| /* |
| * ffprobe : Simple Media Prober based on the FFmpeg libraries |
| * Copyright (c) 2007-2010 Stefano Sabatini |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "config.h" |
| |
| #include "libavformat/avformat.h" |
| #include "libavcodec/avcodec.h" |
| #include "libavutil/avstring.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/pixdesc.h" |
| #include "libavutil/dict.h" |
| #include "libavdevice/avdevice.h" |
| #include "cmdutils.h" |
| |
| const char program_name[] = "ffprobe"; |
| const int program_birth_year = 2007; |
| |
| static int do_show_format = 0; |
| static int do_show_packets = 0; |
| static int do_show_streams = 0; |
| |
| static int show_value_unit = 0; |
| static int use_value_prefix = 0; |
| static int use_byte_value_binary_prefix = 0; |
| static int use_value_sexagesimal_format = 0; |
| |
| static char *print_format; |
| |
| static const OptionDef options[]; |
| |
| /* FFprobe context */ |
| static const char *input_filename; |
| static AVInputFormat *iformat = NULL; |
| |
| static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" }; |
| static const char *decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" }; |
| |
| static const char *unit_second_str = "s" ; |
| static const char *unit_hertz_str = "Hz" ; |
| static const char *unit_byte_str = "byte" ; |
| static const char *unit_bit_per_second_str = "bit/s"; |
| |
| void av_noreturn exit_program(int ret) |
| { |
| exit(ret); |
| } |
| |
| struct unit_value { |
| union { double d; int i; } val; |
| const char *unit; |
| }; |
| |
| static char *value_string(char *buf, int buf_size, struct unit_value uv) |
| { |
| double vald; |
| int show_float = 0; |
| |
| if (uv.unit == unit_second_str) { |
| vald = uv.val.d; |
| show_float = 1; |
| } else { |
| vald = uv.val.i; |
| } |
| |
| if (uv.unit == unit_second_str && use_value_sexagesimal_format) { |
| double secs; |
| int hours, mins; |
| secs = vald; |
| mins = (int)secs / 60; |
| secs = secs - mins * 60; |
| hours = mins / 60; |
| mins %= 60; |
| snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs); |
| } else if (use_value_prefix) { |
| const char *prefix_string; |
| int index, l; |
| |
| if (uv.unit == unit_byte_str && use_byte_value_binary_prefix) { |
| index = (int) (log(vald)/log(2)) / 10; |
| index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) -1); |
| vald /= pow(2, index*10); |
| prefix_string = binary_unit_prefixes[index]; |
| } else { |
| index = (int) (log10(vald)) / 3; |
| index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) -1); |
| vald /= pow(10, index*3); |
| prefix_string = decimal_unit_prefixes[index]; |
| } |
| |
| if (show_float || vald != (int)vald) l = snprintf(buf, buf_size, "%.3f", vald); |
| else l = snprintf(buf, buf_size, "%d", (int)vald); |
| snprintf(buf+l, buf_size-l, "%s%s%s", prefix_string || show_value_unit ? " " : "", |
| prefix_string, show_value_unit ? uv.unit : ""); |
| } else { |
| int l; |
| |
| if (show_float) l = snprintf(buf, buf_size, "%.3f", vald); |
| else l = snprintf(buf, buf_size, "%d", (int)vald); |
| snprintf(buf+l, buf_size-l, "%s%s", show_value_unit ? " " : "", |
| show_value_unit ? uv.unit : ""); |
| } |
| |
| return buf; |
| } |
| |
| /* WRITERS API */ |
| |
| typedef struct WriterContext WriterContext; |
| |
| #define WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS 1 |
| |
| typedef struct Writer { |
| int priv_size; ///< private size for the writer context |
| const char *name; |
| |
| int (*init) (WriterContext *wctx, const char *args, void *opaque); |
| void (*uninit)(WriterContext *wctx); |
| |
| void (*print_header)(WriterContext *ctx); |
| void (*print_footer)(WriterContext *ctx); |
| |
| void (*print_chapter_header)(WriterContext *wctx, const char *); |
| void (*print_chapter_footer)(WriterContext *wctx, const char *); |
| void (*print_section_header)(WriterContext *wctx, const char *); |
| void (*print_section_footer)(WriterContext *wctx, const char *); |
| void (*print_integer) (WriterContext *wctx, const char *, long long int); |
| void (*print_string) (WriterContext *wctx, const char *, const char *); |
| void (*show_tags) (WriterContext *wctx, AVDictionary *dict); |
| int flags; ///< a combination or WRITER_FLAG_* |
| } Writer; |
| |
| struct WriterContext { |
| const AVClass *class; ///< class of the writer |
| const Writer *writer; ///< the Writer of which this is an instance |
| char *name; ///< name of this writer instance |
| void *priv; ///< private data for use by the filter |
| unsigned int nb_item; ///< number of the item printed in the given section, starting at 0 |
| unsigned int nb_section; ///< number of the section printed in the given section sequence, starting at 0 |
