[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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| 59 | return 0; |
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| 60 | } |
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| 61 | |
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[1845] | 62 | // STREAMS: |
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| 63 | |
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| 64 | int midi_check_stream (int id) { |
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[1846] | 65 | struct roar_stream * s; |
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| 66 | struct roar_stream_server * ss; |
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[1858] | 67 | struct roar_buffer * b; |
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| 68 | char * buf; |
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| 69 | ssize_t len; |
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[1859] | 70 | int i; |
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[1846] | 71 | |
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| 72 | if ( g_streams[id] == NULL ) |
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| 73 | return -1; |
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| 74 | |
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| 75 | ROAR_DBG("midi_check_stream(id=%i) = ?", id); |
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| 76 | |
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| 77 | s = ROAR_STREAM(ss = g_streams[id]); |
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| 78 | |
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[1848] | 79 | if ( s->dir == ROAR_DIR_BRIDGE ) |
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| 80 | return midi_check_bridge(id); |
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| 81 | |
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[1846] | 82 | switch (s->info.codec) { |
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[1858] | 83 | case ROAR_CODEC_MIDI: |
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| 84 | break; |
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| 85 | default: |
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| 86 | streams_delete(id); |
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| 87 | return -1; |
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| 88 | } |
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| 89 | |
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| 90 | if ( roar_buffer_new(&b, MIDI_READ_SIZE) == -1 ) { |
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| 91 | ROAR_ERR("midi_check_stream(*): Can not alloc buffer space!"); |
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| 92 | ROAR_DBG("midi_check_stream(*) = -1"); |
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| 93 | return -1; |
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| 94 | } |
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| 95 | |
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| 96 | roar_buffer_get_data(b, (void **)&buf); |
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| 97 | |
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| 98 | if ( (len = stream_vio_s_read(ss, buf, MIDI_READ_SIZE)) < 1 ) { |
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| 99 | streams_delete(id); |
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[1862] | 100 | roar_buffer_free(b); |
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[1858] | 101 | return -1; |
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| 102 | } |
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| 103 | |
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| 104 | roar_buffer_set_len(b, len); |
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| 105 | |
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[1859] | 106 | if ( stream_add_buffer(id, b) == -1 ) { |
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| 107 | roar_buffer_free(b); |
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| 108 | streams_delete(id); |
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| 109 | return -1; |
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| 110 | } |
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| 111 | |
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| 112 | for (i = 0; i < ROAR_STREAMS_MAX; i++) { |
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| 113 | if ( g_streams[i] != NULL && ROAR_STREAM(g_streams[i])->pos_rel_id == id ) { |
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| 114 | if ( ROAR_STREAM(g_streams[i])->dir == ROAR_DIR_THRU ) { |
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| 115 | if ( stream_vio_write(i, buf, len) != len ) { |
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| 116 | streams_delete(i); |
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| 117 | } |
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| 118 | } |
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[1858] | 119 | } |
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[1859] | 120 | } |
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[1858] | 121 | |
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| 122 | switch (s->info.codec) { |
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| 123 | case ROAR_CODEC_MIDI: |
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| 124 | return midi_conv_midi2mes(id); |
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| 125 | break; |
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[1846] | 126 | default: |
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| 127 | streams_delete(id); |
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| 128 | return -1; |
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| 129 | } |
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| 130 | |
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| 131 | return 0; |
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[1845] | 132 | } |
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[1846] | 133 | |
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[1845] | 134 | int midi_send_stream (int id) { |
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[1846] | 135 | struct roar_stream * s; |
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| 136 | struct roar_stream_server * ss; |
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| 137 | |
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| 138 | if ( g_streams[id] == NULL ) |
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| 139 | return -1; |
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| 140 | |
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| 141 | ROAR_DBG("midi_send_stream(id=%i) = ?", id); |
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| 142 | |
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| 143 | s = ROAR_STREAM(ss = g_streams[id]); |
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| 144 | |
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| 145 | switch (s->info.codec) { |
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| 146 | default: |
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| 147 | streams_delete(id); |
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| 148 | return -1; |
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| 149 | } |
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| 150 | |
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| 151 | return 0; |
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[1845] | 152 | } |
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| 153 | |
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[1858] | 154 | int midi_conv_midi2mes (int id) { |
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[1863] | 155 | unsigned char * data; |
