2007-02-27 16:05:19 +00:00
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/*
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* Various utilities for command line tools
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* copyright (c) 2003 Fabrice Bellard
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*
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2011-03-18 17:35:10 +00:00
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* This file is part of Libav.
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2007-02-27 16:05:19 +00:00
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*
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2011-03-18 17:35:10 +00:00
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* Libav is free software; you can redistribute it and/or
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2007-02-27 16:05:19 +00:00
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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2011-03-18 17:35:10 +00:00
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* Libav is distributed in the hope that it will be useful,
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2007-02-27 16:05:19 +00:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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2011-03-18 17:35:10 +00:00
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* License along with Libav; if not, write to the Free Software
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2007-02-27 16:05:19 +00:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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2011-05-17 14:58:04 +00:00
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#ifndef LIBAV_CMDUTILS_H
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#define LIBAV_CMDUTILS_H
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2003-06-07 18:34:02 +00:00
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2011-05-15 15:09:25 +00:00
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#include <stdint.h>
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2008-10-04 11:20:02 +00:00
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#include "libavcodec/avcodec.h"
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2011-05-15 15:09:25 +00:00
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#include "libavfilter/avfilter.h"
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2008-10-04 11:20:02 +00:00
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#include "libavformat/avformat.h"
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#include "libswscale/swscale.h"
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2007-11-24 10:08:02 +00:00
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2008-05-21 23:36:32 +00:00
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/**
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* program name, defined by the program for show_version().
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*/
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extern const char program_name[];
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2008-05-29 08:48:51 +00:00
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/**
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* program birth year, defined by the program for show_banner()
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*/
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extern const int program_birth_year;
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2010-03-30 23:30:55 +00:00
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extern AVCodecContext *avcodec_opts[AVMEDIA_TYPE_NB];
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2008-09-28 19:35:22 +00:00
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extern AVFormatContext *avformat_opts;
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extern struct SwsContext *sws_opts;
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2011-07-10 13:46:15 +00:00
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extern AVDictionary *format_opts, *codec_opts;
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2008-09-28 19:35:22 +00:00
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2010-10-02 08:44:33 +00:00
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/**
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* Initialize the cmdutils option system, in particular
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* allocate the *_opts contexts.
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*/
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void init_opts(void);
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/**
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* Uninitialize the cmdutils option system, in particular
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* free the *_opts contexts and their contents.
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*/
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void uninit_opts(void);
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2010-09-20 21:48:03 +00:00
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/**
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* Trivial log callback.
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* Only suitable for show_help and similar since it lacks prefix handling.
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*/
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void log_callback_help(void* ptr, int level, const char* fmt, va_list vl);
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2008-09-28 19:35:22 +00:00
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/**
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2009-02-19 00:14:41 +00:00
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* Fallback for options that are not explicitly handled, these will be
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2008-09-28 19:35:22 +00:00
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* parsed through AVOptions.
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*/
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int opt_default(const char *opt, const char *arg);
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2009-06-16 23:09:03 +00:00
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/**
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2010-06-30 15:38:06 +00:00
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* Set the libav* libraries log level.
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2009-06-16 23:09:03 +00:00
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*/
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int opt_loglevel(const char *opt, const char *arg);
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2010-01-20 06:42:39 +00:00
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/**
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* Limit the execution time.
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*/
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int opt_timelimit(const char *opt, const char *arg);
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2008-02-25 14:05:52 +00:00
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/**
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2010-06-30 15:38:06 +00:00
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* Parse a string and return its corresponding value as a double.
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* Exit from the application if the string cannot be correctly
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2008-02-25 15:36:10 +00:00
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* parsed or the corresponding value is invalid.
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2008-02-25 14:05:52 +00:00
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*
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* @param context the context of the value to be set (e.g. the
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2011-10-05 12:12:42 +00:00
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* corresponding command line option name)
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2008-02-25 14:05:52 +00:00
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* @param numstr the string to be parsed
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* @param type the type (OPT_INT64 or OPT_FLOAT) as which the
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* string should be parsed
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2008-02-25 15:36:10 +00:00
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* @param min the minimum valid accepted value
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* @param max the maximum valid accepted value
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2008-02-25 14:05:52 +00:00
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*/
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2012-01-18 19:54:04 +00:00
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double parse_number_or_die(const char *context, const char *numstr, int type,
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double min, double max);
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2008-02-25 14:05:52 +00:00
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2008-03-31 10:01:06 +00:00
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/**
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2010-06-30 15:38:06 +00:00
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* Parse a string specifying a time and return its corresponding
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* value as a number of microseconds. Exit from the application if
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2008-03-31 10:01:06 +00:00
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* the string cannot be correctly parsed.
