]> git.sesse.net Git - ffmpeg/blob - fftools/ffprobe.c
ffmpeg: deduplicate init_output_stream usage logic
[ffmpeg] / fftools / ffprobe.c
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 "libavutil/ffversion.h"
28
29 #include <string.h>
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/display.h"
37 #include "libavutil/hash.h"
38 #include "libavutil/mastering_display_metadata.h"
39 #include "libavutil/dovi_meta.h"
40 #include "libavutil/opt.h"
41 #include "libavutil/pixdesc.h"
42 #include "libavutil/spherical.h"
43 #include "libavutil/stereo3d.h"
44 #include "libavutil/dict.h"
45 #include "libavutil/intreadwrite.h"
46 #include "libavutil/libm.h"
47 #include "libavutil/parseutils.h"
48 #include "libavutil/timecode.h"
49 #include "libavutil/timestamp.h"
50 #include "libavdevice/avdevice.h"
51 #include "libswscale/swscale.h"
52 #include "libswresample/swresample.h"
53 #include "libpostproc/postprocess.h"
54 #include "cmdutils.h"
55
56 #include "libavutil/thread.h"
57
58 #if !HAVE_THREADS
59 #  ifdef pthread_mutex_lock
60 #    undef pthread_mutex_lock
61 #  endif
62 #  define pthread_mutex_lock(a) do{}while(0)
63 #  ifdef pthread_mutex_unlock
64 #    undef pthread_mutex_unlock
65 #  endif
66 #  define pthread_mutex_unlock(a) do{}while(0)
67 #endif
68
69 typedef struct InputStream {
70     AVStream *st;
71
72     AVCodecContext *dec_ctx;
73 } InputStream;
74
75 typedef struct InputFile {
76     AVFormatContext *fmt_ctx;
77
78     InputStream *streams;
79     int       nb_streams;
80 } InputFile;
81
82 const char program_name[] = "ffprobe";
83 const int program_birth_year = 2007;
84
85 static int do_bitexact = 0;
86 static int do_count_frames = 0;
87 static int do_count_packets = 0;
88 static int do_read_frames  = 0;
89 static int do_read_packets = 0;
90 static int do_show_chapters = 0;
91 static int do_show_error   = 0;
92 static int do_show_format  = 0;
93 static int do_show_frames  = 0;
94 static int do_show_packets = 0;
95 static int do_show_programs = 0;
96 static int do_show_streams = 0;
97 static int do_show_stream_disposition = 0;
98 static int do_show_data    = 0;
99 static int do_show_program_version  = 0;
100 static int do_show_library_versions = 0;
101 static int do_show_pixel_formats = 0;
102 static int do_show_pixel_format_flags = 0;
103 static int do_show_pixel_format_components = 0;
104 static int do_show_log = 0;
105
106 static int do_show_chapter_tags = 0;
107 static int do_show_format_tags = 0;
108 static int do_show_frame_tags = 0;
109 static int do_show_program_tags = 0;
110 static int do_show_stream_tags = 0;
111 static int do_show_packet_tags = 0;
112
113 static int show_value_unit              = 0;
114 static int use_value_prefix             = 0;
115 static int use_byte_value_binary_prefix = 0;
116 static int use_value_sexagesimal_format = 0;
117 static int show_private_data            = 1;
118
119 static char *print_format;
120 static char *stream_specifier;
121 static char *show_data_hash;
122
123 typedef struct ReadInterval {
124     int id;             ///< identifier
125     int64_t start, end; ///< start, end in second/AV_TIME_BASE units
126     int has_start, has_end;
127     int start_is_offset, end_is_offset;
128     int duration_frames;
129 } ReadInterval;
130
131 static ReadInterval *read_intervals;
132 static int read_intervals_nb = 0;
133
134 static int find_stream_info  = 1;
135
136 /* section structure definition */
137
138 #define SECTION_MAX_NB_CHILDREN 10
139
140 struct section {
141     int id;             ///< unique id identifying a section
142     const char *name;
143
144 #define SECTION_FLAG_IS_WRAPPER      1 ///< the section only contains other sections, but has no data at its own level
145 #define SECTION_FLAG_IS_ARRAY        2 ///< the section contains an array of elements of the same type
146 #define SECTION_FLAG_HAS_VARIABLE_FIELDS 4 ///< the section may contain a variable number of fields with variable keys.
147                                            ///  For these sections the element_name field is mandatory.
148     int flags;
149     int children_ids[SECTION_MAX_NB_CHILDREN+1]; ///< list of children section IDS, terminated by -1
150     const char *element_name; ///< name of the contained element, if provided
151     const char *unique_name;  ///< unique section name, in case the name is ambiguous
152     AVDictionary *entries_to_show;
153     int show_all_entries;
154 };
155
156 typedef enum {
157     SECTION_ID_NONE = -1,
158     SECTION_ID_CHAPTER,
159     SECTION_ID_CHAPTER_TAGS,
160     SECTION_ID_CHAPTERS,
161     SECTION_ID_ERROR,
162     SECTION_ID_FORMAT,
163     SECTION_ID_FORMAT_TAGS,
164     SECTION_ID_FRAME,
165     SECTION_ID_FRAMES,
166     SECTION_ID_FRAME_TAGS,
167     SECTION_ID_FRAME_SIDE_DATA_LIST,
168     SECTION_ID_FRAME_SIDE_DATA,
169     SECTION_ID_FRAME_SIDE_DATA_TIMECODE_LIST,
170     SECTION_ID_FRAME_SIDE_DATA_TIMECODE,
171     SECTION_ID_FRAME_LOG,
172     SECTION_ID_FRAME_LOGS,
173     SECTION_ID_LIBRARY_VERSION,
174     SECTION_ID_LIBRARY_VERSIONS,
175     SECTION_ID_PACKET,
176     SECTION_ID_PACKET_TAGS,
177     SECTION_ID_PACKETS,
178     SECTION_ID_PACKETS_AND_FRAMES,
179     SECTION_ID_PACKET_SIDE_DATA_LIST,
180     SECTION_ID_PACKET_SIDE_DATA,
181     SECTION_ID_PIXEL_FORMAT,
182     SECTION_ID_PIXEL_FORMAT_FLAGS,
183     SECTION_ID_PIXEL_FORMAT_COMPONENT,
184     SECTION_ID_PIXEL_FORMAT_COMPONENTS,
185     SECTION_ID_PIXEL_FORMATS,
186     SECTION_ID_PROGRAM_STREAM_DISPOSITION,
187     SECTION_ID_PROGRAM_STREAM_TAGS,
188     SECTION_ID_PROGRAM,
189     SECTION_ID_PROGRAM_STREAMS,
190     SECTION_ID_PROGRAM_STREAM,
191     SECTION_ID_PROGRAM_TAGS,
192     SECTION_ID_PROGRAM_VERSION,
193     SECTION_ID_PROGRAMS,
194     SECTION_ID_ROOT,
195     SECTION_ID_STREAM,
196     SECTION_ID_STREAM_DISPOSITION,
197     SECTION_ID_STREAMS,
198     SECTION_ID_STREAM_TAGS,
199     SECTION_ID_STREAM_SIDE_DATA_LIST,
200     SECTION_ID_STREAM_SIDE_DATA,
201     SECTION_ID_SUBTITLE,
202 } SectionID;
203
204 static struct section sections[] = {
205     [SECTION_ID_CHAPTERS] =           { SECTION_ID_CHAPTERS, "chapters", SECTION_FLAG_IS_ARRAY, { SECTION_ID_CHAPTER, -1 } },
206     [SECTION_ID_CHAPTER] =            { SECTION_ID_CHAPTER, "chapter", 0, { SECTION_ID_CHAPTER_TAGS, -1 } },
207     [SECTION_ID_CHAPTER_TAGS] =       { SECTION_ID_CHAPTER_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "chapter_tags" },
208     [SECTION_ID_ERROR] =              { SECTION_ID_ERROR, "error", 0, { -1 } },
209     [SECTION_ID_FORMAT] =             { SECTION_ID_FORMAT, "format", 0, { SECTION_ID_FORMAT_TAGS, -1 } },
210     [SECTION_ID_FORMAT_TAGS] =        { SECTION_ID_FORMAT_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "format_tags" },
211     [SECTION_ID_FRAMES] =             { SECTION_ID_FRAMES, "frames", SECTION_FLAG_IS_ARRAY, { SECTION_ID_FRAME, SECTION_ID_SUBTITLE, -1 } },
212     [SECTION_ID_FRAME] =              { SECTION_ID_FRAME, "frame", 0, { SECTION_ID_FRAME_TAGS, SECTION_ID_FRAME_SIDE_DATA_LIST, SECTION_ID_FRAME_LOGS, -1 } },
213     [SECTION_ID_FRAME_TAGS] =         { SECTION_ID_FRAME_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "frame_tags" },
214     [SECTION_ID_FRAME_SIDE_DATA_LIST] ={ SECTION_ID_FRAME_SIDE_DATA_LIST, "side_data_list", SECTION_FLAG_IS_ARRAY, { SECTION_ID_FRAME_SIDE_DATA, -1 }, .element_name = "side_data", .unique_name = "frame_side_data_list" },
215     [SECTION_ID_FRAME_SIDE_DATA] =     { SECTION_ID_FRAME_SIDE_DATA, "side_data", 0, { SECTION_ID_FRAME_SIDE_DATA_TIMECODE_LIST, -1 } },
216     [SECTION_ID_FRAME_SIDE_DATA_TIMECODE_LIST] =     { SECTION_ID_FRAME_SIDE_DATA_TIMECODE_LIST, "timecodes", SECTION_FLAG_IS_ARRAY, { SECTION_ID_FRAME_SIDE_DATA_TIMECODE, -1 } },
217     [SECTION_ID_FRAME_SIDE_DATA_TIMECODE] =     { SECTION_ID_FRAME_SIDE_DATA_TIMECODE, "timecode", 0, { -1 } },
218     [SECTION_ID_FRAME_LOGS] =         { SECTION_ID_FRAME_LOGS, "logs", SECTION_FLAG_IS_ARRAY, { SECTION_ID_FRAME_LOG, -1 } },
219     [SECTION_ID_FRAME_LOG] =          { SECTION_ID_FRAME_LOG, "log", 0, { -1 },  },
220     [SECTION_ID_LIBRARY_VERSIONS] =   { SECTION_ID_LIBRARY_VERSIONS, "library_versions", SECTION_FLAG_IS_ARRAY, { SECTION_ID_LIBRARY_VERSION, -1 } },
221     [SECTION_ID_LIBRARY_VERSION] =    { SECTION_ID_LIBRARY_VERSION, "library_version", 0, { -1 } },
222     [SECTION_ID_PACKETS] =            { SECTION_ID_PACKETS, "packets", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },
223     [SECTION_ID_PACKETS_AND_FRAMES] = { SECTION_ID_PACKETS_AND_FRAMES, "packets_and_frames", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },
224     [SECTION_ID_PACKET] =             { SECTION_ID_PACKET, "packet", 0, { SECTION_ID_PACKET_TAGS, SECTION_ID_PACKET_SIDE_DATA_LIST, -1 } },
225     [SECTION_ID_PACKET_TAGS] =        { SECTION_ID_PACKET_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "packet_tags" },
226     [SECTION_ID_PACKET_SIDE_DATA_LIST] ={ SECTION_ID_PACKET_SIDE_DATA_LIST, "side_data_list", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET_SIDE_DATA, -1 }, .element_name = "side_data", .unique_name = "packet_side_data_list" },
227     [SECTION_ID_PACKET_SIDE_DATA] =     { SECTION_ID_PACKET_SIDE_DATA, "side_data", 0, { -1 } },
228     [SECTION_ID_PIXEL_FORMATS] =      { SECTION_ID_PIXEL_FORMATS, "pixel_formats", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PIXEL_FORMAT, -1 } },
229     [SECTION_ID_PIXEL_FORMAT] =       { SECTION_ID_PIXEL_FORMAT, "pixel_format", 0, { SECTION_ID_PIXEL_FORMAT_FLAGS, SECTION_ID_PIXEL_FORMAT_COMPONENTS, -1 } },
230     [SECTION_ID_PIXEL_FORMAT_FLAGS] = { SECTION_ID_PIXEL_FORMAT_FLAGS, "flags", 0, { -1 }, .unique_name = "pixel_format_flags" },
231     [SECTION_ID_PIXEL_FORMAT_COMPONENTS] = { SECTION_ID_PIXEL_FORMAT_COMPONENTS, "components", SECTION_FLAG_IS_ARRAY, {SECTION_ID_PIXEL_FORMAT_COMPONENT, -1 }, .unique_name = "pixel_format_components" },
232     [SECTION_ID_PIXEL_FORMAT_COMPONENT]  = { SECTION_ID_PIXEL_FORMAT_COMPONENT, "component", 0, { -1 } },
233     [SECTION_ID_PROGRAM_STREAM_DISPOSITION] = { SECTION_ID_PROGRAM_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "program_stream_disposition" },
234     [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" },
235     [SECTION_ID_PROGRAM] =                    { SECTION_ID_PROGRAM, "program", 0, { SECTION_ID_PROGRAM_TAGS, SECTION_ID_PROGRAM_STREAMS, -1 } },
236     [SECTION_ID_PROGRAM_STREAMS] =            { SECTION_ID_PROGRAM_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM_STREAM, -1 }, .unique_name = "program_streams" },
237     [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" },
238     [SECTION_ID_PROGRAM_TAGS] =               { SECTION_ID_PROGRAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "program_tags" },
239     [SECTION_ID_PROGRAM_VERSION] =    { SECTION_ID_PROGRAM_VERSION, "program_version", 0, { -1 } },
240     [SECTION_ID_PROGRAMS] =                   { SECTION_ID_PROGRAMS, "programs", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM, -1 } },
241     [SECTION_ID_ROOT] =               { SECTION_ID_ROOT, "root", SECTION_FLAG_IS_WRAPPER,
242                                         { SECTION_ID_CHAPTERS, SECTION_ID_FORMAT, SECTION_ID_FRAMES, SECTION_ID_PROGRAMS, SECTION_ID_STREAMS,
243                                           SECTION_ID_PACKETS, SECTION_ID_ERROR, SECTION_ID_PROGRAM_VERSION, SECTION_ID_LIBRARY_VERSIONS,
244                                           SECTION_ID_PIXEL_FORMATS, -1} },
245     [SECTION_ID_STREAMS] =            { SECTION_ID_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_STREAM, -1 } },
246     [SECTION_ID_STREAM] =             { SECTION_ID_STREAM, "stream", 0, { SECTION_ID_STREAM_DISPOSITION, SECTION_ID_STREAM_TAGS, SECTION_ID_STREAM_SIDE_DATA_LIST, -1 } },
247     [SECTION_ID_STREAM_DISPOSITION] = { SECTION_ID_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "stream_disposition" },
248     [SECTION_ID_STREAM_TAGS] =        { SECTION_ID_STREAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "stream_tags" },
249     [SECTION_ID_STREAM_SIDE_DATA_LIST] ={ SECTION_ID_STREAM_SIDE_DATA_LIST, "side_data_list", SECTION_FLAG_IS_ARRAY, { SECTION_ID_STREAM_SIDE_DATA, -1 }, .element_name = "side_data", .unique_name = "stream_side_data_list" },
250     [SECTION_ID_STREAM_SIDE_DATA] =     { SECTION_ID_STREAM_SIDE_DATA, "side_data", 0, { -1 } },
251     [SECTION_ID_SUBTITLE] =           { SECTION_ID_SUBTITLE, "subtitle", 0, { -1 } },
252 };
253
254 static const OptionDef *options;
255
256 /* FFprobe context */
257 static const char *input_filename;
258 static const char *print_input_filename;
259 static AVInputFormat *iformat = NULL;
260
261 static struct AVHashContext *hash;
262
263 static const struct {
264     double bin_val;
265     double dec_val;
266     const char *bin_str;
267     const char *dec_str;
268 } si_prefixes[] = {
269     { 1.0, 1.0, "", "" },
270     { 1.024e3, 1e3, "Ki", "K" },
271     { 1.048576e6, 1e6, "Mi", "M" },
272     { 1.073741824e9, 1e9, "Gi", "G" },
273     { 1.099511627776e12, 1e12, "Ti", "T" },
274     { 1.125899906842624e15, 1e15, "Pi", "P" },
275 };
276
277 static const char unit_second_str[]         = "s"    ;
278 static const char unit_hertz_str[]          = "Hz"   ;
279 static const char unit_byte_str[]           = "byte" ;
280 static const char unit_bit_per_second_str[] = "bit/s";
281
282 static int nb_streams;
283 static uint64_t *nb_streams_packets;
284 static uint64_t *nb_streams_frames;
285 static int *selected_streams;
286
287 #if HAVE_THREADS
288 pthread_mutex_t log_mutex;
289 #endif
290 typedef struct LogBuffer {
291     char *context_name;
292     int log_level;
293     char *log_message;
294     AVClassCategory category;
295     char *parent_name;
296     AVClassCategory parent_category;
297 }LogBuffer;
298
299 static LogBuffer *log_buffer;
300 static int log_buffer_size;
301
302 static void log_callback(void *ptr, int level, const char *fmt, va_list vl)
303 {
304     AVClass* avc = ptr ? *(AVClass **) ptr : NULL;
305     va_list vl2;
306     char line[1024];
307     static int print_prefix = 1;
308     void *new_log_buffer;
309
310     va_copy(vl2, vl);
311     av_log_default_callback(ptr, level, fmt, vl);
312     av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
313     va_end(vl2);
314
315 #if HAVE_THREADS
316     pthread_mutex_lock(&log_mutex);
317
318     new_log_buffer = av_realloc_array(log_buffer, log_buffer_size + 1, sizeof(*log_buffer));
319     if (new_log_buffer) {
320         char *msg;
321         int i;
322
323         log_buffer = new_log_buffer;
324         memset(&log_buffer[log_buffer_size], 0, sizeof(log_buffer[log_buffer_size]));
325         log_buffer[log_buffer_size].context_name= avc ? av_strdup(avc->item_name(ptr)) : NULL;
326         if (avc) {
327             if (avc->get_category) log_buffer[log_buffer_size].category = avc->get_category(ptr);
328             else                   log_buffer[log_buffer_size].category = avc->category;
329         }
330         log_buffer[log_buffer_size].log_level   = level;
331         msg = log_buffer[log_buffer_size].log_message = av_strdup(line);
332         for (i=strlen(msg) - 1; i>=0 && msg[i] == '\n'; i--) {
333             msg[i] = 0;
334         }
335         if (avc && avc->parent_log_context_offset) {
336             AVClass** parent = *(AVClass ***) (((uint8_t *) ptr) +
337                                    avc->parent_log_context_offset);
338             if (parent && *parent) {
339                 log_buffer[log_buffer_size].parent_name = av_strdup((*parent)->item_name(parent));
340                 log_buffer[log_buffer_size].parent_category =
341                     (*parent)->get_category ? (*parent)->get_category(parent) :(*parent)->category;
342             }
343         }
344         log_buffer_size ++;
345     }
346
347     pthread_mutex_unlock(&log_mutex);
348 #endif
349 }
350
351 static void ffprobe_cleanup(int ret)
352 {
353     int i;
354     for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
355         av_dict_free(&(sections[i].entries_to_show));
356
357 #if HAVE_THREADS
358     pthread_mutex_destroy(&log_mutex);
359 #endif
360 }
361
362 struct unit_value {
363     union { double d; long long int i; } val;
364     const char *unit;
365 };
366
367 static char *value_string(char *buf, int buf_size, struct unit_value uv)
368 {
369     double vald;
370     long long int vali;
371     int show_float = 0;
372
373     if (uv.unit == unit_second_str) {
374         vald = uv.val.d;
375         show_float = 1;
376     } else {
377         vald = vali = uv.val.i;
378     }
379
380     if (uv.unit == unit_second_str && use_value_sexagesimal_format) {
381         double secs;
382         int hours, mins;
383         secs  = vald;
384         mins  = (int)secs / 60;
385         secs  = secs - mins * 60;
386         hours = mins / 60;
387         mins %= 60;
388         snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
389     } else {
390         const char *prefix_string = "";
391
392         if (use_value_prefix && vald > 1) {
393             long long int index;
394
395             if (uv.unit == unit_byte_str && use_byte_value_binary_prefix) {
396                 index = (long long int) (log2(vald)) / 10;
397                 index = av_clip(index, 0, FF_ARRAY_ELEMS(si_prefixes) - 1);
398                 vald /= si_prefixes[index].bin_val;
399                 prefix_string = si_prefixes[index].bin_str;
400             } else {
401                 index = (long long int) (log10(vald)) / 3;
402                 index = av_clip(index, 0, FF_ARRAY_ELEMS(si_prefixes) - 1);
403                 vald /= si_prefixes[index].dec_val;
404                 prefix_string = si_prefixes[index].dec_str;
405             }
406             vali = vald;
407         }
408
409         if (show_float || (use_value_prefix && vald != (long long int)vald))
410             snprintf(buf, buf_size, "%f", vald);
411         else
412             snprintf(buf, buf_size, "%lld", vali);
413         av_strlcatf(buf, buf_size, "%s%s%s", *prefix_string || show_value_unit ? " " : "",
414                  prefix_string, show_value_unit ? uv.unit : "");
415     }
416
417     return buf;
418 }
419
420 /* WRITERS API */
421
422 typedef struct WriterContext WriterContext;
423
424 #define WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS 1
425 #define WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER 2
426
427 typedef enum {
428     WRITER_STRING_VALIDATION_FAIL,
429     WRITER_STRING_VALIDATION_REPLACE,
430     WRITER_STRING_VALIDATION_IGNORE,
431     WRITER_STRING_VALIDATION_NB
432 } StringValidation;
433
434 typedef struct Writer {
435     const AVClass *priv_class;      ///< private class of the writer, if any
436     int priv_size;                  ///< private size for the writer context
437     const char *name;
438
439     int  (*init)  (WriterContext *wctx);
440     void (*uninit)(WriterContext *wctx);
441
442     void (*print_section_header)(WriterContext *wctx);
443     void (*print_section_footer)(WriterContext *wctx);
444     void (*print_integer)       (WriterContext *wctx, const char *, long long int);