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| 156 | struct roar_stream * s; |
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| 157 | struct roar_stream_server * ss; |
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| 158 | struct roar_buffer * buf = NULL; |
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| 159 | struct midi_message * mes = NULL; |
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| 160 | size_t need = 0, have = 0; |
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| 161 | int alive = 1; |
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| 162 | |
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| 163 | if ( g_streams[id] == NULL ) |
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| 164 | return -1; |
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| 165 | |
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| 166 | ROAR_DBG("midi_conv_midi2mes(id=%i) = ?", id); |
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| 167 | |
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| 168 | s = ROAR_STREAM(ss = g_streams[id]); |
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| 169 | |
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| 170 | while (ss->buffer != NULL && alive) { |
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| 171 | if ( roar_buffer_get_data(ss->buffer, (void**)&data) == -1 ) { |
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| 172 | alive = 0; |
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| 173 | continue; |
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| 174 | } |
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| 175 | |
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| 176 | if ( roar_buffer_get_len(ss->buffer, &have) == -1 ) { |
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| 177 | alive = 0; |
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| 178 | continue; |
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| 179 | } |
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| 180 | |
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| 181 | while (have && alive) { |
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| 182 | printf("%.2x=", *data); |
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| 183 | if ( *data & 0x80 ) { |
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[1865] | 184 | if ( buf != NULL ) { |
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| 185 | if ( g_midi_mess.buf == NULL ) { |
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| 186 | g_midi_mess.buf = buf; |
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| 187 | } else { |
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| 188 | roar_buffer_add(g_midi_mess.buf, buf); |
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| 189 | } |
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| 190 | buf = NULL; |
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| 191 | } |
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| 192 | |
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[1863] | 193 | need = 0; |
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| 194 | printf("S\n"); |
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| 195 | if ( midi_new_bufmes(&buf, &mes) == -1 ) { |
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| 196 | alive = 0; |
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| 197 | continue; |
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| 198 | } |
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[1865] | 199 | |
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| 200 | if (*data == MIDI_TYPE_CLOCK_TICK || *data == MIDI_TYPE_CLOCK_START || *data == MIDI_TYPE_CLOCK_STOP ) { |
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| 201 | mes->type = *data; |
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| 202 | } else { |
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| 203 | mes->type = *data & 0xF0; |
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| 204 | mes->channel = *data & 0x0F; |
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| 205 | switch (*data & 0xF0) { |
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| 206 | case MIDI_TYPE_NOTE_ON: |
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| 207 | case MIDI_TYPE_NOTE_OFF: |
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| 208 | need = 2; |
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| 209 | break; |
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| 210 | case MIDI_TYPE_PA: |
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| 211 | need = 2; |
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| 212 | break; |
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| 213 | case MIDI_TYPE_CONTROLER: |
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| 214 | need = 2; |
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| 215 | break; |
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| 216 | case MIDI_TYPE_PROGRAM: |
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| 217 | need = 1; |
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| 218 | break; |
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| 219 | case MIDI_TYPE_MA: |
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| 220 | need = 1; |
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| 221 | break; |
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| 222 | case MIDI_TYPE_PB: |
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| 223 | case MIDI_TYPE_SYSEX: |
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| 224 | need = 1; |
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| 225 | break; |
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| 226 | } |
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| 227 | } |
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| 228 | |
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[1863] | 229 | } else { |
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| 230 | printf("D\n"); |
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| 231 | if ( need ) |
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| 232 | need--; |
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| 233 | } |
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| 234 | data++; |
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| 235 | have--; |
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| 236 | } |
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| 237 | |
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[1865] | 238 | if ( need ) { |
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| 239 | ROAR_ERR("midi_conv_midi2mes(*): FIXME: BUG!!! Need to restore buffer here with corrected length"); |
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| 240 | } else if ( !have ) { |
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[1863] | 241 | roar_buffer_next(&(ss->buffer)); |
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| 242 | } |
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| 243 | |
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| 244 | if ( need && buf != NULL ) { |
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| 245 | roar_buffer_free(buf); |
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| 246 | buf = NULL; |
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| 247 | } else if ( buf != NULL ) { |
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| 248 | if ( g_midi_mess.buf == NULL ) { |
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| 249 | g_midi_mess.buf = buf; |
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| 250 | } else { |
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| 251 | roar_buffer_add(g_midi_mess.buf, buf); |
