cb50ada4f8
This allows -print_format to accept string of the form WRITER=OPTIONS, as required by the pending compact writer patch.
881 lines
27 KiB
C
881 lines
27 KiB
C
/*
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* ffprobe : Simple Media Prober based on the FFmpeg libraries
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* Copyright (c) 2007-2010 Stefano Sabatini
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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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#include "config.h"
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#include "libavformat/avformat.h"
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#include "libavcodec/avcodec.h"
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#include "libavutil/avstring.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/dict.h"
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#include "libavdevice/avdevice.h"
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#include "cmdutils.h"
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const char program_name[] = "ffprobe";
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const int program_birth_year = 2007;
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static int do_show_format = 0;
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static int do_show_packets = 0;
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static int do_show_streams = 0;
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static int show_value_unit = 0;
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static int use_value_prefix = 0;
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static int use_byte_value_binary_prefix = 0;
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static int use_value_sexagesimal_format = 0;
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static char *print_format;
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static const OptionDef options[];
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/* FFprobe context */
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static const char *input_filename;
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static AVInputFormat *iformat = NULL;
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static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
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static const char *decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };
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static const char *unit_second_str = "s" ;
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static const char *unit_hertz_str = "Hz" ;
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static const char *unit_byte_str = "byte" ;
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static const char *unit_bit_per_second_str = "bit/s";
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void exit_program(int ret)
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{
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exit(ret);
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}
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static char *value_string(char *buf, int buf_size, double val, const char *unit)
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{
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if (unit == unit_second_str && use_value_sexagesimal_format) {
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double secs;
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int hours, mins;
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secs = val;
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mins = (int)secs / 60;
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secs = secs - mins * 60;
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hours = mins / 60;
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mins %= 60;
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snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
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} else if (use_value_prefix) {
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const char *prefix_string;
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int index;
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if (unit == unit_byte_str && use_byte_value_binary_prefix) {
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index = (int) (log(val)/log(2)) / 10;
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index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) -1);
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val /= pow(2, index*10);
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prefix_string = binary_unit_prefixes[index];
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} else {
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index = (int) (log10(val)) / 3;
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index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) -1);
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val /= pow(10, index*3);
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prefix_string = decimal_unit_prefixes[index];
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}
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snprintf(buf, buf_size, "%.3f%s%s%s", val, prefix_string || show_value_unit ? " " : "",
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prefix_string, show_value_unit ? unit : "");
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} else {
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snprintf(buf, buf_size, "%f%s%s", val, show_value_unit ? " " : "",
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show_value_unit ? unit : "");
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}
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return buf;
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}
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static char *time_value_string(char *buf, int buf_size, int64_t val, const AVRational *time_base)
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{
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if (val == AV_NOPTS_VALUE) {
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snprintf(buf, buf_size, "N/A");
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} else {
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value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
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}
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return buf;
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}
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static char *ts_value_string (char *buf, int buf_size, int64_t ts)
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{
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if (ts == AV_NOPTS_VALUE) {
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snprintf(buf, buf_size, "N/A");
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} else {
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snprintf(buf, buf_size, "%"PRId64, ts);
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}
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return buf;
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}
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/* WRITERS API */
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typedef struct WriterContext WriterContext;
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typedef struct Writer {
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int priv_size; ///< private size for the writer context
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const char *name;
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int (*init) (WriterContext *wctx, const char *args, void *opaque);
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void (*uninit)(WriterContext *wctx);
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void (*print_header)(WriterContext *ctx);
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void (*print_footer)(WriterContext *ctx);
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void (*print_chapter_header)(WriterContext *wctx, const char *);
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void (*print_chapter_footer)(WriterContext *wctx, const char *);
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void (*print_section_header)(WriterContext *wctx, const char *);
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void (*print_section_footer)(WriterContext *wctx, const char *);
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void (*print_integer) (WriterContext *wctx, const char *, int);
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void (*print_string) (WriterContext *wctx, const char *, const char *);
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void (*show_tags) (WriterContext *wctx, AVDictionary *dict);
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} Writer;
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struct WriterContext {
