+ if (ASDCP_FAILURE (mxf_writer.WriteFrame (frame_buffer, _encryption_context, 0))) {
+ boost::throw_exception (MiscError ("could not write audio MXF frame"));
+ }
+
+ if (_progress) {
+ (*_progress) (0.5 * float (i) / _intrinsic_duration);
+ }
+ }
+
+ bool const failed = ASDCP_FAILURE (mxf_writer.Finalize());
+
+ for (int i = 0; i < _channels; ++i) {
+ delete pcm_parser_channel[i];
+ delete frame_buffer_channel[i];
+ delete audio_desc_channel[i];
+ }
+
+ if (failed) {
+ boost::throw_exception (MiscError ("could not finalise audio MXF"));
+ }
+}
+
+string
+SoundAsset::cpl_node_name () const
+{
+ return "MainSound";
+}
+
+bool
+SoundAsset::equals (shared_ptr<const Asset> other, EqualityOptions opt, boost::function<void (NoteType, string)> note) const
+{
+ if (!MXFAsset::equals (other, opt, note)) {
+ return false;
+ }
+
+ ASDCP::PCM::MXFReader reader_A;
+ Kumu::Result_t r = reader_A.OpenRead (path().string().c_str());
+ if (ASDCP_FAILURE (r)) {
+ boost::throw_exception (MXFFileError ("could not open MXF file for reading", path().string(), r));
+ }
+
+ ASDCP::PCM::MXFReader reader_B;
+ r = reader_B.OpenRead (other->path().string().c_str());
+ if (ASDCP_FAILURE (r)) {
+ boost::throw_exception (MXFFileError ("could not open MXF file for reading", path().string(), r));
+ }
+
+ ASDCP::PCM::AudioDescriptor desc_A;
+ if (ASDCP_FAILURE (reader_A.FillAudioDescriptor (desc_A))) {
+ boost::throw_exception (DCPReadError ("could not read audio MXF information"));
+ }
+ ASDCP::PCM::AudioDescriptor desc_B;
+ if (ASDCP_FAILURE (reader_B.FillAudioDescriptor (desc_B))) {
+ boost::throw_exception (DCPReadError ("could not read audio MXF information"));
+ }
+
+ if (
+ desc_A.EditRate != desc_B.EditRate ||
+ desc_A.AudioSamplingRate != desc_B.AudioSamplingRate ||
+ desc_A.Locked != desc_B.Locked ||
+ desc_A.ChannelCount != desc_B.ChannelCount ||
+ desc_A.QuantizationBits != desc_B.QuantizationBits ||
+ desc_A.BlockAlign != desc_B.BlockAlign ||
+ desc_A.AvgBps != desc_B.AvgBps ||
+ desc_A.LinkedTrackID != desc_B.LinkedTrackID ||
+ desc_A.ContainerDuration != desc_B.ContainerDuration
+// desc_A.ChannelFormat != desc_B.ChannelFormat ||
+ ) {
+
+ note (ERROR, "audio MXF picture descriptors differ");
+ return false;
+ }
+
+ ASDCP::PCM::FrameBuffer buffer_A (1 * Kumu::Megabyte);
+ ASDCP::PCM::FrameBuffer buffer_B (1 * Kumu::Megabyte);
+
+ for (int i = 0; i < _intrinsic_duration; ++i) {
+ if (ASDCP_FAILURE (reader_A.ReadFrame (i, buffer_A))) {
+ boost::throw_exception (DCPReadError ("could not read audio frame"));
+ }
+
+ if (ASDCP_FAILURE (reader_B.ReadFrame (i, buffer_B))) {
+ boost::throw_exception (DCPReadError ("could not read audio frame"));
+ }
+
+ if (buffer_A.Size() != buffer_B.Size()) {
+ note (ERROR, "sizes of audio data for frame " + lexical_cast<string>(i) + " differ");
+ return false;
+ }
+
+ if (memcmp (buffer_A.RoData(), buffer_B.RoData(), buffer_A.Size()) != 0) {
+ for (uint32_t i = 0; i < buffer_A.Size(); ++i) {
+ int const d = abs (buffer_A.RoData()[i] - buffer_B.RoData()[i]);
+ if (d > opt.max_audio_sample_error) {
+ note (ERROR, "PCM data difference of " + lexical_cast<string> (d));
+ return false;
+ }
+ }
+ }
+ }
+
+ return true;
+}
+
+shared_ptr<const SoundFrame>
+SoundAsset::get_frame (int n) const
+{
+ /* XXX: should add on entry point here? */
+ return shared_ptr<const SoundFrame> (new SoundFrame (path().string(), n, _decryption_context));
+}
+
+shared_ptr<SoundAssetWriter>
+SoundAsset::start_write ()
+{
+ /* 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->metadata());
+
+ Kumu::Result_t r = _state->mxf_writer.OpenWrite (_asset->path().string().c_str(), _state->writer_info, _state->audio_desc);
+ if (ASDCP_FAILURE (r)) {
+ boost::throw_exception (FileError ("could not open audio MXF for writing", _asset->path().string(), r));
+ }
+}
+
+void
+SoundAssetWriter::write (float const * const * data, int frames)
+{
+ for (int i = 0; i < frames; ++i) {
+
+ byte_t* out = _state->frame_buffer.Data() + _frame_buffer_offset;
+
+ /* Write one sample per channel */
+ for (int j = 0; j < _asset->channels(); ++j) {
+ int32_t const s = data[j][i] * (1 << 23);
+ *out++ = (s & 0xff);
+ *out++ = (s & 0xff00) >> 8;
+ *out++ = (s & 0xff0000) >> 16;