Started implementation of "correct" O_DIRECT handling

[frescor/ffmpeg.git] / cmdutils.h

diff --git a/cmdutils.h b/cmdutils.h
index eb94058888ec066ae2025ee7dbebfa9bfb2412b3..e30ea0f9afc13a975eb19bfa9d5973cc09c7d838 100644 (file)
--- a/cmdutils.h
+++ b/cmdutils.h
@@ -19,8 +19,67 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef _CMD_UTILS_H
-#define _CMD_UTILS_H
+#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;
@@ -37,6 +96,7 @@ typedef struct {
 #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;
@@ -62,6 +122,40 @@ void show_help_options(const OptionDef *options, const char *msg, int mask, int
 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 */