WebSVN – Kolibri OS – Blame – /contrib/sdk/sources/ffmpeg/ffprobe.c

Rev	Author	Line No.	Line
4349	Serge	1	/*
		2	* Copyright (c) 2007-2010 Stefano Sabatini
		3	*
		4	* This file is part of FFmpeg.
		5	*
		6	* FFmpeg is free software; you can redistribute it and/or
		7	* modify it under the terms of the GNU Lesser General Public
		8	* License as published by the Free Software Foundation; either
		9	* version 2.1 of the License, or (at your option) any later version.
		10	*
		11	* FFmpeg is distributed in the hope that it will be useful,
		12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
		13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
		14	* Lesser General Public License for more details.
		15	*
		16	* You should have received a copy of the GNU Lesser General Public
		17	* License along with FFmpeg; if not, write to the Free Software
		18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
		19	*/
		20
		21	/**
		22	* @file
		23	* simple media prober based on the FFmpeg libraries
		24	*/
		25
		26	#include "config.h"
		27	#include "version.h"
		28
		29	#include
		30
		31	#include "libavformat/avformat.h"
		32	#include "libavcodec/avcodec.h"
		33	#include "libavutil/avassert.h"
		34	#include "libavutil/avstring.h"
		35	#include "libavutil/bprint.h"
		36	#include "libavutil/opt.h"
		37	#include "libavutil/pixdesc.h"
		38	#include "libavutil/dict.h"
		39	#include "libavutil/libm.h"
		40	#include "libavutil/parseutils.h"
		41	#include "libavutil/timecode.h"
		42	#include "libavutil/timestamp.h"
		43	#include "libavdevice/avdevice.h"
		44	#include "libswscale/swscale.h"
		45	#include "libswresample/swresample.h"
		46	#include "libpostproc/postprocess.h"
		47	#include "cmdutils.h"
		48
		49	const char program_name[] = "ffprobe";
		50	const int program_birth_year = 2007;
		51
		52	static int do_bitexact = 0;
		53	static int do_count_frames = 0;
		54	static int do_count_packets = 0;
		55	static int do_read_frames = 0;
		56	static int do_read_packets = 0;
		57	static int do_show_chapters = 0;
		58	static int do_show_error = 0;
		59	static int do_show_format = 0;
		60	static int do_show_frames = 0;
		61	static int do_show_packets = 0;
		62	static int do_show_programs = 0;
		63	static int do_show_streams = 0;
		64	static int do_show_stream_disposition = 0;
		65	static int do_show_data = 0;
		66	static int do_show_program_version = 0;
		67	static int do_show_library_versions = 0;
		68
		69	static int show_value_unit = 0;
		70	static int use_value_prefix = 0;
		71	static int use_byte_value_binary_prefix = 0;
		72	static int use_value_sexagesimal_format = 0;
		73	static int show_private_data = 1;
		74
		75	static char *print_format;
		76	static char *stream_specifier;
		77
		78	typedef struct {
		79	int id; ///< identifier
		80	int64_t start, end; ///< start, end in second/AV_TIME_BASE units
		81	int has_start, has_end;
		82	int start_is_offset, end_is_offset;
		83	int duration_frames;
		84	} ReadInterval;
		85
		86	static ReadInterval *read_intervals;
		87	static int read_intervals_nb = 0;
		88
		89	/* section structure definition */
		90
		91	#define SECTION_MAX_NB_CHILDREN 10
		92
		93	struct section {
		94	int id; ///< unique id identifying a section
		95	const char *name;
		96
		97	#define SECTION_FLAG_IS_WRAPPER 1 ///< the section only contains other sections, but has no data at its own level
		98	#define SECTION_FLAG_IS_ARRAY 2 ///< the section contains an array of elements of the same type
		99	#define SECTION_FLAG_HAS_VARIABLE_FIELDS 4 ///< the section may contain a variable number of fields with variable keys.
		100	/// For these sections the element_name field is mandatory.
		101	int flags;
		102	int children_ids[SECTION_MAX_NB_CHILDREN+1]; ///< list of children section IDS, terminated by -1
		103	const char *element_name; ///< name of the contained element, if provided
		104	const char *unique_name; ///< unique section name, in case the name is ambiguous
		105	AVDictionary *entries_to_show;
		106	int show_all_entries;
		107	};
		108
		109	typedef enum {
		110	SECTION_ID_NONE = -1,
		111	SECTION_ID_CHAPTER,
		112	SECTION_ID_CHAPTER_TAGS,
		113	SECTION_ID_CHAPTERS,
		114	SECTION_ID_ERROR,
		115	SECTION_ID_FORMAT,
		116	SECTION_ID_FORMAT_TAGS,
		117	SECTION_ID_FRAME,
		118	SECTION_ID_FRAMES,
		119	SECTION_ID_FRAME_TAGS,
		120	SECTION_ID_LIBRARY_VERSION,
		121	SECTION_ID_LIBRARY_VERSIONS,
		122	SECTION_ID_PACKET,
		123	SECTION_ID_PACKETS,
		124	SECTION_ID_PACKETS_AND_FRAMES,
		125	SECTION_ID_PROGRAM_STREAM_DISPOSITION,
		126	SECTION_ID_PROGRAM_STREAM_TAGS,
		127	SECTION_ID_PROGRAM,
		128	SECTION_ID_PROGRAM_STREAMS,
		129	SECTION_ID_PROGRAM_STREAM,
		130	SECTION_ID_PROGRAM_TAGS,
		131	SECTION_ID_PROGRAM_VERSION,
		132	SECTION_ID_PROGRAMS,
		133	SECTION_ID_ROOT,
		134	SECTION_ID_STREAM,
		135	SECTION_ID_STREAM_DISPOSITION,
		136	SECTION_ID_STREAMS,
		137	SECTION_ID_STREAM_TAGS,
		138	} SectionID;
		139
		140	static struct section sections[] = {
		141	[SECTION_ID_CHAPTERS] = { SECTION_ID_CHAPTERS, "chapters", SECTION_FLAG_IS_ARRAY, { SECTION_ID_CHAPTER, -1 } },
		142	[SECTION_ID_CHAPTER] = { SECTION_ID_CHAPTER, "chapter", 0, { SECTION_ID_CHAPTER_TAGS, -1 } },
		143	[SECTION_ID_CHAPTER_TAGS] = { SECTION_ID_CHAPTER_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "chapter_tags" },
		144	[SECTION_ID_ERROR] = { SECTION_ID_ERROR, "error", 0, { -1 } },
		145	[SECTION_ID_FORMAT] = { SECTION_ID_FORMAT, "format", 0, { SECTION_ID_FORMAT_TAGS, -1 } },
		146	[SECTION_ID_FORMAT_TAGS] = { SECTION_ID_FORMAT_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "format_tags" },
		147	[SECTION_ID_FRAMES] = { SECTION_ID_FRAMES, "frames", SECTION_FLAG_IS_ARRAY, { SECTION_ID_FRAME, -1 } },
		148	[SECTION_ID_FRAME] = { SECTION_ID_FRAME, "frame", 0, { SECTION_ID_FRAME_TAGS, -1 } },
		149	[SECTION_ID_FRAME_TAGS] = { SECTION_ID_FRAME_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "frame_tags" },
		150	[SECTION_ID_LIBRARY_VERSIONS] = { SECTION_ID_LIBRARY_VERSIONS, "library_versions", SECTION_FLAG_IS_ARRAY, { SECTION_ID_LIBRARY_VERSION, -1 } },
		151	[SECTION_ID_LIBRARY_VERSION] = { SECTION_ID_LIBRARY_VERSION, "library_version", 0, { -1 } },
		152	[SECTION_ID_PACKETS] = { SECTION_ID_PACKETS, "packets", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },
		153	[SECTION_ID_PACKETS_AND_FRAMES] = { SECTION_ID_PACKETS_AND_FRAMES, "packets_and_frames", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },
		154	[SECTION_ID_PACKET] = { SECTION_ID_PACKET, "packet", 0, { -1 } },
		155	[SECTION_ID_PROGRAM_STREAM_DISPOSITION] = { SECTION_ID_PROGRAM_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "program_stream_disposition" },
		156	[SECTION_ID_PROGRAM_STREAM_TAGS] = { SECTION_ID_PROGRAM_STREAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "program_stream_tags" },
		157	[SECTION_ID_PROGRAM] = { SECTION_ID_PROGRAM, "program", 0, { SECTION_ID_PROGRAM_TAGS, SECTION_ID_PROGRAM_STREAMS, -1 } },
		158	[SECTION_ID_PROGRAM_STREAMS] = { SECTION_ID_PROGRAM_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM_STREAM, -1 }, .unique_name = "program_streams" },
		159	[SECTION_ID_PROGRAM_STREAM] = { SECTION_ID_PROGRAM_STREAM, "stream", 0, { SECTION_ID_PROGRAM_STREAM_DISPOSITION, SECTION_ID_PROGRAM_STREAM_TAGS, -1 }, .unique_name = "program_stream" },
		160	[SECTION_ID_PROGRAM_TAGS] = { SECTION_ID_PROGRAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "program_tags" },
		161	[SECTION_ID_PROGRAM_VERSION] = { SECTION_ID_PROGRAM_VERSION, "program_version", 0, { -1 } },
		162	[SECTION_ID_PROGRAMS] = { SECTION_ID_PROGRAMS, "programs", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM, -1 } },
		163	[SECTION_ID_ROOT] = { SECTION_ID_ROOT, "root", SECTION_FLAG_IS_WRAPPER,
		164	{ SECTION_ID_CHAPTERS, SECTION_ID_FORMAT, SECTION_ID_FRAMES, SECTION_ID_PROGRAMS, SECTION_ID_STREAMS,
		165	SECTION_ID_PACKETS, SECTION_ID_ERROR, SECTION_ID_PROGRAM_VERSION, SECTION_ID_LIBRARY_VERSIONS, -1} },
		166	[SECTION_ID_STREAMS] = { SECTION_ID_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_STREAM, -1 } },
		167	[SECTION_ID_STREAM] = { SECTION_ID_STREAM, "stream", 0, { SECTION_ID_STREAM_DISPOSITION, SECTION_ID_STREAM_TAGS, -1 } },
		168	[SECTION_ID_STREAM_DISPOSITION] = { SECTION_ID_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "stream_disposition" },
		169	[SECTION_ID_STREAM_TAGS] = { SECTION_ID_STREAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "stream_tags" },
		170	};
		171
		172	static const OptionDef *options;
		173
		174	/* FFprobe context */
		175	static const char *input_filename;
		176	static AVInputFormat *iformat = NULL;
		177
		178	static const char *const binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
		179	static const char *const decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };
		180
		181	static const char unit_second_str[] = "s" ;
		182	static const char unit_hertz_str[] = "Hz" ;
		183	static const char unit_byte_str[] = "byte" ;
		184	static const char unit_bit_per_second_str[] = "bit/s";
		185
		186	static uint64_t *nb_streams_packets;
		187	static uint64_t *nb_streams_frames;
		188	static int *selected_streams;
		189
		190	static void ffprobe_cleanup(int ret)
		191	{
		192	int i;
		193	for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
		194	av_dict_free(&(sections[i].entries_to_show));
		195	}
		196
		197	struct unit_value {
		198	union { double d; long long int i; } val;
		199	const char *unit;
		200	};
		201
		202	static char value_string(char buf, int buf_size, struct unit_value uv)
		203	{
		204	double vald;
		205	long long int vali;
		206	int show_float = 0;
		207
		208	if (uv.unit == unit_second_str) {
		209	vald = uv.val.d;
		210	show_float = 1;
		211	} else {
		212	vald = vali = uv.val.i;
		213	}
		214
		215	if (uv.unit == unit_second_str && use_value_sexagesimal_format) {
		216	double secs;
		217	int hours, mins;
		218	secs = vald;
		219	mins = (int)secs / 60;
		220	secs = secs - mins * 60;
		221	hours = mins / 60;
		222	mins %= 60;
		223	snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
		224	} else {
		225	const char *prefix_string = "";
		226
		227	if (use_value_prefix && vald > 1) {
		228	long long int index;
		229
		230	if (uv.unit == unit_byte_str && use_byte_value_binary_prefix) {
		231	index = (long long int) (log2(vald)) / 10;
		232	index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) - 1);
		233	vald /= exp2(index * 10);
		234	prefix_string = binary_unit_prefixes[index];
		235	} else {
		236	index = (long long int) (log10(vald)) / 3;
		237	index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) - 1);
		238	vald /= pow(10, index * 3);
		239	prefix_string = decimal_unit_prefixes[index];
		240	}
		241	}
		242
		243	if (show_float \|\| (use_value_prefix && vald != (long long int)vald))
		244	snprintf(buf, buf_size, "%f", vald);
		245	else
		246	snprintf(buf, buf_size, "%lld", vali);
		247	av_strlcatf(buf, buf_size, "%s%s%s", *prefix_string \|\| show_value_unit ? " " : "",
		248	prefix_string, show_value_unit ? uv.unit : "");
		249	}
		250
		251	return buf;
		252	}
		253
		254	/* WRITERS API */
		255
		256	typedef struct WriterContext WriterContext;
		257
		258	#define WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS 1
		259	#define WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER 2
		260
		261	typedef struct Writer {
		262	const AVClass *priv_class; ///< private class of the writer, if any
		263	int priv_size; ///< private size for the writer context
		264	const char *name;
		265
		266	int (init) (WriterContext wctx);
		267	void (uninit)(WriterContext wctx);
		268
		269	void (print_section_header)(WriterContext wctx);
		270	void (print_section_footer)(WriterContext wctx);
		271	void (print_integer) (WriterContext wctx, const char *, long long int);
		272	void (print_rational) (WriterContext wctx, AVRational q, char sep);
		273	void (print_string) (WriterContext wctx, const char , const char );
		274	int flags; ///< a combination or WRITER_FLAG_*
		275	} Writer;
		276
		277	#define SECTION_MAX_NB_LEVELS 10
		278
		279	struct WriterContext {
		280	const AVClass *class; ///< class of the writer
		281	const Writer *writer; ///< the Writer of which this is an instance
		282	char *name; ///< name of this writer instance
		283	void *priv; ///< private data for use by the filter
		284
		285	const struct section *sections; ///< array containing all sections
		286	int nb_sections; ///< number of sections
		287
		288	int level; ///< current level, starting from 0
		289
		290	/** number of the item printed in the given section, starting from 0 */
		291	unsigned int nb_item[SECTION_MAX_NB_LEVELS];
		292
		293	/** section per each level */
		294	const struct section *section[SECTION_MAX_NB_LEVELS];
		295	AVBPrint section_pbuf[SECTION_MAX_NB_LEVELS]; ///< generic print buffer dedicated to each section,
		296	/// used by various writers
		297
		298	unsigned int nb_section_packet; ///< number of the packet section in case we are in "packets_and_frames" section
		299	unsigned int nb_section_frame; ///< number of the frame section in case we are in "packets_and_frames" section
		300	unsigned int nb_section_packet_frame; ///< nb_section_packet or nb_section_frame according if is_packets_and_frames
		301	};
		302
		303	static const char writer_get_name(void p)
		304	{
		305	WriterContext *wctx = p;
		306	return wctx->writer->name;
		307	}
		308
		309	static const AVClass writer_class = {
		310	"Writer",
		311	writer_get_name,
		312	NULL,
		313	LIBAVUTIL_VERSION_INT,
		314	};
		315
		316	static void writer_close(WriterContext **wctx)
		317	{
		318	int i;
		319
		320	if (!*wctx)
		321	return;
		322
		323	if ((*wctx)->writer->uninit)
		324	(wctx)->writer->uninit(wctx);
		325	for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
		326	av_bprint_finalize(&(*wctx)->section_pbuf[i], NULL);
		327	if ((*wctx)->writer->priv_class)
		328	av_opt_free((*wctx)->priv);
		329	av_freep(&((*wctx)->priv));
		330	av_freep(wctx);
		331	}
		332
		333	static int writer_open(WriterContext *wctx, const Writer writer, const char *args,
		334	const struct section *sections, int nb_sections)
		335	{
		336	int i, ret = 0;
		337
		338	if (!(*wctx = av_mallocz(sizeof(WriterContext)))) {
		339	ret = AVERROR(ENOMEM);
		340	goto fail;
		341	}
		342
		343	if (!((*wctx)->priv = av_mallocz(writer->priv_size))) {
		344	ret = AVERROR(ENOMEM);
		345	goto fail;
		346	}
		347
		348	(*wctx)->class = &writer_class;
		349	(*wctx)->writer = writer;
		350	(*wctx)->level = -1;
		351	(*wctx)->sections = sections;
		352	(*wctx)->nb_sections = nb_sections;
		353
		354	if (writer->priv_class) {
		355	void priv_ctx = (wctx)->priv;
		356	((const AVClass *)priv_ctx) = writer->priv_class;
		357	av_opt_set_defaults(priv_ctx);
		358
		359	if (args &&
		360	(ret = av_set_options_string(priv_ctx, args, "=", ":")) < 0)
		361	goto fail;
		362	}
		363
		364	for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
		365	av_bprint_init(&(*wctx)->section_pbuf[i], 1, AV_BPRINT_SIZE_UNLIMITED);
		366
		367	if ((*wctx)->writer->init)
		368	ret = (wctx)->writer->init(wctx);
		369	if (ret < 0)
		370	goto fail;
		371
		372	return 0;
		373
		374	fail:
		375	writer_close(wctx);
		376	return ret;
		377	}
		378
		379	static inline void writer_print_section_header(WriterContext *wctx,
		380	int section_id)
		381	{
		382	int parent_section_id;
		383	wctx->level++;
		384	av_assert0(wctx->level < SECTION_MAX_NB_LEVELS);
		385	parent_section_id = wctx->level ?
