] | 262 | int midi_new_bufmes (struct roar_buffer ** buf, struct midi_message ** mes) { |
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| 263 | if ( buf == NULL || mes == NULL ) |
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| 264 | return -1; |
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| 265 | |
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[1867] | 266 | *buf = (void*)(*mes = NULL); |
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[1863] | 267 | |
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| 268 | if ( roar_buffer_new(buf, sizeof(struct midi_message)) == -1 ) |
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| 269 | return -1; |
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| 270 | |
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| 271 | if ( roar_buffer_get_data(*buf, (void**)mes) == -1 ) { |
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| 272 | roar_buffer_free(*buf); |
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[1867] | 273 | *buf = (void*)(*mes = NULL); |
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[1863] | 274 | return -1; |
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| 275 | } |
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| 276 | |
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| 277 | memset((void*)*mes, 0, sizeof(struct midi_message)); |
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| 278 | |
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| 279 | (*mes)->type = MIDI_TYPE_NONE; |
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| 280 | |
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| 281 | return 0; |
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| 282 | } |
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| 283 | |
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[1866] | 284 | int midi_add_buf (int id, struct roar_buffer * buf) { |
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[1869] | 285 | struct midi_message * mes; |
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| 286 | |
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[1866] | 287 | if ( id == -1 || buf == NULL ) |
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| 288 | return -1; |
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| 289 | |
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[1869] | 290 | if ( roar_buffer_get_data(buf, &mes) == -1 ) |
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| 291 | return -1; |
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| 292 | |
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| 293 | ROAR_WARN("midi_add_buf(id=%i, buf=%p) = ?", id, buf); |
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| 294 | ROAR_WARN("midi_add_buf(*): MIDI Message of Type 0x%.2x", mes->type); |
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| 295 | ROAR_WARN("midi_add_buf(*): Channel: %i", mes->channel); |
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| 296 | ROAR_WARN("midi_add_buf(*): flags=0x%.2x", mes->flags); |
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| 297 | ROAR_WARN("midi_add_buf(*): kk=0x%.2x, vv=0x%.2x", mes->kk, mes->vv); |
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| 298 | |
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[1866] | 299 | if ( g_midi_mess.buf == NULL ) { |
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| 300 | g_midi_mess.buf = buf; |
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| 301 | } else { |
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| 302 | roar_buffer_add(g_midi_mess.buf, buf); |
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| 303 | } |
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| 304 | |
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| 305 | return 0; |
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| 306 | } |
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| 307 | |
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[1848] | 308 | // bridges: |
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| 309 | int midi_check_bridge (int id) { |
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[1851] | 310 | |
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[1860] | 311 | ROAR_DBG("midi_check_bridge(id=%i) = ?", id); |
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[1851] | 312 | |
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| 313 | if ( id == g_midi_clock.stream ) { |
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| 314 | midi_clock_tick(); |
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| 315 | |
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| 316 | return 0; |
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| 317 | } |
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| 318 | |
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[1848] | 319 | return -1; |
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| 320 | } |
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| 321 | |
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| 322 | // clock: |
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| 323 | |
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| 324 | int midi_clock_init (void) { |
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| 325 | struct roar_stream * s; |
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| 326 | struct roar_stream_server * ss; |
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| 327 | |
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[1850] | 328 | if ( (g_midi_clock.stream = streams_new()) == -1 ) { |
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[1848] | 329 | ROAR_WARN("Error while initializing MIDI subsystem component clock"); |
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| 330 | return -1; |
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| 331 | } |
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| 332 | |
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[1850] | 333 | midi_vio_set_dummy(g_midi_clock.stream); |
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[1848] | 334 | |
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[1850] | 335 | streams_get(g_midi_clock.stream, &ss); |
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[1848] | 336 | s = ROAR_STREAM(ss); |
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| 337 | |
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| 338 | memcpy(&(s->info), g_sa, sizeof(struct roar_audio_info)); |
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| 339 | |
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[1850] | 340 | s->pos_rel_id = g_midi_clock.stream; |
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[1848] | 341 | |
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| 342 | s->info.codec = ROAR_CODEC_MIDI; |
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| 343 | ss->codec_orgi = ROAR_CODEC_MIDI; |
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| 344 | |
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| 345 | s->info.channels = 0; |
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| 346 | s->info.rate = MIDI_RATE; |
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| 347 | s->info.bits = 8; |
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| 348 | |
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[1850] | 349 | if ( streams_set_dir(g_midi_clock.stream, ROAR_DIR_BRIDGE, 1) == -1 ) { |
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[1848] | 350 | ROAR_WARN("Error while initializing MIDI subsystem component clock"); |
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| 351 | return -1; |
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| 352 | } |
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| 353 | |
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[1850] | 354 | streams_set_name(g_midi_clock.stream, "MIDI Clock"); |
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[1848] | 355 | |
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[1850] | 356 | streams_set_flag(g_midi_clock.stream, ROAR_FLAG_PRIMARY); |
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| 357 | streams_set_flag(g_midi_clock.stream, ROAR_FLAG_SYNC); |
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[1848] | 358 | |