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*
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* @param context the context of the value to be set (e.g. the
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2011-10-05 12:12:42 +00:00
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* corresponding command line option name)
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2008-03-31 10:01:06 +00:00
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* @param timestr the string to be parsed
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2009-06-06 09:35:15 +00:00
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* @param is_duration a flag which tells how to interpret timestr, if
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* not zero timestr is interpreted as a duration, otherwise as a
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2008-03-31 10:01:06 +00:00
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* date
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*
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2008-04-17 07:32:38 +00:00
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* @see parse_date()
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2008-03-31 10:01:06 +00:00
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*/
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2012-01-18 19:54:04 +00:00
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int64_t parse_time_or_die(const char *context, const char *timestr,
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int is_duration);
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2008-03-31 10:01:06 +00:00
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2011-08-29 05:54:56 +00:00
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typedef struct SpecifierOpt {
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char *specifier; /**< stream/chapter/program/... specifier */
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union {
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uint8_t *str;
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int i;
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int64_t i64;
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float f;
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2011-08-29 07:16:42 +00:00
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double dbl;
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2011-08-29 05:54:56 +00:00
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} u;
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} SpecifierOpt;
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2003-06-07 18:34:02 +00:00
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typedef struct {
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const char *name;
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int flags;
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#define HAS_ARG 0x0001
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#define OPT_BOOL 0x0002
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#define OPT_EXPERT 0x0004
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#define OPT_STRING 0x0008
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2003-08-24 15:29:48 +00:00
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#define OPT_VIDEO 0x0010
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#define OPT_AUDIO 0x0020
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#define OPT_GRAB 0x0040
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2004-04-30 13:41:48 +00:00
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#define OPT_INT 0x0080
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2004-10-16 23:44:16 +00:00
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#define OPT_FLOAT 0x0100
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2005-06-03 14:07:47 +00:00
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#define OPT_SUBTITLE 0x0200
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2011-05-27 23:53:00 +00:00
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#define OPT_INT64 0x0400
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#define OPT_EXIT 0x0800
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#define OPT_DATA 0x1000
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2011-08-28 12:43:54 +00:00
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#define OPT_FUNC2 0x2000
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#define OPT_OFFSET 0x4000 /* option is specified as an offset in a passed optctx */
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2011-08-29 05:54:56 +00:00
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#define OPT_SPEC 0x8000 /* option is to be stored in an array of SpecifierOpt.
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Implies OPT_OFFSET. Next element after the offset is
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an int containing element count in the array. */
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2011-08-28 16:20:17 +00:00
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#define OPT_TIME 0x10000
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2011-08-29 07:16:42 +00:00
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#define OPT_DOUBLE 0x20000
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2005-06-03 14:07:47 +00:00
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union {
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2011-08-28 12:27:27 +00:00
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void *dst_ptr;
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2011-05-27 23:53:00 +00:00
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int (*func_arg)(const char *, const char *);
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2011-08-28 12:43:54 +00:00
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int (*func2_arg)(void *, const char *, const char *);
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size_t off;
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2003-06-07 18:34:02 +00:00
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} u;
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const char *help;
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const char *argname;
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} OptionDef;
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2012-01-18 19:54:04 +00:00
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void show_help_options(const OptionDef *options, const char *msg, int mask,
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int value);
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2007-08-13 23:03:36 +00:00
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2011-10-04 12:50:00 +00:00
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/**
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* Show help for all options with given flags in class and all its
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* children.
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*/
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void show_help_children(const AVClass *class, int flags);
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2007-08-13 23:03:36 +00:00
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/**
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2010-06-30 15:38:06 +00:00
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* Parse the command line arguments.
