generic-library/ffmpeg
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ffprobe: introduce output format writers.

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This commit is contained in:
Clément Bœsch 2011-08-27 20:19:19 +02:00
parent f33be93b1b
commit 0629b1ff35
1 changed files with 204 additions and 84 deletions
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284
ffprobe.c
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@ -41,6 +41,8 @@ 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;
/* globals */
static const OptionDef options[];
@ -121,141 +123,215 @@ static const char *media_type_string(enum AVMediaType media_type)
return s ? s : "unknown";
}
static void show_packet(AVFormatContext *fmt_ctx, AVPacket *pkt)
struct writer {
const char *name;
const char *item_sep; ///< separator between key/value couples
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_header)(const char *);
void (*print_footer)(const char *);
void (*print_fmt_f)(const char *, const char *, va_list ap);
void (*print_int_f)(const char *, int);
void (*show_tags)(struct writer *w, AVDictionary *dict);
};
/* 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, va_list ap)
{
printf("%s=", key);
vprintf(fmt, ap);
}
static void default_print_int(const char *key, int value)
{
printf("%s=%d", key, value);
}
static void default_print_footer(const char *section)
{
printf("\n[/%s]", section);
}
/* Print helpers */
static void print_vfmt0(struct writer *w, const char *key, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
w->print_fmt_f(key, fmt, ap);
va_end(ap);
}
#define print_fmt0(k, f, a...) print_vfmt0(w, k, f, ##a)
#define print_fmt( k, f, a...) do { \
if (w->item_sep) \
printf("%s", w->item_sep); \
print_vfmt0(w, k, f, ##a); \
} while (0)
#define print_int0(k, v) w->print_int_f(k, v)
#define print_int( k, v) do { \
if (w->item_sep) \
printf("%s", w->item_sep); \
print_int0(k, v); \
} while (0)
#define print_str0(k, v) print_fmt0(k, "%s", v)
#define print_str( k, v) print_fmt (k, "%s", v)
static void show_packet(struct writer *w, AVFormatContext *fmt_ctx, AVPacket *pkt, int packet_idx)
{
char val_str[128];
AVStream *st = fmt_ctx->streams[pkt->stream_index];
printf("[PACKET]\n");
printf("codec_type=%s\n" , media_type_string(st->codec->codec_type));
printf("stream_index=%d\n" , pkt->stream_index);
printf("pts=%s\n" , ts_value_string (val_str, sizeof(val_str), pkt->pts));
printf("pts_time=%s\n" , time_value_string(val_str, sizeof(val_str), pkt->pts, &st->time_base));
printf("dts=%s\n" , ts_value_string (val_str, sizeof(val_str), pkt->dts));
printf("dts_time=%s\n" , time_value_string(val_str, sizeof(val_str), pkt->dts, &st->time_base));
printf("duration=%s\n" , ts_value_string (val_str, sizeof(val_str), pkt->duration));
printf("duration_time=%s\n", time_value_string(val_str, sizeof(val_str), pkt->duration, &st->time_base));
printf("size=%s\n" , value_string (val_str, sizeof(val_str), pkt->size, unit_byte_str));
printf("pos=%"PRId64"\n" , pkt->pos);
printf("flags=%c\n" , pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
printf("[/PACKET]\n");
if (packet_idx)
printf("%s", w->items_sep);
w->print_header("PACKET");
print_str0("codec_type", media_type_string(st->codec->codec_type));
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_str("dts", ts_value_string (val_str, sizeof(val_str), pkt->dts));
print_str("dts_time", time_value_string(val_str, sizeof(val_str), pkt->dts, &st->time_base));
print_str("duration", ts_value_string (val_str, sizeof(val_str), pkt->duration));
print_str("duration_time", time_value_string(val_str, sizeof(val_str), pkt->duration, &st->time_base));
