/* * Various utilities for command line tools * Copyright (c) 2000-2003 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 */ #include <string.h>#include <stdlib.h>#include <errno.h>#include <math.h> /* Include only the enabled headers since some compilers (namely, Sun   Studio) will not omit unused inline functions and create undefined   references to libraries that are not being built. */ #include "config.h"#include "libavformat/avformat.h"#include "libavfilter/avfilter.h"#include "libavdevice/avdevice.h"#include "libswscale/swscale.h"#include "libpostproc/postprocess.h"#include "libavutil/avstring.h"#include "libavutil/parseutils.h"#include "libavutil/pixdesc.h"#include "libavutil/eval.h"#include "libavutil/dict.h"#include "libavutil/opt.h"#include "cmdutils.h"#include "version.h"#if CONFIG_NETWORK#include "libavformat/network.h"#endif#if HAVE_SYS_RESOURCE_H#include <sys/resource.h>#endif AVCodecContext *avcodec_opts[AVMEDIA_TYPE_NB];AVFormatContext *avformat_opts;struct SwsContext *sws_opts;AVDictionary *format_opts, *codec_opts; static const int this_year = 2011; void init_opts(void){    int i;    for (i = 0; i < AVMEDIA_TYPE_NB; i++)        avcodec_opts[i] = avcodec_alloc_context3(NULL);    avformat_opts = avformat_alloc_context();#if CONFIG_SWSCALE    sws_opts = sws_getContext(16, 16, 0, 16, 16, 0, SWS_BICUBIC, NULL, NULL, NULL);#endif} void uninit_opts(void){    int i;    for (i = 0; i < AVMEDIA_TYPE_NB; i++)        av_freep(&avcodec_opts[i]);    av_freep(&avformat_opts->key);    av_freep(&avformat_opts);#if CONFIG_SWSCALE    sws_freeContext(sws_opts);    sws_opts = NULL;#endif    av_dict_free(&format_opts);    av_dict_free(&codec_opts);} void log_callback_help(void* ptr, int level, const char* fmt, va_list vl){    vfprintf(stdout, fmt, vl);} double parse_number_or_die(const char *context, const char *numstr, int type, double min, double max){    char *tail;    const char *error;    double d = av_strtod(numstr, &tail);    if (*tail)        error= "Expected number for %s but found: %s\n";    else if (d < min || d > max)        error= "The value for %s was %s which is not within %f - %f\n";    else if(type == OPT_INT64 && (int64_t)d != d)        error= "Expected int64 for %s but found %s\n";    else if (type == OPT_INT && (int)d != d)        error= "Expected int for %s but found %s\n";    else        return d;    fprintf(stderr, error, context, numstr, min, max);    exit(1);} int64_t parse_time_or_die(const char *context, const char *timestr, int is_duration){    int64_t us;    if (av_parse_time(&us, timestr, is_duration) < 0) {        fprintf(stderr, "Invalid %s specification for %s: %s\n",                is_duration ? "duration" : "date", context, timestr);        exit(1);    }    return us;} void show_help_options(const OptionDef *options, const char *msg, int mask, int value){    const OptionDef *po;    int first;     first = 1;    for(po = options; po->name != NULL; po++) {        char buf[64];        if ((po->flags & mask) == value) {            if (first) {                printf("%s", msg);                first = 0;            }            av_strlcpy(buf, po->name, sizeof(buf));            if (po->flags & HAS_ARG) {                av_strlcat(buf, " ", sizeof(buf));                av_strlcat(buf, po->argname, sizeof(buf));            }            printf("-%-17s  %s\n", buf, po->help);        }    }} static const OptionDef* find_option(const OptionDef *po, const char *name){    while (po->name != NULL) {        if (!strcmp(name, po->name))            break;        po++;    }    return po;} #if defined(_WIN32) && !defined(__MINGW32CE__)#include <windows.h>/* Will be leaked on exit */static char** win32_argv_utf8 = NULL;static int win32_argc = 0; /** * Prepare command line arguments for executable. * For Windows - perform wide-char to UTF-8 conversion. * Input arguments should be main() function arguments. * @param argc_ptr Arguments number (including executable) * @param argv_ptr Arguments list. */static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr){    char *argstr_flat;    wchar_t **argv_w;    int i, buffsize = 0, offset = 0;     if (win32_argv_utf8) {        *argc_ptr = win32_argc;        *argv_ptr = win32_argv_utf8;        return;    }     win32_argc = 0;    argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);    if (win32_argc <= 0 || !argv_w)        return;     /* determine the UTF-8 buffer size (including NULL-termination symbols) */    for (i = 0; i < win32_argc; i++)        buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,                                        NULL, 0, NULL, NULL);     win32_argv_utf8 = av_mallocz(sizeof(char*) * (win32_argc + 1) + buffsize);    argstr_flat     = (char*)win32_argv_utf8 + sizeof(char*) * (win32_argc + 1);    if (win32_argv_utf8 == NULL) {        LocalFree(argv_w);        return;    }     for (i = 0; i < win32_argc; i++) {        win32_argv_utf8[i] = &argstr_flat[offset];        offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,                                      &argstr_flat[offset],                                      buffsize - offset, NULL, NULL);    }    win32_argv_utf8[i] = NULL;    LocalFree(argv_w);     *argc_ptr = win32_argc;    *argv_ptr = win32_argv_utf8;}#elsestatic inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr){    /* nothing to do */}#endif /* WIN32 && !__MINGW32CE__ */ void parse_options(int argc, char **argv, const OptionDef *options,                   int (* parse_arg_function)(const char *opt, const char *arg)){    const char *opt, *arg;    int optindex, handleoptions=1;    const OptionDef *po;     /* perform system-dependent conversions for arguments list */    prepare_app_arguments(&argc, &argv);     /* parse options */    optindex = 1;    while (optindex < argc) {        opt = argv[optindex++];         if (handleoptions && opt[0] == '-' && opt[1] != '\0') {            int bool_val = 1;            if (opt[1] == '-' && opt[2] == '\0') {                handleoptions = 0;                continue;            }            opt++;            po= find_option(options, opt);            if (!po->name && opt[0] == 'n' && opt[1] == 'o') {                /* handle 'no' bool option */                po = find_option(options, opt + 2);                if (!(po->name && (po->flags & OPT_BOOL)))                    goto unknown_opt;                bool_val = 0;            }            if (!po->name)                po= find_option(options, "default");            if (!po->name) {unknown_opt:                fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);                exit(1);            }            arg = NULL;            if (po->flags & HAS_ARG) {                arg = argv[optindex++];                if (!arg) {                    fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);                    exit(1);                }            }            if (po->flags & OPT_STRING) {                char *str;                str = av_strdup(arg);                *po->u.str_arg = str;            } else if (po->flags & OPT_BOOL) {                *po->u.int_arg = bool_val;            } else if (po->flags & OPT_INT) {                *po->u.int_arg = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);            } else if (po->flags & OPT_INT64) {                *po->u.int64_arg = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);            } else if (po->flags & OPT_FLOAT) {                *po->u.float_arg = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);            } else if (po->u.func_arg) {                if (po->u.func_arg(opt, arg) < 0) {                    fprintf(stderr, "%s: failed to set value '%s' for option '%s'\n", argv[0], arg ? arg : "[null]", opt);                    exit(1);                }            }            if(po->flags & OPT_EXIT)                exit(0);        } else {            if (parse_arg_function) {                if (parse_arg_function(NULL, opt) < 0)                    exit(1);            }        }    }} #define FLAGS (o->type == FF_OPT_TYPE_FLAGS) ? AV_DICT_APPEND : 0int opt_default(const char *opt, const char *arg){    const AVOption *o;    if ((o = av_opt_find(avcodec_opts[0], opt, NULL, 0, AV_OPT_SEARCH_CHILDREN)) ||         ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&          (o = av_opt_find(avcodec_opts[0], opt+1, NULL, 