445     void (*print_rational)      (WriterContext *wctx, AVRational *q, char *sep);
446     void (*print_string)        (WriterContext *wctx, const char *, const char *);
447     int flags;                  ///< a combination or WRITER_FLAG_*
448 } Writer;
449
450 #define SECTION_MAX_NB_LEVELS 10
451
452 struct WriterContext {
453     const AVClass *class;           ///< class of the writer
454     const Writer *writer;           ///< the Writer of which this is an instance
455     char *name;                     ///< name of this writer instance
456     void *priv;                     ///< private data for use by the filter
457
458     const struct section *sections; ///< array containing all sections
459     int nb_sections;                ///< number of sections
460
461     int level;                      ///< current level, starting from 0
462
463     /** number of the item printed in the given section, starting from 0 */
464     unsigned int nb_item[SECTION_MAX_NB_LEVELS];
465
466     /** section per each level */
467     const struct section *section[SECTION_MAX_NB_LEVELS];
468     AVBPrint section_pbuf[SECTION_MAX_NB_LEVELS]; ///< generic print buffer dedicated to each section,
469                                                   ///  used by various writers
470
471     unsigned int nb_section_packet; ///< number of the packet section in case we are in "packets_and_frames" section
472     unsigned int nb_section_frame;  ///< number of the frame  section in case we are in "packets_and_frames" section
473     unsigned int nb_section_packet_frame; ///< nb_section_packet or nb_section_frame according if is_packets_and_frames
474
475     int string_validation;
476     char *string_validation_replacement;
477     unsigned int string_validation_utf8_flags;
478 };
479
480 static const char *writer_get_name(void *p)
481 {
482     WriterContext *wctx = p;
483     return wctx->writer->name;
484 }
485
486 #define OFFSET(x) offsetof(WriterContext, x)
487
488 static const AVOption writer_options[] = {
489     { "string_validation", "set string validation mode",
490       OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },
491     { "sv", "set string validation mode",
492       OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },
493     { "ignore",  NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_IGNORE},  .unit = "sv" },
494     { "replace", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_REPLACE}, .unit = "sv" },
495     { "fail",    NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_FAIL},    .unit = "sv" },
496     { "string_validation_replacement", "set string validation replacement string", OFFSET(string_validation_replacement), AV_OPT_TYPE_STRING, {.str=""}},
497     { "svr", "set string validation replacement string", OFFSET(string_validation_replacement), AV_OPT_TYPE_STRING, {.str="\xEF\xBF\xBD"}},
498     { NULL }
499 };
500
501 static void *writer_child_next(void *obj, void *prev)
502 {
503     WriterContext *ctx = obj;
504     if (!prev && ctx->writer && ctx->writer->priv_class && ctx->priv)
505         return ctx->priv;
506     return NULL;
507 }
508
509 static const AVClass writer_class = {
510     .class_name = "Writer",
511     .item_name  = writer_get_name,
512     .option     = writer_options,
513     .version    = LIBAVUTIL_VERSION_INT,
514     .child_next = writer_child_next,
515 };
516
517 static void writer_close(WriterContext **wctx)
518 {
519     int i;
520
521     if (!*wctx)
522         return;
523
524     if ((*wctx)->writer->uninit)
525         (*wctx)->writer->uninit(*wctx);
526     for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
527         av_bprint_finalize(&(*wctx)->section_pbuf[i], NULL);
528     if ((*wctx)->writer->priv_class)
529         av_opt_free((*wctx)->priv);
530     av_freep(&((*wctx)->priv));
531     av_opt_free(*wctx);
532     av_freep(wctx);
533 }
534
535 static void bprint_bytes(AVBPrint *bp, const uint8_t *ubuf, size_t ubuf_size)
536 {
537     int i;
538     av_bprintf(bp, "0X");
539     for (i = 0; i < ubuf_size; i++)
540         av_bprintf(bp, "%02X", ubuf[i]);
541 }
542
543
544 static int writer_open(WriterContext **wctx, const Writer *writer, const char *args,
545                        const struct section *sections, int nb_sections)
546 {
547     int i, ret = 0;
548
549     if (!(*wctx = av_mallocz(sizeof(WriterContext)))) {
550         ret = AVERROR(ENOMEM);
551         goto fail;
552     }
553
554     if (!((*wctx)->priv = av_mallocz(writer->priv_size))) {
555         ret = AVERROR(ENOMEM);
556         goto fail;
557     }
558
559     (*wctx)->class = &writer_class;
560     (*wctx)->writer = writer;
561     (*wctx)->level = -1;
562     (*wctx)->sections = sections;
563     (*wctx)->nb_sections = nb_sections;
564
565     av_opt_set_defaults(*wctx);
566
567     if (writer->priv_class) {
568         void *priv_ctx = (*wctx)->priv;
569         *((const AVClass **)priv_ctx) = writer->priv_class;
570         av_opt_set_defaults(priv_ctx);
571     }
572
573     /* convert options to dictionary */
574     if (args) {
575         AVDictionary *opts = NULL;
576         AVDictionaryEntry *opt = NULL;
577
578         if ((ret = av_dict_parse_string(&opts, args, "=", ":", 0)) < 0) {
579             av_log(*wctx, AV_LOG_ERROR, "Failed to parse option string '%s' provided to writer context\n", args);
580             av_dict_free(&opts);
581             goto fail;
582         }
583
584         while ((opt = av_dict_get(opts, "", opt, AV_DICT_IGNORE_SUFFIX))) {
585             if ((ret = av_opt_set(*wctx, opt->key, opt->value, AV_OPT_SEARCH_CHILDREN)) < 0) {
586                 av_log(*wctx, AV_LOG_ERROR, "Failed to set option '%s' with value '%s' provided to writer context\n",
587                        opt->key, opt->value);
588                 av_dict_free(&opts);
589                 goto fail;
590             }
591         }
592
593         av_dict_free(&opts);
594     }
595
596     /* validate replace string */
597     {
598         const uint8_t *p = (*wctx)->string_validation_replacement;
599         const uint8_t *endp = p + strlen(p);
600         while (*p) {
601             const uint8_t *p0 = p;
602             int32_t code;
603             ret = av_utf8_decode(&code, &p, endp, (*wctx)->string_validation_utf8_flags);
604             if (ret < 0) {
605                 AVBPrint bp;
606                 av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
607                 bprint_bytes(&bp, p0, p-p0),
608                     av_log(wctx, AV_LOG_ERROR,
609                            "Invalid UTF8 sequence %s found in string validation replace '%s'\n",
610                            bp.str, (*wctx)->string_validation_replacement);
611                 return ret;
612             }
613         }
614     }
615
616     for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
617         av_bprint_init(&(*wctx)->section_pbuf[i], 1, AV_BPRINT_SIZE_UNLIMITED);
618
619     if ((*wctx)->writer->init)
620         ret = (*wctx)->writer->init(*wctx);
621     if (ret < 0)
622         goto fail;
623
624     return 0;
625
626 fail:
627     writer_close(wctx);
628     return ret;
629 }
630
631 static inline void writer_print_section_header(WriterContext *wctx,
632                                                int section_id)
633 {
634     int parent_section_id;
635     wctx->level++;
636     av_assert0(wctx->level < SECTION_MAX_NB_LEVELS);
637     parent_section_id = wctx->level ?
638         (wctx->section[wctx->level-1])->id : SECTION_ID_NONE;
639
640     wctx->nb_item[wctx->level] = 0;
641     wctx->section[wctx->level] = &wctx->sections[section_id];
642
643     if (section_id == SECTION_ID_PACKETS_AND_FRAMES) {
644         wctx->nb_section_packet = wctx->nb_section_frame =
645         wctx->nb_section_packet_frame = 0;
646     } else if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {
647         wctx->nb_section_packet_frame = section_id == SECTION_ID_PACKET ?
648             wctx->nb_section_packet : wctx->nb_section_frame;
649     }
650
651     if (wctx->writer->print_section_header)
652         wctx->writer->print_section_header(wctx);
653 }
654
655 static inline void writer_print_section_footer(WriterContext *wctx)
656 {
657     int section_id = wctx->section[wctx->level]->id;
658     int parent_section_id = wctx->level ?
659         wctx->section[wctx->level-1]->id : SECTION_ID_NONE;
660
661     if (parent_section_id != SECTION_ID_NONE)
662         wctx->nb_item[wctx->level-1]++;
663     if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {
664         if (section_id == SECTION_ID_PACKET) wctx->nb_section_packet++;
665         else                                     wctx->nb_section_frame++;
666     }
667     if (wctx->writer->print_section_footer)
668         wctx->writer->print_section_footer(wctx);
669     wctx->level--;
670 }
671
672 static inline void writer_print_integer(WriterContext *wctx,
673                                         const char *key, long long int val)
674 {
675     const struct section *section = wctx->section[wctx->level];
676
677     if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
678         wctx->writer->print_integer(wctx, key, val);
679         wctx->nb_item[wctx->level]++;
680     }
681 }
682
683 static inline int validate_string(WriterContext *wctx, char **dstp, const char *src)
684 {
685     const uint8_t *p, *endp;
686     AVBPrint dstbuf;
687     int invalid_chars_nb = 0, ret = 0;
688
689     av_bprint_init(&dstbuf, 0, AV_BPRINT_SIZE_UNLIMITED);
690
691     endp = src + strlen(src);
692     for (p = (uint8_t *)src; *p;) {
693         uint32_t code;
694         int invalid = 0;
695         const uint8_t *p0 = p;
696
697         if (av_utf8_decode(&code, &p, endp, wctx->string_validation_utf8_flags) < 0) {
698             AVBPrint bp;
699             av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
700             bprint_bytes(&bp, p0, p-p0);
701             av_log(wctx, AV_LOG_DEBUG,
702                    "Invalid UTF-8 sequence %s found in string '%s'\n", bp.str, src);
703             invalid = 1;
704         }
705
706         if (invalid) {
707             invalid_chars_nb++;
708
709             switch (wctx->string_validation) {
710             case WRITER_STRING_VALIDATION_FAIL:
711                 av_log(wctx, AV_LOG_ERROR,
712                        "Invalid UTF-8 sequence found in string '%s'\n", src);
713                 ret = AVERROR_INVALIDDATA;
714                 goto end;
715                 break;
716
717             case WRITER_STRING_VALIDATION_REPLACE:
718                 av_bprintf(&dstbuf, "%s", wctx->string_validation_replacement);
719                 break;
720             }
721         }
722
723         if (!invalid || wctx->string_validation == WRITER_STRING_VALIDATION_IGNORE)
724             av_bprint_append_data(&dstbuf, p0, p-p0);
725     }
726
727     if (invalid_chars_nb && wctx->string_validation == WRITER_STRING_VALIDATION_REPLACE) {
728         av_log(wctx, AV_LOG_WARNING,
729                "%d invalid UTF-8 sequence(s) found in string '%s', replaced with '%s'\n",
730                invalid_chars_nb, src, wctx->string_validation_replacement);
731     }
732
733 end:
734     av_bprint_finalize(&dstbuf, dstp);
735     return ret;
736 }
737
738 #define PRINT_STRING_OPT      1
739 #define PRINT_STRING_VALIDATE 2
740
741 static inline int writer_print_string(WriterContext *wctx,
742                                       const char *key, const char *val, int flags)
743 {
744     const struct section *section = wctx->section[wctx->level];
745     int ret = 0;
746
747     if ((flags & PRINT_STRING_OPT)
748         && !(wctx->writer->flags & WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS))
749         return 0;
750
751     if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
752         if (flags & PRINT_STRING_VALIDATE) {
753             char *key1 = NULL, *val1 = NULL;
754             ret = validate_string(wctx, &key1, key);
755             if (ret < 0) goto end;
756             ret = validate_string(wctx, &val1, val);
757             if (ret < 0) goto end;
758             wctx->writer->print_string(wctx, key1, val1);
759         end:
760             if (ret < 0) {
761                 av_log(wctx, AV_LOG_ERROR,
762                        "Invalid key=value string combination %s=%s in section %s\n",
763                        key, val, section->unique_name);
764             }
765             av_free(key1);
766             av_free(val1);
767         } else {
768             wctx->writer->print_string(wctx, key, val);
769         }
770
771         wctx->nb_item[wctx->level]++;
772     }
773
774     return ret;
775 }
776
777 static inline void writer_print_rational(WriterContext *wctx,
778                                          const char *key, AVRational q, char sep)
779 {
780     AVBPrint buf;
781     av_bprint_init(&buf, 0, AV_BPRINT_SIZE_AUTOMATIC);
782     av_bprintf(&buf, "%d%c%d", q.num, sep, q.den);
783     writer_print_string(wctx, key, buf.str, 0);
784 }
785
786 static void writer_print_time(WriterContext *wctx, const char *key,
787                               int64_t ts, const AVRational *time_base, int is_duration)
788 {
789     char buf[128];
790
791     if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
792         writer_print_string(wctx, key, "N/A", PRINT_STRING_OPT);
793     } else {
794         double d = ts * av_q2d(*time_base);
795         struct unit_value uv;
796         uv.val.d = d;
797         uv.unit = unit_second_str;
798         value_string(buf, sizeof(buf), uv);
799         writer_print_string(wctx, key, buf, 0);
800     }
801 }
802
803 static void writer_print_ts(WriterContext *wctx, const char *key, int64_t ts, int is_duration)
804 {
805     if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
806         writer_print_string(wctx, key, "N/A", PRINT_STRING_OPT);
807     } else {
808         writer_print_integer(wctx, key, ts);
809     }
810 }
811
812 static void writer_print_data(WriterContext *wctx, const char *name,
813                               uint8_t *data, int size)
814 {
815     AVBPrint bp;
816     int offset = 0, l, i;
817
818     av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
819     av_bprintf(&bp, "\n");
820     while (size) {
821         av_bprintf(&bp, "%08x: ", offset);
822         l = FFMIN(size, 16);
823         for (i = 0; i < l; i++) {
824             av_bprintf(&bp, "%02x", data[i]);
825             if (i & 1)
826                 av_bprintf(&bp, " ");
827         }
828         av_bprint_chars(&bp, ' ', 41 - 2 * i - i / 2);
829         for (i = 0; i < l; i++)
830             av_bprint_chars(&bp, data[i] - 32U < 95 ? data[i] : '.', 1);
831         av_bprintf(&bp, "\n");
832         offset += l;
833         data   += l;
834         size   -= l;
835     }
836     writer_print_string(wctx, name, bp.str, 0);
837     av_bprint_finalize(&bp, NULL);
838 }
839
840 static void writer_print_data_hash(WriterContext *wctx, const char *name,
841                                    uint8_t *data, int size)
842 {
843     char *p, buf[AV_HASH_MAX_SIZE * 2 + 64] = { 0 };
844
845     if (!hash)
846         return;
847     av_hash_init(hash);
848     av_hash_update(hash, data, size);
849     snprintf(buf, sizeof(buf), "%s:", av_hash_get_name(hash));
850     p = buf + strlen(buf);
851     av_hash_final_hex(hash, p, buf + sizeof(buf) - p);
852     writer_print_string(wctx, name, buf, 0);
853 }
854
855 static void writer_print_integers(WriterContext *wctx, const char *name,
856                                   uint8_t *data, int size, const char *format,
857                                   int columns, int bytes, int offset_add)
858 {
859     AVBPrint bp;
860     int offset = 0, l, i;
861
862     av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
863     av_bprintf(&bp, "\n");
864     while (size) {
865         av_bprintf(&bp, "%08x: ", offset);
866         l = FFMIN(size, columns);
867         for (i = 0; i < l; i++) {
868             if      (bytes == 1) av_bprintf(&bp, format, *data);
869             else if (bytes == 2) av_bprintf(&bp, format, AV_RN16(data));
870             else if (bytes == 4) av_bprintf(&bp, format, AV_RN32(data));
871             data += bytes;
872             size --;
873         }
874         av_bprintf(&bp, "\n");
875         offset += offset_add;
876     }
877     writer_print_string(wctx, name, bp.str, 0);
878     av_bprint_finalize(&bp, NULL);
879 }
880
881 #define MAX_REGISTERED_WRITERS_NB 64
882
883 static const Writer *registered_writers[MAX_REGISTERED_WRITERS_NB + 1];
884
885 static int writer_register(const Writer *writer)
886 {
887     static int next_registered_writer_idx = 0;
888
889     if (next_registered_writer_idx == MAX_REGISTERED_WRITERS_NB)
890         return AVERROR(ENOMEM);
891
892     registered_writers[next_registered_writer_idx++] = writer;
893     return 0;
894 }
895
896 static const Writer *writer_get_by_name(const char *name)
897 {
898     int i;
899
900     for (i = 0; registered_writers[i]; i++)
901         if (!strcmp(registered_writers[i]->name, name))
902             return registered_writers[i];
903
904     return NULL;
905 }
906
907
908 /* WRITERS */
909
910 #define DEFINE_WRITER_CLASS(name)                   \
911 static const char *name##_get_name(void *ctx)       \
912 {                                                   \
913     return #name ;                                  \
914 }                                                   \
915 static const AVClass name##_class = {               \
916     .class_name = #name,                            \
917     .item_name  = name##_get_name,                  \
918     .option     = name##_options                    \
919 }
920
921 /* Default output */
922
923 typedef struct DefaultContext {
924     const AVClass *class;
925     int nokey;
926     int noprint_wrappers;
927     int nested_section[SECTION_MAX_NB_LEVELS];
928 } DefaultContext;
929
930 #undef OFFSET
931 #define OFFSET(x) offsetof(DefaultContext, x)
932
933 static const AVOption default_options[] = {
934     { "noprint_wrappers", "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
935     { "nw",               "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
936     { "nokey",          "force no key printing",     OFFSET(nokey),          AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
937     { "nk",             "force no key printing",     OFFSET(nokey),          AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
938     {NULL},
939 };
940
941 DEFINE_WRITER_CLASS(default);
942
943 /* lame uppercasing routine, assumes the string is lower case ASCII */
944 static inline char *upcase_string(char *dst, size_t dst_size, const char *src)
945 {
946     int i;
947     for (i = 0; src[i] && i < dst_size-1; i++)
948         dst[i] = av_toupper(src[i]);
949     dst[i] = 0;
950     return dst;
951 }
952
953 static void default_print_section_header(WriterContext *wctx)
954 {
955     DefaultContext *def = wctx->priv;
956     char buf[32];
957     const struct section *section = wctx->section[wctx->level];
958     const struct section *parent_section = wctx->level ?
