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ffprobe.c

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00001 /*
00002  * Copyright (c) 2007-2010 Stefano Sabatini
00003  *
00004  * This file is part of FFmpeg.
00005  *
00006  * FFmpeg is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * FFmpeg is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with FFmpeg; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00019  */
00020 
00026 #include "config.h"
00027 #include "version.h"
00028 
00029 #include "libavformat/avformat.h"
00030 #include "libavcodec/avcodec.h"
00031 #include "libavutil/avstring.h"
00032 #include "libavutil/opt.h"
00033 #include "libavutil/pixdesc.h"
00034 #include "libavutil/dict.h"
00035 #include "libavdevice/avdevice.h"
00036 #include "libswscale/swscale.h"
00037 #include "libswresample/swresample.h"
00038 #include "libpostproc/postprocess.h"
00039 #include "cmdutils.h"
00040 
00041 const char program_name[] = "ffprobe";
00042 const int program_birth_year = 2007;
00043 
00044 static int do_show_error   = 0;
00045 static int do_show_format  = 0;
00046 static int do_show_frames  = 0;
00047 static int do_show_packets = 0;
00048 static int do_show_streams = 0;
00049 static int do_show_program_version  = 0;
00050 static int do_show_library_versions = 0;
00051 
00052 static int show_value_unit              = 0;
00053 static int use_value_prefix             = 0;
00054 static int use_byte_value_binary_prefix = 0;
00055 static int use_value_sexagesimal_format = 0;
00056 static int show_private_data            = 1;
00057 
00058 static char *print_format;
00059 
00060 static const OptionDef options[];
00061 
00062 /* FFprobe context */
00063 static const char *input_filename;
00064 static AVInputFormat *iformat = NULL;
00065 
00066 static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
00067 static const char *decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P"  };
00068 
00069 static const char *unit_second_str          = "s"    ;
00070 static const char *unit_hertz_str           = "Hz"   ;
00071 static const char *unit_byte_str            = "byte" ;
00072 static const char *unit_bit_per_second_str  = "bit/s";
00073 
00074 void av_noreturn exit_program(int ret)
00075 {
00076     exit(ret);
00077 }
00078 
00079 struct unit_value {
00080     union { double d; long long int i; } val;
00081     const char *unit;
00082 };
00083 
00084 static char *value_string(char *buf, int buf_size, struct unit_value uv)
00085 {
00086     double vald;
00087     int show_float = 0;
00088 
00089     if (uv.unit == unit_second_str) {
00090         vald = uv.val.d;
00091         show_float = 1;
00092     } else {
00093         vald = uv.val.i;
00094     }
00095 
00096     if (uv.unit == unit_second_str && use_value_sexagesimal_format) {
00097         double secs;
00098         int hours, mins;
00099         secs  = vald;
00100         mins  = (int)secs / 60;
00101         secs  = secs - mins * 60;
00102         hours = mins / 60;
00103         mins %= 60;
00104         snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
00105     } else {
00106         const char *prefix_string = "";
00107         int l;
00108 
00109         if (use_value_prefix && vald > 1) {
00110             long long int index;
00111 
00112             if (uv.unit == unit_byte_str && use_byte_value_binary_prefix) {
00113                 index = (long long int) (log(vald)/log(2)) / 10;
00114                 index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) - 1);
00115                 vald /= pow(2, index * 10);
00116                 prefix_string = binary_unit_prefixes[index];
00117             } else {
00118                 index = (long long int) (log10(vald)) / 3;
00119                 index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) - 1);
00120                 vald /= pow(10, index * 3);
00121                 prefix_string = decimal_unit_prefixes[index];
00122             }
00123         }
00124 
00125         if (show_float || (use_value_prefix && vald != (long long int)vald))
00126             l = snprintf(buf, buf_size, "%f", vald);
00127         else
00128             l = snprintf(buf, buf_size, "%lld", (long long int)vald);
00129         snprintf(buf+l, buf_size-l, "%s%s%s", *prefix_string || show_value_unit ? " " : "",
00130                  prefix_string, show_value_unit ? uv.unit : "");
00131     }
00132 
00133     return buf;
00134 }
00135 
00136 /* WRITERS API */
00137 
00138 typedef struct WriterContext WriterContext;
00139 
00140 #define WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS 1
00141 #define WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER 2
00142 
00143 typedef struct Writer {
00144     int priv_size;                  
00145     const char *name;
00146 
00147     int  (*init)  (WriterContext *wctx, const char *args, void *opaque);
00148     void (*uninit)(WriterContext *wctx);
00149 
00150     void (*print_header)(WriterContext *ctx);
00151     void (*print_footer)(WriterContext *ctx);
00152 
00153     void (*print_chapter_header)(WriterContext *wctx, const char *);
00154     void (*print_chapter_footer)(WriterContext *wctx, const char *);
00155     void (*print_section_header)(WriterContext *wctx, const char *);
00156     void (*print_section_footer)(WriterContext *wctx, const char *);
00157     void (*print_integer)       (WriterContext *wctx, const char *, long long int);
00158     void (*print_string)        (WriterContext *wctx, const char *, const char *);
00159     void (*show_tags)           (WriterContext *wctx, AVDictionary *dict);
00160     int flags;                  
00161 } Writer;
00162 
00163 struct WriterContext {
00164     const AVClass *class;           
00165     const Writer *writer;           
00166     char *name;                     
00167     void *priv;                     
00168     unsigned int nb_item;           
00169     unsigned int nb_section;        
00170     unsigned int nb_chapter;        
00171 };
00172 
00173 static const char *writer_get_name(void *p)
00174 {
00175     WriterContext *wctx = p;
00176     return wctx->writer->name;
00177 }
00178 
00179 static const AVClass writer_class = {
00180     "Writer",
00181     writer_get_name,
00182     NULL,
00183     LIBAVUTIL_VERSION_INT,
00184 };
00185 
00186 static void writer_close(WriterContext **wctx)
00187 {
00188     if (!*wctx)
00189         return;
00190 
00191     if ((*wctx)->writer->uninit)
00192         (*wctx)->writer->uninit(*wctx);
00193     av_freep(&((*wctx)->priv));
00194     av_freep(wctx);
00195 }
00196 
00197 static int writer_open(WriterContext **wctx, const Writer *writer,
00198                        const char *args, void *opaque)
00199 {
00200     int ret = 0;
00201 
00202     if (!(*wctx = av_malloc(sizeof(WriterContext)))) {
00203         ret = AVERROR(ENOMEM);
00204         goto fail;
00205     }
00206 
00207     if (!((*wctx)->priv = av_mallocz(writer->priv_size))) {
00208         ret = AVERROR(ENOMEM);
00209         goto fail;
00210     }
00211 
00212     (*wctx)->class = &writer_class;
00213     (*wctx)->writer = writer;
00214     if ((*wctx)->writer->init)
00215         ret = (*wctx)->writer->init(*wctx, args, opaque);
00216     if (ret < 0)
00217         goto fail;
00218 
00219     return 0;
00220 
00221 fail:
00222     writer_close(wctx);
00223     return ret;
00224 }
00225 
00226 static inline void writer_print_header(WriterContext *wctx)
00227 {
00228     if (wctx->writer->print_header)
00229         wctx->writer->print_header(wctx);
00230     wctx->nb_chapter = 0;
00231 }
00232 
00233 static inline void writer_print_footer(WriterContext *wctx)
00234 {
00235     if (wctx->writer->print_footer)
00236         wctx->writer->print_footer(wctx);
00237 }
00238 
00239 static inline void writer_print_chapter_header(WriterContext *wctx,
00240                                                const char *chapter)
00241 {
00242     if (wctx->writer->print_chapter_header)
00243         wctx->writer->print_chapter_header(wctx, chapter);
00244     wctx->nb_section = 0;
00245 }
00246 
00247 static inline void writer_print_chapter_footer(WriterContext *wctx,
00248                                                const char *chapter)
00249 {
00250     if (wctx->writer->print_chapter_footer)
00251         wctx->writer->print_chapter_footer(wctx, chapter);
00252     wctx->nb_chapter++;
00253 }
00254 
00255 static inline void writer_print_section_header(WriterContext *wctx,
00256                                                const char *section)
00257 {
00258     if (wctx->writer->print_section_header)
00259         wctx->writer->print_section_header(wctx, section);
00260     wctx->nb_item = 0;
00261 }
00262 