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| 252 | } |
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| 253 | |
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| 254 | buf = NULL; |
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| 255 | } |
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| 256 | } |
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| 257 | |
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| 258 | return 0; |
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[1858] | 259 | } |
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| 260 | |
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| 261 | int midi_conv_mes2midi (int id) { |
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| 262 | return -1; |
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| 263 | } |
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| 264 | |
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[1863] | 265 | int midi_new_bufmes (struct roar_buffer ** buf, struct midi_message ** mes) { |
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| 266 | if ( buf == NULL || mes == NULL ) |
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| 267 | return -1; |
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| 268 | |
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| 269 | *buf = *mes = NULL; |
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| 270 | |
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| 271 | if ( roar_buffer_new(buf, sizeof(struct midi_message)) == -1 ) |
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| 272 | return -1; |
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| 273 | |
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| 274 | if ( roar_buffer_get_data(*buf, (void**)mes) == -1 ) { |
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| 275 | roar_buffer_free(*buf); |
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| 276 | *buf = *mes = NULL; |
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| 277 | return -1; |
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| 278 | } |
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| 279 | |
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| 280 | memset((void*)*mes, 0, sizeof(struct midi_message)); |
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| 281 | |
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| 282 | (*mes)->type = MIDI_TYPE_NONE; |
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| 283 | |
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| 284 | return 0; |
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| 285 | } |
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| 286 | |
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[1848] | 287 | // bridges: |
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| 288 | int midi_check_bridge (int id) { |
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[1851] | 289 | |
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[1860] | 290 | ROAR_DBG("midi_check_bridge(id=%i) = ?", id); |
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[1851] | 291 | |
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| 292 | if ( id == g_midi_clock.stream ) { |
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| 293 | midi_clock_tick(); |
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| 294 | |
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| 295 | return 0; |
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| 296 | } |
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| 297 | |
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[1848] | 298 | return -1; |
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| 299 | } |
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| 300 | |
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| 301 | // clock: |
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| 302 | |
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| 303 | int midi_clock_init (void) { |
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| 304 | struct roar_stream * s; |
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| 305 | struct roar_stream_server * ss; |
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| 306 | |
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[1850] | 307 | if ( (g_midi_clock.stream = streams_new()) == -1 ) { |
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[1848] | 308 | ROAR_WARN("Error while initializing MIDI subsystem component clock"); |
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| 309 | return -1; |
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| 310 | } |
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| 311 | |
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[1850] | 312 | midi_vio_set_dummy(g_midi_clock.stream); |
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[1848] | 313 | |
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[1850] | 314 | streams_get(g_midi_clock.stream, &ss); |
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[1848] | 315 | s = ROAR_STREAM(ss); |
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| 316 | |
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| 317 | memcpy(&(s->info), g_sa, sizeof(struct roar_audio_info)); |
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| 318 | |
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[1850] | 319 | s->pos_rel_id = g_midi_clock.stream; |
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[1848] | 320 | |
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| 321 | s->info.codec = ROAR_CODEC_MIDI; |
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| 322 | ss->codec_orgi = ROAR_CODEC_MIDI; |
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| 323 | |
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| 324 | s->info.channels = 0; |
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| 325 | s->info.rate = MIDI_RATE; |
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| 326 | s->info.bits = 8; |
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| 327 | |
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[1850] | 328 | if ( streams_set_dir(g_midi_clock.stream, ROAR_DIR_BRIDGE, 1) == -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 | streams_set_name(g_midi_clock.stream, "MIDI Clock"); |
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[1848] | 334 | |
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[1850] | 335 | streams_set_flag(g_midi_clock.stream, ROAR_FLAG_PRIMARY); |
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| 336 | streams_set_flag(g_midi_clock.stream, ROAR_FLAG_SYNC); |
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[1848] | 337 | |
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[1851] | 338 | midi_clock_set_bph(3600); // one tick per sec |
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| 339 | |
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| 340 | return 0; |
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| 341 | } |
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| 342 | |
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| 343 | int midi_clock_set_bph (uint_least32_t bph) { |
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| 344 | uint_least32_t sph = g_sa->rate/2 * 75 * g_sa->channels; // samples per houre |
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| 345 | |
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| 346 | g_midi_clock.bph = bph; |
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| 347 | |
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| 348 | g_midi_clock.spt = sph/bph; |
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| 349 | |
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| 350 | g_midi_clock.nt = ROAR_MATH_OVERFLOW_ADD(g_pos, g_midi_clock.spt); |
