/* -*- Mode: C ; c-basic-offset: 2 -*- */ /***************************************************************************** * * fluidjack - sf2 synth (fluid) with JACK MIDI input and JACK audio outputs * * Copyright (C) 2007 Nedko Arnaudov * * This program 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; version 2 of the License * * This program 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 this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * *****************************************************************************/ /* gcc `pkg-config --cflags --libs fluidsynth jack` main.c -o fluidjack */ #include #include #include #include #define LOG_ERROR(format, arg...) fprintf(stderr, format "\n", ## arg) #define LOG_NOTICE(format, arg...) printf(format "\n", ## arg) struct fluidjack { fluid_synth_t * synth; int sf_id; fluid_settings_t * settings; jack_client_t * jack_client; jack_port_t * in; jack_port_t * left; jack_port_t * right; }; #define fluidjack_ptr ((struct fluidjack *)context_ptr) int jack_process_cb( jack_nframes_t nframes, void * context_ptr) { int ret; float * left; float * right; void * input_buf; jack_midi_event_t input_event; jack_nframes_t input_event_count; jack_nframes_t i; jack_nframes_t offset; input_buf = jack_port_get_buffer(fluidjack_ptr->in, nframes); input_event_count = jack_midi_get_event_count(input_buf, nframes); left = (float *)jack_port_get_buffer(fluidjack_ptr->left, nframes); right = (float *)jack_port_get_buffer(fluidjack_ptr->right, nframes); offset = 0; for (i = 0; i < input_event_count; i++) { /* retrieve JACK MIDI event */ jack_midi_event_get(&input_event, input_buf, i, nframes); assert(input_event.time >= offset); if (input_event.time > offset) { /* generate audio up to event */ fluid_synth_write_float(fluidjack_ptr->synth, input_event.time - offset, left + offset, 0, 1, right + offset, 0, 1); offset = input_event.time; } if (input_event.size == 3) { if ((input_event.buffer[0] >> 4) == 0x08) { /* note off */ //LOG_NOTICE("note off"); fluid_synth_noteoff(fluidjack_ptr->synth, input_event.buffer[0] & 0x0F, input_event.buffer[1]); } else if ((input_event.buffer[0] >> 4) == 0x09) { /* note on */ //LOG_NOTICE("note on"); fluid_synth_noteon(fluidjack_ptr->synth, input_event.buffer[0] & 0x0F, input_event.buffer[1], input_event.buffer[2]); } else if ((input_event.buffer[0] >> 4) == 0x0B) { fluid_synth_cc(fluidjack_ptr->synth, input_event.buffer[0] & 0x0F, input_event.buffer[1], input_event.buffer[2]); } else if ((input_event.buffer[0] >> 4) == 0x0E) { fluid_synth_pitch_bend(fluidjack_ptr->synth, input_event.buffer[0] & 0x0F, (input_event.buffer[2] << 7) | input_event.buffer[1]); } } if (input_event.size == 2) { if ((input_event.buffer[0] >> 4) == 0x0C) { fluid_synth_program_change(fluidjack_ptr->synth, input_event.buffer[0] & 0x0F, input_event.buffer[1]); } } } if (nframes > offset) { fluid_synth_write_float(fluidjack_ptr->synth, nframes - offset, left + offset, 0, 1, right + offset, 0, 1); } return 0; } #undef fluidjack_ptr int main(int argc, char ** argv) { int ret; struct fluidjack fluidjack; jack_nframes_t sample_rate; if (argc != 2) { LOG_ERROR("Usage: fluidjack "); ret = 1; goto exit; } /* Connect to JACK (with plugin name as client name) */ fluidjack.jack_client = jack_client_open("fluidjack", JackNullOption, NULL); if (fluidjack.jack_client == NULL) { LOG_ERROR("Failed to connect to JACK."); ret = 1; goto exit; } fluidjack.settings = new_fluid_settings(); if (fluidjack.settings == NULL) { LOG_ERROR("new_fluid_settings() failed."); ret = 1; goto exit_close_jack_client; } sample_rate = jack_get_sample_rate(fluidjack.jack_client); LOG_NOTICE("Sample rate is %u", (unsigned int)sample_rate); fluid_settings_setnum(fluidjack.settings, "synth.sample-rate", sample_rate); fluidjack.synth = new_fluid_synth(fluidjack.settings); if (fluidjack.synth == NULL) { LOG_ERROR("new_fluid_synth() failed."); ret = 1; goto exit_delete_settings; } LOG_NOTICE("Loading soundfont...", argv[1]); fluidjack.sf_id = fluid_synth_sfload(fluidjack.synth, argv[1], 1); if (fluidjack.sf_id == -1) { LOG_ERROR("Soundfont loading failed."); ret = 1; goto exit_delete_synth; } ret = jack_set_process_callback(fluidjack.jack_client, &jack_process_cb, &fluidjack); if (ret != 0) { LOG_ERROR("jack_set_process_callback() failed."); ret = 1; goto exit_delete_synth; } fluidjack.in = jack_port_register(fluidjack.jack_client, "in", JACK_DEFAULT_MIDI_TYPE, JackPortIsInput, 0); if (fluidjack.in == NULL) { LOG_ERROR("Failed to register JACK MIDI input port."); ret = 1; goto exit_delete_synth; } fluidjack.left = jack_port_register(fluidjack.jack_client, "left", JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0); if (fluidjack.left == NULL) { LOG_ERROR("Failed to register JACK audio output left port."); ret = 1; goto exit_delete_synth; } fluidjack.right = jack_port_register(fluidjack.jack_client, "right", JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0); if (fluidjack.right == NULL) { LOG_ERROR("Failed to register JACK audio output right port."); ret = 1; goto exit_delete_synth; } ret = jack_activate(fluidjack.jack_client); if (ret != 0) { LOG_ERROR("jack_activate() failed."); ret = 1; goto exit_delete_synth; } LOG_NOTICE("Press Enter key to exit"); getchar(); jack_deactivate(fluidjack.jack_client); exit_delete_synth: delete_fluid_synth(fluidjack.synth); exit_delete_settings: delete_fluid_settings(fluidjack.settings); exit_close_jack_client: jack_client_close(fluidjack.jack_client); exit: return ret; }