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[1851] | 359 | midi_clock_set_bph(3600); // one tick per sec |
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| 360 | |
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| 361 | return 0; |
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| 362 | } |
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| 363 | |
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| 364 | int midi_clock_set_bph (uint_least32_t bph) { |
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| 365 | uint_least32_t sph = g_sa->rate/2 * 75 * g_sa->channels; // samples per houre |
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| 366 | |
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| 367 | g_midi_clock.bph = bph; |
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| 368 | |
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| 369 | g_midi_clock.spt = sph/bph; |
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| 370 | |
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| 371 | g_midi_clock.nt = ROAR_MATH_OVERFLOW_ADD(g_pos, g_midi_clock.spt); |
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| 372 | |
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| 373 | return 0; |
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| 374 | } |
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| 375 | |
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| 376 | int midi_clock_tick (void) { |
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| 377 | unsigned int diff; |
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| 378 | |
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| 379 | while ( g_pos >= g_midi_clock.nt ) { |
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| 380 | diff = g_pos - g_midi_clock.nt; |
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[1860] | 381 | 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] | 382 | |
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| 383 | g_midi_clock.nt = ROAR_MATH_OVERFLOW_ADD(g_midi_clock.nt, g_midi_clock.spt); |
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| 384 | |
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| 385 | if ( streams_get_flag(g_midi_clock.stream, ROAR_FLAG_SYNC) ) { |
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[1860] | 386 | ROAR_DBG("midi_clock_tick(void): TICK! (nt=%lu)", g_midi_clock.nt); |
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[1851] | 387 | } else { |
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[1860] | 388 | ROAR_DBG("midi_clock_tick(void): silent tick. (nt=%lu)", g_midi_clock.nt); |
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[1851] | 389 | } |
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| 390 | } |
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| 391 | |
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[1848] | 392 | return 0; |
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| 393 | } |
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| 394 | |
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[1845] | 395 | // CB: |
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[1843] | 396 | |
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| 397 | int midi_cb_init (void) { |
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[1751] | 398 | #ifdef _HAVE_CONSOLE |
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[1843] | 399 | struct roar_stream * s; |
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| 400 | struct roar_stream_server * ss; |
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[185] | 401 | int i; |
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| 402 | char * files[] = { |
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| 403 | "/dev/console", |
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| 404 | #ifdef __linux__ |
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| 405 | "/dev/tty0", |
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| 406 | "/dev/vc/0", |
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| 407 | #endif |
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| 408 | NULL |
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| 409 | }; |
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| 410 | |
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[1853] | 411 | g_midi_cb.console = -1; |
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| 412 | g_midi_cb.stream = -1; |
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| 413 | g_midi_cb.stoptime = 0; |
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| 414 | g_midi_cb.playing = 0; |
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[185] | 415 | |
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| 416 | for (i = 0; files[i] != NULL; i++) { |
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[1853] | 417 | if ( (g_midi_cb.console = open(files[i], O_WRONLY|O_NOCTTY, 0)) != -1 ) |
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[185] | 418 | break; |
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| 419 | } |
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| 420 | |
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[1853] | 421 | if ( g_midi_cb.console == -1 ) |
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[1843] | 422 | return -1; |
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| 423 | |
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[1853] | 424 | if ( (g_midi_cb.stream = streams_new()) == -1 ) { |
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[1843] | 425 | ROAR_WARN("Error while initializing MIDI subsystem component CB"); |
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| 426 | midi_cb_free(); |
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[187] | 427 | return -1; |
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| 428 | } |
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[1843] | 429 | |
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[1853] | 430 | midi_vio_set_dummy(g_midi_cb.stream); |
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[1848] | 431 | |
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[1853] | 432 | streams_get(g_midi_cb.stream, &ss); |
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[1843] | 433 | s = ROAR_STREAM(ss); |
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| 434 | |
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| 435 | memcpy(&(s->info), g_sa, sizeof(struct roar_audio_info)); |
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| 436 | |
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| 437 | s->pos_rel_id = -1; |
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| 438 | |
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| 439 | s->info.codec = 0; |
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| 440 | ss->codec_orgi = 0; |
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| 441 | |
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| 442 | s->info.channels = 1; |
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| 443 | s->info.rate = 1193180; |
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| 444 | s->info.bits = 8; |
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| 445 | |
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[1853] | 446 | if ( streams_set_dir(g_midi_cb.stream, ROAR_DIR_BRIDGE, 1) == -1 ) { |
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[1843] | 447 | ROAR_WARN("Error while initializing MIDI subsystem component CB"); |
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| 448 | midi_cb_free(); |
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| 449 | return -1; |
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| 450 | } |
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| 451 | |
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[1853] | 452 | streams_set_name(g_midi_cb.stream, "Console speaker bridge"); |
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[1843] | 453 | |
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[1853] | 454 | streams_set_flag(g_midi_cb.stream, ROAR_FLAG_OUTPUT); |
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| 455 | streams_set_flag(g_midi_cb.stream, ROAR_FLAG_PRIMARY); |
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| 456 | streams_set_flag(g_midi_cb.stream, ROAR_FLAG_HWMIXER); |
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[1843] | 457 | |