		386	(wctx->section[wctx->level-1])->id : SECTION_ID_NONE;
		387
		388	wctx->nb_item[wctx->level] = 0;
		389	wctx->section[wctx->level] = &wctx->sections[section_id];
		390
		391	if (section_id == SECTION_ID_PACKETS_AND_FRAMES) {
		392	wctx->nb_section_packet = wctx->nb_section_frame =
		393	wctx->nb_section_packet_frame = 0;
		394	} else if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {
		395	wctx->nb_section_packet_frame = section_id == SECTION_ID_PACKET ?
		396	wctx->nb_section_packet : wctx->nb_section_frame;
		397	}
		398
		399	if (wctx->writer->print_section_header)
		400	wctx->writer->print_section_header(wctx);
		401	}
		402
		403	static inline void writer_print_section_footer(WriterContext *wctx)
		404	{
		405	int section_id = wctx->section[wctx->level]->id;
		406	int parent_section_id = wctx->level ?
		407	wctx->section[wctx->level-1]->id : SECTION_ID_NONE;
		408
		409	if (parent_section_id != SECTION_ID_NONE)
		410	wctx->nb_item[wctx->level-1]++;
		411	if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {
		412	if (section_id == SECTION_ID_PACKET) wctx->nb_section_packet++;
		413	else wctx->nb_section_frame++;
		414	}
		415	if (wctx->writer->print_section_footer)
		416	wctx->writer->print_section_footer(wctx);
		417	wctx->level--;
		418	}
		419
		420	static inline void writer_print_integer(WriterContext *wctx,
		421	const char *key, long long int val)
		422	{
		423	const struct section *section = wctx->section[wctx->level];
		424
		425	if (section->show_all_entries \|\| av_dict_get(section->entries_to_show, key, NULL, 0)) {
		426	wctx->writer->print_integer(wctx, key, val);
		427	wctx->nb_item[wctx->level]++;
		428	}
		429	}
		430
		431	static inline void writer_print_string(WriterContext *wctx,
		432	const char key, const char val, int opt)
		433	{
		434	const struct section *section = wctx->section[wctx->level];
		435
		436	if (opt && !(wctx->writer->flags & WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS))
		437	return;
		438
		439	if (section->show_all_entries \|\| av_dict_get(section->entries_to_show, key, NULL, 0)) {
		440	wctx->writer->print_string(wctx, key, val);
		441	wctx->nb_item[wctx->level]++;
		442	}
		443	}
		444
		445	static inline void writer_print_rational(WriterContext *wctx,
		446	const char *key, AVRational q, char sep)
		447	{
		448	AVBPrint buf;
		449	av_bprint_init(&buf, 0, AV_BPRINT_SIZE_AUTOMATIC);
		450	av_bprintf(&buf, "%d%c%d", q.num, sep, q.den);
		451	writer_print_string(wctx, key, buf.str, 0);
		452	}
		453
		454	static void writer_print_time(WriterContext wctx, const char key,
		455	int64_t ts, const AVRational *time_base, int is_duration)
		456	{
		457	char buf[128];
		458
		459	if ((!is_duration && ts == AV_NOPTS_VALUE) \|\| (is_duration && ts == 0)) {
		460	writer_print_string(wctx, key, "N/A", 1);
		461	} else {
		462	double d = ts * av_q2d(*time_base);
		463	struct unit_value uv;
		464	uv.val.d = d;
		465	uv.unit = unit_second_str;
		466	value_string(buf, sizeof(buf), uv);
		467	writer_print_string(wctx, key, buf, 0);
		468	}
		469	}
		470
		471	static void writer_print_ts(WriterContext wctx, const char key, int64_t ts, int is_duration)
		472	{
		473	if ((!is_duration && ts == AV_NOPTS_VALUE) \|\| (is_duration && ts == 0)) {
		474	writer_print_string(wctx, key, "N/A", 1);
		475	} else {
		476	writer_print_integer(wctx, key, ts);
		477	}
		478	}
		479
		480	static void writer_print_data(WriterContext wctx, const char name,
		481	uint8_t *data, int size)
		482	{
		483	AVBPrint bp;
		484	int offset = 0, l, i;
		485
		486	av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
		487	av_bprintf(&bp, "\n");
		488	while (size) {
		489	av_bprintf(&bp, "%08x: ", offset);
		490	l = FFMIN(size, 16);
		491	for (i = 0; i < l; i++) {
		492	av_bprintf(&bp, "%02x", data[i]);
		493	if (i & 1)
		494	av_bprintf(&bp, " ");
		495	}
		496	av_bprint_chars(&bp, ' ', 41 - 2 * i - i / 2);
		497	for (i = 0; i < l; i++)
		498	av_bprint_chars(&bp, data[i] - 32U < 95 ? data[i] : '.', 1);
		499	av_bprintf(&bp, "\n");
		500	offset += l;
		501	data += l;
		502	size -= l;
		503	}
		504	writer_print_string(wctx, name, bp.str, 0);
		505	av_bprint_finalize(&bp, NULL);
		506	}
		507
		508	#define MAX_REGISTERED_WRITERS_NB 64
		509
		510	static const Writer *registered_writers[MAX_REGISTERED_WRITERS_NB + 1];
		511
		512	static int writer_register(const Writer *writer)
		513	{
		514	static int next_registered_writer_idx = 0;
		515
		516	if (next_registered_writer_idx == MAX_REGISTERED_WRITERS_NB)
		517	return AVERROR(ENOMEM);
		518
		519	registered_writers[next_registered_writer_idx++] = writer;
		520	return 0;
		521	}
		522
		523	static const Writer writer_get_by_name(const char name)
		524	{
		525	int i;
		526
		527	for (i = 0; registered_writers[i]; i++)
		528	if (!strcmp(registered_writers[i]->name, name))
		529	return registered_writers[i];
		530
		531	return NULL;
		532	}
		533
		534
		535	/* WRITERS */
		536
		537	#define DEFINE_WRITER_CLASS(name) \
		538	static const char name##_get_name(void ctx) \
		539	{ \
		540	return #name ; \
		541	} \
		542	static const AVClass name##_class = { \
		543	#name, \
		544	name##_get_name, \
		545	name##_options \
		546	}
		547
		548	/* Default output */
		549
		550	typedef struct DefaultContext {
		551	const AVClass *class;
		552	int nokey;
		553	int noprint_wrappers;
		554	int nested_section[SECTION_MAX_NB_LEVELS];
		555	} DefaultContext;
		556
		557	#define OFFSET(x) offsetof(DefaultContext, x)
		558
		559	static const AVOption default_options[] = {
		560	{ "noprint_wrappers", "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
		561	{ "nw", "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
		562	{ "nokey", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
		563	{ "nk", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
		564	{NULL},
		565	};
		566
		567	DEFINE_WRITER_CLASS(default);
		568
		569	/* lame uppercasing routine, assumes the string is lower case ASCII */
		570	static inline char upcase_string(char dst, size_t dst_size, const char *src)
		571	{
		572	int i;
		573	for (i = 0; src[i] && i < dst_size-1; i++)
		574	dst[i] = av_toupper(src[i]);
		575	dst[i] = 0;
		576	return dst;
		577	}
		578
		579	static void default_print_section_header(WriterContext *wctx)
		580	{
		581	DefaultContext *def = wctx->priv;
		582	char buf[32];
		583	const struct section *section = wctx->section[wctx->level];
		584	const struct section *parent_section = wctx->level ?
		585	wctx->section[wctx->level-1] : NULL;
		586
		587	av_bprint_clear(&wctx->section_pbuf[wctx->level]);
		588	if (parent_section &&
		589	!(parent_section->flags & (SECTION_FLAG_IS_WRAPPER\|SECTION_FLAG_IS_ARRAY))) {
		590	def->nested_section[wctx->level] = 1;
		591	av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
		592	wctx->section_pbuf[wctx->level-1].str,
		593	upcase_string(buf, sizeof(buf),
		594	av_x_if_null(section->element_name, section->name)));
		595	}
		596
		597	if (def->noprint_wrappers \|\| def->nested_section[wctx->level])
		598	return;
		599
		600	if (!(section->flags & (SECTION_FLAG_IS_WRAPPER\|SECTION_FLAG_IS_ARRAY)))
		601	printf("[%s]\n", upcase_string(buf, sizeof(buf), section->name));
		602	}
		603
		604	static void default_print_section_footer(WriterContext *wctx)
		605	{
		606	DefaultContext *def = wctx->priv;
		607	const struct section *section = wctx->section[wctx->level];
		608	char buf[32];
		609
		610	if (def->noprint_wrappers \|\| def->nested_section[wctx->level])
		611	return;
		612
		613	if (!(section->flags & (SECTION_FLAG_IS_WRAPPER\|SECTION_FLAG_IS_ARRAY)))
		614	printf("[/%s]\n", upcase_string(buf, sizeof(buf), section->name));
		615	}
		616
		617	static void default_print_str(WriterContext wctx, const char key, const char *value)
		618	{
		619	DefaultContext *def = wctx->priv;
		620
		621	if (!def->nokey)
		622	printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
		623	printf("%s\n", value);
		624	}
		625
		626	static void default_print_int(WriterContext wctx, const char key, long long int value)
		627	{
		628	DefaultContext *def = wctx->priv;
		629
		630	if (!def->nokey)
		631	printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
		632	printf("%lld\n", value);
		633	}
		634
		635	static const Writer default_writer = {
		636	.name = "default",
		637	.priv_size = sizeof(DefaultContext),
		638	.print_section_header = default_print_section_header,
		639	.print_section_footer = default_print_section_footer,
		640	.print_integer = default_print_int,
		641	.print_string = default_print_str,
		642	.flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
		643	.priv_class = &default_class,
		644	};
		645
		646	/* Compact output */
		647
		648	/**
		649	* Apply C-language-like string escaping.
		650	*/
		651	static const char c_escape_str(AVBPrint dst, const char src, const char sep, void log_ctx)
		652	{
		653	const char *p;
		654
		655	for (p = src; *p; p++) {
		656	switch (*p) {
		657	case '\b': av_bprintf(dst, "%s", "\\b"); break;
		658	case '\f': av_bprintf(dst, "%s", "\\f"); break;
		659	case '\n': av_bprintf(dst, "%s", "\\n"); break;
		660	case '\r': av_bprintf(dst, "%s", "\\r"); break;
		661	case '\\': av_bprintf(dst, "%s", "\\\\"); break;
		662	default:
		663	if (*p == sep)
		664	av_bprint_chars(dst, '\\', 1);
		665	av_bprint_chars(dst, *p, 1);
		666	}
		667	}
		668	return dst->str;
		669	}
		670
		671	/**
		672	* Quote fields containing special characters, check RFC4180.
