| /* |
| * avprobe : Simple Media Prober based on the Libav libraries |
| * Copyright (c) 2007-2010 Stefano Sabatini |
| * |
| * This file is part of Libav. |
| * |
| * Libav 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. |
| * |
| * Libav 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 Libav; 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/opt.h" |
| #include "libavutil/pixdesc.h" |
| #include "libavutil/dict.h" |
| #include "libavutil/libm.h" |
| #include "libavdevice/avdevice.h" |
| #include "cmdutils.h" |
| |
| const char program_name[] = "avprobe"; |
| const int program_birth_year = 2007; |
| |
| static int do_show_format = 0; |
| static AVDictionary *fmt_entries_to_show = NULL; |
| static int nb_fmt_entries_to_show; |
| 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; |
| |
| /* globals */ |
| static const OptionDef *options; |
| |
| /* AVprobe context */ |
| static const char *input_filename; |
| static AVInputFormat *iformat = NULL; |
| |
| static const char *const binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" }; |
| static const char *const 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 exit_program(int ret) |
| { |
| av_dict_free(&fmt_entries_to_show); |
| 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; |
| void (*print_header)(void); |
| void (*print_footer)(void); |
| |
| void (*print_array_header) (const char *name); |
| void (*print_array_footer) (const char *name); |
| void (*print_object_header)(const char *name); |
| void (*print_object_footer)(const char *name); |
| |
| void (*print_integer) (const char *key, int64_t value); |
| void (*print_string) (const char *key, const char *value); |
| } OutputContext; |
| |
| static AVIOContext *probe_out = NULL; |
| static OutputContext octx; |
| #define AVP_INDENT() avio_printf(probe_out, "%*c", octx.level * 2, ' ') |
| |
| /* |
| * 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'); |
| } |
| |
| /* |
| * Alternate format, JSON |
| */ |
| |
| static void json_print_header(void) |
| { |
| avio_printf(probe_out, "{"); |
| } |
| static void json_print_footer(void) |
| { |
| avio_printf(probe_out, "}\n"); |
| } |
| |
| static void json_print_array_header(const char *name) |
| { |
| if (octx.prefix[octx.level -1].nb_elems) |
| avio_printf(probe_out, ",\n"); |
| AVP_INDENT(); |
| avio_printf(probe_out, "\"%s\" : ", name); |
| avio_printf(probe_out, "[\n"); |
| } |
| |
| static void json_print_array_footer(const char *name) |
| { |
| avio_printf(probe_out, "\n"); |
| AVP_INDENT(); |
| avio_printf(probe_out, "]"); |
| } |
| |
| static void json_print_object_header(const char *name) |
| { |
| if (octx.prefix[octx.level -1].nb_elems) |
| avio_printf(probe_out, ",\n"); |
| AVP_INDENT(); |
| if (octx.prefix[octx.level -1].type == OBJECT) |
| avio_printf(probe_out, "\"%s\" : ", name); |
| avio_printf(probe_out, "{\n"); |
| } |
| |
| static void json_print_object_footer(const char *name) |
| { |
| avio_printf(probe_out, "\n"); |
| AVP_INDENT(); |
| avio_printf(probe_out, "}"); |
| } |
| |
| static void json_print_integer(const char *key, int64_t value) |
| { |
| if (octx.prefix[octx.level -1].nb_elems) |
| avio_printf(probe_out, ",\n"); |
| AVP_INDENT(); |
| avio_printf(probe_out, "\"%s\" : %"PRId64"", key, value); |
| } |
| |
| static void json_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 '"' : avio_w8(probe_out, '\\'); |
| default: |
| if ((unsigned char)c < 32) |
| avio_printf(probe_out, "\\u00%02x", c & 0xff); |
| else |
| avio_w8(probe_out, c); |
| break; |
| } |
| } |
| } |
| |
| static void json_print_string(const char *key, const char *value) |
| { |
| if (octx.prefix[octx.level -1].nb_elems) |
| avio_printf(probe_out, ",\n"); |
| AVP_INDENT(); |
| avio_w8(probe_out, '\"'); |
| json_escape_print(key); |
| avio_printf(probe_out, "\" : \""); |
| json_escape_print(value); |
| avio_w8(probe_out, '\"'); |
| } |
| |
| /* |
| * old-style pseudo-INI |
| */ |
| static void old_print_object_header(const char *name) |
