static int show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx, InputStream *ist, int in_program)

{

    AVStream *stream = ist->st;

    AVCodecParameters *par;

    AVCodecContext *dec_ctx;

    char val_str[128];

    const char *s;

    AVRational sar, dar;

    AVBPrint pbuf;

    const AVCodecDescriptor *cd;

    int ret = 0;

    const char *profile = NULL;



    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);



    writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM : SECTION_ID_STREAM);



    print_int("index", stream->index);



    par     = stream->codecpar;

    dec_ctx = ist->dec_ctx;

    if (cd = avcodec_descriptor_get(par->codec_id)) {

        print_str("codec_name", cd->name);

        if (!do_bitexact) {

            print_str("codec_long_name",

                      cd->long_name ? cd->long_name : "unknown");

        }

    } else {

        print_str_opt("codec_name", "unknown");

        if (!do_bitexact) {

            print_str_opt("codec_long_name", "unknown");

        }

    }



    if (!do_bitexact && (profile = avcodec_profile_name(par->codec_id, par->profile)))

        print_str("profile", profile);

    else {

        if (par->profile != FF_PROFILE_UNKNOWN) {

            char profile_num[12];

            snprintf(profile_num, sizeof(profile_num), "%d", par->profile);

            print_str("profile", profile_num);

        } else

            print_str_opt("profile", "unknown");

    }



    s = av_get_media_type_string(par->codec_type);

    if (s) print_str    ("codec_type", s);

    else   print_str_opt("codec_type", "unknown");

#if FF_API_LAVF_AVCTX

    if (dec_ctx)

        print_q("codec_time_base", dec_ctx->time_base, '/');

#endif



    /* print AVI/FourCC tag */

    print_str("codec_tag_string",    av_fourcc2str(par->codec_tag));

    print_fmt("codec_tag", "0x%04"PRIx32, par->codec_tag);



    switch (par->codec_type) {

    case AVMEDIA_TYPE_VIDEO:

        print_int("width",        par->width);

        print_int("height",       par->height);

        if (dec_ctx) {

            print_int("coded_width",  dec_ctx->coded_width);

            print_int("coded_height", dec_ctx->coded_height);

        }

        print_int("has_b_frames", par->video_delay);

        sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, NULL);

        if (sar.den) {

            print_q("sample_aspect_ratio", sar, ':');

            av_reduce(&dar.num, &dar.den,

                      par->width  * sar.num,

                      par->height * sar.den,

                      1024*1024);

            print_q("display_aspect_ratio", dar, ':');

        } else {

            print_str_opt("sample_aspect_ratio", "N/A");

            print_str_opt("display_aspect_ratio", "N/A");

        }

        s = av_get_pix_fmt_name(par->format);

        if (s) print_str    ("pix_fmt", s);

        else   print_str_opt("pix_fmt", "unknown");

        print_int("level",   par->level);

        if (par->color_range != AVCOL_RANGE_UNSPECIFIED)

            print_str    ("color_range", av_color_range_name(par->color_range));

        else

            print_str_opt("color_range", "N/A");



        if (par->color_space != AVCOL_SPC_UNSPECIFIED)

            print_str("color_space", av_color_space_name(par->color_space));

        else

            print_str_opt("color_space", av_color_space_name(par->color_space));



        if (par->color_trc != AVCOL_TRC_UNSPECIFIED)

            print_str("color_transfer", av_color_transfer_name(par->color_trc));

        else

            print_str_opt("color_transfer", av_color_transfer_name(par->color_trc));



        if (par->color_primaries != AVCOL_PRI_UNSPECIFIED)

            print_str("color_primaries", av_color_primaries_name(par->color_primaries));

        else

            print_str_opt("color_primaries", av_color_primaries_name(par->color_primaries));



        if (par->chroma_location != AVCHROMA_LOC_UNSPECIFIED)

            print_str("chroma_location", av_chroma_location_name(par->chroma_location));

        else

            print_str_opt("chroma_location", av_chroma_location_name(par->chroma_location));



        if (par->field_order == AV_FIELD_PROGRESSIVE)

            print_str("field_order", "progressive");

        else if (par->field_order == AV_FIELD_TT)

            print_str("field_order", "tt");

        else if (par->field_order == AV_FIELD_BB)

            print_str("field_order", "bb");

        else if (par->field_order == AV_FIELD_TB)

            print_str("field_order", "tb");

        else if (par->field_order == AV_FIELD_BT)

            print_str("field_order", "bt");

        else

            print_str_opt("field_order", "unknown");



#if FF_API_PRIVATE_OPT

        if (dec_ctx && dec_ctx->timecode_frame_start >= 0) {

            char tcbuf[AV_TIMECODE_STR_SIZE];

            av_timecode_make_mpeg_tc_string(tcbuf, dec_ctx->timecode_frame_start);

            print_str("timecode", tcbuf);

        } else {

            print_str_opt("timecode", "N/A");