| unsigned int nb_chapter; ///< number of the chapter, starting at 0 |
| }; |
| |
| static const char *writer_get_name(void *p) |
| { |
| WriterContext *wctx = p; |
| return wctx->writer->name; |
| } |
| |
| static const AVClass writer_class = { |
| "Writer", |
| writer_get_name, |
| NULL, |
| LIBAVUTIL_VERSION_INT, |
| }; |
| |
| static void writer_close(WriterContext **wctx) |
| { |
| if (*wctx && (*wctx)->writer->uninit) |
| (*wctx)->writer->uninit(*wctx); |
| |
| av_freep(&((*wctx)->priv)); |
| av_freep(wctx); |
| } |
| |
| static int writer_open(WriterContext **wctx, const Writer *writer, |
| const char *args, void *opaque) |
| { |
| int ret = 0; |
| |
| if (!(*wctx = av_malloc(sizeof(WriterContext)))) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| if (!((*wctx)->priv = av_mallocz(writer->priv_size))) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| (*wctx)->class = &writer_class; |
| (*wctx)->writer = writer; |
| if ((*wctx)->writer->init) |
| ret = (*wctx)->writer->init(*wctx, args, opaque); |
| if (ret < 0) |
| goto fail; |
| |
| return 0; |
| |
| fail: |
| writer_close(wctx); |
| return ret; |
| } |
| |
| static inline void writer_print_header(WriterContext *wctx) |
| { |
| if (wctx->writer->print_header) |
| wctx->writer->print_header(wctx); |
| wctx->nb_chapter = 0; |
| } |
| |
| static inline void writer_print_footer(WriterContext *wctx) |
| { |
| if (wctx->writer->print_footer) |
| wctx->writer->print_footer(wctx); |
| } |
| |
| static inline void writer_print_chapter_header(WriterContext *wctx, |
| const char *header) |
| { |
| if (wctx->writer->print_chapter_header) |
| wctx->writer->print_chapter_header(wctx, header); |
| wctx->nb_section = 0; |
| } |
| |
| static inline void writer_print_chapter_footer(WriterContext *wctx, |
| const char *footer) |
| { |
| if (wctx->writer->print_chapter_footer) |
| wctx->writer->print_chapter_footer(wctx, footer); |
| wctx->nb_chapter++; |
| } |
| |
| static inline void writer_print_section_header(WriterContext *wctx, |
| const char *header) |
| { |
| if (wctx->writer->print_section_header) |
| wctx->writer->print_section_header(wctx, header); |
| wctx->nb_item = 0; |
| } |
| |
| static inline void writer_print_section_footer(WriterContext *wctx, |
| const char *footer) |
| { |
| if (wctx->writer->print_section_footer) |
| wctx->writer->print_section_footer(wctx, footer); |
| wctx->nb_section++; |
| } |
| |
| static inline void writer_print_integer(WriterContext *wctx, |
| const char *key, long long int val) |
| { |
| wctx->writer->print_integer(wctx, key, val); |
| wctx->nb_item++; |
| } |
| |
| static inline void writer_print_string(WriterContext *wctx, |
| const char *key, const char *val, int opt) |
| { |
| if (opt && !(wctx->writer->flags & WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS)) |
| return; |
| wctx->writer->print_string(wctx, key, val); |
| wctx->nb_item++; |
| } |
| |
| static void writer_print_time(WriterContext *wctx, const char *key, |
| int64_t ts, const AVRational *time_base) |
| { |
| char buf[128]; |
| |
| if (ts == AV_NOPTS_VALUE) { |
| writer_print_string(wctx, key, "N/A", 1); |
| } else { |
| double d = ts * av_q2d(*time_base); |
| value_string(buf, sizeof(buf), (struct unit_value){.val.d=d, .unit=unit_second_str}); |
| writer_print_string(wctx, key, buf, 0); |
| } |
| } |
| |
| static void writer_print_ts(WriterContext *wctx, const char *key, int64_t ts) |
| { |
| if (ts == AV_NOPTS_VALUE) { |
| writer_print_string(wctx, key, "N/A", 1); |
| } else { |
| writer_print_integer(wctx, key, ts); |
| } |
| } |
| |
| static inline void writer_show_tags(WriterContext *wctx, AVDictionary *dict) |
| { |
| wctx->writer->show_tags(wctx, dict); |
| } |
| |
| #define MAX_REGISTERED_WRITERS_NB 64 |
| |
| static const Writer *registered_writers[MAX_REGISTERED_WRITERS_NB + 1]; |
| |
| static int writer_register(const Writer *writer) |
| { |
| static int next_registered_writer_idx = 0; |
| |
| if (next_registered_writer_idx == MAX_REGISTERED_WRITERS_NB) |
| return AVERROR(ENOMEM); |
| |
| registered_writers[next_registered_writer_idx++] = writer; |
| return 0; |
| } |
| |
| static const Writer *writer_get_by_name(const char *name) |
| { |
| int i; |
| |
| for (i = 0; registered_writers[i]; i++) |
| if (!strcmp(registered_writers[i]->name, name)) |
| return registered_writers[i]; |
| |
| return NULL; |
| } |
| |
| /* Print helpers */ |
| |
| struct print_buf { |
| char *s; |
| int len; |
| }; |
| |
| static char *fast_asprintf(struct print_buf *pbuf, const char *fmt, ...) |
| { |
| va_list va; |
| int len; |
| |
| va_start(va, fmt); |
| len = vsnprintf(NULL, 0, fmt, va); |
| va_end(va); |
| if (len < 0) |
