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-rw-r--r--client/midi_client.c242
1 files changed, 0 insertions, 242 deletions
diff --git a/client/midi_client.c b/client/midi_client.c
deleted file mode 100644
index 456ec7d..0000000
--- a/client/midi_client.c
+++ /dev/null
@@ -1,242 +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_client.h"
-
-#define NOTE_EN 0x00
-#define NOTE_DE 0x01
-u_int8_t led_cmd_en[] = { 0xB0, NOTE_EN, 0x01, 0xB0, NOTE_DE, 0x00 };
-u_int8_t led_cmd_de[] = { 0xB0, NOTE_EN, 0x00, 0xB0, NOTE_DE, 0x01 };
-
-static void free_cmd_entry(void* ptr)
-{
- cmd_t* c = ptr;
- assert(c);
- free(c->buf_);
- free(c);
-}
-
-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->cmds_), free_cmd_entry);
-
- 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_enqueue_cmd(midi_t* m, const char* lang)
-{
- assert(m && lang);
-
- int len;
- const u_int8_t* src;
- if(!strcmp(lang, "en")) {
- len = sizeof(led_cmd_en);
- src = led_cmd_en;
- }
- else if(!strcmp(lang, "de")) {
- len = sizeof(led_cmd_de);
- src = led_cmd_de;
- }
- else
- return 0;
-
- cmd_t* cmd = malloc(sizeof(cmd_t));
- assert(cmd);
- cmd->len_ = len;
- assert((cmd->buf_ = malloc(cmd->len_)));
- memcpy(cmd->buf_, src, cmd->len_);
- cmd->write_idx_ = 0;
-
- slist_add(&(m->cmds_), cmd);
-
- return 0;
-}
-
-int midi_get_poll_fd_count(midi_t* m)
-{
- assert(m);
-
- 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 && pfds && npfds);
-
- 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_);
-
- if(!slist_length(&(m->cmds_))) {
- int i;
- for(i = m->in_pfds_cnt_; i < npfds; ++i)
- pfds[i].events = 0;
- }
- return (m->in_pfds_cnt_ + m->out_pfds_cnt_);
-}
-
-static int midi_enqueue_lang_switch(midi_t* m, osc_t* o, const char* lang)
-{
- return osc_switch_lang(o, lang);
-}
-
-static int midi_handle_note_on(midi_t* m, osc_t* o)
-{
- int ret = 0;
- switch(m->buf_[1]) {
- case NOTE_EN: ret = midi_enqueue_lang_switch(m, o,"en"); break;
- case NOTE_DE: ret = midi_enqueue_lang_switch(m, o, "de"); break;
- default: printf("ignoring unknown note\n"); break;
- }
- return ret;
-}
-
-static int midi_handle_note_off(midi_t* m, osc_t* o)
-{
- return 0;
-}
-
-static int midi_handle_message(midi_t* m, osc_t* o)
-{
- /* 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, o); break;
- case 0x80: ret = midi_handle_note_off(m, o); 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, osc_t* o)
-{
- 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, o);
- 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->cmds_.first_);
- cmd_t* cmd = (cmd_t*)(m->cmds_.first_->data_);
- assert(cmd);
- assert(cmd->buf_);
-
- int ret = snd_rawmidi_write(m->output_, &(cmd->buf_[cmd->write_idx_]), cmd->len_ - cmd->write_idx_);
- if(ret == -EAGAIN)
- return 0;
- if(ret < 0) {
- error(0, 0, "MIDI: cannot write to port: %s", snd_strerror(ret));
- return -1;
- }
- cmd->write_idx_ += ret;
- if(cmd->write_idx_ >= cmd->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->cmds_), cmd);
- }
-
- return 0;
-}
-
-int midi_handle_revents(midi_t* m, struct pollfd *pfds, int npfds, osc_t* o)
-{
- assert(m);
-
- if(!m->input_ || !m->output_)
- return 0;
-
- int ret = midi_handle_in_revents(m, pfds, m->in_pfds_cnt_, o);
- 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 20:34:14 +0000