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fix: use pointer to dispatcher state in process callback for real-time access

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Co-authored-by: aider (deepseek/deepseek-coder) <aider@aider.chat>
This commit is contained in:
Loic Coenen
2026-05-04 22:25:33 +00:00
parent 4eed81ae06
commit d4ba1589ff
4 changed files with 18 additions and 5 deletions
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12
engine.c
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@@ -28,9 +28,8 @@ static int process_callback(jack_nframes_t nframes, void *arg) {
jack_midi_clear_buffer(midi_out_buf);
// Get state snapshot for reads
AppState state;
dispatcher_get_state(&state);
// Get pointer to dispatcher's state for real-time access
AppState *state = engine->state;
// Process MIDI input
int event_index;
@@ -100,7 +99,7 @@ static int process_callback(jack_nframes_t nframes, void *arg) {
for (int s = 0; s < MAX_SCENES; s++) {
for (int g = 0; g < 8; g++) {
int clip_idx = g * GRID_ROWS * GRID_COLS + s * GRID_COLS + ch;
MidiClip *mclip = &state.midi_clips[clip_idx];
MidiClip *mclip = &state->midi_clips[clip_idx];
if (mclip->state == CLIP_LOOPING && mclip->event_count > 0 && mclip->events != NULL) {
if (mclip->read_index < mclip->event_count) {
@@ -142,7 +141,7 @@ static int process_callback(jack_nframes_t nframes, void *arg) {
// Iterate over all grids for this scene and channel
for (int g = 0; g < 8; g++) {
int clip_idx = g * GRID_ROWS * GRID_COLS + s * GRID_COLS + ch;
Clip *clip = &state.clips[clip_idx];
Clip *clip = &state->clips[clip_idx];
if (clip->state == CLIP_RECORDING) {
if (clip->write_position < MAX_BUFFER_SIZE && clip->buffer != NULL) {
@@ -237,6 +236,9 @@ int engine_init(Engine *engine, const char *client_name, DispatchFn dispatch) {
carla_init(&engine->carla_host, engine->client);
carla_scan_plugins(&engine->carla_host);
// Get pointer to dispatcher's state for real-time access
engine->state = dispatcher_get_state_ptr();
return 0;
}