| goto fail; |
| |
| if (pbuf->len < len) { |
| char *p = av_realloc(pbuf->s, len + 1); |
| if (!p) |
| goto fail; |
| pbuf->s = p; |
| pbuf->len = len; |
| } |
| |
| va_start(va, fmt); |
| len = vsnprintf(pbuf->s, len + 1, fmt, va); |
| va_end(va); |
| if (len < 0) |
| goto fail; |
| return pbuf->s; |
| |
| fail: |
| av_freep(&pbuf->s); |
| pbuf->len = 0; |
| return NULL; |
| } |
| |
| #define ESCAPE_INIT_BUF_SIZE 256 |
| |
| #define ESCAPE_CHECK_SIZE(src, size, max_size) \ |
| if (size > max_size) { \ |
| char buf[64]; \ |
| snprintf(buf, sizeof(buf), "%s", src); \ |
| av_log(log_ctx, AV_LOG_WARNING, \ |
| "String '%s...' with is too big\n", buf); \ |
| return "FFPROBE_TOO_BIG_STRING"; \ |
| } |
| |
| #define ESCAPE_REALLOC_BUF(dst_size_p, dst_p, src, size) \ |
| if (*dst_size_p < size) { \ |
| char *q = av_realloc(*dst_p, size); \ |
| if (!q) { \ |
| char buf[64]; \ |
| snprintf(buf, sizeof(buf), "%s", src); \ |
| av_log(log_ctx, AV_LOG_WARNING, \ |
| "String '%s...' could not be escaped\n", buf); \ |
| return "FFPROBE_THIS_STRING_COULD_NOT_BE_ESCAPED"; \ |
| } \ |
| *dst_size_p = size; \ |
| *dst = q; \ |
| } |
| |
| /* WRITERS */ |
| |
| /* Default output */ |
| |
| static void default_print_footer(WriterContext *wctx) |
| { |
| printf("\n"); |
| } |
| |
| static void default_print_chapter_header(WriterContext *wctx, const char *chapter) |
| { |
| if (wctx->nb_chapter) |
| printf("\n"); |
| } |
| |
| /* lame uppercasing routine, assumes the string is lower case ASCII */ |
| static inline char *upcase_string(char *dst, size_t dst_size, const char *src) |
| { |
| int i; |
| for (i = 0; src[i] && i < dst_size-1; i++) |
| dst[i] = src[i]-32; |
| dst[i] = 0; |
| return dst; |
| } |
| |
| static void default_print_section_header(WriterContext *wctx, const char *section) |
| { |
| char buf[32]; |
| |
| if (wctx->nb_section) |
| printf("\n"); |
| printf("[%s]\n", upcase_string(buf, sizeof(buf), section)); |
| } |
| |
| static void default_print_section_footer(WriterContext *wctx, const char *section) |
| { |
| char buf[32]; |
| |
| printf("[/%s]", upcase_string(buf, sizeof(buf), section)); |
| } |
| |
| static void default_print_str(WriterContext *wctx, const char *key, const char *value) |
| { |
| printf("%s=%s\n", key, value); |
| } |
| |
| static void default_print_int(WriterContext *wctx, const char *key, long long int value) |
| { |
| printf("%s=%lld\n", key, value); |
| } |
| |
| static void default_show_tags(WriterContext *wctx, AVDictionary *dict) |
| { |
| AVDictionaryEntry *tag = NULL; |
| while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) { |
| printf("TAG:"); |
| writer_print_string(wctx, tag->key, tag->value, 0); |
| } |
| } |
| |
| static const Writer default_writer = { |
| .name = "default", |
| .print_footer = default_print_footer, |
| .print_chapter_header = default_print_chapter_header, |
| .print_section_header = default_print_section_header, |
| .print_section_footer = default_print_section_footer, |
| .print_integer = default_print_int, |
| .print_string = default_print_str, |
| .show_tags = default_show_tags, |
| .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS, |
| }; |
| |
| /* Compact output */ |
| |
| /** |
| * Escape \n, \r, \\ and sep characters contained in s, and print the |
| * resulting string. |
| */ |
| static const char *c_escape_str(char **dst, size_t *dst_size, |
| const char *src, const char sep, void *log_ctx) |
| { |
| const char *p; |
| char *q; |
| size_t size = 1; |
| |
| /* precompute size */ |
| for (p = src; *p; p++, size++) { |
| ESCAPE_CHECK_SIZE(src, size, SIZE_MAX-2); |
| if (*p == '\n' || *p == '\r' || *p == '\\') |
| size++; |
| } |
| |
| ESCAPE_REALLOC_BUF(dst_size, dst, src, size); |
| |
| q = *dst; |
| for (p = src; *p; p++) { |
| switch (*src) { |
| case '\n': *q++ = '\\'; *q++ = 'n'; break; |
| case '\r': *q++ = '\\'; *q++ = 'r'; break; |
| case '\\': *q++ = '\\'; *q++ = '\\'; break; |
| default: |
| if (*p == sep) |
| *q++ = '\\'; |
| *q++ = *p; |
| } |
| } |
| *q = 0; |
| return *dst; |
| } |
| |
| /** |
| * Quote fields containing special characters, check RFC4180. |
| */ |
| static const char *csv_escape_str(char **dst, size_t *dst_size, |
| const char *src, const char sep, void *log_ctx) |
| { |
| const char *p; |
| char *q; |
| size_t size = 1; |
| int quote = 0; |
| |
| /* precompute size */ |
| for (p = src; *p; p++, size++) { |
| ESCAPE_CHECK_SIZE(src, size, SIZE_MAX-4); |
| if (*p == '"' || *p == sep || *p == '\n' || *p == '\r') |
| if (!quote) { |
| quote = 1; |
| size += 2; |
| } |
| if (*p == '"') |
| size++; |
| } |
| |
| ESCAPE_REALLOC_BUF(dst_size, dst, src, size); |
| |
| q = *dst; |
| p = src; |
| if (quote) |