0, 0))))        av_dict_set(&codec_opts, opt, arg, FLAGS);    else if ((o = av_opt_find(avformat_opts, opt, NULL, 0, AV_OPT_SEARCH_CHILDREN)))        av_dict_set(&format_opts, opt, arg, FLAGS);    else if ((o = av_opt_find(sws_opts, opt, NULL, 0, AV_OPT_SEARCH_CHILDREN))) {        // XXX we only support sws_flags, not arbitrary sws options        int ret = av_set_string3(sws_opts, opt, arg, 1, NULL);        if (ret < 0) {            av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);            return ret;        }    }     if (o)        return 0;    fprintf(stderr, "Unrecognized option '%s'\n", opt);    return AVERROR_OPTION_NOT_FOUND;} int opt_loglevel(const char *opt, const char *arg){    const struct { const char *name; int level; } log_levels[] = {        { "quiet"  , AV_LOG_QUIET   },        { "panic"  , AV_LOG_PANIC   },        { "fatal"  , AV_LOG_FATAL   },        { "error"  , AV_LOG_ERROR   },        { "warning", AV_LOG_WARNING },        { "info"   , AV_LOG_INFO    },        { "verbose", AV_LOG_VERBOSE },        { "debug"  , AV_LOG_DEBUG   },    };    char *tail;    int level;    int i;     for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {        if (!strcmp(log_levels[i].name, arg)) {            av_log_set_level(log_levels[i].level);            return 0;        }    }     level = strtol(arg, &tail, 10);    if (*tail) {        fprintf(stderr, "Invalid loglevel \"%s\". "                        "Possible levels are numbers or:\n", arg);        for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)            fprintf(stderr, "\"%s\"\n", log_levels[i].name);        exit(1);    }    av_log_set_level(level);    return 0;} int opt_timelimit(const char *opt, const char *arg){#if HAVE_SETRLIMIT    int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);    struct rlimit rl = { lim, lim + 1 };    if (setrlimit(RLIMIT_CPU, &rl))        perror("setrlimit");#else    fprintf(stderr, "Warning: -%s not implemented on this OS\n", opt);#endif    return 0;} void print_error(const char *filename, int err){    char errbuf[128];    const char *errbuf_ptr = errbuf;     if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)        errbuf_ptr = strerror(AVUNERROR(err));    fprintf(stderr, "%s: %s\n", filename, errbuf_ptr);} static int warned_cfg = 0; #define INDENT        1#define SHOW_VERSION  2#define SHOW_CONFIG   4 #define PRINT_LIB_INFO(outstream,libname,LIBNAME,flags)                 \    if (CONFIG_##LIBNAME) {                                             \        const char *indent = flags & INDENT? "  " : "";                 \        if (flags & SHOW_VERSION) {                                     \            unsigned int version = libname##_version();                 \            fprintf(outstream, "%slib%-9s %2d.%3d.%2d / %2d.%3d.%2d\n", \                    indent, #libname,                                   \                    LIB##LIBNAME##_VERSION_MAJOR,                       \                    LIB##LIBNAME##_VERSION_MINOR,                       \                    LIB##LIBNAME##_VERSION_MICRO,                       \                    version >> 16, version >> 8 & 0xff, version & 0xff); \        }                                                               \        if (flags & SHOW_CONFIG) {                                      \            const char *cfg = libname##_configuration();                \            if (strcmp(FFMPEG_CONFIGURATION, cfg)) {                    \                if (!warned_cfg) {                                      \                    fprintf(outstream,                                  \                            "%sWARNING: library configuration mismatch\n", \                            indent);                                    \                    warned_cfg = 1;                                     \                }                                                       \                fprintf(stderr, "%s%-11s configuration: %s\n",          \                        indent, #libname, cfg);                         \            }                                                           \        }                                                               \    }                                                                   \ static void print_all_libs_info(FILE* outstream, int flags){    PRINT_LIB_INFO(outstream, avutil,   AVUTIL,   flags);    PRINT_LIB_INFO(outstream, avcodec,  AVCODEC,  flags);    PRINT_LIB_INFO(outstream, avformat, AVFORMAT, flags);    PRINT_LIB_INFO(outstream, avdevice, AVDEVICE, flags);    PRINT_LIB_INFO(outstream, avfilter, AVFILTER, flags);    PRINT_LIB_INFO(outstream, swscale,  SWSCALE,  flags);    PRINT_LIB_INFO(outstream, postproc, POSTPROC, flags);} void show_banner(void){    fprintf(stderr, "%s version " FFMPEG_VERSION ", Copyright (c) %d-%d the FFmpeg developers\n",            program_name, program_birth_year, this_year);    fprintf(stderr, "  built on %s %s with %s %s\n",            __DATE__, __TIME__, CC_TYPE, CC_VERSION);    fprintf(stderr, "  configuration: " FFMPEG_CONFIGURATION "\n");    print_all_libs_info(stderr, INDENT|SHOW_CONFIG);    print_all_libs_info(stderr, INDENT|SHOW_VERSION);} int opt_version(const char *opt, const char *arg) {    printf("%s " FFMPEG_VERSION "\n", program_name);    print_all_libs_info(stdout, SHOW_VERSION);    return 0;} int opt_license(const char *opt, const char *arg){    printf(#if CONFIG_NONFREE    "This version of %s has nonfree parts compiled in.\n"    "Therefore it is not legally redistributable.\n",    program_name#elif CONFIG_GPLV3    "%s is free software; you can redistribute it and/or modify\n"    "it under the terms of the GNU General Public License as published by\n"    "the Free Software Foundation; either version 3 of the License, or\n"    "(at your option) any later version.\n"    "\n"    "%s is distributed in the hope that it will be useful,\n"    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"    "GNU General Public License for more details.\n"    "\n"    "You should have received a copy of the GNU General Public License\n"    "along with %s.  If not, see <http://www.gnu.org/licenses/>.\n",    program_name, program_name, program_name#elif CONFIG_GPL    "%s is free software; you can redistribute it and/or modify\n"    "it under the terms of the GNU General Public License as published by\n"    "the Free Software Foundation; either version 2 of the License, or\n"    "(at your option) any later version.\n"    "\n"    "%s is distributed in the hope that it will be useful,\n"    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"    "GNU General Public License for more details.\n"    "\n"    "You should have received a copy of the GNU General Public License\n"    "along with %s; if not, write to the Free Software\n"    "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",    program_name, program_name, program_name#elif CONFIG_LGPLV3    "%s is free software; you can redistribute it and/or modify\n"    "it under the terms of the GNU Lesser General Public License as published by\n"    "the Free Software Foundation; either version 3 of the License, or\n"    "(at your option) any later version.\n"    "\n"    "%s is distributed in the hope that it will be useful,\n"    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"    "GNU Lesser General Public License for more details.\n"    "\n"    "You should have received a copy of the GNU Lesser General Public License\n"    "along with %s.  If not, see <http://www.gnu.org/licenses/>.\n",    program_name, program_name, program_name#else    "%s is free software; you can redistribute it and/or\n"    "modify it under the terms of the GNU Lesser General Public\n"    "License as published by the Free Software Foundation; either\n"    "version 2.1 of the License, or (at your option) any later version.\n"    "\n"    "%s is distributed in the hope that it will be useful,\n"    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n"    "Lesser General Public License for more details.\n"    "\n"    "You should have received a copy of the GNU Lesser General Public\n"    "License along with %s; if not, write to the Free Software\n"    "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",    program_name, program_name, program_name#endif    );    return 0;} 

Lines 1–500 of 829. Load more