		673	*/
		674	static const char csv_escape_str(AVBPrint dst, const char src, const char sep, void log_ctx)
		675	{
		676	char meta_chars[] = { sep, '"', '\n', '\r', '\0' };
		677	int needs_quoting = !!src[strcspn(src, meta_chars)];
		678
		679	if (needs_quoting)
		680	av_bprint_chars(dst, '"', 1);
		681
		682	for (; *src; src++) {
		683	if (*src == '"')
		684	av_bprint_chars(dst, '"', 1);
		685	av_bprint_chars(dst, *src, 1);
		686	}
		687	if (needs_quoting)
		688	av_bprint_chars(dst, '"', 1);
		689	return dst->str;
		690	}
		691
		692	static const char none_escape_str(AVBPrint dst, const char src, const char sep, void log_ctx)
		693	{
		694	return src;
		695	}
		696
		697	typedef struct CompactContext {
		698	const AVClass *class;
		699	char *item_sep_str;
		700	char item_sep;
		701	int nokey;
		702	int print_section;
		703	char *escape_mode_str;
		704	const char * (escape_str)(AVBPrint dst, const char src, const char sep, void log_ctx);
		705	int nested_section[SECTION_MAX_NB_LEVELS];
		706	int has_nested_elems[SECTION_MAX_NB_LEVELS];
		707	int terminate_line[SECTION_MAX_NB_LEVELS];
		708	} CompactContext;
		709
		710	#undef OFFSET
		711	#define OFFSET(x) offsetof(CompactContext, x)
		712
		713	static const AVOption compact_options[]= {
		714	{"item_sep", "set item separator", OFFSET(item_sep_str), AV_OPT_TYPE_STRING, {.str="\|"}, CHAR_MIN, CHAR_MAX },
		715	{"s", "set item separator", OFFSET(item_sep_str), AV_OPT_TYPE_STRING, {.str="\|"}, CHAR_MIN, CHAR_MAX },
		716	{"nokey", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
		717	{"nk", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
		718	{"escape", "set escape mode", OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"}, CHAR_MIN, CHAR_MAX },
		719	{"e", "set escape mode", OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"}, CHAR_MIN, CHAR_MAX },
		720	{"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
		721	{"p", "print section name", OFFSET(print_section), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
		722	{NULL},
		723	};
		724
		725	DEFINE_WRITER_CLASS(compact);
		726
		727	static av_cold int compact_init(WriterContext *wctx)
		728	{
		729	CompactContext *compact = wctx->priv;
		730
		731	if (strlen(compact->item_sep_str) != 1) {
		732	av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
		733	compact->item_sep_str);
		734	return AVERROR(EINVAL);
		735	}
		736	compact->item_sep = compact->item_sep_str[0];
		737
		738	if (!strcmp(compact->escape_mode_str, "none")) compact->escape_str = none_escape_str;
		739	else if (!strcmp(compact->escape_mode_str, "c" )) compact->escape_str = c_escape_str;
		740	else if (!strcmp(compact->escape_mode_str, "csv" )) compact->escape_str = csv_escape_str;
		741	else {
		742	av_log(wctx, AV_LOG_ERROR, "Unknown escape mode '%s'\n", compact->escape_mode_str);
		743	return AVERROR(EINVAL);
		744	}
		745
		746	return 0;
		747	}
		748
		749	static void compact_print_section_header(WriterContext *wctx)
		750	{
		751	CompactContext *compact = wctx->priv;
		752	const struct section *section = wctx->section[wctx->level];
		753	const struct section *parent_section = wctx->level ?
		754	wctx->section[wctx->level-1] : NULL;
		755	compact->terminate_line[wctx->level] = 1;
		756	compact->has_nested_elems[wctx->level] = 0;
		757
		758	av_bprint_clear(&wctx->section_pbuf[wctx->level]);
		759	if (!(section->flags & SECTION_FLAG_IS_ARRAY) && parent_section &&
		760	!(parent_section->flags & (SECTION_FLAG_IS_WRAPPER\|SECTION_FLAG_IS_ARRAY))) {
		761	compact->nested_section[wctx->level] = 1;
		762	compact->has_nested_elems[wctx->level-1] = 1;
		763	av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
		764	wctx->section_pbuf[wctx->level-1].str,
		765	(char *)av_x_if_null(section->element_name, section->name));
		766	wctx->nb_item[wctx->level] = wctx->nb_item[wctx->level-1];
		767	} else {
		768	if (parent_section && compact->has_nested_elems[wctx->level-1] &&
		769	(section->flags & SECTION_FLAG_IS_ARRAY)) {
		770	compact->terminate_line[wctx->level-1] = 0;
		771	printf("\n");
		772	}
		773	if (compact->print_section &&
		774	!(section->flags & (SECTION_FLAG_IS_WRAPPER\|SECTION_FLAG_IS_ARRAY)))
		775	printf("%s%c", section->name, compact->item_sep);
		776	}
		777	}
		778
		779	static void compact_print_section_footer(WriterContext *wctx)
		780	{
		781	CompactContext *compact = wctx->priv;
		782
		783	if (!compact->nested_section[wctx->level] &&
		784	compact->terminate_line[wctx->level] &&
		785	!(wctx->section[wctx->level]->flags & (SECTION_FLAG_IS_WRAPPER\|SECTION_FLAG_IS_ARRAY)))
		786	printf("\n");
		787	}
		788
		789	static void compact_print_str(WriterContext wctx, const char key, const char *value)
		790	{
		791	CompactContext *compact = wctx->priv;
		792	AVBPrint buf;
		793
		794	if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
		795	if (!compact->nokey)
		796	printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
		797	av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
		798	printf("%s", compact->escape_str(&buf, value, compact->item_sep, wctx));
		799	av_bprint_finalize(&buf, NULL);
		800	}
		801
		802	static void compact_print_int(WriterContext wctx, const char key, long long int value)
		803	{
		804	CompactContext *compact = wctx->priv;
		805
		806	if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
		807	if (!compact->nokey)
		808	printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
		809	printf("%lld", value);
		810	}
		811
		812	static const Writer compact_writer = {
		813	.name = "compact",
		814	.priv_size = sizeof(CompactContext),
		815	.init = compact_init,
		816	.print_section_header = compact_print_section_header,
		817	.print_section_footer = compact_print_section_footer,
		818	.print_integer = compact_print_int,
		819	.print_string = compact_print_str,
		820	.flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
		821	.priv_class = &compact_class,
		822	};
		823
		824	/* CSV output */
		825
		826	#undef OFFSET
		827	#define OFFSET(x) offsetof(CompactContext, x)
		828
		829	static const AVOption csv_options[] = {
		830	{"item_sep", "set item separator", OFFSET(item_sep_str), AV_OPT_TYPE_STRING, {.str=","}, CHAR_MIN, CHAR_MAX },
		831	{"s", "set item separator", OFFSET(item_sep_str), AV_OPT_TYPE_STRING, {.str=","}, CHAR_MIN, CHAR_MAX },
		832	{"nokey", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
		833	{"nk", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
		834	{"escape", "set escape mode", OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },
		835	{"e", "set escape mode", OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },
		836	{"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
		837	{"p", "print section name", OFFSET(print_section), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
		838	{NULL},
		839	};
		840
		841	DEFINE_WRITER_CLASS(csv);
		842
		843	static const Writer csv_writer = {
		844	.name = "csv",
		845	.priv_size = sizeof(CompactContext),
		846	.init = compact_init,
		847	.print_section_header = compact_print_section_header,
		848	.print_section_footer = compact_print_section_footer,
		849	.print_integer = compact_print_int,
		850	.print_string = compact_print_str,
		851	.flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
		852	.priv_class = &csv_class,
		853	};
		854
		855	/* Flat output */
		856
		857	typedef struct FlatContext {
		858	const AVClass *class;
		859	const char *sep_str;
		860	char sep;
		861	int hierarchical;
		862	} FlatContext;
		863
		864	#undef OFFSET
		865	#define OFFSET(x) offsetof(FlatContext, x)
		866
		867	static const AVOption flat_options[]= {
		868	{"sep_char", "set separator", OFFSET(sep_str), AV_OPT_TYPE_STRING, {.str="."}, CHAR_MIN, CHAR_MAX },
		869	{"s", "set separator", OFFSET(sep_str), AV_OPT_TYPE_STRING, {.str="."}, CHAR_MIN, CHAR_MAX },
		870	{"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
		871	{"h", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
		872	{NULL},
		873	};
		874
		875	DEFINE_WRITER_CLASS(flat);
		876
		877	static av_cold int flat_init(WriterContext *wctx)
		878	{
		879	FlatContext *flat = wctx->priv;
		880
		881	if (strlen(flat->sep_str) != 1) {
		882	av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
		883	flat->sep_str);
		884	return AVERROR(EINVAL);
		885	}
		886	flat->sep = flat->sep_str[0];
		887
		888	return 0;
		889	}
		890
		891	static const char flat_escape_key_str(AVBPrint dst, const char *src, const char sep)
		892	{
		893	const char *p;
		894
		895	for (p = src; *p; p++) {
		896	if (!((p >= '0' && p <= '9') \|\|
		897	(p >= 'a' && p <= 'z') \|\|
		898	(p >= 'A' && p <= 'Z')))
		899	av_bprint_chars(dst, '_', 1);
		900	else
		901	av_bprint_chars(dst, *p, 1);
		902	}
		903	return dst->str;
		904	}
		905
		906	static const char flat_escape_value_str(AVBPrint dst, const char *src)
		907	{
		908	const char *p;
		909
		910	for (p = src; *p; p++) {
		911	switch (*p) {
		912	case '\n': av_bprintf(dst, "%s", "\\n"); break;
		913	case '\r': av_bprintf(dst, "%s", "\\r"); break;
		914	case '\\': av_bprintf(dst, "%s", "\\\\"); break;
		915	case '"': av_bprintf(dst, "%s", "\\\""); break;
		916	case '`': av_bprintf(dst, "%s", "\\`"); break;
		917	case '$': av_bprintf(dst, "%s", "\\$"); break;
		918	default: av_bprint_chars(dst, *p, 1); break;
		919	}
		920	}
		921	return dst->str;
		922	}
		923
		924	static void flat_print_section_header(WriterContext *wctx)
		925	{
		926	FlatContext *flat = wctx->priv;
		927	AVBPrint *buf = &wctx->section_pbuf[wctx->level];
		928	const struct section *section = wctx->section[wctx->level];
		929	const struct section *parent_section = wctx->level ?
		930	wctx->section[wctx->level-1] : NULL;
		931
		932	/* build section header */
		933	av_bprint_clear(buf);
		934	if (!parent_section)
		935	return;
		936	av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
		937
		938	if (flat->hierarchical \|\|
		939	!(section->flags & (SECTION_FLAG_IS_ARRAY\|SECTION_FLAG_IS_WRAPPER))) {
		940	av_bprintf(buf, "%s%s", wctx->section[wctx->level]->name, flat->sep_str);
		941
		942	if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {
		943	int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?
		944	wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];
		945	av_bprintf(buf, "%d%s", n, flat->sep_str);
		946	}
		947	}
		948	}
		949
		950	static void flat_print_int(WriterContext wctx, const char key, long long int value)
		951	{
		952	printf("%s%s=%lld\n", wctx->section_pbuf[wctx->level].str, key, value);
		953	}
		954
		955	static void flat_print_str(WriterContext wctx, const char key, const char *value)
		956	{
		957	FlatContext *flat = wctx->priv;
		958	AVBPrint buf;
		959
		960	printf("%s", wctx->section_pbuf[wctx->level].str);
		961	av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
		962	printf("%s=", flat_escape_key_str(&buf, key, flat->sep));
		963	av_bprint_clear(&buf);
		964	printf("\"%s\"\n", flat_escape_value_str(&buf, value));
		965	av_bprint_finalize(&buf, NULL);
		966	}
		967
		968	static const Writer flat_writer = {
		969	.name = "flat",
		970	.priv_size = sizeof(FlatContext),
		971	.init = flat_init,
		972	.print_section_header = flat_print_section_header,
		973	.print_integer = flat_print_int,
		974	.print_string = flat_print_str,
		975	.flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS\|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
		976	.priv_class = &flat_class,
		977	};
		978
		979	/* INI format output */
		980
		981	typedef struct {
		982	const AVClass *class;
		983	int hierarchical;
		984	} INIContext;
		985
		986	#undef OFFSET
		987	#define OFFSET(x) offsetof(INIContext, x)
		988
		989	static const AVOption ini_options[] = {
		990	{"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
		991	{"h", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
		992	{NULL},
		993	};
		994
		995	DEFINE_WRITER_CLASS(ini);
		996
		997	static char ini_escape_str(AVBPrint dst, const char *src)
		998	{
		999	int i = 0;
		1000	char c = 0;
		1001
		1002	while (c = src[i++]) {
		1003	switch (c) {
		1004	case '\b': av_bprintf(dst, "%s", "\\b"); break;
		1005	case '\f': av_bprintf(dst, "%s", "\\f"); break;
		1006	case '\n': av_bprintf(dst, "%s", "\\n"); break;
		1007	case '\r': av_bprintf(dst, "%s", "\\r"); break;
		1008	case '\t': av_bprintf(dst, "%s", "\\t"); break;
		1009	case '\\':
		1010	case '#' :
		1011	case '=' :
		1012	case ':' : av_bprint_chars(dst, '\\', 1);
		1013	default:
		1014	if ((unsigned char)c < 32)
		1015	av_bprintf(dst, "\\x00%02x", c & 0xff);
		1016	else
		1017	av_bprint_chars(dst, c, 1);
		1018	break;
		1019	}
		1020	}
		1021	return dst->str;
		1022	}
		1023
		1024	static void ini_print_section_header(WriterContext *wctx)
		1025	{
		1026	INIContext *ini = wctx->priv;
		1027	AVBPrint *buf = &wctx->section_pbuf[wctx->level];
		1028	const struct section *section = wctx->section[wctx->level];
		1029	const struct section *parent_section = wctx->level ?
		1030	wctx->section[wctx->level-1] : NULL;
		1031
		1032	av_bprint_clear(buf);
		1033	if (!parent_section) {
		1034	printf("# ffprobe output\n\n");
		1035	return;
		1036	}
		1037
		1038	if (wctx->nb_item[wctx->level-1])
		1039	printf("\n");
		1040
		1041	av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
		1042	if (ini->hierarchical \|\|
		1043	!(section->flags & (SECTION_FLAG_IS_ARRAY\|SECTION_FLAG_IS_WRAPPER))) {
		1044	av_bprintf(buf, "%s%s", buf->str[0] ? "." : "", wctx->section[wctx->level]->name);
		1045
		1046	if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {
		1047	int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?
