private void AddVideoStream(AVCodecID codecId)
{
GetVideoCodec(codecId);
_videoStream = ffmpeg.avformat_new_stream(_formatContext, null);
if (_videoStream == null)
{
throw new Exception("Failed creating new video stream.");
}
_videoStream->time_base.num = _videoCodecContext->time_base.num;
_videoStream->time_base.den = _videoCodecContext->time_base.den;
if (_videoCodecContext->extradata_size > 0)
{
_videoStream->codecpar->extradata_size = _videoCodecContext->extradata_size;
_videoStream->codecpar->extradata = (byte *)ffmpeg.av_malloc((ulong)_videoCodecContext->extradata_size + ffmpeg.AV_INPUT_BUFFER_PADDING_SIZE);
var j = 0;
while (j++ < _videoCodecContext->extradata_size)
{
*(_videoStream->codecpar->extradata + j) = *(_videoCodecContext->extradata + j);
}
}
}
/// <summary>
/// Add stream by copy <see cref="ffmpeg.avcodec_parameters_copy(AVCodecParameters*, AVCodecParameters*)"/>,
/// </summary>
/// <param name="stream"></param>
/// <param name="flags"></param>
/// <returns></returns>
public MediaStream AddStream(MediaStream stream, int flags = 0)
{
AVStream *pstream = ffmpeg.avformat_new_stream(pFormatContext, null);
pstream->id = (int)(pFormatContext->nb_streams - 1);
ffmpeg.avcodec_parameters_copy(pstream->codecpar, stream.Stream.codecpar);
pstream->codecpar->codec_tag = 0;
MediaCodec mediaCodec = null;
if (stream.Codec != null)
{
mediaCodec = MediaEncoder.CreateEncode(stream.Codec.AVCodecContext.codec_id, flags, _ =>
{
AVCodecContext *pContext = _;
AVCodecParameters *pParameters = ffmpeg.avcodec_parameters_alloc();
ffmpeg.avcodec_parameters_from_context(pParameters, stream.Codec).ThrowIfError();
ffmpeg.avcodec_parameters_to_context(pContext, pParameters);
ffmpeg.avcodec_parameters_free(&pParameters);
pContext->time_base = stream.Stream.r_frame_rate.ToInvert();
});
}
streams.Add(new MediaStream(pstream)
{
TimeBase = stream.Stream.r_frame_rate.ToInvert(), Codec = mediaCodec
});
return(streams.Last());
}
public StreamDecoder(
AVFormatContext *formatContext,
int streamIndex,
AVCodec *codec,
AVHWDeviceType hwDeviceType = AVHWDeviceType.AV_HWDEVICE_TYPE_NONE)
: base(null)
{
_streamIndex = streamIndex;
_formatContext = formatContext;
_stream = formatContext->streams[streamIndex];
_codecContext = ffmpeg.avcodec_alloc_context3(codec);
if (hwDeviceType != AVHWDeviceType.AV_HWDEVICE_TYPE_NONE)
{
ffmpeg.av_hwdevice_ctx_create(&_codecContext->hw_device_ctx, hwDeviceType, null, null, 0)
.ThrowExceptionIfError();
}
ffmpeg.avcodec_parameters_to_context(_codecContext, _stream->codecpar)
.ThrowExceptionIfError();
ffmpeg.avcodec_open2(_codecContext, codec, null).ThrowExceptionIfError();
_codecContext->pkt_timebase = _stream->time_base;
_codec = codec;
_packet = ffmpeg.av_packet_alloc();
_frame = ffmpeg.av_frame_alloc();
_receivedFrame = ffmpeg.av_frame_alloc();
}
public FFmpegAudioStream(IAudioData audioData, AVFormatContext *formatContext, AVStream *stream) : base(audioData)
{
lock (FFmpegDecoder.SyncObject)
{
_formatContext = formatContext;
_stream = stream;
var codec = avcodec_find_decoder(_stream->codecpar->codec_id);
_codecContext = avcodec_alloc_context3(codec);
if (avcodec_parameters_to_context(_codecContext, _stream->codecpar) != 0)
{
throw new Exception(); // TODO
}
AVDictionary *dict;
av_dict_set_int(&dict, "refcounted_frames", 1, 0);
if (avcodec_open2(_codecContext, codec, &dict) != 0)
{
throw new Exception();
}
_avFrame = av_frame_alloc();
}
}
private static unsafe AVStream *add_audio_stream(AVFormatContext *oc, AVCodecID codec_id, int sample_rate = 44100)
{
AVCodecContext *c;
AVCodec * encoder = ffmpeg.avcodec_find_encoder(codec_id);
AVStream * st = ffmpeg.avformat_new_stream(oc, encoder);
if (st == null)
{
die("av_new_stream");
}
c = st->codec;
c->codec_id = codec_id;
c->codec_type = AVMediaType.AVMEDIA_TYPE_AUDIO;
/* put sample parameters */
c->bit_rate = 64000;
c->sample_rate = sample_rate;
c->channels = 2;
c->sample_fmt = encoder->sample_fmts[0];
c->channel_layout = ffmpeg.AV_CH_LAYOUT_STEREO;
// some formats want stream headers to be separate