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const AVClass *class; ///< class of the writer
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const Writer *writer; ///< the Writer of which this is an instance
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char *name; ///< name of this writer instance
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void *priv; ///< private data for use by the filter
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unsigned int nb_item; ///< number of the item printed in the given section, starting at 0
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unsigned int nb_section; ///< number of the section printed in the given section sequence, starting at 0
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unsigned int nb_chapter; ///< number of the chapter, starting at 0
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};
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static void writer_close(WriterContext **wctx)
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{
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if (*wctx && (*wctx)->writer->uninit)
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(*wctx)->writer->uninit(*wctx);
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av_freep(&((*wctx)->priv));
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av_freep(wctx);
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}
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static int writer_open(WriterContext **wctx, const Writer *writer,
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const char *args, void *opaque)
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{
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int ret = 0;
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if (!(*wctx = av_malloc(sizeof(WriterContext)))) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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if (!((*wctx)->priv = av_mallocz(writer->priv_size))) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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(*wctx)->writer = writer;
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if ((*wctx)->writer->init)
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ret = (*wctx)->writer->init(*wctx, args, opaque);
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if (ret < 0)
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goto fail;
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return 0;
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fail:
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writer_close(wctx);
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return ret;
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}
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static inline void writer_print_header(WriterContext *wctx)
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{
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if (wctx->writer->print_header)
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wctx->writer->print_header(wctx);
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wctx->nb_chapter = 0;
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}
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static inline void writer_print_footer(WriterContext *wctx)
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{
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if (wctx->writer->print_footer)
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wctx->writer->print_footer(wctx);
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}
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static inline void writer_print_chapter_header(WriterContext *wctx,
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const char *header)
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{
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if (wctx->writer->print_chapter_header)
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wctx->writer->print_chapter_header(wctx, header);
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wctx->nb_section = 0;
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}
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static inline void writer_print_chapter_footer(WriterContext *wctx,
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const char *footer)
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{
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if (wctx->writer->print_chapter_footer)
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wctx->writer->print_chapter_footer(wctx, footer);
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wctx->nb_chapter++;
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}
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static inline void writer_print_section_header(WriterContext *wctx,
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const char *header)
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{
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if (wctx->writer->print_section_header)
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wctx->writer->print_section_header(wctx, header);
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wctx->nb_item = 0;
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}
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static inline void writer_print_section_footer(WriterContext *wctx,
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const char *footer)
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{
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if (wctx->writer->print_section_footer)
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wctx->writer->print_section_footer(wctx, footer);
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wctx->nb_section++;
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}
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static inline void writer_print_integer(WriterContext *wctx,
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const char *key, int val)
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{
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wctx->writer->print_integer(wctx, key, val);
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wctx->nb_item++;
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}
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static inline void writer_print_string(WriterContext *wctx,
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const char *key, const char *val)
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{
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wctx->writer->print_string(wctx, key, val);
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wctx->nb_item++;
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}
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static inline void writer_show_tags(WriterContext *wctx, AVDictionary *dict)
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{
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wctx->writer->show_tags(wctx, dict);
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}
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#define MAX_REGISTERED_WRITERS_NB 64
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static Writer *registered_writers[MAX_REGISTERED_WRITERS_NB + 1];
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static int writer_register(Writer *writer)
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{
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static int next_registered_writer_idx = 0;
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if (next_registered_writer_idx == MAX_REGISTERED_WRITERS_NB)
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return AVERROR(ENOMEM);
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registered_writers[next_registered_writer_idx++] = writer;
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return 0;
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}
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static Writer *writer_get_by_name(const char *name)
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{
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int i;
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for (i = 0; registered_writers[i]; i++)
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if (!strcmp(registered_writers[i]->name, name))
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return registered_writers[i];
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return NULL;
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}
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/* Print helpers */
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struct print_buf {
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char *s;
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int len;
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};
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static char *fast_asprintf(struct print_buf *pbuf, const char *fmt, ...)