		1048	wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];
		1049	av_bprintf(buf, ".%d", n);
		1050	}
		1051	}
		1052
		1053	if (!(section->flags & (SECTION_FLAG_IS_ARRAY\|SECTION_FLAG_IS_WRAPPER)))
		1054	printf("[%s]\n", buf->str);
		1055	}
		1056
		1057	static void ini_print_str(WriterContext wctx, const char key, const char *value)
		1058	{
		1059	AVBPrint buf;
		1060
		1061	av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
		1062	printf("%s=", ini_escape_str(&buf, key));
		1063	av_bprint_clear(&buf);
		1064	printf("%s\n", ini_escape_str(&buf, value));
		1065	av_bprint_finalize(&buf, NULL);
		1066	}
		1067
		1068	static void ini_print_int(WriterContext wctx, const char key, long long int value)
		1069	{
		1070	printf("%s=%lld\n", key, value);
		1071	}
		1072
		1073	static const Writer ini_writer = {
		1074	.name = "ini",
		1075	.priv_size = sizeof(INIContext),
		1076	.print_section_header = ini_print_section_header,
		1077	.print_integer = ini_print_int,
		1078	.print_string = ini_print_str,
		1079	.flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS\|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
		1080	.priv_class = &ini_class,
		1081	};
		1082
		1083	/* JSON output */
		1084
		1085	typedef struct {
		1086	const AVClass *class;
		1087	int indent_level;
		1088	int compact;
		1089	const char item_sep, item_start_end;
		1090	} JSONContext;
		1091
		1092	#undef OFFSET
		1093	#define OFFSET(x) offsetof(JSONContext, x)
		1094
		1095	static const AVOption json_options[]= {
		1096	{ "compact", "enable compact output", OFFSET(compact), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
		1097	{ "c", "enable compact output", OFFSET(compact), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
		1098	{ NULL }
		1099	};
		1100
		1101	DEFINE_WRITER_CLASS(json);
		1102
		1103	static av_cold int json_init(WriterContext *wctx)
		1104	{
		1105	JSONContext *json = wctx->priv;
		1106
		1107	json->item_sep = json->compact ? ", " : ",\n";
		1108	json->item_start_end = json->compact ? " " : "\n";
		1109
		1110	return 0;
		1111	}
		1112
		1113	static const char json_escape_str(AVBPrint dst, const char src, void log_ctx)
		1114	{
		1115	static const char json_escape[] = {'"', '\\', '\b', '\f', '\n', '\r', '\t', 0};
		1116	static const char json_subst[] = {'"', '\\', 'b', 'f', 'n', 'r', 't', 0};
		1117	const char *p;
		1118
		1119	for (p = src; *p; p++) {
		1120	char s = strchr(json_escape, p);
		1121	if (s) {
		1122	av_bprint_chars(dst, '\\', 1);
		1123	av_bprint_chars(dst, json_subst[s - json_escape], 1);
		1124	} else if ((unsigned char)*p < 32) {
		1125	av_bprintf(dst, "\\u00%02x", *p & 0xff);
		1126	} else {
		1127	av_bprint_chars(dst, *p, 1);
		1128	}
		1129	}
		1130	return dst->str;
		1131	}
		1132
		1133	#define JSON_INDENT() printf("%c", json->indent_level 4, ' ')
		1134
		1135	static void json_print_section_header(WriterContext *wctx)
		1136	{
		1137	JSONContext *json = wctx->priv;
		1138	AVBPrint buf;
		1139	const struct section *section = wctx->section[wctx->level];
		1140	const struct section *parent_section = wctx->level ?
		1141	wctx->section[wctx->level-1] : NULL;
		1142
		1143	if (wctx->level && wctx->nb_item[wctx->level-1])
		1144	printf(",\n");
		1145
		1146	if (section->flags & SECTION_FLAG_IS_WRAPPER) {
		1147	printf("{\n");
		1148	json->indent_level++;
		1149	} else {
		1150	av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
		1151	json_escape_str(&buf, section->name, wctx);
		1152	JSON_INDENT();
		1153
		1154	json->indent_level++;
		1155	if (section->flags & SECTION_FLAG_IS_ARRAY) {
		1156	printf("\"%s\": [\n", buf.str);
		1157	} else if (parent_section && !(parent_section->flags & SECTION_FLAG_IS_ARRAY)) {
		1158	printf("\"%s\": {%s", buf.str, json->item_start_end);
		1159	} else {
		1160	printf("{%s", json->item_start_end);
		1161
		1162	/* this is required so the parser can distinguish between packets and frames */
		1163	if (parent_section && parent_section->id == SECTION_ID_PACKETS_AND_FRAMES) {
		1164	if (!json->compact)
		1165	JSON_INDENT();
		1166	printf("\"type\": \"%s\"%s", section->name, json->item_sep);
		1167	}
		1168	}
		1169	av_bprint_finalize(&buf, NULL);
		1170	}
		1171	}
		1172
		1173	static void json_print_section_footer(WriterContext *wctx)
		1174	{
		1175	JSONContext *json = wctx->priv;
		1176	const struct section *section = wctx->section[wctx->level];
		1177
		1178	if (wctx->level == 0) {
		1179	json->indent_level--;
		1180	printf("\n}\n");
		1181	} else if (section->flags & SECTION_FLAG_IS_ARRAY) {
		1182	printf("\n");
		1183	json->indent_level--;
		1184	JSON_INDENT();
		1185	printf("]");
		1186	} else {
		1187	printf("%s", json->item_start_end);
		1188	json->indent_level--;
		1189	if (!json->compact)
		1190	JSON_INDENT();
		1191	printf("}");
		1192	}
		1193	}
		1194
		1195	static inline void json_print_item_str(WriterContext *wctx,
		1196	const char key, const char value)
		1197	{
		1198	AVBPrint buf;
		1199
		1200	av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
		1201	printf("\"%s\":", json_escape_str(&buf, key, wctx));
		1202	av_bprint_clear(&buf);
		1203	printf(" \"%s\"", json_escape_str(&buf, value, wctx));
		1204	av_bprint_finalize(&buf, NULL);
		1205	}
		1206
		1207	static void json_print_str(WriterContext wctx, const char key, const char *value)
		1208	{
		1209	JSONContext *json = wctx->priv;
		1210
		1211	if (wctx->nb_item[wctx->level])
		1212	printf("%s", json->item_sep);
		1213	if (!json->compact)
		1214	JSON_INDENT();
		1215	json_print_item_str(wctx, key, value);
		1216	}
		1217
		1218	static void json_print_int(WriterContext wctx, const char key, long long int value)
		1219	{
		1220	JSONContext *json = wctx->priv;
		1221	AVBPrint buf;
		1222
		1223	if (wctx->nb_item[wctx->level])
		1224	printf("%s", json->item_sep);
		1225	if (!json->compact)
		1226	JSON_INDENT();
		1227
		1228	av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
		1229	printf("\"%s\": %lld", json_escape_str(&buf, key, wctx), value);
		1230	av_bprint_finalize(&buf, NULL);
		1231	}
		1232
		1233	static const Writer json_writer = {
		1234	.name = "json",
		1235	.priv_size = sizeof(JSONContext),
		1236	.init = json_init,
		1237	.print_section_header = json_print_section_header,
		1238	.print_section_footer = json_print_section_footer,
		1239	.print_integer = json_print_int,
		1240	.print_string = json_print_str,
		1241	.flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
		1242	.priv_class = &json_class,
		1243	};
		1244
		1245	/* XML output */
		1246
		1247	typedef struct {
		1248	const AVClass *class;
		1249	int within_tag;
		1250	int indent_level;
		1251	int fully_qualified;
		1252	int xsd_strict;
		1253	} XMLContext;
		1254
		1255	#undef OFFSET
		1256	#define OFFSET(x) offsetof(XMLContext, x)
		1257
		1258	static const AVOption xml_options[] = {
		1259	{"fully_qualified", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
		1260	{"q", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
		1261	{"xsd_strict", "ensure that the output is XSD compliant", OFFSET(xsd_strict), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
		1262	{"x", "ensure that the output is XSD compliant", OFFSET(xsd_strict), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
		1263	{NULL},
		1264	};
		1265
		1266	DEFINE_WRITER_CLASS(xml);
		1267
		1268	static av_cold int xml_init(WriterContext *wctx)
		1269	{
		1270	XMLContext *xml = wctx->priv;
		1271
		1272	if (xml->xsd_strict) {
		1273	xml->fully_qualified = 1;
		1274	#define CHECK_COMPLIANCE(opt, opt_name) \
		1275	if (opt) { \
		1276	av_log(wctx, AV_LOG_ERROR, \
		1277	"XSD-compliant output selected but option '%s' was selected, XML output may be non-compliant.\n" \
		1278	"You need to disable such option with '-no%s'\n", opt_name, opt_name); \
		1279	return AVERROR(EINVAL); \
		1280	}
		1281	CHECK_COMPLIANCE(show_private_data, "private");
		1282	CHECK_COMPLIANCE(show_value_unit, "unit");
		1283	CHECK_COMPLIANCE(use_value_prefix, "prefix");
		1284
		1285	if (do_show_frames && do_show_packets) {
		1286	av_log(wctx, AV_LOG_ERROR,
		1287	"Interleaved frames and packets are not allowed in XSD. "
		1288	"Select only one between the -show_frames and the -show_packets options.\n");
		1289	return AVERROR(EINVAL);
		1290	}
		1291	}
		1292
		1293	return 0;
		1294	}
		1295
		1296	static const char xml_escape_str(AVBPrint dst, const char src, void log_ctx)
		1297	{
		1298	const char *p;
		1299
		1300	for (p = src; *p; p++) {
		1301	switch (*p) {
		1302	case '&' : av_bprintf(dst, "%s", "&"); break;
		1303	case '<' : av_bprintf(dst, "%s", "<"); break;
		1304	case '>' : av_bprintf(dst, "%s", ">"); break;
		1305	case '"' : av_bprintf(dst, "%s", """); break;
		1306	case '\'': av_bprintf(dst, "%s", "'"); break;
		1307	default: av_bprint_chars(dst, *p, 1);
		1308	}
		1309	}
		1310
		1311	return dst->str;
		1312	}
		1313
		1314	#define XML_INDENT() printf("%c", xml->indent_level 4, ' ')
		1315
		1316	static void xml_print_section_header(WriterContext *wctx)
		1317	{
		1318	XMLContext *xml = wctx->priv;
		1319	const struct section *section = wctx->section[wctx->level];
		1320	const struct section *parent_section = wctx->level ?
