/* Destroy the builtin parameter database.
Generally, do this on projectm exit */
int destroy_builtin_param_db() {
splay_traverse(free_param, builtin_param_tree);
destroy_splaytree(builtin_param_tree);
builtin_param_tree = NULL;
return SUCCESS;
}
/* Private function to close a preset file */
int close_preset(preset_t * preset) {
if (preset == NULL)
return FAILURE;
splay_traverse(free_init_cond, preset->init_cond_tree);
destroy_splaytree(preset->init_cond_tree);
splay_traverse(free_init_cond, preset->per_frame_init_eqn_tree);
destroy_splaytree(preset->per_frame_init_eqn_tree);
splay_traverse(free_per_pixel_eqn, preset->per_pixel_eqn_tree);
destroy_splaytree(preset->per_pixel_eqn_tree);
splay_traverse(free_per_frame_eqn, preset->per_frame_eqn_tree);
destroy_splaytree(preset->per_frame_eqn_tree);
splay_traverse(free_param, preset->user_param_tree);
destroy_splaytree(preset->user_param_tree);
splay_traverse(free_custom_wave, preset->custom_wave_tree);
destroy_splaytree(preset->custom_wave_tree);
splay_traverse(free_custom_shape, preset->custom_shape_tree);
destroy_splaytree(preset->custom_shape_tree);
free(preset);
return SUCCESS;
}
void destroy_param_db_tree(splaytree_t * tree) {
if (!tree)
return;
splay_traverse(free_param, tree);
destroy_splaytree(tree);
}
void destroy_init_cond_tree(splaytree_t * tree) {
if (!tree)
return;
splay_traverse(free_init_cond, tree);
destroy_splaytree(tree);
}
void destroy_per_point_eqn_tree(splaytree_t * tree) {
if (!tree)
return;
splay_traverse(free_per_point_eqn, tree);
destroy_splaytree(tree);
}
void reloadPerFrame(char * s, preset_t * preset) {
FILE * fs;
int slen;
char c;
int eqn_count = 1;
per_frame_eqn_t * per_frame;
if (s == NULL)
return;
if (preset == NULL)
return;
/* Clear previous per frame equations */
splay_traverse(free_per_frame_eqn, preset->per_frame_eqn_tree);
destroy_splaytree(preset->per_frame_eqn_tree);
preset->per_frame_eqn_tree = create_splaytree(compare_int, copy_int, free_int);
/* Convert string to a stream */
fs = fmemopen (s, strlen(s), "r");
while ((c = fgetc(fs)) != EOF) {
ungetc(c, fs);
if ((per_frame = parse_per_frame_eqn(fs, eqn_count, preset)) != NULL) {
splay_insert(per_frame, &eqn_count, preset->per_frame_eqn_tree);
eqn_count++;
}
}
fclose(fs);
/* Clear string space */
memset(preset->per_frame_eqn_string_buffer, 0, STRING_BUFFER_SIZE);
/* Compute length of string */
slen = strlen(s);
/* Copy new string into buffer */
strncpy(preset->per_frame_eqn_string_buffer, s, slen);
/* Yet again no bounds checking */
preset->per_frame_eqn_string_index = slen;
/* Finished */
printf("reloadPerFrame: %d eqns parsed succesfully\n", eqn_count-1);
return;
}
void reloadPerPixel(char *s, preset_t * preset) {
FILE * fs;
int slen;
char c;
int i;
if (s == NULL)
return;
if (preset == NULL)
return;
/* Clear previous per pixel equations */
splay_traverse(free_per_pixel_eqn, preset->per_pixel_eqn_tree);
destroy_splaytree(preset->per_pixel_eqn_tree);
preset->per_pixel_eqn_tree = create_splaytree(compare_int, copy_int, free_int);
/* Convert string to a stream */
fs = fmemopen (s, strlen(s), "r");
while ((c = fgetc(fs)) != EOF) {
ungetc(c, fs);
parse_per_pixel_eqn(fs, preset);
}
fclose(fs);
/* Clear string space */
memset(preset->per_pixel_eqn_string_buffer, 0, STRING_BUFFER_SIZE);
/* Compute length of string */