if ((oc->oformat->flags & ffmpeg.AVFMT_GLOBALHEADER) != 0)
{
c->flags |= ffmpeg.AV_CODEC_FLAG_GLOBAL_HEADER;
}
return(st);
}
internal VideoEncoder(AVStream *stream, VideoFormat format, VideoEncoderParameters encoderParams = null) : base(stream)
{
encoderParams = encoderParams ?? VideoEncoderParameters.Default;
InFormat = format;
Init(encoderParams);
}
public MediaReader(Stream stream, InFormat iformat = null, MediaDictionary options = null)
{
baseStream = stream;
avio_Alloc_Context_Read_Packet = ReadFunc;
avio_Alloc_Context_Seek = SeekFunc;
pFormatContext = ffmpeg.avformat_alloc_context();
pFormatContext->pb = ffmpeg.avio_alloc_context((byte *)ffmpeg.av_malloc(bufferLength), bufferLength, 0, null,
avio_Alloc_Context_Read_Packet, null, avio_Alloc_Context_Seek);
fixed(AVFormatContext **ppFormatContext = &pFormatContext)
{
ffmpeg.avformat_open_input(ppFormatContext, null, iformat, options).ThrowExceptionIfError();
}
ffmpeg.avformat_find_stream_info(pFormatContext, null).ThrowExceptionIfError();
base.Format = iformat ?? new InFormat(pFormatContext->iformat);
for (int i = 0; i < pFormatContext->nb_streams; i++)
{
AVStream * pStream = pFormatContext->streams[i];
MediaDecode codec = MediaDecode.CreateDecode(pStream->codecpar->codec_id, _ =>
{
ffmpeg.avcodec_parameters_to_context(_, pStream->codecpar);
});
streams.Add(new MediaStream(pStream)
{
Codec = codec
});
}
}
public void CheckSleep(AVPacket packet, long pts, AVStream *refStream)
{
if (packet.stream_index == refStream->index)
{
if (pts > 0)
{
if (_firstTimestamp == 0)
{
_start = DateTime.UtcNow;
_firstTimestamp = pts;
}
if (!_checkSleep)
{
_clock.WaitOne(10); //don't hammer it
return;
}
var ratio = (Convert.ToDouble(refStream->time_base.num) / Convert.ToDouble(refStream->time_base.den)) * 1000;
var ptsbase = pts * ratio;
var ptsref = _firstTimestamp * ratio;
var ms = (DateTime.UtcNow - _start).TotalMilliseconds;
int msSleep = (int)Math.Max(0, ((ptsbase - ptsref) / 1) - ms);
if (msSleep > 0)
{
_clock.WaitOne(msSleep);
}
}
}
}
/// <summary>
/// Load path
/// </summary>
/// <param name="url"></param>
/// <param name="iformat"></param>
/// <param name="options"></param>
public MediaReader(string url, InFormat iformat = null, MediaDictionary options = null)
{
unsafe
{
fixed(AVFormatContext **ppFormatContext = &pFormatContext)
{
ffmpeg.avformat_open_input(ppFormatContext, url, iformat, options).ThrowExceptionIfError();
}
ffmpeg.avformat_find_stream_info(pFormatContext, null).ThrowExceptionIfError();
base.Format = iformat ?? new InFormat(pFormatContext->iformat);
for (int i = 0; i < pFormatContext->nb_streams; i++)
{
AVStream * pStream = pFormatContext->streams[i];
MediaDecode codec = MediaDecode.CreateDecode(pStream->codecpar->codec_id, _ =>
{
ffmpeg.avcodec_parameters_to_context(_, pStream->codecpar);
});
streams.Add(new MediaStream(pStream)
{
Codec = codec
});
}
}
}
public static FFmpegStream Create([NotNull] AVStream *pStream, [NotNull] FFmpegMedia media)
{
if (pStream == null)
{
throw new ArgumentNullException(nameof(pStream));
}
if (media == null)
{
throw new ArgumentNullException(nameof(media));
}
FFmpegStream result;
var pCodec = pStream->codec;
switch (pCodec->codec_type)
{
case AVMediaType.AVMEDIA_TYPE_AUDIO:
result = new AudioStream(pStream, media);
break;
case AVMediaType.AVMEDIA_TYPE_VIDEO:
result = new VideoStream(pStream, media);
break;
case AVMediaType.AVMEDIA_TYPE_SUBTITLE:
result = new SubtitleStream(pStream, media);
break;
default:
return(null);
}
return(result);
}
public unsafe void GetAVFormatContext(string out_filename)
{
AVFormatContext *ofmt_ctx = default(AVFormatContext *);
ffmpeg.avformat_alloc_output_context2(&ofmt_ctx, null, "flv", out_filename);
ffmpeg.av_interleaved_write_frame(ofmt_ctx, this._pPacket);
AVStream *pStream2 = null;
int i = 0;
while (true)
{
if (i < this._pFormatContext->nb_streams)
{
if (this._pFormatContext->streams[i]->codec->codec_type != 0)
{
i++;
continue;
}
break;
}
return;
}
pStream2 = this._pFormatContext->streams[i];
AVStream *out_stream = ffmpeg.avformat_new_stream(ofmt_ctx, pStream2->codec->codec);