| *q++ = '\"'; |
| while (*p) { |
| if (*p == '"') |
| *q++ = '\"'; |
| *q++ = *p++; |
| } |
| if (quote) |
| *q++ = '\"'; |
| *q = 0; |
| |
| return *dst; |
| } |
| |
| static const char *none_escape_str(char **dst, size_t *dst_size, |
| const char *src, const char sep, void *log_ctx) |
| { |
| return src; |
| } |
| |
| typedef struct CompactContext { |
| const AVClass *class; |
| char *item_sep_str; |
| char item_sep; |
| int nokey; |
| char *buf; |
| size_t buf_size; |
| char *escape_mode_str; |
| const char * (*escape_str)(char **dst, size_t *dst_size, |
| const char *src, const char sep, void *log_ctx); |
| } CompactContext; |
| |
| #define OFFSET(x) offsetof(CompactContext, x) |
| |
| static const AVOption compact_options[]= { |
| {"item_sep", "set item separator", OFFSET(item_sep_str), AV_OPT_TYPE_STRING, {.str="|"}, CHAR_MIN, CHAR_MAX }, |
| {"s", "set item separator", OFFSET(item_sep_str), AV_OPT_TYPE_STRING, {.str="|"}, CHAR_MIN, CHAR_MAX }, |
| {"nokey", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 }, |
| {"nk", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 }, |
| {"escape", "set escape mode", OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"}, CHAR_MIN, CHAR_MAX }, |
| {"e", "set escape mode", OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"}, CHAR_MIN, CHAR_MAX }, |
| {NULL}, |
| }; |
| |
| static const char *compact_get_name(void *ctx) |
| { |
| return "compact"; |
| } |
| |
| static const AVClass compact_class = { |
| "CompactContext", |
| compact_get_name, |
| compact_options |
| }; |
| |
| static av_cold int compact_init(WriterContext *wctx, const char *args, void *opaque) |
| { |
| CompactContext *compact = wctx->priv; |
| int err; |
| |
| compact->class = &compact_class; |
| av_opt_set_defaults(compact); |
| |
| if (args && |
| (err = (av_set_options_string(compact, args, "=", ":"))) < 0) { |
| av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args); |
| return err; |
| } |
| if (strlen(compact->item_sep_str) != 1) { |
| av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n", |
| compact->item_sep_str); |
| return AVERROR(EINVAL); |
| } |
| compact->item_sep = compact->item_sep_str[0]; |
| |
| compact->buf_size = ESCAPE_INIT_BUF_SIZE; |
| if (!(compact->buf = av_malloc(compact->buf_size))) |
| return AVERROR(ENOMEM); |
| |
| if (!strcmp(compact->escape_mode_str, "none")) compact->escape_str = none_escape_str; |
| else if (!strcmp(compact->escape_mode_str, "c" )) compact->escape_str = c_escape_str; |
| else if (!strcmp(compact->escape_mode_str, "csv" )) compact->escape_str = csv_escape_str; |
| else { |
| av_log(wctx, AV_LOG_ERROR, "Unknown escape mode '%s'\n", compact->escape_mode_str); |
| return AVERROR(EINVAL); |
| } |
| |
| return 0; |
| } |
| |
| static av_cold void compact_uninit(WriterContext *wctx) |
| { |
| CompactContext *compact = wctx->priv; |
| |
| av_freep(&compact->item_sep_str); |
| av_freep(&compact->buf); |
| av_freep(&compact->escape_mode_str); |
| } |
| |
| static void compact_print_section_header(WriterContext *wctx, const char *section) |
| { |
| CompactContext *compact = wctx->priv; |
| |
| printf("%s%c", section, compact->item_sep); |
| } |
| |
| static void compact_print_section_footer(WriterContext *wctx, const char *section) |
| { |
| printf("\n"); |
| } |
| |
| static void compact_print_str(WriterContext *wctx, const char *key, const char *value) |
| { |
| CompactContext *compact = wctx->priv; |
| |
| if (wctx->nb_item) printf("%c", compact->item_sep); |
| if (!compact->nokey) |
| printf("%s=", key); |
| printf("%s", compact->escape_str(&compact->buf, &compact->buf_size, |
| value, compact->item_sep, wctx)); |
| } |
| |
| static void compact_print_int(WriterContext *wctx, const char *key, long long int value) |
| { |
| CompactContext *compact = wctx->priv; |
| |
| if (wctx->nb_item) printf("%c", compact->item_sep); |
| if (!compact->nokey) |
| printf("%s=", key); |
| printf("%lld", value); |
| } |
| |
| static void compact_show_tags(WriterContext *wctx, AVDictionary *dict) |
| { |
| CompactContext *compact = wctx->priv; |
| AVDictionaryEntry *tag = NULL; |
| |
| while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) { |
| if (wctx->nb_item) printf("%c", compact->item_sep); |
| if (!compact->nokey) |
| printf("tag:%s=", compact->escape_str(&compact->buf, &compact->buf_size, |
| tag->key, compact->item_sep, wctx)); |
| printf("%s", compact->escape_str(&compact->buf, &compact->buf_size, |
| tag->value, compact->item_sep, wctx)); |
| } |
| } |
| |
| static const Writer compact_writer = { |
| .name = "compact", |
| .priv_size = sizeof(CompactContext), |
| .init = compact_init, |
| .uninit = compact_uninit, |