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2011-08-28 12:43:54 +00:00
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*
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* @param optctx an opaque options context
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2007-08-13 23:03:36 +00:00
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* @param options Array with the definitions required to interpret every
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2010-07-02 12:48:32 +00:00
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* option of the form: -option_name [argument]
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2007-08-13 23:03:36 +00:00
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* @param parse_arg_function Name of the function called to process every
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* argument without a leading option name flag. NULL if such arguments do
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* not have to be processed.
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*/
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2011-08-28 12:43:54 +00:00
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void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
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void (* parse_arg_function)(void *optctx, const char*));
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2007-08-13 23:03:36 +00:00
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2011-08-29 06:11:03 +00:00
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/**
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* Parse one given option.
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*
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* @return on success 1 if arg was consumed, 0 otherwise; negative number on error
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*/
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2012-01-18 19:54:04 +00:00
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int parse_option(void *optctx, const char *opt, const char *arg,
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const OptionDef *options);
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2011-08-29 06:11:03 +00:00
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2011-09-26 06:15:37 +00:00
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/**
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2011-10-05 12:12:42 +00:00
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* Find the '-loglevel' option in the command line args and apply it.
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2011-09-26 06:15:37 +00:00
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*/
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void parse_loglevel(int argc, char **argv, const OptionDef *options);
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2012-03-04 15:46:45 +00:00
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/**
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* Return index of option opt in argv or 0 if not found.
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*/
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int locate_option(int argc, char **argv, const OptionDef *options,
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const char *optname);
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2011-07-28 14:47:38 +00:00
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/**
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* Check if the given stream matches a stream specifier.
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*
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* @param s Corresponding format context.
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* @param st Stream from s to be checked.
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2011-10-30 18:10:50 +00:00
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* @param spec A stream specifier of the [v|a|s|d]:[\<stream index\>] form.
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2011-07-28 14:47:38 +00:00
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*
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* @return 1 if the stream matches, 0 if it doesn't, <0 on error
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*/
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int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec);
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2011-07-10 13:46:15 +00:00
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/**
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* Filter out options for given codec.
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2011-07-16 23:20:50 +00:00
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*
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* Create a new options dictionary containing only the options from
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* opts which apply to the codec with ID codec_id.
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*
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2011-07-28 14:47:38 +00:00
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* @param s Corresponding format context.
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* @param st A stream from s for which the options should be filtered.
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2011-07-16 23:20:50 +00:00
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* @return a pointer to the created dictionary
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2011-07-10 13:46:15 +00:00
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*/
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2012-01-18 19:54:04 +00:00
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AVDictionary *filter_codec_opts(AVDictionary *opts, enum CodecID codec_id,
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AVFormatContext *s, AVStream *st);
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2011-07-10 13:46:15 +00:00
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2011-07-16 23:30:43 +00:00
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/**
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* Setup AVCodecContext options for avformat_find_stream_info().
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*
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* Create an array of dictionaries, one dictionary for each stream
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* contained in s.
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* Each dictionary will contain the options from codec_opts which can
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* be applied to the corresponding stream codec context.
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*
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* @return pointer to the created array of dictionaries, NULL if it
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* cannot be created
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2011-05-25 14:59:51 +00:00
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*/
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2012-01-18 19:54:04 +00:00
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AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
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AVDictionary *codec_opts);
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2011-05-25 14:59:51 +00:00
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2010-05-07 12:42:26 +00:00
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/**
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2010-06-30 15:38:06 +00:00
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* Print an error message to stderr, indicating filename and a human
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2010-05-07 12:42:26 +00:00
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* readable description of the error code err.
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*
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* If strerror_r() is not available the use of this function in a
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* multithreaded application may be unsafe.
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*
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* @see av_strerror()
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*/
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2003-06-07 18:34:02 +00:00
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void print_error(const char *filename, int err);
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2009-12-12 17:45:20 +00:00
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2007-09-27 06:38:40 +00:00
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/**
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2010-06-30 15:38:06 +00:00
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* Print the program banner to stderr. The banner contents depend on the
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2008-02-25 15:36:10 +00:00
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* current version of the repository and of the libav* libraries used by
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* the program.