00263 static inline void writer_print_section_footer(WriterContext *wctx,
00264                                                const char *section)
00265 {
00266     if (wctx->writer->print_section_footer)
00267         wctx->writer->print_section_footer(wctx, section);
00268     wctx->nb_section++;
00269 }
00270 
00271 static inline void writer_print_integer(WriterContext *wctx,
00272                                         const char *key, long long int val)
00273 {
00274     wctx->writer->print_integer(wctx, key, val);
00275     wctx->nb_item++;
00276 }
00277 
00278 static inline void writer_print_string(WriterContext *wctx,
00279                                        const char *key, const char *val, int opt)
00280 {
00281     if (opt && !(wctx->writer->flags & WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS))
00282         return;
00283     wctx->writer->print_string(wctx, key, val);
00284     wctx->nb_item++;
00285 }
00286 
00287 static void writer_print_time(WriterContext *wctx, const char *key,
00288                               int64_t ts, const AVRational *time_base)
00289 {
00290     char buf[128];
00291 
00292     if (ts == AV_NOPTS_VALUE) {
00293         writer_print_string(wctx, key, "N/A", 1);
00294     } else {
00295         double d = ts * av_q2d(*time_base);
00296         value_string(buf, sizeof(buf), (struct unit_value){.val.d=d, .unit=unit_second_str});
00297         writer_print_string(wctx, key, buf, 0);
00298     }
00299 }
00300 
00301 static void writer_print_ts(WriterContext *wctx, const char *key, int64_t ts)
00302 {
00303     if (ts == AV_NOPTS_VALUE) {
00304         writer_print_string(wctx, key, "N/A", 1);
00305     } else {
00306         writer_print_integer(wctx, key, ts);
00307     }
00308 }
00309 
00310 static inline void writer_show_tags(WriterContext *wctx, AVDictionary *dict)
00311 {
00312     wctx->writer->show_tags(wctx, dict);
00313 }
00314 
00315 #define MAX_REGISTERED_WRITERS_NB 64
00316 
00317 static const Writer *registered_writers[MAX_REGISTERED_WRITERS_NB + 1];
00318 
00319 static int writer_register(const Writer *writer)
00320 {
00321     static int next_registered_writer_idx = 0;
00322 
00323     if (next_registered_writer_idx == MAX_REGISTERED_WRITERS_NB)
00324         return AVERROR(ENOMEM);
00325 
00326     registered_writers[next_registered_writer_idx++] = writer;
00327     return 0;
00328 }
00329 
00330 static const Writer *writer_get_by_name(const char *name)
00331 {
00332     int i;
00333 
00334     for (i = 0; registered_writers[i]; i++)
00335         if (!strcmp(registered_writers[i]->name, name))
00336             return registered_writers[i];
00337 
00338     return NULL;
00339 }
00340 
00341 /* Print helpers */
00342 
00343 struct print_buf {
00344     char *s;
00345     int len;
00346 };
00347 
00348 static char *fast_asprintf(struct print_buf *pbuf, const char *fmt, ...)
00349 {
00350     va_list va;
00351     int len;
00352 
00353     va_start(va, fmt);
00354     len = vsnprintf(NULL, 0, fmt, va);
00355     va_end(va);
00356     if (len < 0)
00357         goto fail;
00358 
00359     if (pbuf->len < len) {
00360         char *p = av_realloc(pbuf->s, len + 1);
00361         if (!p)
00362             goto fail;
00363         pbuf->s   = p;
00364         pbuf->len = len;
00365     }
00366 
00367     va_start(va, fmt);
00368     len = vsnprintf(pbuf->s, len + 1, fmt, va);
00369     va_end(va);
00370     if (len < 0)
00371         goto fail;
00372     return pbuf->s;
00373 
00374 fail:
00375     av_freep(&pbuf->s);
00376     pbuf->len = 0;
00377     return NULL;
00378 }
00379 
00380 #define ESCAPE_INIT_BUF_SIZE 256
00381 
00382 #define ESCAPE_CHECK_SIZE(src, size, max_size)                          \
00383     if (size > max_size) {                                              \
00384         char buf[64];                                                   \
00385         snprintf(buf, sizeof(buf), "%s", src);                          \
00386         av_log(log_ctx, AV_LOG_WARNING,                                 \
00387                "String '%s...' with is too big\n", buf);                \
00388         return "FFPROBE_TOO_BIG_STRING";                                \
00389     }
00390 
00391 #define ESCAPE_REALLOC_BUF(dst_size_p, dst_p, src, size)                \
00392     if (*dst_size_p < size) {                                           \
00393         char *q = av_realloc(*dst_p, size);                             \
00394         if (!q) {                                                       \
00395             char buf[64];                                               \
00396             snprintf(buf, sizeof(buf), "%s", src);                      \
00397             av_log(log_ctx, AV_LOG_WARNING,                             \
00398                    "String '%s...' could not be escaped\n", buf);       \
00399             return "FFPROBE_THIS_STRING_COULD_NOT_BE_ESCAPED";          \
00400         }                                                               \
00401         *dst_size_p = size;                                             \
00402         *dst = q;                                                       \
00403     }
00404 
00405 /* WRITERS */
00406 
00407 /* Default output */
00408 
00409 static void default_print_footer(WriterContext *wctx)
00410 {
00411     printf("\n");
00412 }
00413 
00414 static void default_print_chapter_header(WriterContext *wctx, const char *chapter)
00415 {
00416     if (wctx->nb_chapter)
00417         printf("\n");
00418 }
00419 
00420 /* lame uppercasing routine, assumes the string is lower case ASCII */
00421 static inline char *upcase_string(char *dst, size_t dst_size, const char *src)
00422 {
00423     int i;
00424     for (i = 0; src[i] && i < dst_size-1; i++)
00425         dst[i] = av_toupper(src[i]);
00426     dst[i] = 0;
00427     return dst;
00428 }
00429 
00430 static void default_print_section_header(WriterContext *wctx, const char *section)
00431 {
00432     char buf[32];
00433 
00434     if (wctx->nb_section)
00435         printf("\n");
00436     printf("[%s]\n", upcase_string(buf, sizeof(buf), section));
00437 }
00438 
00439 static void default_print_section_footer(WriterContext *wctx, const char *section)
00440 {
00441     char buf[32];
00442 
00443     printf("[/%s]", upcase_string(buf, sizeof(buf), section));
00444 }
00445 
00446 static void default_print_str(WriterContext *wctx, const char *key, const char *value)
00447 {
00448     printf("%s=%s\n", key, value);
00449 }
00450 
00451 static void default_print_int(WriterContext *wctx, const char *key, long long int value)
00452 {
00453     printf("%s=%lld\n", key, value);
00454 }
00455 
00456 static void default_show_tags(WriterContext *wctx, AVDictionary *dict)
00457 {
00458     AVDictionaryEntry *tag = NULL;
00459     while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
00460         printf("TAG:");
00461         writer_print_string(wctx, tag->key, tag->value, 0);
00462     }
00463 }
00464 
00465 static const Writer default_writer = {
00466     .name                  = "default",
00467     .print_footer          = default_print_footer,
00468     .print_chapter_header  = default_print_chapter_header,
00469     .print_section_header  = default_print_section_header,
00470     .print_section_footer  = default_print_section_footer,
00471     .print_integer         = default_print_int,
00472     .print_string          = default_print_str,
00473     .show_tags             = default_show_tags,
00474     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
00475 };
00476 
00477 /* Compact output */
00478 
00483 static const char *c_escape_str(char **dst, size_t *dst_size,
00484                                 const char *src, const char sep, void *log_ctx)
00485 {
00486     const char *p;
00487     char *q;
00488     size_t size = 1;
00489 
00490     /* precompute size */
00491     for (p = src; *p; p++, size++) {
00492         ESCAPE_CHECK_SIZE(src, size, SIZE_MAX-2);
00493         if (*p == '\n' || *p == '\r' || *p == '\\')
00494             size++;
00495     }
00496 
00497     ESCAPE_REALLOC_BUF(dst_size, dst, src, size);
00498 
00499     q = *dst;
00500     for (p = src; *p; p++) {
00501         switch (*src) {
00502         case '\n': *q++ = '\\'; *q++ = 'n';  break;
00503         case '\r': *q++ = '\\'; *q++ = 'r';  break;
00504         case '\\': *q++ = '\\'; *q++ = '\\'; break;
00505         default:
00506             if (*p == sep)
00507                 *q++ = '\\';
00508             *q++ = *p;
00509         }
00510     }
00511     *q = 0;
00512     return *dst;
00513 }
00514 
00518 static const char *csv_escape_str(char **dst, size_t *dst_size,