959         wctx->section[wctx->level-1] : NULL;
960
961     av_bprint_clear(&wctx->section_pbuf[wctx->level]);
962     if (parent_section &&
963         !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
964         def->nested_section[wctx->level] = 1;
965         av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
966                    wctx->section_pbuf[wctx->level-1].str,
967                    upcase_string(buf, sizeof(buf),
968                                  av_x_if_null(section->element_name, section->name)));
969     }
970
971     if (def->noprint_wrappers || def->nested_section[wctx->level])
972         return;
973
974     if (!(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
975         printf("[%s]\n", upcase_string(buf, sizeof(buf), section->name));
976 }
977
978 static void default_print_section_footer(WriterContext *wctx)
979 {
980     DefaultContext *def = wctx->priv;
981     const struct section *section = wctx->section[wctx->level];
982     char buf[32];
983
984     if (def->noprint_wrappers || def->nested_section[wctx->level])
985         return;
986
987     if (!(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
988         printf("[/%s]\n", upcase_string(buf, sizeof(buf), section->name));
989 }
990
991 static void default_print_str(WriterContext *wctx, const char *key, const char *value)
992 {
993     DefaultContext *def = wctx->priv;
994
995     if (!def->nokey)
996         printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
997     printf("%s\n", value);
998 }
999
1000 static void default_print_int(WriterContext *wctx, const char *key, long long int value)
1001 {
1002     DefaultContext *def = wctx->priv;
1003
1004     if (!def->nokey)
1005         printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
1006     printf("%lld\n", value);
1007 }
1008
1009 static const Writer default_writer = {
1010     .name                  = "default",
1011     .priv_size             = sizeof(DefaultContext),
1012     .print_section_header  = default_print_section_header,
1013     .print_section_footer  = default_print_section_footer,
1014     .print_integer         = default_print_int,
1015     .print_string          = default_print_str,
1016     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
1017     .priv_class            = &default_class,
1018 };
1019
1020 /* Compact output */
1021
1022 /**
1023  * Apply C-language-like string escaping.
1024  */
1025 static const char *c_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
1026 {
1027     const char *p;
1028
1029     for (p = src; *p; p++) {
1030         switch (*p) {
1031         case '\b': av_bprintf(dst, "%s", "\\b");  break;
1032         case '\f': av_bprintf(dst, "%s", "\\f");  break;
1033         case '\n': av_bprintf(dst, "%s", "\\n");  break;
1034         case '\r': av_bprintf(dst, "%s", "\\r");  break;
1035         case '\\': av_bprintf(dst, "%s", "\\\\"); break;
1036         default:
1037             if (*p == sep)
1038                 av_bprint_chars(dst, '\\', 1);
1039             av_bprint_chars(dst, *p, 1);
1040         }
1041     }
1042     return dst->str;
1043 }
1044
1045 /**
1046  * Quote fields containing special characters, check RFC4180.
1047  */
1048 static const char *csv_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
1049 {
1050     char meta_chars[] = { sep, '"', '\n', '\r', '\0' };
1051     int needs_quoting = !!src[strcspn(src, meta_chars)];
1052
1053     if (needs_quoting)
1054         av_bprint_chars(dst, '"', 1);
1055
1056     for (; *src; src++) {
1057         if (*src == '"')
1058             av_bprint_chars(dst, '"', 1);
1059         av_bprint_chars(dst, *src, 1);
1060     }
1061     if (needs_quoting)
1062         av_bprint_chars(dst, '"', 1);
1063     return dst->str;
1064 }
1065
1066 static const char *none_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
1067 {
1068     return src;
1069 }
1070
1071 typedef struct CompactContext {
1072     const AVClass *class;
1073     char *item_sep_str;
1074     char item_sep;
1075     int nokey;
1076     int print_section;
1077     char *escape_mode_str;
1078     const char * (*escape_str)(AVBPrint *dst, const char *src, const char sep, void *log_ctx);
1079     int nested_section[SECTION_MAX_NB_LEVELS];
1080     int has_nested_elems[SECTION_MAX_NB_LEVELS];
1081     int terminate_line[SECTION_MAX_NB_LEVELS];
1082 } CompactContext;
1083
1084 #undef OFFSET
1085 #define OFFSET(x) offsetof(CompactContext, x)
1086
1087 static const AVOption compact_options[]= {
1088     {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  0, 0 },
1089     {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  0, 0 },
1090     {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=0},    0,        1        },
1091     {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=0},    0,        1        },
1092     {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  0, 0 },
1093     {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  0, 0 },
1094     {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1095     {"p",             "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1096     {NULL},
1097 };
1098
1099 DEFINE_WRITER_CLASS(compact);
1100
1101 static av_cold int compact_init(WriterContext *wctx)
1102 {
1103     CompactContext *compact = wctx->priv;
1104
1105     if (strlen(compact->item_sep_str) != 1) {
1106         av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
1107                compact->item_sep_str);
1108         return AVERROR(EINVAL);
1109     }
1110     compact->item_sep = compact->item_sep_str[0];
1111
1112     if      (!strcmp(compact->escape_mode_str, "none")) compact->escape_str = none_escape_str;
1113     else if (!strcmp(compact->escape_mode_str, "c"   )) compact->escape_str = c_escape_str;
1114     else if (!strcmp(compact->escape_mode_str, "csv" )) compact->escape_str = csv_escape_str;
1115     else {
1116         av_log(wctx, AV_LOG_ERROR, "Unknown escape mode '%s'\n", compact->escape_mode_str);
1117         return AVERROR(EINVAL);
1118     }
1119
1120     return 0;
1121 }
1122
1123 static void compact_print_section_header(WriterContext *wctx)
1124 {
1125     CompactContext *compact = wctx->priv;
1126     const struct section *section = wctx->section[wctx->level];
1127     const struct section *parent_section = wctx->level ?
1128         wctx->section[wctx->level-1] : NULL;
1129     compact->terminate_line[wctx->level] = 1;
1130     compact->has_nested_elems[wctx->level] = 0;
1131
1132     av_bprint_clear(&wctx->section_pbuf[wctx->level]);
1133     if (!(section->flags & SECTION_FLAG_IS_ARRAY) && parent_section &&
1134         !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
1135         compact->nested_section[wctx->level] = 1;
1136         compact->has_nested_elems[wctx->level-1] = 1;
1137         av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
1138                    wctx->section_pbuf[wctx->level-1].str,
1139                    (char *)av_x_if_null(section->element_name, section->name));
1140         wctx->nb_item[wctx->level] = wctx->nb_item[wctx->level-1];
1141     } else {
1142         if (parent_section && compact->has_nested_elems[wctx->level-1] &&
1143             (section->flags & SECTION_FLAG_IS_ARRAY)) {
1144             compact->terminate_line[wctx->level-1] = 0;
1145             printf("\n");
1146         }
1147         if (compact->print_section &&
1148             !(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
1149             printf("%s%c", section->name, compact->item_sep);
1150     }
1151 }
1152
1153 static void compact_print_section_footer(WriterContext *wctx)
1154 {
1155     CompactContext *compact = wctx->priv;
1156
1157     if (!compact->nested_section[wctx->level] &&
1158         compact->terminate_line[wctx->level] &&
1159         !(wctx->section[wctx->level]->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
1160         printf("\n");
1161 }
1162
1163 static void compact_print_str(WriterContext *wctx, const char *key, const char *value)
1164 {
1165     CompactContext *compact = wctx->priv;
1166     AVBPrint buf;
1167
1168     if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
1169     if (!compact->nokey)
1170         printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
1171     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1172     printf("%s", compact->escape_str(&buf, value, compact->item_sep, wctx));
1173     av_bprint_finalize(&buf, NULL);
1174 }
1175
1176 static void compact_print_int(WriterContext *wctx, const char *key, long long int value)
1177 {
1178     CompactContext *compact = wctx->priv;
1179
1180     if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
1181     if (!compact->nokey)
1182         printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
1183     printf("%lld", value);
1184 }
1185
1186 static const Writer compact_writer = {
1187     .name                 = "compact",
1188     .priv_size            = sizeof(CompactContext),
1189     .init                 = compact_init,
1190     .print_section_header = compact_print_section_header,
1191     .print_section_footer = compact_print_section_footer,
1192     .print_integer        = compact_print_int,
1193     .print_string         = compact_print_str,
1194     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
1195     .priv_class           = &compact_class,
1196 };
1197
1198 /* CSV output */
1199
1200 #undef OFFSET
1201 #define OFFSET(x) offsetof(CompactContext, x)
1202
1203 static const AVOption csv_options[] = {
1204     {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str=","},  0, 0 },
1205     {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str=","},  0, 0 },
1206     {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1207     {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1208     {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, 0, 0 },
1209     {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, 0, 0 },
1210     {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1211     {"p",             "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1212     {NULL},
1213 };
1214
1215 DEFINE_WRITER_CLASS(csv);
1216
1217 static const Writer csv_writer = {
1218     .name                 = "csv",
1219     .priv_size            = sizeof(CompactContext),
1220     .init                 = compact_init,
1221     .print_section_header = compact_print_section_header,
1222     .print_section_footer = compact_print_section_footer,
1223     .print_integer        = compact_print_int,
1224     .print_string         = compact_print_str,
1225     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
1226     .priv_class           = &csv_class,
1227 };
1228
1229 /* Flat output */
1230
1231 typedef struct FlatContext {
1232     const AVClass *class;
1233     const char *sep_str;
1234     char sep;
1235     int hierarchical;
1236 } FlatContext;
1237
1238 #undef OFFSET
1239 #define OFFSET(x) offsetof(FlatContext, x)
1240
1241 static const AVOption flat_options[]= {
1242     {"sep_char", "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  0, 0 },
1243     {"s",        "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  0, 0 },
1244     {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
1245     {"h",            "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
1246     {NULL},
1247 };
1248
1249 DEFINE_WRITER_CLASS(flat);
1250
1251 static av_cold int flat_init(WriterContext *wctx)
1252 {
1253     FlatContext *flat = wctx->priv;
1254
1255     if (strlen(flat->sep_str) != 1) {
1256         av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
1257                flat->sep_str);
1258         return AVERROR(EINVAL);
1259     }
1260     flat->sep = flat->sep_str[0];
1261
1262     return 0;
1263 }
1264
1265 static const char *flat_escape_key_str(AVBPrint *dst, const char *src, const char sep)
1266 {
1267     const char *p;
1268
1269     for (p = src; *p; p++) {
1270         if (!((*p >= '0' && *p <= '9') ||
1271               (*p >= 'a' && *p <= 'z') ||
1272               (*p >= 'A' && *p <= 'Z')))
1273             av_bprint_chars(dst, '_', 1);
1274         else
1275             av_bprint_chars(dst, *p, 1);
1276     }
1277     return dst->str;
1278 }
1279
1280 static const char *flat_escape_value_str(AVBPrint *dst, const char *src)
1281 {
1282     const char *p;
1283
1284     for (p = src; *p; p++) {
1285         switch (*p) {
1286         case '\n': av_bprintf(dst, "%s", "\\n");  break;
1287         case '\r': av_bprintf(dst, "%s", "\\r");  break;
1288         case '\\': av_bprintf(dst, "%s", "\\\\"); break;
1289         case '"':  av_bprintf(dst, "%s", "\\\""); break;
1290         case '`':  av_bprintf(dst, "%s", "\\`");  break;
1291         case '$':  av_bprintf(dst, "%s", "\\$");  break;
1292         default:   av_bprint_chars(dst, *p, 1);   break;
1293         }
1294     }
1295     return dst->str;
1296 }
1297
1298 static void flat_print_section_header(WriterContext *wctx)
1299 {
1300     FlatContext *flat = wctx->priv;
1301     AVBPrint *buf = &wctx->section_pbuf[wctx->level];
1302     const struct section *section = wctx->section[wctx->level];
1303     const struct section *parent_section = wctx->level ?
1304         wctx->section[wctx->level-1] : NULL;
1305
1306     /* build section header */
1307     av_bprint_clear(buf);
1308     if (!parent_section)
1309         return;
1310     av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
1311
1312     if (flat->hierarchical ||
1313         !(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {
1314         av_bprintf(buf, "%s%s", wctx->section[wctx->level]->name, flat->sep_str);
1315
1316         if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {
1317             int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?
1318                 wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];
1319             av_bprintf(buf, "%d%s", n, flat->sep_str);
1320         }
1321     }
1322 }
1323
1324 static void flat_print_int(WriterContext *wctx, const char *key, long long int value)
1325 {
1326     printf("%s%s=%lld\n", wctx->section_pbuf[wctx->level].str, key, value);
1327 }
1328
1329 static void flat_print_str(WriterContext *wctx, const char *key, const char *value)
1330 {
1331     FlatContext *flat = wctx->priv;
1332     AVBPrint buf;
1333
1334     printf("%s", wctx->section_pbuf[wctx->level].str);
1335     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1336     printf("%s=", flat_escape_key_str(&buf, key, flat->sep));
1337     av_bprint_clear(&buf);
1338     printf("\"%s\"\n", flat_escape_value_str(&buf, value));
1339     av_bprint_finalize(&buf, NULL);
1340 }
1341
1342 static const Writer flat_writer = {
1343     .name                  = "flat",
1344     .priv_size             = sizeof(FlatContext),
1345     .init                  = flat_init,
1346     .print_section_header  = flat_print_section_header,
1347     .print_integer         = flat_print_int,
1348     .print_string          = flat_print_str,
1349     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1350     .priv_class            = &flat_class,
1351 };
1352
1353 /* INI format output */
1354
1355 typedef struct INIContext {
1356     const AVClass *class;
1357     int hierarchical;
1358 } INIContext;
1359
1360 #undef OFFSET
1361 #define OFFSET(x) offsetof(INIContext, x)
1362
1363 static const AVOption ini_options[] = {
1364     {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
1365     {"h",            "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
1366     {NULL},
1367 };
1368
1369 DEFINE_WRITER_CLASS(ini);
1370
1371 static char *ini_escape_str(AVBPrint *dst, const char *src)
1372 {
1373     int i = 0;
1374     char c = 0;
1375
1376     while (c = src[i++]) {
1377         switch (c) {
1378         case '\b': av_bprintf(dst, "%s", "\\b"); break;
1379         case '\f': av_bprintf(dst, "%s", "\\f"); break;
1380         case '\n': av_bprintf(dst, "%s", "\\n"); break;
1381         case '\r': av_bprintf(dst, "%s", "\\r"); break;
1382         case '\t': av_bprintf(dst, "%s", "\\t"); break;
1383         case '\\':
1384         case '#' :
1385         case '=' :
1386         case ':' : av_bprint_chars(dst, '\\', 1);
1387         default:
1388             if ((unsigned char)c < 32)
1389                 av_bprintf(dst, "\\x00%02x", c & 0xff);
1390             else
1391                 av_bprint_chars(dst, c, 1);
1392             break;
1393         }
1394     }
1395     return dst->str;
1396 }
1397
1398 static void ini_print_section_header(WriterContext *wctx)
1399 {
1400     INIContext *ini = wctx->priv;
1401     AVBPrint *buf = &wctx->section_pbuf[wctx->level];
1402     const struct section *section = wctx->section[wctx->level];
1403     const struct section *parent_section = wctx->level ?
1404         wctx->section[wctx->level-1] : NULL;
1405
1406     av_bprint_clear(buf);
1407     if (!parent_section) {
1408         printf("# ffprobe output\n\n");
1409         return;
1410     }
1411
1412     if (wctx->nb_item[wctx->level-1])
1413         printf("\n");
1414
1415     av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
1416     if (ini->hierarchical ||
1417         !(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {
1418         av_bprintf(buf, "%s%s", buf->str[0] ? "." : "", wctx->section[wctx->level]->name);
1419
1420         if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {
1421             int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?
