- #include "IZ_midi.h"
-
- static INI_ConfigItem midi_input_config_items[(IZ_PLAYERS * (IZ_CONTROLS + 2)) + 1];
-
- bool IZ_MIDIInputIsValidChannel(u8 value) {
- return (0 <= value && value <= 15);
- }
-
- void IZ_MIDIInputSerializeControl(i32 value, char* control[128]) {
- const char* serialized = MIDI_GetNoteName(value);
- IZ_memcpy(control, 128, serialized, 128);
- }
-
- i32 IZ_MIDIInputDeserializeControl(const char* control) {
- return MIDI_GetNoteFromName(control);
- }
-
- void IZ_MIDIInputHandleNoteOnOffEvents(IZ_MIDIInputState* state, IZ_Action* action, PmEvent e) {
- u32 message = e.message;
- u8 status = message & 0xF0u;
- u8 channel = message & 0x0Fu;
- u8 data1 = (message >> 8) & 0xFFu;
- // u8 data2 = (message >> 16) & 0xFFu;
-
- u8 control_index;
- for (control_index = 0; control_index < IZ_CONTROLS; control_index += 1) {
- if (
- data1 == state->config.control_mapping[control_index]
- && (
- (state->config.channel < 16 && channel == state->config.channel)
- || state->config.channel >= 16
- )
- ) {
- const u16 bitflag = (0x1 << control_index);
- if (status == MIDI_MESSAGE_NOTEON) {
- *action |= bitflag;
- return;
- }
- if (status == MIDI_MESSAGE_NOTEOFF) {
- *action &= ~bitflag;
- return;
- }
- }
- }
- }
-
- void IZ_MIDIInputHandleEvents(IZ_MIDIInputState(* state)[IZ_PLAYERS], IZ_Action(* action)[IZ_PLAYERS], PmEvent e) {
- u8 player_index;
- for (player_index = 0; player_index < IZ_PLAYERS; player_index += 1) {
- IZ_MIDIInputHandleNoteOnOffEvents(&(*state)[player_index], &(*action)[player_index], e);
- }
- }
-
- void IZ_MIDIInputBindStateToConfig(IZ_MIDIInputState(* state)[IZ_PLAYERS], INI_ConfigItem config_items[]) {
- u8 player_index;
- u8 control_index;
- for (player_index = 0; player_index < IZ_PLAYERS; player_index += 1) {
- u8 base_index = (player_index * (IZ_CONTROLS + 2));
- config_items[base_index].dest = &((*state)[player_index].config.device_id);
- config_items[base_index + 1].dest = &((*state)[player_index].config.channel);
- for (control_index = 0; control_index < IZ_CONTROLS; control_index += 1) {
- config_items[base_index + 2 + control_index].dest = &((*state)[player_index].config.control_mapping[control_index]);
- }
- }
- }
-
- IZ_ProcedureResult IZ_MIDIInputSaveConfig(IZ_MIDIInputState(* state)[IZ_PLAYERS], const char* config_path) {
- IZ_MIDIInputBindStateToConfig(state, midi_input_config_items);
- return INI_ConfigSave(midi_input_config_items, config_path);
- }
-
- void IZ_MIDIInputInitializeConfigItems(INI_ConfigItem config_items[]) {
- u8 player_index;
- u8 control_index;
-
- char* main_section_name;
- char* control_mapping_section_name;
- for (player_index = 0; player_index < IZ_PLAYERS; player_index += 1) {
- main_section_name = IZ_calloc(64, sizeof(char));
- sprintf(main_section_name, "MIDIInput.%d", player_index);
-
- u16 base_index = (player_index * (IZ_CONTROLS + 2));
- config_items[base_index] = (INI_ConfigItem) {
- INI_CONFIG_TYPE_I32,
- main_section_name,
- "DeviceID",
- NULL,
- &IZ_MIDI_INPUT_DEFAULT_STATE[player_index].config.device_id,
