diff options
| -rw-r--r-- | avprobe.c | 502 |
1 files changed, 393 insertions, 109 deletions
@@ -64,6 +64,262 @@ void exit_program(int ret) exit(ret); } +/* + * The output is structured in array and objects that might contain items + * Array could require the objects within to not be named. + * Object could require the items within to be named. + * + * For flat representation the name of each section is saved on prefix so it + * can be rendered in order to represent nested structures (e.g. array of + * objects for the packets list). + * + * Within an array each element can need an unique identifier or an index. + * + * Nesting level is accounted separately. + */ + +typedef enum { + ARRAY, + OBJECT +} ProbeElementType; + +typedef struct { + const char *name; + ProbeElementType type; + int64_t index; + int64_t nb_elems; +} ProbeElement; + +typedef struct { + ProbeElement *prefix; + int level; +} OutputContext; + +static AVIOContext *probe_out = NULL; +static OutputContext octx; + +/* + * Default format, INI + * + * - all key and values are utf8 + * - '.' is the subgroup separator + * - newlines and the following characters are escaped + * - '\' is the escape character + * - '#' is the comment + * - '=' is the key/value separators + * - ':' is not used but usually parsed as key/value separator + */ + +static void ini_print_header(void) +{ + avio_printf(probe_out, "# avprobe output\n\n"); +} +static void ini_print_footer(void) +{ + avio_w8(probe_out, '\n'); +} + +static void ini_escape_print(const char *s) +{ + int i = 0; + char c = 0; + + while (c = s[i++]) { + switch (c) { + case '\r': avio_printf(probe_out, "%s", "\\r"); break; + case '\n': avio_printf(probe_out, "%s", "\\n"); break; + case '\f': avio_printf(probe_out, "%s", "\\f"); break; + case '\b': avio_printf(probe_out, "%s", "\\b"); break; + case '\t': avio_printf(probe_out, "%s", "\\t"); break; + case '\\': + case '#' : + case '=' : + case ':' : avio_w8(probe_out, '\\'); + default: + if ((unsigned char)c < 32) + avio_printf(probe_out, "\\x00%02x", c & 0xff); + else + avio_w8(probe_out, c); + break; + } + } +} + +static void ini_print_array_header(const char *name) +{ + if (octx.prefix[octx.level -1].nb_elems) + avio_printf(probe_out, "\n"); +} + +static void ini_print_object_header(const char *name) +{ + int i; + ProbeElement *el = octx.prefix + octx.level -1; + + if (el->nb_elems) + avio_printf(probe_out, "\n"); + + avio_printf(probe_out, "["); + + for (i = 1; i < octx.level; i++) { + el = octx.prefix + i; + avio_printf(probe_out, "%s.", el->name); + if (el->index >= 0) + avio_printf(probe_out, "%"PRId64".", el->index); + } + + avio_printf(probe_out, "%s", name); + if (el && el->type == ARRAY) + avio_printf(probe_out, ".%"PRId64"", el->nb_elems); + avio_printf(probe_out, "]\n"); +} + +static void ini_print_integer(const char *key, int64_t value) +{ + ini_escape_print(key); + avio_printf(probe_out, "=%"PRId64"\n", value); +} + + +static void ini_print_string(const char *key, const char *value) +{ + ini_escape_print(key); + avio_printf(probe_out, "="); + ini_escape_print(value); + avio_w8(probe_out, '\n'); +} + +/* + * Simple Formatter for single entries. + */ + +static void show_format_entry_integer(const char *key, int64_t value) +{ + if (key && av_dict_get(fmt_entries_to_show, key, NULL, 0)) { + if (nb_fmt_entries_to_show > 1) + avio_printf(probe_out, "%s=", key); + avio_printf(probe_out, "%"PRId64"\n", value); + } +} + +static void show_format_entry_string(const char *key, const char *value) +{ + if (key && av_dict_get(fmt_entries_to_show, key, NULL, 0)) { + if (nb_fmt_entries_to_show > 1) + avio_printf(probe_out, "%s=", key); + avio_printf(probe_out, "%s\n", value); + } +} + + +void (*print_header)(void) = ini_print_header; +void (*print_footer)(void) = ini_print_footer; + +void (*print_array_header) (const char *name) = ini_print_array_header; +void (*print_array_footer) (const char *name); +void (*print_object_header)(const char *name) = ini_print_object_header; +void (*print_object_footer)(const char *name); + +void (*print_integer) (const char *key, int64_t value) = ini_print_integer; +void (*print_string) (const char *key, const char *value) = ini_print_string; + + +static void probe_group_enter(const char *name, int type) +{ + int64_t count = -1; + + octx.prefix = + av_realloc(octx.prefix, sizeof(ProbeElement) * (octx.level + 1)); + + if (!octx.prefix || !name) { + fprintf(stderr, "Out of memory\n"); + exit(1); + } + + if (octx.level) { + ProbeElement *parent = octx.prefix + octx.level -1; + if (parent->type == ARRAY) + count = parent->nb_elems; + parent->nb_elems++; + } + + octx.prefix[octx.level++] = (ProbeElement){name, type, count, 0}; +} + +static void probe_group_leave(void) +{ + --octx.level; +} + +static void probe_header(void) +{ + if (print_header) + print_header(); + probe_group_enter("root", OBJECT); +} + +static void probe_footer(void) +{ + if (print_footer) + print_footer(); + probe_group_leave(); +} + + +static void probe_array_header(const char *name) +{ + if (print_array_header) + print_array_header(name); + + probe_group_enter(name, ARRAY); +} + +static void probe_array_footer(const char *name) +{ + probe_group_leave(); + if (print_array_footer) + print_array_footer(name); +} + +static void probe_object_header(const char *name) +{ + if (print_object_header) + print_object_header(name); + + probe_group_enter(name, OBJECT); +} + +static void probe_object_footer(const char *name) +{ + probe_group_leave(); + if (print_object_footer) + print_object_footer(name); +} + +static void probe_int(const char *key, int64_t value) +{ + print_integer(key, value); + octx.prefix[octx.level -1].nb_elems++; +} + +static void probe_str(const char *key, const char *value) +{ + print_string(key, value); + octx.prefix[octx.level -1].nb_elems++; +} + +static void probe_dict(AVDictionary *dict, const char *name) +{ + AVDictionaryEntry *entry = NULL; + if (!dict) + return; + probe_object_header(name); + while ((entry = av_dict_get(dict, "", entry, AV_DICT_IGNORE_SUFFIX))) { + probe_str(entry->key, entry->value); + } + probe_object_footer(name); +} + static char *value_string(char *buf, int buf_size, double val, const char *unit) { if (unit == unit_second_str && use_value_sexagesimal_format) { @@ -113,7 +369,7 @@ static char *time_value_string(char *buf, int buf_size, int64_t val, return buf; } -static char *ts_value_string (char *buf, int buf_size, int64_t ts) +static char *ts_value_string(char *buf, int buf_size, int64_t ts) { if (ts == AV_NOPTS_VALUE) { snprintf(buf, buf_size, "N/A"); @@ -124,6 +380,21 @@ static char *ts_value_string (char *buf, int buf_size, int64_t ts) return buf; } +static char *rational_string(char *buf, int buf_size, const char *sep, + const AVRational *rat) +{ + snprintf(buf, buf_size, "%d%s%d", rat->num, sep, rat->den); + return buf; +} + +static char *tag_string(char *buf, int buf_size, int tag) +{ + snprintf(buf, buf_size, "0x%04x", tag); + return buf; +} + + + static const char *media_type_string(enum AVMediaType media_type) { switch (media_type) { @@ -141,25 +412,25 @@ static void show_packet(AVFormatContext *fmt_ctx, AVPacket *pkt) 