00519                                   const char *src, const char sep, void *log_ctx)
00520 {
00521     const char *p;
00522     char *q;
00523     size_t size = 1;
00524     int quote = 0;
00525 
00526     /* precompute size */
00527     for (p = src; *p; p++, size++) {
00528         ESCAPE_CHECK_SIZE(src, size, SIZE_MAX-4);
00529         if (*p == '"' || *p == sep || *p == '\n' || *p == '\r')
00530             if (!quote) {
00531                 quote = 1;
00532                 size += 2;
00533             }
00534         if (*p == '"')
00535             size++;
00536     }
00537 
00538     ESCAPE_REALLOC_BUF(dst_size, dst, src, size);
00539 
00540     q = *dst;
00541     p = src;
00542     if (quote)
00543         *q++ = '\"';
00544     while (*p) {
00545         if (*p == '"')
00546             *q++ = '\"';
00547         *q++ = *p++;
00548     }
00549     if (quote)
00550         *q++ = '\"';
00551     *q = 0;
00552 
00553     return *dst;
00554 }
00555 
00556 static const char *none_escape_str(char **dst, size_t *dst_size,
00557                                    const char *src, const char sep, void *log_ctx)
00558 {
00559     return src;
00560 }
00561 
00562 typedef struct CompactContext {
00563     const AVClass *class;
00564     char *item_sep_str;
00565     char item_sep;
00566     int nokey;
00567     char  *buf;
00568     size_t buf_size;
00569     char *escape_mode_str;
00570     const char * (*escape_str)(char **dst, size_t *dst_size,
00571                                const char *src, const char sep, void *log_ctx);
00572 } CompactContext;
00573 
00574 #define OFFSET(x) offsetof(CompactContext, x)
00575 
00576 static const AVOption compact_options[]= {
00577     {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  CHAR_MIN, CHAR_MAX },
00578     {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  CHAR_MIN, CHAR_MAX },
00579     {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_INT,    {.dbl=0},    0,        1        },
00580     {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_INT,    {.dbl=0},    0,        1        },
00581     {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  CHAR_MIN, CHAR_MAX },
00582     {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  CHAR_MIN, CHAR_MAX },
00583     {NULL},
00584 };
00585 
00586 static const char *compact_get_name(void *ctx)
00587 {
00588     return "compact";
00589 }
00590 
00591 static const AVClass compact_class = {
00592     "CompactContext",
00593     compact_get_name,
00594     compact_options
00595 };
00596 
00597 static av_cold int compact_init(WriterContext *wctx, const char *args, void *opaque)
00598 {
00599     CompactContext *compact = wctx->priv;
00600     int err;
00601 
00602     compact->class = &compact_class;
00603     av_opt_set_defaults(compact);
00604 
00605     if (args &&
00606         (err = (av_set_options_string(compact, args, "=", ":"))) < 0) {
00607         av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
00608         return err;
00609     }
00610     if (strlen(compact->item_sep_str) != 1) {
00611         av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
00612                compact->item_sep_str);
00613         return AVERROR(EINVAL);
00614     }
00615     compact->item_sep = compact->item_sep_str[0];
00616 
00617     compact->buf_size = ESCAPE_INIT_BUF_SIZE;
00618     if (!(compact->buf = av_malloc(compact->buf_size)))
00619         return AVERROR(ENOMEM);
00620 
00621     if      (!strcmp(compact->escape_mode_str, "none")) compact->escape_str = none_escape_str;
00622     else if (!strcmp(compact->escape_mode_str, "c"   )) compact->escape_str = c_escape_str;
00623     else if (!strcmp(compact->escape_mode_str, "csv" )) compact->escape_str = csv_escape_str;
00624     else {
00625         av_log(wctx, AV_LOG_ERROR, "Unknown escape mode '%s'\n", compact->escape_mode_str);
00626         return AVERROR(EINVAL);
00627     }
00628 
00629     return 0;
00630 }
00631 
00632 static av_cold void compact_uninit(WriterContext *wctx)
00633 {
00634     CompactContext *compact = wctx->priv;
00635 
00636     av_freep(&compact->item_sep_str);
00637     av_freep(&compact->buf);
00638     av_freep(&compact->escape_mode_str);
00639 }
00640 
00641 static void compact_print_section_header(WriterContext *wctx, const char *section)
00642 {
00643     CompactContext *compact = wctx->priv;
00644 
00645     printf("%s%c", section, compact->item_sep);
00646 }
00647 
00648 static void compact_print_section_footer(WriterContext *wctx, const char *section)
00649 {
00650     printf("\n");
00651 }
00652 
00653 static void compact_print_str(WriterContext *wctx, const char *key, const char *value)
00654 {
00655     CompactContext *compact = wctx->priv;
00656 
00657     if (wctx->nb_item) printf("%c", compact->item_sep);
00658     if (!compact->nokey)
00659         printf("%s=", key);
00660     printf("%s", compact->escape_str(&compact->buf, &compact->buf_size,
00661                                      value, compact->item_sep, wctx));
00662 }
00663 
00664 static void compact_print_int(WriterContext *wctx, const char *key, long long int value)
00665 {
00666     CompactContext *compact = wctx->priv;
00667 
00668     if (wctx->nb_item) printf("%c", compact->item_sep);
00669     if (!compact->nokey)
00670         printf("%s=", key);
00671     printf("%lld", value);
00672 }
00673 
00674 static void compact_show_tags(WriterContext *wctx, AVDictionary *dict)
00675 {
00676     CompactContext *compact = wctx->priv;
00677     AVDictionaryEntry *tag = NULL;
00678 
00679     while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
00680         if (wctx->nb_item) printf("%c", compact->item_sep);
00681         if (!compact->nokey)
00682             printf("tag:%s=", compact->escape_str(&compact->buf, &compact->buf_size,
00683                                                   tag->key, compact->item_sep, wctx));
00684         printf("%s", compact->escape_str(&compact->buf, &compact->buf_size,
00685                                          tag->value, compact->item_sep, wctx));
00686     }
00687 }
00688 
00689 static const Writer compact_writer = {
00690     .name                 = "compact",
00691     .priv_size            = sizeof(CompactContext),
00692     .init                 = compact_init,
00693     .uninit               = compact_uninit,
00694     .print_section_header = compact_print_section_header,
00695     .print_section_footer = compact_print_section_footer,
00696     .print_integer        = compact_print_int,
00697     .print_string         = compact_print_str,
00698     .show_tags            = compact_show_tags,
00699     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
00700 };
00701 
00702 /* CSV output */
00703 
00704 static av_cold int csv_init(WriterContext *wctx, const char *args, void *opaque)
00705 {
00706     return compact_init(wctx, "item_sep=,:nokey=1:escape=csv", opaque);
00707 }
00708 
00709 static const Writer csv_writer = {
00710     .name                 = "csv",
00711     .priv_size            = sizeof(CompactContext),
00712     .init                 = csv_init,
00713     .uninit               = compact_uninit,
00714     .print_section_header = compact_print_section_header,
00715     .print_section_footer = compact_print_section_footer,
00716     .print_integer        = compact_print_int,
00717     .print_string         = compact_print_str,
00718     .show_tags            = compact_show_tags,
00719     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
00720 };
00721 
00722 /* JSON output */
00723 
00724 typedef struct {
00725     const AVClass *class;
00726     int multiple_entries; 
00727     char *buf;
00728     size_t buf_size;
00729     int print_packets_and_frames;
00730     int indent_level;
00731     int compact;
00732     const char *item_sep, *item_start_end;
00733 } JSONContext;
00734 
00735 #undef OFFSET
00736 #define OFFSET(x) offsetof(JSONContext, x)
00737 
00738 static const AVOption json_options[]= {
00739     { "compact", "enable compact output", OFFSET(compact), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
00740     { "c",       "enable compact output", OFFSET(compact), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
00741     { NULL }
00742 };
00743 
00744 static const char *json_get_name(void *ctx)
00745 {
00746     return "json";
00747 }
00748 
00749 static const AVClass json_class = {
00750     "JSONContext",
00751     json_get_name,
00752     json_options
00753 };
00754 
00755 static av_cold int json_init(WriterContext *wctx, const char *args, void *opaque)
00756 {
00757     JSONContext *json = wctx->priv;
00758     int err;
00759 
00760     json->class = &json_class;
00761     av_opt_set_defaults(json);
00762 
