/// <summary>
/// NOTE: ffmpeg cannot get device information through code, only print the display.
/// </summary>
/// <param name="device"></param>
/// <param name="parame"></param>
/// <param name="options">options for <see cref=" ffmpeg.avformat_open_input"/></param>
/// <returns></returns>
public static void PrintDeviceInfos(MediaFormat device, string parame, MediaDictionary options = null)
{
AVFormatContext *pFmtCtx = ffmpeg.avformat_alloc_context();
ffmpeg.av_log(null, (int)LogLevel.Verbose, $"--------------------------{Environment.NewLine}");
if (device is InFormat iformat)
{
ffmpeg.avformat_open_input(&pFmtCtx, parame, iformat, options);
}
else if (device is OutFormat oformat)
{
ffmpeg.avformat_alloc_output_context2(&pFmtCtx, oformat, null, parame);
}
ffmpeg.av_log(null, (int)LogLevel.Verbose, $"--------------------------{Environment.NewLine}");
ffmpeg.avformat_free_context(pFmtCtx);
}
public unsafe static IReadOnlyList <IReadOnlyList <MediaDevice> > GetDeviceInfos(MediaFormat device, MediaDictionary options = null)
{
string parame = "list";
AVFormatContext *pFmtCtx = ffmpeg.avformat_alloc_context();
Trace.TraceInformation("--------------------------");
if (device is InFormat iformat)
{
ffmpeg.avformat_open_input(&pFmtCtx, parame, iformat, options);
}
else if (device is OutFormat oformat)
{
ffmpeg.avformat_alloc_output_context2(&pFmtCtx, oformat, null, parame);
}
Trace.TraceInformation("--------------------------");
ffmpeg.avformat_free_context(pFmtCtx);
return(new List <List <MediaDevice> >());
}