		1321	wctx->section[wctx->level-1] : NULL;
		1322
		1323	if (wctx->level == 0) {
		1324	const char *qual = " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' "
		1325	"xmlns:ffprobe='http://www.ffmpeg.org/schema/ffprobe' "
		1326	"xsi:schemaLocation='http://www.ffmpeg.org/schema/ffprobe ffprobe.xsd'";
		1327
		1328	printf("\n");
		1329	printf("<%sffprobe%s>\n",
		1330	xml->fully_qualified ? "ffprobe:" : "",
		1331	xml->fully_qualified ? qual : "");
		1332	return;
		1333	}
		1334
		1335	if (xml->within_tag) {
		1336	xml->within_tag = 0;
		1337	printf(">\n");
		1338	}
		1339	if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
		1340	xml->indent_level++;
		1341	} else {
		1342	if (parent_section && (parent_section->flags & SECTION_FLAG_IS_WRAPPER) &&
		1343	wctx->level && wctx->nb_item[wctx->level-1])
		1344	printf("\n");
		1345	xml->indent_level++;
		1346
		1347	if (section->flags & SECTION_FLAG_IS_ARRAY) {
		1348	XML_INDENT(); printf("<%s>\n", section->name);
		1349	} else {
		1350	XML_INDENT(); printf("<%s ", section->name);
		1351	xml->within_tag = 1;
		1352	}
		1353	}
		1354	}
		1355
		1356	static void xml_print_section_footer(WriterContext *wctx)
		1357	{
		1358	XMLContext *xml = wctx->priv;
		1359	const struct section *section = wctx->section[wctx->level];
		1360
		1361	if (wctx->level == 0) {
		1362	printf("\n", xml->fully_qualified ? "ffprobe:" : "");
		1363	} else if (xml->within_tag) {
		1364	xml->within_tag = 0;
		1365	printf("/>\n");
		1366	xml->indent_level--;
		1367	} else if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
		1368	xml->indent_level--;
		1369	} else {
		1370	XML_INDENT(); printf("\n", section->name);
		1371	xml->indent_level--;
		1372	}
		1373	}
		1374
		1375	static void xml_print_str(WriterContext wctx, const char key, const char *value)
		1376	{
		1377	AVBPrint buf;
		1378	XMLContext *xml = wctx->priv;
		1379	const struct section *section = wctx->section[wctx->level];
		1380
		1381	av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
		1382
		1383	if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
		1384	XML_INDENT();
		1385	printf("<%s key=\"%s\"",
		1386	section->element_name, xml_escape_str(&buf, key, wctx));
		1387	av_bprint_clear(&buf);
		1388	printf(" value=\"%s\"/>\n", xml_escape_str(&buf, value, wctx));
		1389	} else {
		1390	if (wctx->nb_item[wctx->level])
		1391	printf(" ");
		1392	printf("%s=\"%s\"", key, xml_escape_str(&buf, value, wctx));
		1393	}
		1394
		1395	av_bprint_finalize(&buf, NULL);
		1396	}
		1397
		1398	static void xml_print_int(WriterContext wctx, const char key, long long int value)
		1399	{
		1400	if (wctx->nb_item[wctx->level])
		1401	printf(" ");
		1402	printf("%s=\"%lld\"", key, value);
		1403	}
		1404
		1405	static Writer xml_writer = {
		1406	.name = "xml",
		1407	.priv_size = sizeof(XMLContext),
		1408	.init = xml_init,
		1409	.print_section_header = xml_print_section_header,
		1410	.print_section_footer = xml_print_section_footer,
		1411	.print_integer = xml_print_int,
		1412	.print_string = xml_print_str,
		1413	.flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
		1414	.priv_class = &xml_class,
		1415	};
		1416
		1417	static void writer_register_all(void)
		1418	{
		1419	static int initialized;
		1420
		1421	if (initialized)
		1422	return;
		1423	initialized = 1;
		1424
		1425	writer_register(&default_writer);
		1426	writer_register(&compact_writer);
		1427	writer_register(&csv_writer);
		1428	writer_register(&flat_writer);
		1429	writer_register(&ini_writer);
		1430	writer_register(&json_writer);
		1431	writer_register(&xml_writer);
		1432	}
		1433
		1434	#define print_fmt(k, f, ...) do { \
		1435	av_bprint_clear(&pbuf); \
		1436	av_bprintf(&pbuf, f, __VA_ARGS__); \
		1437	writer_print_string(w, k, pbuf.str, 0); \
		1438	} while (0)
		1439
		1440	#define print_int(k, v) writer_print_integer(w, k, v)
		1441	#define print_q(k, v, s) writer_print_rational(w, k, v, s)
		1442	#define print_str(k, v) writer_print_string(w, k, v, 0)
		1443	#define print_str_opt(k, v) writer_print_string(w, k, v, 1)
		1444	#define print_time(k, v, tb) writer_print_time(w, k, v, tb, 0)
		1445	#define print_ts(k, v) writer_print_ts(w, k, v, 0)
		1446	#define print_duration_time(k, v, tb) writer_print_time(w, k, v, tb, 1)
		1447	#define print_duration_ts(k, v) writer_print_ts(w, k, v, 1)
		1448	#define print_val(k, v, u) do { \
		1449	struct unit_value uv; \
		1450	uv.val.i = v; \
		1451	uv.unit = u; \
		1452	writer_print_string(w, k, value_string(val_str, sizeof(val_str), uv), 0); \
		1453	} while (0)
		1454
		1455	#define print_section_header(s) writer_print_section_header(w, s)
		1456	#define print_section_footer(s) writer_print_section_footer(w, s)
		1457
		1458	static inline void show_tags(WriterContext wctx, AVDictionary tags, int section_id)
		1459	{
		1460	AVDictionaryEntry *tag = NULL;
		1461
		1462	if (!tags)
		1463	return;
		1464	writer_print_section_header(wctx, section_id);
		1465	while ((tag = av_dict_get(tags, "", tag, AV_DICT_IGNORE_SUFFIX)))
		1466	writer_print_string(wctx, tag->key, tag->value, 0);
		1467	writer_print_section_footer(wctx);
		1468	}
		1469
		1470	static void show_packet(WriterContext w, AVFormatContext fmt_ctx, AVPacket *pkt, int packet_idx)
		1471	{
		1472	char val_str[128];
		1473	AVStream *st = fmt_ctx->streams[pkt->stream_index];
		1474	AVBPrint pbuf;
		1475	const char *s;
		1476
		1477	av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
		1478
		1479	writer_print_section_header(w, SECTION_ID_PACKET);
		1480
		1481	s = av_get_media_type_string(st->codec->codec_type);
		1482	if (s) print_str ("codec_type", s);
		1483	else print_str_opt("codec_type", "unknown");
		1484	print_int("stream_index", pkt->stream_index);
		1485	print_ts ("pts", pkt->pts);
		1486	print_time("pts_time", pkt->pts, &st->time_base);
		1487	print_ts ("dts", pkt->dts);
		1488	print_time("dts_time", pkt->dts, &st->time_base);
		1489	print_duration_ts("duration", pkt->duration);
		1490	print_duration_time("duration_time", pkt->duration, &st->time_base);
		1491	print_duration_ts("convergence_duration", pkt->convergence_duration);
		1492	print_duration_time("convergence_duration_time", pkt->convergence_duration, &st->time_base);
		1493	print_val("size", pkt->size, unit_byte_str);
		1494	if (pkt->pos != -1) print_fmt ("pos", "%"PRId64, pkt->pos);
		1495	else print_str_opt("pos", "N/A");
		1496	print_fmt("flags", "%c", pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
		1497	if (do_show_data)
		1498	writer_print_data(w, "data", pkt->data, pkt->size);
		1499	writer_print_section_footer(w);
		1500
		1501	av_bprint_finalize(&pbuf, NULL);
		1502	fflush(stdout);
		1503	}
		1504
		1505	static void show_frame(WriterContext w, AVFrame frame, AVStream *stream,
		1506	AVFormatContext *fmt_ctx)
		1507	{
		1508	AVBPrint pbuf;
		1509	const char *s;
		1510
		1511	av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
		1512
		1513	writer_print_section_header(w, SECTION_ID_FRAME);
		1514
		1515	s = av_get_media_type_string(stream->codec->codec_type);
		1516	if (s) print_str ("media_type", s);
		1517	else print_str_opt("media_type", "unknown");
		1518	print_int("key_frame", frame->key_frame);
		1519	print_ts ("pkt_pts", frame->pkt_pts);
		1520	print_time("pkt_pts_time", frame->pkt_pts, &stream->time_base);
		1521	print_ts ("pkt_dts", frame->pkt_dts);
		1522	print_time("pkt_dts_time", frame->pkt_dts, &stream->time_base);
		1523	print_duration_ts ("pkt_duration", av_frame_get_pkt_duration(frame));
		1524	print_duration_time("pkt_duration_time", av_frame_get_pkt_duration(frame), &stream->time_base);
		1525	if (av_frame_get_pkt_pos (frame) != -1) print_fmt ("pkt_pos", "%"PRId64, av_frame_get_pkt_pos(frame));
		1526	else print_str_opt("pkt_pos", "N/A");
		1527	if (av_frame_get_pkt_size(frame) != -1) print_fmt ("pkt_size", "%d", av_frame_get_pkt_size(frame));
		1528	else print_str_opt("pkt_size", "N/A");
		1529
		1530	switch (stream->codec->codec_type) {
		1531	AVRational sar;
		1532
		1533	case AVMEDIA_TYPE_VIDEO:
		1534	print_int("width", frame->width);
		1535	print_int("height", frame->height);
		1536	s = av_get_pix_fmt_name(frame->format);
		1537	if (s) print_str ("pix_fmt", s);
		1538	else print_str_opt("pix_fmt", "unknown");
		1539	sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, frame);
		1540	if (sar.num) {
		1541	print_q("sample_aspect_ratio", sar, ':');
		1542	} else {
		1543	print_str_opt("sample_aspect_ratio", "N/A");
		1544	}
		1545	print_fmt("pict_type", "%c", av_get_picture_type_char(frame->pict_type));
		1546	print_int("coded_picture_number", frame->coded_picture_number);
		1547	print_int("display_picture_number", frame->display_picture_number);
		1548	print_int("interlaced_frame", frame->interlaced_frame);
		1549	print_int("top_field_first", frame->top_field_first);
		1550	print_int("repeat_pict", frame->repeat_pict);
		1551	break;
		1552
		1553	case AVMEDIA_TYPE_AUDIO:
		1554	s = av_get_sample_fmt_name(frame->format);
		1555	if (s) print_str ("sample_fmt", s);
		1556	else print_str_opt("sample_fmt", "unknown");
		1557	print_int("nb_samples", frame->nb_samples);
		1558	print_int("channels", av_frame_get_channels(frame));
		1559	if (av_frame_get_channel_layout(frame)) {
		1560	av_bprint_clear(&pbuf);
		1561	av_bprint_channel_layout(&pbuf, av_frame_get_channels(frame),
		1562	av_frame_get_channel_layout(frame));
		1563	print_str ("channel_layout", pbuf.str);
		1564	} else
		1565	print_str_opt("channel_layout", "unknown");
		1566	break;
		1567	}
		1568	show_tags(w, av_frame_get_metadata(frame), SECTION_ID_FRAME_TAGS);
		1569
		1570	writer_print_section_footer(w);
		1571
		1572	av_bprint_finalize(&pbuf, NULL);
		1573	fflush(stdout);
		1574	}
		1575
		1576	static av_always_inline int process_frame(WriterContext *w,
		1577	AVFormatContext *fmt_ctx,
		1578	AVFrame frame, AVPacket pkt)
		1579	{
		1580	AVCodecContext *dec_ctx = fmt_ctx->streams[pkt->stream_index]->codec;
		1581	int ret = 0, got_frame = 0;
		1582
		1583	avcodec_get_frame_defaults(frame);
		1584	if (dec_ctx->codec) {
		1585	switch (dec_ctx->codec_type) {
		1586	case AVMEDIA_TYPE_VIDEO:
		1587	ret = avcodec_decode_video2(dec_ctx, frame, &got_frame, pkt);
		1588	break;
		1589
		1590	case AVMEDIA_TYPE_AUDIO:
		1591	ret = avcodec_decode_audio4(dec_ctx, frame, &got_frame, pkt);
		1592	break;
		1593	}
		1594	}
		1595
		1596	if (ret < 0)
		1597	return ret;
		1598	ret = FFMIN(ret, pkt->size); /* guard against bogus return values */
		1599	pkt->data += ret;
		1600	pkt->size -= ret;
		1601	if (got_frame) {
		1602	nb_streams_frames[pkt->stream_index]++;
		1603	if (do_show_frames)
		1604	show_frame(w, frame, fmt_ctx->streams[pkt->stream_index], fmt_ctx);
		1605	}
		1606	return got_frame;
		1607	}
		1608
		1609	static void log_read_interval(const ReadInterval interval, void log_ctx, int log_level)
		1610	{
		1611	av_log(log_ctx, log_level, "id:%d", interval->id);
		1612
		1613	if (interval->has_start) {
		1614	av_log(log_ctx, log_level, " start:%s%s", interval->start_is_offset ? "+" : "",
		1615	av_ts2timestr(interval->start, &AV_TIME_BASE_Q));
		1616	} else {
		1617	av_log(log_ctx, log_level, " start:N/A");
		1618	}
		1619
		1620	if (interval->has_end) {
		1621	av_log(log_ctx, log_level, " end:%s", interval->end_is_offset ? "+" : "");
		1622	if (interval->duration_frames)
		1623	av_log(log_ctx, log_level, "#%"PRId64, interval->end);
		1624	else
		1625	av_log(log_ctx, log_level, "%s", av_ts2timestr(interval->end, &AV_TIME_BASE_Q));
		1626	} else {
		1627	av_log(log_ctx, log_level, " end:N/A");
		1628	}
		1629
		1630	av_log(log_ctx, log_level, "\n");
		1631	}
		1632
		1633	static int read_interval_packets(WriterContext w, AVFormatContext fmt_ctx,
		1634	const ReadInterval interval, int64_t cur_ts)
		1635	{
		1636	AVPacket pkt, pkt1;
		1637	AVFrame frame;
		1638	int ret = 0, i = 0, frame_count = 0;
		1639	int64_t start = -INT64_MAX, end = interval->end;
		1640	int has_start = 0, has_end = interval->has_end && !interval->end_is_offset;
		1641
		1642	av_init_packet(&pkt);
		1643
		1644	av_log(NULL, AV_LOG_VERBOSE, "Processing read interval ");
		1645	log_read_interval(interval, NULL, AV_LOG_VERBOSE);
		1646
		1647	if (interval->has_start) {
		1648	int64_t target;
		1649	if (interval->start_is_offset) {
		1650	if (*cur_ts == AV_NOPTS_VALUE) {
		1651	av_log(NULL, AV_LOG_ERROR,
		1652	"Could not seek to relative position since current "
		1653	"timestamp is not defined\n");
		1654	ret = AVERROR(EINVAL);
		1655	goto end;
		1656	}
		1657	target = *cur_ts + interval->start;
		1658	} else {
		1659	target = interval->start;
		1660	}
		1661
