gistfile1.txt

void ffmpeg_av_log_callback(void* ptr, int level, const char* fmt, va_list vl_arg) {
    if (level > av_log_get_level())
        return;
    static char const*  tag = "AMP_FFMPEG_CALLBACK";
    static std::mutex log_mutex;
    static int print_prefix = 1;
    static int LINE_SZ = 1024;
    char line[LINE_SZ];
    va_list vl;
    std::lock_guard<std::mutex> guard(log_mutex);
    va_copy(vl, vl_arg);
    av_log_format_line(ptr, level, fmt, vl, line, LINE_SZ, &print_prefix);
    va_end(vl);
    switch(level) {
        case AV_LOG_PANIC:
            LOG(ANDROID_LOG_FATAL, tag, "%s", line);
            break;
        case AV_LOG_ERROR:
            LOG(ANDROID_LOG_ERROR, tag, "%s", line);
            break;
        case AV_LOG_WARNING:
            LOG(ANDROID_LOG_WARN, tag, "%s", line);
            break;
        case AV_LOG_INFO:
            LOG(ANDROID_LOG_INFO, tag, "%s", line);
            break;
        case AV_LOG_VERBOSE: // libav's verbose is not particularly verbose
        case AV_LOG_DEBUG:
            LOG(ANDROID_LOG_DEBUG, tag, "%s", line);
            break;
        case AV_LOG_TRACE:
            LOG(ANDROID_LOG_VERBOSE, tag, "%s", line);
            break;
        default:
            LOG(ANDROID_LOG_DEFAULT, tag, "%s", line);
    }
}