-#ifndef _CMD_UTILS_H
-#define _CMD_UTILS_H
+/*
+ * Various utilities for command line tools
+ * copyright (c) 2003 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef FFMPEG_CMDUTILS_H
+#define FFMPEG_CMDUTILS_H
+
+#include <inttypes.h>
+#include "libavcodec/avcodec.h"
+#include "libavformat/avformat.h"
+#include "libswscale/swscale.h"
+
+/**
+ * program name, defined by the program for show_version().
+ */
+extern const char program_name[];
+
+/**
+ * program birth year, defined by the program for show_banner()
+ */
+extern const int program_birth_year;
+
+extern const int this_year;
+
+extern const char **opt_names;
+extern AVCodecContext *avcodec_opts[CODEC_TYPE_NB];
+extern AVFormatContext *avformat_opts;
+extern struct SwsContext *sws_opts;
+
+/**
+ * Fallback for options that are not explicitly handled, these will be
+ * parsed through AVOptions.
+ */
+int opt_default(const char *opt, const char *arg);
+
+/**
+ * Parses a string and returns its corresponding value as a double.
+ * Exits from the application if the string cannot be correctly
+ * parsed or the corresponding value is invalid.
+ *
+ * @param context the context of the value to be set (e.g. the
+ * corresponding commandline option name)
+ * @param numstr the string to be parsed
+ * @param type the type (OPT_INT64 or OPT_FLOAT) as which the
+ * string should be parsed
+ * @param min the minimum valid accepted value
+ * @param max the maximum valid accepted value
+ */
+double parse_number_or_die(const char *context, const char *numstr, int type, double min, double max);
+
+/**
+ * Parses a string specifying a time and returns its corresponding
+ * value as a number of microseconds. Exits from the application if
+ * the string cannot be correctly parsed.
+ *
+ * @param context the context of the value to be set (e.g. the
+ * corresponding commandline option name)
+ * @param timestr the string to be parsed
+ * @param is_duration a flag which tells how to interpret \p timestr, if
+ * not zero \p timestr is interpreted as a duration, otherwise as a
+ * date
+ *
+ * @see parse_date()
+ */
+int64_t parse_time_or_die(const char *context, const char *timestr, int is_duration);
typedef struct {
const char *name;
#define OPT_GRAB 0x0040
#define OPT_INT 0x0080
#define OPT_FLOAT 0x0100
- union {
- void (*func_arg)(const char *);
+#define OPT_SUBTITLE 0x0200
+#define OPT_FUNC2 0x0400
+#define OPT_INT64 0x0800
+#define OPT_EXIT 0x1000
+ union {
+ void (*func_arg)(const char *); //FIXME passing error code as int return would be nicer then exit() in the func
int *int_arg;
char **str_arg;
float *float_arg;
+ int (*func2_arg)(const char *, const char *);
+ int64_t *int64_arg;
} u;
const char *help;
const char *argname;
} OptionDef;
void show_help_options(const OptionDef *options, const char *msg, int mask, int value);
-void parse_options(int argc, char **argv, const OptionDef *options);
-void parse_arg_file(const char *filename);
+
+/**
+ * Parses the command line arguments.
+ * @param options Array with the definitions required to interpret every
+ * option of the form: -<option_name> [<argument>]
+ * @param parse_arg_function Name of the function called to process every
+ * argument without a leading option name flag. NULL if such arguments do
+ * not have to be processed.
+ */
+void parse_options(int argc, char **argv, const OptionDef *options,
+ void (* parse_arg_function)(const char*));
+
+void set_context_opts(void *ctx, void *opts_ctx, int flags);
+
void print_error(const char *filename, int err);
-#endif /* _CMD_UTILS_H */
+/**
+ * Prints the program banner to stderr. The banner contents depend on the
+ * current version of the repository and of the libav* libraries used by
+ * the program.
+ */
+void show_banner(void);
+
+/**
+ * Prints the version of the program to stdout. The version message
+ * depends on the current versions of the repository and of the libav*
+ * libraries.
+ */
+void show_version(void);
+
+/**
+ * Prints the license of the program to stdout. The license depends on
+ * the license of the libraries compiled into the program.
+ */
+void show_license(void);
+
+/**
+ * Prints a listing containing all the formats supported by the
+ * program.
+ */
+void show_formats(void);
+
+/**
+ * Returns a positive value if reads from standard input a line
+ * starting with [yY], otherwise returns 0.
+ */
+int read_yesno(void);
+
+#endif /* FFMPEG_CMDUTILS_H */
projects / frescor / ffmpeg.git / blobdiff