- /* XXX: can't we use a shared_ptr here? */
- return shared_ptr<SoundAssetWriter> (new SoundAssetWriter (this));
-}
-
-struct SoundAssetWriter::ASDCPState
-{
- ASDCP::PCM::MXFWriter mxf_writer;
- ASDCP::PCM::FrameBuffer frame_buffer;
- ASDCP::WriterInfo writer_info;
- ASDCP::PCM::AudioDescriptor audio_desc;
- ASDCP::AESEncContext* encryption_context;
-};
-
-SoundAssetWriter::SoundAssetWriter (SoundAsset* a)
- : _state (new SoundAssetWriter::ASDCPState)
- , _asset (a)
- , _finalized (false)
- , _frames_written (0)
- , _frame_buffer_offset (0)
-{
- _state->encryption_context = a->encryption_context ();
-
- /* Derived from ASDCP::Wav::SimpleWaveHeader::FillADesc */
- _state->audio_desc.EditRate = ASDCP::Rational (_asset->edit_rate(), 1);
- _state->audio_desc.AudioSamplingRate = ASDCP::Rational (_asset->sampling_rate(), 1);
- _state->audio_desc.Locked = 0;
- _state->audio_desc.ChannelCount = _asset->channels ();
- _state->audio_desc.QuantizationBits = 24;
- _state->audio_desc.BlockAlign = 3 * _asset->channels();
- _state->audio_desc.AvgBps = _asset->sampling_rate() * _state->audio_desc.BlockAlign;
- _state->audio_desc.LinkedTrackID = 0;
- _state->audio_desc.ChannelFormat = ASDCP::PCM::CF_NONE;
-
- _state->frame_buffer.Capacity (ASDCP::PCM::CalcFrameBufferSize (_state->audio_desc));
- _state->frame_buffer.Size (ASDCP::PCM::CalcFrameBufferSize (_state->audio_desc));
- memset (_state->frame_buffer.Data(), 0, _state->frame_buffer.Capacity());
-
- _asset->fill_writer_info (&_state->writer_info, _asset->uuid (), _asset->interop(), _asset->metadata());
-
- if (ASDCP_FAILURE (_state->mxf_writer.OpenWrite (_asset->path().string().c_str(), _state->writer_info, _state->audio_desc))) {
- boost::throw_exception (FileError ("could not open audio MXF for writing", _asset->path().string()));