PeerStreamer

/*

 * 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 "libavcodec/opt.h"

#include "libavutil/pixdesc.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_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[];

/* 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";

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) (log(val)/log(2)) / 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, "%.3f %s%s", 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 const char *codec_type_string(enum CodecType codec_type)

{

    switch (codec_type) {

    case CODEC_TYPE_VIDEO:        return "video";

    case CODEC_TYPE_AUDIO:        return "audio";

    case CODEC_TYPE_DATA:         return "data";

    case CODEC_TYPE_SUBTITLE:     return "subtitle";

    case CODEC_TYPE_ATTACHMENT:   return "attachment";

    default:                      return "unknown";

    }

}

static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)

{

    AVStream *stream = fmt_ctx->streams[stream_idx];

    AVCodecContext *dec_ctx;

    AVCodec *dec;

    char val_str[128];

    AVMetadataTag *tag;

    char a, b, c, d;

    printf("[STREAM]\n");

    printf("index=%d\n",        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);

        } else {

            printf("codec_name=unknown\n");

        }

        printf("codec_type=%s\n",         codec_type_string(dec_ctx->codec_type));

        printf("codec_time_base=%d/%d\n", dec_ctx->time_base.num, dec_ctx->time_base.den);

        /* print AVI/FourCC tag */

        a = dec_ctx->codec_tag     & 0xff;

        b = dec_ctx->codec_tag>>8  & 0xff;

        c = dec_ctx->codec_tag>>16 & 0xff;

        d = dec_ctx->codec_tag>>24 & 0xff;

        printf("codec_tag_string=");

        if (isprint(a)) printf("%c", a); else printf("[%d]", a);

        if (isprint(b)) printf("%c", b); else printf("[%d]", b);

        if (isprint(c)) printf("%c", c); else printf("[%d]", c);

        if (isprint(d)) printf("%c", d); else printf("[%d]", d);

        printf("\ncodec_tag=0x%04x\n", dec_ctx->codec_tag);

        switch (dec_ctx->codec_type) {

        case CODEC_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);

            printf("sample_aspect_ratio=%d:%d\n",  dec_ctx->sample_aspect_ratio.num,

                                                   dec_ctx->sample_aspect_ratio.den);

            printf("display_aspect_ratio=%d:%d\n", dec_ctx->sample_aspect_ratio.num,

                                                   dec_ctx->sample_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");

            break;

        case CODEC_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));

            break;

        }

    } else {

        printf("codec_type=unknown\n");

    }

    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);

    if (stream->language[0])

        printf("language=%s\n",            stream->language);

    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));

    while ((tag = av_metadata_get(stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))

        printf("TAG:%s=%s\n", tag->key, tag->value);

    printf("[/STREAM]\n");

}

static void show_format(AVFormatContext *fmt_ctx)

{

    AVMetadataTag *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_metadata_get(fmt_ctx->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))

        printf("TAG:%s=%s\n", tag->key, tag->value);

    printf("[/FORMAT]\n");

}

static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)

{

    int err, i;

    AVFormatContext *fmt_ctx;

    fmt_ctx = avformat_alloc_context();

    if ((err = av_open_input_file(&fmt_ctx, filename, iformat, 0, NULL)) < 0) {

        print_error(filename, err);

        return err;

    }

    /* fill the streams in the format context */

    if ((err = av_find_stream_info(fmt_ctx)) < 0) {

        print_error(filename, err);

        return err;

    }

    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 (id=%d) for input stream %d\n",

                    stream->codec->codec_id, stream->index);

        } else if (avcodec_open(stream->codec, codec) < 0) {

            fprintf(stderr, "Error while opening codec for input stream %d\n",

                    stream->index);

        }

    }

    *fmt_ctx_ptr = fmt_ctx;

    return 0;

}

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_streams)

        for (i = 0; i < fmt_ctx->nb_streams; i++)

            show_stream(fmt_ctx, i);

    if (do_show_format)

        show_format(fmt_ctx);

    av_close_input_file(fmt_ctx);

    return 0;

}

static void show_usage(void)

{

    printf("Simple multimedia streams analyzer\n");

    printf("usage: ffprobe [OPTIONS] [INPUT_FILE]\n");

    printf("\n");

}

static void opt_format(const char *arg)

{

    iformat = av_find_input_format(arg);

    if (!iformat) {

        fprintf(stderr, "Unknown input format: %s\n", arg);

        exit(1);

    }

}

static void opt_input_file(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 void show_help(void)

{

    show_usage();

    show_help_options(options, "Main options:\n", 0, 0);

    printf("\n");

}

static void opt_pretty(void)

{

    show_value_unit              = 1;

    use_value_prefix             = 1;

    use_byte_value_binary_prefix = 1;

    use_value_sexagesimal_format = 1;

}

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" },

    { "show_format",  OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },

    { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },

    { NULL, },

};

int main(int argc, char **argv)

{

    av_register_all();

#if CONFIG_AVDEVICE

    avdevice_register_all();

#endif

    show_banner();

    parse_options(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 ffprobe'.\n");

        exit(1);

    }

    return probe_file(input_filename);

}