mirror of
https://github.com/FFmpeg/FFmpeg.git
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3650cb2dfa
This was added in early 2013 and abandoned several months later; as far as I can tell, there are no external users. Future OpenCL use will be via hwcontext, which requires neither special OpenCL-only API nor global state in libavutil. All internal users are also deleted - this is just the unsharp filter (replaced by unsharp_opencl, which is more flexible) and the deshake filter (no replacement).
646 lines
23 KiB
C
646 lines
23 KiB
C
/*
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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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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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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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* FFmpeg is distributed in the hope that it will be useful,
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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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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef FFTOOLS_CMDUTILS_H
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#define FFTOOLS_CMDUTILS_H
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#include <stdint.h>
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#include "config.h"
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#include "libavcodec/avcodec.h"
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#include "libavfilter/avfilter.h"
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#include "libavformat/avformat.h"
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#include "libswscale/swscale.h"
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#ifdef _WIN32
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#undef main /* We don't want SDL to override our main() */
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#endif
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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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/**
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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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extern AVCodecContext *avcodec_opts[AVMEDIA_TYPE_NB];
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extern AVFormatContext *avformat_opts;
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extern AVDictionary *sws_dict;
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extern AVDictionary *swr_opts;
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extern AVDictionary *format_opts, *codec_opts, *resample_opts;
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extern int hide_banner;
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/**
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* Register a program-specific cleanup routine.
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*/
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void register_exit(void (*cb)(int ret));
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/**
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* Wraps exit with a program-specific cleanup routine.
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*/
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void exit_program(int ret) av_noreturn;
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/**
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* Initialize dynamic library loading
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*/
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void init_dynload(void);
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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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/**
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* Trivial log callback.
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* Only suitable for opt_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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/**
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* Override the cpuflags.
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*/
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int opt_cpuflags(void *optctx, const char *opt, const char *arg);
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/**
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* Fallback for options that are not explicitly handled, these will be
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* parsed through AVOptions.
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*/
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int opt_default(void *optctx, const char *opt, const char *arg);
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/**
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* Set the libav* libraries log level.
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*/
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int opt_loglevel(void *optctx, const char *opt, const char *arg);
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int opt_report(const char *opt);
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int opt_max_alloc(void *optctx, const char *opt, const char *arg);
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int opt_codec_debug(void *optctx, const char *opt, const char *arg);
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/**
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* Limit the execution time.
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*/
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int opt_timelimit(void *optctx, const char *opt, const char *arg);
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/**
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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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* parsed or the corresponding value is invalid.
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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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* corresponding command line option name)
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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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* @param min the minimum valid accepted value
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* @param max the maximum valid accepted value
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*/
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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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/**
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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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* 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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* corresponding command line option name)
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* @param timestr the string to be parsed
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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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* date
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*
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* @see av_parse_time()
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*/
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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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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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uint64_t ui64;
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float f;
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double dbl;
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} u;
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} SpecifierOpt;
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typedef struct OptionDef {
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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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#define OPT_VIDEO 0x0010
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#define OPT_AUDIO 0x0020
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#define OPT_INT 0x0080
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#define OPT_FLOAT 0x0100
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#define OPT_SUBTITLE 0x0200
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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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#define OPT_PERFILE 0x2000 /* the option is per-file (currently ffmpeg-only).
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implied by OPT_OFFSET or OPT_SPEC */
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#define OPT_OFFSET 0x4000 /* option is specified as an offset in a passed optctx */
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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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#define OPT_TIME 0x10000
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#define OPT_DOUBLE 0x20000
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#define OPT_INPUT 0x40000
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#define OPT_OUTPUT 0x80000
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union {
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void *dst_ptr;
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int (*func_arg)(void *, const char *, const char *);
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size_t off;
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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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/**
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* Print help for all options matching specified flags.
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*
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* @param options a list of options
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* @param msg title of this group. Only printed if at least one option matches.
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* @param req_flags print only options which have all those flags set.
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* @param rej_flags don't print options which have any of those flags set.
