-
- ASDCP::PCM::AudioDescriptor audio_desc;
- pcm_parser_channel[0].FillAudioDescriptor (audio_desc);
- audio_desc.ChannelCount = 0;
- audio_desc.BlockAlign = 0;
- audio_desc.EditRate = asdcp_fps;
- audio_desc.AvgBps = audio_desc.AvgBps * _channels;
-
- Channel channels[] = {
- LEFT,
- RIGHT,
- CENTRE,
- LFE,
- LS,
- RS,
- /* XXX: not quite sure what these should be yet */
- CHANNEL_7,
- CHANNEL_8
- };
-
- assert (int(_channels) <= int(sizeof(channels) / sizeof(Channel)));
-
- ASDCP::PCM::FrameBuffer frame_buffer_channel[_channels];
- ASDCP::PCM::AudioDescriptor audio_desc_channel[_channels];
-
- for (int i = 0; i < _channels; ++i) {
-
- string const path = get_path (channels[i]);
-
- if (ASDCP_FAILURE (pcm_parser_channel[i].OpenRead (path.c_str(), asdcp_fps))) {
- throw FileError ("could not open WAV file for reading", path);
- }
-
- pcm_parser_channel[i].FillAudioDescriptor (audio_desc_channel[i]);
- frame_buffer_channel[i].Capacity (ASDCP::PCM::CalcFrameBufferSize (audio_desc_channel[i]));
-
- audio_desc.ChannelCount += audio_desc_channel[i].ChannelCount;
- audio_desc.BlockAlign += audio_desc_channel[i].BlockAlign;
- }
-
- ASDCP::PCM::FrameBuffer frame_buffer;
- frame_buffer.Capacity (ASDCP::PCM::CalcFrameBufferSize (audio_desc));
- frame_buffer.Size (ASDCP::PCM::CalcFrameBufferSize (audio_desc));
-
- ASDCP::WriterInfo writer_info;
- fill_writer_info (&writer_info);
-
- ASDCP::PCM::MXFWriter mxf_writer;
- if (ASDCP_FAILURE (mxf_writer.OpenWrite (path().string().c_str(), writer_info, audio_desc))) {
- throw FileError ("could not open audio MXF for writing", path().string());
- }
-
- for (int i = 0; i < _length; ++i) {
-
- for (int j = 0; j < _channels; ++j) {
- memset (frame_buffer_channel[j].Data(), 0, frame_buffer_channel[j].Capacity());
- if (ASDCP_FAILURE (pcm_parser_channel[j].ReadFrame (frame_buffer_channel[j]))) {
- throw MiscError ("could not read audio frame");
- }
- }
-
- byte_t *data_s = frame_buffer.Data();
- byte_t *data_e = data_s + frame_buffer.Capacity();
- byte_t sample_size = ASDCP::PCM::CalcSampleSize (audio_desc_channel[0]);
- int offset = 0;
-
- while (data_s < data_e) {
- for (int j = 0; j < _channels; ++j) {
- byte_t* frame = frame_buffer_channel[j].Data() + offset;
- memcpy (data_s, frame, sample_size);
- data_s += sample_size;
- }
- offset += sample_size;
- }
-
- if (ASDCP_FAILURE (mxf_writer.WriteFrame (frame_buffer, 0, 0))) {
- throw MiscError ("could not write audio MXF frame");
- }