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{
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va_list va;
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int len;
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va_start(va, fmt);
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len = vsnprintf(NULL, 0, fmt, va);
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va_end(va);
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if (len < 0)
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goto fail;
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if (pbuf->len < len) {
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char *p = av_realloc(pbuf->s, len + 1);
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if (!p)
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goto fail;
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pbuf->s = p;
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pbuf->len = len;
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}
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va_start(va, fmt);
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len = vsnprintf(pbuf->s, len + 1, fmt, va);
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va_end(va);
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if (len < 0)
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goto fail;
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return pbuf->s;
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fail:
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av_freep(&pbuf->s);
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pbuf->len = 0;
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return NULL;
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}
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/* WRITERS */
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/* Default output */
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static void default_print_footer(WriterContext *wctx)
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{
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printf("\n");
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}
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static void default_print_chapter_header(WriterContext *wctx, const char *chapter)
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{
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if (wctx->nb_chapter)
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printf("\n");
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}
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static void default_print_section_header(WriterContext *wctx, const char *section)
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{
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if (wctx->nb_section)
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printf("\n");
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printf("[%s]\n", section);
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}
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static void default_print_section_footer(WriterContext *wctx, const char *section)
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{
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printf("[/%s]", section);
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}
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static void default_print_str(WriterContext *wctx, const char *key, const char *value)
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{
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printf("%s=%s\n", key, value);
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}
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static void default_print_int(WriterContext *wctx, const char *key, int value)
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{
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printf("%s=%d\n", key, value);
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}
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static void default_show_tags(WriterContext *wctx, AVDictionary *dict)
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{
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AVDictionaryEntry *tag = NULL;
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while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
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printf("TAG:");
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writer_print_string(wctx, tag->key, tag->value);
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}
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}
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static Writer default_writer = {
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.name = "default",
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.print_footer = default_print_footer,
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.print_chapter_header = default_print_chapter_header,
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.print_section_header = default_print_section_header,
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.print_section_footer = default_print_section_footer,
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.print_integer = default_print_int,
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.print_string = default_print_str,
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.show_tags = default_show_tags