| .print_section_header = compact_print_section_header, |
| .print_section_footer = compact_print_section_footer, |
| .print_integer = compact_print_int, |
| .print_string = compact_print_str, |
| .show_tags = compact_show_tags, |
| .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS, |
| }; |
| |
| /* CSV output */ |
| |
| static av_cold int csv_init(WriterContext *wctx, const char *args, void *opaque) |
| { |
| return compact_init(wctx, "item_sep=,:nokey=1:escape=csv", opaque); |
| } |
| |
| static const Writer csv_writer = { |
| .name = "csv", |
| .priv_size = sizeof(CompactContext), |
| .init = csv_init, |
| .uninit = compact_uninit, |
| .print_section_header = compact_print_section_header, |
| .print_section_footer = compact_print_section_footer, |
| .print_integer = compact_print_int, |
| .print_string = compact_print_str, |
| .show_tags = compact_show_tags, |
| .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS, |
| }; |
| |
| /* JSON output */ |
| |
| typedef struct { |
| int multiple_entries; ///< tells if the given chapter requires multiple entries |
| char *buf; |
| size_t buf_size; |
| } JSONContext; |
| |
| static av_cold int json_init(WriterContext *wctx, const char *args, void *opaque) |
| { |
| JSONContext *json = wctx->priv; |
| |
| json->buf_size = ESCAPE_INIT_BUF_SIZE; |
| if (!(json->buf = av_malloc(json->buf_size))) |
| return AVERROR(ENOMEM); |
| |
| return 0; |
| } |
| |
| static av_cold void json_uninit(WriterContext *wctx) |
| { |
| JSONContext *json = wctx->priv; |
| av_freep(&json->buf); |
| } |
| |
| static const char *json_escape_str(char **dst, size_t *dst_size, const char *src, |
| void *log_ctx) |
| { |
| static const char json_escape[] = {'"', '\\', '\b', '\f', '\n', '\r', '\t', 0}; |
| static const char json_subst[] = {'"', '\\', 'b', 'f', 'n', 'r', 't', 0}; |
| const char *p; |
| char *q; |
| size_t size = 1; |
| |
| // compute the length of the escaped string |
| for (p = src; *p; p++) { |
| ESCAPE_CHECK_SIZE(src, size, SIZE_MAX-6); |
| if (strchr(json_escape, *p)) size += 2; // simple escape |
| else if ((unsigned char)*p < 32) size += 6; // handle non-printable chars |
| else size += 1; // char copy |
| } |
| ESCAPE_REALLOC_BUF(dst_size, dst, src, size); |
| |
| q = *dst; |
| for (p = src; *p; p++) { |
| char *s = strchr(json_escape, *p); |
| if (s) { |
| *q++ = '\\'; |
| *q++ = json_subst[s - json_escape]; |
| } else if ((unsigned char)*p < 32) { |
| snprintf(q, 7, "\\u00%02x", *p & 0xff); |
| q += 6; |
| } else { |
| *q++ = *p; |
| } |
| } |
| *q = 0; |
| return *dst; |
| } |
| |
| static void json_print_header(WriterContext *wctx) |
| { |
| printf("{"); |
| } |
| |
| static void json_print_footer(WriterContext *wctx) |
| { |
| printf("\n}\n"); |
| } |
| |
| static void json_print_chapter_header(WriterContext *wctx, const char *chapter) |
| { |
| JSONContext *json = wctx->priv; |
| |
| if (wctx->nb_chapter) |
| printf(","); |
| json->multiple_entries = !strcmp(chapter, "packets") || !strcmp(chapter, "streams"); |
| printf("\n \"%s\":%s", json_escape_str(&json->buf, &json->buf_size, chapter, wctx), |
| json->multiple_entries ? " [" : " "); |
| } |
| |
| static void json_print_chapter_footer(WriterContext *wctx, const char *chapter) |
| { |
| JSONContext *json = wctx->priv; |
| |
| if (json->multiple_entries) |
| printf("]"); |
| } |
| |
| static void json_print_section_header(WriterContext *wctx, const char *section) |
| { |
| if (wctx->nb_section) printf(","); |
| printf("{\n"); |
| } |
| |
| static void json_print_section_footer(WriterContext *wctx, const char *section) |
| { |
| printf("\n }"); |
| } |
| |
| static inline void json_print_item_str(WriterContext *wctx, |
| const char *key, const char *value, |
| const char *indent) |
| { |
| JSONContext *json = wctx->priv; |
| |
| printf("%s\"%s\":", indent, json_escape_str(&json->buf, &json->buf_size, key, wctx)); |
| printf(" \"%s\"", json_escape_str(&json->buf, &json->buf_size, value, wctx)); |
| } |
| |
| #define INDENT " " |
| |
| static void json_print_str(WriterContext *wctx, const char *key, const char *value) |
| { |
| if (wctx->nb_item) printf(",\n"); |
| json_print_item_str(wctx, key, value, INDENT); |
| } |
| |
| static void json_print_int(WriterContext *wctx, const char *key, long long int value) |
| { |
| JSONContext *json = wctx->priv; |
| |
| if (wctx->nb_item) printf(",\n"); |
| printf(INDENT "\"%s\": %lld", |
| json_escape_str(&json->buf, &json->buf_size, key, wctx), value); |
| } |
| |
| static void json_show_tags(WriterContext *wctx, AVDictionary *dict) |
| { |
| AVDictionaryEntry *tag = NULL; |
| int is_first = 1; |
| if (!dict) |
| return; |
| printf(",\n" INDENT "\"tags\": {\n"); |
