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/* mode.h - mode module definitions
* Copyright (C) 2000-2008 Jason Jordan <shnutils@freeshell.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/*
* $Id: mode.h,v 1.32 2008/02/18 23:25:13 jason Exp $
*/
#ifndef __MODE_H__
#define __MODE_H__
#include <stdlib.h>
#include <unistd.h>
#include "format-types.h"
#include "mode-types.h"
#include "module.h"
/* default output directories */
#define CURRENT_DIR "."
#define INPUT_FILE_DIR ""
/* various buffer sizes */
#define BUF_SIZE 2048
#define XFER_SIZE 262144
/* error codes */
#define ST_EXIT_SUCCESS 0
#define ST_EXIT_ERROR 1
#define ST_EXIT_QUIT 255
/* global mode-accessible options */
extern global_opts st_ops;
/* function to open an input stream and skip past the ID3v2 tag, if one exists */
bool open_input_stream(wave_info *);
/* function to handle command-line option parsing with global (i.e. non-mode-specific) options */
int st_getopt(int,char **,char *);
/* global usage screen */
void st_global_usage();
/* returns program name ("prog mode" or "alias") */
char *st_progname(void);
/* function to convert a file's length to m:ss or m:ss.ff format */
void length_to_str(wave_info *);
/* close a file descriptor, and wait for a child process if necessary */
int close_and_wait(FILE *,proc_info *,int,format_module *);
#define close_input(a,b) close_and_wait(a,&b,CHILD_INPUT,NULL)
#define close_output(a,b) close_and_wait(a,&b,CHILD_OUTPUT,NULL)
#define close_input_stream(a) close_and_wait(a->input,&a->input_proc,CHILD_INPUT,a->input_format)
#define close_output_stream(a) close_and_wait(a->output,&a->output_proc,CHILD_OUTPUT,NULL)
/* function to discard the WAVE header, leaving the file pointer at the beginning of the audio data */
void discard_header(wave_info *);
/* wrapper function to name output filename based on input filename and extension */
void create_output_filename(char *,char *,char *);
/* wrapper function to open an output stream */
FILE *open_output_stream(char *,proc_info *);
/* function to determine if two filenames point to the same file */
int files_are_identical(char *,char *);
/* function to remove a file if it exists */
void remove_file(char *);
/* a simple menu system to alter the order in which given input files will be processed */
void alter_file_order(wave_info **,int);
/* function to reorder files based on user preference */
void reorder_files(wave_info **,int);
/* functions to aid in parsing input length formats */
wlong smrt_parse(unsigned char *,wave_info *);
/* function to determine whether odd-sized data chunks are NULL-padded to an even length */
bool odd_sized_data_chunk_is_null_padded(wave_info *);
/* functions for building argument lists in format modules */
void arg_reset(child_args *);
void arg_add(child_args *,char *);
void arg_replace(child_args *,int,char *);
/* functions for progress output */
void prog_update(progress_info *);
void prog_success(progress_info *);
void prog_error(progress_info *);
#endif
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