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};
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/* JSON output */
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typedef struct {
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int multiple_entries; ///< tells if the given chapter requires multiple entries
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} JSONContext;
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static char *json_escape_str(const char *s)
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{
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static const char json_escape[] = {'"', '\\', '\b', '\f', '\n', '\r', '\t', 0};
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static const char json_subst[] = {'"', '\\', 'b', 'f', 'n', 'r', 't', 0};
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char *ret, *p;
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int i, len = 0;
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// compute the length of the escaped string
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for (i = 0; s[i]; i++) {
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if (strchr(json_escape, s[i])) len += 2; // simple escape
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else if ((unsigned char)s[i] < 32) len += 6; // handle non-printable chars
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else len += 1; // char copy
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}
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p = ret = av_malloc(len + 1);
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if (!p)
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return NULL;
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for (i = 0; s[i]; i++) {
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char *q = strchr(json_escape, s[i]);
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if (q) {
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*p++ = '\\';
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*p++ = json_subst[q - json_escape];
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} else if ((unsigned char)s[i] < 32) {
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snprintf(p, 7, "\\u00%02x", s[i] & 0xff);
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p += 6;
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} else {
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*p++ = s[i];
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}
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}
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*p = 0;
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return ret;
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}
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static void json_print_header(WriterContext *wctx)
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{
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printf("{");
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}
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static void json_print_footer(WriterContext *wctx)
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{
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printf("\n}\n");
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}
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static void json_print_chapter_header(WriterContext *wctx, const char *chapter)
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{
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JSONContext *json = wctx->priv;
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char *chapter_esc;
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if (wctx->nb_chapter)
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printf(",");
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json->multiple_entries = !strcmp(chapter, "packets") || !strcmp(chapter, "streams");
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chapter_esc = json_escape_str(chapter);
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printf("\n \"%s\":%s", chapter_esc ? chapter_esc : "",
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json->multiple_entries ? " [" : " ");
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av_free(chapter_esc);
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}
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static void json_print_chapter_footer(WriterContext *wctx, const char *chapter)
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{
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JSONContext *json = wctx->priv;
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if (json->multiple_entries)
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printf("]");
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}
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static void json_print_section_header(WriterContext *wctx, const char *section)
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{
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if (wctx->nb_section) printf(",");
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printf("{\n");
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}
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static void json_print_section_footer(WriterContext *wctx, const char *section)
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{
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printf("\n }");
