private void DoStart()
{
var vss = Source;
if (!IsAudio)
{
vss = Tokenise(vss);
}
if (string.IsNullOrEmpty(vss))
{
ErrorHandler?.Invoke("Source not found");
_res = ReasonToFinishPlaying.VideoSourceError;
CleanUp();
_starting = false;
return;
}
AVDictionary *options = null;
if (_inputFormat == null)
{
var prefix = vss.ToLower().Substring(0, vss.IndexOf(":", StringComparison.Ordinal));
ffmpeg.av_dict_set_int(&options, "rw_timeout", _timeoutMicroSeconds, 0);
ffmpeg.av_dict_set_int(&options, "tcp_nodelay", 1, 0);
switch (prefix)
{
case "https":
case "http":
case "mmsh":
case "mms":
ffmpeg.av_dict_set_int(&options, "timeout", _timeoutMicroSeconds, 0);
ffmpeg.av_dict_set_int(&options, "stimeout", _timeoutMicroSeconds, 0);
if (!string.IsNullOrEmpty(_cookies))
{
ffmpeg.av_dict_set(&options, "cookies", _cookies, 0);
}
if (!string.IsNullOrEmpty(_headers))
{
ffmpeg.av_dict_set(&options, "headers", _headers, 0);
}
if (!string.IsNullOrEmpty(_userAgent))
{
ffmpeg.av_dict_set(&options, "user_agent", _userAgent, 0);
}
break;
case "rtsp":
case "rtmp":
ffmpeg.av_dict_set_int(&options, "stimeout", _timeoutMicroSeconds, 0);
if (!string.IsNullOrEmpty(_userAgent))
{
ffmpeg.av_dict_set(&options, "user_agent", _userAgent, 0);
}
if (!string.IsNullOrEmpty(_modeRTSP))
{
ffmpeg.av_dict_set(&options, "rtsp_transport", _modeRTSP, 0);
}
ffmpeg.av_dict_set(&options, "rtsp_flags", "prefer_tcp", 0);
break;
default:
ffmpeg.av_dict_set_int(&options, "timeout", _timeoutMicroSeconds, 0);
break;
case "tcp":
ffmpeg.av_dict_set_int(&options, "timeout", _timeoutMicroSeconds, 0);
break;
case "udp":
ffmpeg.av_dict_set_int(&options, "timeout", _timeoutMicroSeconds, 0);
break;
}
ffmpeg.av_dict_set_int(&options, "buffer_size", BUFSIZE, 0);
}
//ffmpeg.av_dict_set_int(&options, "rtbufsize", BUFSIZE, 0);
var lo = _options.Split(Environment.NewLine.ToCharArray());
foreach (var nv in lo)
{
if (!string.IsNullOrEmpty(nv))
{
var i = nv.IndexOf('=');
if (i > -1)
{
var n = nv.Substring(0, i).Trim();
var v = nv.Substring(i + 1).Trim();
if (!string.IsNullOrEmpty(n) && !string.IsNullOrEmpty(v))
{
int j;
if (int.TryParse(v, out j))
{
ffmpeg.av_dict_set_int(&options, n, j, 0);
}
else
{
ffmpeg.av_dict_set(&options, n, v, 0);
}
}
}
}
}
_abort = false;
try
{
Program.MutexHelper.Wait();
var pFormatContext = ffmpeg.avformat_alloc_context();
_lastPacket = DateTime.UtcNow;
_interruptCallback = InterruptCb;
_interruptCallbackAddress = Marshal.GetFunctionPointerForDelegate(_interruptCallback);
_aviocb = new AVIOInterruptCB_callback_func
{
Pointer = _interruptCallbackAddress
};
pFormatContext->interrupt_callback.callback = _aviocb;
pFormatContext->interrupt_callback.opaque = null;
pFormatContext->max_analyze_duration = 0; //0 = auto
var t = _timeoutMicroSeconds;
_timeoutMicroSeconds = Math.Max(_timeoutMicroSeconds, 15000000);
Throw("OPEN_INPUT", ffmpeg.avformat_open_input(&pFormatContext, vss, _inputFormat, &options));
_formatContext = pFormatContext;
SetupFormat();
_timeoutMicroSeconds = t;
}
catch (Exception ex)
{
ErrorHandler?.Invoke(ex.Message);
_res = ReasonToFinishPlaying.VideoSourceError;
CleanUp();
}
finally
{
try
{
Program.MutexHelper.Release();
}
catch
{
}
}
_starting = false;
}
private void Open(string fileName, int width, int height, AVCodecID videoCodec, int framerate, AVCodecID audioCodec, DateTime created)
{
CreatedDate = created;
Filename = fileName;
_abort = false;
_ignoreAudio = false;
if (videoCodec != AVCodecID.AV_CODEC_ID_NONE)
{
IsTimelapse = framerate != 0;
if (((width & 1) != 0) || ((height & 1) != 0))
{
throw new ArgumentException("Video file resolution must be a multiple of two.");
}
}
int i;
_lastPacket = DateTime.UtcNow;
var outputFormat = ffmpeg.av_guess_format(null, fileName, null);
if (outputFormat == null)
{
switch (videoCodec)
{
default:
case AVCodecID.AV_CODEC_ID_MPEG1VIDEO:
outputFormat = ffmpeg.av_guess_format("mpeg1video", null, null);
break;
}
}
_formatContext = ffmpeg.avformat_alloc_context();
if (_formatContext == null)
{
throw new Exception("Cannot allocate format context.");
}
_interruptCallback = InterruptCb;
_interruptCallbackAddress = Marshal.GetFunctionPointerForDelegate(_interruptCallback);
_aviocb = new AVIOInterruptCB_callback_func
{
Pointer = _interruptCallbackAddress
};
_formatContext->interrupt_callback.callback = _aviocb;
_formatContext->interrupt_callback.opaque = null;
_formatContext->oformat = outputFormat;
AVDictionary *opts = null;
if (audioCodec != AVCodecID.AV_CODEC_ID_NONE)
{
AddAudioStream(audioCodec);
OpenAudio();
}
if (videoCodec != AVCodecID.AV_CODEC_ID_NONE)
{
_width = width;
_height = height;
//_bitRate = videoBitRate;
_framerate = framerate;
_isConstantFramerate = framerate > 0;
AddVideoStream(videoCodec);
OpenVideo();
if (videoCodec == AVCodecID.AV_CODEC_ID_MPEG1VIDEO)
{
ffmpeg.av_dict_set(&opts, "pkt_size", "1316", 0);
ffmpeg.av_dict_set(&opts, "buffer_size", "65535", 0);
//ffmpeg.av_dict_set(&opts, "crf", "30", 0);
}
}
if (movflags != "")
{
ffmpeg.av_dict_set(&opts, "movflags", movflags, 0);
}
if ((outputFormat->flags & ffmpeg.AVFMT_NOFILE) != ffmpeg.AVFMT_NOFILE)
{
i = ffmpeg.avio_open2(&_formatContext->pb, fileName, ffmpeg.AVIO_FLAG_WRITE, null, &opts);
if (i < 0)
{
throw new Exception("Cannot create the video file. (" + i + ")");
}
}
i = ffmpeg.avformat_write_header(_formatContext, null);
if (i < 0)
{
throw new Exception("Cannot write header - check disk space (" + i + ")");
}
ffmpeg.av_dict_free(&opts);
_frameNumber = 0;
_keyframeInterval = DateTime.UtcNow;
_opened = true;
}