00763     if (args &&
00764         (err = (av_set_options_string(json, args, "=", ":"))) < 0) {
00765         av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
00766         return err;
00767     }
00768 
00769     json->item_sep       = json->compact ? ", " : ",\n";
00770     json->item_start_end = json->compact ? " "  : "\n";
00771 
00772     json->buf_size = ESCAPE_INIT_BUF_SIZE;
00773     if (!(json->buf = av_malloc(json->buf_size)))
00774         return AVERROR(ENOMEM);
00775 
00776     return 0;
00777 }
00778 
00779 static av_cold void json_uninit(WriterContext *wctx)
00780 {
00781     JSONContext *json = wctx->priv;
00782     av_freep(&json->buf);
00783 }
00784 
00785 static const char *json_escape_str(char **dst, size_t *dst_size, const char *src,
00786                                    void *log_ctx)
00787 {
00788     static const char json_escape[] = {'"', '\\', '\b', '\f', '\n', '\r', '\t', 0};
00789     static const char json_subst[]  = {'"', '\\',  'b',  'f',  'n',  'r',  't', 0};
00790     const char *p;
00791     char *q;
00792     size_t size = 1;
00793 
00794     // compute the length of the escaped string
00795     for (p = src; *p; p++) {
00796         ESCAPE_CHECK_SIZE(src, size, SIZE_MAX-6);
00797         if (strchr(json_escape, *p))     size += 2; // simple escape
00798         else if ((unsigned char)*p < 32) size += 6; // handle non-printable chars
00799         else                             size += 1; // char copy
00800     }
00801     ESCAPE_REALLOC_BUF(dst_size, dst, src, size);
00802 
00803     q = *dst;
00804     for (p = src; *p; p++) {
00805         char *s = strchr(json_escape, *p);
00806         if (s) {
00807             *q++ = '\\';
00808             *q++ = json_subst[s - json_escape];
00809         } else if ((unsigned char)*p < 32) {
00810             snprintf(q, 7, "\\u00%02x", *p & 0xff);
00811             q += 6;
00812         } else {
00813             *q++ = *p;
00814         }
00815     }
00816     *q = 0;
00817     return *dst;
00818 }
00819 
00820 static void json_print_header(WriterContext *wctx)
00821 {
00822     JSONContext *json = wctx->priv;
00823     printf("{");
00824     json->indent_level++;
00825 }
00826 
00827 static void json_print_footer(WriterContext *wctx)
00828 {
00829     JSONContext *json = wctx->priv;
00830     json->indent_level--;
00831     printf("\n}\n");
00832 }
00833 
00834 #define JSON_INDENT() printf("%*c", json->indent_level * 4, ' ')
00835 
00836 static void json_print_chapter_header(WriterContext *wctx, const char *chapter)
00837 {
00838     JSONContext *json = wctx->priv;
00839 
00840     if (wctx->nb_chapter)
00841         printf(",");
00842     printf("\n");
00843     json->multiple_entries = !strcmp(chapter, "packets") || !strcmp(chapter, "frames" ) ||
00844                              !strcmp(chapter, "packets_and_frames") ||
00845                              !strcmp(chapter, "streams") || !strcmp(chapter, "library_versions");
00846     if (json->multiple_entries) {
00847         JSON_INDENT();
00848         printf("\"%s\": [\n", json_escape_str(&json->buf, &json->buf_size, chapter, wctx));
00849         json->print_packets_and_frames = !strcmp(chapter, "packets_and_frames");
00850         json->indent_level++;
00851     }
00852 }
00853 
00854 static void json_print_chapter_footer(WriterContext *wctx, const char *chapter)
00855 {
00856     JSONContext *json = wctx->priv;
00857 
00858     if (json->multiple_entries) {
00859         printf("\n");
00860         json->indent_level--;
00861         JSON_INDENT();
00862         printf("]");
00863     }
00864 }
00865 
00866 static void json_print_section_header(WriterContext *wctx, const char *section)
00867 {
00868     JSONContext *json = wctx->priv;
00869 
00870     if (wctx->nb_section)
00871         printf(",\n");
00872     JSON_INDENT();
00873     if (!json->multiple_entries)
00874         printf("\"%s\": ", section);
00875     printf("{%s", json->item_start_end);
00876     json->indent_level++;
00877     /* this is required so the parser can distinguish between packets and frames */
00878     if (json->print_packets_and_frames) {
00879         if (!json->compact)
00880             JSON_INDENT();
00881         printf("\"type\": \"%s\"%s", section, json->item_sep);
00882     }
00883 }
00884 
00885 static void json_print_section_footer(WriterContext *wctx, const char *section)
00886 {
00887     JSONContext *json = wctx->priv;
00888 
00889     printf("%s", json->item_start_end);
00890     json->indent_level--;
00891     if (!json->compact)
00892         JSON_INDENT();
00893     printf("}");
00894 }
00895 
00896 static inline void json_print_item_str(WriterContext *wctx,
00897                                        const char *key, const char *value)
00898 {
00899     JSONContext *json = wctx->priv;
00900 
00901     printf("\"%s\":", json_escape_str(&json->buf, &json->buf_size, key,   wctx));
00902     printf(" \"%s\"", json_escape_str(&json->buf, &json->buf_size, value, wctx));
00903 }
00904 
00905 static void json_print_str(WriterContext *wctx, const char *key, const char *value)
00906 {
00907     JSONContext *json = wctx->priv;
00908 
00909     if (wctx->nb_item) printf("%s", json->item_sep);
00910     if (!json->compact)
00911         JSON_INDENT();
00912     json_print_item_str(wctx, key, value);
00913 }
00914 
00915 static void json_print_int(WriterContext *wctx, const char *key, long long int value)
00916 {
00917     JSONContext *json = wctx->priv;
00918 
00919     if (wctx->nb_item) printf("%s", json->item_sep);
00920     if (!json->compact)
00921         JSON_INDENT();
00922     printf("\"%s\": %lld",
00923            json_escape_str(&json->buf, &json->buf_size, key, wctx), value);
00924 }
00925 
00926 static void json_show_tags(WriterContext *wctx, AVDictionary *dict)
00927 {
00928     JSONContext *json = wctx->priv;
00929     AVDictionaryEntry *tag = NULL;
00930     int is_first = 1;
00931     if (!dict)
00932         return;
00933     printf("%s", json->item_sep);
00934     if (!json->compact)
00935         JSON_INDENT();
00936     printf("\"tags\": {%s", json->item_start_end);
00937     json->indent_level++;
00938     while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
00939         if (is_first) is_first = 0;
00940         else          printf("%s", json->item_sep);
00941         if (!json->compact)
00942             JSON_INDENT();
00943         json_print_item_str(wctx, tag->key, tag->value);
00944     }
00945     json->indent_level--;
00946     printf("%s", json->item_start_end);
00947     if (!json->compact)
00948         JSON_INDENT();
00949     printf("}");
00950 }
00951 
00952 static const Writer json_writer = {
00953     .name                 = "json",
00954     .priv_size            = sizeof(JSONContext),
00955     .init                 = json_init,
00956     .uninit               = json_uninit,
00957     .print_header         = json_print_header,
00958     .print_footer         = json_print_footer,
00959     .print_chapter_header = json_print_chapter_header,
00960     .print_chapter_footer = json_print_chapter_footer,
00961     .print_section_header = json_print_section_header,
00962     .print_section_footer = json_print_section_footer,
00963     .print_integer        = json_print_int,
00964     .print_string         = json_print_str,
00965     .show_tags            = json_show_tags,
00966     .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
00967 };
00968 
00969 /* XML output */
00970 
00971 typedef struct {
00972     const AVClass *class;
00973     int within_tag;
00974     int multiple_entries; 
00975     int indent_level;
00976     int fully_qualified;
00977     int xsd_strict;
00978     char *buf;
00979     size_t buf_size;
00980 } XMLContext;
00981 
00982 #undef OFFSET
00983 #define OFFSET(x) offsetof(XMLContext, x)
00984 
00985 static const AVOption xml_options[] = {
00986     {"fully_qualified", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_INT, {.dbl=0},  0, 1 },
00987     {"q",               "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_INT, {.dbl=0},  0, 1 },
00988     {"xsd_strict",      "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_INT, {.dbl=0},  0, 1 },
00989     {"x",               "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_INT, {.dbl=0},  0, 1 },
00990     {NULL},
00991 };
00992 
00993 static const char *xml_get_name(void *ctx)
00994 {
00995     return "xml";
00996 }
00997 
00998 static const AVClass xml_class = {
00999     "XMLContext",
01000     xml_get_name,
01001     xml_options
01002 };
01003 
01004 static av_cold int xml_init(WriterContext *wctx, const char *args, void *opaque)
01005 {
01006     XMLContext *xml = wctx->priv;