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}
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static inline void json_print_item_str(WriterContext *wctx,
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const char *key, const char *value,
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const char *indent)
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{
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char *key_esc = json_escape_str(key);
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char *value_esc = json_escape_str(value);
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printf("%s\"%s\": \"%s\"", indent,
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key_esc ? key_esc : "",
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value_esc ? value_esc : "");
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av_free(key_esc);
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av_free(value_esc);
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}
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#define INDENT " "
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static void json_print_str(WriterContext *wctx, const char *key, const char *value)
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{
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if (wctx->nb_item) printf(",\n");
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json_print_item_str(wctx, key, value, INDENT);
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}
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static void json_print_int(WriterContext *wctx, const char *key, int value)
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{
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char *key_esc = json_escape_str(key);
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if (wctx->nb_item) printf(",\n");
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printf(INDENT "\"%s\": %d", key_esc ? key_esc : "", value);
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av_free(key_esc);
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}
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static void json_show_tags(WriterContext *wctx, AVDictionary *dict)
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{
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AVDictionaryEntry *tag = NULL;
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int is_first = 1;
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if (!dict)
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return;
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printf(",\n" INDENT "\"tags\": {\n");
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while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
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if (is_first) is_first = 0;
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else printf(",\n");
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json_print_item_str(wctx, tag->key, tag->value, INDENT INDENT);
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}
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printf("\n }");
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}
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static Writer json_writer = {
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.name = "json",
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.priv_size = sizeof(JSONContext),
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.print_header = json_print_header,
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.print_footer = json_print_footer,
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.print_chapter_header = json_print_chapter_header,
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.print_chapter_footer = json_print_chapter_footer,
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.print_section_header = json_print_section_header,
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.print_section_footer = json_print_section_footer,
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.print_integer = json_print_int,
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.print_string = json_print_str,
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.show_tags = json_show_tags,
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};
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static void writer_register_all(void)
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{
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static int initialized;
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if (initialized)
|
|
return;
|
|
initialized = 1;
|
|
|
|
writer_register(&default_writer);
|
|
writer_register(&json_writer);
|
|
}
|
|
|
|
#define print_fmt(k, f, ...) do { \
|
|
if (fast_asprintf(&pbuf, f, __VA_ARGS__)) \
|
|
writer_print_string(w, k, pbuf.s); \
|
|
} while (0)
|
|
|
|
#define print_int(k, v) writer_print_integer(w, k, v)
|
|
#define print_str(k, v) writer_print_string(w, k, v)
|
|
#define print_section_header(s) writer_print_section_header(w, s)
|
|
#define print_section_footer(s) writer_print_section_footer(w, s)
|
|
#define show_tags(metadata) writer_show_tags(w, metadata)
|
|
|
|
static void show_packet(WriterContext *w, AVFormatContext *fmt_ctx, AVPacket *pkt, int packet_idx)
|
|
{
|
|
char val_str[128];
|
|
AVStream *st = fmt_ctx->streams[pkt->stream_index];
|
|
struct print_buf pbuf = {.s = NULL};