1422                 wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];
1423             av_bprintf(buf, ".%d", n);
1424         }
1425     }
1426
1427     if (!(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER)))
1428         printf("[%s]\n", buf->str);
1429 }
1430
1431 static void ini_print_str(WriterContext *wctx, const char *key, const char *value)
1432 {
1433     AVBPrint buf;
1434
1435     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1436     printf("%s=", ini_escape_str(&buf, key));
1437     av_bprint_clear(&buf);
1438     printf("%s\n", ini_escape_str(&buf, value));
1439     av_bprint_finalize(&buf, NULL);
1440 }
1441
1442 static void ini_print_int(WriterContext *wctx, const char *key, long long int value)
1443 {
1444     printf("%s=%lld\n", key, value);
1445 }
1446
1447 static const Writer ini_writer = {
1448     .name                  = "ini",
1449     .priv_size             = sizeof(INIContext),
1450     .print_section_header  = ini_print_section_header,
1451     .print_integer         = ini_print_int,
1452     .print_string          = ini_print_str,
1453     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1454     .priv_class            = &ini_class,
1455 };
1456
1457 /* JSON output */
1458
1459 typedef struct JSONContext {
1460     const AVClass *class;
1461     int indent_level;
1462     int compact;
1463     const char *item_sep, *item_start_end;
1464 } JSONContext;
1465
1466 #undef OFFSET
1467 #define OFFSET(x) offsetof(JSONContext, x)
1468
1469 static const AVOption json_options[]= {
1470     { "compact", "enable compact output", OFFSET(compact), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
1471     { "c",       "enable compact output", OFFSET(compact), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
1472     { NULL }
1473 };
1474
1475 DEFINE_WRITER_CLASS(json);
1476
1477 static av_cold int json_init(WriterContext *wctx)
1478 {
1479     JSONContext *json = wctx->priv;
1480
1481     json->item_sep       = json->compact ? ", " : ",\n";
1482     json->item_start_end = json->compact ? " "  : "\n";
1483
1484     return 0;
1485 }
1486
1487 static const char *json_escape_str(AVBPrint *dst, const char *src, void *log_ctx)
1488 {
1489     static const char json_escape[] = {'"', '\\', '\b', '\f', '\n', '\r', '\t', 0};
1490     static const char json_subst[]  = {'"', '\\',  'b',  'f',  'n',  'r',  't', 0};
1491     const char *p;
1492
1493     for (p = src; *p; p++) {
1494         char *s = strchr(json_escape, *p);
1495         if (s) {
1496             av_bprint_chars(dst, '\\', 1);
1497             av_bprint_chars(dst, json_subst[s - json_escape], 1);
1498         } else if ((unsigned char)*p < 32) {
1499             av_bprintf(dst, "\\u00%02x", *p & 0xff);
1500         } else {
1501             av_bprint_chars(dst, *p, 1);
1502         }
1503     }
1504     return dst->str;
1505 }
1506
1507 #define JSON_INDENT() printf("%*c", json->indent_level * 4, ' ')
1508
1509 static void json_print_section_header(WriterContext *wctx)
1510 {
1511     JSONContext *json = wctx->priv;
1512     AVBPrint buf;
1513     const struct section *section = wctx->section[wctx->level];
1514     const struct section *parent_section = wctx->level ?
1515         wctx->section[wctx->level-1] : NULL;
1516
1517     if (wctx->level && wctx->nb_item[wctx->level-1])
1518         printf(",\n");
1519
1520     if (section->flags & SECTION_FLAG_IS_WRAPPER) {
1521         printf("{\n");
1522         json->indent_level++;
1523     } else {
1524         av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1525         json_escape_str(&buf, section->name, wctx);
1526         JSON_INDENT();
1527
1528         json->indent_level++;
1529         if (section->flags & SECTION_FLAG_IS_ARRAY) {
1530             printf("\"%s\": [\n", buf.str);
1531         } else if (parent_section && !(parent_section->flags & SECTION_FLAG_IS_ARRAY)) {
1532             printf("\"%s\": {%s", buf.str, json->item_start_end);
1533         } else {
1534             printf("{%s", json->item_start_end);
1535
1536             /* this is required so the parser can distinguish between packets and frames */
1537             if (parent_section && parent_section->id == SECTION_ID_PACKETS_AND_FRAMES) {
1538                 if (!json->compact)
1539                     JSON_INDENT();
1540                 printf("\"type\": \"%s\"", section->name);
1541             }
1542         }
1543         av_bprint_finalize(&buf, NULL);
1544     }
1545 }
1546
1547 static void json_print_section_footer(WriterContext *wctx)
1548 {
1549     JSONContext *json = wctx->priv;
1550     const struct section *section = wctx->section[wctx->level];
1551
1552     if (wctx->level == 0) {
1553         json->indent_level--;
1554         printf("\n}\n");
1555     } else if (section->flags & SECTION_FLAG_IS_ARRAY) {
1556         printf("\n");
1557         json->indent_level--;
1558         JSON_INDENT();
1559         printf("]");
1560     } else {
1561         printf("%s", json->item_start_end);
1562         json->indent_level--;
1563         if (!json->compact)
1564             JSON_INDENT();
1565         printf("}");
1566     }
1567 }
1568
1569 static inline void json_print_item_str(WriterContext *wctx,
1570                                        const char *key, const char *value)
1571 {
1572     AVBPrint buf;
1573
1574     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1575     printf("\"%s\":", json_escape_str(&buf, key,   wctx));
1576     av_bprint_clear(&buf);
1577     printf(" \"%s\"", json_escape_str(&buf, value, wctx));
1578     av_bprint_finalize(&buf, NULL);
1579 }
1580
1581 static void json_print_str(WriterContext *wctx, const char *key, const char *value)
1582 {
1583     JSONContext *json = wctx->priv;
1584     const struct section *parent_section = wctx->level ?
1585         wctx->section[wctx->level-1] : NULL;
1586
1587     if (wctx->nb_item[wctx->level] || (parent_section && parent_section->id == SECTION_ID_PACKETS_AND_FRAMES))
1588         printf("%s", json->item_sep);
1589     if (!json->compact)
1590         JSON_INDENT();
1591     json_print_item_str(wctx, key, value);
1592 }
1593
1594 static void json_print_int(WriterContext *wctx, const char *key, long long int value)
1595 {
1596     JSONContext *json = wctx->priv;
1597     const struct section *parent_section = wctx->level ?
1598         wctx->section[wctx->level-1] : NULL;
1599     AVBPrint buf;
1600
1601     if (wctx->nb_item[wctx->level] || (parent_section && parent_section->id == SECTION_ID_PACKETS_AND_FRAMES))
1602         printf("%s", json->item_sep);
1603     if (!json->compact)
1604         JSON_INDENT();
1605
1606     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1607     printf("\"%s\": %lld", json_escape_str(&buf, key, wctx), value);
1608     av_bprint_finalize(&buf, NULL);
1609 }
1610
1611 static const Writer json_writer = {
1612     .name                 = "json",
1613     .priv_size            = sizeof(JSONContext),
1614     .init                 = json_init,
1615     .print_section_header = json_print_section_header,
1616     .print_section_footer = json_print_section_footer,
1617     .print_integer        = json_print_int,
1618     .print_string         = json_print_str,
1619     .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1620     .priv_class           = &json_class,
1621 };
1622
1623 /* XML output */
1624
1625 typedef struct XMLContext {
1626     const AVClass *class;
1627     int within_tag;
1628     int indent_level;
1629     int fully_qualified;
1630     int xsd_strict;
1631 } XMLContext;
1632
1633 #undef OFFSET
1634 #define OFFSET(x) offsetof(XMLContext, x)
1635
1636 static const AVOption xml_options[] = {
1637     {"fully_qualified", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
1638     {"q",               "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
1639     {"xsd_strict",      "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
1640     {"x",               "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
1641     {NULL},
1642 };
1643
1644 DEFINE_WRITER_CLASS(xml);
1645
1646 static av_cold int xml_init(WriterContext *wctx)
1647 {
1648     XMLContext *xml = wctx->priv;
1649
1650     if (xml->xsd_strict) {
1651         xml->fully_qualified = 1;
1652 #define CHECK_COMPLIANCE(opt, opt_name)                                 \
1653         if (opt) {                                                      \
1654             av_log(wctx, AV_LOG_ERROR,                                  \
1655                    "XSD-compliant output selected but option '%s' was selected, XML output may be non-compliant.\n" \
1656                    "You need to disable such option with '-no%s'\n", opt_name, opt_name); \
1657             return AVERROR(EINVAL);                                     \
1658         }
1659         CHECK_COMPLIANCE(show_private_data, "private");
1660         CHECK_COMPLIANCE(show_value_unit,   "unit");
1661         CHECK_COMPLIANCE(use_value_prefix,  "prefix");
1662
1663         if (do_show_frames && do_show_packets) {
1664             av_log(wctx, AV_LOG_ERROR,
1665                    "Interleaved frames and packets are not allowed in XSD. "
1666                    "Select only one between the -show_frames and the -show_packets options.\n");
1667             return AVERROR(EINVAL);
1668         }
1669     }
1670
1671     return 0;
1672 }
1673
1674 static const char *xml_escape_str(AVBPrint *dst, const char *src, void *log_ctx)
1675 {
1676     const char *p;
1677
1678     for (p = src; *p; p++) {
1679         switch (*p) {
1680         case '&' : av_bprintf(dst, "%s", "&amp;");  break;
1681         case '<' : av_bprintf(dst, "%s", "&lt;");   break;
1682         case '>' : av_bprintf(dst, "%s", "&gt;");   break;
1683         case '"' : av_bprintf(dst, "%s", "&quot;"); break;
1684         case '\'': av_bprintf(dst, "%s", "&apos;"); break;
1685         default: av_bprint_chars(dst, *p, 1);
1686         }
1687     }
1688
1689     return dst->str;
1690 }
1691
1692 #define XML_INDENT() printf("%*c", xml->indent_level * 4, ' ')
1693
1694 static void xml_print_section_header(WriterContext *wctx)
1695 {
1696     XMLContext *xml = wctx->priv;
1697     const struct section *section = wctx->section[wctx->level];
1698     const struct section *parent_section = wctx->level ?
1699         wctx->section[wctx->level-1] : NULL;
1700
1701     if (wctx->level == 0) {
1702         const char *qual = " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' "
1703             "xmlns:ffprobe='http://www.ffmpeg.org/schema/ffprobe' "
1704             "xsi:schemaLocation='http://www.ffmpeg.org/schema/ffprobe ffprobe.xsd'";
1705
1706         printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
1707         printf("<%sffprobe%s>\n",
1708                xml->fully_qualified ? "ffprobe:" : "",
1709                xml->fully_qualified ? qual : "");
1710         return;
1711     }
1712
1713     if (xml->within_tag) {
1714         xml->within_tag = 0;
1715         printf(">\n");
1716     }
1717     if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
1718         xml->indent_level++;
1719     } else {
1720         if (parent_section && (parent_section->flags & SECTION_FLAG_IS_WRAPPER) &&
1721             wctx->level && wctx->nb_item[wctx->level-1])
1722             printf("\n");
1723         xml->indent_level++;
1724
1725         if (section->flags & SECTION_FLAG_IS_ARRAY) {
1726             XML_INDENT(); printf("<%s>\n", section->name);
1727         } else {
1728             XML_INDENT(); printf("<%s ", section->name);
1729             xml->within_tag = 1;
1730         }
1731     }
1732 }
1733
1734 static void xml_print_section_footer(WriterContext *wctx)
1735 {
1736     XMLContext *xml = wctx->priv;
1737     const struct section *section = wctx->section[wctx->level];
1738
1739     if (wctx->level == 0) {
1740         printf("</%sffprobe>\n", xml->fully_qualified ? "ffprobe:" : "");
1741     } else if (xml->within_tag) {
1742         xml->within_tag = 0;
1743         printf("/>\n");
1744         xml->indent_level--;
1745     } else if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
1746         xml->indent_level--;
1747     } else {
1748         XML_INDENT(); printf("</%s>\n", section->name);
1749         xml->indent_level--;
1750     }
1751 }
1752
1753 static void xml_print_str(WriterContext *wctx, const char *key, const char *value)
1754 {
1755     AVBPrint buf;
1756     XMLContext *xml = wctx->priv;
1757     const struct section *section = wctx->section[wctx->level];
1758
1759     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1760
1761     if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
1762         XML_INDENT();
1763         printf("<%s key=\"%s\"",
1764                section->element_name, xml_escape_str(&buf, key, wctx));
1765         av_bprint_clear(&buf);
1766         printf(" value=\"%s\"/>\n", xml_escape_str(&buf, value, wctx));
1767     } else {
1768         if (wctx->nb_item[wctx->level])
1769             printf(" ");
1770         printf("%s=\"%s\"", key, xml_escape_str(&buf, value, wctx));
1771     }
1772
1773     av_bprint_finalize(&buf, NULL);
1774 }
1775
1776 static void xml_print_int(WriterContext *wctx, const char *key, long long int value)
1777 {
1778     if (wctx->nb_item[wctx->level])
1779         printf(" ");
1780     printf("%s=\"%lld\"", key, value);
1781 }
1782
1783 static Writer xml_writer = {
1784     .name                 = "xml",
1785     .priv_size            = sizeof(XMLContext),
1786     .init                 = xml_init,
1787     .print_section_header = xml_print_section_header,
1788     .print_section_footer = xml_print_section_footer,
1789     .print_integer        = xml_print_int,
1790     .print_string         = xml_print_str,
1791     .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1792     .priv_class           = &xml_class,
1793 };
1794
1795 static void writer_register_all(void)
1796 {
1797     static int initialized;
1798
1799     if (initialized)
1800         return;
1801     initialized = 1;
1802
1803     writer_register(&default_writer);
1804     writer_register(&compact_writer);
1805     writer_register(&csv_writer);
1806     writer_register(&flat_writer);
1807     writer_register(&ini_writer);
1808     writer_register(&json_writer);
1809     writer_register(&xml_writer);
1810 }
1811
1812 #define print_fmt(k, f, ...) do {              \
1813     av_bprint_clear(&pbuf);                    \
1814     av_bprintf(&pbuf, f, __VA_ARGS__);         \
1815     writer_print_string(w, k, pbuf.str, 0);    \
1816 } while (0)
1817
1818 #define print_int(k, v)         writer_print_integer(w, k, v)
1819 #define print_q(k, v, s)        writer_print_rational(w, k, v, s)
1820 #define print_str(k, v)         writer_print_string(w, k, v, 0)
1821 #define print_str_opt(k, v)     writer_print_string(w, k, v, PRINT_STRING_OPT)
1822 #define print_str_validate(k, v) writer_print_string(w, k, v, PRINT_STRING_VALIDATE)
1823 #define print_time(k, v, tb)    writer_print_time(w, k, v, tb, 0)
1824 #define print_ts(k, v)          writer_print_ts(w, k, v, 0)
1825 #define print_duration_time(k, v, tb) writer_print_time(w, k, v, tb, 1)
1826 #define print_duration_ts(k, v)       writer_print_ts(w, k, v, 1)
1827 #define print_val(k, v, u) do {                                     \
1828     struct unit_value uv;                                           \
1829     uv.val.i = v;                                                   \
1830     uv.unit = u;                                                    \
1831     writer_print_string(w, k, value_string(val_str, sizeof(val_str), uv), 0); \
1832 } while (0)
1833
1834 #define print_section_header(s) writer_print_section_header(w, s)
1835 #define print_section_footer(s) writer_print_section_footer(w, s)
1836
1837 #define REALLOCZ_ARRAY_STREAM(ptr, cur_n, new_n)                        \
1838 {                                                                       \
1839     ret = av_reallocp_array(&(ptr), (new_n), sizeof(*(ptr)));           \
1840     if (ret < 0)                                                        \
1841         goto end;                                                       \
1842     memset( (ptr) + (cur_n), 0, ((new_n) - (cur_n)) * sizeof(*(ptr)) ); \
1843 }
1844
1845 static inline int show_tags(WriterContext *w, AVDictionary *tags, int section_id)
1846 {
1847     AVDictionaryEntry *tag = NULL;
1848     int ret = 0;
1849
1850     if (!tags)
1851         return 0;
1852     writer_print_section_header(w, section_id);
1853
1854     while ((tag = av_dict_get(tags, "", tag, AV_DICT_IGNORE_SUFFIX))) {
1855         if ((ret = print_str_validate(tag->key, tag->value)) < 0)
1856             break;
1857     }
1858     writer_print_section_footer(w);
1859
1860     return ret;
1861 }
1862
1863 static void print_pkt_side_data(WriterContext *w,
1864                                 AVCodecParameters *par,
1865                                 const AVPacketSideData *side_data,
1866                                 int nb_side_data,
1867                                 SectionID id_data_list,
1868                                 SectionID id_data)
1869 {
1870     int i;
1871
1872     writer_print_section_header(w, id_data_list);
1873     for (i = 0; i < nb_side_data; i++) {
1874         const AVPacketSideData *sd = &side_data[i];
1875         const char *name = av_packet_side_data_name(sd->type);
1876
1877         writer_print_section_header(w, id_data);
1878         print_str("side_data_type", name ? name : "unknown");
1879         if (sd->type == AV_PKT_DATA_DISPLAYMATRIX && sd->size >= 9*4) {
1880             writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);
1881             print_int("rotation", av_display_rotation_get((int32_t *)sd->data));
1882         } else if (sd->type == AV_PKT_DATA_STEREO3D) {
1883             const AVStereo3D *stereo = (AVStereo3D *)sd->data;
1884             print_str("type", av_stereo3d_type_name(stereo->type));
1885             print_int("inverted", !!(stereo->flags & AV_STEREO3D_FLAG_INVERT));
1886         } else if (sd->type == AV_PKT_DATA_SPHERICAL) {
1887             const AVSphericalMapping *spherical = (AVSphericalMapping *)sd->data;
1888             print_str("projection", av_spherical_projection_name(spherical->projection));
1889             if (spherical->projection == AV_SPHERICAL_CUBEMAP) {
1890                 print_int("padding", spherical->padding);
1891             } else if (spherical->projection == AV_SPHERICAL_EQUIRECTANGULAR_TILE) {
1892                 size_t l, t, r, b;
1893                 av_spherical_tile_bounds(spherical, par->width, par->height,
1894                                          &l, &t, &r, &b);
1895                 print_int("bound_left", l);
1896                 print_int("bound_top", t);
1897                 print_int("bound_right", r);
1898                 print_int("bound_bottom", b);
1899             }
1900
1901             print_int("yaw", (double) spherical->yaw / (1 << 16));
1902             print_int("pitch", (double) spherical->pitch / (1 << 16));
1903             print_int("roll", (double) spherical->roll / (1 << 16));
1904         } else if (sd->type == AV_PKT_DATA_SKIP_SAMPLES && sd->size == 10) {
1905             print_int("skip_samples",    AV_RL32(sd->data));