slen = strlen(s);
/* Copy new string into buffer */
strncpy(preset->per_pixel_eqn_string_buffer, s, slen);
/* Yet again no bounds checking */
preset->per_pixel_eqn_string_index = slen;
/* Finished */
return;
}
int closePresetDir() {
/* No preset director appears to be loaded */
if (chrono_order_preset_name_tree == NULL)
return SUCCESS;
if (PRESET_DEBUG) {
printf("closePresetDir: freeing directory buffer...");
fflush(stdout);
}
/* Free each entry in the directory preset name tree */
splay_traverse(free_int, chrono_order_preset_name_tree);
/* Destroy the chronological order splay tree */
destroy_splaytree(chrono_order_preset_name_tree);
chrono_order_preset_name_tree = NULL;
preset_name_buffer_size = 0;
if (PRESET_DEBUG) printf("finished\n");
return SUCCESS;
}
int loadPresetDir(char * dir) {
struct dirent ** name_list;
char * preset_name;
int i, j, dir_size;
if (dir == NULL)
return ERROR;
if (chrono_order_preset_name_tree != NULL) {
if (PRESET_DEBUG) printf("loadPresetDir: previous directory doesn't appear to be closed!\n");
/* Let this slide for now */
}
/* Scan the entire directory, storing each entry in a dirent struct array that needs
to be freed later. For more information, consult scandir(3) in the man pages */
if ((dir_size = scandir(dir, &name_list, 0, alphasort)) < 0) {
if (PRESET_DEBUG) printf("loadPresetDir: failed to open directory \"%s\"\n", dir);
return ERROR;
}
chrono_order_preset_name_tree = create_splaytree(compare_int, copy_int, free_int);
/* Iterate through entire dirent name list, adding to the preset name list if it
is valid */
for (i = 0; ((i < dir_size) && (i < MAX_PRESETS_IN_DIR));i++) {
/* Only perform the next set of operations if the preset name
contains a valid extension */
if (is_valid_extension(name_list[i]->d_name)) {
/* Handle the out of memory case. My guess is xmms would
crash before this program would, but whatever...*/
if ((preset_name = (char*)malloc(MAX_PATH_SIZE)) == NULL) {
if (PRESET_DEBUG) printf("loadPresetDir: out of memory! \n");
/* Free the rest of the dirent name list */
for (j = i; j < dir_size; j++)
free(name_list[j]);
destroy_splaytree(chrono_order_preset_name_tree);
return OUTOFMEM_ERROR;
}
/* Now create the full path */
if (get_preset_path(&preset_name, dir, name_list[i]->d_name) < 0) {
if (PRESET_DEBUG) printf("loadPresetDir: failed to generate full preset path name!\n");
/* Free the rest of the dirent name list */
for (j = i; j < dir_size; j++)
free(name_list[j]);
destroy_splaytree(chrono_order_preset_name_tree);
return OUTOFMEM_ERROR;
}
/* Insert the character string into the splay tree, with the key being its sequence number */
splay_insert(preset_name, &preset_name_buffer_size, chrono_order_preset_name_tree);
preset_name_buffer_size++;
}
/* Free the dirent struct */
free(name_list[i]);
}
free(name_list);
/* No valid files in directory! */
if (chrono_order_preset_name_tree->root == NULL) {
if (PRESET_DEBUG) printf("loadPresetDir: no valid files in directory \"%s\"\n", dir);
destroy_splaytree(chrono_order_preset_name_tree);
chrono_order_preset_name_tree = NULL;
return FAILURE;
}
/* Start the prefix index right before the first entry, so next preset
starts at the top of the list */
preset_index = -1;
/* Start the first preset */
switchPreset(ALPHA_NEXT, HARD_CUT);
return SUCCESS;
}