|
|
|
|
print_section_header("PACKET");
|
|
print_str("codec_type", av_x_if_null(av_get_media_type_string(st->codec->codec_type), "unknown"));
|
|
print_int("stream_index", pkt->stream_index);
|
|
print_str("pts", ts_value_string (val_str, sizeof(val_str), pkt->pts));
|
|
print_str("pts_time", time_value_string(val_str, sizeof(val_str), pkt->pts, &st->time_base));
|
|
print_str("dts", ts_value_string (val_str, sizeof(val_str), pkt->dts));
|
|
print_str("dts_time", time_value_string(val_str, sizeof(val_str), pkt->dts, &st->time_base));
|
|
print_str("duration", ts_value_string (val_str, sizeof(val_str), pkt->duration));
|
|
print_str("duration_time", time_value_string(val_str, sizeof(val_str), pkt->duration, &st->time_base));
|
|
print_str("size", value_string (val_str, sizeof(val_str), pkt->size, unit_byte_str));
|
|
print_fmt("pos", "%"PRId64, pkt->pos);
|
|
print_fmt("flags", "%c", pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
|
|
print_section_footer("PACKET");
|
|
|
|
av_free(pbuf.s);
|
|
fflush(stdout);
|
|
}
|
|
|
|
static void show_packets(WriterContext *w, AVFormatContext *fmt_ctx)
|
|
{
|
|
AVPacket pkt;
|
|
int i = 0;
|
|
|
|
av_init_packet(&pkt);
|
|
|
|
while (!av_read_frame(fmt_ctx, &pkt))
|
|
show_packet(w, fmt_ctx, &pkt, i++);
|
|
}
|
|
|
|
static void show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx)
|
|
{
|
|
AVStream *stream = fmt_ctx->streams[stream_idx];
|
|
AVCodecContext *dec_ctx;
|
|
AVCodec *dec;
|
|
char val_str[128];
|
|
AVRational display_aspect_ratio;
|
|
struct print_buf pbuf = {.s = NULL};
|
|
|
|
print_section_header("STREAM");
|
|
|
|
print_int("index", stream->index);
|
|
|
|
if ((dec_ctx = stream->codec)) {
|
|
if ((dec = dec_ctx->codec)) {
|
|
print_str("codec_name", dec->name);
|
|
print_str("codec_long_name", dec->long_name);
|
|
} else {
|
|
print_str("codec_name", "unknown");
|
|
}
|
|
|
|
print_str("codec_type", av_x_if_null(av_get_media_type_string(dec_ctx->codec_type), "unknown"));
|
|
print_fmt("codec_time_base", "%d/%d", dec_ctx->time_base.num, dec_ctx->time_base.den);
|
|
|
|
/* print AVI/FourCC tag */
|
|
av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
|
|
print_str("codec_tag_string", val_str);
|
|
print_fmt("codec_tag", "0x%04x", dec_ctx->codec_tag);
|
|
|
|
switch (dec_ctx->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
print_int("width", dec_ctx->width);
|
|
print_int("height", dec_ctx->height);
|
|
print_int("has_b_frames", dec_ctx->has_b_frames);
|
|
if (dec_ctx->sample_aspect_ratio.num) {
|
|
print_fmt("sample_aspect_ratio", "%d:%d",
|
|
dec_ctx->sample_aspect_ratio.num,
|
|
dec_ctx->sample_aspect_ratio.den);
|
|
av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
|
|
dec_ctx->width * dec_ctx->sample_aspect_ratio.num,
|
|
dec_ctx->height * dec_ctx->sample_aspect_ratio.den,
|
|
1024*1024);
|
|
print_fmt("display_aspect_ratio", "%d:%d",
|
|
display_aspect_ratio.num,
|
|
display_aspect_ratio.den);
|
|
}
|
|
print_str("pix_fmt", av_x_if_null(av_get_pix_fmt_name(dec_ctx->pix_fmt), "unknown"));
|
|
print_int("level", dec_ctx->level);
|
|
break;
|
|
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
print_str("sample_rate", value_string(val_str, sizeof(val_str), dec_ctx->sample_rate, unit_hertz_str));
|
|
print_int("channels", dec_ctx->channels);
|
|
print_int("bits_per_sample", av_get_bits_per_sample(dec_ctx->codec_id));
|
|
break;
|
|
}
|
|
} else {
|
|
print_str("codec_type", "unknown");
|
|
}
|
|
|
|
if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
|
|
print_fmt("id", "0x%x", stream->id);
|
|
print_fmt("r_frame_rate", "%d/%d", stream->r_frame_rate.num, stream->r_frame_rate.den);
|
|
print_fmt("avg_frame_rate", "%d/%d", stream->avg_frame_rate.num, stream->avg_frame_rate.den);
|
|
print_fmt("time_base", "%d/%d", stream->time_base.num, stream->time_base.den);
|
|
print_str("start_time", time_value_string(val_str, sizeof(val_str), stream->start_time, &stream->time_base));
|
|
print_str("duration", time_value_string(val_str, sizeof(val_str), stream->duration, &stream->time_base));
|
|
if (stream->nb_frames)
|
|
print_fmt("nb_frames", "%"PRId64, stream->nb_frames);
|
|
|
|
show_tags(stream->metadata);
|
|
|
|
print_section_footer("STREAM");
|
|
av_free(pbuf.s);
|
|
fflush(stdout);
|
|
}
|
|
|
|
static void show_streams(WriterContext *w, AVFormatContext *fmt_ctx)
|
|
{
|
|
int i;
|
|
for (i = 0; i < fmt_ctx->nb_streams; i++)
|
|
show_stream(w, fmt_ctx, i);
|
|
}
|
|
|
|
static void show_format(WriterContext *w, AVFormatContext *fmt_ctx)
|
|
{
|
|
char val_str[128];
|
|
struct print_buf pbuf = {.s = NULL};
|
|
|
|
print_section_header("FORMAT");
|
|
print_str("filename", fmt_ctx->filename);
|
|
print_int("nb_streams", fmt_ctx->nb_streams);
|
|
print_str("format_name", fmt_ctx->iformat->name);
|
|
print_str("format_long_name", fmt_ctx->iformat->long_name);
|
|
print_str("start_time", time_value_string(val_str, sizeof(val_str), fmt_ctx->start_time, &AV_TIME_BASE_Q));
|
|
print_str("duration", time_value_string(val_str, sizeof(val_str), fmt_ctx->duration, &AV_TIME_BASE_Q));
|
|
print_str("size", value_string(val_str, sizeof(val_str), fmt_ctx->file_size, unit_byte_str));
|
|
print_str("bit_rate", value_string(val_str, sizeof(val_str), fmt_ctx->bit_rate, unit_bit_per_second_str));
|
|
show_tags(fmt_ctx->metadata);
|
|
print_section_footer("FORMAT");
|
|
av_free(pbuf.s);
|
|
fflush(stdout);
|
|
}
|
|
|
|
static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
|
|
{
|
|
int err, i;
|
|