| { |
| char *str, *p; |
| |
| if (!strcmp(name, "tags")) |
| return; |
| |
| str = p = av_strdup(name); |
| while (*p) { |
| *p = toupper(*p); |
| p++; |
| } |
| |
| avio_printf(probe_out, "[%s]\n", str); |
| av_freep(&str); |
| } |
| |
| static void old_print_object_footer(const char *name) |
| { |
| char *str, *p; |
| |
| if (!strcmp(name, "tags")) |
| return; |
| |
| str = p = av_strdup(name); |
| while (*p) { |
| *p = toupper(*p); |
| p++; |
| } |
| |
| avio_printf(probe_out, "[/%s]\n", str); |
| av_freep(&str); |
| } |
| |
| static void old_print_string(const char *key, const char *value) |
| { |
| if (!strcmp(octx.prefix[octx.level - 1].name, "tags")) |
| avio_printf(probe_out, "TAG:"); |
| ini_print_string(key, value); |
| } |
| |
| /* |
| * 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); |
| } |
| } |
| |
| 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 (octx.print_header) |
| octx.print_header(); |
| probe_group_enter("root", OBJECT); |
| } |
| |
| static void probe_footer(void) |
| { |
| if (octx.print_footer) |
| octx.print_footer(); |
| probe_group_leave(); |
| } |
| |
| |
| static void probe_array_header(const char *name) |
| { |
| if (octx.print_array_header) |
| octx.print_array_header(name); |
| |
| probe_group_enter(name, ARRAY); |
| } |
| |
| static void probe_array_footer(const char *name) |
| { |
| probe_group_leave(); |
| if (octx.print_array_footer) |
| octx.print_array_footer(name); |
| } |
| |
| static void probe_object_header(const char *name) |
| { |
| if (octx.print_object_header) |
| octx.print_object_header(name); |
| |
| probe_group_enter(name, OBJECT); |
| } |
| |
| static void probe_object_footer(const char *name) |
| { |
| probe_group_leave(); |
| if (octx.print_object_footer) |
| octx.print_object_footer(name); |
| } |
| |
| static void probe_int(const char *key, int64_t value) |
| { |
| octx.print_integer(key, value); |
| octx.prefix[octx.level -1].nb_elems++; |
| } |
| |
| static void probe_str(const char *key, const char *value) |
| { |
| octx.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) { |
| double secs; |
| int hours, mins; |
| secs = val; |
| 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; |
| |
| if (unit == unit_byte_str && use_byte_value_binary_prefix) { |
| index = (int) log2(val) / 10; |
| index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) - 1); |
| val /= pow(2, index * 10); |
| prefix_string = binary_unit_prefixes[index]; |
| } else { |
| index = (int) (log10(val)) / 3; |
| index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) - 1); |
| val /= pow(10, index * 3); |
| prefix_string = decimal_unit_prefixes[index]; |
| } |
| snprintf(buf, buf_size, "%.*f%s%s", |
| index ? 3 : 0, val, |
| prefix_string, |
| show_value_unit ? unit : ""); |
| } else { |
| snprintf(buf, buf_size, "%f%s", val, show_value_unit ? unit : ""); |
| } |
| |
| return buf; |
| } |
| |
| static char *time_value_string(char *buf, int buf_size, int64_t val, |
| const AVRational *time_base) |
| { |
| if (val == AV_NOPTS_VALUE) { |
| snprintf(buf, buf_size, "N/A"); |
| } else { |
| value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str); |
| } |
| |
| return buf; |
| } |
| |
| static char *ts_value_string(char *buf, int buf_size, int64_t ts) |
| { |
| if (ts == AV_NOPTS_VALUE) { |
| snprintf(buf, buf_size, "N/A"); |
| } else { |
| snprintf(buf, buf_size, "%"PRId64, 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) { |
| case AVMEDIA_TYPE_VIDEO: return "video"; |
| case AVMEDIA_TYPE_AUDIO: return "audio"; |
| case AVMEDIA_TYPE_DATA: return "data"; |
| case AVMEDIA_TYPE_SUBTITLE: return "subtitle"; |
| case AVMEDIA_TYPE_ATTACHMENT: return "attachment"; |
| default: return "unknown"; |
| } |
| } |
| |
| static void show_packet(AVFormatContext *fmt_ctx, AVPacket *pkt) |
| { |
| char val_str[128]; |
| AVStream *st = fmt_ctx->streams[pkt->stream_index]; |
| |
| 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) |
| { |
| 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) |