		1662	av_log(NULL, AV_LOG_VERBOSE, "Seeking to read interval start point %s\n",
		1663	av_ts2timestr(target, &AV_TIME_BASE_Q));
		1664	if ((ret = avformat_seek_file(fmt_ctx, -1, -INT64_MAX, target, INT64_MAX, 0)) < 0) {
		1665	av_log(NULL, AV_LOG_ERROR, "Could not seek to position %"PRId64": %s\n",
		1666	interval->start, av_err2str(ret));
		1667	goto end;
		1668	}
		1669	}
		1670
		1671	while (!av_read_frame(fmt_ctx, &pkt)) {
		1672	if (selected_streams[pkt.stream_index]) {
		1673	AVRational tb = fmt_ctx->streams[pkt.stream_index]->time_base;
		1674
		1675	if (pkt.pts != AV_NOPTS_VALUE)
		1676	*cur_ts = av_rescale_q(pkt.pts, tb, AV_TIME_BASE_Q);
		1677
		1678	if (!has_start && *cur_ts != AV_NOPTS_VALUE) {
		1679	start = *cur_ts;
		1680	has_start = 1;
		1681	}
		1682
		1683	if (has_start && !has_end && interval->end_is_offset) {
		1684	end = start + interval->end;
		1685	has_end = 1;
		1686	}
		1687
		1688	if (interval->end_is_offset && interval->duration_frames) {
		1689	if (frame_count >= interval->end)
		1690	break;
		1691	} else if (has_end && cur_ts != AV_NOPTS_VALUE && cur_ts >= end) {
		1692	break;
		1693	}
		1694
		1695	frame_count++;
		1696	if (do_read_packets) {
		1697	if (do_show_packets)
		1698	show_packet(w, fmt_ctx, &pkt, i++);
		1699	nb_streams_packets[pkt.stream_index]++;
		1700	}
		1701	if (do_read_frames) {
		1702	pkt1 = pkt;
		1703	while (pkt1.size && process_frame(w, fmt_ctx, &frame, &pkt1) > 0);
		1704	}
		1705	}
		1706	av_free_packet(&pkt);
		1707	}
		1708	av_init_packet(&pkt);
		1709	pkt.data = NULL;
		1710	pkt.size = 0;
		1711	//Flush remaining frames that are cached in the decoder
		1712	for (i = 0; i < fmt_ctx->nb_streams; i++) {
		1713	pkt.stream_index = i;
		1714	if (do_read_frames)
		1715	while (process_frame(w, fmt_ctx, &frame, &pkt) > 0);
		1716	}
		1717
		1718	end:
		1719	if (ret < 0) {
		1720	av_log(NULL, AV_LOG_ERROR, "Could not read packets in interval ");
		1721	log_read_interval(interval, NULL, AV_LOG_ERROR);
		1722	}
		1723	return ret;
		1724	}
		1725
		1726	static void read_packets(WriterContext w, AVFormatContext fmt_ctx)
		1727	{
		1728	int i, ret = 0;
		1729	int64_t cur_ts = fmt_ctx->start_time;
		1730
		1731	if (read_intervals_nb == 0) {
		1732	ReadInterval interval = (ReadInterval) { .has_start = 0, .has_end = 0 };
		1733	ret = read_interval_packets(w, fmt_ctx, &interval, &cur_ts);
		1734	} else {
		1735	for (i = 0; i < read_intervals_nb; i++) {
		1736	ret = read_interval_packets(w, fmt_ctx, &read_intervals[i], &cur_ts);
		1737	if (ret < 0)
		1738	break;
		1739	}
		1740	}
		1741	}
		1742
		1743	static void show_stream(WriterContext w, AVFormatContext fmt_ctx, int stream_idx, int in_program)
		1744	{
		1745	AVStream *stream = fmt_ctx->streams[stream_idx];
		1746	AVCodecContext *dec_ctx;
		1747	const AVCodec *dec;
		1748	char val_str[128];
		1749	const char *s;
		1750	AVRational sar, dar;
		1751	AVBPrint pbuf;
		1752
		1753	av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
		1754
		1755	writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM : SECTION_ID_STREAM);
		1756
		1757	print_int("index", stream->index);
		1758
		1759	if ((dec_ctx = stream->codec)) {
		1760	const char *profile = NULL;
		1761	dec = dec_ctx->codec;
		1762	if (dec) {
		1763	print_str("codec_name", dec->name);
		1764	if (!do_bitexact) {
		1765	if (dec->long_name) print_str ("codec_long_name", dec->long_name);
		1766	else print_str_opt("codec_long_name", "unknown");
		1767	}
		1768	} else {
		1769	print_str_opt("codec_name", "unknown");
		1770	if (!do_bitexact) {
		1771	print_str_opt("codec_long_name", "unknown");
		1772	}
		1773	}
		1774
		1775	if (dec && (profile = av_get_profile_name(dec, dec_ctx->profile)))
		1776	print_str("profile", profile);
		1777	else
		1778	print_str_opt("profile", "unknown");
		1779
		1780	s = av_get_media_type_string(dec_ctx->codec_type);
		1781	if (s) print_str ("codec_type", s);
		1782	else print_str_opt("codec_type", "unknown");
		1783	print_q("codec_time_base", dec_ctx->time_base, '/');
		1784
		1785	/* print AVI/FourCC tag */
		1786	av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
		1787	print_str("codec_tag_string", val_str);
		1788	print_fmt("codec_tag", "0x%04x", dec_ctx->codec_tag);
		1789
		1790	switch (dec_ctx->codec_type) {
		1791	case AVMEDIA_TYPE_VIDEO:
		1792	print_int("width", dec_ctx->width);
		1793	print_int("height", dec_ctx->height);
		1794	print_int("has_b_frames", dec_ctx->has_b_frames);
		1795	sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, NULL);
		1796	if (sar.den) {
		1797	print_q("sample_aspect_ratio", sar, ':');
		1798	av_reduce(&dar.num, &dar.den,
		1799	dec_ctx->width * sar.num,
		1800	dec_ctx->height * sar.den,
		1801	1024*1024);
		1802	print_q("display_aspect_ratio", dar, ':');
		1803	} else {
		1804	print_str_opt("sample_aspect_ratio", "N/A");
		1805	print_str_opt("display_aspect_ratio", "N/A");
		1806	}
		1807	s = av_get_pix_fmt_name(dec_ctx->pix_fmt);
		1808	if (s) print_str ("pix_fmt", s);
		1809	else print_str_opt("pix_fmt", "unknown");
		1810	print_int("level", dec_ctx->level);
		1811	if (dec_ctx->timecode_frame_start >= 0) {
		1812	char tcbuf[AV_TIMECODE_STR_SIZE];
		1813	av_timecode_make_mpeg_tc_string(tcbuf, dec_ctx->timecode_frame_start);
		1814	print_str("timecode", tcbuf);
		1815	} else {
		1816	print_str_opt("timecode", "N/A");
		1817	}
		1818	break;
		1819
		1820	case AVMEDIA_TYPE_AUDIO:
		1821	s = av_get_sample_fmt_name(dec_ctx->sample_fmt);
		1822	if (s) print_str ("sample_fmt", s);
		1823	else print_str_opt("sample_fmt", "unknown");
		1824	print_val("sample_rate", dec_ctx->sample_rate, unit_hertz_str);
		1825	print_int("channels", dec_ctx->channels);
		1826
		1827	if (dec_ctx->channel_layout) {
		1828	av_bprint_clear(&pbuf);
		1829	av_bprint_channel_layout(&pbuf, dec_ctx->channels, dec_ctx->channel_layout);
		1830	print_str ("channel_layout", pbuf.str);
		1831	} else {
		1832	print_str_opt("channel_layout", "unknown");
		1833	}
		1834
		1835	print_int("bits_per_sample", av_get_bits_per_sample(dec_ctx->codec_id));
		1836	break;
		1837
		1838	case AVMEDIA_TYPE_SUBTITLE:
		1839	if (dec_ctx->width)
		1840	print_int("width", dec_ctx->width);
		1841	else
		1842	print_str_opt("width", "N/A");
		1843	if (dec_ctx->height)
		1844	print_int("height", dec_ctx->height);
		1845	else
		1846	print_str_opt("height", "N/A");
		1847	break;
		1848	}
		1849	} else {
		1850	print_str_opt("codec_type", "unknown");
		1851	}
		1852	if (dec_ctx->codec && dec_ctx->codec->priv_class && show_private_data) {
		1853	const AVOption *opt = NULL;
		1854	while (opt = av_opt_next(dec_ctx->priv_data,opt)) {
		1855	uint8_t *str;
		1856	if (opt->flags) continue;
		1857	if (av_opt_get(dec_ctx->priv_data, opt->name, 0, &str) >= 0) {
		1858	print_str(opt->name, str);
		1859	av_free(str);
		1860	}
		1861	}
		1862	}
		1863
		1864	if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) print_fmt ("id", "0x%x", stream->id);
		1865	else print_str_opt("id", "N/A");
		1866	print_q("r_frame_rate", stream->r_frame_rate, '/');
		1867	print_q("avg_frame_rate", stream->avg_frame_rate, '/');
		1868	print_q("time_base", stream->time_base, '/');
		1869	print_ts ("start_pts", stream->start_time);
		1870	print_time("start_time", stream->start_time, &stream->time_base);
		1871	print_ts ("duration_ts", stream->duration);
		1872	print_time("duration", stream->duration, &stream->time_base);
		1873	if (dec_ctx->bit_rate > 0) print_val ("bit_rate", dec_ctx->bit_rate, unit_bit_per_second_str);
		1874	else print_str_opt("bit_rate", "N/A");
		1875	if (stream->nb_frames) print_fmt ("nb_frames", "%"PRId64, stream->nb_frames);
		1876	else print_str_opt("nb_frames", "N/A");
		1877	if (nb_streams_frames[stream_idx]) print_fmt ("nb_read_frames", "%"PRIu64, nb_streams_frames[stream_idx]);
		1878	else print_str_opt("nb_read_frames", "N/A");
		1879	if (nb_streams_packets[stream_idx]) print_fmt ("nb_read_packets", "%"PRIu64, nb_streams_packets[stream_idx]);
		1880	else print_str_opt("nb_read_packets", "N/A");
		1881	if (do_show_data)
		1882	writer_print_data(w, "extradata", dec_ctx->extradata,
		1883	dec_ctx->extradata_size);
		1884
		1885	/* Print disposition information */
		1886	#define PRINT_DISPOSITION(flagname, name) do { \
		1887	print_int(name, !!(stream->disposition & AV_DISPOSITION_##flagname)); \
		1888	} while (0)
		1889
		1890	if (do_show_stream_disposition) {
		1891	writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM_DISPOSITION : SECTION_ID_STREAM_DISPOSITION);
		1892	PRINT_DISPOSITION(DEFAULT, "default");
		1893	PRINT_DISPOSITION(DUB, "dub");
		1894	PRINT_DISPOSITION(ORIGINAL, "original");
		1895	PRINT_DISPOSITION(COMMENT, "comment");
		1896	PRINT_DISPOSITION(LYRICS, "lyrics");
		1897	PRINT_DISPOSITION(KARAOKE, "karaoke");
		1898	PRINT_DISPOSITION(FORCED, "forced");
		1899	PRINT_DISPOSITION(HEARING_IMPAIRED, "hearing_impaired");
		1900	PRINT_DISPOSITION(VISUAL_IMPAIRED, "visual_impaired");
		1901	PRINT_DISPOSITION(CLEAN_EFFECTS, "clean_effects");
		1902	PRINT_DISPOSITION(ATTACHED_PIC, "attached_pic");
		1903	writer_print_section_footer(w);
		1904	}
		1905
		1906	show_tags(w, stream->metadata, in_program ? SECTION_ID_PROGRAM_STREAM_TAGS : SECTION_ID_STREAM_TAGS);
		1907
		1908	writer_print_section_footer(w);
		1909	av_bprint_finalize(&pbuf, NULL);
		1910	fflush(stdout);
		1911	}
		1912
		1913	static void show_streams(WriterContext w, AVFormatContext fmt_ctx)
		1914	{
		1915	int i;
		1916	writer_print_section_header(w, SECTION_ID_STREAMS);
		1917	for (i = 0; i < fmt_ctx->nb_streams; i++)
		1918	if (selected_streams[i])
		1919	show_stream(w, fmt_ctx, i, 0);
		1920	writer_print_section_footer(w);
		1921	}
		1922
		1923	static void show_program(WriterContext w, AVFormatContext fmt_ctx, AVProgram *program)
		1924	{
		1925	int i;
		1926
		1927	writer_print_section_header(w, SECTION_ID_PROGRAM);
		1928	print_int("program_id", program->id);
		1929	print_int("program_num", program->program_num);
		1930	print_int("nb_streams", program->nb_stream_indexes);
		1931	print_int("pmt_pid", program->pmt_pid);
		1932	print_int("pcr_pid", program->pcr_pid);
		1933	print_ts("start_pts", program->start_time);
		1934	print_time("start_time", program->start_time, &AV_TIME_BASE_Q);
		1935	print_ts("end_pts", program->end_time);
		1936	print_time("end_time", program->end_time, &AV_TIME_BASE_Q);
		1937	show_tags(w, program->metadata, SECTION_ID_PROGRAM_TAGS);
		1938
		1939	writer_print_section_header(w, SECTION_ID_PROGRAM_STREAMS);
		1940	for (i = 0; i < program->nb_stream_indexes; i++) {
		1941	if (selected_streams[program->stream_index[i]])
		1942	show_stream(w, fmt_ctx, program->stream_index[i], 1);
		1943	}
		1944	writer_print_section_footer(w);
		1945
		1946	writer_print_section_footer(w);
		1947	}
		1948
		1949	static void show_programs(WriterContext w, AVFormatContext fmt_ctx)
		1950	{
		1951	int i;
		1952
		1953	writer_print_section_header(w, SECTION_ID_PROGRAMS);
		1954	for (i = 0; i < fmt_ctx->nb_programs; i++) {
		1955	AVProgram *program = fmt_ctx->programs[i];
		1956	if (!program)
		1957	continue;
		1958	show_program(w, fmt_ctx, program);
		1959	}
		1960	writer_print_section_footer(w);
		1961	}
		1962
		1963	static void show_chapters(WriterContext w, AVFormatContext fmt_ctx)
		1964	{
		1965	int i;
		1966
		1967	writer_print_section_header(w, SECTION_ID_CHAPTERS);
		1968	for (i = 0; i < fmt_ctx->nb_chapters; i++) {
		1969	AVChapter *chapter = fmt_ctx->chapters[i];
		1970
		1971	writer_print_section_header(w, SECTION_ID_CHAPTER);
		1972	print_int("id", chapter->id);
		1973	print_q ("time_base", chapter->time_base, '/');
		1974	print_int("start", chapter->start);
		1975	print_time("start_time", chapter->start, &chapter->time_base);
		1976	print_int("end", chapter->end);
		1977	print_time("end_time", chapter->end, &chapter->time_base);
		1978	show_tags(w, chapter->metadata, SECTION_ID_CHAPTER_TAGS);
		1979	writer_print_section_footer(w);
		1980	}
		1981	writer_print_section_footer(w);
		1982	}
		1983
		1984	static void show_format(WriterContext w, AVFormatContext fmt_ctx)
		1985	{
		1986	char val_str[128];
		1987	int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
		1988
		1989	writer_print_section_header(w, SECTION_ID_FORMAT);
		1990	print_str("filename", fmt_ctx->filename);
		1991	print_int("nb_streams", fmt_ctx->nb_streams);
		1992	print_int("nb_programs", fmt_ctx->nb_programs);
		1993	print_str("format_name", fmt_ctx->iformat->name);
		1994	if (!do_bitexact) {
		1995	if (fmt_ctx->iformat->long_name) print_str ("format_long_name", fmt_ctx->iformat->long_name);
		1996	else print_str_opt("format_long_name", "unknown");
		1997	}