AVFormatContext *fmt_ctx = NULL;
|
|
AVDictionaryEntry *t;
|
|
|
|
if ((err = avformat_open_input(&fmt_ctx, filename, iformat, &format_opts)) < 0) {
|
|
print_error(filename, err);
|
|
return err;
|
|
}
|
|
if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
|
|
av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
|
|
return AVERROR_OPTION_NOT_FOUND;
|
|
}
|
|
|
|
|
|
/* fill the streams in the format context */
|
|
if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
|
|
print_error(filename, err);
|
|
return err;
|
|
}
|
|
|
|
av_dump_format(fmt_ctx, 0, filename, 0);
|
|
|
|
/* bind a decoder to each input stream */
|
|
for (i = 0; i < fmt_ctx->nb_streams; i++) {
|
|
AVStream *stream = fmt_ctx->streams[i];
|
|
AVCodec *codec;
|
|
|
|
if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
|
|
fprintf(stderr, "Unsupported codec with id %d for input stream %d\n",
|
|
stream->codec->codec_id, stream->index);
|
|
} else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
|
|
fprintf(stderr, "Error while opening codec for input stream %d\n",
|
|
stream->index);
|
|
}
|
|
}
|
|
|
|
*fmt_ctx_ptr = fmt_ctx;
|
|
return 0;
|
|
}
|
|
|
|
#define PRINT_CHAPTER(name) do { \
|
|
if (do_show_ ## name) { \
|
|
writer_print_chapter_header(wctx, #name); \
|
|
show_ ## name (wctx, fmt_ctx); \
|
|
writer_print_chapter_footer(wctx, #name); \
|
|
} \
|
|
} while (0)
|
|
|
|
static int probe_file(const char *filename)
|
|
{
|
|
AVFormatContext *fmt_ctx;
|
|
int ret;
|
|
Writer *w;
|
|
const char *buf = print_format;
|
|
char *w_str = NULL, *w_args = NULL;
|
|
WriterContext *wctx;
|
|
|
|
writer_register_all();
|
|
|
|
if (buf) {
|
|
w_str = av_get_token(&buf, "=");
|
|
if (*buf == '=') {
|
|
buf++;
|
|
w_args = av_get_token(&buf, "");
|
|
}
|
|
}
|
|
|
|
if (!w_str)
|
|
w_str = av_strdup("default");
|
|
|
|
w = writer_get_by_name(w_str);
|
|
if (!w) {
|
|
av_log(NULL, AV_LOG_ERROR, "Invalid output format '%s'\n", w_str);
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
}
|
|
|
|
if ((ret = writer_open(&wctx, w, w_args, NULL)) < 0)
|
|
goto end;
|
|
if ((ret = open_input_file(&fmt_ctx, filename)))
|
|
goto end;
|
|
|
|
writer_print_header(wctx);
|
|
PRINT_CHAPTER(packets);
|
|
PRINT_CHAPTER(streams);
|
|
PRINT_CHAPTER(format);
|
|
writer_print_footer(wctx);
|
|
|
|
av_close_input_file(fmt_ctx);
|
|
writer_close(&wctx);
|
|
|
|
end:
|
|
av_free(w_str);
|
|
av_free(w_args);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void show_usage(void)
|
|
{
|
|
printf("Simple multimedia streams analyzer\n");
|
|
printf("usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
|
|
printf("\n");
|
|
}
|
|
|
|
static int opt_format(const char *opt, const char *arg)
|
|
{
|
|
iformat = av_find_input_format(arg);
|
|
if (!iformat) {
|
|
fprintf(stderr, "Unknown input format: %s\n", arg);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void opt_input_file(void *optctx, const char *arg)
|
|
{
|
|
if (input_filename) {
|
|
fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
|
|
arg, input_filename);
|
|
exit(1);
|
|
}
|
|
if (!strcmp(arg, "-"))
|
|
arg = "pipe:";
|
|
input_filename = arg;
|
|
}
|
|
|
|
static int opt_help(const char *opt, const char *arg)
|
|
{
|
|
const AVClass *class = avformat_get_class();
|
|
av_log_set_callback(log_callback_help);
|
|
show_usage();
|
|
show_help_options(options, "Main options:\n", 0, 0);
|
|
printf("\n");
|
|
av_opt_show2(&class, NULL,
|
|
AV_OPT_FLAG_DECODING_PARAM, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int opt_pretty(const char *opt, const char *arg)
|
|
{
|
|
show_value_unit = 1;
|
|
use_value_prefix = 1;
|
|
use_byte_value_binary_prefix = 1;
|
|
use_value_sexagesimal_format = 1;
|
|
return 0;
|
|
}
|
|
|
|
static const OptionDef options[] = {
|
|
#include "cmdutils_common_opts.h"
|
|
{ "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
|
|
{ "unit", OPT_BOOL, {(void*)&show_value_unit}, "show unit of the displayed values" },
|
|
{ "prefix", OPT_BOOL, {(void*)&use_value_prefix}, "use SI prefixes for the displayed values" },
|
|
{ "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
|
|
"use binary prefixes for byte units" },
|
|
{ "sexagesimal", OPT_BOOL, {(void*)&use_value_sexagesimal_format},
|
|
"use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
|
|
{ "pretty", 0, {(void*)&opt_pretty},
|
|
"prettify the format of displayed values, make it more human readable" },
|
|
{ "print_format", OPT_STRING | HAS_ARG, {(void*)&print_format}, "set the output printing format (available formats are: default, json)", "format" },
|
|
{ "show_format", OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
|
|
{ "show_packets", OPT_BOOL, {(void*)&do_show_packets}, "show packets info" },
|
|
{ "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
|
|
{ "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
|
|
{ "i", HAS_ARG, {(void *)opt_input_file}, "read specified file", "input_file"},
|
|
{ NULL, },
|
|
};
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int ret;
|
|
|
|
parse_loglevel(argc, argv, options);
|
|
av_register_all();
|
|
init_opts();
|
|
#if CONFIG_AVDEVICE
|
|
avdevice_register_all();
|
|
#endif
|
|
|
|
show_banner();
|
|
parse_options(NULL, argc, argv, options, opt_input_file);
|
|
|
|
if (!input_filename) {
|
|
show_usage();
|
|
fprintf(stderr, "You have to specify one input file.\n");
|
|
fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'.\n", program_name);
|
|
exit(1);
|
|
}
|
|
|
|
ret = probe_file(input_filename);
|
|
|
|
return ret;
|
|
}
|