1906             print_int("discard_padding", AV_RL32(sd->data + 4));
1907             print_int("skip_reason",     AV_RL8(sd->data + 8));
1908             print_int("discard_reason",  AV_RL8(sd->data + 9));
1909         } else if (sd->type == AV_PKT_DATA_MASTERING_DISPLAY_METADATA) {
1910             AVMasteringDisplayMetadata *metadata = (AVMasteringDisplayMetadata *)sd->data;
1911
1912             if (metadata->has_primaries) {
1913                 print_q("red_x", metadata->display_primaries[0][0], '/');
1914                 print_q("red_y", metadata->display_primaries[0][1], '/');
1915                 print_q("green_x", metadata->display_primaries[1][0], '/');
1916                 print_q("green_y", metadata->display_primaries[1][1], '/');
1917                 print_q("blue_x", metadata->display_primaries[2][0], '/');
1918                 print_q("blue_y", metadata->display_primaries[2][1], '/');
1919
1920                 print_q("white_point_x", metadata->white_point[0], '/');
1921                 print_q("white_point_y", metadata->white_point[1], '/');
1922             }
1923
1924             if (metadata->has_luminance) {
1925                 print_q("min_luminance", metadata->min_luminance, '/');
1926                 print_q("max_luminance", metadata->max_luminance, '/');
1927             }
1928         } else if (sd->type == AV_PKT_DATA_CONTENT_LIGHT_LEVEL) {
1929             AVContentLightMetadata *metadata = (AVContentLightMetadata *)sd->data;
1930             print_int("max_content", metadata->MaxCLL);
1931             print_int("max_average", metadata->MaxFALL);
1932         } else if (sd->type == AV_PKT_DATA_DOVI_CONF) {
1933             AVDOVIDecoderConfigurationRecord *dovi = (AVDOVIDecoderConfigurationRecord *)sd->data;
1934             print_int("dv_version_major", dovi->dv_version_major);
1935             print_int("dv_version_minor", dovi->dv_version_minor);
1936             print_int("dv_profile", dovi->dv_profile);
1937             print_int("dv_level", dovi->dv_level);
1938             print_int("rpu_present_flag", dovi->rpu_present_flag);
1939             print_int("el_present_flag", dovi->el_present_flag);
1940             print_int("bl_present_flag", dovi->bl_present_flag);
1941             print_int("dv_bl_signal_compatibility_id", dovi->dv_bl_signal_compatibility_id);
1942         }
1943         writer_print_section_footer(w);
1944     }
1945     writer_print_section_footer(w);
1946 }
1947
1948 static void print_color_range(WriterContext *w, enum AVColorRange color_range)
1949 {
1950     const char *val = av_color_range_name(color_range);
1951     if (!val || color_range == AVCOL_RANGE_UNSPECIFIED) {
1952         print_str_opt("color_range", "unknown");
1953     } else {
1954         print_str("color_range", val);
1955     }
1956 }
1957
1958 static void print_color_space(WriterContext *w, enum AVColorSpace color_space)
1959 {
1960     const char *val = av_color_space_name(color_space);
1961     if (!val || color_space == AVCOL_SPC_UNSPECIFIED) {
1962         print_str_opt("color_space", "unknown");
1963     } else {
1964         print_str("color_space", val);
1965     }
1966 }
1967
1968 static void print_primaries(WriterContext *w, enum AVColorPrimaries color_primaries)
1969 {
1970     const char *val = av_color_primaries_name(color_primaries);
1971     if (!val || color_primaries == AVCOL_PRI_UNSPECIFIED) {
1972         print_str_opt("color_primaries", "unknown");
1973     } else {
1974         print_str("color_primaries", val);
1975     }
1976 }
1977
1978 static void print_color_trc(WriterContext *w, enum AVColorTransferCharacteristic color_trc)
1979 {
1980     const char *val = av_color_transfer_name(color_trc);
1981     if (!val || color_trc == AVCOL_TRC_UNSPECIFIED) {
1982         print_str_opt("color_transfer", "unknown");
1983     } else {
1984         print_str("color_transfer", val);
1985     }
1986 }
1987
1988 static void print_chroma_location(WriterContext *w, enum AVChromaLocation chroma_location)
1989 {
1990     const char *val = av_chroma_location_name(chroma_location);
1991     if (!val || chroma_location == AVCHROMA_LOC_UNSPECIFIED) {
1992         print_str_opt("chroma_location", "unspecified");
1993     } else {
1994         print_str("chroma_location", val);
1995     }
1996 }
1997
1998
1999 static void clear_log(int need_lock)
2000 {
2001     int i;
2002
2003     if (need_lock)
2004         pthread_mutex_lock(&log_mutex);
2005     for (i=0; i<log_buffer_size; i++) {
2006         av_freep(&log_buffer[i].context_name);
2007         av_freep(&log_buffer[i].parent_name);
2008         av_freep(&log_buffer[i].log_message);
2009     }
2010     log_buffer_size = 0;
2011     if(need_lock)
2012         pthread_mutex_unlock(&log_mutex);
2013 }
2014
2015 static int show_log(WriterContext *w, int section_ids, int section_id, int log_level)
2016 {
2017     int i;
2018     pthread_mutex_lock(&log_mutex);
2019     if (!log_buffer_size) {
2020         pthread_mutex_unlock(&log_mutex);
2021         return 0;
2022     }
2023     writer_print_section_header(w, section_ids);
2024
2025     for (i=0; i<log_buffer_size; i++) {
2026         if (log_buffer[i].log_level <= log_level) {
2027             writer_print_section_header(w, section_id);
2028             print_str("context", log_buffer[i].context_name);
2029             print_int("level", log_buffer[i].log_level);
2030             print_int("category", log_buffer[i].category);
2031             if (log_buffer[i].parent_name) {
2032                 print_str("parent_context", log_buffer[i].parent_name);
2033                 print_int("parent_category", log_buffer[i].parent_category);
2034             } else {
2035                 print_str_opt("parent_context", "N/A");
2036                 print_str_opt("parent_category", "N/A");
2037             }
2038             print_str("message", log_buffer[i].log_message);
2039             writer_print_section_footer(w);
2040         }
2041     }
2042     clear_log(0);
2043     pthread_mutex_unlock(&log_mutex);
2044
2045     writer_print_section_footer(w);
2046
2047     return 0;
2048 }
2049
2050 static void show_packet(WriterContext *w, InputFile *ifile, AVPacket *pkt, int packet_idx)
2051 {
2052     char val_str[128];
2053     AVStream *st = ifile->streams[pkt->stream_index].st;
2054     AVBPrint pbuf;
2055     const char *s;
2056
2057     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
2058
2059     writer_print_section_header(w, SECTION_ID_PACKET);
2060
2061     s = av_get_media_type_string(st->codecpar->codec_type);
2062     if (s) print_str    ("codec_type", s);
2063     else   print_str_opt("codec_type", "unknown");
2064     print_int("stream_index",     pkt->stream_index);
2065     print_ts  ("pts",             pkt->pts);
2066     print_time("pts_time",        pkt->pts, &st->time_base);
2067     print_ts  ("dts",             pkt->dts);
2068     print_time("dts_time",        pkt->dts, &st->time_base);
2069     print_duration_ts("duration",        pkt->duration);
2070     print_duration_time("duration_time", pkt->duration, &st->time_base);
2071     print_duration_ts("convergence_duration", pkt->convergence_duration);
2072     print_duration_time("convergence_duration_time", pkt->convergence_duration, &st->time_base);
2073     print_val("size",             pkt->size, unit_byte_str);
2074     if (pkt->pos != -1) print_fmt    ("pos", "%"PRId64, pkt->pos);
2075     else                print_str_opt("pos", "N/A");
2076     print_fmt("flags", "%c%c",      pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_',
2077               pkt->flags & AV_PKT_FLAG_DISCARD ? 'D' : '_');
2078
2079     if (pkt->side_data_elems) {
2080         int size;
2081         const uint8_t *side_metadata;
2082
2083         side_metadata = av_packet_get_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, &size);
2084         if (side_metadata && size && do_show_packet_tags) {
2085             AVDictionary *dict = NULL;
2086             if (av_packet_unpack_dictionary(side_metadata, size, &dict) >= 0)
2087                 show_tags(w, dict, SECTION_ID_PACKET_TAGS);
2088             av_dict_free(&dict);
2089         }
2090
2091         print_pkt_side_data(w, st->codecpar, pkt->side_data, pkt->side_data_elems,
2092                             SECTION_ID_PACKET_SIDE_DATA_LIST,
2093                             SECTION_ID_PACKET_SIDE_DATA);
2094     }
2095
2096     if (do_show_data)
2097         writer_print_data(w, "data", pkt->data, pkt->size);
2098     writer_print_data_hash(w, "data_hash", pkt->data, pkt->size);
2099     writer_print_section_footer(w);
2100
2101     av_bprint_finalize(&pbuf, NULL);
2102     fflush(stdout);
2103 }
2104
2105 static void show_subtitle(WriterContext *w, AVSubtitle *sub, AVStream *stream,
2106                           AVFormatContext *fmt_ctx)
2107 {
2108     AVBPrint pbuf;
2109
2110     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
2111
2112     writer_print_section_header(w, SECTION_ID_SUBTITLE);
2113
2114     print_str ("media_type",         "subtitle");
2115     print_ts  ("pts",                 sub->pts);
2116     print_time("pts_time",            sub->pts, &AV_TIME_BASE_Q);
2117     print_int ("format",              sub->format);
2118     print_int ("start_display_time",  sub->start_display_time);
2119     print_int ("end_display_time",    sub->end_display_time);
2120     print_int ("num_rects",           sub->num_rects);
2121
2122     writer_print_section_footer(w);
2123
2124     av_bprint_finalize(&pbuf, NULL);
2125     fflush(stdout);
2126 }
2127
2128 static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream,
2129                        AVFormatContext *fmt_ctx)
2130 {
2131     AVBPrint pbuf;
2132     char val_str[128];
2133     const char *s;
2134     int i;
2135
2136     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
2137
2138     writer_print_section_header(w, SECTION_ID_FRAME);
2139
2140     s = av_get_media_type_string(stream->codecpar->codec_type);
2141     if (s) print_str    ("media_type", s);
2142     else   print_str_opt("media_type", "unknown");
2143     print_int("stream_index",           stream->index);
2144     print_int("key_frame",              frame->key_frame);
2145     print_ts  ("pkt_pts",               frame->pts);
2146     print_time("pkt_pts_time",          frame->pts, &stream->time_base);
2147     print_ts  ("pkt_dts",               frame->pkt_dts);
2148     print_time("pkt_dts_time",          frame->pkt_dts, &stream->time_base);
2149     print_ts  ("best_effort_timestamp", frame->best_effort_timestamp);
2150     print_time("best_effort_timestamp_time", frame->best_effort_timestamp, &stream->time_base);
2151     print_duration_ts  ("pkt_duration",      frame->pkt_duration);
2152     print_duration_time("pkt_duration_time", frame->pkt_duration, &stream->time_base);
2153     if (frame->pkt_pos != -1) print_fmt    ("pkt_pos", "%"PRId64, frame->pkt_pos);
2154     else                      print_str_opt("pkt_pos", "N/A");
2155     if (frame->pkt_size != -1) print_val    ("pkt_size", frame->pkt_size, unit_byte_str);
2156     else                       print_str_opt("pkt_size", "N/A");
2157
2158     switch (stream->codecpar->codec_type) {
2159         AVRational sar;
2160
2161     case AVMEDIA_TYPE_VIDEO:
2162         print_int("width",                  frame->width);
2163         print_int("height",                 frame->height);
2164         s = av_get_pix_fmt_name(frame->format);
2165         if (s) print_str    ("pix_fmt", s);
2166         else   print_str_opt("pix_fmt", "unknown");
2167         sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, frame);
2168         if (sar.num) {
2169             print_q("sample_aspect_ratio", sar, ':');
2170         } else {
2171             print_str_opt("sample_aspect_ratio", "N/A");
2172         }
2173         print_fmt("pict_type",              "%c", av_get_picture_type_char(frame->pict_type));
2174         print_int("coded_picture_number",   frame->coded_picture_number);
2175         print_int("display_picture_number", frame->display_picture_number);
2176         print_int("interlaced_frame",       frame->interlaced_frame);
2177         print_int("top_field_first",        frame->top_field_first);
2178         print_int("repeat_pict",            frame->repeat_pict);
2179
2180         print_color_range(w, frame->color_range);
2181         print_color_space(w, frame->colorspace);
2182         print_primaries(w, frame->color_primaries);
2183         print_color_trc(w, frame->color_trc);
2184         print_chroma_location(w, frame->chroma_location);
2185         break;
2186
2187     case AVMEDIA_TYPE_AUDIO:
2188         s = av_get_sample_fmt_name(frame->format);
2189         if (s) print_str    ("sample_fmt", s);
2190         else   print_str_opt("sample_fmt", "unknown");
2191         print_int("nb_samples",         frame->nb_samples);
2192         print_int("channels", frame->channels);
2193         if (frame->channel_layout) {
2194             av_bprint_clear(&pbuf);
2195             av_bprint_channel_layout(&pbuf, frame->channels,
2196                                      frame->channel_layout);
2197             print_str    ("channel_layout", pbuf.str);
2198         } else
2199             print_str_opt("channel_layout", "unknown");
2200         break;
2201     }
2202     if (do_show_frame_tags)
2203         show_tags(w, frame->metadata, SECTION_ID_FRAME_TAGS);
2204     if (do_show_log)
2205         show_log(w, SECTION_ID_FRAME_LOGS, SECTION_ID_FRAME_LOG, do_show_log);
2206     if (frame->nb_side_data) {
2207         writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA_LIST);
2208         for (i = 0; i < frame->nb_side_data; i++) {
2209             AVFrameSideData *sd = frame->side_data[i];
2210             const char *name;
2211
2212             writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA);
2213             name = av_frame_side_data_name(sd->type);
2214             print_str("side_data_type", name ? name : "unknown");
2215             if (sd->type == AV_FRAME_DATA_DISPLAYMATRIX && sd->size >= 9*4) {
2216                 writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);
2217                 print_int("rotation", av_display_rotation_get((int32_t *)sd->data));
2218             } else if (sd->type == AV_FRAME_DATA_GOP_TIMECODE && sd->size >= 8) {
2219                 char tcbuf[AV_TIMECODE_STR_SIZE];
2220                 av_timecode_make_mpeg_tc_string(tcbuf, *(int64_t *)(sd->data));
2221                 print_str("timecode", tcbuf);
2222             } else if (sd->type == AV_FRAME_DATA_S12M_TIMECODE && sd->size == 16) {
2223                 uint32_t *tc = (uint32_t*)sd->data;
2224                 int m = FFMIN(tc[0],3);
2225                 writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA_TIMECODE_LIST);
2226                 for (int j = 1; j <= m ; j++) {
2227                     char tcbuf[AV_TIMECODE_STR_SIZE];
2228                     av_timecode_make_smpte_tc_string2(tcbuf, stream->avg_frame_rate, tc[j], 0, 0);
2229                     writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA_TIMECODE);
2230                     print_str("value", tcbuf);
2231                     writer_print_section_footer(w);
2232                 }
2233                 writer_print_section_footer(w);
2234             } else if (sd->type == AV_FRAME_DATA_MASTERING_DISPLAY_METADATA) {
2235                 AVMasteringDisplayMetadata *metadata = (AVMasteringDisplayMetadata *)sd->data;
2236
2237                 if (metadata->has_primaries) {
2238                     print_q("red_x", metadata->display_primaries[0][0], '/');
2239                     print_q("red_y", metadata->display_primaries[0][1], '/');
2240                     print_q("green_x", metadata->display_primaries[1][0], '/');
2241                     print_q("green_y", metadata->display_primaries[1][1], '/');
2242                     print_q("blue_x", metadata->display_primaries[2][0], '/');
2243                     print_q("blue_y", metadata->display_primaries[2][1], '/');
2244
2245                     print_q("white_point_x", metadata->white_point[0], '/');
2246                     print_q("white_point_y", metadata->white_point[1], '/');
2247                 }
2248
2249                 if (metadata->has_luminance) {
2250                     print_q("min_luminance", metadata->min_luminance, '/');
2251                     print_q("max_luminance", metadata->max_luminance, '/');
2252                 }
2253             } else if (sd->type == AV_FRAME_DATA_CONTENT_LIGHT_LEVEL) {
2254                 AVContentLightMetadata *metadata = (AVContentLightMetadata *)sd->data;
2255                 print_int("max_content", metadata->MaxCLL);
2256                 print_int("max_average", metadata->MaxFALL);
2257             } else if (sd->type == AV_FRAME_DATA_ICC_PROFILE) {
2258                 AVDictionaryEntry *tag = av_dict_get(sd->metadata, "name", NULL, AV_DICT_MATCH_CASE);
2259                 if (tag)
2260                     print_str(tag->key, tag->value);
2261                 print_int("size", sd->size);
2262             }
2263             writer_print_section_footer(w);
2264         }
2265         writer_print_section_footer(w);
2266     }
2267
2268     writer_print_section_footer(w);
2269
2270     av_bprint_finalize(&pbuf, NULL);
2271     fflush(stdout);
2272 }
2273
2274 static av_always_inline int process_frame(WriterContext *w,
2275                                           InputFile *ifile,
2276                                           AVFrame *frame, AVPacket *pkt,
2277                                           int *packet_new)
2278 {
2279     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2280     AVCodecContext *dec_ctx = ifile->streams[pkt->stream_index].dec_ctx;
2281     AVCodecParameters *par = ifile->streams[pkt->stream_index].st->codecpar;
2282     AVSubtitle sub;
2283     int ret = 0, got_frame = 0;
2284
2285     clear_log(1);
2286     if (dec_ctx && dec_ctx->codec) {
2287         switch (par->codec_type) {
2288         case AVMEDIA_TYPE_VIDEO:
2289         case AVMEDIA_TYPE_AUDIO:
2290             if (*packet_new) {
2291                 ret = avcodec_send_packet(dec_ctx, pkt);
2292                 if (ret == AVERROR(EAGAIN)) {
2293                     ret = 0;
2294                 } else if (ret >= 0 || ret == AVERROR_EOF) {
2295                     ret = 0;
2296                     *packet_new = 0;
2297                 }
2298             }
2299             if (ret >= 0) {
2300                 ret = avcodec_receive_frame(dec_ctx, frame);
2301                 if (ret >= 0) {
2302                     got_frame = 1;
2303                 } else if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
2304                     ret = 0;
2305                 }
2306             }
2307             break;
2308
2309         case AVMEDIA_TYPE_SUBTITLE:
2310             if (*packet_new)
2311                 ret = avcodec_decode_subtitle2(dec_ctx, &sub, &got_frame, pkt);
2312             *packet_new = 0;
2313             break;
2314         default:
2315             *packet_new = 0;
2316         }
2317     } else {
2318         *packet_new = 0;
2319     }
2320
2321     if (ret < 0)
2322         return ret;
2323     if (got_frame) {
