diff options
author | Christian Pointner <equinox@spreadspace.org> | 2015-10-12 06:54:55 +0200 |
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committer | Christian Pointner <equinox@spreadspace.org> | 2015-10-12 06:54:55 +0200 |
commit | 24714dcba8a4b4717251f320570653e1cebf029a (patch) | |
tree | c23e643005b951e0c714e045312099cc34879a9d /apps/midi.c | |
parent | added command line parser (diff) |
moved apps to server
Diffstat (limited to 'apps/midi.c')
-rw-r--r-- | apps/midi.c | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/apps/midi.c b/apps/midi.c deleted file mode 100644 index 6ef5775..0000000 --- a/apps/midi.c +++ /dev/null @@ -1,237 +0,0 @@ -/* - * dolmetschctl - * - * - * Copyright (C) 2015 Christian Pointner <equinox@spreadspace.org> - * - * This file is part of dolmetschctl. - * - * dolmetschctl is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * any later version. - * - * dolmetschctl is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with dolmetschctl. If not, see <http://www.gnu.org/licenses/>. - */ - -#include "config.h" - -#include <stdio.h> -#include <error.h> -#include <poll.h> -#include <assert.h> - -#include "midi.h" - -#define NOTE_EN 0x00 -#define NOTE_DE 0x01 -u_int8_t done_data_en[] = { 0xB0, NOTE_EN, 0x01, 0xB0, NOTE_DE, 0x00 }; -u_int8_t done_data_de[] = { 0xB0, NOTE_EN, 0x00, 0xB0, NOTE_DE, 0x01 }; - -int midi_init(midi_t* m, const char* device) -{ - assert(m != NULL); - - m->input_ = NULL; - m->output_ = NULL; - memset(m->buf_, 0, sizeof(m->buf_)); - m->read_idx_ = 0; - - slist_init(&(m->done_data_), free); - - if(device) { - int ret = snd_rawmidi_open(&(m->input_), &(m->output_), device, SND_RAWMIDI_NONBLOCK); - if(ret < 0) { - error(0, 0, "MIDI: cannot open port '%s': %s", device, snd_strerror(ret)); - return ret; - } - } - - return 0; -} - -int midi_get_poll_fd_count(midi_t* m) -{ - assert(m); - - if(!m->input_ || !m->output_) - return 0; - - m->in_pfds_cnt_ = snd_rawmidi_poll_descriptors_count(m->input_); - assert(m->in_pfds_cnt_ > 0); - m->out_pfds_cnt_ = snd_rawmidi_poll_descriptors_count(m->output_); - assert(m->out_pfds_cnt_ > 0); - - return (m->in_pfds_cnt_ + m->out_pfds_cnt_); -} - -int midi_get_poll_fds(midi_t* m, struct pollfd *pfds, int npfds) -{ - assert(m); - - if(!m->input_ || !m->output_) - return 0; - - snd_rawmidi_poll_descriptors(m->input_, pfds, m->in_pfds_cnt_); - snd_rawmidi_poll_descriptors(m->output_, &(pfds[m->in_pfds_cnt_]), npfds - m->in_pfds_cnt_); - - int pending_data = 0; - if(m->done_data_.first_) { - midi_done_data_t* d = (midi_done_data_t*)(m->done_data_.first_->data_); - if(d->active_) - pending_data = 1; - } - if(!pending_data) { - int i; - for(i = m->in_pfds_cnt_; i < npfds; ++i) - pfds[i].events = 0; - } - return (m->in_pfds_cnt_ + m->out_pfds_cnt_); -} - -void midi_lang_switch_done(void* data) -{ - assert(data); - midi_done_data_t* d = data; - d->active_ = 1; -} - -static int midi_enqueue_lang_switch(midi_t* m, mixer_t* x, const char* lang, const u_int8_t* buf, int len) -{ - midi_done_data_t* done_data = malloc(sizeof(midi_done_data_t)); - assert(done_data); - done_data->self_ = m; - done_data->active_ = 0; - done_data->buf_ = buf; - done_data->len_ = len; - done_data->write_idx_ = 0; - assert(slist_add(&(m->done_data_), done_data)); - - return mixer_switch_lang(x, lang, &midi_lang_switch_done, done_data); -} - -static