439 lines
14 KiB
C
439 lines
14 KiB
C
#include <log.h>
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#include <stdio.h>
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#include "arr.h"
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#include "config.h"
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#include "config_file.h"
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#include "file.h"
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#include "midi.h"
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#include "rand.h"
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#include "state.h"
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#include "tempo.h"
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#include "types.h"
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StateConfig state_parse_config(ConfigFile config) {
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unsigned int i, j, offset, count;
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StateConfig state_config;
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char name[256];
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state_config.select_page_codes.length =
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config_file_get_int(config, "SELECT_PAGE_COUNT", 0);
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for (i = 0; i < state_config.select_page_codes.length; i++) {
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sprintf(name, "SELECT_PAGE_%d", i + 1);
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state_config.select_page_codes.values[i] =
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config_file_get_int(config, name, UNSET_MIDI_CODE);
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}
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state_config.select_item_codes.length =
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config_file_get_int(config, "SELECT_ITEM_COUNT", 0);
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for (i = 0; i < state_config.select_item_codes.length; i++) {
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sprintf(name, "SELECT_ITEM_%d", i + 1);
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state_config.select_item_codes.values[i] =
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config_file_get_int(config, name, UNSET_MIDI_CODE);
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}
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state_config.state_max = state_config.select_page_codes.length *
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state_config.select_item_codes.length;
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state_config.select_frag_codes.length =
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config_file_get_int(config, "FRAG_COUNT", 1);
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for (i = 0; i < state_config.select_frag_codes.length; i++) {
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sprintf(name, "SELECT_FRAG_%d", i + 1);
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state_config.select_frag_codes.values[i] =
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config_file_get_int(config, name, UNSET_MIDI_CODE);
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}
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state_config.midi_active_counts.length = state_config.midi_counts.length =
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state_config.midi_active_offsets.length =
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state_config.midi_offsets.length =
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state_config.values_offsets.length =
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config_file_get_int(config, "MIDI_COUNT", 0);
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count = 0;
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for (i = 0; i < state_config.midi_active_counts.length; i++) {
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sprintf(name, "MIDI_%d_ACTIVE_COUNT", i + 1);
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state_config.midi_active_counts.values[i] =
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config_file_get_int(config, name, 1);
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state_config.midi_active_offsets.values[i] = count;
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count += state_config.midi_active_counts.values[i];
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}
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state_config.midi_active_codes.length = count;
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for (i = 0; i < state_config.midi_active_counts.length; i++) {
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for (j = 0; j < state_config.midi_active_counts.values[i]; j++) {
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sprintf(name, "MIDI_%d_ACTIVE_%d", i + 1, j + 1);
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state_config.midi_active_codes
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.values[state_config.midi_active_offsets.values[i] + j] =
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config_file_get_int(config, name, UNSET_MIDI_CODE);
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}
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}
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count = 0;
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offset = 0;
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for (i = 0; i < state_config.midi_counts.length; i++) {
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sprintf(name, "MIDI_%d_COUNT", i + 1);
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state_config.midi_counts.values[i] = config_file_get_int(config, name, 0);
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state_config.midi_offsets.values[i] = count;
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state_config.values_offsets.values[i] = offset;
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offset += state_config.midi_counts.values[i] *
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state_config.midi_active_counts.values[i];
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count += state_config.midi_counts.values[i];
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}
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state_config.midi_codes.length = count * 3;
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for (i = 0; i < state_config.midi_counts.length; i++) {
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offset = state_config.midi_offsets.values[i];
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for (j = 0; j < state_config.midi_counts.values[i]; j++) {
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sprintf(name, "MIDI_%d_%d_X", i + 1, j + 1);
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state_config.midi_codes.values[(offset + j) * 3] =
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config_file_get_int(config, name, UNSET_MIDI_CODE);
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sprintf(name, "MIDI_%d_%d_Y", i + 1, j + 1);
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state_config.midi_codes.values[(offset + j) * 3 + 1] =
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config_file_get_int(config, name, UNSET_MIDI_CODE);
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sprintf(name, "MIDI_%d_%d_Z", i + 1, j + 1);
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state_config.midi_codes.values[(offset + j) * 3 + 2] =
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config_file_get_int(config, name, UNSET_MIDI_CODE);
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}
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}
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state_config.fader_codes.length =
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config_file_get_int(config, "FADER_COUNT", 0);
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for (i = 0; i < state_config.fader_codes.length; i++) {
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sprintf(name, "FADER_%d", i + 1);
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state_config.fader_codes.values[i] =
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config_file_get_int(config, name, UNSET_MIDI_CODE);
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}
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state_config.tap_tempo_code =
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config_file_get_int(config, "TAP_TEMPO", UNSET_MIDI_CODE);
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return state_config;
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}
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static void safe_midi_write(MidiDevice midi, unsigned int code,
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unsigned char value) {
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if (code != UNSET_MIDI_CODE) {
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midi_write(midi, code, value);
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}
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}
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static void update_page(SharedContext *context, StateConfig state_config,
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MidiDevice midi) {
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unsigned int i, page_item_min, page_item_max;
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// SHOW PAGE
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for (i = 0; i < state_config.select_page_codes.length; i++) {
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safe_midi_write(midi, state_config.select_page_codes.values[i],
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i == context->page ? MIDI_MAX : 0);
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}
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// SHOW PAGE ITEM
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page_item_min = state_config.select_item_codes.length * context->page;
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page_item_max = page_item_min + state_config.select_item_codes.length;
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if (context->state.values[context->selected] >= page_item_min &&
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context->state.values[context->selected] < page_item_max) {
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for (i = 0; i < state_config.select_item_codes.length; i++) {
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safe_midi_write(midi, state_config.select_item_codes.values[i],
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i == context->state.values[context->selected] -
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page_item_min
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? MIDI_MAX
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: 0);
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}
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} else {
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for (i = 0; i < state_config.select_item_codes.length; i++) {
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safe_midi_write(midi, state_config.select_item_codes.values[i], 0);
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}
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}
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}
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static void update_active(SharedContext *context, StateConfig state_config,
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MidiDevice midi) {
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unsigned int i, j, k;
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for (i = 0; i < state_config.midi_active_counts.length; i++) {
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for (j = 0; j < state_config.midi_active_counts.values[i]; j++) {
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k = state_config.midi_active_offsets.values[i] + j;
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safe_midi_write(midi, state_config.midi_active_codes.values[k],
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context->active[i] == j ? MIDI_MAX : 0);
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}
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}
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}
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static void update_values(SharedContext *context, StateConfig state_config,
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MidiDevice midi) {
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unsigned int i, j, k, part;
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for (i = 0; i < state_config.midi_codes.length; i++) {
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j = i / 3;
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part = arr_uint_remap_index(state_config.midi_offsets, &j);
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k = state_config.values_offsets.values[part] +
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context->active[part] * state_config.midi_counts.values[part] + j;
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safe_midi_write(midi, state_config.midi_codes.values[i],
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context->values[k][i % 3] * MIDI_MAX);
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}
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}
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void state_apply_event(SharedContext *context, StateConfig state_config,
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MidiDevice midi, unsigned char code,
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unsigned char value) {
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unsigned int i, j, k, part;
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bool found;
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found = false;
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// PAGE CHANGE
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i = arr_uint_index_of(state_config.select_page_codes, code);
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if (i != ARRAY_NOT_FOUND) {
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found = true;
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if (value > 0) {
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context->page = i;
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update_page(context, state_config, midi);
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}
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}
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// TARGET CHANGE
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i = arr_uint_index_of(state_config.select_frag_codes, code);
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if (i != ARRAY_NOT_FOUND) {
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found = true;
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if (value > 0) {
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context->selected = i;
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update_page(context, state_config, midi);
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}
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}
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// ITEM CHANGE
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i = arr_uint_index_of(state_config.select_item_codes, code);
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if (i != ARRAY_NOT_FOUND) {
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found = true;
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if (value > 0) {
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context->state.values[context->selected] =
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context->page * state_config.select_item_codes.length + i;
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update_page(context, state_config, midi);
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}
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}
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// ACTIVE CHANGE
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i = arr_uint_index_of(state_config.midi_active_codes, code);
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if (i != ARRAY_NOT_FOUND) {
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found = true;
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if (value > 0) {
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part = arr_uint_remap_index(state_config.midi_active_offsets, &i);
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context->active[part] = i;
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update_active(context, state_config, midi);
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update_values(context, state_config, midi);
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}
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}
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// VALUE CHANGE
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i = arr_uint_index_of(state_config.midi_codes, code);
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if (i != ARRAY_NOT_FOUND) {
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found = true;
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j = i / 3;
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part = arr_uint_remap_index(state_config.midi_offsets, &j);
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k = state_config.values_offsets.values[part] +
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context->active[part] * state_config.midi_counts.values[part] + j;
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if (arr_uint_index_of(state_config.fader_codes, code) != ARRAY_NOT_FOUND) {
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context->values[k][i % 3] = (float)value / MIDI_MAX;
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} else if (value > 0) {
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if (context->values[k][i % 3] > 0.5) {
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context->values[k][i % 3] = 0;
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midi_write(midi, code, 0);
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} else {
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context->values[k][i % 3] = 1;
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midi_write(midi, code, MIDI_MAX);
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}
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}
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}
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if (code == state_config.tap_tempo_code) {
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found = true;
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midi_write(midi, code, value);
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if (value > 0) {
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tempo_tap(&context->tempo);
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}
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}
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if (!found) {
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log_trace("unknown midi: %d %d", code, value);
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midi_write(midi, code, value);
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} else {
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log_trace("midi: %d %d", code, value);
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}
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}
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bool state_background_midi_write(SharedContext *context,
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StateConfig state_config, MidiDevice midi) {
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pid_t pid;
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bool beat_active, last_active, change, last_change;
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pid = fork();
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if (pid < 0) {
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log_error("Could not create subprocess");
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return false;
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}
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if (pid == 0) {
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return true;
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}
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log_info("(state) background writing started (pid: %d)", pid);
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update_page(context, state_config, midi);
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update_active(context, state_config, midi);
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update_values(context, state_config, midi);
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last_active = false;
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last_change = false;
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while (!context->stop) {
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beat_active = tempo_progress(context->tempo, 1.0) < 0.25;
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if (beat_active != last_active) {
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safe_midi_write(midi, state_config.tap_tempo_code,
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beat_active ? MIDI_MAX : 0);
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safe_midi_write(midi,
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state_config.select_frag_codes.values[context->selected],
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beat_active ? MIDI_MAX : 0);
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last_active = beat_active;
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}
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change = tempo_progress(context->tempo, 4.0) < 0.25;
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if (change && !last_change && context->demo) {
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state_randomize(context, state_config);
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}
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last_change = change;
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}
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log_info("(state) background writing stopped by main thread (pid: %d)", pid);
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return false;
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}
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void state_load(SharedContext *context, StateConfig state_config,
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char *state_file) {
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ConfigFile saved_state;
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char key[100];
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unsigned int i;
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saved_state = config_file_read(state_file, false);
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tempo_set(&context->tempo,
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config_file_get_int(saved_state, "tempo", context->tempo.tempo));
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context->page = config_file_get_int(saved_state, "page", 0);
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context->selected = config_file_get_int(saved_state, "selected", 0);
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for (i = 0; i < context->state.length; i++) {
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sprintf(key, "seed_%d", i);
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context->seeds[i] =
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config_file_get_int(saved_state, key, context->seeds[i]);
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sprintf(key, "state_%d", i);
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context->state.values[i] = config_file_get_int(saved_state, key, 0);
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}
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for (i = 0; i < state_config.midi_active_counts.length; i++) {
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sprintf(key, "active_%d", i);
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context->active[i] = config_file_get_int(saved_state, key, 0);
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}
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for (i = 0; i < state_config.midi_codes.length; i++) {
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sprintf(key, "value_%d_x", i);
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context->values[i][0] =
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(float)config_file_get_int(saved_state, key, 0) / MIDI_MAX;
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sprintf(key, "value_%d_y", i);
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context->values[i][1] =
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(float)config_file_get_int(saved_state, key, 0) / MIDI_MAX;
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sprintf(key, "value_%d_z", i);
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context->values[i][2] =
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(float)config_file_get_int(saved_state, key, 0) / MIDI_MAX;
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}
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config_file_free(saved_state);
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}
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void state_init(SharedContext *context, StateConfig state_config, bool demo,
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unsigned int base_tempo, char *state_file, bool load_state) {
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unsigned int i;
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context->tempo = tempo_init();
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tempo_set(&context->tempo, base_tempo);
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context->demo = demo;
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context->state.length = state_config.select_frag_codes.length;
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memset(context->state.values, 0, sizeof(context->state.values));
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if (demo) {
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state_randomize(context, state_config);
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}
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memset(context->active, 0, sizeof(context->active));
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memset(context->values, 0, sizeof(context->values));
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context->page = 0;
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context->selected = 0;
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memset(context->seeds, 0, sizeof(context->seeds));
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for (i = 0; i < context->state.length; i++) {
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context->seeds[i] = rand_uint(1000);
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}
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if (load_state) {
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state_load(context, state_config, state_file);
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}
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}
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void state_randomize(SharedContext *context, StateConfig state_config) {
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unsigned int i;
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for (i = 0; i < context->state.length; i++) {
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context->state.values[i] = rand_uint(state_config.state_max);
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}
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}
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void state_save(SharedContext *context, StateConfig state_config,
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char *state_file) {
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ConstStringArray lines;
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unsigned int i;
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log_info("Saving state to '%s'...", state_file);
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lines.length = 0;
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sprintf(lines.values[lines.length++], "tempo=%d",
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(unsigned int)context->tempo.tempo);
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sprintf(lines.values[lines.length++], "page=%d", context->page);
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sprintf(lines.values[lines.length++], "selected=%d", context->selected);
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for (i = 0; i < context->state.length; i++) {
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sprintf(lines.values[lines.length++], "seed_%d=%d", i, context->seeds[i]);
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sprintf(lines.values[lines.length++], "state_%d=%d", i,
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context->state.values[i]);
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}
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for (i = 0; i < state_config.midi_active_counts.length; i++) {
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sprintf(lines.values[lines.length++], "active_%d=%d", i,
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context->active[i]);
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}
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for (i = 0; i < state_config.midi_codes.length; i++) {
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sprintf(lines.values[lines.length++], "value_%d_x=%d", i,
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(unsigned int)(context->values[i][0] * MIDI_MAX));
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sprintf(lines.values[lines.length++], "value_%d_y=%d", i,
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(unsigned int)(context->values[i][1] * MIDI_MAX));
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sprintf(lines.values[lines.length++], "value_%d_z=%d", i,
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(unsigned int)(context->values[i][2] * MIDI_MAX));
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}
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file_write(state_file, lines);
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}
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