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* @param alt_flags print only options that have at least one of those flags set
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*/
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void show_help_options(const OptionDef *options, const char *msg, int req_flags,
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int rej_flags, int alt_flags);
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#if CONFIG_AVDEVICE
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#define CMDUTILS_COMMON_OPTIONS_AVDEVICE \
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{ "sources" , OPT_EXIT | HAS_ARG, { .func_arg = show_sources }, \
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"list sources of the input device", "device" }, \
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{ "sinks" , OPT_EXIT | HAS_ARG, { .func_arg = show_sinks }, \
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"list sinks of the output device", "device" }, \
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#else
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#define CMDUTILS_COMMON_OPTIONS_AVDEVICE
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#endif
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#define CMDUTILS_COMMON_OPTIONS \
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{ "L", OPT_EXIT, { .func_arg = show_license }, "show license" }, \
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{ "h", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
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{ "?", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
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{ "help", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
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{ "-help", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
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{ "version", OPT_EXIT, { .func_arg = show_version }, "show version" }, \
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{ "buildconf", OPT_EXIT, { .func_arg = show_buildconf }, "show build configuration" }, \
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{ "formats", OPT_EXIT, { .func_arg = show_formats }, "show available formats" }, \
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{ "muxers", OPT_EXIT, { .func_arg = show_muxers }, "show available muxers" }, \
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{ "demuxers", OPT_EXIT, { .func_arg = show_demuxers }, "show available demuxers" }, \
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{ "devices", OPT_EXIT, { .func_arg = show_devices }, "show available devices" }, \
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{ "codecs", OPT_EXIT, { .func_arg = show_codecs }, "show available codecs" }, \
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{ "decoders", OPT_EXIT, { .func_arg = show_decoders }, "show available decoders" }, \
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{ "encoders", OPT_EXIT, { .func_arg = show_encoders }, "show available encoders" }, \
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{ "bsfs", OPT_EXIT, { .func_arg = show_bsfs }, "show available bit stream filters" }, \
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{ "protocols", OPT_EXIT, { .func_arg = show_protocols }, "show available protocols" }, \
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{ "filters", OPT_EXIT, { .func_arg = show_filters }, "show available filters" }, \
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{ "pix_fmts", OPT_EXIT, { .func_arg = show_pix_fmts }, "show available pixel formats" }, \
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{ "layouts", OPT_EXIT, { .func_arg = show_layouts }, "show standard channel layouts" }, \
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{ "sample_fmts", OPT_EXIT, { .func_arg = show_sample_fmts }, "show available audio sample formats" }, \
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{ "colors", OPT_EXIT, { .func_arg = show_colors }, "show available color names" }, \
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{ "loglevel", HAS_ARG, { .func_arg = opt_loglevel }, "set logging level", "loglevel" }, \
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{ "v", HAS_ARG, { .func_arg = opt_loglevel }, "set logging level", "loglevel" }, \
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{ "report", 0, { (void*)opt_report }, "generate a report" }, \
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{ "max_alloc", HAS_ARG, { .func_arg = opt_max_alloc }, "set maximum size of a single allocated block", "bytes" }, \
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{ "cpuflags", HAS_ARG | OPT_EXPERT, { .func_arg = opt_cpuflags }, "force specific cpu flags", "flags" }, \
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{ "hide_banner", OPT_BOOL | OPT_EXPERT, {&hide_banner}, "do not show program banner", "hide_banner" }, \
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CMDUTILS_COMMON_OPTIONS_AVDEVICE \
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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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/**
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* Per-fftool specific help handler. Implemented in each
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* fftool, called by show_help().
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*/
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void show_help_default(const char *opt, const char *arg);
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/**
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* Generic -h handler common to all fftools.
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*/
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int show_help(void *optctx, const char *opt, const char *arg);
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/**
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* Parse the command line arguments.
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*
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* @param optctx an opaque options context
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* @param argc number of command line arguments
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* @param argv values of command line arguments
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* @param options Array with the definitions required to interpret every
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* option of the form: -option_name [argument]
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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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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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/**
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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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int parse_option(void *optctx, const char *opt, const char *arg,
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const OptionDef *options);
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/**
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* An option extracted from the commandline.
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* Cannot use AVDictionary because of options like -map which can be
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* used multiple times.
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*/
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typedef struct Option {
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const OptionDef *opt;
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const char *key;
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const char *val;
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} Option;
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typedef struct OptionGroupDef {
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/**< group name */
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const char *name;
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/**
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* Option to be used as group separator. Can be NULL for groups which
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* are terminated by a non-option argument (e.g. ffmpeg output files)
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*/
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const char *sep;
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/**
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* Option flags that must be set on each option that is
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* applied to this group
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*/
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int flags;
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} OptionGroupDef;
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typedef struct OptionGroup {
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const OptionGroupDef *group_def;
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const char *arg;
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Option *opts;
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int nb_opts;
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AVDictionary *codec_opts;
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AVDictionary *format_opts;
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AVDictionary *resample_opts;
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AVDictionary *sws_dict;
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AVDictionary *swr_opts;
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} OptionGroup;
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/**
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* A list of option groups that all have the same group type
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* (e.g. input files or output files)
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*/
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typedef struct OptionGroupList {
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const OptionGroupDef *group_def;
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OptionGroup *groups;
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int nb_groups;
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} OptionGroupList;
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typedef struct OptionParseContext {
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OptionGroup global_opts;
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OptionGroupList *groups;
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int nb_groups;
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/* parsing state */
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OptionGroup cur_group;
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} OptionParseContext;
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/**
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* Parse an options group and write results into optctx.