}
public DecoderStream(MediaFile file, AVStream *stream)
{
// Initialize instance variables
m_disposed = false;
m_position = m_bufferUsedSize = 0;
m_file = file;
m_avStream = *stream;
m_avCodecCtx = *m_avStream.codec;
// Open the decoding codec
AVCodec *avCodec = FFmpeg.avcodec_find_decoder(m_avCodecCtx.codec_id);
if (avCodec == null)
{
throw new DecoderException("No decoder found");
}
if (FFmpeg.avcodec_open(ref m_avCodecCtx, avCodec) < 0)
{
throw new DecoderException("Error opening codec");
}
m_codecOpen = true;
}
/// <summary>
/// Called once for each audio stream
/// </summary>
internal AudioContext(AVStream *stream, FFMPEGDecoder source, AudioFormat resampleTarget) : base(stream, source)
{
_resampleTarget = resampleTarget;
BufferCapacity = resampleTarget.SampleRate * resampleTarget.Channels * 4;
_circBuf = new CircularBuffer(BufferCapacity);
CreateAudio();
}
public MediaStream(AVFormatContext *formatContext, int streamIndex, AVStream *rawStream, AVCodec *decodeCodec = null)
{
RawFormatContext = formatContext;
StreamIndex = streamIndex;
RawStream = rawStream;
_cachedRawDecodeCodec = decodeCodec;
}
/// <summary>
/// Initializes a new instance of the <see cref="StreamInfo"/> class.
/// </summary>
/// <param name="stream">A generic stream.</param>
/// <param name="container">The input container.</param>
internal unsafe StreamInfo(AVStream *stream, InputContainer container)
{
var codec = stream->codec;
Metadata = new ReadOnlyDictionary <string, string>(FFDictionary.ToDictionary(stream->metadata));
CodecName = ffmpeg.avcodec_get_name(codec->codec_id);
CodecId = codec->codec_id.FormatEnum(12);
Index = stream->index;
IsInterlaced = codec->field_order != AVFieldOrder.AV_FIELD_PROGRESSIVE &&
codec->field_order != AVFieldOrder.AV_FIELD_UNKNOWN;
TimeBase = stream->time_base;
Duration = stream->duration >= 0
? stream->duration.ToTimeSpan(stream->time_base)
: TimeSpan.FromTicks(container.Pointer->duration * 10);
var start = stream->start_time.ToTimeSpan(stream->time_base);
StartTime = start == TimeSpan.MinValue ? TimeSpan.Zero : start;
if (stream->nb_frames > 0)
{
IsFrameCountProvidedByContainer = true;
FrameCount = (int)stream->nb_frames;
}
else
{
FrameCount = Duration.ToFrameNumber(stream->avg_frame_rate);
}
}
internal StreamContext(AVStream *stream, FFMPEGDecoder source)
{
_stream = stream;
_source = source;
var origCtx = _stream->codec;
//find the corresponding codec
_codec = ffmpeg.avcodec_find_decoder(origCtx->codec_id);
if (_codec == null)
{
throw new NotSupportedException("This " + ffmpeg.av_get_media_type_string(origCtx->codec_type) +
" codec is not supported by the current ffmpeg binaries!");
}
//copy the context from ffmpeg (required because we don't own the other one)
_codecCtx = ffmpeg.avcodec_alloc_context3(_codec);
if (ffmpeg.avcodec_parameters_to_context(_codecCtx, _stream->codecpar) != 0)
{
throw new Exception("Couldn't copy stream parameters!");
}
if (ffmpeg.avcodec_open2(_codecCtx, _codec, null) != 0)
{
throw new Exception("Couldn't copy the codec!");
}
_decoded = ffmpeg.av_frame_alloc();
}
public AudioStreamDecoder(string url, AVHWDeviceType HWDeviceType = AVHWDeviceType.AV_HWDEVICE_TYPE_NONE)
{
_pFormatContext = ffmpeg.avformat_alloc_context();
_receivedFrame = ffmpeg.av_frame_alloc();
var pFormatContext = _pFormatContext;
ffmpeg.avformat_open_input(&pFormatContext, url, null, null).ThrowExceptionIfError();
ffmpeg.avformat_find_stream_info(_pFormatContext, null).ThrowExceptionIfError();
AVCodec *videoCodec = null;
_streamVideoIndex = ffmpeg.av_find_best_stream(_pFormatContext, AVMediaType.AVMEDIA_TYPE_VIDEO, -1, -1, &videoCodec, 0).ThrowExceptionIfError();
_pVideoCodecContext = ffmpeg.avcodec_alloc_context3(videoCodec);
if (HWDeviceType != AVHWDeviceType.AV_HWDEVICE_TYPE_NONE)
{
ffmpeg.av_hwdevice_ctx_create(&_pVideoCodecContext->hw_device_ctx, HWDeviceType, null, null, 0).ThrowExceptionIfError();
}
ffmpeg.avcodec_parameters_to_context(_pVideoCodecContext, _pFormatContext->streams[_streamVideoIndex]->codecpar).ThrowExceptionIfError();