| while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) { |
| if (is_first) is_first = 0; |
| else printf(",\n"); |
| json_print_item_str(wctx, tag->key, tag->value, INDENT INDENT); |
| } |
| printf("\n }"); |
| } |
| |
| static const Writer json_writer = { |
| .name = "json", |
| .priv_size = sizeof(JSONContext), |
| .init = json_init, |
| .uninit = json_uninit, |
| .print_header = json_print_header, |
| .print_footer = json_print_footer, |
| .print_chapter_header = json_print_chapter_header, |
| .print_chapter_footer = json_print_chapter_footer, |
| .print_section_header = json_print_section_header, |
| .print_section_footer = json_print_section_footer, |
| .print_integer = json_print_int, |
| .print_string = json_print_str, |
| .show_tags = json_show_tags, |
| }; |
| |
| static void writer_register_all(void) |
| { |
| static int initialized; |
| |
| if (initialized) |
| return; |
| initialized = 1; |
| |
| writer_register(&default_writer); |
| writer_register(&compact_writer); |
| writer_register(&csv_writer); |
| writer_register(&json_writer); |
| } |
| |
| #define print_fmt(k, f, ...) do { \ |
| if (fast_asprintf(&pbuf, f, __VA_ARGS__)) \ |
| writer_print_string(w, k, pbuf.s, 0); \ |
| } while (0) |
| |
| #define print_fmt_opt(k, f, ...) do { \ |
| if (fast_asprintf(&pbuf, f, __VA_ARGS__)) \ |
| writer_print_string(w, k, pbuf.s, 1); \ |
| } while (0) |
| |
| #define print_int(k, v) writer_print_integer(w, k, v) |
| #define print_str(k, v) writer_print_string(w, k, v, 0) |
| #define print_str_opt(k, v) writer_print_string(w, k, v, 1) |
| #define print_time(k, v, tb) writer_print_time(w, k, v, tb) |
| #define print_ts(k, v) writer_print_ts(w, k, v) |
| #define print_val(k, v, u) writer_print_string(w, k, \ |
| value_string(val_str, sizeof(val_str), (struct unit_value){.val.i = v, .unit=u}), 0) |
| #define print_section_header(s) writer_print_section_header(w, s) |
| #define print_section_footer(s) writer_print_section_footer(w, s) |
| #define show_tags(metadata) writer_show_tags(w, metadata) |
| |
| static void show_packet(WriterContext *w, AVFormatContext *fmt_ctx, AVPacket *pkt, int packet_idx) |
| { |
| char val_str[128]; |
| AVStream *st = fmt_ctx->streams[pkt->stream_index]; |
| struct print_buf pbuf = {.s = NULL}; |
| const char *s; |
| |
| print_section_header("packet"); |
| s = av_get_media_type_string(st->codec->codec_type); |
| if (s) print_str ("codec_type", s); |
| else print_str_opt("codec_type", "unknown"); |
| print_int("stream_index", pkt->stream_index); |
| print_ts ("pts", pkt->pts); |
| print_time("pts_time", pkt->pts, &st->time_base); |
| print_ts ("dts", pkt->dts); |
| print_time("dts_time", pkt->dts, &st->time_base); |
| print_ts ("duration", pkt->duration); |
| print_time("duration_time", pkt->duration, &st->time_base); |
| print_val("size", pkt->size, unit_byte_str); |
| if (pkt->pos != -1) print_fmt ("pos", "%"PRId64, pkt->pos); |
| else print_str_opt("pos", "N/A"); |
| print_fmt("flags", "%c", pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_'); |
| print_section_footer("packet"); |
| |
| av_free(pbuf.s); |
| fflush(stdout); |
| } |
| |
| static void show_packets(WriterContext *w, AVFormatContext *fmt_ctx) |
| { |
| AVPacket pkt; |
| int i = 0; |
| |
| av_init_packet(&pkt); |
| |
| while (!av_read_frame(fmt_ctx, &pkt)) |
| show_packet(w, fmt_ctx, &pkt, i++); |
| } |
| |
| static void show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx) |
| { |
| AVStream *stream = fmt_ctx->streams[stream_idx]; |
| AVCodecContext *dec_ctx; |
| AVCodec *dec; |
| char val_str[128]; |
| const char *s; |
| AVRational display_aspect_ratio; |
| struct print_buf pbuf = {.s = NULL}; |
| |
| print_section_header("stream"); |
| |
| print_int("index", stream->index); |
| |
| if ((dec_ctx = stream->codec)) { |
| if ((dec = dec_ctx->codec)) { |
| print_str("codec_name", dec->name); |
| print_str("codec_long_name", dec->long_name); |
| } else { |
| print_str_opt("codec_name", "unknown"); |
| print_str_opt("codec_long_name", "unknown"); |
| } |
| |
| s = av_get_media_type_string(dec_ctx->codec_type); |
| if (s) print_str ("codec_type", s); |
| else print_str_opt("codec_type", "unknown"); |
| print_fmt("codec_time_base", "%d/%d", dec_ctx->time_base.num, dec_ctx->time_base.den); |
| |
| /* print AVI/FourCC tag */ |
| av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag); |
| print_str("codec_tag_string", val_str); |
| print_fmt("codec_tag", "0x%04x", dec_ctx->codec_tag); |
| |
| switch (dec_ctx->codec_type) { |
| case AVMEDIA_TYPE_VIDEO: |
| print_int("width", dec_ctx->width); |
| print_int("height", dec_ctx->height); |
| print_int("has_b_frames", dec_ctx->has_b_frames); |
| if (dec_ctx->sample_aspect_ratio.num) { |