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*
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* @param optctx an app-specific options context. NULL for global options group
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*/
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int parse_optgroup(void *optctx, OptionGroup *g);
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/**
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* Split the commandline into an intermediate form convenient for further
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* processing.
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*
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* The commandline is assumed to be composed of options which either belong to a
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* group (those with OPT_SPEC, OPT_OFFSET or OPT_PERFILE) or are global
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* (everything else).
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*
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* A group (defined by an OptionGroupDef struct) is a sequence of options
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* terminated by either a group separator option (e.g. -i) or a parameter that
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* is not an option (doesn't start with -). A group without a separator option
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* must always be first in the supplied groups list.
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*
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* All options within the same group are stored in one OptionGroup struct in an
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* OptionGroupList, all groups with the same group definition are stored in one
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* OptionGroupList in OptionParseContext.groups. The order of group lists is the
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* same as the order of group definitions.
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*/
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int split_commandline(OptionParseContext *octx, int argc, char *argv[],
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const OptionDef *options,
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const OptionGroupDef *groups, int nb_groups);
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/**
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* Free all allocated memory in an OptionParseContext.
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*/
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void uninit_parse_context(OptionParseContext *octx);
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/**
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* Find the '-loglevel' option in the command line args and apply it.
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*/
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void parse_loglevel(int argc, char **argv, const OptionDef *options);
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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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/**
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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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* @param spec A stream specifier of the [v|a|s|d]:[\<stream index\>] form.
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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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/**
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* Filter out options for given codec.
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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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* @param opts dictionary to place options in
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* @param codec_id ID of the codec that should be filtered for
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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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* @param codec The particular codec for which the options should be filtered.
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* If null, the default one is looked up according to the codec id.
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* @return a pointer to the created dictionary
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*/
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AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
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AVFormatContext *s, AVStream *st, AVCodec *codec);
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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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*/
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AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
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AVDictionary *codec_opts);
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/**
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* Print an error message to stderr, indicating filename and a human
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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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void print_error(const char *filename, int err);
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/**
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* Print the program banner to stderr. The banner contents depend on the
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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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*/
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void show_banner(int argc, char **argv, const OptionDef *options);
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/**
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* Print the version of the program to stdout. The version message
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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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* This option processing function does not utilize the arguments.
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*/
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int show_version(void *optctx, const char *opt, const char *arg);
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/**
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* Print the build configuration of the program to stdout. The contents
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* depend on the definition of FFMPEG_CONFIGURATION.
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* This option processing function does not utilize the arguments.
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*/
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int show_buildconf(void *optctx, const char *opt, const char *arg);
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/**
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* Print the license of the program to stdout. The license depends on
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* the license of the libraries compiled into the program.
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* This option processing function does not utilize the arguments.
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*/
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int show_license(void *optctx, const char *opt, const char *arg);
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/**
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* Print a listing containing all the formats supported by the
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* program (including devices).
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* This option processing function does not utilize the arguments.
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*/
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int show_formats(void *optctx, const char *opt, const char *arg);
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/**
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* Print a listing containing all the muxers supported by the
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* program (including devices).
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* This option processing function does not utilize the arguments.
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*/
|
|
int show_muxers(void *optctx, const char *opt, const char *arg);
|
|
|
|
/**
|
|
* Print a listing containing all the demuxer supported by the
|
|
* program (including devices).
|
|
* This option processing function does not utilize the arguments.
|
|
*/
|
|
int show_demuxers(void *optctx, const char *opt, const char *arg);
|
|
|
|
/**
|
|
* Print a listing containing all the devices supported by the
|
|
* program.
|
|
* This option processing function does not utilize the arguments.
|
|
*/
|
|
int show_devices(void *optctx, const char *opt, const char *arg);
|
|
|
|
#if CONFIG_AVDEVICE
|
|
/**
|
|
* Print a listing containing autodetected sinks of the output device.
|
|
* Device name with options may be passed as an argument to limit results.
|
|
*/
|
|
int show_sinks(void *optctx, const char *opt, const char *arg);
|
|
|
|
/**
|
|
* Print a listing containing autodetected sources of the input device.
|
|
* Device name with options may be passed as an argument to limit results.
|
|
*/
|
|
int show_sources(void *optctx, const char *opt, const char *arg);
|
|
#endif
|
|
|
|
/**
|
|
* Print a listing containing all the codecs supported by the
|
|
* program.
|
|
* This option processing function does not utilize the arguments.