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| 458 | return 0; |
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[1485] | 459 | #else |
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[1853] | 460 | g_midi_cb.console = -1; |
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| 461 | g_midi_cb.stream = -1; |
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[1843] | 462 | |
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[1485] | 463 | return -1; |
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| 464 | #endif |
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[185] | 465 | } |
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| 466 | |
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[1843] | 467 | int midi_cb_free (void) { |
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[1751] | 468 | #ifdef _HAVE_CONSOLE |
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[1843] | 469 | |
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| 470 | midi_cb_stop(); |
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| 471 | |
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[1853] | 472 | if ( g_midi_cb.stream != -1 ) |
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| 473 | streams_delete(g_midi_cb.stream); |
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[1843] | 474 | |
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[1853] | 475 | if ( g_midi_cb.console != -1 ) |
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| 476 | close(g_midi_cb.console); |
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[1843] | 477 | |
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[185] | 478 | return 0; |
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[1485] | 479 | #else |
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| 480 | return -1; |
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| 481 | #endif |
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[185] | 482 | } |
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| 483 | |
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| 484 | int midi_cb_play(float t, float freq, int override) { |
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[191] | 485 | float samples_per_sec /* S/s */ = g_sa->rate * g_sa->channels; |
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| 486 | |
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[189] | 487 | /* |
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| 488 | #define MIDI_CB_NOOVERRIDE 0 |
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| 489 | #define MIDI_CB_OVERRIDE 1 |
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| 490 | */ |
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[1853] | 491 | if ( g_midi_cb.playing && override != MIDI_CB_OVERRIDE ) |
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[191] | 492 | return -1; |
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| 493 | |
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[1853] | 494 | g_midi_cb.stoptime = ROAR_MATH_OVERFLOW_ADD(g_pos, samples_per_sec*t); |
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[191] | 495 | midi_cb_start(freq); |
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[1853] | 496 | g_midi_cb.playing = 1; |
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[191] | 497 | |
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| 498 | return 0; |
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[185] | 499 | } |
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| 500 | |
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[190] | 501 | int midi_cb_update (void) { |
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[1853] | 502 | if ( !g_midi_cb.playing ) |
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[192] | 503 | return 0; |
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| 504 | |
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[1853] | 505 | if ( g_midi_cb.stoptime <= g_pos ) |
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[189] | 506 | midi_cb_stop(); |
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| 507 | |
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| 508 | return 0; |
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| 509 | } |
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| 510 | |
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[185] | 511 | int midi_cb_start(float freq) { |
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| 512 | // On linux this uses ioctl KIOCSOUND |
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[188] | 513 | #ifdef __linux__ |
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[1853] | 514 | if ( g_midi_cb.console == -1 ) |
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[188] | 515 | return -1; |
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| 516 | |
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[1853] | 517 | if ( ioctl(g_midi_cb.console, KIOCSOUND, freq == 0 ? 0 : (int)(1193180.0/freq)) == -1 ) |
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[188] | 518 | return -1; |
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| 519 | |
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| 520 | return 0; |
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| 521 | #else |
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[185] | 522 | return -1; |
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[188] | 523 | #endif |
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[185] | 524 | } |
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| 525 | |
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| 526 | int midi_cb_stop (void) { |
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| 527 | #ifdef __linux__ |
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[1853] | 528 | g_midi_cb.playing = 0; |
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[185] | 529 | return midi_cb_start(0); |
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| 530 | #else |
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| 531 | return -1; |
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| 532 | #endif |
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| 533 | } |
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| 534 | |
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[1848] | 535 | // VIO: |
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| 536 | |
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| 537 | int midi_vio_set_dummy(int stream) { |
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| 538 | struct roar_stream_server * ss; |
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| 539 | |
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| 540 | if ( streams_get(stream, &ss) == -1 ) |
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| 541 | return -1; |
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| 542 | |
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| 543 | ss->vio.read = NULL; |
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| 544 | ss->vio.write = NULL; |
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| 545 | ss->vio.lseek = NULL; |
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[1849] | 546 | ss->vio.nonblock = (int (*)(struct roar_vio_calls * vio, int state))midi_vio_ok; |
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| 547 | ss->vio.sync = (int (*)(struct roar_vio_calls * vio))midi_vio_ok; |
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[1848] | 548 | ss->vio.ctl = NULL; |
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[1849] | 549 | ss->vio.close = (int (*)(struct roar_vio_calls * vio))midi_vio_ok; |
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| 550 | |
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| 551 | return 0; |
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[1848] | 552 | } |
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| 553 | |
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| 554 | int midi_vio_ok(struct roar_vio_calls * vio, ...) { |
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| 555 | return 0; |
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| 556 | } |
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| 557 | |
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[169] | 558 | //ll |
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