public static MediaDecoder CreateDecoder(string codecName, Action <MediaCodec> setBeforeOpen = null, MediaDictionary opts = null)
{
MediaDecoder encode = new MediaDecoder(codecName);
encode.Initialize(setBeforeOpen, 0, opts);
return(encode);
}
/// <summary>
/// Load stream with buffersize
/// </summary>
/// <param name="stream"></param>
/// <param name="buffersize"></param>
/// <param name="iformat"></param>
/// <param name="options"></param>
public MediaReader(Stream stream, int buffersize, InFormat iformat = null, MediaDictionary options = null)
{
baseStream = stream;
bufferLength = buffersize;
buffer = new byte[bufferLength];
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((ulong)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).ThrowIfError();
}
ffmpeg.avformat_find_stream_info(pFormatContext, null).ThrowIfError();
base.Format = iformat ?? new InFormat(pFormatContext->iformat);
for (int i = 0; i < pFormatContext->nb_streams; i++)
{
AVStream * pStream = pFormatContext->streams[i];
MediaDecoder codec = MediaDecoder.CreateDecoder(pStream->codecpar->codec_id, _ =>
{
ffmpeg.avcodec_parameters_to_context(_, pStream->codecpar);
});
streams.Add(new MediaStream(pStream)
{
Codec = codec
});
}
}
/// <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)
{
fixed(AVFormatContext **ppFormatContext = &pFormatContext)
{
ffmpeg.avformat_open_input(ppFormatContext, url, iformat, options).ThrowIfError();
}
ffmpeg.avformat_find_stream_info(pFormatContext, null).ThrowIfError();
base.Format = iformat ?? new InFormat(pFormatContext->iformat);
for (int i = 0; i < pFormatContext->nb_streams; i++)
{
AVStream * pStream = pFormatContext->streams[i];
MediaDecoder codec = MediaDecoder.CreateDecoder(pStream->codecpar->codec_id, _ =>
{
ffmpeg.avcodec_parameters_to_context(_, pStream->codecpar);
});
streams.Add(new MediaStream(pStream)
{
Codec = codec
});
}
}