| { |
| AVStream *stream = fmt_ctx->streams[stream_idx]; |
| AVCodecContext *dec_ctx; |
| const AVCodec *dec; |
| const char *profile; |
| char val_str[128]; |
| AVRational display_aspect_ratio; |
| |
| probe_object_header("stream"); |
| |
| probe_int("index", stream->index); |
| |
| if ((dec_ctx = stream->codec)) { |
| if ((dec = dec_ctx->codec)) { |
| probe_str("codec_name", dec->name); |
| probe_str("codec_long_name", dec->long_name); |
| } else { |
| probe_str("codec_name", "unknown"); |
| } |
| |
| 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); |
| probe_str("codec_tag_string", val_str); |
| probe_str("codec_tag", tag_string(val_str, sizeof(val_str), |
| dec_ctx->codec_tag)); |
| |
| /* print profile, if there is one */ |
| if (dec && (profile = av_get_profile_name(dec, dec_ctx->profile))) |
| probe_str("profile", profile); |
| |
| switch (dec_ctx->codec_type) { |
| case AVMEDIA_TYPE_VIDEO: |
| 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) { |
| 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); |
| probe_str("display_aspect_ratio", |
| rational_string(val_str, sizeof(val_str), ":", |
| &display_aspect_ratio)); |
| } |
| probe_str("pix_fmt", |
| dec_ctx->pix_fmt != PIX_FMT_NONE ? av_pix_fmt_descriptors[dec_ctx->pix_fmt].name |
| : "unknown"); |
| probe_int("level", dec_ctx->level); |
| break; |
| |
| case AVMEDIA_TYPE_AUDIO: |
| 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 { |
| probe_str("codec_type", "unknown"); |
| } |
| |
| if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) |
| probe_int("id", stream->id); |
| 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) |
| probe_int("nb_frames", stream->nb_frames); |
| |
| probe_dict(stream->metadata, "tags"); |
| |
| probe_object_footer("stream"); |
| } |
| |
| static void show_format(AVFormatContext *fmt_ctx) |
| { |
| char val_str[128]; |
| int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1; |
| |
| 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)); |
| probe_str("duration", |
| time_value_string(val_str, sizeof(val_str), |
| fmt_ctx->duration, &AV_TIME_BASE_Q)); |
| probe_str("size", |
| size >= 0 ? value_string(val_str, sizeof(val_str), |
| size, unit_byte_str) |
| : "unknown"); |
| probe_str("bit_rate", |
| value_string(val_str, sizeof(val_str), |
| fmt_ctx->bit_rate, unit_bit_per_second_str)); |
| |
| probe_dict(fmt_ctx->metadata, "tags"); |
| |
| probe_object_footer("format"); |
| } |
| |
| 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 (stream->codec->codec_id == AV_CODEC_ID_PROBE) { |
| fprintf(stderr, "Failed to probe codec for input stream %d\n", |
| stream->index); |
| } else 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; |
| } |
| |
| static void close_input_file(AVFormatContext **ctx_ptr) |
| { |
| int i; |
| AVFormatContext *fmt_ctx = *ctx_ptr; |
| |
| /* close decoder for each stream */ |
| for (i = 0; i < fmt_ctx->nb_streams; i++) { |
| AVStream *stream = fmt_ctx->streams[i]; |
| |
| avcodec_close(stream->codec); |
| } |
| avformat_close_input(ctx_ptr); |
| } |
| |
| static int probe_file(const char *filename) |
| { |
| AVFormatContext *fmt_ctx; |
| int ret, i; |
| |
| if ((ret = open_input_file(&fmt_ctx, filename))) |
| return ret; |
| |
| if (do_show_format) |
| show_format(fmt_ctx); |
| |
| 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_packets) |
| show_packets(fmt_ctx); |
| |
| close_input_file(&fmt_ctx); |
| return 0; |
| } |
| |
| 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(void *optctx, 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 int opt_output_format(void *optctx, const char *opt, const char *arg) |
| { |
| |
| if (!strcmp(arg, "json")) { |
| octx.print_header = json_print_header; |
| octx.print_footer = json_print_footer; |
| octx.print_array_header = json_print_array_header; |
| octx.print_array_footer = json_print_array_footer; |
| octx.print_object_header = json_print_object_header; |
| octx.print_object_footer = json_print_object_footer; |