|
|
*/
|
|
int show_codecs(void *optctx, const char *opt, const char *arg);
|
|
|
|
/**
|
|
* Print a listing containing all the decoders supported by the
|
|
* program.
|
|
*/
|
|
int show_decoders(void *optctx, const char *opt, const char *arg);
|
|
|
|
/**
|
|
* Print a listing containing all the encoders supported by the
|
|
* program.
|
|
*/
|
|
int show_encoders(void *optctx, const char *opt, const char *arg);
|
|
|
|
/**
|
|
* Print a listing containing all the filters supported by the
|
|
* program.
|
|
* This option processing function does not utilize the arguments.
|
|
*/
|
|
int show_filters(void *optctx, const char *opt, const char *arg);
|
|
|
|
/**
|
|
* Print a listing containing all the bit stream filters supported by the
|
|
* program.
|
|
* This option processing function does not utilize the arguments.
|
|
*/
|
|
int show_bsfs(void *optctx, const char *opt, const char *arg);
|
|
|
|
/**
|
|
* Print a listing containing all the protocols supported by the
|
|
* program.
|
|
* This option processing function does not utilize the arguments.
|
|
*/
|
|
int show_protocols(void *optctx, const char *opt, const char *arg);
|
|
|
|
/**
|
|
* Print a listing containing all the pixel formats supported by the
|
|
* program.
|
|
* This option processing function does not utilize the arguments.
|
|
*/
|
|
int show_pix_fmts(void *optctx, const char *opt, const char *arg);
|
|
|
|
/**
|
|
* Print a listing containing all the standard channel layouts supported by
|
|
* the program.
|
|
* This option processing function does not utilize the arguments.
|
|
*/
|
|
int show_layouts(void *optctx, const char *opt, const char *arg);
|
|
|
|
/**
|
|
* Print a listing containing all the sample formats supported by the
|
|
* program.
|
|
*/
|
|
int show_sample_fmts(void *optctx, const char *opt, const char *arg);
|
|
|
|
/**
|
|
* Print a listing containing all the color names and values recognized
|
|
* by the program.
|
|
*/
|
|
int show_colors(void *optctx, const char *opt, const char *arg);
|
|
|
|
/**
|
|
* Return a positive value if a line read from standard input
|
|
* starts with [yY], otherwise return 0.
|
|
*/
|
|
int read_yesno(void);
|
|
|
|
/**
|
|
* Get a file corresponding to a preset file.
|
|
*
|
|
* If is_path is non-zero, look for the file in the path preset_name.
|
|
* Otherwise search for a file named arg.ffpreset in the directories
|
|
* $FFMPEG_DATADIR (if set), $HOME/.ffmpeg, and in the datadir defined
|
|
* at configuration time or in a "ffpresets" folder along the executable
|
|
* on win32, in that order. If no such file is found and
|
|
* codec_name is defined, then search for a file named
|
|
* codec_name-preset_name.avpreset in the above-mentioned directories.
|
|
*
|
|
* @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);
|
|
|
|
/**
|
|
* Realloc array to hold new_size elements of elem_size.
|
|
* Calls exit() on failure.
|
|
*
|
|
* @param array array to reallocate
|
|
* @param elem_size size in bytes of each element
|
|
* @param size new element count will be written here
|
|
* @param new_size number of elements to place in reallocated array
|
|
* @return reallocated array
|
|
*/
|
|
void *grow_array(void *array, int elem_size, int *size, int new_size);
|
|
|
|
#define media_type_string av_get_media_type_string
|
|
|
|
#define GROW_ARRAY(array, nb_elems)\
|
|
array = grow_array(array, sizeof(*array), &nb_elems, nb_elems + 1)
|
|
|
|
#define GET_PIX_FMT_NAME(pix_fmt)\
|
|
const char *name = av_get_pix_fmt_name(pix_fmt);
|
|
|
|
#define GET_SAMPLE_FMT_NAME(sample_fmt)\
|
|
const char *name = av_get_sample_fmt_name(sample_fmt)
|
|
|
|
#define GET_SAMPLE_RATE_NAME(rate)\
|
|
char name[16];\
|
|
snprintf(name, sizeof(name), "%d", rate);
|
|
|
|
#define GET_CH_LAYOUT_NAME(ch_layout)\
|
|
char name[16];\
|
|
snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
|
|
|
|
#define GET_CH_LAYOUT_DESC(ch_layout)\
|
|
char name[128];\
|
|
av_get_channel_layout_string(name, sizeof(name), 0, ch_layout);
|
|
|
|
double get_rotation(AVStream *st);
|
|
|
|
#endif /* FFTOOLS_CMDUTILS_H */
|