- NULL,
- INI_CONFIG_TRANSFORMER_NONE,
- NULL,
- };
-
- config_items[base_index + 1] = (INI_ConfigItem) {
- INI_CONFIG_TYPE_U8,
- main_section_name,
- "Channel",
- NULL,
- &IZ_MIDI_INPUT_DEFAULT_STATE[player_index].config.channel,
- IZ_MIDIInputIsValidChannel,
- INI_CONFIG_TRANSFORMER_NONE,
- NULL,
- };
-
- control_mapping_section_name = IZ_calloc(64, sizeof(char));
- sprintf(control_mapping_section_name, "MIDIInput.%d.ControlMapping", player_index);
- for (control_index = 0; control_index < IZ_CONTROLS; control_index += 1) {
- config_items[base_index + 2 + control_index] = (INI_ConfigItem) {
- INI_CONFIG_TYPE_U8,
- control_mapping_section_name,
- IZ_ACTION_NAMES[control_index],
- NULL,
- &IZ_MIDI_INPUT_DEFAULT_STATE[player_index].config.control_mapping[control_index],
- NULL,
- {
- .serialize = IZ_MIDIInputSerializeControl,
- .deserialize = IZ_MIDIInputDeserializeControl,
- },
- NULL,
- };
- }
- }
-
- config_items[IZ_PLAYERS * (IZ_CONTROLS + 2)] = INI_CONFIG_ITEM_NULL;
- }
-
- IZ_ProcedureResult IZ_MIDIInputInitializeConfig(IZ_MIDIInputState(* state)[IZ_PLAYERS], const char* config_path, u8 argc, const char* argv[]) {
- IZ_MIDIInputInitializeConfigItems(midi_input_config_items);
- IZ_MIDIInputBindStateToConfig(state, midi_input_config_items);
- if (INI_ConfigInitialize(midi_input_config_items, config_path, argc, argv) < 0) {
- return -1;
- }
- return 0;
- }
-
- IZ_ProcedureResult IZ_MIDIInputInitialize(IZ_MIDIInputState(* state)[IZ_PLAYERS], const char* config_path, u8 argc, const char* argv[]) {
- if (Pm_Initialize()) {
- return -1;
- }
-
- IZ_memcpy(state, sizeof(IZ_MIDIInputState) * IZ_PLAYERS, &IZ_MIDI_INPUT_DEFAULT_STATE, sizeof(IZ_MIDIInputState) * IZ_PLAYERS);
- if (IZ_MIDIInputInitializeConfig(state, config_path, argc, argv) < 0) {
- return -2;
- }
-
- u8 player_index;
- u8 midi_devices_count = Pm_CountDevices();
- u8 input_midi_devices_count = 0;
- u8 device_index;
- for (device_index = 0; device_index < midi_devices_count; device_index += 1) {
- if (!Pm_GetDeviceInfo(device_index)->input) {
- continue;
- }
-
- // midi device can output messages for the app to receive
- input_midi_devices_count += 1;
- }
-
- for (player_index = 0; player_index < input_midi_devices_count; player_index += 1) {
- if (player_index >= IZ_PLAYERS) {
- break;
- }
- (*state)[player_index].device_info = Pm_GetDeviceInfo((*state)[player_index].config.device_id);
- (*state)[player_index].stream = NULL;
- Pm_OpenInput(
- &(*state)[player_index].stream,
- (*state)[player_index].config.device_id,
- NULL,
- MIDI_EVENT_BUFFER_SIZE,
- NULL,
- NULL
- );
- }
-
- INI_ConfigSaveResult post_config_save_result = IZ_MIDIInputSaveConfig(state, config_path);
- if (post_config_save_result < 0) {
- return -3;
- }
-
- return 0;
- }
-
- void IZ_MIDIInputTeardown(IZ_MIDIInputState(* state)[IZ_PLAYERS]) {
- u8 player_index;
- for (player_index = 0; player_index < IZ_PLAYERS; player_index += 1) {
- if (!(*state)[player_index].stream) {
- continue;
- }
- Pm_Close((*state)[player_index].stream);
- }
- }
|