static char *print_format;
-/* globals */
static const OptionDef options[];
/* FFprobe context */
return buf;
}
-static const char *media_type_string(enum AVMediaType media_type)
-{
- const char *s = av_get_media_type_string(media_type);
- return s ? s : "unknown";
-}
-
struct writer {
const char *name;
const char *items_sep; ///< separator between sets of key/value couples
const char *section_sep; ///< separator between sections (streams, packets, ...)
const char *header, *footer;
+ void (*print_section_start)(const char *, int);
+ void (*print_section_end) (const char *, int);
void (*print_header)(const char *);
void (*print_footer)(const char *);
- void (*print_fmt_f)(const char *, const char *, ...);
- void (*print_int_f)(const char *, int);
+ void (*print_integer)(const char *, int);
+ void (*print_string)(const char *, const char *);
void (*show_tags)(struct writer *w, AVDictionary *dict);
};
+/* JSON output */
+
+static void json_print_header(const char *section)
+{
+ printf("{\n");
+}
+
+static char *json_escape_str(const char *s)
+{
+ static const char json_escape[] = {'"', '\\', '\b', '\f', '\n', '\r', '\t', 0};
+ static const char json_subst[] = {'"', '\\', 'b', 'f', 'n', 'r', 't', 0};
+ char *ret, *p;
+ int i, len = 0;
+
+ // compute the length of the escaped string
+ for (i = 0; s[i]; i++) {
+ if (strchr(json_escape, s[i])) len += 2; // simple escape
+ else if ((unsigned char)s[i] < 32) len += 6; // handle non-printable chars
+ else len += 1; // char copy
+ }
+
+ p = ret = av_malloc(len + 1);
+ if (!p)
+ return NULL;
+ for (i = 0; s[i]; i++) {
+ char *q = strchr(json_escape, s[i]);
+ if (q) {
+ *p++ = '\\';
+ *p++ = json_subst[q - json_escape];
+ } else if ((unsigned char)s[i] < 32) {
+ snprintf(p, 7, "\\u00%02x", s[i] & 0xff);
+ p += 6;
+ } else {
+ *p++ = s[i];
+ }
+ }
+ *p = 0;
+ return ret;
+}
+
+static void json_print_str(const char *key, const char *value)
+{
+ char *key_esc = json_escape_str(key);
+ char *value_esc = json_escape_str(value);
+ printf(" \"%s\": \"%s\"",
+ key_esc ? key_esc : "",
+ value_esc ? value_esc : "");
+ av_free(key_esc);
+ av_free(value_esc);
+}
+
+static void json_print_int(const char *key, int value)
+{
+ char *key_esc = json_escape_str(key);
+ printf(" \"%s\": %d", key_esc ? key_esc : "", value);
+ av_free(key_esc);
+}
+
+static void json_print_footer(const char *section)
+{
+ printf("\n }");
+}
+
+static void json_print_section_start(const char *section, int multiple_entries)
+{
+ char *section_esc = json_escape_str(section);
+ printf("\n \"%s\":%s", section_esc ? section_esc : "",
+ multiple_entries ? " [" : " ");
+ av_free(section_esc);
+}
+
+static void json_print_section_end(const char *section, int multiple_entries)
+{
+ if (multiple_entries)
+ printf("]");
+}
+
+
/* Default output */
static void default_print_header(const char *section)
printf("[%s]\n", section);
}
-static void default_print_fmt(const char *key, const char *fmt, ...)
+static void default_print_str(const char *key, const char *value)
{
- va_list ap;
- va_start(ap, fmt);
- printf("%s=", key);
- vprintf(fmt, ap);
- va_end(ap);
+ printf("%s=%s", key, value);
}
static void default_print_int(const char *key, int value)
/* Print helpers */
-#define print_fmt0(k, f, ...) w->print_fmt_f(k, f, __VA_ARGS__)
+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 print_fmt0(k, f, ...) do { \
+ if (fast_asprintf(&pbuf, f, __VA_ARGS__)) \
+ w->print_string(k, pbuf.s); \
+} while (0)
#define print_fmt( k, f, ...) do { \
if (w->item_sep) \
printf("%s", w->item_sep); \
- w->print_fmt_f(k, f, __VA_ARGS__); \
+ print_fmt0(k, f, __VA_ARGS__); \
} while (0)
-#define print_int0(k, v) w->print_int_f(k, v)
+#define print_int0(k, v) w->print_integer(k, v)
#define print_int( k, v) do { \
if (w->item_sep) \
printf("%s", w->item_sep); \
{
char val_str[128];
AVStream *st = fmt_ctx->streams[pkt->stream_index];
+ struct print_buf pbuf = {.s = NULL};
if (packet_idx)
printf("%s", w->items_sep);
w->print_header("PACKET");
- print_str0("codec_type", media_type_string(st->codec->codec_type));
+ print_str0("codec_type", av_x_if_null(av_get_media_type_string(st->codec->codec_type), "unknown"));
print_int("stream_index", pkt->stream_index);