01007     int err;
01008 
01009     xml->class = &xml_class;
01010     av_opt_set_defaults(xml);
01011 
01012     if (args &&
01013         (err = (av_set_options_string(xml, args, "=", ":"))) < 0) {
01014         av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
01015         return err;
01016     }
01017 
01018     if (xml->xsd_strict) {
01019         xml->fully_qualified = 1;
01020 #define CHECK_COMPLIANCE(opt, opt_name)                                 \
01021         if (opt) {                                                      \
01022             av_log(wctx, AV_LOG_ERROR,                                  \
01023                    "XSD-compliant output selected but option '%s' was selected, XML output may be non-compliant.\n" \
01024                    "You need to disable such option with '-no%s'\n", opt_name, opt_name); \
01025             return AVERROR(EINVAL);                                     \
01026         }
01027         CHECK_COMPLIANCE(show_private_data, "private");
01028         CHECK_COMPLIANCE(show_value_unit,   "unit");
01029         CHECK_COMPLIANCE(use_value_prefix,  "prefix");
01030 
01031         if (do_show_frames && do_show_packets) {
01032             av_log(wctx, AV_LOG_ERROR,
01033                    "Interleaved frames and packets are not allowed in XSD. "
01034                    "Select only one between the -show_frames and the -show_packets options.\n");
01035             return AVERROR(EINVAL);
01036         }
01037     }
01038 
01039     xml->buf_size = ESCAPE_INIT_BUF_SIZE;
01040     if (!(xml->buf = av_malloc(xml->buf_size)))
01041         return AVERROR(ENOMEM);
01042     return 0;
01043 }
01044 
01045 static av_cold void xml_uninit(WriterContext *wctx)
01046 {
01047     XMLContext *xml = wctx->priv;
01048     av_freep(&xml->buf);
01049 }
01050 
01051 static const char *xml_escape_str(char **dst, size_t *dst_size, const char *src,
01052                                   void *log_ctx)
01053 {
01054     const char *p;
01055     char *q;
01056     size_t size = 1;
01057 
01058     /* precompute size */
01059     for (p = src; *p; p++, size++) {
01060         ESCAPE_CHECK_SIZE(src, size, SIZE_MAX-10);
01061         switch (*p) {
01062         case '&' : size += strlen("&amp;");  break;
01063         case '<' : size += strlen("&lt;");   break;
01064         case '>' : size += strlen("&gt;");   break;
01065         case '\"': size += strlen("&quot;"); break;
01066         case '\'': size += strlen("&apos;"); break;
01067         default: size++;
01068         }
01069     }
01070     ESCAPE_REALLOC_BUF(dst_size, dst, src, size);
01071 
01072 #define COPY_STR(str) {      \
01073         const char *s = str; \
01074         while (*s)           \
01075             *q++ = *s++;     \
01076     }
01077 
01078     p = src;
01079     q = *dst;
01080     while (*p) {
01081         switch (*p) {
01082         case '&' : COPY_STR("&amp;");  break;
01083         case '<' : COPY_STR("&lt;");   break;
01084         case '>' : COPY_STR("&gt;");   break;
01085         case '\"': COPY_STR("&quot;"); break;
01086         case '\'': COPY_STR("&apos;"); break;
01087         default: *q++ = *p;
01088         }
01089         p++;
01090     }
01091     *q = 0;
01092 
01093     return *dst;
01094 }
01095 
01096 static void xml_print_header(WriterContext *wctx)
01097 {
01098     XMLContext *xml = wctx->priv;
01099     const char *qual = " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' "
01100         "xmlns:ffprobe='http://www.ffmpeg.org/schema/ffprobe' "
01101         "xsi:schemaLocation='http://www.ffmpeg.org/schema/ffprobe ffprobe.xsd'";
01102 
01103     printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
01104     printf("<%sffprobe%s>\n",
01105            xml->fully_qualified ? "ffprobe:" : "",
01106            xml->fully_qualified ? qual : "");
01107 
01108     xml->indent_level++;
01109 }
01110 
01111 static void xml_print_footer(WriterContext *wctx)
01112 {
01113     XMLContext *xml = wctx->priv;
01114 
01115     xml->indent_level--;
01116     printf("</%sffprobe>\n", xml->fully_qualified ? "ffprobe:" : "");
01117 }
01118 
01119 #define XML_INDENT() printf("%*c", xml->indent_level * 4, ' ')
01120 
01121 static void xml_print_chapter_header(WriterContext *wctx, const char *chapter)
01122 {
01123     XMLContext *xml = wctx->priv;
01124 
01125     if (wctx->nb_chapter)
01126         printf("\n");
01127     xml->multiple_entries = !strcmp(chapter, "packets") || !strcmp(chapter, "frames") ||
01128                             !strcmp(chapter, "packets_and_frames") ||
01129                             !strcmp(chapter, "streams") || !strcmp(chapter, "library_versions");
01130 
01131     if (xml->multiple_entries) {
01132         XML_INDENT(); printf("<%s>\n", chapter);
01133         xml->indent_level++;
01134     }
01135 }
01136 
01137 static void xml_print_chapter_footer(WriterContext *wctx, const char *chapter)
01138 {
01139     XMLContext *xml = wctx->priv;
01140 
01141     if (xml->multiple_entries) {
01142         xml->indent_level--;
01143         XML_INDENT(); printf("</%s>\n", chapter);
01144     }
01145 }
01146 
01147 static void xml_print_section_header(WriterContext *wctx, const char *section)
01148 {
01149     XMLContext *xml = wctx->priv;
01150 
01151     XML_INDENT(); printf("<%s ", section);
01152     xml->within_tag = 1;
01153 }
01154 
01155 static void xml_print_section_footer(WriterContext *wctx, const char *section)
01156 {
01157     XMLContext *xml = wctx->priv;
01158 
01159     if (xml->within_tag)
01160         printf("/>\n");
01161     else {
01162         XML_INDENT(); printf("</%s>\n", section);
01163     }
01164 }
01165 
01166 static void xml_print_str(WriterContext *wctx, const char *key, const char *value)
01167 {
01168     XMLContext *xml = wctx->priv;
01169 
01170     if (wctx->nb_item)
01171         printf(" ");
01172     printf("%s=\"%s\"", key, xml_escape_str(&xml->buf, &xml->buf_size, value, wctx));
01173 }
01174 
01175 static void xml_print_int(WriterContext *wctx, const char *key, long long int value)
01176 {
01177     if (wctx->nb_item)
01178         printf(" ");
01179     printf("%s=\"%lld\"", key, value);
01180 }
01181 
01182 static void xml_show_tags(WriterContext *wctx, AVDictionary *dict)
01183 {
01184     XMLContext *xml = wctx->priv;
01185     AVDictionaryEntry *tag = NULL;
01186     int is_first = 1;
01187 
01188     xml->indent_level++;
01189     while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
01190         if (is_first) {
01191             /* close section tag */
01192             printf(">\n");
01193             xml->within_tag = 0;
01194             is_first = 0;
01195         }
01196         XML_INDENT();
01197         printf("<tag key=\"%s\"",
01198                xml_escape_str(&xml->buf, &xml->buf_size, tag->key,   wctx));
01199         printf(" value=\"%s\"/>\n",
01200                xml_escape_str(&xml->buf, &xml->buf_size, tag->value, wctx));
01201     }
01202     xml->indent_level--;
01203 }
01204 
01205 static Writer xml_writer = {
01206     .name                 = "xml",
01207     .priv_size            = sizeof(XMLContext),
01208     .init                 = xml_init,
01209     .uninit               = xml_uninit,
01210     .print_header         = xml_print_header,
01211     .print_footer         = xml_print_footer,
01212     .print_chapter_header = xml_print_chapter_header,
01213     .print_chapter_footer = xml_print_chapter_footer,
01214     .print_section_header = xml_print_section_header,
01215     .print_section_footer = xml_print_section_footer,
01216     .print_integer        = xml_print_int,
01217     .print_string         = xml_print_str,
01218     .show_tags            = xml_show_tags,
01219     .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
01220 };
01221 
01222 static void writer_register_all(void)
01223 {
01224     static int initialized;
01225 
01226     if (initialized)
01227         return;
01228     initialized = 1;
01229 
01230     writer_register(&default_writer);
01231     writer_register(&compact_writer);
01232     writer_register(&csv_writer);
01233     writer_register(&json_writer);
01234     writer_register(&xml_writer);
01235 }
01236 
01237 #define print_fmt(k, f, ...) do {              \
01238     if (fast_asprintf(&pbuf, f, __VA_ARGS__))  \
01239         writer_print_string(w, k, pbuf.s, 0);  \
01240 } while (0)
01241 
01242 #define print_fmt_opt(k, f, ...) do {          \
01243     if (fast_asprintf(&pbuf, f, __VA_ARGS__))  \
01244         writer_print_string(w, k, pbuf.s, 1);  \
01245 } while (0)
01246 
01247 #define print_int(k, v)         writer_print_integer(w, k, v)
01248 #define print_str(k, v)         writer_print_string(w, k, v, 0)