int midi_handle_note_on(midi_t* m, mixer_t* x) -{ - int ret = 0; - switch(m->buf_[1]) { - case NOTE_EN: ret = midi_enqueue_lang_switch(m, x, "en", done_data_en, sizeof(done_data_en)); break; - case NOTE_DE: ret = midi_enqueue_lang_switch(m, x, "de", done_data_de, sizeof(done_data_de)); break; - default: printf("ignoring unknown note\n"); break; - } - return ret; -} - -static int midi_handle_note_off(midi_t* m, mixer_t* x) -{ - return 0; -} - -static int midi_handle_message(midi_t* m, mixer_t* x) -{ - /* int i; */ - /* printf("MIDI: "); */ - /* for (i = 0; i < sizeof(m->buf_); ++i) */ - /* printf("%02X%c", m->buf_[i], (i >= (sizeof(m->buf_)-1)) ? '\n' : ' '); */ - - int ret = 0; - switch(m->buf_[0]) { - case 0x90: ret = midi_handle_note_on(m, x); break; - case 0x80: ret = midi_handle_note_off(m, x); break; - default: printf("ignoring unknown midi command\n"); break; - } - - return ret; -} - -static int midi_handle_in_revents(midi_t* m, struct pollfd *pfds, int npfds, mixer_t* x) -{ - int err; - unsigned short revents; - if((err = snd_rawmidi_poll_descriptors_revents(m->input_, pfds, npfds, &revents)) < 0) { - error(0, 0, "MIDI: cannot get poll events: %s", snd_strerror(errno)); - return -1; - } - if(pfds[0].revents & (POLLERR | POLLHUP | POLLNVAL)) { - error(0, 0, "MIDI: got POLLERR, POLLHUP or POLLNVAL"); - return -1; - } - if(!(revents & POLLIN)) - return 0; - - int ret = snd_rawmidi_read(m->input_, &(m->buf_[m->read_idx_]), sizeof(m->buf_) - m->read_idx_); - if(ret == -EAGAIN) - return 0; - if(ret < 0) { - error(0, 0, "MIDI: cannot read from midi port: %s", snd_strerror(ret)); - return -1; - } - m->read_idx_ += ret; - if(m->read_idx_ >= sizeof(m->buf_)) { - ret = midi_handle_message(m, x); - memset(m->buf_, 0, sizeof(m->buf_)); - m->read_idx_ = 0; - return ret; - } - - return ret; -} - -static int midi_handle_out_revents(midi_t* m, struct pollfd *pfds, int npfds) -{ - int err; - unsigned short revents; - if((err = snd_rawmidi_poll_descriptors_revents(m->output_, pfds, npfds, &revents)) < 0) { - error(0, 0, "MIDI: cannot get poll events: %s", snd_strerror(errno)); - return -1; - } - if(pfds[0].revents & (POLLERR | POLLHUP | POLLNVAL)) { - error(0, 0, "MIDI: got POLLERR, POLLHUP or POLLNVAL"); - return -1; - } - if(!(revents & POLLOUT)) - return 0; - - assert(m->done_data_.first_); - midi_done_data_t* done_data = (midi_done_data_t*)(m->done_data_.first_->data_); - assert(done_data); - assert(done_data->active_); - assert(done_data->buf_); - - int ret = snd_rawmidi_write(m->output_, &(done_data->buf_[done_data->write_idx_]), done_data->len_ - done_data->write_idx_); - if(ret == -EAGAIN) - return 0; - if(ret < 0) { - error(0, 0, "MIDI: cannot write to port: %s", snd_strerror(ret)); - return -1; - } - done_data->write_idx_ += ret; - if(done_data->write_idx_ >= done_data->len_) { - if((err = snd_rawmidi_drain(m->output_)) < 0) { - error(0, 0, "MIDI: cannot drain output: %s", snd_strerror(err)); - return -1; - } - slist_remove(&(m->done_data_), done_data); - } - - return 0; -} - -int midi_handle_revents(midi_t* m, struct pollfd *pfds, int npfds, mixer_t* x) -{ - assert(m); - - if(!m->input_ || !m->output_) - return 0; - - int ret = midi_handle_in_revents(m, pfds, m->in_pfds_cnt_, x); - if(ret) - return ret; - - return midi_handle_out_revents(m, &(pfds[m->in_pfds_cnt_]), m->out_pfds_cnt_); -} |