if (_pFormatContext->streams[_streamVideoIndex]->avg_frame_rate.den != 0)
{
Fps = _pFormatContext->streams[_streamVideoIndex]->avg_frame_rate.num / _pFormatContext->streams[_streamVideoIndex]->avg_frame_rate.den;
Console.WriteLine("计算得到FPS");
}
else
{
Console.WriteLine("默认FPS");
Fps = 25;
}
ffmpeg.avcodec_open2(_pVideoCodecContext, videoCodec, null).ThrowExceptionIfError();
CodecName = ffmpeg.avcodec_get_name(videoCodec->id);
FrameSize = new Size(_pVideoCodecContext->width, _pVideoCodecContext->height);
PixelFormat = _pVideoCodecContext->pix_fmt;
_pPacket = ffmpeg.av_packet_alloc();
_pFrame = ffmpeg.av_frame_alloc();
AVCodec *audioCodec = null;
_streamAudioIndex = ffmpeg.av_find_best_stream(_pFormatContext, AVMediaType.AVMEDIA_TYPE_AUDIO, -1, -1, &audioCodec, 0).ThrowExceptionIfError();
_pAudioCodecContext = ffmpeg.avcodec_alloc_context3(audioCodec);
ffmpeg.avcodec_parameters_to_context(_pAudioCodecContext, _pFormatContext->streams[_streamAudioIndex]->codecpar).ThrowExceptionIfError();
ffmpeg.avcodec_open2(_pAudioCodecContext, audioCodec, null).ThrowExceptionIfError();
if (_streamAudioIndex > 0)
{
AVStream *avs = _pFormatContext->streams[_streamAudioIndex];
Console.WriteLine($"codec_id:{avs->codecpar->codec_id}");
Console.WriteLine($"format:{avs->codecpar->format}");
Console.WriteLine($"sample_rate:{avs->codecpar->sample_rate}");
Console.WriteLine($"channels:{avs->codecpar->channels}");
Console.WriteLine($"frame_size:{avs->codecpar->frame_size}");
in_sample_fmt = _pAudioCodecContext->sample_fmt;
in_sample_rate = _pAudioCodecContext->sample_rate; //输入的采样率
in_ch_layout = _pAudioCodecContext->channel_layout; //输入的声道布局
in_channels = _pAudioCodecContext->channels;
in_start_time = avs->start_time;
}
}
private MediaStream(AVStream *ptr)
{
if (ptr == null)
{
throw new ArgumentNullException(nameof(ptr));
}
_ptr = ptr;
}
public AudioStream([NotNull] AVStream *pStream, [NotNull] FFmpegMedia media)
: base(pStream, media)
{
var pCodec = pStream->codec;
ChannelCount = pCodec->channels;
SampleRate = pCodec->sample_rate;
}
/// <summary>
/// Initializes a new instance of the <see cref="InputStream{TFrame}"/> class.
/// </summary>
/// <param name="stream">The multimedia stream.</param>
/// <param name="owner">The container that owns the stream.</param>
public InputStream(AVStream *stream, InputContainer owner)
: base(stream)
{
OwnerFile = owner;
Type = typeof(TFrame) == typeof(VideoFrame) ? MediaType.Video : MediaType.None;
Info = new StreamInfo(stream, owner);
}
public StreamDecoder(string url, DecoderConfiguration configuration)
{
FFmpegBinariesHelper.RegisterFFmpegBinaries(); //Should not be here
this.decoderConfiguration = configuration;
_pFormatContext = ffmpeg.avformat_alloc_context();
var pFormatContext = _pFormatContext;
ffmpeg.avformat_open_input(&pFormatContext, url, null, null).ThrowExceptionIfError();
ffmpeg.avformat_find_stream_info(_pFormatContext, null).ThrowExceptionIfError();
// find the first video stream
AVStream *pStream = null;
for (var i = 0; i < _pFormatContext->nb_streams; i++)
{
if (_pFormatContext->streams[i]->codec->codec_type == AVMediaType.AVMEDIA_TYPE_VIDEO)
{
pStream = _pFormatContext->streams[i];
break;
}
}
if (pStream == null)
{
throw new InvalidOperationException("Could not found video stream.");
}
_streamIndex = pStream->index;
_pCodecContext = pStream->codec;
var codecId = _pCodecContext->codec_id;
var pCodec = ffmpeg.avcodec_find_decoder(codecId);
if (pCodec == null)
{
throw new InvalidOperationException("Unsupported codec.");
}
ffmpeg.avcodec_open2(_pCodecContext, pCodec, null).ThrowExceptionIfError();
decoderConfiguration.codec = FormatHelper.FFmpegToOT2(codecId);
decoderConfiguration.inputResolution = new Resolution(_pCodecContext->height, _pCodecContext->width);
//CodecName = ffmpeg.avcodec_get_name(codecId);
//PixelFormat = _pCodecContext->pix_fmt;
decoderConfiguration.inputPixelFormat = FormatHelper.FFmpegToOT2(_pCodecContext->pix_fmt);
_pPacket = ffmpeg.av_packet_alloc();
_pFrame = ffmpeg.av_frame_alloc();
decodingThread = new Thread(() => { while (DecodeFrame() == 0)