01249 #define print_str_opt(k, v)     writer_print_string(w, k, v, 1)
01250 #define print_time(k, v, tb)    writer_print_time(w, k, v, tb)
01251 #define print_ts(k, v)          writer_print_ts(w, k, v)
01252 #define print_val(k, v, u)      writer_print_string(w, k, \
01253     value_string(val_str, sizeof(val_str), (struct unit_value){.val.i = v, .unit=u}), 0)
01254 #define print_section_header(s) writer_print_section_header(w, s)
01255 #define print_section_footer(s) writer_print_section_footer(w, s)
01256 #define show_tags(metadata)     writer_show_tags(w, metadata)
01257 
01258 static void show_packet(WriterContext *w, AVFormatContext *fmt_ctx, AVPacket *pkt, int packet_idx)
01259 {
01260     char val_str[128];
01261     AVStream *st = fmt_ctx->streams[pkt->stream_index];
01262     struct print_buf pbuf = {.s = NULL};
01263     const char *s;
01264 
01265     print_section_header("packet");
01266     s = av_get_media_type_string(st->codec->codec_type);
01267     if (s) print_str    ("codec_type", s);
01268     else   print_str_opt("codec_type", "unknown");
01269     print_int("stream_index",     pkt->stream_index);
01270     print_ts  ("pts",             pkt->pts);
01271     print_time("pts_time",        pkt->pts, &st->time_base);
01272     print_ts  ("dts",             pkt->dts);
01273     print_time("dts_time",        pkt->dts, &st->time_base);
01274     print_ts  ("duration",        pkt->duration);
01275     print_time("duration_time",   pkt->duration, &st->time_base);
01276     print_val("size",             pkt->size, unit_byte_str);
01277     if (pkt->pos != -1) print_fmt    ("pos", "%"PRId64, pkt->pos);
01278     else                print_str_opt("pos", "N/A");
01279     print_fmt("flags", "%c",      pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
01280     print_section_footer("packet");
01281 
01282     av_free(pbuf.s);
01283     fflush(stdout);
01284 }
01285 
01286 static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream)
01287 {
01288     struct print_buf pbuf = {.s = NULL};
01289     const char *s;
01290 
01291     print_section_header("frame");
01292 
01293     s = av_get_media_type_string(stream->codec->codec_type);
01294     if (s) print_str    ("media_type", s);
01295     else   print_str_opt("media_type", "unknown");
01296     print_int("key_frame",              frame->key_frame);
01297     print_ts  ("pkt_pts",               frame->pkt_pts);
01298     print_time("pkt_pts_time",          frame->pkt_pts, &stream->time_base);
01299     print_ts  ("pkt_dts",               frame->pkt_dts);
01300     print_time("pkt_dts_time",          frame->pkt_dts, &stream->time_base);
01301     if (frame->pkt_pos != -1) print_fmt    ("pkt_pos", "%"PRId64, frame->pkt_pos);
01302     else                      print_str_opt("pkt_pos", "N/A");
01303 
01304     switch (stream->codec->codec_type) {
01305     case AVMEDIA_TYPE_VIDEO:
01306         print_int("width",                  frame->width);
01307         print_int("height",                 frame->height);
01308         s = av_get_pix_fmt_name(frame->format);
01309         if (s) print_str    ("pix_fmt", s);
01310         else   print_str_opt("pix_fmt", "unknown");
01311         if (frame->sample_aspect_ratio.num) {
01312             print_fmt("sample_aspect_ratio", "%d:%d",
01313                       frame->sample_aspect_ratio.num,
01314                       frame->sample_aspect_ratio.den);
01315         } else {
01316             print_str_opt("sample_aspect_ratio", "N/A");
01317         }
01318         print_fmt("pict_type",              "%c", av_get_picture_type_char(frame->pict_type));
01319         print_int("coded_picture_number",   frame->coded_picture_number);
01320         print_int("display_picture_number", frame->display_picture_number);
01321         print_int("interlaced_frame",       frame->interlaced_frame);
01322         print_int("top_field_first",        frame->top_field_first);
01323         print_int("repeat_pict",            frame->repeat_pict);
01324         print_int("reference",              frame->reference);
01325         break;
01326 
01327     case AVMEDIA_TYPE_AUDIO:
01328         s = av_get_sample_fmt_name(frame->format);
01329         if (s) print_str    ("sample_fmt", s);
01330         else   print_str_opt("sample_fmt", "unknown");
01331         print_int("nb_samples",         frame->nb_samples);
01332         break;
01333     }
01334 
01335     print_section_footer("frame");
01336 
01337     av_free(pbuf.s);
01338     fflush(stdout);
01339 }
01340 
01341 static av_always_inline int get_decoded_frame(AVFormatContext *fmt_ctx,
01342                                               AVFrame *frame, int *got_frame,
01343                                               AVPacket *pkt)
01344 {
01345     AVCodecContext *dec_ctx = fmt_ctx->streams[pkt->stream_index]->codec;
01346     int ret = 0;
01347 
01348     *got_frame = 0;
01349     switch (dec_ctx->codec_type) {
01350     case AVMEDIA_TYPE_VIDEO:
01351         ret = avcodec_decode_video2(dec_ctx, frame, got_frame, pkt);
01352         break;
01353 
01354     case AVMEDIA_TYPE_AUDIO:
01355         ret = avcodec_decode_audio4(dec_ctx, frame, got_frame, pkt);
01356         break;
01357     }
01358 
01359     return ret;
01360 }
01361 
01362 static void show_packets(WriterContext *w, AVFormatContext *fmt_ctx)
01363 {
01364     AVPacket pkt, pkt1;
01365     AVFrame frame;
01366     int i = 0, ret, got_frame;
01367 
01368     av_init_packet(&pkt);
01369 
01370     while (!av_read_frame(fmt_ctx, &pkt)) {
01371         if (do_show_packets)
01372             show_packet(w, fmt_ctx, &pkt, i++);
01373         if (do_show_frames) {
01374             pkt1 = pkt;
01375             while (1) {
01376                 avcodec_get_frame_defaults(&frame);
01377                 ret = get_decoded_frame(fmt_ctx, &frame, &got_frame, &pkt1);
01378                 if (ret < 0 || !got_frame)
01379                     break;
01380                 show_frame(w, &frame, fmt_ctx->streams[pkt.stream_index]);
01381                 pkt1.data += ret;
01382                 pkt1.size -= ret;
01383             }
01384         }
01385         av_free_packet(&pkt);
01386     }
01387     av_init_packet(&pkt);
01388     pkt.data = NULL;
01389     pkt.size = 0;
01390     //Flush remaining frames that are cached in the decoder
01391     for (i = 0; i < fmt_ctx->nb_streams; i++) {
01392         pkt.stream_index = i;
01393         while (get_decoded_frame(fmt_ctx, &frame, &got_frame, &pkt) >= 0 && got_frame)
01394             show_frame(w, &frame, fmt_ctx->streams[pkt.stream_index]);
01395     }
01396 }
01397 
01398 static void show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx)
01399 {
01400     AVStream *stream = fmt_ctx->streams[stream_idx];
01401     AVCodecContext *dec_ctx;
01402     AVCodec *dec;
01403     char val_str[128];
01404     const char *s;
01405     AVRational display_aspect_ratio;
01406     struct print_buf pbuf = {.s = NULL};
01407 
01408     print_section_header("stream");
01409 
01410     print_int("index", stream->index);
01411 
01412     if ((dec_ctx = stream->codec)) {
01413         if ((dec = dec_ctx->codec)) {
01414             print_str("codec_name",      dec->name);
01415             print_str("codec_long_name", dec->long_name);
01416         } else {
01417             print_str_opt("codec_name",      "unknown");
01418             print_str_opt("codec_long_name", "unknown");
01419         }
01420 
01421         s = av_get_media_type_string(dec_ctx->codec_type);
01422         if (s) print_str    ("codec_type", s);
01423         else   print_str_opt("codec_type", "unknown");
01424         print_fmt("codec_time_base", "%d/%d", dec_ctx->time_base.num, dec_ctx->time_base.den);
01425 
01426         /* print AVI/FourCC tag */
01427         av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
01428         print_str("codec_tag_string",    val_str);
01429         print_fmt("codec_tag", "0x%04x", dec_ctx->codec_tag);
01430 
01431         switch (dec_ctx->codec_type) {
01432         case AVMEDIA_TYPE_VIDEO:
01433             print_int("width",        dec_ctx->width);
01434             print_int("height",       dec_ctx->height);
01435             print_int("has_b_frames", dec_ctx->has_b_frames);
01436             if (dec_ctx->sample_aspect_ratio.num) {
01437                 print_fmt("sample_aspect_ratio", "%d:%d",
01438                           dec_ctx->sample_aspect_ratio.num,
01439                           dec_ctx->sample_aspect_ratio.den);
01440                 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
01441                           dec_ctx->width  * dec_ctx->sample_aspect_ratio.num,
