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-rw-r--r--apps/midi.c237
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_);
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 15:35:57 +0000