{
;
}
});
}
public VideoStreamDecoder(string device)
{
_pFormatContext = ffmpeg.avformat_alloc_context();
var pFormatContext = _pFormatContext;
//ffmpeg.av_register_all();
ffmpeg.avdevice_register_all();
//webcam
AVInputFormat *iformat = ffmpeg.av_find_input_format("dshow");
ffmpeg.avformat_open_input(&pFormatContext, device, iformat, null).ThrowExceptionIfError();
//미디어 파일 열기 url주소 또는 파일 이름 필요
//ffmpeg.avformat_open_input(&pFormatContext, url, null, null).ThrowExceptionIfError();
////미디어 정보 가져옴, blocking 함수라서 network protocol으로 가져올 시, 블락될수도 있슴
ffmpeg.avformat_find_stream_info(_pFormatContext, null).ThrowExceptionIfError();
// find the first video stream
AVStream *pStream = null;
for (var i = 0; i < _pFormatContext->nb_streams; i++)
{
if (_pFormatContext->streams[i]->codec->codec_type == AVMediaType.AVMEDIA_TYPE_VIDEO)
{
pStream = _pFormatContext->streams[i];
break;
}
}
if (pStream == null)
{
throw new InvalidOperationException("Could not found video stream.");
}
_streamIndex = pStream->index;
_pCodecContext = pStream->codec;
var codecId = _pCodecContext->codec_id;
var pCodec = ffmpeg.avcodec_find_decoder(codecId); //H264
if (pCodec == null)
{
throw new InvalidOperationException("Unsupported codec.");
}
//open codec
ffmpeg.avcodec_open2(_pCodecContext, pCodec, null).ThrowExceptionIfError();
CodecName = ffmpeg.avcodec_get_name(codecId);
FrameSize = new System.Windows.Size(_pCodecContext->width, _pCodecContext->height); // 640 480
PixelFormat = _pCodecContext->pix_fmt;
_pPacket = ffmpeg.av_packet_alloc();
_pFrame = ffmpeg.av_frame_alloc();
}
public void Start()
{
var OutFmt = av_guess_format(null, Filename, null);
if (OutFmt == null)
{
throw new Exception("Couldn't find output format");
}
AVFormatContext *ctx = null;
avformat_alloc_output_context2(&ctx, OutFmt, null, null).AssertNotNeg();
OutCtx = ctx != null ? ctx : throw new Exception("Couldn't allocate output context");
if (Vid != null)
{
VStream = avformat_new_stream(OutCtx, avcodec_find_encoder(AVCodecID.AV_CODEC_ID_H264));
if (VStream == null)
{
throw new Exception("Couldn't allocate video stream");
}
VStream->codecpar->codec_id = AVCodecID.AV_CODEC_ID_H264;
VStream->codecpar->codec_type = AVMediaType.AVMEDIA_TYPE_VIDEO;
VStream->codecpar->width = StreamInfo.VideoWidth;
VStream->codecpar->height = StreamInfo.VideoHeight;
VStream->codecpar->format = (int)AVPixelFormat.AV_PIX_FMT_YUV420P;
}
if (Aud != null)
{
AStream = avformat_new_stream(OutCtx, avcodec_find_encoder(AVCodecID.AV_CODEC_ID_MP3));
if (AStream == null)
{
throw new Exception("Couldn't allocate audio stream");
}
AStream->id = Vid == null ? 0 : 1;
AStream->codecpar->codec_id = AVCodecID.AV_CODEC_ID_MP3;
AStream->codecpar->codec_type = AVMediaType.AVMEDIA_TYPE_AUDIO;
AStream->codecpar->sample_rate = StreamInfo.AudioSampleRate;
AStream->codecpar->channels = StreamInfo.AudioChannels;
AStream->codecpar->format = (int)AVSampleFormat.AV_SAMPLE_FMT_FLTP;
AStream->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
AStream->codecpar->frame_size = StreamInfo.AudioSamplesPerPayload;
AStream->codecpar->bit_rate = 128000;
}
avio_open(&OutCtx->pb, Filename, AVIO_FLAG_WRITE).Assert();
avformat_write_header(OutCtx, null).Assert();
Vid?.UseContext(OutCtx);
Aud?.UseContext(OutCtx, AStream->id);
Console.WriteLine("Starting to stream. Press enter to quit, if you close SysDVR-Client via the X button the output video may become corrupted");
Running = true;
}
public AVStream* this[int idx]
{
get
{
switch (idx)
{
case 0: return stream_ptrs1;
case 1: return stream_ptrs2;
case 2: return stream_ptrs3;
case 3: return stream_ptrs4;
case 4: return stream_ptrs5;
case 5: return stream_ptrs6;
case 6: return stream_ptrs7;
case 7: return stream_ptrs8;
case 8: return stream_ptrs9;
case 9: return stream_ptrs10;
case 10: return stream_ptrs11;
case 11: return stream_ptrs12;
case 12: return stream_ptrs13;
case 13: return stream_ptrs14;
case 14: return stream_ptrs15;
case 15: return stream_ptrs16;
case 16: return stream_ptrs17;
case 17: return stream_ptrs18;
case 18: return stream_ptrs19;