01442                           dec_ctx->height * dec_ctx->sample_aspect_ratio.den,
01443                           1024*1024);
01444                 print_fmt("display_aspect_ratio", "%d:%d",
01445                           display_aspect_ratio.num,
01446                           display_aspect_ratio.den);
01447             } else {
01448                 print_str_opt("sample_aspect_ratio", "N/A");
01449                 print_str_opt("display_aspect_ratio", "N/A");
01450             }
01451             s = av_get_pix_fmt_name(dec_ctx->pix_fmt);
01452             if (s) print_str    ("pix_fmt", s);
01453             else   print_str_opt("pix_fmt", "unknown");
01454             print_int("level",   dec_ctx->level);
01455             if (dec_ctx->timecode_frame_start >= 0) {
01456                 uint32_t tc = dec_ctx->timecode_frame_start;
01457                 print_fmt("timecode", "%02d:%02d:%02d%c%02d",
01458                           tc>>19 & 0x1f,              // hours
01459                           tc>>13 & 0x3f,              // minutes
01460                           tc>>6  & 0x3f,              // seconds
01461                           tc     & 1<<24 ? ';' : ':', // drop
01462                           tc     & 0x3f);             // frames
01463             } else {
01464                 print_str_opt("timecode", "N/A");
01465             }
01466             break;
01467 
01468         case AVMEDIA_TYPE_AUDIO:
01469             s = av_get_sample_fmt_name(dec_ctx->sample_fmt);
01470             if (s) print_str    ("sample_fmt", s);
01471             else   print_str_opt("sample_fmt", "unknown");
01472             print_val("sample_rate",     dec_ctx->sample_rate, unit_hertz_str);
01473             print_int("channels",        dec_ctx->channels);
01474             print_int("bits_per_sample", av_get_bits_per_sample(dec_ctx->codec_id));
01475             break;
01476         }
01477     } else {
01478         print_str_opt("codec_type", "unknown");
01479     }
01480     if (dec_ctx->codec && dec_ctx->codec->priv_class && show_private_data) {
01481         const AVOption *opt = NULL;
01482         while (opt = av_opt_next(dec_ctx->priv_data,opt)) {
01483             uint8_t *str;
01484             if (opt->flags) continue;
01485             if (av_opt_get(dec_ctx->priv_data, opt->name, 0, &str) >= 0) {
01486                 print_str(opt->name, str);
01487                 av_free(str);
01488             }
01489         }
01490     }
01491 
01492     if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) print_fmt    ("id", "0x%x", stream->id);
01493     else                                          print_str_opt("id", "N/A");
01494     print_fmt("r_frame_rate",   "%d/%d", stream->r_frame_rate.num,   stream->r_frame_rate.den);
01495     print_fmt("avg_frame_rate", "%d/%d", stream->avg_frame_rate.num, stream->avg_frame_rate.den);
01496     print_fmt("time_base",      "%d/%d", stream->time_base.num,      stream->time_base.den);
01497     print_time("start_time",    stream->start_time, &stream->time_base);
01498     print_time("duration",      stream->duration,   &stream->time_base);
01499     if (stream->nb_frames) print_fmt    ("nb_frames", "%"PRId64, stream->nb_frames);
01500     else                   print_str_opt("nb_frames", "N/A");
01501     show_tags(stream->metadata);
01502 
01503     print_section_footer("stream");
01504     av_free(pbuf.s);
01505     fflush(stdout);
01506 }
01507 
01508 static void show_streams(WriterContext *w, AVFormatContext *fmt_ctx)
01509 {
01510     int i;
01511     for (i = 0; i < fmt_ctx->nb_streams; i++)
01512         show_stream(w, fmt_ctx, i);
01513 }
01514 
01515 static void show_format(WriterContext *w, AVFormatContext *fmt_ctx)
01516 {
01517     char val_str[128];
01518     int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
01519 
01520     print_section_header("format");
01521     print_str("filename",         fmt_ctx->filename);
01522     print_int("nb_streams",       fmt_ctx->nb_streams);
01523     print_str("format_name",      fmt_ctx->iformat->name);
01524     print_str("format_long_name", fmt_ctx->iformat->long_name);
01525     print_time("start_time",      fmt_ctx->start_time, &AV_TIME_BASE_Q);
01526     print_time("duration",        fmt_ctx->duration,   &AV_TIME_BASE_Q);
01527     if (size >= 0) print_val    ("size", size, unit_byte_str);
01528     else           print_str_opt("size", "N/A");
01529     if (fmt_ctx->bit_rate > 0) print_val    ("bit_rate", fmt_ctx->bit_rate, unit_bit_per_second_str);
01530     else                       print_str_opt("bit_rate", "N/A");
01531     show_tags(fmt_ctx->metadata);
01532     print_section_footer("format");
01533     fflush(stdout);
01534 }
01535 
01536 static void show_error(WriterContext *w, int err)
01537 {
01538     char errbuf[128];
01539     const char *errbuf_ptr = errbuf;
01540 
01541     if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
01542         errbuf_ptr = strerror(AVUNERROR(err));
01543 
01544     writer_print_chapter_header(w, "error");
01545     print_section_header("error");
01546     print_int("code", err);
01547     print_str("string", errbuf_ptr);
01548     print_section_footer("error");
01549     writer_print_chapter_footer(w, "error");
01550 }
01551 
01552 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
01553 {
01554     int err, i;
01555     AVFormatContext *fmt_ctx = NULL;
01556     AVDictionaryEntry *t;
01557 
01558     if ((err = avformat_open_input(&fmt_ctx, filename,
01559                                    iformat, &format_opts)) < 0) {
01560         print_error(filename, err);
01561         return err;
01562     }
01563     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
01564         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
01565         return AVERROR_OPTION_NOT_FOUND;
01566     }
01567 
01568 
01569     /* fill the streams in the format context */
01570     if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
01571         print_error(filename, err);
01572         return err;
01573     }
01574 
01575     av_dump_format(fmt_ctx, 0, filename, 0);
01576 
01577     /* bind a decoder to each input stream */
01578     for (i = 0; i < fmt_ctx->nb_streams; i++) {
01579         AVStream *stream = fmt_ctx->streams[i];
01580         AVCodec *codec;
01581 
01582         if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
01583             av_log(NULL, AV_LOG_ERROR,
01584                     "Unsupported codec with id %d for input stream %d\n",
01585                     stream->codec->codec_id, stream->index);
01586         } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
01587             av_log(NULL, AV_LOG_ERROR, "Error while opening codec for input stream %d\n",
01588                    stream->index);
01589         }
01590     }
01591 
01592     *fmt_ctx_ptr = fmt_ctx;
01593     return 0;
01594 }
01595 
01596 #define PRINT_CHAPTER(name) do {                                        \
01597     if (do_show_ ## name) {                                             \
01598         writer_print_chapter_header(wctx, #name);                       \
01599         show_ ## name (wctx, fmt_ctx);                                  \
01600         writer_print_chapter_footer(wctx, #name);                       \
01601     }                                                                   \
01602 } while (0)
01603 
01604 static int probe_file(WriterContext *wctx, const char *filename)
01605 {
01606     AVFormatContext *fmt_ctx;
01607     int ret, i;
01608 
01609     ret = open_input_file(&fmt_ctx, filename);
01610     if (ret >= 0) {
01611         if (do_show_packets || do_show_frames) {
01612             const char *chapter;
01613             if (do_show_frames && do_show_packets &&
01614                 wctx->writer->flags & WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER)
01615                 chapter = "packets_and_frames";
01616             else if (do_show_packets && !do_show_frames)
01617                 chapter = "packets";
01618             else // (!do_show_packets && do_show_frames)
01619                 chapter = "frames";
01620             writer_print_chapter_header(wctx, chapter);
01621             show_packets(wctx, fmt_ctx);
01622             writer_print_chapter_footer(wctx, chapter);
01623         }
01624         PRINT_CHAPTER(streams);
01625         PRINT_CHAPTER(format);
01626         for (i = 0; i < fmt_ctx->nb_streams; i++)
01627             if (fmt_ctx->streams[i]->codec->codec_id != CODEC_ID_NONE)
01628                 avcodec_close(fmt_ctx->streams[i]->codec);
01629         avformat_close_input(&fmt_ctx);
01630     }
01631 
01632     return ret;
01633 }
01634 