2324         int is_sub = (par->codec_type == AVMEDIA_TYPE_SUBTITLE);
2325         nb_streams_frames[pkt->stream_index]++;
2326         if (do_show_frames)
2327             if (is_sub)
2328                 show_subtitle(w, &sub, ifile->streams[pkt->stream_index].st, fmt_ctx);
2329             else
2330                 show_frame(w, frame, ifile->streams[pkt->stream_index].st, fmt_ctx);
2331         if (is_sub)
2332             avsubtitle_free(&sub);
2333     }
2334     return got_frame || *packet_new;
2335 }
2336
2337 static void log_read_interval(const ReadInterval *interval, void *log_ctx, int log_level)
2338 {
2339     av_log(log_ctx, log_level, "id:%d", interval->id);
2340
2341     if (interval->has_start) {
2342         av_log(log_ctx, log_level, " start:%s%s", interval->start_is_offset ? "+" : "",
2343                av_ts2timestr(interval->start, &AV_TIME_BASE_Q));
2344     } else {
2345         av_log(log_ctx, log_level, " start:N/A");
2346     }
2347
2348     if (interval->has_end) {
2349         av_log(log_ctx, log_level, " end:%s", interval->end_is_offset ? "+" : "");
2350         if (interval->duration_frames)
2351             av_log(log_ctx, log_level, "#%"PRId64, interval->end);
2352         else
2353             av_log(log_ctx, log_level, "%s", av_ts2timestr(interval->end, &AV_TIME_BASE_Q));
2354     } else {
2355         av_log(log_ctx, log_level, " end:N/A");
2356     }
2357
2358     av_log(log_ctx, log_level, "\n");
2359 }
2360
2361 static int read_interval_packets(WriterContext *w, InputFile *ifile,
2362                                  const ReadInterval *interval, int64_t *cur_ts)
2363 {
2364     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2365     AVPacket pkt;
2366     AVFrame *frame = NULL;
2367     int ret = 0, i = 0, frame_count = 0;
2368     int64_t start = -INT64_MAX, end = interval->end;
2369     int has_start = 0, has_end = interval->has_end && !interval->end_is_offset;
2370
2371     av_init_packet(&pkt);
2372
2373     av_log(NULL, AV_LOG_VERBOSE, "Processing read interval ");
2374     log_read_interval(interval, NULL, AV_LOG_VERBOSE);
2375
2376     if (interval->has_start) {
2377         int64_t target;
2378         if (interval->start_is_offset) {
2379             if (*cur_ts == AV_NOPTS_VALUE) {
2380                 av_log(NULL, AV_LOG_ERROR,
2381                        "Could not seek to relative position since current "
2382                        "timestamp is not defined\n");
2383                 ret = AVERROR(EINVAL);
2384                 goto end;
2385             }
2386             target = *cur_ts + interval->start;
2387         } else {
2388             target = interval->start;
2389         }
2390
2391         av_log(NULL, AV_LOG_VERBOSE, "Seeking to read interval start point %s\n",
2392                av_ts2timestr(target, &AV_TIME_BASE_Q));
2393         if ((ret = avformat_seek_file(fmt_ctx, -1, -INT64_MAX, target, INT64_MAX, 0)) < 0) {
2394             av_log(NULL, AV_LOG_ERROR, "Could not seek to position %"PRId64": %s\n",
2395                    interval->start, av_err2str(ret));
2396             goto end;
2397         }
2398     }
2399
2400     frame = av_frame_alloc();
2401     if (!frame) {
2402         ret = AVERROR(ENOMEM);
2403         goto end;
2404     }
2405     while (!av_read_frame(fmt_ctx, &pkt)) {
2406         if (fmt_ctx->nb_streams > nb_streams) {
2407             REALLOCZ_ARRAY_STREAM(nb_streams_frames,  nb_streams, fmt_ctx->nb_streams);
2408             REALLOCZ_ARRAY_STREAM(nb_streams_packets, nb_streams, fmt_ctx->nb_streams);
2409             REALLOCZ_ARRAY_STREAM(selected_streams,   nb_streams, fmt_ctx->nb_streams);
2410             nb_streams = fmt_ctx->nb_streams;
2411         }
2412         if (selected_streams[pkt.stream_index]) {
2413             AVRational tb = ifile->streams[pkt.stream_index].st->time_base;
2414
2415             if (pkt.pts != AV_NOPTS_VALUE)
2416                 *cur_ts = av_rescale_q(pkt.pts, tb, AV_TIME_BASE_Q);
2417
2418             if (!has_start && *cur_ts != AV_NOPTS_VALUE) {
2419                 start = *cur_ts;
2420                 has_start = 1;
2421             }
2422
2423             if (has_start && !has_end && interval->end_is_offset) {
2424                 end = start + interval->end;
2425                 has_end = 1;
2426             }
2427
2428             if (interval->end_is_offset && interval->duration_frames) {
2429                 if (frame_count >= interval->end)
2430                     break;
2431             } else if (has_end && *cur_ts != AV_NOPTS_VALUE && *cur_ts >= end) {
2432                 break;
2433             }
2434
2435             frame_count++;
2436             if (do_read_packets) {
2437                 if (do_show_packets)
2438                     show_packet(w, ifile, &pkt, i++);
2439                 nb_streams_packets[pkt.stream_index]++;
2440             }
2441             if (do_read_frames) {
2442                 int packet_new = 1;
2443                 while (process_frame(w, ifile, frame, &pkt, &packet_new) > 0);
2444             }
2445         }
2446         av_packet_unref(&pkt);
2447     }
2448     av_packet_unref(&pkt);
2449     //Flush remaining frames that are cached in the decoder
2450     for (i = 0; i < fmt_ctx->nb_streams; i++) {
2451         pkt.stream_index = i;
2452         if (do_read_frames)
2453             while (process_frame(w, ifile, frame, &pkt, &(int){1}) > 0);
2454     }
2455
2456 end:
2457     av_frame_free(&frame);
2458     if (ret < 0) {
2459         av_log(NULL, AV_LOG_ERROR, "Could not read packets in interval ");
2460         log_read_interval(interval, NULL, AV_LOG_ERROR);
2461     }
2462     return ret;
2463 }
2464
2465 static int read_packets(WriterContext *w, InputFile *ifile)
2466 {
2467     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2468     int i, ret = 0;
2469     int64_t cur_ts = fmt_ctx->start_time;
2470
2471     if (read_intervals_nb == 0) {
2472         ReadInterval interval = (ReadInterval) { .has_start = 0, .has_end = 0 };
2473         ret = read_interval_packets(w, ifile, &interval, &cur_ts);
2474     } else {
2475         for (i = 0; i < read_intervals_nb; i++) {
2476             ret = read_interval_packets(w, ifile, &read_intervals[i], &cur_ts);
2477             if (ret < 0)
2478                 break;
2479         }
2480     }
2481
2482     return ret;
2483 }
2484
2485 static int show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx, InputStream *ist, int in_program)
2486 {
2487     AVStream *stream = ist->st;
2488     AVCodecParameters *par;
2489     AVCodecContext *dec_ctx;
2490     char val_str[128];
2491     const char *s;
2492     AVRational sar, dar;
2493     AVBPrint pbuf;
2494     const AVCodecDescriptor *cd;
2495     int ret = 0;
2496     const char *profile = NULL;
2497
2498     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
2499
2500     writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM : SECTION_ID_STREAM);
2501
2502     print_int("index", stream->index);
2503
2504     par     = stream->codecpar;
2505     dec_ctx = ist->dec_ctx;
2506     if (cd = avcodec_descriptor_get(par->codec_id)) {
2507         print_str("codec_name", cd->name);
2508         if (!do_bitexact) {
2509             print_str("codec_long_name",
2510                       cd->long_name ? cd->long_name : "unknown");
2511         }
2512     } else {
2513         print_str_opt("codec_name", "unknown");
2514         if (!do_bitexact) {
2515             print_str_opt("codec_long_name", "unknown");
2516         }
2517     }
2518
2519     if (!do_bitexact && (profile = avcodec_profile_name(par->codec_id, par->profile)))
2520         print_str("profile", profile);
2521     else {
2522         if (par->profile != FF_PROFILE_UNKNOWN) {
2523             char profile_num[12];
2524             snprintf(profile_num, sizeof(profile_num), "%d", par->profile);
2525             print_str("profile", profile_num);
2526         } else
2527             print_str_opt("profile", "unknown");
2528     }
2529
2530     s = av_get_media_type_string(par->codec_type);
2531     if (s) print_str    ("codec_type", s);
2532     else   print_str_opt("codec_type", "unknown");
2533 #if FF_API_LAVF_AVCTX
2534     if (dec_ctx)
2535         print_q("codec_time_base", dec_ctx->time_base, '/');
2536 #endif
2537
2538     /* print AVI/FourCC tag */
2539     print_str("codec_tag_string",    av_fourcc2str(par->codec_tag));
2540     print_fmt("codec_tag", "0x%04"PRIx32, par->codec_tag);
2541
2542     switch (par->codec_type) {
2543     case AVMEDIA_TYPE_VIDEO:
2544         print_int("width",        par->width);
2545         print_int("height",       par->height);
2546 #if FF_API_LAVF_AVCTX
2547         if (dec_ctx) {
2548             print_int("coded_width",  dec_ctx->coded_width);
2549             print_int("coded_height", dec_ctx->coded_height);
2550             print_int("closed_captions", !!(dec_ctx->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS));
2551         }
2552 #endif
2553         print_int("has_b_frames", par->video_delay);
2554         sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, NULL);
2555         if (sar.num) {
2556             print_q("sample_aspect_ratio", sar, ':');
2557             av_reduce(&dar.num, &dar.den,
2558                       par->width  * sar.num,
2559                       par->height * sar.den,
2560                       1024*1024);
2561             print_q("display_aspect_ratio", dar, ':');
2562         } else {
2563             print_str_opt("sample_aspect_ratio", "N/A");
2564             print_str_opt("display_aspect_ratio", "N/A");
2565         }
2566         s = av_get_pix_fmt_name(par->format);
2567         if (s) print_str    ("pix_fmt", s);
2568         else   print_str_opt("pix_fmt", "unknown");
2569         print_int("level",   par->level);
2570
2571         print_color_range(w, par->color_range);
2572         print_color_space(w, par->color_space);
2573         print_color_trc(w, par->color_trc);
2574         print_primaries(w, par->color_primaries);
2575         print_chroma_location(w, par->chroma_location);
2576
2577         if (par->field_order == AV_FIELD_PROGRESSIVE)
2578             print_str("field_order", "progressive");
2579         else if (par->field_order == AV_FIELD_TT)
2580             print_str("field_order", "tt");
2581         else if (par->field_order == AV_FIELD_BB)
2582             print_str("field_order", "bb");
2583         else if (par->field_order == AV_FIELD_TB)
2584             print_str("field_order", "tb");
2585         else if (par->field_order == AV_FIELD_BT)
2586             print_str("field_order", "bt");
2587         else
2588             print_str_opt("field_order", "unknown");
2589
2590 #if FF_API_PRIVATE_OPT
2591         if (dec_ctx && dec_ctx->timecode_frame_start >= 0) {
2592             char tcbuf[AV_TIMECODE_STR_SIZE];
2593             av_timecode_make_mpeg_tc_string(tcbuf, dec_ctx->timecode_frame_start);
2594             print_str("timecode", tcbuf);
2595         } else {
2596             print_str_opt("timecode", "N/A");
2597         }
2598 #endif
2599         if (dec_ctx)
2600             print_int("refs", dec_ctx->refs);
2601         break;
2602
2603     case AVMEDIA_TYPE_AUDIO:
2604         s = av_get_sample_fmt_name(par->format);
2605         if (s) print_str    ("sample_fmt", s);
2606         else   print_str_opt("sample_fmt", "unknown");
2607         print_val("sample_rate",     par->sample_rate, unit_hertz_str);
2608         print_int("channels",        par->channels);
2609
2610         if (par->channel_layout) {
2611             av_bprint_clear(&pbuf);
2612             av_bprint_channel_layout(&pbuf, par->channels, par->channel_layout);
2613             print_str    ("channel_layout", pbuf.str);
2614         } else {
2615             print_str_opt("channel_layout", "unknown");
2616         }
2617
2618         print_int("bits_per_sample", av_get_bits_per_sample(par->codec_id));
2619         break;
2620
2621     case AVMEDIA_TYPE_SUBTITLE:
2622         if (par->width)
2623             print_int("width",       par->width);
2624         else
2625             print_str_opt("width",   "N/A");
2626         if (par->height)
2627             print_int("height",      par->height);
2628         else
2629             print_str_opt("height",  "N/A");
2630         break;
2631     }
2632
2633     if (dec_ctx && dec_ctx->codec && dec_ctx->codec->priv_class && show_private_data) {
2634         const AVOption *opt = NULL;
2635         while (opt = av_opt_next(dec_ctx->priv_data,opt)) {
2636             uint8_t *str;
2637             if (opt->flags) continue;
2638             if (av_opt_get(dec_ctx->priv_data, opt->name, 0, &str) >= 0) {
2639                 print_str(opt->name, str);
2640                 av_free(str);
2641             }
2642         }
2643     }
2644
2645     if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) print_fmt    ("id", "0x%x", stream->id);
2646     else                                          print_str_opt("id", "N/A");
2647     print_q("r_frame_rate",   stream->r_frame_rate,   '/');
2648     print_q("avg_frame_rate", stream->avg_frame_rate, '/');
2649     print_q("time_base",      stream->time_base,      '/');
2650     print_ts  ("start_pts",   stream->start_time);
2651     print_time("start_time",  stream->start_time, &stream->time_base);
2652     print_ts  ("duration_ts", stream->duration);
2653     print_time("duration",    stream->duration, &stream->time_base);
2654     if (par->bit_rate > 0)     print_val    ("bit_rate", par->bit_rate, unit_bit_per_second_str);
2655     else                       print_str_opt("bit_rate", "N/A");
2656 #if FF_API_LAVF_AVCTX
2657     if (stream->codec->rc_max_rate > 0) print_val ("max_bit_rate", stream->codec->rc_max_rate, unit_bit_per_second_str);
2658     else                                print_str_opt("max_bit_rate", "N/A");
2659 #endif
2660     if (dec_ctx && dec_ctx->bits_per_raw_sample > 0) print_fmt("bits_per_raw_sample", "%d", dec_ctx->bits_per_raw_sample);
2661     else                                             print_str_opt("bits_per_raw_sample", "N/A");
2662     if (stream->nb_frames) print_fmt    ("nb_frames", "%"PRId64, stream->nb_frames);
2663     else                   print_str_opt("nb_frames", "N/A");
2664     if (nb_streams_frames[stream_idx])  print_fmt    ("nb_read_frames", "%"PRIu64, nb_streams_frames[stream_idx]);
2665     else                                print_str_opt("nb_read_frames", "N/A");
2666     if (nb_streams_packets[stream_idx]) print_fmt    ("nb_read_packets", "%"PRIu64, nb_streams_packets[stream_idx]);
2667     else                                print_str_opt("nb_read_packets", "N/A");
2668     if (do_show_data)
2669         writer_print_data(w, "extradata", par->extradata,
2670                                           par->extradata_size);
2671     writer_print_data_hash(w, "extradata_hash", par->extradata,
2672                                                 par->extradata_size);
2673
2674     /* Print disposition information */
2675 #define PRINT_DISPOSITION(flagname, name) do {                                \
2676         print_int(name, !!(stream->disposition & AV_DISPOSITION_##flagname)); \
2677     } while (0)
2678
2679     if (do_show_stream_disposition) {
2680         writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM_DISPOSITION : SECTION_ID_STREAM_DISPOSITION);
2681         PRINT_DISPOSITION(DEFAULT,          "default");
2682         PRINT_DISPOSITION(DUB,              "dub");
2683         PRINT_DISPOSITION(ORIGINAL,         "original");
2684         PRINT_DISPOSITION(COMMENT,          "comment");
2685         PRINT_DISPOSITION(LYRICS,           "lyrics");
2686         PRINT_DISPOSITION(KARAOKE,          "karaoke");
2687         PRINT_DISPOSITION(FORCED,           "forced");
2688         PRINT_DISPOSITION(HEARING_IMPAIRED, "hearing_impaired");
2689         PRINT_DISPOSITION(VISUAL_IMPAIRED,  "visual_impaired");
2690         PRINT_DISPOSITION(CLEAN_EFFECTS,    "clean_effects");
2691         PRINT_DISPOSITION(ATTACHED_PIC,     "attached_pic");
2692         PRINT_DISPOSITION(TIMED_THUMBNAILS, "timed_thumbnails");
2693         writer_print_section_footer(w);
2694     }
2695
2696     if (do_show_stream_tags)
2697         ret = show_tags(w, stream->metadata, in_program ? SECTION_ID_PROGRAM_STREAM_TAGS : SECTION_ID_STREAM_TAGS);
2698
2699     if (stream->nb_side_data) {
2700         print_pkt_side_data(w, stream->codecpar, stream->side_data, stream->nb_side_data,
2701                             SECTION_ID_STREAM_SIDE_DATA_LIST,
2702                             SECTION_ID_STREAM_SIDE_DATA);
2703     }
2704
2705     writer_print_section_footer(w);
2706     av_bprint_finalize(&pbuf, NULL);
2707     fflush(stdout);
2708
2709     return ret;
2710 }
2711
2712 static int show_streams(WriterContext *w, InputFile *ifile)
2713 {
2714     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2715     int i, ret = 0;
2716
2717     writer_print_section_header(w, SECTION_ID_STREAMS);
2718     for (i = 0; i < ifile->nb_streams; i++)
2719         if (selected_streams[i]) {
2720             ret = show_stream(w, fmt_ctx, i, &ifile->streams[i], 0);
2721             if (ret < 0)
2722                 break;
2723         }
2724     writer_print_section_footer(w);
2725
2726     return ret;
2727 }
2728
2729 static int show_program(WriterContext *w, InputFile *ifile, AVProgram *program)
2730 {
2731     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2732     int i, ret = 0;
2733
2734     writer_print_section_header(w, SECTION_ID_PROGRAM);
2735     print_int("program_id", program->id);
2736     print_int("program_num", program->program_num);
2737     print_int("nb_streams", program->nb_stream_indexes);
2738     print_int("pmt_pid", program->pmt_pid);
2739     print_int("pcr_pid", program->pcr_pid);
2740     print_ts("start_pts", program->start_time);
2741     print_time("start_time", program->start_time, &AV_TIME_BASE_Q);
2742     print_ts("end_pts", program->end_time);
2743     print_time("end_time", program->end_time, &AV_TIME_BASE_Q);
2744     if (do_show_program_tags)
2745         ret = show_tags(w, program->metadata, SECTION_ID_PROGRAM_TAGS);
2746     if (ret < 0)
2747         goto end;
2748
2749     writer_print_section_header(w, SECTION_ID_PROGRAM_STREAMS);
2750     for (i = 0; i < program->nb_stream_indexes; i++) {
2751         if (selected_streams[program->stream_index[i]]) {
2752             ret = show_stream(w, fmt_ctx, program->stream_index[i], &ifile->streams[program->stream_index[i]], 1);
2753             if (ret < 0)
2754                 break;
2755         }
2756     }
2757     writer_print_section_footer(w);
2758
2759 end:
2760     writer_print_section_footer(w);
2761     return ret;
2762 }
2763
2764 static int show_programs(WriterContext *w, InputFile *ifile)
2765 {
2766     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2767     int i, ret = 0;
2768
2769     writer_print_section_header(w, SECTION_ID_PROGRAMS);
2770     for (i = 0; i < fmt_ctx->nb_programs; i++) {
2771         AVProgram *program = fmt_ctx->programs[i];
2772         if (!program)
2773             continue;
2774         ret = show_program(w, ifile, program);
2775         if (ret < 0)
2776             break;
2777     }
2778     writer_print_section_footer(w);