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2007-09-27 06:38:40 +00:00
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*/
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2008-05-29 08:48:51 +00:00
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void show_banner(void);
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2007-09-27 06:38:40 +00:00
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/**
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2010-06-30 15:38:06 +00:00
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* Print the version of the program to stdout. The version message
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2007-09-27 06:38:40 +00:00
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* depends on the current versions of the repository and of the libav*
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* libraries.
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*/
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2008-05-21 23:36:32 +00:00
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void show_version(void);
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2007-09-27 06:38:40 +00:00
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2007-08-20 08:09:51 +00:00
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/**
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2010-06-30 15:38:06 +00:00
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* Print the license of the program to stdout. The license depends on
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2008-02-25 15:36:10 +00:00
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* the license of the libraries compiled into the program.
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2007-08-20 08:09:51 +00:00
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*/
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void show_license(void);
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2008-05-22 12:55:35 +00:00
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/**
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2010-06-30 15:38:06 +00:00
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* Print a listing containing all the formats supported by the
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2008-05-22 12:55:35 +00:00
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* program.
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*/
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void show_formats(void);
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2009-11-19 16:35:55 +00:00
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/**
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2010-06-30 15:38:06 +00:00
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* Print a listing containing all the codecs supported by the
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2009-11-19 16:35:55 +00:00
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* program.
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*/
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void show_codecs(void);
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2009-12-12 16:18:11 +00:00
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/**
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2010-06-30 15:38:06 +00:00
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* Print a listing containing all the filters supported by the
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2009-12-12 16:18:11 +00:00
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* program.
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*/
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void show_filters(void);
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2009-11-19 16:35:55 +00:00
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/**
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2010-06-30 15:38:06 +00:00
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* Print a listing containing all the bit stream filters supported by the
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2009-11-19 16:35:55 +00:00
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* program.
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*/
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void show_bsfs(void);
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/**
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2010-06-30 15:38:06 +00:00
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* Print a listing containing all the protocols supported by the
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2009-11-19 16:35:55 +00:00
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* program.
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*/
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void show_protocols(void);
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2009-12-21 21:53:03 +00:00
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/**
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2010-06-30 15:38:06 +00:00
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* Print a listing containing all the pixel formats supported by the
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2009-12-21 21:53:03 +00:00
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* program.
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*/
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void show_pix_fmts(void);
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2011-08-31 06:51:15 +00:00
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/**
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* Print a listing containing all the sample formats supported by the
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* program.
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*/
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int show_sample_fmts(const char *opt, const char *arg);
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2009-03-18 21:35:49 +00:00
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/**
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2010-07-02 00:03:48 +00:00
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* Return a positive value if a line read from standard input
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* starts with [yY], otherwise return 0.
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2009-03-18 21:35:49 +00:00
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*/
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int read_yesno(void);
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2010-04-01 22:34:22 +00:00
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/**
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2010-06-30 15:38:06 +00:00
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* Read the file with name filename, and put its content in a newly
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2010-04-01 22:34:22 +00:00
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* allocated 0-terminated buffer.
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*
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2010-06-30 15:38:06 +00:00
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* @param bufptr location where pointer to buffer is returned
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* @param size location where size of buffer is returned
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2010-04-01 22:34:22 +00:00
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* @return 0 in case of success, a negative value corresponding to an
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* AVERROR error code in case of failure.
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*/
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2011-02-07 09:49:37 +00:00
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int cmdutils_read_file(const char *filename, char **bufptr, size_t *size);
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2010-04-01 22:34:22 +00:00
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2010-09-28 02:05:12 +00:00
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typedef struct {
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int64_t num_faulty_pts; /// Number of incorrect PTS values so far
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int64_t num_faulty_dts; /// Number of incorrect DTS values so far
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int64_t last_pts; /// PTS of the last frame
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int64_t last_dts; /// DTS of the last frame
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} PtsCorrectionContext;
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/**
|
2010-09-28 14:49:55 +00:00
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* Reset the state of the PtsCorrectionContext.
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2010-09-28 02:05:12 +00:00
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*/
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void init_pts_correction(PtsCorrectionContext *ctx);
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/**
|
2010-09-28 14:49:55 +00:00
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* Attempt to guess proper monotonic timestamps for decoded video frames
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2010-09-28 02:05:12 +00:00
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* which might have incorrect times. Input timestamps may wrap around, in
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* which case the output will as well.
