Mercurial > repos > blastem
view config.c @ 1356:4d16c09210fd
Fix resampling code to deal with case in which output frequency is greater than the input frequency. Probably could stand to be improved, but at least it doesn't cause the emulator to deadlock
author | Michael Pavone <pavone@retrodev.com> |
---|---|
date | Thu, 11 May 2017 07:51:28 -0700 |
parents | 4490c9c12272 |
children | 369da70ee2c2 |
line wrap: on
line source
/* Copyright 2013 Michael Pavone This file is part of BlastEm. BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. */ #include "tern.h" #include "util.h" #include <stdio.h> #include <stdlib.h> #include <string.h> #ifdef __MINGW64_VERSION_MAJOR #define MINGW_W64_VERSION (__MINGW64_VERSION_MAJOR * 1000 + __MINGW64_VERSION_MINOR) #else #define MINGW_W64_VERSION 0 #endif #if defined(_WIN32) && (MINGW_W64_VERSION < 3003) char * strtok_r(char * input, char * sep, char ** state) { if (input) { *state = input; } char * ret = *state; while (**state && **state != *sep) { ++*state; } if (**state) { **state = 0; ++*state; return ret; } return NULL; } #endif tern_node * parse_config_int(char **state, int started, int *line) { char *config_data, *curline; tern_node * head = NULL; config_data = started ? NULL : *state; while ((curline = strtok_r(config_data, "\n", state))) { config_data = NULL; curline = strip_ws(curline); int len = strlen(curline); if (!len) { *line = *line + 1; continue; } if (curline[0] == '#') { *line = *line + 1; continue; } if (curline[0] == '}') { if (started) { return head; } fatal_error("unexpected } on line %d\n", *line); } char * end = curline + len - 1; if (*end == '{') { *end = 0; curline = strip_ws(curline); *line = *line + 1; head = tern_insert_node(head, curline, parse_config_int(state, 1, line)); } else { char * val = strip_ws(split_keyval(curline)); char * key = curline; if (*val) { head = tern_insert_ptr(head, key, strdup(val)); } else { fprintf(stderr, "Key %s is missing a value on line %d\n", key, *line); } *line = *line + 1; } } return head; } tern_node *parse_config(char * config_data) { int line = 1; return parse_config_int(&config_data, 0, &line); } tern_node *parse_config_file(char *config_path) { tern_node * ret = NULL; FILE * config_file = fopen(config_path, "rb"); if (!config_file) { goto open_fail; } long config_size = file_size(config_file); if (!config_size) { goto config_empty; } char * config_data = malloc(config_size+1); if (fread(config_data, 1, config_size, config_file) != config_size) { goto config_read_fail; } config_data[config_size] = '\0'; ret = parse_config(config_data); config_read_fail: free(config_data); config_empty: fclose(config_file); open_fail: return ret; } tern_node *parse_bundled_config(char *config_name) { uint32_t confsize; char *confdata = read_bundled_file(config_name, &confsize); tern_node *ret = NULL; if (confdata) { confdata[confsize] = 0; ret = parse_config(confdata); free(confdata); } return ret; } tern_node *load_config() { char const *confdir = get_config_dir(); char *confpath = NULL; tern_node *ret; if (confdir) { confpath = alloc_concat(confdir, "/blastem.cfg"); ret = parse_config_file(confpath); if (ret) { free(confpath); return ret; } } ret = parse_bundled_config("default.cfg"); if (ret) { free(confpath); return ret; } if (confpath) { fatal_error("Failed to find a config file at %s or in the blastem executable directory\n", confpath); } else { fatal_error("Failed to find a config file in the BlastEm executable directory and the config directory path could not be determined\n"); } //this will never get reached, but the compiler doesn't know that. Let's make it happy return NULL; }