| |
| octx.print_integer = json_print_integer; |
| octx.print_string = json_print_string; |
| } else if (!strcmp(arg, "ini")) { |
| octx.print_header = ini_print_header; |
| octx.print_footer = ini_print_footer; |
| octx.print_array_header = ini_print_array_header; |
| octx.print_object_header = ini_print_object_header; |
| |
| octx.print_integer = ini_print_integer; |
| octx.print_string = ini_print_string; |
| } else if (!strcmp(arg, "old")) { |
| octx.print_header = NULL; |
| octx.print_object_header = old_print_object_header; |
| octx.print_object_footer = old_print_object_footer; |
| |
| octx.print_string = old_print_string; |
| } else { |
| av_log(NULL, AV_LOG_ERROR, "Unsupported formatter %s\n", arg); |
| return AVERROR(EINVAL); |
| } |
| return 0; |
| } |
| |
| static int opt_show_format_entry(void *optctx, const char *opt, const char *arg) |
| { |
| do_show_format = 1; |
| nb_fmt_entries_to_show++; |
| octx.print_header = NULL; |
| octx.print_footer = NULL; |
| octx.print_array_header = NULL; |
| octx.print_array_footer = NULL; |
| octx.print_object_header = NULL; |
| octx.print_object_footer = NULL; |
| |
| octx.print_integer = show_format_entry_integer; |
| octx.print_string = show_format_entry_string; |
| av_dict_set(&fmt_entries_to_show, arg, "", 0); |
| 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; |
| } |
| |
| void show_help_default(const char *opt, const char *arg) |
| { |
| av_log_set_callback(log_callback_help); |
| show_usage(); |
| show_help_options(options, "Main options:", 0, 0, 0); |
| printf("\n"); |
| show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM); |
| } |
| |
| static int opt_pretty(void *optctx, 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 real_options[] = { |
| #include "cmdutils_common_opts.h" |
| { "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" }, |
| { "of", HAS_ARG, {.func_arg = opt_output_format}, "output the document either as ini or json", "output_format" }, |
| { "unit", OPT_BOOL, {&show_value_unit}, |
| "show unit of the displayed values" }, |
| { "prefix", OPT_BOOL, {&use_value_prefix}, |
| "use SI prefixes for the displayed values" }, |
| { "byte_binary_prefix", OPT_BOOL, {&use_byte_value_binary_prefix}, |
| "use binary prefixes for byte units" }, |
| { "sexagesimal", OPT_BOOL, {&use_value_sexagesimal_format}, |
| "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" }, |
| { "pretty", 0, {.func_arg = opt_pretty}, |
| "prettify the format of displayed values, make it more human readable" }, |
| { "show_format", OPT_BOOL, {&do_show_format} , "show format/container info" }, |
| { "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry}, |
| "show a particular entry from the format/container info", "entry" }, |
| { "show_packets", OPT_BOOL, {&do_show_packets}, "show packets info" }, |
| { "show_streams", OPT_BOOL, {&do_show_streams}, "show streams info" }, |
| { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default}, |
| "generic catch all option", "" }, |
| { 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); |
| |
| options = real_options; |
| parse_loglevel(argc, argv, options); |
| av_register_all(); |
| avformat_network_init(); |
| init_opts(); |
| #if CONFIG_AVDEVICE |
| avdevice_register_all(); |
| #endif |
| |
| show_banner(); |
| |
| octx.print_header = ini_print_header; |
| octx.print_footer = ini_print_footer; |
| |
| octx.print_array_header = ini_print_array_header; |
| octx.print_object_header = ini_print_object_header; |
| |
| octx.print_integer = ini_print_integer; |
| octx.print_string = ini_print_string; |
| |
| 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); |
| } |
| |
| probe_out = avio_alloc_context(buffer, AVP_BUFFSIZE, 1, NULL, NULL, |
| probe_buf_write, NULL); |
| if (!probe_out) |
| exit(1); |
| |
| probe_header(); |
| ret = probe_file(input_filename); |
| probe_footer(); |
| avio_flush(probe_out); |
| avio_close(probe_out); |
| |
| avformat_network_deinit(); |
| |
| return ret; |
| } |