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*
|
2010-09-28 14:49:55 +00:00
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* @param pts the pts field of the decoded AVPacket, as passed through
|
2010-09-28 02:05:12 +00:00
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* AVCodecContext.reordered_opaque
|
2010-09-28 14:49:55 +00:00
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* @param dts the dts field of the decoded AVPacket
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|
* @return one of the input values, may be AV_NOPTS_VALUE
|
2010-09-28 02:05:12 +00:00
|
|
|
*/
|
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|
|
int64_t guess_correct_pts(PtsCorrectionContext *ctx, int64_t pts, int64_t dts);
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|
2010-11-04 23:07:04 +00:00
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|
|
/**
|
|
|
|
* Get a file corresponding to a preset file.
|
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|
|
*
|
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|
|
* If is_path is non-zero, look for the file in the path preset_name.
|
2012-03-18 08:26:32 +00:00
|
|
|
* Otherwise search for a file named arg.avpreset in the directories
|
2011-09-29 19:57:29 +00:00
|
|
|
* $AVCONV_DATADIR (if set), $HOME/.avconv, and in the datadir defined
|
2010-11-04 23:07:04 +00:00
|
|
|
* at configuration time, in that order. If no such file is found and
|
|
|
|
* codec_name is defined, then search for a file named
|
2012-03-18 08:26:32 +00:00
|
|
|
* codec_name-preset_name.avpreset in the above-mentioned directories.
|
2010-11-04 23:07:04 +00:00
|
|
|
*
|
|
|
|
* @param filename buffer where the name of the found filename is written
|
|
|
|
* @param filename_size size in bytes of the filename buffer
|
|
|
|
* @param preset_name name of the preset to search
|
|
|
|
* @param is_path tell if preset_name is a filename path
|
|
|
|
* @param codec_name name of the codec for which to look for the
|
|
|
|
* preset, may be NULL
|
|
|
|
*/
|
|
|
|
FILE *get_preset_file(char *filename, size_t filename_size,
|
|
|
|
const char *preset_name, int is_path, const char *codec_name);
|
|
|
|
|
2010-10-12 18:40:26 +00:00
|
|
|
typedef struct {
|
2012-03-23 14:46:30 +00:00
|
|
|
const enum PixelFormat *pix_fmts;
|
2012-01-19 15:10:13 +00:00
|
|
|
} SinkContext;
|
2010-10-12 18:40:26 +00:00
|
|
|
|
2012-01-19 15:10:13 +00:00
|
|
|
extern AVFilter sink;
|
2010-10-12 18:40:26 +00:00
|
|
|
|
2010-10-18 13:57:11 +00:00
|
|
|
/**
|
|
|
|
* Extract a frame from sink.
|
|
|
|
*
|
|
|
|
* @return a negative error in case of failure, 1 if one frame has
|
|
|
|
* been extracted successfully.
|
|
|
|
*/
|
|
|
|
int get_filtered_video_frame(AVFilterContext *sink, AVFrame *frame,
|
|
|
|
AVFilterBufferRef **picref, AVRational *pts_tb);
|
|
|
|
|
2011-08-29 05:03:24 +00:00
|
|
|
/**
|
|
|
|
* Do all the necessary cleanup and abort.
|
|
|
|
* This function is implemented in the avtools, not cmdutils.
|
|
|
|
*/
|
|
|
|
void exit_program(int ret);
|
|
|
|
|
2011-08-29 05:11:57 +00:00
|
|
|
/**
|
|
|
|
* Realloc array to hold new_size elements of elem_size.
|
|
|
|
* Calls exit_program() on failure.
|
|
|
|
*
|
|
|
|
* @param elem_size size in bytes of each element
|
|
|
|
* @param size new element count will be written here
|
|
|
|
* @return reallocated array
|
|
|
|
*/
|
|
|
|
void *grow_array(void *array, int elem_size, int *size, int new_size);
|
|
|
|
|
2011-05-17 14:58:04 +00:00
|
|
|
#endif /* LIBAV_CMDUTILS_H */
|