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"); + probe_object_header("packet"); + probe_str("codec_type", media_type_string(st->codec->codec_type)); + probe_int("stream_index", pkt->stream_index); + probe_str("pts", ts_value_string(val_str, sizeof(val_str), pkt->pts)); + probe_str("pts_time", time_value_string(val_str, sizeof(val_str), + pkt->pts, &st->time_base)); + probe_str("dts", ts_value_string(val_str, sizeof(val_str), pkt->dts)); + probe_str("dts_time", time_value_string(val_str, sizeof(val_str), + pkt->dts, &st->time_base)); + probe_str("duration", ts_value_string(val_str, sizeof(val_str), + pkt->duration)); + probe_str("duration_time", time_value_string(val_str, sizeof(val_str), + pkt->duration, + &st->time_base)); + probe_str("size", value_string(val_str, sizeof(val_str), + pkt->size, unit_byte_str)); + probe_int("pos", pkt->pos); + probe_str("flags", pkt->flags & AV_PKT_FLAG_KEY ? "K" : "_"); + probe_object_footer("packet"); } static void show_packets(AVFormatContext *fmt_ctx) @@ -167,9 +438,10 @@ static void show_packets(AVFormatContext *fmt_ctx) AVPacket pkt; av_init_packet(&pkt); - + probe_array_header("packets"); while (!av_read_frame(fmt_ctx, &pkt)) show_packet(fmt_ctx, &pkt); + probe_array_footer("packets"); } static void show_stream(AVFormatContext *fmt_ctx, int stream_idx) @@ -178,138 +450,120 @@ static void show_stream(AVFormatContext *fmt_ctx, int stream_idx) AVCodecContext *dec_ctx; AVCodec *dec; char val_str[128]; - AVDictionaryEntry *tag = NULL; AVRational display_aspect_ratio; - printf("[STREAM]\n"); + probe_object_header("stream"); - printf("index=%d\n", stream->index); + probe_int("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); + probe_str("codec_name", dec->name); + probe_str("codec_long_name", dec->long_name); } else { - printf("codec_name=unknown\n"); + probe_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); + probe_str("codec_type", media_type_string(dec_ctx->codec_type)); + probe_str("codec_time_base", + rational_string(val_str, sizeof(val_str), + "/", &dec_ctx->time_base)); /* 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); + probe_str("codec_tag_string", val_str); + probe_str("codec_tag", tag_string(val_str, sizeof(val_str), + 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); + probe_int("width", dec_ctx->width); + probe_int("height", dec_ctx->height); + probe_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, - dec_ctx->sample_aspect_ratio.den); + probe_str("sample_aspect_ratio", + rational_string(val_str, sizeof(val_str), ":", + &dec_ctx->sample_aspect_ratio)); 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, display_aspect_ratio.den); + probe_str("display_aspect_ratio", + rational_string(val_str, sizeof(val_str), ":", + &display_aspect_ratio)); } - printf("pix_fmt=%s\n", - dec_ctx->pix_fmt != PIX_FMT_NONE ? av_pix_fmt_descriptors[dec_ctx->pix_fmt].name + probe_str("pix_fmt", + dec_ctx->pix_fmt != PIX_FMT_NONE ? av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown"); - printf("level=%d\n", dec_ctx->level); + probe_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)); + probe_str("sample_rate", + value_string(val_str, sizeof(val_str), + dec_ctx->sample_rate, + unit_hertz_str)); + probe_int("channels", dec_ctx->channels); + probe_int("bits_per_sample", + av_get_bits_per_sample(dec_ctx->codec_id)); break; } } else { - printf("codec_type=unknown\n"); + probe_str("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)); + probe_int("id", stream->id); + probe_str("r_frame_rate", + rational_string(val_str, sizeof(val_str), "/", + &stream->r_frame_rate)); + probe_str("avg_frame_rate", + rational_string(val_str, sizeof(val_str), "/", + &stream->avg_frame_rate)); + probe_str("time_base", + rational_string(val_str, sizeof(val_str), "/", + &stream->time_base)); + probe_str("start_time", + time_value_string(val_str, sizeof(val_str), + stream->start_time, &stream->time_base)); + probe_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); - - while ((tag = av_dict_get(stream->metadata, "", tag, - AV_DICT_IGNORE_SUFFIX))) - printf("TAG:%s=%s\n", tag->key, tag->value); + probe_int("nb_frames", stream->nb_frames); - printf("[/STREAM]\n"); -} + probe_dict(stream->metadata, "tags"); -static