case 19: return stream_ptrs20;
default: throw new ArgumentOutOfRangeException();
}
}
set
{
switch (idx)
{
case 0: stream_ptrs1 = value; break;
case 1: stream_ptrs2 = value; break;
case 2: stream_ptrs3 = value; break;
case 3: stream_ptrs4 = value; break;
case 4: stream_ptrs5 = value; break;
case 5: stream_ptrs6 = value; break;
case 6: stream_ptrs7 = value; break;
case 7: stream_ptrs8 = value; break;
case 8: stream_ptrs9 = value; break;
case 9: stream_ptrs10 = value; break;
case 10: stream_ptrs11 = value; break;
case 11: stream_ptrs12 = value; break;
case 12: stream_ptrs13 = value; break;
case 13: stream_ptrs14 = value; break;
case 14: stream_ptrs15 = value; break;
case 15: stream_ptrs16 = value; break;
case 16: stream_ptrs17 = value; break;
case 17: stream_ptrs18 = value; break;
case 18: stream_ptrs19 = value; break;
case 19: stream_ptrs20 = value; break;
default: throw new ArgumentOutOfRangeException();
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="InputStream{TFrame}"/> class.
/// </summary>
/// <param name="stream">The multimedia stream.</param>
/// <param name="owner">The container that owns the stream.</param>
public InputStream(AVStream *stream, InputContainer owner)
: base(stream)
{
OwnerFile = owner;
PacketQueue = new ObservableQueue <MediaPacket>();
Type = typeof(TFrame) == typeof(VideoFrame) ? MediaType.Video : MediaType.None;
Info = new StreamInfo(stream, owner);
}
public H264Encoder(string outputPath, Size frameSize)
{
ffmpeg.RootPath = Path.Join(TestData.SolutionDir, "ffmpeg", "bin");
Console.WriteLine("FFMPEG version: " + ffmpeg.av_version_info());
_frameSize = frameSize;
var codecId = AVCodecID.AV_CODEC_ID_H264;
_pCodec = ffmpeg.avcodec_find_encoder(codecId);
if (_pCodec == null)
{
throw new InvalidOperationException("Codec not found.");
}
_pCodecContext = ffmpeg.avcodec_alloc_context3(_pCodec);
_pCodecContext->width = frameSize.Width;
_pCodecContext->height = frameSize.Height;
_pCodecContext->time_base = new AVRational {
num = 1, den = 1000
};
_pCodecContext->pix_fmt = AVPixelFormat.AV_PIX_FMT_YUV420P;
ffmpeg.av_opt_set(_pCodecContext->priv_data, "preset", "superfast", 0);
ffmpeg.avcodec_open2(_pCodecContext, _pCodec, null).ThrowExceptionIfError();
_linesizeY = frameSize.Width;
_linesizeU = frameSize.Width / 2;
_linesizeV = frameSize.Width / 2;
_ySize = _linesizeY * frameSize.Height;
_uSize = _linesizeU * frameSize.Height / 2;
_swsContext = null;
// Allocate a frame
_frame = ffmpeg.av_frame_alloc();
_frame->width = _pCodecContext->width;
_frame->height = _pCodecContext->height;
_frame->format = (int)_pCodecContext->pix_fmt;
ffmpeg.av_frame_get_buffer(_frame, 32);
// Create output context for mp4
AVFormatContext *outputContext;
ffmpeg.avformat_alloc_output_context2(&outputContext, null, "mp4", null).ThrowExceptionIfError();
_outputContext = outputContext;
ffmpeg.avio_open2(&_outputContext->pb, outputPath, ffmpeg.AVIO_FLAG_WRITE, null, null);
// Create video stream in mp4 container
_stream = ffmpeg.avformat_new_stream(_outputContext, _pCodec);
ffmpeg.avcodec_parameters_from_context(_stream->codecpar, _pCodecContext)
.ThrowExceptionIfError();
_stream->sample_aspect_ratio = _pCodecContext->sample_aspect_ratio;
_stream->time_base = _pCodecContext->time_base;
ffmpeg.avformat_write_header(_outputContext, null);
}
protected Decoder(AVStream *stream) : base(stream)
{
codecContext->Codec = FF.avcodec_find_decoder(codecContext->CodecId);
int resultCode = FF.avcodec_open2(codecContext, codecContext->Codec, null);
if (resultCode != 0)
{
throw new FFmpegException(resultCode);
}
}
internal static Decoder Create(AVStream *stream)
{
switch (stream->Codec->CodecType)
{
case AVMediaType.Audio: return(new AudioDecoder(stream));
case AVMediaType.Video: return(new VideoDecoder(stream));
}
return(null);
}
internal AudioEncoder(AVStream *stream, AudioFormat inFormat, BitRate bitRate) : base(stream)
{
try {
InFormat = inFormat;
Init(codecContext->CodecId, bitRate);
} catch {
Dispose();
throw;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="InputStream{TFrame}"/> class.
