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#include "midi_loader.h"
#define DEBUG 0
//static int event_count = 0;
size_t last_msec = 0;
size_t nmsecs_since_last = 0;
void print_event(fluid_midi_event_t *event, size_t current_msec){
// {{{ DESCRIPTION
// fluid_midi_event_t* next; /* Link to next event */
// void *paramptr; /* Pointer parameter (for SYSEX data), size is stored to param1, param2 indicates if pointer should be freed (dynamic if TRUE) */
// unsigned int dtime; /* Delay (ticks) between this and previous event. midi tracks. */
// unsigned int param1; /* First parameter */
// unsigned int param2; /* Second parameter */
// unsigned char type; /* MIDI event type */
// unsigned char channel; /* MIDI channel */
//}}}
if(DEBUG){
printf("dtime:%u ", event->dtime);
printf("param1:%u ", event->param1);
printf("param2: %u ", event->param2);
printf("type: %x ", event->type);
printf("channel: %u ", event->channel);
printf("nframe: %u ", current_msec);
puts("\n");
}
}
int get_events(void *data, fluid_midi_event_t *event){
//this function is called every time a new event comes in
read_midi_ctx_t *ctx = (read_midi_ctx_t *)data;
fluid_player_t *player = ctx->player;
fluid_track_t *track = ctx->track;
read_midi_callback cb = ctx->callback;
size_t current_msec;
current_msec = (player->deltatime * track->ticks);
nmsecs_since_last = current_msec - last_msec;
last_msec = current_msec;
//process_midi_cb execution...
cb(event, nmsecs_since_last, ctx->callback_userdata);
}
void load_midi_file(char *filename, read_midi_callback callback, void *callback_userdata){
fluid_playlist_item playlist_item;
playlist_item.filename = filename;
fluid_player_t *player;
player = (fluid_player_t *)new_fluid_player();
player->playback_callback = &get_events;
read_midi_ctx_t ctx;
ctx.player = player;
ctx.callback = callback;
ctx.callback_userdata = callback_userdata;
player->playback_userdata = (void *)&ctx;
fluid_player_load(player, &playlist_item);
int i;
for(i = 0; i < player->ntracks; i++){
ctx.track = player->track[i];//tracks...when there is more than one song in a file
fluid_track_send_events(player->track[i], player->synth, player, (unsigned int)-1);
}
delete_fluid_player(player);
}
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