void print_format_entry(const char *tag, - const char *val) -{ - if (!fmt_entries_to_show) { - if (tag) { - printf("%s=%s\n", tag, val); - } else { - printf("%s\n", val); - } - } else if (tag && av_dict_get(fmt_entries_to_show, tag, NULL, 0)) { - if (nb_fmt_entries_to_show > 1) - printf("%s=", tag); - printf("%s\n", val); - } + probe_object_footer("stream"); } static void show_format(AVFormatContext *fmt_ctx) { - AVDictionaryEntry *tag = NULL; char val_str[128]; int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1; - print_format_entry(NULL, "[FORMAT]"); - print_format_entry("filename", fmt_ctx->filename); - snprintf(val_str, sizeof(val_str) - 1, "%d", fmt_ctx->nb_streams); - print_format_entry("nb_streams", val_str); - print_format_entry("format_name", fmt_ctx->iformat->name); - print_format_entry("format_long_name", fmt_ctx->iformat->long_name); - print_format_entry("start_time", + probe_object_header("format"); + probe_str("filename", fmt_ctx->filename); + probe_int("nb_streams", fmt_ctx->nb_streams); + probe_str("format_name", fmt_ctx->iformat->name); + probe_str("format_long_name", fmt_ctx->iformat->long_name); + probe_str("start_time", time_value_string(val_str, sizeof(val_str), fmt_ctx->start_time, &AV_TIME_BASE_Q)); - print_format_entry("duration", + probe_str("duration", time_value_string(val_str, sizeof(val_str), fmt_ctx->duration, &AV_TIME_BASE_Q)); - print_format_entry("size", + probe_str("size", size >= 0 ? value_string(val_str, sizeof(val_str), size, unit_byte_str) : "unknown"); - print_format_entry("bit_rate", + probe_str("bit_rate", 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))) { - snprintf(val_str, sizeof(val_str) - 1, "TAG:%s", tag->key); - print_format_entry(val_str, tag->value); - } + probe_dict(fmt_ctx->metadata, "tags"); - print_format_entry(NULL, "[/FORMAT]"); + probe_object_footer("format"); } static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename) @@ -378,15 +632,18 @@ static int probe_file(const char *filename) if ((ret = open_input_file(&fmt_ctx, filename))) return ret; - if (do_show_packets) - show_packets(fmt_ctx); + if (do_show_format) + show_format(fmt_ctx); - if (do_show_streams) + if (do_show_streams) { + probe_array_header("streams"); for (i = 0; i < fmt_ctx->nb_streams; i++) show_stream(fmt_ctx, i); + probe_array_footer("streams"); + } - if (do_show_format) - show_format(fmt_ctx); + if (do_show_packets) + show_packets(fmt_ctx); close_input_file(&fmt_ctx); return 0; @@ -413,6 +670,15 @@ static int opt_show_format_entry(const char *opt, const char *arg) { do_show_format = 1; nb_fmt_entries_to_show++; + print_header = NULL; + print_footer = NULL; + print_array_header = NULL; + print_array_footer = NULL; + print_object_header = NULL; + print_object_footer = NULL; + + print_integer = show_format_entry_integer; + print_string = show_format_entry_string; av_dict_set(&fmt_entries_to_show, arg, "", 0); return 0; } @@ -470,9 +736,21 @@ static const OptionDef options[] = { { NULL, }, }; +static int probe_buf_write(void *opaque, uint8_t *buf, int buf_size) +{ + printf("%.*s", buf_size, buf); + return 0; +} + +#define AVP_BUFFSIZE 4096 + int main(int argc, char **argv) { int ret; + uint8_t *buffer = av_malloc(AVP_BUFFSIZE); + + if (!buffer) + exit(1); parse_loglevel(argc, argv, options); av_register_all(); @@ -494,10 +772,16 @@ int main(int argc, char **argv) exit(1); } - ret = probe_file(input_filename); + probe_out = avio_alloc_context(buffer, AVP_BUFFSIZE, 1, NULL, NULL, + probe_buf_write, NULL); + if (!probe_out) + exit(1); - uninit_opts(); - av_dict_free(&fmt_entries_to_show); + probe_header(); + ret = probe_file(input_filename); + probe_footer(); + avio_flush(probe_out); + avio_close(probe_out); avformat_network_deinit(); |