        }

#endif

        if (dec_ctx)

            print_int("refs", dec_ctx->refs);

        break;



    case AVMEDIA_TYPE_AUDIO:

        s = av_get_sample_fmt_name(par->format);

        if (s) print_str    ("sample_fmt", s);

        else   print_str_opt("sample_fmt", "unknown");

        print_val("sample_rate",     par->sample_rate, unit_hertz_str);

        print_int("channels",        par->channels);



        if (par->channel_layout) {

            av_bprint_clear(&pbuf);

            av_bprint_channel_layout(&pbuf, par->channels, par->channel_layout);

            print_str    ("channel_layout", pbuf.str);

        } else {

            print_str_opt("channel_layout", "unknown");

        }



        print_int("bits_per_sample", av_get_bits_per_sample(par->codec_id));

        break;



    case AVMEDIA_TYPE_SUBTITLE:

        if (par->width)

            print_int("width",       par->width);

        else

            print_str_opt("width",   "N/A");

        if (par->height)

            print_int("height",      par->height);

        else

            print_str_opt("height",  "N/A");

        break;

    }



    if (dec_ctx && dec_ctx->codec && dec_ctx->codec->priv_class && show_private_data) {

        const AVOption *opt = NULL;

        while (opt = av_opt_next(dec_ctx->priv_data,opt)) {

            uint8_t *str;

            if (opt->flags) continue;

            if (av_opt_get(dec_ctx->priv_data, opt->name, 0, &str) >= 0) {

                print_str(opt->name, str);

                av_free(str);

            }

        }

    }



    if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) print_fmt    ("id", "0x%x", stream->id);

    else                                          print_str_opt("id", "N/A");

    print_q("r_frame_rate",   stream->r_frame_rate,   '/');

    print_q("avg_frame_rate", stream->avg_frame_rate, '/');

    print_q("time_base",      stream->time_base,      '/');

    print_ts  ("start_pts",   stream->start_time);

    print_time("start_time",  stream->start_time, &stream->time_base);

    print_ts  ("duration_ts", stream->duration);

    print_time("duration",    stream->duration, &stream->time_base);

    if (par->bit_rate > 0)     print_val    ("bit_rate", par->bit_rate, unit_bit_per_second_str);

    else                       print_str_opt("bit_rate", "N/A");

#if FF_API_LAVF_AVCTX

    if (stream->codec->rc_max_rate > 0) print_val ("max_bit_rate", stream->codec->rc_max_rate, unit_bit_per_second_str);

    else                                print_str_opt("max_bit_rate", "N/A");

#endif

    if (dec_ctx && dec_ctx->bits_per_raw_sample > 0) print_fmt("bits_per_raw_sample", "%d", dec_ctx->bits_per_raw_sample);

    else                                             print_str_opt("bits_per_raw_sample", "N/A");

    if (stream->nb_frames) print_fmt    ("nb_frames", "%"PRId64, stream->nb_frames);

    else                   print_str_opt("nb_frames", "N/A");

    if (nb_streams_frames[stream_idx])  print_fmt    ("nb_read_frames", "%"PRIu64, nb_streams_frames[stream_idx]);

    else                                print_str_opt("nb_read_frames", "N/A");

    if (nb_streams_packets[stream_idx]) print_fmt    ("nb_read_packets", "%"PRIu64, nb_streams_packets[stream_idx]);

    else                                print_str_opt("nb_read_packets", "N/A");

    if (do_show_data)

        writer_print_data(w, "extradata", par->extradata,

                                          par->extradata_size);

    writer_print_data_hash(w, "extradata_hash", par->extradata,

                                                par->extradata_size);



    /* Print disposition information */

#define PRINT_DISPOSITION(flagname, name) do {                                \

        print_int(name, !!(stream->disposition & AV_DISPOSITION_##flagname)); \

    } while (0)



    if (do_show_stream_disposition) {

    writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM_DISPOSITION : SECTION_ID_STREAM_DISPOSITION);

    PRINT_DISPOSITION(DEFAULT,          "default");

    PRINT_DISPOSITION(DUB,              "dub");

    PRINT_DISPOSITION(ORIGINAL,         "original");

    PRINT_DISPOSITION(COMMENT,          "comment");

    PRINT_DISPOSITION(LYRICS,           "lyrics");

    PRINT_DISPOSITION(KARAOKE,          "karaoke");

    PRINT_DISPOSITION(FORCED,           "forced");

    PRINT_DISPOSITION(HEARING_IMPAIRED, "hearing_impaired");

    PRINT_DISPOSITION(VISUAL_IMPAIRED,  "visual_impaired");

    PRINT_DISPOSITION(CLEAN_EFFECTS,    "clean_effects");

    PRINT_DISPOSITION(ATTACHED_PIC,     "attached_pic");

    PRINT_DISPOSITION(TIMED_THUMBNAILS, "timed_thumbnails");

    writer_print_section_footer(w);

    }



    if (do_show_stream_tags)

        ret = show_tags(w, stream->metadata, in_program ? SECTION_ID_PROGRAM_STREAM_TAGS : SECTION_ID_STREAM_TAGS);



    if (stream->nb_side_data) {

        print_pkt_side_data(w, stream->codecpar, stream->side_data, stream->nb_side_data,

                            SECTION_ID_STREAM_SIDE_DATA_LIST,

                            SECTION_ID_STREAM_SIDE_DATA);

    }



    writer_print_section_footer(w);

    av_bprint_finalize(&pbuf, NULL);

    fflush(stdout);



    return ret;

}