/// </summary>
/// <param name="stream">The multimedia stream.</param>
/// <param name="owner">The container that owns the stream.</param>
public InputStream(AVStream *stream, InputContainer owner)
: base(stream)
{
OwnerFile = owner;
packetQueue = new ConcurrentQueue <MediaPacket>();
Type = typeof(TFrame) == typeof(VideoFrame) ? MediaType.Video : MediaType.None;
Info = new StreamInfo(stream, owner);
decodedFrame = new TFrame();
}
/// <summary>
/// Initializes a new instance of the <see cref="VideoStreamInfo"/> class.
/// </summary>
/// <param name="stream">A generic stream.</param>
/// <param name="container">The input container.</param>
internal unsafe VideoStreamInfo(AVStream *stream, InputContainer container)
: base(stream, MediaType.Video, container)
{
var codec = stream->codec;
IsInterlaced = codec->field_order != AVFieldOrder.AV_FIELD_PROGRESSIVE &&
codec->field_order != AVFieldOrder.AV_FIELD_UNKNOWN;
FrameSize = new Size(codec->width, codec->height);
PixelFormat = codec->pix_fmt.FormatEnum(11);
AVPixelFormat = codec->pix_fmt;
}
internal MediaStream (IntPtr ptr)
{
if (ptr == IntPtr.Zero)
throw new ArgumentException ("Null pointer");
this.ptr = ptr;
this.stream = (AVStream*)ptr;
Language = Marshal.PtrToStringAnsi (new IntPtr (this.stream->language));
CodecContext = new CodecContext ((IntPtr)this.stream->codec);
}
/// <summary>
/// Initializes the internal transcoder -- This create the input, processing, and output blocks that make
/// up the video and audio decoding stream.
/// </summary>
/// <param name="filePath">The file path.</param>
/// <param name="inputFormatName">Name of the input format. Leave null or empty to detect automatically</param>
/// <param name="referer">The referer. Leave null or empty to skip setting it</param>
/// <param name="userAgent">The user agent. Leave null or empty to skip setting it.</param>
/// <exception cref="FileFormatException"></exception>
/// <exception cref="Exception">Could not find stream info
/// or
/// Media must contain at least a video or and audio stream</exception>
/// <exception cref="System.Exception">Could not open file
/// or
/// Could not find stream info
/// or
/// Media must contain a video stream
/// or
/// Media must contain an audio stream
/// or
/// Unsupported codec
/// or
/// Could not initialize the output conversion context
/// or
/// Could not create output codec context from input
/// or
/// Could not open codec</exception>
private void InitializeMedia(string filePath, string inputFormatName, string referer, string userAgent)
{
// Create the input format context by opening the file
InputFormatContext = ffmpeg.avformat_alloc_context();
AVDictionary* optionsDict = null;
if (string.IsNullOrWhiteSpace(userAgent) == false)
ffmpeg.av_dict_set(&optionsDict, "user-agent", userAgent, 0);
if (string.IsNullOrWhiteSpace(referer) == false)
ffmpeg.av_dict_set(&optionsDict, "headers", $"Referer:{referer}", 0);
ffmpeg.av_dict_set_int(&optionsDict, "usetoc", 1, 0);
{ // for m3u8 (HLS) streaming
// TODO: maybe detect here if it is streaming? I need to test if this negatively affects filesystem files or network files as opposed to RTSP streams and HLS streams
ffmpeg.av_dict_set_int(&optionsDict, "multiple_requests", 1, 0);
ffmpeg.av_dict_set_int(&optionsDict, "reconnect", 1, 0);
ffmpeg.av_dict_set_int(&optionsDict, "reconnect_at_eof", 1, 0);
ffmpeg.av_dict_set_int(&optionsDict, "reconnect_streamed", 1, 0);
ffmpeg.av_dict_set_int(&optionsDict, "reconnect_delay_max", (int)Constants.WaitForPlaybackReadyStateTimeout.TotalMilliseconds, 0);
}
AVInputFormat* inputFormat = null;
if (string.IsNullOrWhiteSpace(inputFormatName) == false)
inputFormat = ffmpeg.av_find_input_format(inputFormatName);
fixed (AVFormatContext** inputFormatContextRef = &InputFormatContext)
{
if (ffmpeg.avformat_open_input(inputFormatContextRef, filePath, inputFormat, &optionsDict) != 0)
throw new FileFormatException(string.Format("Could not open stream or file '{0}'", filePath));
}
InputFormatContext->iformat->flags |= ffmpeg.AVFMT_FLAG_NOBUFFER;
InputFormatContext->iformat->flags |= ffmpeg.AVFMT_FLAG_NOFILLIN;
ffmpeg.av_dict_free(&optionsDict);