		1998	print_time("start_time", fmt_ctx->start_time, &AV_TIME_BASE_Q);
		1999	print_time("duration", fmt_ctx->duration, &AV_TIME_BASE_Q);
		2000	if (size >= 0) print_val ("size", size, unit_byte_str);
		2001	else print_str_opt("size", "N/A");
		2002	if (fmt_ctx->bit_rate > 0) print_val ("bit_rate", fmt_ctx->bit_rate, unit_bit_per_second_str);
		2003	else print_str_opt("bit_rate", "N/A");
		2004	print_int("probe_score", av_format_get_probe_score(fmt_ctx));
		2005	show_tags(w, fmt_ctx->metadata, SECTION_ID_FORMAT_TAGS);
		2006
		2007	writer_print_section_footer(w);
		2008	fflush(stdout);
		2009	}
		2010
		2011	static void show_error(WriterContext *w, int err)
		2012	{
		2013	char errbuf[128];
		2014	const char *errbuf_ptr = errbuf;
		2015
		2016	if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
		2017	errbuf_ptr = strerror(AVUNERROR(err));
		2018
		2019	writer_print_section_header(w, SECTION_ID_ERROR);
		2020	print_int("code", err);
		2021	print_str("string", errbuf_ptr);
		2022	writer_print_section_footer(w);
		2023	}
		2024
		2025	static int open_input_file(AVFormatContext *fmt_ctx_ptr, const char filename)
		2026	{
		2027	int err, i, orig_nb_streams;
		2028	AVFormatContext *fmt_ctx = NULL;
		2029	AVDictionaryEntry *t;
		2030	AVDictionary **opts;
		2031
		2032	if ((err = avformat_open_input(&fmt_ctx, filename,
		2033	iformat, &format_opts)) < 0) {
		2034	print_error(filename, err);
		2035	return err;
		2036	}
		2037	if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
		2038	av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
		2039	return AVERROR_OPTION_NOT_FOUND;
		2040	}
		2041
		2042	/* fill the streams in the format context */
		2043	opts = setup_find_stream_info_opts(fmt_ctx, codec_opts);
		2044	orig_nb_streams = fmt_ctx->nb_streams;
		2045
		2046	if ((err = avformat_find_stream_info(fmt_ctx, opts)) < 0) {
		2047	print_error(filename, err);
		2048	return err;
		2049	}
		2050	for (i = 0; i < orig_nb_streams; i++)
		2051	av_dict_free(&opts[i]);
		2052	av_freep(&opts);
		2053
		2054	av_dump_format(fmt_ctx, 0, filename, 0);
		2055
		2056	/* bind a decoder to each input stream */
		2057	for (i = 0; i < fmt_ctx->nb_streams; i++) {
		2058	AVStream *stream = fmt_ctx->streams[i];
		2059	AVCodec *codec;
		2060
		2061	if (stream->codec->codec_id == AV_CODEC_ID_PROBE) {
		2062	av_log(NULL, AV_LOG_WARNING,
		2063	"Failed to probe codec for input stream %d\n",
		2064	stream->index);
		2065	} else if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
		2066	av_log(NULL, AV_LOG_WARNING,
		2067	"Unsupported codec with id %d for input stream %d\n",
		2068	stream->codec->codec_id, stream->index);
		2069	} else {
		2070	AVDictionary *opts = filter_codec_opts(codec_opts, stream->codec->codec_id,
		2071	fmt_ctx, stream, codec);
		2072	if (avcodec_open2(stream->codec, codec, &opts) < 0) {
		2073	av_log(NULL, AV_LOG_WARNING, "Could not open codec for input stream %d\n",
		2074	stream->index);
		2075	}
		2076	if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
		2077	av_log(NULL, AV_LOG_ERROR, "Option %s for input stream %d not found\n",
		2078	t->key, stream->index);
		2079	return AVERROR_OPTION_NOT_FOUND;
		2080	}
		2081	}
		2082	}
		2083
		2084	*fmt_ctx_ptr = fmt_ctx;
		2085	return 0;
		2086	}
		2087
		2088	static void close_input_file(AVFormatContext **ctx_ptr)
		2089	{
		2090	int i;
		2091	AVFormatContext fmt_ctx = ctx_ptr;
		2092
		2093	/* close decoder for each stream */
		2094	for (i = 0; i < fmt_ctx->nb_streams; i++)
		2095	if (fmt_ctx->streams[i]->codec->codec_id != AV_CODEC_ID_NONE)
		2096	avcodec_close(fmt_ctx->streams[i]->codec);
		2097
		2098	avformat_close_input(ctx_ptr);
		2099	}
		2100
		2101	static int probe_file(WriterContext wctx, const char filename)
		2102	{
		2103	AVFormatContext *fmt_ctx;
		2104	int ret, i;
		2105	int section_id;
		2106
		2107	do_read_frames = do_show_frames \|\| do_count_frames;
		2108	do_read_packets = do_show_packets \|\| do_count_packets;
		2109
		2110	ret = open_input_file(&fmt_ctx, filename);
		2111	if (ret < 0)
		2112	return ret;
		2113
		2114	nb_streams_frames = av_calloc(fmt_ctx->nb_streams, sizeof(*nb_streams_frames));
		2115	nb_streams_packets = av_calloc(fmt_ctx->nb_streams, sizeof(*nb_streams_packets));
		2116	selected_streams = av_calloc(fmt_ctx->nb_streams, sizeof(*selected_streams));
		2117
		2118	for (i = 0; i < fmt_ctx->nb_streams; i++) {
		2119	if (stream_specifier) {
		2120	ret = avformat_match_stream_specifier(fmt_ctx,
		2121	fmt_ctx->streams[i],
		2122	stream_specifier);
		2123	if (ret < 0)
		2124	goto end;
		2125	else
		2126	selected_streams[i] = ret;
		2127	ret = 0;
		2128	} else {
		2129	selected_streams[i] = 1;
		2130	}
		2131	}
		2132
		2133	if (do_read_frames \|\| do_read_packets) {
		2134	if (do_show_frames && do_show_packets &&
		2135	wctx->writer->flags & WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER)
		2136	section_id = SECTION_ID_PACKETS_AND_FRAMES;
		2137	else if (do_show_packets && !do_show_frames)
		2138	section_id = SECTION_ID_PACKETS;
		2139	else // (!do_show_packets && do_show_frames)
		2140	section_id = SECTION_ID_FRAMES;
		2141	if (do_show_frames \|\| do_show_packets)
		2142	writer_print_section_header(wctx, section_id);
		2143	read_packets(wctx, fmt_ctx);
		2144	if (do_show_frames \|\| do_show_packets)
		2145	writer_print_section_footer(wctx);
		2146	}
		2147	if (do_show_programs)
		2148	show_programs(wctx, fmt_ctx);
		2149	if (do_show_streams)
		2150	show_streams(wctx, fmt_ctx);
		2151	if (do_show_chapters)
		2152	show_chapters(wctx, fmt_ctx);
		2153	if (do_show_format)
		2154	show_format(wctx, fmt_ctx);
		2155
		2156	end:
		2157	close_input_file(&fmt_ctx);
		2158	av_freep(&nb_streams_frames);
		2159	av_freep(&nb_streams_packets);
		2160	av_freep(&selected_streams);
		2161
		2162	return ret;
		2163	}
		2164
		2165	static void show_usage(void)
		2166	{
		2167	av_log(NULL, AV_LOG_INFO, "Simple multimedia streams analyzer\n");
		2168	av_log(NULL, AV_LOG_INFO, "usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
		2169	av_log(NULL, AV_LOG_INFO, "\n");
		2170	}
		2171
		2172	static void ffprobe_show_program_version(WriterContext *w)
		2173	{
		2174	AVBPrint pbuf;
		2175	av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
		2176
		2177	writer_print_section_header(w, SECTION_ID_PROGRAM_VERSION);
		2178	print_str("version", FFMPEG_VERSION);
		2179	print_fmt("copyright", "Copyright (c) %d-%d the FFmpeg developers",
		2180	program_birth_year, this_year);
		2181	print_str("build_date", __DATE__);
		2182	print_str("build_time", __TIME__);
		2183	print_str("compiler_ident", CC_IDENT);
		2184	print_str("configuration", FFMPEG_CONFIGURATION);
		2185	writer_print_section_footer(w);
		2186
		2187	av_bprint_finalize(&pbuf, NULL);
		2188	}
		2189
		2190	#define SHOW_LIB_VERSION(libname, LIBNAME) \
		2191	do { \
		2192	if (CONFIG_##LIBNAME) { \
		2193	unsigned int version = libname##_version(); \
		2194	writer_print_section_header(w, SECTION_ID_LIBRARY_VERSION); \
		2195	print_str("name", "lib" #libname); \
		2196	print_int("major", LIB##LIBNAME##_VERSION_MAJOR); \
		2197	print_int("minor", LIB##LIBNAME##_VERSION_MINOR); \
		2198	print_int("micro", LIB##LIBNAME##_VERSION_MICRO); \
		2199	print_int("version", version); \
		2200	print_str("ident", LIB##LIBNAME##_IDENT); \
		2201	writer_print_section_footer(w); \
		2202	} \
		2203	} while (0)
		2204
		2205	static void ffprobe_show_library_versions(WriterContext *w)
		2206	{
		2207	writer_print_section_header(w, SECTION_ID_LIBRARY_VERSIONS);
		2208	SHOW_LIB_VERSION(avutil, AVUTIL);
		2209	SHOW_LIB_VERSION(avcodec, AVCODEC);
		2210	SHOW_LIB_VERSION(avformat, AVFORMAT);
		2211	SHOW_LIB_VERSION(avdevice, AVDEVICE);
		2212	SHOW_LIB_VERSION(avfilter, AVFILTER);
		2213	SHOW_LIB_VERSION(swscale, SWSCALE);
		2214	SHOW_LIB_VERSION(swresample, SWRESAMPLE);
		2215	SHOW_LIB_VERSION(postproc, POSTPROC);
		2216	writer_print_section_footer(w);
		2217	}
		2218
		2219	static int opt_format(void optctx, const char opt, const char *arg)
		2220	{
		2221	iformat = av_find_input_format(arg);
		2222	if (!iformat) {
		2223	av_log(NULL, AV_LOG_ERROR, "Unknown input format: %s\n", arg);
		2224	return AVERROR(EINVAL);
		2225	}
		2226	return 0;
		2227	}
		2228
		2229	static inline void mark_section_show_entries(SectionID section_id,
		2230	int show_all_entries, AVDictionary *entries)
		2231	{
		2232	struct section *section = §ions[section_id];
		2233
		2234	section->show_all_entries = show_all_entries;
		2235	if (show_all_entries) {
		2236	SectionID *id;
		2237	for (id = section->children_ids; *id != -1; id++)
		2238	mark_section_show_entries(*id, show_all_entries, entries);
		2239	} else {
		2240	av_dict_copy(§ion->entries_to_show, entries, 0);
		2241	}
		2242	}
		2243
		2244	static int match_section(const char *section_name,
		2245	int show_all_entries, AVDictionary *entries)
		2246	{
		2247	int i, ret = 0;
		2248
		2249	for (i = 0; i < FF_ARRAY_ELEMS(sections); i++) {
		2250	const struct section *section = §ions[i];
		2251	if (!strcmp(section_name, section->name) \|\|
		2252	(section->unique_name && !strcmp(section_name, section->unique_name))) {
		2253	av_log(NULL, AV_LOG_DEBUG,
		2254	"'%s' matches section with unique name '%s'\n", section_name,
		2255	(char *)av_x_if_null(section->unique_name, section->name));
		2256	ret++;
		2257	mark_section_show_entries(section->id, show_all_entries, entries);
		2258	}
		2259	}
		2260	return ret;
		2261	}
		2262
		2263	static int opt_show_entries(void optctx, const char opt, const char *arg)
		2264	{
		2265	const char *p = arg;
		2266	int ret = 0;
		2267
		2268	while (*p) {
		2269	AVDictionary *entries = NULL;
		2270	char *section_name = av_get_token(&p, "=:");
		2271	int show_all_entries = 0;
		2272
		2273	if (!section_name) {
		2274	av_log(NULL, AV_LOG_ERROR,
		2275	"Missing section name for option '%s'\n", opt);
		2276	return AVERROR(EINVAL);
		2277	}
		2278
		2279	if (*p == '=') {
		2280	p++;
		2281	while (p && p != ':') {
		2282	char *entry = av_get_token(&p, ",:");
		2283	if (!entry)
		2284	break;
		2285	av_log(NULL, AV_LOG_VERBOSE,
		2286	"Adding '%s' to the entries to show in section '%s'\n",
		2287	entry, section_name);
		2288	av_dict_set(&entries, entry, "", AV_DICT_DONT_STRDUP_KEY);
		2289	if (*p == ',')
		2290	p++;
		2291	}
		2292	} else {
		2293	show_all_entries = 1;
		2294	}
		2295
		2296	ret = match_section(section_name, show_all_entries, entries);
		2297	if (ret == 0) {
		2298	av_log(NULL, AV_LOG_ERROR, "No match for section '%s'\n", section_name);
		2299	ret = AVERROR(EINVAL);
		2300	}
		2301	av_dict_free(&entries);
		2302	av_free(section_name);
		2303
		2304	if (ret <= 0)
		2305	break;
		2306	if (*p)
		2307	p++;
		2308	}
		2309
		2310	return ret;
		2311	}
		2312
		2313	static int opt_show_format_entry(void optctx, const char opt, const char *arg)
		2314	{
		2315	char *buf = av_asprintf("format=%s", arg);
		2316	int ret;
		2317
		2318	av_log(NULL, AV_LOG_WARNING,
		2319	"Option '%s' is deprecated, use '-show_entries format=%s' instead\n",
		2320	opt, arg);
		2321	ret = opt_show_entries(optctx, opt, buf);
		2322	av_free(buf);
		2323	return ret;
		2324	}
		2325
		2326	static void opt_input_file(void optctx, const char arg)
		2327	{
		2328	if (input_filename) {
		2329	av_log(NULL, AV_LOG_ERROR,
		2330	"Argument '%s' provided as input filename, but '%s' was already specified.\n",
		2331	arg, input_filename);
		2332	exit_program(1);
		2333	}
		2334	if (!strcmp(arg, "-"))
		2335	arg = "pipe:";
		2336	input_filename = arg;
		2337	}
		2338
		2339	static int opt_input_file_i(void optctx, const char opt, const char *arg)
		2340	{
		2341	opt_input_file(optctx, arg);
		2342	return 0;
		2343	}
		2344
		2345	void show_help_default(const char opt, const char arg)
		2346	{
		2347	av_log_set_callback(log_callback_help);
		2348	show_usage();
		2349	show_help_options(options, "Main options:", 0, 0, 0);
		2350	printf("\n");
		2351
		2352	show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
		2353	}
		2354
		2355	/**
		2356	* Parse interval specification, according to the format:
		2357	* INTERVAL ::= [START\|+START_OFFSET][%[END\|+END_OFFSET]]
		2358	* INTERVALS ::= INTERVAL[,INTERVALS]
		2359	*/
		2360	static int parse_read_interval(const char *interval_spec,
		2361	ReadInterval *interval)
		2362	{
		2363	int ret = 0;
		2364	char next, p, *spec = av_strdup(interval_spec);
		2365	if (!spec)
		2366	return AVERROR(ENOMEM);
		2367
		2368	if (!*spec) {
		2369	av_log(NULL, AV_LOG_ERROR, "Invalid empty interval specification\n");
		2370	ret = AVERROR(EINVAL);
		2371	goto end;
		2372	}
		2373
		2374	p = spec;
		2375	next = strchr(spec, '%');
		2376	if (next)