01635 static void show_usage(void)
01636 {
01637     av_log(NULL, AV_LOG_INFO, "Simple multimedia streams analyzer\n");
01638     av_log(NULL, AV_LOG_INFO, "usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
01639     av_log(NULL, AV_LOG_INFO, "\n");
01640 }
01641 
01642 static void ffprobe_show_program_version(WriterContext *w)
01643 {
01644     struct print_buf pbuf = {.s = NULL};
01645 
01646     writer_print_chapter_header(w, "program_version");
01647     print_section_header("program_version");
01648     print_str("version", FFMPEG_VERSION);
01649     print_fmt("copyright", "Copyright (c) %d-%d the FFmpeg developers",
01650               program_birth_year, this_year);
01651     print_str("build_date", __DATE__);
01652     print_str("build_time", __TIME__);
01653     print_str("compiler_type", CC_TYPE);
01654     print_str("compiler_version", CC_VERSION);
01655     print_str("configuration", FFMPEG_CONFIGURATION);
01656     print_section_footer("program_version");
01657     writer_print_chapter_footer(w, "program_version");
01658 
01659     av_free(pbuf.s);
01660 }
01661 
01662 #define SHOW_LIB_VERSION(libname, LIBNAME)                              \
01663     do {                                                                \
01664         if (CONFIG_##LIBNAME) {                                         \
01665             unsigned int version = libname##_version();                 \
01666             print_section_header("library_version");                    \
01667             print_str("name",    "lib" #libname);                       \
01668             print_int("major",   LIB##LIBNAME##_VERSION_MAJOR);         \
01669             print_int("minor",   LIB##LIBNAME##_VERSION_MINOR);         \
01670             print_int("micro",   LIB##LIBNAME##_VERSION_MICRO);         \
01671             print_int("version", version);                              \
01672             print_section_footer("library_version");                    \
01673         }                                                               \
01674     } while (0)
01675 
01676 static void ffprobe_show_library_versions(WriterContext *w)
01677 {
01678     writer_print_chapter_header(w, "library_versions");
01679     SHOW_LIB_VERSION(avutil,     AVUTIL);
01680     SHOW_LIB_VERSION(avcodec,    AVCODEC);
01681     SHOW_LIB_VERSION(avformat,   AVFORMAT);
01682     SHOW_LIB_VERSION(avdevice,   AVDEVICE);
01683     SHOW_LIB_VERSION(avfilter,   AVFILTER);
01684     SHOW_LIB_VERSION(swscale,    SWSCALE);
01685     SHOW_LIB_VERSION(swresample, SWRESAMPLE);
01686     SHOW_LIB_VERSION(postproc,   POSTPROC);
01687     writer_print_chapter_footer(w, "library_versions");
01688 }
01689 
01690 static int opt_format(const char *opt, const char *arg)
01691 {
01692     iformat = av_find_input_format(arg);
01693     if (!iformat) {
01694         av_log(NULL, AV_LOG_ERROR, "Unknown input format: %s\n", arg);
01695         return AVERROR(EINVAL);
01696     }
01697     return 0;
01698 }
01699 
01700 static void opt_input_file(void *optctx, const char *arg)
01701 {
01702     if (input_filename) {
01703         av_log(NULL, AV_LOG_ERROR,
01704                 "Argument '%s' provided as input filename, but '%s' was already specified.\n",
01705                 arg, input_filename);
01706         exit(1);
01707     }
01708     if (!strcmp(arg, "-"))
01709         arg = "pipe:";
01710     input_filename = arg;
01711 }
01712 
01713 static int opt_help(const char *opt, const char *arg)
01714 {
01715     av_log_set_callback(log_callback_help);
01716     show_usage();
01717     show_help_options(options, "Main options:\n", 0, 0);
01718     printf("\n");
01719 
01720     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
01721 
01722     return 0;
01723 }
01724 
01725 static int opt_pretty(const char *opt, const char *arg)
01726 {
01727     show_value_unit              = 1;
01728     use_value_prefix             = 1;
01729     use_byte_value_binary_prefix = 1;
01730     use_value_sexagesimal_format = 1;
01731     return 0;
01732 }
01733 
01734 static int opt_show_versions(const char *opt, const char *arg)
01735 {
01736     do_show_program_version  = 1;
01737     do_show_library_versions = 1;
01738     return 0;
01739 }
01740 
01741 static const OptionDef options[] = {
01742 #include "cmdutils_common_opts.h"
01743     { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
01744     { "unit", OPT_BOOL, {(void*)&show_value_unit}, "show unit of the displayed values" },
01745     { "prefix", OPT_BOOL, {(void*)&use_value_prefix}, "use SI prefixes for the displayed values" },
01746     { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
01747       "use binary prefixes for byte units" },
01748     { "sexagesimal", OPT_BOOL,  {(void*)&use_value_sexagesimal_format},
01749       "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
01750     { "pretty", 0, {(void*)&opt_pretty},
01751       "prettify the format of displayed values, make it more human readable" },
01752     { "print_format", OPT_STRING | HAS_ARG, {(void*)&print_format},
01753       "set the output printing format (available formats are: default, compact, csv, json, xml)", "format" },
01754     { "show_error",   OPT_BOOL, {(void*)&do_show_error} ,  "show probing error" },
01755     { "show_format",  OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
01756     { "show_frames",  OPT_BOOL, {(void*)&do_show_frames} , "show frames info" },
01757     { "show_packets", OPT_BOOL, {(void*)&do_show_packets}, "show packets info" },
01758     { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
01759     { "show_program_version",  OPT_BOOL, {(void*)&do_show_program_version},  "show ffprobe version" },
01760     { "show_library_versions", OPT_BOOL, {(void*)&do_show_library_versions}, "show library versions" },
01761     { "show_versions",         0, {(void*)&opt_show_versions}, "show program and library versions" },
01762     { "show_private_data", OPT_BOOL, {(void*)&show_private_data}, "show private data" },
01763     { "private",           OPT_BOOL, {(void*)&show_private_data}, "same as show_private_data" },
01764     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
01765     { "i", HAS_ARG, {(void *)opt_input_file}, "read specified file", "input_file"},
01766     { NULL, },
01767 };
01768 
01769 int main(int argc, char **argv)
01770 {
01771     const Writer *w;
01772     WriterContext *wctx;
01773     char *buf;
01774     char *w_name = NULL, *w_args = NULL;
01775     int ret;
01776 
01777     av_log_set_flags(AV_LOG_SKIP_REPEATED);
01778     parse_loglevel(argc, argv, options);
01779     av_register_all();
01780     avformat_network_init();
01781     init_opts();
01782 #if CONFIG_AVDEVICE
01783     avdevice_register_all();
01784 #endif
01785 
01786     show_banner(argc, argv, options);
01787     parse_options(NULL, argc, argv, options, opt_input_file);
01788 
01789     writer_register_all();
01790 
01791     if (!print_format)
01792         print_format = av_strdup("default");
01793     if (!print_format) {
01794         ret = AVERROR(ENOMEM);
01795         goto end;
01796     }
01797     w_name = av_strtok(print_format, "=", &buf);
01798     w_args = buf;
01799 
01800     w = writer_get_by_name(w_name);
01801     if (!w) {
01802         av_log(NULL, AV_LOG_ERROR, "Unknown output format with name '%s'\n", w_name);
01803         ret = AVERROR(EINVAL);
01804         goto end;
01805     }
01806 
01807     if ((ret = writer_open(&wctx, w, w_args, NULL)) >= 0) {
01808         writer_print_header(wctx);
01809 
01810         if (do_show_program_version)
01811             ffprobe_show_program_version(wctx);
01812         if (do_show_library_versions)
01813             ffprobe_show_library_versions(wctx);
01814 
01815         if (!input_filename &&
01816             ((do_show_format || do_show_streams || do_show_packets || do_show_error) ||
01817              (!do_show_program_version && !do_show_library_versions))) {
01818             show_usage();
01819             av_log(NULL, AV_LOG_ERROR, "You have to specify one input file.\n");
01820             av_log(NULL, AV_LOG_ERROR, "Use -h to get full help or, even better, run 'man %s'.\n", program_name);
01821             ret = AVERROR(EINVAL);
01822         } else if (input_filename) {
01823             ret = probe_file(wctx, input_filename);
01824             if (ret < 0 && do_show_error)
01825                 show_error(wctx, ret);
01826         }
01827 
01828         writer_print_footer(wctx);
01829         writer_close(&wctx);
01830     }
01831 
01832 end:
01833     av_freep(&print_format);
01834     avformat_network_deinit();
01835 
01836     return ret;
01837 }
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