print_str("size", value_string (val_str, sizeof(val_str), pkt->size, unit_byte_str));
print_fmt("pos", "%"PRId64, pkt->pos);
print_fmt("flags", "%c", pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
w->print_footer("PACKET");
fflush(stdout);
}
static void show_packets(AVFormatContext *fmt_ctx)
static void show_packets(struct writer *w, AVFormatContext *fmt_ctx)
{
AVPacket pkt;
int i = 0;
av_init_packet(&pkt);
while (!av_read_frame(fmt_ctx, &pkt))
show_packet(fmt_ctx, &pkt);
show_packet(w, fmt_ctx, &pkt, i++);
}
static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
static void default_show_tags(struct writer *w, AVDictionary *dict)
{
AVDictionaryEntry *tag = NULL;
while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
printf("\nTAG:");
print_str0(tag->key, tag->value);
}
}
static void show_stream(struct writer *w, AVFormatContext *fmt_ctx, int stream_idx)
{
AVStream *stream = fmt_ctx->streams[stream_idx];
AVCodecContext *dec_ctx;
AVCodec *dec;
char val_str[128];
AVDictionaryEntry *tag = NULL;
AVRational display_aspect_ratio;
printf("[STREAM]\n");
if (stream_idx)
printf("%s", w->items_sep);
w->print_header("STREAM");
printf("index=%d\n", stream->index);
print_int0("index", stream->index);
if ((dec_ctx = stream->codec)) {
if ((dec = dec_ctx->codec)) {
printf("codec_name=%s\n", dec->name);
printf("codec_long_name=%s\n", dec->long_name);
print_str("codec_name", dec->name);
print_str("codec_long_name", dec->long_name);
} else {
printf("codec_name=unknown\n");
print_str("codec_name", "unknown");
}
printf("codec_type=%s\n", media_type_string(dec_ctx->codec_type));
printf("codec_time_base=%d/%d\n", dec_ctx->time_base.num, dec_ctx->time_base.den);
print_str("codec_type", media_type_string(dec_ctx->codec_type));
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);
printf("codec_tag_string=%s\n", val_str);
printf("codec_tag=0x%04x\n", 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:
printf("width=%d\n", dec_ctx->width);
printf("height=%d\n", dec_ctx->height);
printf("has_b_frames=%d\n", dec_ctx->has_b_frames);
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) {
printf("sample_aspect_ratio=%d:%d\n", 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);
printf("display_aspect_ratio=%d:%d\n", display_aspect_ratio.num,
print_fmt("display_aspect_ratio", "%d:%d",
display_aspect_ratio.num,
display_aspect_ratio.den);
}
printf("pix_fmt=%s\n", dec_ctx->pix_fmt != PIX_FMT_NONE ?
av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown");
printf("level=%d\n", dec_ctx->level);
print_str("pix_fmt", dec_ctx->pix_fmt != PIX_FMT_NONE ? av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown");
print_int("level", dec_ctx->level);
break;
case AVMEDIA_TYPE_AUDIO:
printf("sample_rate=%s\n", value_string(val_str, sizeof(val_str),
dec_ctx->sample_rate,
unit_hertz_str));
printf("channels=%d\n", dec_ctx->channels);
printf("bits_per_sample=%d\n", av_get_bits_per_sample(dec_ctx->codec_id));
print_str("sample_rate", value_string(val_str, sizeof(val_str), 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 {
printf("codec_type=unknown\n");
print_fmt("codec_type", "unknown");
}
if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
printf("id=0x%x\n", stream->id);
printf("r_frame_rate=%d/%d\n", stream->r_frame_rate.num, stream->r_frame_rate.den);
printf("avg_frame_rate=%d/%d\n", stream->avg_frame_rate.num, stream->avg_frame_rate.den);
printf("time_base=%d/%d\n", stream->time_base.num, stream->time_base.den);
printf("start_time=%s\n", time_value_string(val_str, sizeof(val_str), stream->start_time,
&stream->time_base));