		2377	*next++ = 0;
		2378
		2379	/* parse first part */
		2380	if (*p) {
		2381	interval->has_start = 1;
		2382
		2383	if (*p == '+') {
		2384	interval->start_is_offset = 1;
		2385	p++;
		2386	} else {
		2387	interval->start_is_offset = 0;
		2388	}
		2389
		2390	ret = av_parse_time(&interval->start, p, 1);
		2391	if (ret < 0) {
		2392	av_log(NULL, AV_LOG_ERROR, "Invalid interval start specification '%s'\n", p);
		2393	goto end;
		2394	}
		2395	} else {
		2396	interval->has_start = 0;
		2397	}
		2398
		2399	/* parse second part */
		2400	p = next;
		2401	if (p && *p) {
		2402	int64_t us;
		2403	interval->has_end = 1;
		2404
		2405	if (*p == '+') {
		2406	interval->end_is_offset = 1;
		2407	p++;
		2408	} else {
		2409	interval->end_is_offset = 0;
		2410	}
		2411
		2412	if (interval->end_is_offset && *p == '#') {
		2413	long long int lli;
		2414	char *tail;
		2415	interval->duration_frames = 1;
		2416	p++;
		2417	lli = strtoll(p, &tail, 10);
		2418	if (*tail \|\| lli < 0) {
		2419	av_log(NULL, AV_LOG_ERROR,
		2420	"Invalid or negative value '%s' for duration number of frames\n", p);
		2421	goto end;
		2422	}
		2423	interval->end = lli;
		2424	} else {
		2425	ret = av_parse_time(&us, p, 1);
		2426	if (ret < 0) {
		2427	av_log(NULL, AV_LOG_ERROR, "Invalid interval end/duration specification '%s'\n", p);
		2428	goto end;
		2429	}
		2430	interval->end = us;
		2431	}
		2432	} else {
		2433	interval->has_end = 0;
		2434	}
		2435
		2436	end:
		2437	av_free(spec);
		2438	return ret;
		2439	}
		2440
		2441	static int parse_read_intervals(const char *intervals_spec)
		2442	{
		2443	int ret, n, i;
		2444	char p, spec = av_strdup(intervals_spec);
		2445	if (!spec)
		2446	return AVERROR(ENOMEM);
		2447
		2448	/* preparse specification, get number of intervals */
		2449	for (n = 0, p = spec; *p; p++)
		2450	if (*p == ',')
		2451	n++;
		2452	n++;
		2453
		2454	read_intervals = av_malloc(n * sizeof(*read_intervals));
		2455	if (!read_intervals) {
		2456	ret = AVERROR(ENOMEM);
		2457	goto end;
		2458	}
		2459	read_intervals_nb = n;
		2460
		2461	/* parse intervals */
		2462	p = spec;
		2463	for (i = 0; p; i++) {
		2464	char *next;
		2465
		2466	av_assert0(i < read_intervals_nb);
		2467	next = strchr(p, ',');
		2468	if (next)
		2469	*next++ = 0;
		2470
		2471	read_intervals[i].id = i;
		2472	ret = parse_read_interval(p, &read_intervals[i]);
		2473	if (ret < 0) {
		2474	av_log(NULL, AV_LOG_ERROR, "Error parsing read interval #%d '%s'\n",
		2475	i, p);
		2476	goto end;
		2477	}
		2478	av_log(NULL, AV_LOG_VERBOSE, "Parsed log interval ");
		2479	log_read_interval(&read_intervals[i], NULL, AV_LOG_VERBOSE);
		2480	p = next;
		2481	}
		2482	av_assert0(i == read_intervals_nb);
		2483
		2484	end:
		2485	av_free(spec);
		2486	return ret;
		2487	}
		2488
		2489	static int opt_read_intervals(void optctx, const char opt, const char *arg)
		2490	{
		2491	return parse_read_intervals(arg);
		2492	}
		2493
		2494	static int opt_pretty(void optctx, const char opt, const char *arg)
		2495	{
		2496	show_value_unit = 1;
		2497	use_value_prefix = 1;
		2498	use_byte_value_binary_prefix = 1;
		2499	use_value_sexagesimal_format = 1;
		2500	return 0;
		2501	}
		2502
		2503	static void print_section(SectionID id, int level)
		2504	{
		2505	const SectionID *pid;
		2506	const struct section *section = §ions[id];
		2507	printf("%c%c%c",
		2508	section->flags & SECTION_FLAG_IS_WRAPPER ? 'W' : '.',
		2509	section->flags & SECTION_FLAG_IS_ARRAY ? 'A' : '.',
		2510	section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS ? 'V' : '.');
		2511	printf("%c %s", level 4, ' ', section->name);
		2512	if (section->unique_name)
		2513	printf("/%s", section->unique_name);
		2514	printf("\n");
		2515
		2516	for (pid = section->children_ids; *pid != -1; pid++)
		2517	print_section(*pid, level+1);
		2518	}
		2519
		2520	static int opt_sections(void optctx, const char opt, const char *arg)
		2521	{
		2522	printf("Sections:\n"
		2523	"W.. = Section is a wrapper (contains other sections, no local entries)\n"
		2524	".A. = Section contains an array of elements of the same type\n"
		2525	"..V = Section may contain a variable number of fields with variable keys\n"
		2526	"FLAGS NAME/UNIQUE_NAME\n"
		2527	"---\n");
		2528	print_section(SECTION_ID_ROOT, 0);
		2529	return 0;
		2530	}
		2531
		2532	static int opt_show_versions(const char opt, const char arg)
		2533	{
		2534	mark_section_show_entries(SECTION_ID_PROGRAM_VERSION, 1, NULL);
		2535	mark_section_show_entries(SECTION_ID_LIBRARY_VERSION, 1, NULL);
		2536	return 0;
		2537	}
		2538
		2539	#define DEFINE_OPT_SHOW_SECTION(section, target_section_id) \
		2540	static int opt_show_##section(const char opt, const char arg) \
		2541	{ \
		2542	mark_section_show_entries(SECTION_ID_##target_section_id, 1, NULL); \
		2543	return 0; \
		2544	}
		2545
		2546	DEFINE_OPT_SHOW_SECTION(chapters, CHAPTERS);
		2547	DEFINE_OPT_SHOW_SECTION(error, ERROR);
		2548	DEFINE_OPT_SHOW_SECTION(format, FORMAT);
		2549	DEFINE_OPT_SHOW_SECTION(frames, FRAMES);
		2550	DEFINE_OPT_SHOW_SECTION(library_versions, LIBRARY_VERSIONS);
		2551	DEFINE_OPT_SHOW_SECTION(packets, PACKETS);
		2552	DEFINE_OPT_SHOW_SECTION(program_version, PROGRAM_VERSION);
		2553	DEFINE_OPT_SHOW_SECTION(streams, STREAMS);
		2554	DEFINE_OPT_SHOW_SECTION(programs, PROGRAMS);
		2555
		2556	static const OptionDef real_options[] = {
		2557	#include "cmdutils_common_opts.h"
		2558	{ "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" },
		2559	{ "unit", OPT_BOOL, {&show_value_unit}, "show unit of the displayed values" },
		2560	{ "prefix", OPT_BOOL, {&use_value_prefix}, "use SI prefixes for the displayed values" },
		2561	{ "byte_binary_prefix", OPT_BOOL, {&use_byte_value_binary_prefix},
		2562	"use binary prefixes for byte units" },
		2563	{ "sexagesimal", OPT_BOOL, {&use_value_sexagesimal_format},
		2564	"use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
		2565	{ "pretty", 0, {.func_arg = opt_pretty},
		2566	"prettify the format of displayed values, make it more human readable" },
		2567	{ "print_format", OPT_STRING \| HAS_ARG, {(void*)&print_format},
		2568	"set the output printing format (available formats are: default, compact, csv, flat, ini, json, xml)", "format" },
		2569	{ "of", OPT_STRING \| HAS_ARG, {(void*)&print_format}, "alias for -print_format", "format" },
		2570	{ "select_streams", OPT_STRING \| HAS_ARG, {(void*)&stream_specifier}, "select the specified streams", "stream_specifier" },
		2571	{ "sections", OPT_EXIT, {.func_arg = opt_sections}, "print sections structure and section information, and exit" },
		2572	{ "show_data", OPT_BOOL, {(void*)&do_show_data}, "show packets data" },
		2573	{ "show_error", 0, {(void*)&opt_show_error}, "show probing error" },
		2574	{ "show_format", 0, {(void*)&opt_show_format}, "show format/container info" },
		2575	{ "show_frames", 0, {(void*)&opt_show_frames}, "show frames info" },
		2576	{ "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry},
		2577	"show a particular entry from the format/container info", "entry" },
		2578	{ "show_entries", HAS_ARG, {.func_arg = opt_show_entries},
		2579	"show a set of specified entries", "entry_list" },
		2580	{ "show_packets", 0, {(void*)&opt_show_packets}, "show packets info" },
		2581	{ "show_programs", 0, {(void*)&opt_show_programs}, "show programs info" },
		2582	{ "show_streams", 0, {(void*)&opt_show_streams}, "show streams info" },
		2583	{ "show_chapters", 0, {(void*)&opt_show_chapters}, "show chapters info" },
		2584	{ "count_frames", OPT_BOOL, {(void*)&do_count_frames}, "count the number of frames per stream" },
		2585	{ "count_packets", OPT_BOOL, {(void*)&do_count_packets}, "count the number of packets per stream" },
		2586	{ "show_program_version", 0, {(void*)&opt_show_program_version}, "show ffprobe version" },
		2587	{ "show_library_versions", 0, {(void*)&opt_show_library_versions}, "show library versions" },
		2588	{ "show_versions", 0, {(void*)&opt_show_versions}, "show program and library versions" },
		2589	{ "show_private_data", OPT_BOOL, {(void*)&show_private_data}, "show private data" },
		2590	{ "private", OPT_BOOL, {(void*)&show_private_data}, "same as show_private_data" },
		2591	{ "bitexact", OPT_BOOL, {&do_bitexact}, "force bitexact output" },
		2592	{ "read_intervals", HAS_ARG, {.func_arg = opt_read_intervals}, "set read intervals", "read_intervals" },
		2593	{ "default", HAS_ARG \| OPT_AUDIO \| OPT_VIDEO \| OPT_EXPERT, {.func_arg = opt_default}, "generic catch all option", "" },
		2594	{ "i", HAS_ARG, {.func_arg = opt_input_file_i}, "read specified file", "input_file"},
		2595	{ NULL, },
		2596	};
		2597
		2598	static inline int check_section_show_entries(int section_id)
		2599	{
		2600	int *id;
		2601	struct section *section = §ions[section_id];
		2602	if (sections[section_id].show_all_entries \|\| sections[section_id].entries_to_show)
		2603	return 1;
		2604	for (id = section->children_ids; *id != -1; id++)
		2605	if (check_section_show_entries(*id))
		2606	return 1;
		2607	return 0;
		2608	}
		2609
		2610	#define SET_DO_SHOW(id, varname) do { \
		2611	if (check_section_show_entries(SECTION_ID_##id)) \
		2612	do_show_##varname = 1; \
		2613	} while (0)
		2614
		2615	int main(int argc, char **argv)
		2616	{
		2617	const Writer *w;
		2618	WriterContext *wctx;
		2619	char *buf;
		2620	char w_name = NULL, w_args = NULL;
		2621	int ret, i;
		2622
		2623	av_log_set_flags(AV_LOG_SKIP_REPEATED);
		2624	register_exit(ffprobe_cleanup);
		2625
		2626	options = real_options;
		2627	parse_loglevel(argc, argv, options);
		2628	av_register_all();
		2629	avformat_network_init();
		2630	init_opts();
		2631	#if CONFIG_AVDEVICE
		2632	avdevice_register_all();
		2633	#endif
		2634
		2635	show_banner(argc, argv, options);
		2636	parse_options(NULL, argc, argv, options, opt_input_file);
		2637
		2638	/* mark things to show, based on -show_entries */
		2639	SET_DO_SHOW(CHAPTERS, chapters);
		2640	SET_DO_SHOW(ERROR, error);
		2641	SET_DO_SHOW(FORMAT, format);
		2642	SET_DO_SHOW(FRAMES, frames);
		2643	SET_DO_SHOW(LIBRARY_VERSIONS, library_versions);
		2644	SET_DO_SHOW(PACKETS, packets);
		2645	SET_DO_SHOW(PROGRAM_VERSION, program_version);
		2646	SET_DO_SHOW(PROGRAMS, programs);
		2647	SET_DO_SHOW(STREAMS, streams);
		2648	SET_DO_SHOW(STREAM_DISPOSITION, stream_disposition);
		2649	SET_DO_SHOW(PROGRAM_STREAM_DISPOSITION, stream_disposition);
		2650
		2651	if (do_bitexact && (do_show_program_version \|\| do_show_library_versions)) {
		2652	av_log(NULL, AV_LOG_ERROR,
		2653	"-bitexact and -show_program_version or -show_library_versions "
		2654	"options are incompatible\n");
		2655	ret = AVERROR(EINVAL);
		2656	goto end;
		2657	}
		2658
		2659	writer_register_all();
		2660
		2661	if (!print_format)
		2662	print_format = av_strdup("default");
		2663	if (!print_format) {
		2664	ret = AVERROR(ENOMEM);
		2665	goto end;
		2666	}
		2667	w_name = av_strtok(print_format, "=", &buf);
		2668	w_args = buf;
		2669
		2670	w = writer_get_by_name(w_name);
		2671	if (!w) {
		2672	av_log(NULL, AV_LOG_ERROR, "Unknown output format with name '%s'\n", w_name);
		2673	ret = AVERROR(EINVAL);
		2674	goto end;
		2675	}
		2676
		2677	if ((ret = writer_open(&wctx, w, w_args,
		2678	sections, FF_ARRAY_ELEMS(sections))) >= 0) {
		2679	writer_print_section_header(wctx, SECTION_ID_ROOT);
		2680
		2681	if (do_show_program_version)
		2682	ffprobe_show_program_version(wctx);
		2683	if (do_show_library_versions)
		2684	ffprobe_show_library_versions(wctx);
		2685
		2686	if (!input_filename &&
		2687	((do_show_format \|\| do_show_programs \|\| do_show_streams \|\| do_show_chapters \|\| do_show_packets \|\| do_show_error) \|\|
		2688	(!do_show_program_version && !do_show_library_versions))) {
		2689	show_usage();
		2690	av_log(NULL, AV_LOG_ERROR, "You have to specify one input file.\n");
		2691	av_log(NULL, AV_LOG_ERROR, "Use -h to get full help or, even better, run 'man %s'.\n", program_name);
		2692	ret = AVERROR(EINVAL);
		2693	} else if (input_filename) {
		2694	ret = probe_file(wctx, input_filename);
		2695	if (ret < 0 && do_show_error)
		2696	show_error(wctx, ret);
		2697	}
		2698
		2699	writer_print_section_footer(wctx);
		2700	writer_close(&wctx);
		2701	}
		2702
		2703	end:
		2704	av_freep(&print_format);
		2705	av_freep(&read_intervals);
		2706
		2707	uninit_opts();
		2708	for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
		2709	av_dict_free(&(sections[i].entries_to_show));
		2710
		2711	avformat_network_deinit();
		2712
		2713	return ret < 0;
		2714	}

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(root)/contrib/sdk/sources/ffmpeg/ffprobe.c @ 5136 – Rev