public AudioEncoderStream(string Filename, EncoderInformation EncoderInfo) { // Initialize instance variables m_filename = Filename; m_disposed = m_fileOpen = false; m_buffer = new FifoMemoryStream(); // Open FFmpeg FFmpeg.av_register_all(); // Initialize the output format context m_avFormatCtx = FFmpeg.av_alloc_format_context(); // Get output format m_avFormatCtx.oformat = FFmpeg.guess_format(EncoderInfo.Codec.ShortName, null, null); if (m_avFormatCtx.oformat != null) throw new EncoderException("Could not find output format."); FFmpeg.av_set_parameters(ref m_avFormatCtx, null); // Initialize the new output stream AVStream* stream = FFmpeg.av_new_stream(ref m_avFormatCtx, 1); if (stream == null) throw new EncoderException("Could not alloc output audio stream"); m_avStream = *stream; // Initialize output codec context m_avCodecCtx = *m_avStream.codec; m_avCodecCtx.codec_id = EncoderInfo.Codec.CodecID; m_avCodecCtx.codec_type = CodecType.CODEC_TYPE_AUDIO; m_avCodecCtx.sample_rate = EncoderInfo.SampleRate; m_avCodecCtx.channels = EncoderInfo.Channels; m_avCodecCtx.bits_per_sample = EncoderInfo.SampleSize; m_avCodecCtx.bit_rate = EncoderInfo.Bitrate; if (EncoderInfo.VBR) { m_avCodecCtx.flags |= FFmpeg.CODEC_FLAG_QSCALE; m_avCodecCtx.global_quality = EncoderInfo.FFmpegQualityScale; } // Open codec AVCodec* outCodec = FFmpeg.avcodec_find_encoder(m_avCodecCtx.codec_id); if (outCodec == null) throw new EncoderException("Could not find encoder"); if (FFmpeg.avcodec_open(ref m_avCodecCtx, outCodec) < 0) throw new EncoderException("Could not open codec."); // Open and prep file if (FFmpeg.url_fopen(ref m_avFormatCtx.pb, m_filename, FFmpeg.URL_WRONLY) < 0) throw new EncoderException("Could not open output file."); m_fileOpen = true; FFmpeg.av_write_header(ref m_avFormatCtx); }
public AudioEncoderStream(string Filename, EncoderInformation EncoderInfo) { // Initialize instance variables m_filename = Filename; m_disposed = m_fileOpen = false; m_buffer = new FifoMemoryStream(); // Open FFmpeg FFmpeg.av_register_all(); // Initialize the output format context m_avFormatCtx = FFmpeg.av_alloc_format_context(); // Get output format m_avFormatCtx.oformat = FFmpeg.guess_format(EncoderInfo.Codec.ShortName, null, null); if (m_avFormatCtx.oformat != null) { throw new EncoderException("Could not find output format."); } FFmpeg.av_set_parameters(ref m_avFormatCtx, null); // Initialize the new output stream AVStream *stream = FFmpeg.av_new_stream(ref m_avFormatCtx, 1); if (stream == null) { throw new EncoderException("Could not alloc output audio stream"); } m_avStream = *stream; // Initialize output codec context m_avCodecCtx = *m_avStream.codec; m_avCodecCtx.codec_id = EncoderInfo.Codec.CodecID; m_avCodecCtx.codec_type = CodecType.CODEC_TYPE_AUDIO; m_avCodecCtx.sample_rate = EncoderInfo.SampleRate; m_avCodecCtx.channels = EncoderInfo.Channels; m_avCodecCtx.bits_per_sample = EncoderInfo.SampleSize; m_avCodecCtx.bit_rate = EncoderInfo.Bitrate; if (EncoderInfo.VBR) { m_avCodecCtx.flags |= FFmpeg.CODEC_FLAG_QSCALE; m_avCodecCtx.global_quality = EncoderInfo.FFmpegQualityScale; } // Open codec AVCodec *outCodec = FFmpeg.avcodec_find_encoder(m_avCodecCtx.codec_id); if (outCodec == null) { throw new EncoderException("Could not find encoder"); } if (FFmpeg.avcodec_open(ref m_avCodecCtx, outCodec) < 0) { throw new EncoderException("Could not open codec."); } // Open and prep file if (FFmpeg.url_fopen(ref m_avFormatCtx.pb, m_filename, FFmpeg.URL_WRONLY) < 0) { throw new EncoderException("Could not open output file."); } m_fileOpen = true; FFmpeg.av_write_header(ref m_avFormatCtx); }