printf("duration=%s\n", time_value_string(val_str, sizeof(val_str), stream->duration,
&stream->time_base));
print_fmt("id=", "0x%x", stream->id);
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_str("start_time", time_value_string(val_str, sizeof(val_str), stream->start_time, &stream->time_base));
print_str("duration", time_value_string(val_str, sizeof(val_str), stream->duration, &stream->time_base));
if (stream->nb_frames)
printf("nb_frames=%"PRId64"\n", stream->nb_frames);
print_fmt("nb_frames", "%"PRId64, stream->nb_frames);
while ((tag = av_dict_get(stream->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
printf("TAG:%s=%s\n", tag->key, tag->value);
w->show_tags(w, stream->metadata);
printf("[/STREAM]\n");
w->print_footer("STREAM");
fflush(stdout);
}
static void show_format(AVFormatContext *fmt_ctx)
static void show_streams(struct writer *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(struct writer *w, AVFormatContext *fmt_ctx)
{
AVDictionaryEntry *tag = NULL;
char val_str[128];
printf("[FORMAT]\n");
printf("filename=%s\n", fmt_ctx->filename);
printf("nb_streams=%d\n", fmt_ctx->nb_streams);
printf("format_name=%s\n", fmt_ctx->iformat->name);
printf("format_long_name=%s\n", fmt_ctx->iformat->long_name);
printf("start_time=%s\n", time_value_string(val_str, sizeof(val_str), fmt_ctx->start_time,
&AV_TIME_BASE_Q));
printf("duration=%s\n", time_value_string(val_str, sizeof(val_str), fmt_ctx->duration,
&AV_TIME_BASE_Q));
printf("size=%s\n", value_string(val_str, sizeof(val_str), fmt_ctx->file_size,
unit_byte_str));
printf("bit_rate=%s\n", value_string(val_str, sizeof(val_str), fmt_ctx->bit_rate,
unit_bit_per_second_str));
while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
printf("TAG:%s=%s\n", tag->key, tag->value);
printf("[/FORMAT]\n");
w->print_header("FORMAT");
print_str0("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_str("start_time", time_value_string(val_str, sizeof(val_str), fmt_ctx->start_time, &AV_TIME_BASE_Q));
print_str("duration", time_value_string(val_str, sizeof(val_str), fmt_ctx->duration, &AV_TIME_BASE_Q));
print_str("size", value_string(val_str, sizeof(val_str), fmt_ctx->file_size, unit_byte_str));
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");
fflush(stdout);
}
@ -301,23 +377,67 @@ static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
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
static struct writer writers[] = {{
.name = "default",
.item_sep = "\n",
.items_sep = "\n",
.section_sep = "\n",
.footer = "\n",
WRITER_FUNC(default),
}
};
static int get_writer(const char *name)
{
int i;
if (!name)
return 0;
for (i = 0; i < FF_ARRAY_ELEMS(writers); i++)
if (!strcmp(writers[i].name, name))
return i;
return -1;
}
#define SECTION_PRINT(name, left) do { \
if (do_show_ ## name) { \
show_ ## name (w, fmt_ctx); \
if (left) \
printf("%s", w->section_sep); \
} \
} while (0)
static int probe_file(const char *filename)
{
AVFormatContext *fmt_ctx;
int ret, i;
int ret, writer_id;
struct writer *w;
writer_id = get_writer(print_format);
if (writer_id < 0) {
fprintf(stderr, "Invalid output format '%s'\n", print_format);
return AVERROR(EINVAL);
}
w = &writers[writer_id];
if ((ret = open_input_file(&fmt_ctx, filename)))
return ret;
if (do_show_packets)
show_packets(fmt_ctx);
if (w->header)
printf("%s", w->header);
if (do_show_streams)
for (i = 0; i < fmt_ctx->nb_streams; i++)
show_stream(fmt_ctx, i);
SECTION_PRINT(packets, do_show_streams || do_show_format);
SECTION_PRINT(streams, do_show_format);
SECTION_PRINT(format, 0);
if (do_show_format)
show_format(fmt_ctx);
if (w->footer)
printf("%s", w->footer);
av_close_input_file(fmt_ctx);
return 0;