| print_fmt("sample_aspect_ratio", "%d:%d", |
| dec_ctx->sample_aspect_ratio.num, |
| dec_ctx->sample_aspect_ratio.den); |
| av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den, |
| dec_ctx->width * dec_ctx->sample_aspect_ratio.num, |
| dec_ctx->height * dec_ctx->sample_aspect_ratio.den, |
| 1024*1024); |
| print_fmt("display_aspect_ratio", "%d:%d", |
| display_aspect_ratio.num, |
| display_aspect_ratio.den); |
| } else { |
| print_str_opt("sample_aspect_ratio", "N/A"); |
| print_str_opt("display_aspect_ratio", "N/A"); |
| } |
| s = av_get_pix_fmt_name(dec_ctx->pix_fmt); |
| if (s) print_str ("pix_fmt", s); |
| else print_str_opt("pix_fmt", "unknown"); |
| print_int("level", dec_ctx->level); |
| if (dec_ctx->timecode_frame_start >= 0) { |
| uint32_t tc = dec_ctx->timecode_frame_start; |
| print_fmt("timecode", "%02d:%02d:%02d%c%02d", |
| tc>>19 & 0x1f, // hours |
| tc>>13 & 0x3f, // minutes |
| tc>>6 & 0x3f, // seconds |
| tc & 1<<24 ? ';' : ':', // drop |
| tc & 0x3f); // frames |
| } else { |
| print_str_opt("timecode", "N/A"); |
| } |
| break; |
| |
| case AVMEDIA_TYPE_AUDIO: |
| s = av_get_sample_fmt_name(dec_ctx->sample_fmt); |
| if (s) print_str ("sample_fmt", s); |
| else print_str_opt("sample_fmt", "unknown"); |
| print_val("sample_rate", dec_ctx->sample_rate, unit_hertz_str); |
| print_int("channels", dec_ctx->channels); |
| print_int("bits_per_sample", av_get_bits_per_sample(dec_ctx->codec_id)); |
| break; |
| } |
| } else { |
| print_str_opt("codec_type", "unknown"); |
| } |
| if (dec_ctx->codec && dec_ctx->codec->priv_class) { |
| const AVOption *opt = NULL; |
| while (opt = av_opt_next(dec_ctx->priv_data,opt)) { |
| uint8_t *str; |
| if (opt->flags) continue; |
| if (av_opt_get(dec_ctx->priv_data, opt->name, 0, &str) >= 0) { |
| print_str(opt->name, str); |
| av_free(str); |
| } |
| } |
| } |
| |
| if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) print_fmt ("id", "0x%x", stream->id); |
| else print_str_opt("id", "N/A"); |
| print_fmt("r_frame_rate", "%d/%d", stream->r_frame_rate.num, stream->r_frame_rate.den); |
| print_fmt("avg_frame_rate", "%d/%d", stream->avg_frame_rate.num, stream->avg_frame_rate.den); |
| print_fmt("time_base", "%d/%d", stream->time_base.num, stream->time_base.den); |
| print_time("start_time", stream->start_time, &stream->time_base); |
| print_time("duration", stream->duration, &stream->time_base); |
| if (stream->nb_frames) print_fmt ("nb_frames", "%"PRId64, stream->nb_frames); |
| else print_str_opt("nb_frames", "N/A"); |
| show_tags(stream->metadata); |
| |
| print_section_footer("stream"); |
| av_free(pbuf.s); |
| fflush(stdout); |
| } |
| |
| static void show_streams(WriterContext *w, AVFormatContext *fmt_ctx) |
| { |
| int i; |
| for (i = 0; i < fmt_ctx->nb_streams; i++) |
| show_stream(w, fmt_ctx, i); |
| } |
| |
| static void show_format(WriterContext *w, AVFormatContext *fmt_ctx) |
| { |
| char val_str[128]; |
| int64_t size = avio_size(fmt_ctx->pb); |
| struct print_buf pbuf = {.s = NULL}; |
| |
| print_section_header("format"); |
| print_str("filename", fmt_ctx->filename); |
| print_int("nb_streams", fmt_ctx->nb_streams); |
| print_str("format_name", fmt_ctx->iformat->name); |
| print_str("format_long_name", fmt_ctx->iformat->long_name); |
| print_time("start_time", fmt_ctx->start_time, &AV_TIME_BASE_Q); |
| print_time("duration", fmt_ctx->duration, &AV_TIME_BASE_Q); |
| if (size >= 0) print_val ("size", size, unit_byte_str); |
| else print_str_opt("size", "N/A"); |
| if (fmt_ctx->bit_rate > 0) print_val ("bit_rate", fmt_ctx->bit_rate, unit_bit_per_second_str); |
| else print_str_opt("bit_rate", "N/A"); |
| show_tags(fmt_ctx->metadata); |
| print_section_footer("format"); |
| av_free(pbuf.s); |
| fflush(stdout); |
| } |
| |
| static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename) |
| { |
| int err, i; |
| AVFormatContext *fmt_ctx = NULL; |
| AVDictionaryEntry *t; |
| |
| if ((err = avformat_open_input(&fmt_ctx, filename, iformat, &format_opts)) < 0) { |
| print_error(filename, err); |
| return err; |
| } |
| if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) { |
| av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key); |
| return AVERROR_OPTION_NOT_FOUND; |
| } |
| |
| |
| /* fill the streams in the format context */ |
| if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) { |
| print_error(filename, err); |
| return err; |
| } |
| |
| av_dump_format(fmt_ctx, 0, filename, 0); |
| |
| /* bind a decoder to each input stream */ |
| for (i = 0; i < fmt_ctx->nb_streams; i++) { |
| AVStream *stream = fmt_ctx->streams[i]; |
| AVCodec *codec; |
| |
| if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) { |