// Extract the stream info headers from the file
if (ffmpeg.avformat_find_stream_info(InputFormatContext, null) != 0)
throw new Exception("Could not find stream info");
// search for the audio and video streams
for (int i = 0; i < InputFormatContext->nb_streams; i++)
{
var codecType = InputFormatContext->streams[i]->codec->codec_type;
if (codecType == AVMediaType.AVMEDIA_TYPE_VIDEO && InputVideoStream == null)
{
InputVideoStream = InputFormatContext->streams[i];
continue;
}
if (codecType == AVMediaType.AVMEDIA_TYPE_AUDIO && InputAudioStream == null)
{
InputAudioStream = InputFormatContext->streams[i];
continue;
}
}
if (InputVideoStream != null)
{
this.InitializeVideo();
this.HasVideo = VideoBitrate > 0 || VideoFrameRate > 0M || VideoFrameWidth > 0 || VideoFrameHeight > 0;
}
if (InputAudioStream != null)
{
this.InitializeAudio();
this.HasAudio = AudioBytesPerSample > 0;
}
if (HasAudio == false && HasVideo == false)
{
throw new Exception("Media must contain at least a video or and audio stream");
}
else
{
// General Properties here
NaturalDuration = Convert.ToDecimal(Convert.ToDouble(InputFormatContext->duration) / Convert.ToDouble(ffmpeg.AV_TIME_BASE));
IsLiveStream = Helper.IsNoPtsValue(InputFormatContext->duration);
StartTime = Convert.ToDecimal(Convert.ToDouble(InputFormatContext->start_time) / Convert.ToDouble(ffmpeg.AV_TIME_BASE));
EndTime = StartTime + NaturalDuration;
RealtimeClock.Seek(StartTime);
}
}
public void Close()
{
if (!_opened)
return;
FFmpegInvoke.av_free(_pConvertedFrame);
FFmpegInvoke.av_free(_pConvertedFrameBuffer);
FFmpegInvoke.sws_freeContext(_pConvertContext);
FFmpegInvoke.av_free(_pDecodedFrame);
FFmpegInvoke.avcodec_close(_pStream->codec);
fixed (AVFormatContext** pFormatContext = &_pFormatContext)
{
FFmpegInvoke.avformat_close_input(pFormatContext);
}
_videoClock = 0;
_pFormatContext = null;
_pStream = null;
_pDecodedFrame = null;
_pConvertedFrame = null;
_pConvertedFrameBuffer = null;
_pConvertContext = null;
_opened = false;
}
public void Open(string FileName)
{
DecoderConfig.Init();
AVFormatContext* pFormatContext = FFmpegInvoke.avformat_alloc_context();
_pFormatContext = pFormatContext;
if (FFmpegInvoke.avformat_open_input(&pFormatContext, FileName, null, null) != 0)
throw new Exception("Could not open file");
if (FFmpegInvoke.avformat_find_stream_info(pFormatContext, null) != 0)
throw new Exception("Could not find stream info");
for (int i = 0; i < pFormatContext->nb_streams; i++)
{
if (pFormatContext->streams[i]->codec->codec_type == AVMediaType.AVMEDIA_TYPE_VIDEO)
{
_pStream = pFormatContext->streams[i];
break;
}
}
if (_pStream == null)
throw new Exception("Could not found video stream");
AVCodecContext codecContext = *(_pStream->codec);
codecContext.workaround_bugs = FFmpegInvoke.FF_BUG_AUTODETECT;
_frameduration = 1 / q2d(_pStream->r_frame_rate);
FrameCount = _pStream->nb_frames;
Duration = (float)pFormatContext->duration / FFmpegInvoke.AV_TIME_BASE;
Width = codecContext.width;
Height = codecContext.height;
AVPixelFormat sourcePixFmt = codecContext.pix_fmt;
AVCodecID codecId = codecContext.codec_id;
var convertToPixFmt = AVPixelFormat.AV_PIX_FMT_RGB24;
_pConvertContext = FFmpegInvoke.sws_getContext(Width, Height, sourcePixFmt,
Width, Height, convertToPixFmt,
FFmpegInvoke.SWS_FAST_BILINEAR, null, null, null);
if (_pConvertContext == null)
throw new Exception("Could not initialize the conversion context");
_pConvertedFrame = (AVPicture*)FFmpegInvoke.avcodec_alloc_frame();
int convertedFrameBufferSize = FFmpegInvoke.avpicture_get_size(convertToPixFmt, Width, Height);
_pConvertedFrameBuffer = (byte*)FFmpegInvoke.av_malloc((uint)convertedFrameBufferSize);
FFmpegInvoke.avpicture_fill(_pConvertedFrame, _pConvertedFrameBuffer, convertToPixFmt, Width, Height);
AVCodec* pCodec = FFmpegInvoke.avcodec_find_decoder(codecId);
if (pCodec == null)
throw new Exception("Unsupported codec");
if (FFmpegInvoke.avcodec_open2(_pStream->codec, pCodec, null) < 0)
throw new Exception("Could not open codec");
_pDecodedFrame = FFmpegInvoke.avcodec_alloc_frame();
_packet = new AVPacket();
fixed (AVPacket* pPacket = &_packet)
{
FFmpegInvoke.av_init_packet(pPacket);
}
_opened = true;
}