2779     return ret;
2780 }
2781
2782 static int show_chapters(WriterContext *w, InputFile *ifile)
2783 {
2784     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2785     int i, ret = 0;
2786
2787     writer_print_section_header(w, SECTION_ID_CHAPTERS);
2788     for (i = 0; i < fmt_ctx->nb_chapters; i++) {
2789         AVChapter *chapter = fmt_ctx->chapters[i];
2790
2791         writer_print_section_header(w, SECTION_ID_CHAPTER);
2792         print_int("id", chapter->id);
2793         print_q  ("time_base", chapter->time_base, '/');
2794         print_int("start", chapter->start);
2795         print_time("start_time", chapter->start, &chapter->time_base);
2796         print_int("end", chapter->end);
2797         print_time("end_time", chapter->end, &chapter->time_base);
2798         if (do_show_chapter_tags)
2799             ret = show_tags(w, chapter->metadata, SECTION_ID_CHAPTER_TAGS);
2800         writer_print_section_footer(w);
2801     }
2802     writer_print_section_footer(w);
2803
2804     return ret;
2805 }
2806
2807 static int show_format(WriterContext *w, InputFile *ifile)
2808 {
2809     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2810     char val_str[128];
2811     int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
2812     int ret = 0;
2813
2814     writer_print_section_header(w, SECTION_ID_FORMAT);
2815     print_str_validate("filename", fmt_ctx->url);
2816     print_int("nb_streams",       fmt_ctx->nb_streams);
2817     print_int("nb_programs",      fmt_ctx->nb_programs);
2818     print_str("format_name",      fmt_ctx->iformat->name);
2819     if (!do_bitexact) {
2820         if (fmt_ctx->iformat->long_name) print_str    ("format_long_name", fmt_ctx->iformat->long_name);
2821         else                             print_str_opt("format_long_name", "unknown");
2822     }
2823     print_time("start_time",      fmt_ctx->start_time, &AV_TIME_BASE_Q);
2824     print_time("duration",        fmt_ctx->duration,   &AV_TIME_BASE_Q);
2825     if (size >= 0) print_val    ("size", size, unit_byte_str);
2826     else           print_str_opt("size", "N/A");
2827     if (fmt_ctx->bit_rate > 0) print_val    ("bit_rate", fmt_ctx->bit_rate, unit_bit_per_second_str);
2828     else                       print_str_opt("bit_rate", "N/A");
2829     print_int("probe_score", fmt_ctx->probe_score);
2830     if (do_show_format_tags)
2831         ret = show_tags(w, fmt_ctx->metadata, SECTION_ID_FORMAT_TAGS);
2832
2833     writer_print_section_footer(w);
2834     fflush(stdout);
2835     return ret;
2836 }
2837
2838 static void show_error(WriterContext *w, int err)
2839 {
2840     char errbuf[128];
2841     const char *errbuf_ptr = errbuf;
2842
2843     if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
2844         errbuf_ptr = strerror(AVUNERROR(err));
2845
2846     writer_print_section_header(w, SECTION_ID_ERROR);
2847     print_int("code", err);
2848     print_str("string", errbuf_ptr);
2849     writer_print_section_footer(w);
2850 }
2851
2852 static int open_input_file(InputFile *ifile, const char *filename,
2853                            const char *print_filename)
2854 {
2855     int err, i;
2856     AVFormatContext *fmt_ctx = NULL;
2857     AVDictionaryEntry *t = NULL;
2858     int scan_all_pmts_set = 0;
2859
2860     fmt_ctx = avformat_alloc_context();
2861     if (!fmt_ctx) {
2862         print_error(filename, AVERROR(ENOMEM));
2863         exit_program(1);
2864     }
2865
2866     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2867         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2868         scan_all_pmts_set = 1;
2869     }
2870     if ((err = avformat_open_input(&fmt_ctx, filename,
2871                                    iformat, &format_opts)) < 0) {
2872         print_error(filename, err);
2873         return err;
2874     }
2875     if (print_filename) {
2876         av_freep(&fmt_ctx->url);
2877         fmt_ctx->url = av_strdup(print_filename);
2878     }
2879     ifile->fmt_ctx = fmt_ctx;
2880     if (scan_all_pmts_set)
2881         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2882     while ((t = av_dict_get(format_opts, "", t, AV_DICT_IGNORE_SUFFIX)))
2883         av_log(NULL, AV_LOG_WARNING, "Option %s skipped - not known to demuxer.\n", t->key);
2884
2885     if (find_stream_info) {
2886         AVDictionary **opts = setup_find_stream_info_opts(fmt_ctx, codec_opts);
2887         int orig_nb_streams = fmt_ctx->nb_streams;
2888
2889         err = avformat_find_stream_info(fmt_ctx, opts);
2890
2891         for (i = 0; i < orig_nb_streams; i++)
2892             av_dict_free(&opts[i]);
2893         av_freep(&opts);
2894
2895         if (err < 0) {
2896             print_error(filename, err);
2897             return err;
2898         }
2899     }
2900
2901     av_dump_format(fmt_ctx, 0, filename, 0);
2902
2903     ifile->streams = av_mallocz_array(fmt_ctx->nb_streams,
2904                                       sizeof(*ifile->streams));
2905     if (!ifile->streams)
2906         exit(1);
2907     ifile->nb_streams = fmt_ctx->nb_streams;
2908
2909     /* bind a decoder to each input stream */
2910     for (i = 0; i < fmt_ctx->nb_streams; i++) {
2911         InputStream *ist = &ifile->streams[i];
2912         AVStream *stream = fmt_ctx->streams[i];
2913         AVCodec *codec;
2914
2915         ist->st = stream;
2916
2917         if (stream->codecpar->codec_id == AV_CODEC_ID_PROBE) {
2918             av_log(NULL, AV_LOG_WARNING,
2919                    "Failed to probe codec for input stream %d\n",
2920                     stream->index);
2921             continue;
2922         }
2923
2924         codec = avcodec_find_decoder(stream->codecpar->codec_id);
2925         if (!codec) {
2926             av_log(NULL, AV_LOG_WARNING,
2927                     "Unsupported codec with id %d for input stream %d\n",
2928                     stream->codecpar->codec_id, stream->index);
2929             continue;
2930         }
2931         {
2932             AVDictionary *opts = filter_codec_opts(codec_opts, stream->codecpar->codec_id,
2933                                                    fmt_ctx, stream, codec);
2934
2935             ist->dec_ctx = avcodec_alloc_context3(codec);
2936             if (!ist->dec_ctx)
2937                 exit(1);
2938
2939             err = avcodec_parameters_to_context(ist->dec_ctx, stream->codecpar);
2940             if (err < 0)
2941                 exit(1);
2942
2943             if (do_show_log) {
2944                 // For loging it is needed to disable at least frame threads as otherwise
2945                 // the log information would need to be reordered and matches up to contexts and frames
2946                 // That is in fact possible but not trivial
2947                 av_dict_set(&codec_opts, "threads", "1", 0);
2948             }
2949
2950             ist->dec_ctx->pkt_timebase = stream->time_base;
2951             ist->dec_ctx->framerate = stream->avg_frame_rate;
2952 #if FF_API_LAVF_AVCTX
2953             ist->dec_ctx->properties = stream->codec->properties;
2954             ist->dec_ctx->coded_width = stream->codec->coded_width;
2955             ist->dec_ctx->coded_height = stream->codec->coded_height;
2956 #endif
2957
2958             if (avcodec_open2(ist->dec_ctx, codec, &opts) < 0) {
2959                 av_log(NULL, AV_LOG_WARNING, "Could not open codec for input stream %d\n",
2960                        stream->index);
2961                 exit(1);
2962             }
2963
2964             if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2965                 av_log(NULL, AV_LOG_ERROR, "Option %s for input stream %d not found\n",
2966                        t->key, stream->index);
2967                 return AVERROR_OPTION_NOT_FOUND;
2968             }
2969         }
2970     }
2971
2972     ifile->fmt_ctx = fmt_ctx;
2973     return 0;
2974 }
2975
2976 static void close_input_file(InputFile *ifile)
2977 {
2978     int i;
2979
2980     /* close decoder for each stream */
2981     for (i = 0; i < ifile->nb_streams; i++)
2982         if (ifile->streams[i].st->codecpar->codec_id != AV_CODEC_ID_NONE)
2983             avcodec_free_context(&ifile->streams[i].dec_ctx);
2984
2985     av_freep(&ifile->streams);
2986     ifile->nb_streams = 0;
2987
2988     avformat_close_input(&ifile->fmt_ctx);
2989 }
2990
2991 static int probe_file(WriterContext *wctx, const char *filename,
2992                       const char *print_filename)
2993 {
2994     InputFile ifile = { 0 };
2995     int ret, i;
2996     int section_id;
2997
2998     do_read_frames = do_show_frames || do_count_frames;
2999     do_read_packets = do_show_packets || do_count_packets;
3000
3001     ret = open_input_file(&ifile, filename, print_filename);
3002     if (ret < 0)
3003         goto end;
3004
3005 #define CHECK_END if (ret < 0) goto end
3006
3007     nb_streams = ifile.fmt_ctx->nb_streams;
3008     REALLOCZ_ARRAY_STREAM(nb_streams_frames,0,ifile.fmt_ctx->nb_streams);
3009     REALLOCZ_ARRAY_STREAM(nb_streams_packets,0,ifile.fmt_ctx->nb_streams);
3010     REALLOCZ_ARRAY_STREAM(selected_streams,0,ifile.fmt_ctx->nb_streams);
3011
3012     for (i = 0; i < ifile.fmt_ctx->nb_streams; i++) {
3013         if (stream_specifier) {
3014             ret = avformat_match_stream_specifier(ifile.fmt_ctx,
3015                                                   ifile.fmt_ctx->streams[i],
3016                                                   stream_specifier);
3017             CHECK_END;
3018             else
3019                 selected_streams[i] = ret;
3020             ret = 0;
3021         } else {
3022             selected_streams[i] = 1;
3023         }
3024         if (!selected_streams[i])
3025             ifile.fmt_ctx->streams[i]->discard = AVDISCARD_ALL;
3026     }
3027
3028     if (do_read_frames || do_read_packets) {
3029         if (do_show_frames && do_show_packets &&
3030             wctx->writer->flags & WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER)
3031             section_id = SECTION_ID_PACKETS_AND_FRAMES;
3032         else if (do_show_packets && !do_show_frames)
3033             section_id = SECTION_ID_PACKETS;
3034         else // (!do_show_packets && do_show_frames)
3035             section_id = SECTION_ID_FRAMES;
3036         if (do_show_frames || do_show_packets)
3037             writer_print_section_header(wctx, section_id);
3038         ret = read_packets(wctx, &ifile);
3039         if (do_show_frames || do_show_packets)
3040             writer_print_section_footer(wctx);
3041         CHECK_END;
3042     }
3043
3044     if (do_show_programs) {
3045         ret = show_programs(wctx, &ifile);
3046         CHECK_END;
3047     }
3048
3049     if (do_show_streams) {
3050         ret = show_streams(wctx, &ifile);
3051         CHECK_END;
3052     }
3053     if (do_show_chapters) {
3054         ret = show_chapters(wctx, &ifile);
3055         CHECK_END;
3056     }
3057     if (do_show_format) {
3058         ret = show_format(wctx, &ifile);
3059         CHECK_END;
3060     }
3061
3062 end:
3063     if (ifile.fmt_ctx)
3064         close_input_file(&ifile);
3065     av_freep(&nb_streams_frames);
3066     av_freep(&nb_streams_packets);
3067     av_freep(&selected_streams);
3068
3069     return ret;
3070 }
3071
3072 static void show_usage(void)
3073 {
3074     av_log(NULL, AV_LOG_INFO, "Simple multimedia streams analyzer\n");
3075     av_log(NULL, AV_LOG_INFO, "usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
3076     av_log(NULL, AV_LOG_INFO, "\n");
3077 }
3078
3079 static void ffprobe_show_program_version(WriterContext *w)
3080 {
3081     AVBPrint pbuf;
3082     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
3083
3084     writer_print_section_header(w, SECTION_ID_PROGRAM_VERSION);
3085     print_str("version", FFMPEG_VERSION);
3086     print_fmt("copyright", "Copyright (c) %d-%d the FFmpeg developers",
3087               program_birth_year, CONFIG_THIS_YEAR);
3088     print_str("compiler_ident", CC_IDENT);
3089     print_str("configuration", FFMPEG_CONFIGURATION);
3090     writer_print_section_footer(w);
3091
3092     av_bprint_finalize(&pbuf, NULL);
3093 }
3094
3095 #define SHOW_LIB_VERSION(libname, LIBNAME)                              \
3096     do {                                                                \
3097         if (CONFIG_##LIBNAME) {                                         \
3098             unsigned int version = libname##_version();                 \
3099             writer_print_section_header(w, SECTION_ID_LIBRARY_VERSION); \
3100             print_str("name",    "lib" #libname);                       \
3101             print_int("major",   LIB##LIBNAME##_VERSION_MAJOR);         \
3102             print_int("minor",   LIB##LIBNAME##_VERSION_MINOR);         \
3103             print_int("micro",   LIB##LIBNAME##_VERSION_MICRO);         \
3104             print_int("version", version);                              \
3105             print_str("ident",   LIB##LIBNAME##_IDENT);                 \
3106             writer_print_section_footer(w);                             \
3107         }                                                               \
3108     } while (0)
3109
3110 static void ffprobe_show_library_versions(WriterContext *w)
3111 {
3112     writer_print_section_header(w, SECTION_ID_LIBRARY_VERSIONS);
3113     SHOW_LIB_VERSION(avutil,     AVUTIL);
3114     SHOW_LIB_VERSION(avcodec,    AVCODEC);
3115     SHOW_LIB_VERSION(avformat,   AVFORMAT);
3116     SHOW_LIB_VERSION(avdevice,   AVDEVICE);
3117     SHOW_LIB_VERSION(avfilter,   AVFILTER);
3118     SHOW_LIB_VERSION(swscale,    SWSCALE);
3119     SHOW_LIB_VERSION(swresample, SWRESAMPLE);
3120     SHOW_LIB_VERSION(postproc,   POSTPROC);
3121     writer_print_section_footer(w);
3122 }
3123
3124 #define PRINT_PIX_FMT_FLAG(flagname, name)                                \
3125     do {                                                                  \
3126         print_int(name, !!(pixdesc->flags & AV_PIX_FMT_FLAG_##flagname)); \
3127     } while (0)
3128
3129 static void ffprobe_show_pixel_formats(WriterContext *w)
3130 {
3131     const AVPixFmtDescriptor *pixdesc = NULL;
3132     int i, n;
3133
3134     writer_print_section_header(w, SECTION_ID_PIXEL_FORMATS);
3135     while (pixdesc = av_pix_fmt_desc_next(pixdesc)) {
3136         writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT);
3137         print_str("name", pixdesc->name);
3138         print_int("nb_components", pixdesc->nb_components);
3139         if ((pixdesc->nb_components >= 3) && !(pixdesc->flags & AV_PIX_FMT_FLAG_RGB)) {
3140             print_int    ("log2_chroma_w", pixdesc->log2_chroma_w);
3141             print_int    ("log2_chroma_h", pixdesc->log2_chroma_h);
3142         } else {
3143             print_str_opt("log2_chroma_w", "N/A");
3144             print_str_opt("log2_chroma_h", "N/A");
3145         }
3146         n = av_get_bits_per_pixel(pixdesc);
3147         if (n) print_int    ("bits_per_pixel", n);
3148         else   print_str_opt("bits_per_pixel", "N/A");
3149         if (do_show_pixel_format_flags) {
3150             writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_FLAGS);
3151             PRINT_PIX_FMT_FLAG(BE,        "big_endian");
3152             PRINT_PIX_FMT_FLAG(PAL,       "palette");
3153             PRINT_PIX_FMT_FLAG(BITSTREAM, "bitstream");
3154             PRINT_PIX_FMT_FLAG(HWACCEL,   "hwaccel");
3155             PRINT_PIX_FMT_FLAG(PLANAR,    "planar");
3156             PRINT_PIX_FMT_FLAG(RGB,       "rgb");
3157 #if FF_API_PSEUDOPAL
3158             PRINT_PIX_FMT_FLAG(PSEUDOPAL, "pseudopal");
3159 #endif
3160             PRINT_PIX_FMT_FLAG(ALPHA,     "alpha");
3161             writer_print_section_footer(w);
3162         }
3163         if (do_show_pixel_format_components && (pixdesc->nb_components > 0)) {
3164             writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENTS);
3165             for (i = 0; i < pixdesc->nb_components; i++) {
3166                 writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENT);
3167                 print_int("index", i + 1);
3168                 print_int("bit_depth", pixdesc->comp[i].depth);
3169                 writer_print_section_footer(w);
3170             }
3171             writer_print_section_footer(w);
3172         }
3173         writer_print_section_footer(w);
3174     }
3175     writer_print_section_footer(w);
3176 }
3177
3178 static int opt_format(void *optctx, const char *opt, const char *arg)
3179 {
3180     iformat = av_find_input_format(arg);
3181     if (!iformat) {
3182         av_log(NULL, AV_LOG_ERROR, "Unknown input format: %s\n", arg);
3183         return AVERROR(EINVAL);
3184     }
3185     return 0;
3186 }
3187
3188 static inline void mark_section_show_entries(SectionID section_id,
3189                                              int show_all_entries, AVDictionary *entries)
3190 {
3191     struct section *section = &sections[section_id];
3192
3193     section->show_all_entries = show_all_entries;
3194     if (show_all_entries) {
3195         SectionID *id;
3196         for (id = section->children_ids; *id != -1; id++)
3197             mark_section_show_entries(*id, show_all_entries, entries);
3198     } else {
3199         av_dict_copy(&section->entries_to_show, entries, 0);
3200     }
3201 }
3202
3203 static int match_section(const char *section_name,
3204                          int show_all_entries, AVDictionary *entries)
3205 {
3206     int i, ret = 0;
3207
3208     for (i = 0; i < FF_ARRAY_ELEMS(sections); i++) {
3209         const struct section *section = &sections[i];
3210         if (!strcmp(section_name, section->name) ||
3211             (section->unique_name && !strcmp(section_name, section->unique_name))) {
3212             av_log(NULL, AV_LOG_DEBUG,
3213                    "'%s' matches section with unique name '%s'\n", section_name,
3214                    (char *)av_x_if_null(section->unique_name, section->name));
3215             ret++;
3216             mark_section_show_entries(section->id, show_all_entries, entries);
3217         }
3218     }
3219     return ret;
3220 }
3221
3222 static int opt_show_entries(void *optctx, const char *opt, const char *arg)
3223 {
3224     const char *p = arg;
3225     int ret = 0;
3226
3227     while (*p) {
3228         AVDictionary *entries = NULL;
3229         char *section_name = av_get_token(&p, "=:");
3230         int show_all_entries = 0;
3231
3232         if (!section_name) {
3233             av_log(NULL, AV_LOG_ERROR,
3234                    "Missing section name for option '%s'\n", opt);
3235             return AVERROR(EINVAL);
3236         }
3237
3238         if (*p == '=') {
3239             p++;
3240             while (*p && *p != ':') {
3241                 char *entry = av_get_token(&p, ",:");
3242                 if (!entry)
3243                     break;
3244                 av_log(NULL, AV_LOG_VERBOSE,
3245                        "Adding '%s' to the entries to show in section '%s'\n",
3246                        entry, section_name);
3247                 av_dict_set(&entries, entry, "", AV_DICT_DONT_STRDUP_KEY);
3248                 if (*p == ',')
3249                     p++;
3250             }
3251         } else {
3252             show_all_entries = 1;