| fprintf(stderr, "Unsupported codec with id %d for input stream %d\n", |
| stream->codec->codec_id, stream->index); |
| } else if (avcodec_open2(stream->codec, codec, NULL) < 0) { |
| fprintf(stderr, "Error while opening codec for input stream %d\n", |
| stream->index); |
| } |
| } |
| |
| *fmt_ctx_ptr = fmt_ctx; |
| return 0; |
| } |
| |
| #define PRINT_CHAPTER(name) do { \ |
| if (do_show_ ## name) { \ |
| writer_print_chapter_header(wctx, #name); \ |
| show_ ## name (wctx, fmt_ctx); \ |
| writer_print_chapter_footer(wctx, #name); \ |
| } \ |
| } while (0) |
| |
| static int probe_file(const char *filename) |
| { |
| AVFormatContext *fmt_ctx; |
| int ret; |
| const Writer *w; |
| char *buf; |
| char *w_name = NULL, *w_args = NULL; |
| WriterContext *wctx; |
| |
| writer_register_all(); |
| |
| if (!print_format) |
| print_format = av_strdup("default"); |
| w_name = av_strtok(print_format, "=", &buf); |
| w_args = buf; |
| |
| w = writer_get_by_name(w_name); |
| if (!w) { |
| av_log(NULL, AV_LOG_ERROR, "Unknown output format with name '%s'\n", w_name); |
| ret = AVERROR(EINVAL); |
| goto end; |
| } |
| |
| if ((ret = writer_open(&wctx, w, w_args, NULL)) < 0) |
| goto end; |
| if ((ret = open_input_file(&fmt_ctx, filename))) |
| goto end; |
| |
| writer_print_header(wctx); |
| PRINT_CHAPTER(packets); |
| PRINT_CHAPTER(streams); |
| PRINT_CHAPTER(format); |
| writer_print_footer(wctx); |
| |
| av_close_input_file(fmt_ctx); |
| writer_close(&wctx); |
| |
| end: |
| av_freep(&print_format); |
| |
| return ret; |
| } |
| |
| static void show_usage(void) |
| { |
| printf("Simple multimedia streams analyzer\n"); |
| printf("usage: %s [OPTIONS] [INPUT_FILE]\n", program_name); |
| printf("\n"); |
| } |
| |
| static int opt_format(const char *opt, const char *arg) |
| { |
| iformat = av_find_input_format(arg); |
| if (!iformat) { |
| fprintf(stderr, "Unknown input format: %s\n", arg); |
| return AVERROR(EINVAL); |
| } |
| return 0; |
| } |
| |
| static void opt_input_file(void *optctx, const char *arg) |
| { |
| if (input_filename) { |
| fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n", |
| arg, input_filename); |
| exit(1); |
| } |
| if (!strcmp(arg, "-")) |
| arg = "pipe:"; |
| input_filename = arg; |
| } |
| |
| static int opt_help(const char *opt, const char *arg) |
| { |
| av_log_set_callback(log_callback_help); |
| show_usage(); |
| show_help_options(options, "Main options:\n", 0, 0); |
| printf("\n"); |
| |
| show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM); |
| |
| return 0; |
| } |
| |
| static int opt_pretty(const char *opt, const char *arg) |
| { |
| show_value_unit = 1; |
| use_value_prefix = 1; |
| use_byte_value_binary_prefix = 1; |
| use_value_sexagesimal_format = 1; |
| return 0; |
| } |
| |
| static const OptionDef options[] = { |
| #include "cmdutils_common_opts.h" |
| { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" }, |
| { "unit", OPT_BOOL, {(void*)&show_value_unit}, "show unit of the displayed values" }, |
| { "prefix", OPT_BOOL, {(void*)&use_value_prefix}, "use SI prefixes for the displayed values" }, |
| { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix}, |
| "use binary prefixes for byte units" }, |
| { "sexagesimal", OPT_BOOL, {(void*)&use_value_sexagesimal_format}, |
| "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" }, |
| { "pretty", 0, {(void*)&opt_pretty}, |
| "prettify the format of displayed values, make it more human readable" }, |
| { "print_format", OPT_STRING | HAS_ARG, {(void*)&print_format}, |
| "set the output printing format (available formats are: default, compact, csv, json)", "format" }, |
| { "show_format", OPT_BOOL, {(void*)&do_show_format} , "show format/container info" }, |
| { "show_packets", OPT_BOOL, {(void*)&do_show_packets}, "show packets info" }, |
| { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" }, |
| { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" }, |
| { "i", HAS_ARG, {(void *)opt_input_file}, "read specified file", "input_file"}, |
| { NULL, }, |
| }; |
| |
| int main(int argc, char **argv) |
| { |
| int ret; |
| |
| parse_loglevel(argc, argv, options); |
| av_register_all(); |
| avformat_network_init(); |
| init_opts(); |
| #if CONFIG_AVDEVICE |
| avdevice_register_all(); |
| #endif |
| |
| show_banner(argc, argv, options); |
| parse_options(NULL, argc, argv, options, opt_input_file); |
| |
| if (!input_filename) { |
| show_usage(); |
| fprintf(stderr, "You have to specify one input file.\n"); |
| fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'.\n", program_name); |
| exit(1); |
| } |
| |
| ret = probe_file(input_filename); |
| |
| avformat_network_deinit(); |
| |
| return ret; |
| } |