print_str("pts", ts_value_string (val_str, sizeof(val_str), pkt->pts));
print_str("pts_time", time_value_string(val_str, sizeof(val_str), pkt->pts, &st->time_base));
print_fmt("pos", "%"PRId64, pkt->pos);
print_fmt("flags", "%c", pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
w->print_footer("PACKET");
+ av_free(pbuf.s);
fflush(stdout);
}
show_packet(w, fmt_ctx, &pkt, i++);
}
+static void json_show_tags(struct writer *w, AVDictionary *dict)
+{
+ AVDictionaryEntry *tag = NULL;
+ struct print_buf pbuf = {.s = NULL};
+ int first = 1;
+
+ if (!dict)
+ return;
+ printf(",\n \"tags\": {\n");
+ while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
+ if (first) {
+ print_str0(tag->key, tag->value);
+ first = 0;
+ } else {
+ print_str(tag->key, tag->value);
+ }
+ }
+ printf("\n }");
+ av_free(pbuf.s);
+}
+
static void default_show_tags(struct writer *w, AVDictionary *dict)
{
AVDictionaryEntry *tag = NULL;
+ struct print_buf pbuf = {.s = NULL};
while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
printf("\nTAG:");
print_str0(tag->key, tag->value);
}
+ av_free(pbuf.s);
}
static void show_stream(struct writer *w, AVFormatContext *fmt_ctx, int stream_idx)
AVCodec *dec;
char val_str[128];
AVRational display_aspect_ratio;
+ struct print_buf pbuf = {.s = NULL};
if (stream_idx)
printf("%s", w->items_sep);
print_str("codec_name", "unknown");
}
- print_str("codec_type", media_type_string(dec_ctx->codec_type));
+ print_str("codec_type", av_x_if_null(av_get_media_type_string(dec_ctx->codec_type), "unknown"));
print_fmt("codec_time_base", "%d/%d", dec_ctx->time_base.num, dec_ctx->time_base.den);
/* print AVI/FourCC tag */
display_aspect_ratio.num,
display_aspect_ratio.den);
}
- print_str("pix_fmt", dec_ctx->pix_fmt != PIX_FMT_NONE ? av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown");
+ print_str("pix_fmt", av_x_if_null(av_get_pix_fmt_name(dec_ctx->pix_fmt), "unknown"));
print_int("level", dec_ctx->level);
break;
w->show_tags(w, stream->metadata);
w->print_footer("STREAM");
+ av_free(pbuf.s);
fflush(stdout);
}
static void show_format(struct writer *w, AVFormatContext *fmt_ctx)
{
char val_str[128];
+ struct print_buf pbuf = {.s = NULL};
w->print_header("FORMAT");
print_str0("filename", fmt_ctx->filename);
print_str("bit_rate", value_string(val_str, sizeof(val_str), fmt_ctx->bit_rate, unit_bit_per_second_str));
w->show_tags(w, fmt_ctx->metadata);
w->print_footer("FORMAT");
+ av_free(pbuf.s);
fflush(stdout);
}
return 0;
}
-#define WRITER_FUNC(func) \
- .print_header = func ## _print_header, \
- .print_footer = func ## _print_footer, \
- .print_fmt_f = func ## _print_fmt, \
- .print_int_f = func ## _print_int, \
- .show_tags = func ## _show_tags
+#define WRITER_FUNC(func) \
+ .print_header = func ## _print_header, \
+ .print_footer = func ## _print_footer, \
+ .print_integer = func ## _print_int, \
+ .print_string = func ## _print_str, \
+ .show_tags = func ## _show_tags
static struct writer writers[] = {{
.name = "default",
.section_sep = "\n",
.footer = "\n",
WRITER_FUNC(default),
+ },{
+ .name = "json",
+ .header = "{",
+ .item_sep = ",\n",
+ .items_sep = ",",
+ .section_sep = ",",
+ .footer = "\n}\n",
+ .print_section_start = json_print_section_start,
+ .print_section_end = json_print_section_end,
+ WRITER_FUNC(json),
}
};
return -1;
}
-#define SECTION_PRINT(name, left) do { \
+#define SECTION_PRINT(name, multiple_entries, left) do { \
if (do_show_ ## name) { \
+ if (w->print_section_start) \
+ w->print_section_start(#name, multiple_entries); \
show_ ## name (w, fmt_ctx); \
+ if (w->print_section_end) \
+ w->print_section_end(#name, multiple_entries); \
if (left) \
printf("%s", w->section_sep); \
} \
if (w->header)
printf("%s", w->header);
- SECTION_PRINT(packets, do_show_streams || do_show_format);
- SECTION_PRINT(streams, do_show_format);
- SECTION_PRINT(format, 0);
+ SECTION_PRINT(packets, 1, do_show_streams || do_show_format);
+ SECTION_PRINT(streams, 1, do_show_format);
+ SECTION_PRINT(format, 0, 0);
if (w->footer)
printf("%s", w->footer);
"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, 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" },
projects / ffmpeg / blobdiff