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| 351 | |
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| 352 | return 0; |
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| 353 | } |
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| 354 | |
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| 355 | int midi_clock_tick (void) { |
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| 356 | unsigned int diff; |
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| 357 | |
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| 358 | while ( g_pos >= g_midi_clock.nt ) { |
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| 359 | diff = g_pos - g_midi_clock.nt; |
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[1860] | 360 | 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] | 361 | |
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| 362 | g_midi_clock.nt = ROAR_MATH_OVERFLOW_ADD(g_midi_clock.nt, g_midi_clock.spt); |
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| 363 | |
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| 364 | if ( streams_get_flag(g_midi_clock.stream, ROAR_FLAG_SYNC) ) { |
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[1860] | 365 | ROAR_DBG("midi_clock_tick(void): TICK! (nt=%lu)", g_midi_clock.nt); |
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[1851] | 366 | } else { |
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[1860] | 367 | ROAR_DBG("midi_clock_tick(void): silent tick. (nt=%lu)", g_midi_clock.nt); |
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[1851] | 368 | } |
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| 369 | } |
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| 370 | |
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[1848] | 371 | return 0; |
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| 372 | } |
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| 373 | |
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[1845] | 374 | // CB: |
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[1843] | 375 | |
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| 376 | int midi_cb_init (void) { |
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[1751] | 377 | #ifdef _HAVE_CONSOLE |
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[1843] | 378 | struct roar_stream * s; |
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| 379 | struct roar_stream_server * ss; |
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[185] | 380 | int i; |
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| 381 | char * files[] = { |
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| 382 | "/dev/console", |
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| 383 | #ifdef __linux__ |
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| 384 | "/dev/tty0", |
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| 385 | "/dev/vc/0", |
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| 386 | #endif |
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| 387 | NULL |
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| 388 | }; |
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| 389 | |
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[1853] | 390 | g_midi_cb.console = -1; |
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| 391 | g_midi_cb.stream = -1; |
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| 392 | g_midi_cb.stoptime = 0; |
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| 393 | g_midi_cb.playing = 0; |
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[185] | 394 | |
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| 395 | for (i = 0; files[i] != NULL; i++) { |
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[1853] | 396 | if ( (g_midi_cb.console = open(files[i], O_WRONLY|O_NOCTTY, 0)) != -1 ) |
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[185] | 397 | break; |
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| 398 | } |
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| 399 | |
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[1853] | 400 | if ( g_midi_cb.console == -1 ) |
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[1843] | 401 | return -1; |
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| 402 | |
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[1853] | 403 | if ( (g_midi_cb.stream = streams_new()) == -1 ) { |
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[1843] | 404 | ROAR_WARN("Error while initializing MIDI subsystem component CB"); |
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| 405 | midi_cb_free(); |
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[187] | 406 | return -1; |
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| 407 | } |
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[1843] | 408 | |
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[1853] | 409 | midi_vio_set_dummy(g_midi_cb.stream); |
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[1848] | 410 | |
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[1853] | 411 | streams_get(g_midi_cb.stream, &ss); |
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[1843] | 412 | s = ROAR_STREAM(ss); |
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| 413 | |
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| 414 | memcpy(&(s->info), g_sa, sizeof(struct roar_audio_info)); |
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| 415 | |
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| 416 | s->pos_rel_id = -1; |
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| 417 | |
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| 418 | s->info.codec = 0; |
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| 419 | ss->codec_orgi = 0; |
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| 420 | |
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| 421 | s->info.channels = 1; |
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| 422 | s->info.rate = 1193180; |
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| 423 | s->info.bits = 8; |
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| 424 | |
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[1853] | 425 | if ( streams_set_dir(g_midi_cb.stream, ROAR_DIR_BRIDGE, 1) == -1 ) { |
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[1843] | 426 | ROAR_WARN("Error while initializing MIDI subsystem component CB"); |
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| 427 | midi_cb_free(); |
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| 428 | return -1; |
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| 429 | } |
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| 430 | |
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[1853] | 431 | streams_set_name(g_midi_cb.stream, "Console speaker bridge"); |
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[1843] | 432 | |
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[1853] | 433 | streams_set_flag(g_midi_cb.stream, ROAR_FLAG_OUTPUT); |
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| 434 | streams_set_flag(g_midi_cb.stream, ROAR_FLAG_PRIMARY); |
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| 435 | streams_set_flag(g_midi_cb.stream, ROAR_FLAG_HWMIXER); |
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[1843] | 436 | |
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| 437 | return 0; |
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[1485] | 438 | #else |
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[1853] | 439 | g_midi_cb.console = -1; |
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| 440 | g_midi_cb.stream = -1; |
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[1843] | 441 | |
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[1485] | 442 | return -1; |
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| 443 | #endif |