3253         }
3254
3255         ret = match_section(section_name, show_all_entries, entries);
3256         if (ret == 0) {
3257             av_log(NULL, AV_LOG_ERROR, "No match for section '%s'\n", section_name);
3258             ret = AVERROR(EINVAL);
3259         }
3260         av_dict_free(&entries);
3261         av_free(section_name);
3262
3263         if (ret <= 0)
3264             break;
3265         if (*p)
3266             p++;
3267     }
3268
3269     return ret;
3270 }
3271
3272 static int opt_show_format_entry(void *optctx, const char *opt, const char *arg)
3273 {
3274     char *buf = av_asprintf("format=%s", arg);
3275     int ret;
3276
3277     if (!buf)
3278         return AVERROR(ENOMEM);
3279
3280     av_log(NULL, AV_LOG_WARNING,
3281            "Option '%s' is deprecated, use '-show_entries format=%s' instead\n",
3282            opt, arg);
3283     ret = opt_show_entries(optctx, opt, buf);
3284     av_free(buf);
3285     return ret;
3286 }
3287
3288 static void opt_input_file(void *optctx, const char *arg)
3289 {
3290     if (input_filename) {
3291         av_log(NULL, AV_LOG_ERROR,
3292                 "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3293                 arg, input_filename);
3294         exit_program(1);
3295     }
3296     if (!strcmp(arg, "-"))
3297         arg = "pipe:";
3298     input_filename = arg;
3299 }
3300
3301 static int opt_input_file_i(void *optctx, const char *opt, const char *arg)
3302 {
3303     opt_input_file(optctx, arg);
3304     return 0;
3305 }
3306
3307 static int opt_print_filename(void *optctx, const char *opt, const char *arg)
3308 {
3309     print_input_filename = arg;
3310     return 0;
3311 }
3312
3313 void show_help_default(const char *opt, const char *arg)
3314 {
3315     av_log_set_callback(log_callback_help);
3316     show_usage();
3317     show_help_options(options, "Main options:", 0, 0, 0);
3318     printf("\n");
3319
3320     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3321     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3322 }
3323
3324 /**
3325  * Parse interval specification, according to the format:
3326  * INTERVAL ::= [START|+START_OFFSET][%[END|+END_OFFSET]]
3327  * INTERVALS ::= INTERVAL[,INTERVALS]
3328 */
3329 static int parse_read_interval(const char *interval_spec,
3330                                ReadInterval *interval)
3331 {
3332     int ret = 0;
3333     char *next, *p, *spec = av_strdup(interval_spec);
3334     if (!spec)
3335         return AVERROR(ENOMEM);
3336
3337     if (!*spec) {
3338         av_log(NULL, AV_LOG_ERROR, "Invalid empty interval specification\n");
3339         ret = AVERROR(EINVAL);
3340         goto end;
3341     }
3342
3343     p = spec;
3344     next = strchr(spec, '%');
3345     if (next)
3346         *next++ = 0;
3347
3348     /* parse first part */
3349     if (*p) {
3350         interval->has_start = 1;
3351
3352         if (*p == '+') {
3353             interval->start_is_offset = 1;
3354             p++;
3355         } else {
3356             interval->start_is_offset = 0;
3357         }
3358
3359         ret = av_parse_time(&interval->start, p, 1);
3360         if (ret < 0) {
3361             av_log(NULL, AV_LOG_ERROR, "Invalid interval start specification '%s'\n", p);
3362             goto end;
3363         }
3364     } else {
3365         interval->has_start = 0;
3366     }
3367
3368     /* parse second part */
3369     p = next;
3370     if (p && *p) {
3371         int64_t us;
3372         interval->has_end = 1;
3373
3374         if (*p == '+') {
3375             interval->end_is_offset = 1;
3376             p++;
3377         } else {
3378             interval->end_is_offset = 0;
3379         }
3380
3381         if (interval->end_is_offset && *p == '#') {
3382             long long int lli;
3383             char *tail;
3384             interval->duration_frames = 1;
3385             p++;
3386             lli = strtoll(p, &tail, 10);
3387             if (*tail || lli < 0) {
3388                 av_log(NULL, AV_LOG_ERROR,
3389                        "Invalid or negative value '%s' for duration number of frames\n", p);
3390                 goto end;
3391             }
3392             interval->end = lli;
3393         } else {
3394             interval->duration_frames = 0;
3395             ret = av_parse_time(&us, p, 1);
3396             if (ret < 0) {
3397                 av_log(NULL, AV_LOG_ERROR, "Invalid interval end/duration specification '%s'\n", p);
3398                 goto end;
3399             }
3400             interval->end = us;
3401         }
3402     } else {
3403         interval->has_end = 0;
3404     }
3405
3406 end:
3407     av_free(spec);
3408     return ret;
3409 }
3410
3411 static int parse_read_intervals(const char *intervals_spec)
3412 {
3413     int ret, n, i;
3414     char *p, *spec = av_strdup(intervals_spec);
3415     if (!spec)
3416         return AVERROR(ENOMEM);
3417
3418     /* preparse specification, get number of intervals */
3419     for (n = 0, p = spec; *p; p++)
3420         if (*p == ',')
3421             n++;
3422     n++;
3423
3424     read_intervals = av_malloc_array(n, sizeof(*read_intervals));
3425     if (!read_intervals) {
3426         ret = AVERROR(ENOMEM);
3427         goto end;
3428     }
3429     read_intervals_nb = n;
3430
3431     /* parse intervals */
3432     p = spec;
3433     for (i = 0; p; i++) {
3434         char *next;
3435
3436         av_assert0(i < read_intervals_nb);
3437         next = strchr(p, ',');
3438         if (next)
3439             *next++ = 0;
3440
3441         read_intervals[i].id = i;
3442         ret = parse_read_interval(p, &read_intervals[i]);
3443         if (ret < 0) {
3444             av_log(NULL, AV_LOG_ERROR, "Error parsing read interval #%d '%s'\n",
3445                    i, p);
3446             goto end;
3447         }
3448         av_log(NULL, AV_LOG_VERBOSE, "Parsed log interval ");
3449         log_read_interval(&read_intervals[i], NULL, AV_LOG_VERBOSE);
3450         p = next;
3451     }
3452     av_assert0(i == read_intervals_nb);
3453
3454 end:
3455     av_free(spec);
3456     return ret;
3457 }
3458
3459 static int opt_read_intervals(void *optctx, const char *opt, const char *arg)
3460 {
3461     return parse_read_intervals(arg);
3462 }
3463
3464 static int opt_pretty(void *optctx, const char *opt, const char *arg)
3465 {
3466     show_value_unit              = 1;
3467     use_value_prefix             = 1;
3468     use_byte_value_binary_prefix = 1;
3469     use_value_sexagesimal_format = 1;
3470     return 0;
3471 }
3472
3473 static void print_section(SectionID id, int level)
3474 {
3475     const SectionID *pid;
3476     const struct section *section = &sections[id];
3477     printf("%c%c%c",
3478            section->flags & SECTION_FLAG_IS_WRAPPER           ? 'W' : '.',
3479            section->flags & SECTION_FLAG_IS_ARRAY             ? 'A' : '.',
3480            section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS  ? 'V' : '.');
3481     printf("%*c  %s", level * 4, ' ', section->name);
3482     if (section->unique_name)
3483         printf("/%s", section->unique_name);
3484     printf("\n");
3485
3486     for (pid = section->children_ids; *pid != -1; pid++)
3487         print_section(*pid, level+1);
3488 }
3489
3490 static int opt_sections(void *optctx, const char *opt, const char *arg)
3491 {
3492     printf("Sections:\n"
3493            "W.. = Section is a wrapper (contains other sections, no local entries)\n"
3494            ".A. = Section contains an array of elements of the same type\n"
3495            "..V = Section may contain a variable number of fields with variable keys\n"
3496            "FLAGS NAME/UNIQUE_NAME\n"
3497            "---\n");
3498     print_section(SECTION_ID_ROOT, 0);
3499     return 0;
3500 }
3501
3502 static int opt_show_versions(void *optctx, const char *opt, const char *arg)
3503 {
3504     mark_section_show_entries(SECTION_ID_PROGRAM_VERSION, 1, NULL);
3505     mark_section_show_entries(SECTION_ID_LIBRARY_VERSION, 1, NULL);
3506     return 0;
3507 }
3508
3509 #define DEFINE_OPT_SHOW_SECTION(section, target_section_id)             \
3510     static int opt_show_##section(void *optctx, const char *opt, const char *arg) \
3511     {                                                                   \
3512         mark_section_show_entries(SECTION_ID_##target_section_id, 1, NULL); \
3513         return 0;                                                       \
3514     }
3515
3516 DEFINE_OPT_SHOW_SECTION(chapters,         CHAPTERS)
3517 DEFINE_OPT_SHOW_SECTION(error,            ERROR)
3518 DEFINE_OPT_SHOW_SECTION(format,           FORMAT)
3519 DEFINE_OPT_SHOW_SECTION(frames,           FRAMES)
3520 DEFINE_OPT_SHOW_SECTION(library_versions, LIBRARY_VERSIONS)
3521 DEFINE_OPT_SHOW_SECTION(packets,          PACKETS)
3522 DEFINE_OPT_SHOW_SECTION(pixel_formats,    PIXEL_FORMATS)
3523 DEFINE_OPT_SHOW_SECTION(program_version,  PROGRAM_VERSION)
3524 DEFINE_OPT_SHOW_SECTION(streams,          STREAMS)
3525 DEFINE_OPT_SHOW_SECTION(programs,         PROGRAMS)
3526
3527 static const OptionDef real_options[] = {
3528     CMDUTILS_COMMON_OPTIONS
3529     { "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" },
3530     { "unit", OPT_BOOL, {&show_value_unit}, "show unit of the displayed values" },
3531     { "prefix", OPT_BOOL, {&use_value_prefix}, "use SI prefixes for the displayed values" },
3532     { "byte_binary_prefix", OPT_BOOL, {&use_byte_value_binary_prefix},
3533       "use binary prefixes for byte units" },
3534     { "sexagesimal", OPT_BOOL,  {&use_value_sexagesimal_format},
3535       "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
3536     { "pretty", 0, {.func_arg = opt_pretty},
3537       "prettify the format of displayed values, make it more human readable" },
3538     { "print_format", OPT_STRING | HAS_ARG, { &print_format },
3539       "set the output printing format (available formats are: default, compact, csv, flat, ini, json, xml)", "format" },
3540     { "of", OPT_STRING | HAS_ARG, { &print_format }, "alias for -print_format", "format" },
3541     { "select_streams", OPT_STRING | HAS_ARG, { &stream_specifier }, "select the specified streams", "stream_specifier" },
3542     { "sections", OPT_EXIT, {.func_arg = opt_sections}, "print sections structure and section information, and exit" },
3543     { "show_data",    OPT_BOOL, { &do_show_data }, "show packets data" },
3544     { "show_data_hash", OPT_STRING | HAS_ARG, { &show_data_hash }, "show packets data hash" },
3545     { "show_error",   0, { .func_arg = &opt_show_error },  "show probing error" },
3546     { "show_format",  0, { .func_arg = &opt_show_format }, "show format/container info" },
3547     { "show_frames",  0, { .func_arg = &opt_show_frames }, "show frames info" },
3548     { "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry},
3549       "show a particular entry from the format/container info", "entry" },
3550     { "show_entries", HAS_ARG, {.func_arg = opt_show_entries},
3551       "show a set of specified entries", "entry_list" },
3552 #if HAVE_THREADS
3553     { "show_log", OPT_INT|HAS_ARG, { &do_show_log }, "show log" },
3554 #endif
3555     { "show_packets", 0, { .func_arg = &opt_show_packets }, "show packets info" },
3556     { "show_programs", 0, { .func_arg = &opt_show_programs }, "show programs info" },
3557     { "show_streams", 0, { .func_arg = &opt_show_streams }, "show streams info" },
3558     { "show_chapters", 0, { .func_arg = &opt_show_chapters }, "show chapters info" },
3559     { "count_frames", OPT_BOOL, { &do_count_frames }, "count the number of frames per stream" },
3560     { "count_packets", OPT_BOOL, { &do_count_packets }, "count the number of packets per stream" },
3561     { "show_program_version",  0, { .func_arg = &opt_show_program_version },  "show ffprobe version" },
3562     { "show_library_versions", 0, { .func_arg = &opt_show_library_versions }, "show library versions" },
3563     { "show_versions",         0, { .func_arg = &opt_show_versions }, "show program and library versions" },
3564     { "show_pixel_formats", 0, { .func_arg = &opt_show_pixel_formats }, "show pixel format descriptions" },
3565     { "show_private_data", OPT_BOOL, { &show_private_data }, "show private data" },
3566     { "private",           OPT_BOOL, { &show_private_data }, "same as show_private_data" },
3567     { "bitexact", OPT_BOOL, {&do_bitexact}, "force bitexact output" },
3568     { "read_intervals", HAS_ARG, {.func_arg = opt_read_intervals}, "set read intervals", "read_intervals" },
3569     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default}, "generic catch all option", "" },
3570     { "i", HAS_ARG, {.func_arg = opt_input_file_i}, "read specified file", "input_file"},
3571     { "print_filename", HAS_ARG, {.func_arg = opt_print_filename}, "override the printed input filename", "print_file"},
3572     { "find_stream_info", OPT_BOOL | OPT_INPUT | OPT_EXPERT, { &find_stream_info },
3573         "read and decode the streams to fill missing information with heuristics" },
3574     { NULL, },
3575 };
3576
3577 static inline int check_section_show_entries(int section_id)
3578 {
3579     int *id;
3580     struct section *section = &sections[section_id];
3581     if (sections[section_id].show_all_entries || sections[section_id].entries_to_show)
3582         return 1;
3583     for (id = section->children_ids; *id != -1; id++)
3584         if (check_section_show_entries(*id))
3585             return 1;
3586     return 0;
3587 }
3588
3589 #define SET_DO_SHOW(id, varname) do {                                   \
3590         if (check_section_show_entries(SECTION_ID_##id))                \
3591             do_show_##varname = 1;                                      \
3592     } while (0)
3593
3594 int main(int argc, char **argv)
3595 {
3596     const Writer *w;
3597     WriterContext *wctx;
3598     char *buf;
3599     char *w_name = NULL, *w_args = NULL;
3600     int ret, i;
3601
3602     init_dynload();
3603
3604 #if HAVE_THREADS
3605     ret = pthread_mutex_init(&log_mutex, NULL);
3606     if (ret != 0) {
3607         goto end;
3608     }
3609 #endif
3610     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3611     register_exit(ffprobe_cleanup);
3612
3613     options = real_options;
3614     parse_loglevel(argc, argv, options);
3615     avformat_network_init();
3616     init_opts();
3617 #if CONFIG_AVDEVICE
3618     avdevice_register_all();
3619 #endif
3620
3621     show_banner(argc, argv, options);
3622     parse_options(NULL, argc, argv, options, opt_input_file);
3623
3624     if (do_show_log)
3625         av_log_set_callback(log_callback);
3626
3627     /* mark things to show, based on -show_entries */
3628     SET_DO_SHOW(CHAPTERS, chapters);
3629     SET_DO_SHOW(ERROR, error);
3630     SET_DO_SHOW(FORMAT, format);
3631     SET_DO_SHOW(FRAMES, frames);
3632     SET_DO_SHOW(LIBRARY_VERSIONS, library_versions);
3633     SET_DO_SHOW(PACKETS, packets);
3634     SET_DO_SHOW(PIXEL_FORMATS, pixel_formats);
3635     SET_DO_SHOW(PIXEL_FORMAT_FLAGS, pixel_format_flags);
3636     SET_DO_SHOW(PIXEL_FORMAT_COMPONENTS, pixel_format_components);
3637     SET_DO_SHOW(PROGRAM_VERSION, program_version);
3638     SET_DO_SHOW(PROGRAMS, programs);
3639     SET_DO_SHOW(STREAMS, streams);
3640     SET_DO_SHOW(STREAM_DISPOSITION, stream_disposition);
3641     SET_DO_SHOW(PROGRAM_STREAM_DISPOSITION, stream_disposition);
3642
3643     SET_DO_SHOW(CHAPTER_TAGS, chapter_tags);
3644     SET_DO_SHOW(FORMAT_TAGS, format_tags);
3645     SET_DO_SHOW(FRAME_TAGS, frame_tags);
3646     SET_DO_SHOW(PROGRAM_TAGS, program_tags);
3647     SET_DO_SHOW(STREAM_TAGS, stream_tags);
3648     SET_DO_SHOW(PROGRAM_STREAM_TAGS, stream_tags);
3649     SET_DO_SHOW(PACKET_TAGS, packet_tags);
3650
3651     if (do_bitexact && (do_show_program_version || do_show_library_versions)) {
3652         av_log(NULL, AV_LOG_ERROR,
3653                "-bitexact and -show_program_version or -show_library_versions "
3654                "options are incompatible\n");
3655         ret = AVERROR(EINVAL);
3656         goto end;
3657     }
3658
3659     writer_register_all();
3660
3661     if (!print_format)
3662         print_format = av_strdup("default");
3663     if (!print_format) {
3664         ret = AVERROR(ENOMEM);
3665         goto end;
3666     }
3667     w_name = av_strtok(print_format, "=", &buf);
3668     if (!w_name) {
3669         av_log(NULL, AV_LOG_ERROR,
3670                "No name specified for the output format\n");
3671         ret = AVERROR(EINVAL);
3672         goto end;
3673     }
3674     w_args = buf;
3675
3676     if (show_data_hash) {
3677         if ((ret = av_hash_alloc(&hash, show_data_hash)) < 0) {
3678             if (ret == AVERROR(EINVAL)) {
3679                 const char *n;
3680                 av_log(NULL, AV_LOG_ERROR,
3681                        "Unknown hash algorithm '%s'\nKnown algorithms:",
3682                        show_data_hash);
3683                 for (i = 0; (n = av_hash_names(i)); i++)
3684                     av_log(NULL, AV_LOG_ERROR, " %s", n);
3685                 av_log(NULL, AV_LOG_ERROR, "\n");
3686             }
3687             goto end;
3688         }
3689     }
3690
3691     w = writer_get_by_name(w_name);
3692     if (!w) {
3693         av_log(NULL, AV_LOG_ERROR, "Unknown output format with name '%s'\n", w_name);
3694         ret = AVERROR(EINVAL);
3695         goto end;
3696     }
3697
3698     if ((ret = writer_open(&wctx, w, w_args,
3699                            sections, FF_ARRAY_ELEMS(sections))) >= 0) {
3700         if (w == &xml_writer)
3701             wctx->string_validation_utf8_flags |= AV_UTF8_FLAG_EXCLUDE_XML_INVALID_CONTROL_CODES;
3702
3703         writer_print_section_header(wctx, SECTION_ID_ROOT);
3704
3705         if (do_show_program_version)
3706             ffprobe_show_program_version(wctx);
3707         if (do_show_library_versions)
3708             ffprobe_show_library_versions(wctx);
3709         if (do_show_pixel_formats)
3710             ffprobe_show_pixel_formats(wctx);
3711
3712         if (!input_filename &&
3713             ((do_show_format || do_show_programs || do_show_streams || do_show_chapters || do_show_packets || do_show_error) ||
3714              (!do_show_program_version && !do_show_library_versions && !do_show_pixel_formats))) {
3715             show_usage();
3716             av_log(NULL, AV_LOG_ERROR, "You have to specify one input file.\n");
3717             av_log(NULL, AV_LOG_ERROR, "Use -h to get full help or, even better, run 'man %s'.\n", program_name);
3718             ret = AVERROR(EINVAL);
3719         } else if (input_filename) {
3720             ret = probe_file(wctx, input_filename, print_input_filename);
3721             if (ret < 0 && do_show_error)
3722                 show_error(wctx, ret);
3723         }
3724
3725         writer_print_section_footer(wctx);
3726         writer_close(&wctx);
3727     }
3728
3729 end:
3730     av_freep(&print_format);
3731     av_freep(&read_intervals);
3732     av_hash_freep(&hash);
3733
3734     uninit_opts();
3735     for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
3736         av_dict_free(&(sections[i].entries_to_show));
3737
3738     avformat_network_deinit();
3739
3740     return ret < 0;
3741 }