diff options
Diffstat (limited to 'ffprobe.c')
| -rw-r--r-- | ffprobe.c | 1270 |
1 files changed, 1270 insertions, 0 deletions
diff --git a/ffprobe.c b/ffprobe.c new file mode 100644 index 0000000000..6af76953aa --- /dev/null +++ b/ffprobe.c @@ -0,0 +1,1270 @@ +/* + * 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(); + 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; +} |