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[185] | 444 | } |
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| 445 | |
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[1843] | 446 | int midi_cb_free (void) { |
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[1751] | 447 | #ifdef _HAVE_CONSOLE |
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[1843] | 448 | |
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| 449 | midi_cb_stop(); |
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| 450 | |
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[1853] | 451 | if ( g_midi_cb.stream != -1 ) |
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| 452 | streams_delete(g_midi_cb.stream); |
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[1843] | 453 | |
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[1853] | 454 | if ( g_midi_cb.console != -1 ) |
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| 455 | close(g_midi_cb.console); |
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[1843] | 456 | |
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[185] | 457 | return 0; |
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[1485] | 458 | #else |
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| 459 | return -1; |
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| 460 | #endif |
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[185] | 461 | } |
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| 462 | |
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| 463 | int midi_cb_play(float t, float freq, int override) { |
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[191] | 464 | float samples_per_sec /* S/s */ = g_sa->rate * g_sa->channels; |
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| 465 | |
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[189] | 466 | /* |
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| 467 | #define MIDI_CB_NOOVERRIDE 0 |
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| 468 | #define MIDI_CB_OVERRIDE 1 |
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| 469 | */ |
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[1853] | 470 | if ( g_midi_cb.playing && override != MIDI_CB_OVERRIDE ) |
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[191] | 471 | return -1; |
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| 472 | |
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[1853] | 473 | g_midi_cb.stoptime = ROAR_MATH_OVERFLOW_ADD(g_pos, samples_per_sec*t); |
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[191] | 474 | midi_cb_start(freq); |
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[1853] | 475 | g_midi_cb.playing = 1; |
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[191] | 476 | |
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| 477 | return 0; |
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[185] | 478 | } |
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| 479 | |
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[190] | 480 | int midi_cb_update (void) { |
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[1853] | 481 | if ( !g_midi_cb.playing ) |
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[192] | 482 | return 0; |
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| 483 | |
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[1853] | 484 | if ( g_midi_cb.stoptime <= g_pos ) |
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[189] | 485 | midi_cb_stop(); |
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| 486 | |
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| 487 | return 0; |
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| 488 | } |
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| 489 | |
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[185] | 490 | int midi_cb_start(float freq) { |
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| 491 | // On linux this uses ioctl KIOCSOUND |
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[188] | 492 | #ifdef __linux__ |
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[1853] | 493 | if ( g_midi_cb.console == -1 ) |
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[188] | 494 | return -1; |
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| 495 | |
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[1853] | 496 | if ( ioctl(g_midi_cb.console, KIOCSOUND, freq == 0 ? 0 : (int)(1193180.0/freq)) == -1 ) |
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[188] | 497 | return -1; |
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| 498 | |
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| 499 | return 0; |
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| 500 | #else |
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[185] | 501 | return -1; |
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[188] | 502 | #endif |
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[185] | 503 | } |
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| 504 | |
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| 505 | int midi_cb_stop (void) { |
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| 506 | #ifdef __linux__ |
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[1853] | 507 | g_midi_cb.playing = 0; |
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[185] | 508 | return midi_cb_start(0); |
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| 509 | #else |
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| 510 | return -1; |
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| 511 | #endif |
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| 512 | } |
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| 513 | |
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[1848] | 514 | // VIO: |
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| 515 | |
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| 516 | int midi_vio_set_dummy(int stream) { |
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| 517 | struct roar_stream_server * ss; |
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| 518 | |
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| 519 | if ( streams_get(stream, &ss) == -1 ) |
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| 520 | return -1; |
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| 521 | |
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| 522 | ss->vio.read = NULL; |
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| 523 | ss->vio.write = NULL; |
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| 524 | ss->vio.lseek = NULL; |
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[1849] | 525 | ss->vio.nonblock = (int (*)(struct roar_vio_calls * vio, int state))midi_vio_ok; |
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| 526 | ss->vio.sync = (int (*)(struct roar_vio_calls * vio))midi_vio_ok; |
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[1848] | 527 | ss->vio.ctl = NULL; |
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[1849] | 528 | ss->vio.close = (int (*)(struct roar_vio_calls * vio))midi_vio_ok; |
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| 529 | |
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| 530 | return 0; |
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[1848] | 531 | } |
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| 532 | |
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| 533 | int midi_vio_ok(struct roar_vio_calls * vio, ...) { |
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| 534 | return 0; |
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| 535 | } |
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| 536 | |
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[169] | 537 | //ll |
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