Function avcodec_string

libavcodec/avcodec.c:506–890

}

void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
{
    const char *codec_type;
    const char *codec_name;
    const char *profile = NULL;
    AVBPrint bprint;
    int64_t bitrate;
    int new_line = 0;
    AVRational display_aspect_ratio;
    const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
    const char *str;

    if (!buf || buf_size <= 0)
        return;
    av_bprint_init_for_buffer(&bprint, buf, buf_size);
    codec_type = av_get_media_type_string(enc->codec_type);
    codec_name = avcodec_get_name(enc->codec_id);
    profile = avcodec_profile_name(enc->codec_id, enc->profile);

    av_bprintf(&bprint, "%s: %s", codec_type ? codec_type : "unknown",
               codec_name);
    buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */

    if (enc->codec && strcmp(enc->codec->name, codec_name))
        av_bprintf(&bprint, " (%s)", enc->codec->name);

    if (profile)
        av_bprintf(&bprint, " (%s)", profile);
    if (   enc->codec_type == AVMEDIA_TYPE_VIDEO
        && av_log_get_level() >= AV_LOG_VERBOSE
        && enc->refs)
        av_bprintf(&bprint, ", %d reference frame%s",
                   enc->refs, enc->refs > 1 ? "s" : "");

    if (enc->codec_tag)
        av_bprintf(&bprint, " (%s / 0x%04X)",
                   av_fourcc2str(enc->codec_tag), enc->codec_tag);

    switch (enc->codec_type) {
    case AVMEDIA_TYPE_VIDEO:
        {
            unsigned len;

            av_bprintf(&bprint, "%s%s", separator,
                       enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
                       unknown_if_null(av_get_pix_fmt_name(enc->pix_fmt)));

            av_bprint_chars(&bprint, '(', 1);
            len = bprint.len;

            /* The following check ensures that '(' has been written
             * and therefore allows us to erase it if it turns out
             * to be unnecessary. */
            if (!av_bprint_is_complete(&bprint))
                return;

            if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
                enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth)