static void ffprobe_show_pixel_formats(WriterContext *w)
{
    const AVPixFmtDescriptor *pixdesc = NULL;
    int i, n;

    writer_print_section_header(w, SECTION_ID_PIXEL_FORMATS);
    while (pixdesc = av_pix_fmt_desc_next(pixdesc)) {
        writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT);
        print_str("name", pixdesc->name);
        print_int("nb_components", pixdesc->nb_components);
        if ((pixdesc->nb_components >= 3) && !(pixdesc->flags & AV_PIX_FMT_FLAG_RGB)) {
            print_int    ("log2_chroma_w", pixdesc->log2_chroma_w);
            print_int    ("log2_chroma_h", pixdesc->log2_chroma_h);
        } else {
            print_str_opt("log2_chroma_w", "N/A");
            print_str_opt("log2_chroma_h", "N/A");
        }
        n = av_get_bits_per_pixel(pixdesc);
        if (n) print_int    ("bits_per_pixel", n);
        else   print_str_opt("bits_per_pixel", "N/A");
        if (do_show_pixel_format_flags) {
            writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_FLAGS);
            PRINT_PIX_FMT_FLAG(BE,        "big_endian");
            PRINT_PIX_FMT_FLAG(PAL,       "palette");
            PRINT_PIX_FMT_FLAG(BITSTREAM, "bitstream");
            PRINT_PIX_FMT_FLAG(HWACCEL,   "hwaccel");
            PRINT_PIX_FMT_FLAG(PLANAR,    "planar");
            PRINT_PIX_FMT_FLAG(RGB,       "rgb");
            PRINT_PIX_FMT_FLAG(PSEUDOPAL, "pseudopal");
            PRINT_PIX_FMT_FLAG(ALPHA,     "alpha");
            writer_print_section_footer(w);
        }
        if (do_show_pixel_format_components && (pixdesc->nb_components > 0)) {
            writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENTS);
            for (i = 0; i < pixdesc->nb_components; i++) {
                writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENT);
                print_int("index", i + 1);
                print_int("bit_depth", pixdesc->comp[i].depth);
                writer_print_section_footer(w);
            }
            writer_print_section_footer(w);
        }
        writer_print_section_footer(w);
    }
    writer_print_section_footer(w);
}
static void ffprobe_show_pixel_formats(WriterContext *w)
{
    const AVPixFmtDescriptor *pixdesc = NULL;
    int i, n;

    writer_print_section_header(w, SECTION_ID_PIXEL_FORMATS);
    while (pixdesc = av_pix_fmt_desc_next(pixdesc)) {
        writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT);
        print_str("name", pixdesc->name);
        print_int("nb_components", pixdesc->nb_components);
        if ((pixdesc->nb_components >= 3) && !(pixdesc->flags & AV_PIX_FMT_FLAG_RGB)) {
            print_int    ("log2_chroma_w", pixdesc->log2_chroma_w);
            print_int    ("log2_chroma_h", pixdesc->log2_chroma_h);
        } else {
            print_str_opt("log2_chroma_w", "N/A");
            print_str_opt("log2_chroma_h", "N/A");
        }
        n = av_get_bits_per_pixel(pixdesc);
        if (n) print_int    ("bits_per_pixel", n);
        else   print_str_opt("bits_per_pixel", "N/A");
        if (do_show_pixel_format_flags) {
            writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_FLAGS);
            PRINT_PIX_FMT_FLAG(BE,        "big_endian");
            PRINT_PIX_FMT_FLAG(PAL,       "palette");
            PRINT_PIX_FMT_FLAG(BITSTREAM, "bitstream");
            PRINT_PIX_FMT_FLAG(HWACCEL,   "hwaccel");
            PRINT_PIX_FMT_FLAG(PLANAR,    "planar");
            PRINT_PIX_FMT_FLAG(RGB,       "rgb");
            PRINT_PIX_FMT_FLAG(PSEUDOPAL, "pseudopal");
            PRINT_PIX_FMT_FLAG(ALPHA,     "alpha");
            writer_print_section_footer(w);
        }
        if (do_show_pixel_format_components && (pixdesc->nb_components > 0)) {
            writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENTS);
            for (i = 0; i < pixdesc->nb_components; i++) {
                writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENT);
                print_int("index", i + 1);
                print_int("bit_depth", pixdesc->comp[i].depth);
                writer_print_section_footer(w);
            }
            writer_print_section_footer(w);
        }
        writer_print_section_footer(w);
    }
    writer_print_section_footer(w);
}