/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
*/
+/** @file src/sound_asset.cc
+ * @brief An asset made up of WAV files
+ */
+
#include <iostream>
#include <stdexcept>
#include <boost/filesystem.hpp>
-#include <AS_DCP.h>
+#include <boost/lexical_cast.hpp>
+#include <libxml++/nodes/element.h>
+#include "KM_fileio.h"
+#include "AS_DCP.h"
#include "sound_asset.h"
#include "util.h"
+#include "exceptions.h"
+#include "sound_frame.h"
-using namespace std;
-using namespace boost;
+using std::string;
+using std::stringstream;
+using std::ostream;
+using std::vector;
+using std::list;
+using boost::shared_ptr;
+using boost::lexical_cast;
using namespace libdcp;
-SoundAsset::SoundAsset (list<string> const & files, string p, int fps, int len)
- : Asset (p, fps, len)
+SoundAsset::SoundAsset (boost::filesystem::path directory, boost::filesystem::path mxf_name)
+ : MXFAsset (directory, mxf_name)
+ , _channels (0)
+ , _sampling_rate (0)
{
- ASDCP::Rational asdcp_fps (_fps, 1);
-
- ASDCP::PCM::WAVParser pcm_parser_channel[files.size()];
- if (pcm_parser_channel[0].OpenRead (files.front().c_str(), asdcp_fps)) {
- throw runtime_error ("could not open WAV file for reading");
+
+}
+
+void
+SoundAsset::create (vector<boost::filesystem::path> const & files)
+{
+ create (boost::bind (&SoundAsset::path_from_channel, this, _1, files));
+}
+
+void
+SoundAsset::read ()
+{
+ ASDCP::PCM::MXFReader reader;
+ Kumu::Result_t r = reader.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::AudioDescriptor desc;
+ if (ASDCP_FAILURE (reader.FillAudioDescriptor (desc))) {
+ boost::throw_exception (DCPReadError ("could not read audio MXF information"));
+ }
+
+ _sampling_rate = desc.AudioSamplingRate.Numerator / desc.AudioSamplingRate.Denominator;
+ _channels = desc.ChannelCount;
+ _edit_rate = desc.EditRate.Numerator;
+ assert (desc.EditRate.Denominator == 1);
+ _intrinsic_duration = desc.ContainerDuration;
+}
+
+boost::filesystem::path
+SoundAsset::path_from_channel (Channel channel, vector<boost::filesystem::path> const & files)
+{
+ unsigned int const c = int (channel);
+ assert (c < files.size ());
+ return files[c];
+}
+
+void
+SoundAsset::create (boost::function<boost::filesystem::path (Channel)> get_path)
+{
+ ASDCP::Rational asdcp_edit_rate (_edit_rate, 1);
+
+ assert (_channels > 0);
+ ASDCP::PCM::WAVParser* pcm_parser_channel[_channels];
+ for (int i = 0; i < _channels; ++i) {
+ pcm_parser_channel[i] = new ASDCP::PCM::WAVParser ();
+ }
+
+ Kumu::Result_t r = pcm_parser_channel[0]->OpenRead (get_path(LEFT).string().c_str(), asdcp_edit_rate);
+ if (ASDCP_FAILURE (r)) {
+ boost::throw_exception (FileError ("could not open WAV file for reading", get_path(LEFT), r));
}
ASDCP::PCM::AudioDescriptor audio_desc;
- pcm_parser_channel[0].FillAudioDescriptor (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 * files.size ();
+ audio_desc.EditRate = asdcp_edit_rate;
+ audio_desc.AvgBps = audio_desc.AvgBps * _channels;
- ASDCP::PCM::FrameBuffer frame_buffer_channel[files.size()];
- ASDCP::PCM::AudioDescriptor audio_desc_channel[files.size()];
-
- int j = 0;
- for (list<string>::const_iterator i = files.begin(); i != files.end(); ++i) {
+ 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) {
+ frame_buffer_channel[i] = new ASDCP::PCM::FrameBuffer ();
+ audio_desc_channel[i] = new ASDCP::PCM::AudioDescriptor ();
+ }
+
+ for (int i = 0; i < _channels; ++i) {
+
+ boost::filesystem::path const path = get_path (channels[i]);
- if (ASDCP_FAILURE (pcm_parser_channel[j].OpenRead (i->c_str(), asdcp_fps))) {
- throw runtime_error ("could not open WAV file for reading");
+ Kumu::Result_t r = pcm_parser_channel[i]->OpenRead (path.string().c_str(), asdcp_edit_rate);
+ if (ASDCP_FAILURE (r)) {
+ boost::throw_exception (FileError ("could not open WAV file for reading", path, r));
}
- pcm_parser_channel[j].FillAudioDescriptor (audio_desc_channel[j]);
- frame_buffer_channel[j].Capacity (ASDCP::PCM::CalcFrameBufferSize (audio_desc_channel[j]));
+ 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[j].ChannelCount;
- audio_desc.BlockAlign += audio_desc_channel[j].BlockAlign;
- ++j;
+ audio_desc.ChannelCount += audio_desc_channel[i]->ChannelCount;
+ audio_desc.BlockAlign += audio_desc_channel[i]->BlockAlign;
}
ASDCP::PCM::FrameBuffer frame_buffer;
frame_buffer.Size (ASDCP::PCM::CalcFrameBufferSize (audio_desc));
ASDCP::WriterInfo writer_info;
- fill_writer_info (&writer_info);
+ MXFAsset::fill_writer_info (&writer_info);
ASDCP::PCM::MXFWriter mxf_writer;
- if (ASDCP_FAILURE (mxf_writer.OpenWrite (_mxf_path.c_str(), writer_info, audio_desc))) {
- throw runtime_error ("could not open audio MXF for writing");
+ r = mxf_writer.OpenWrite (path().string().c_str(), writer_info, audio_desc);
+ if (ASDCP_FAILURE (r)) {
+ boost::throw_exception (FileError ("could not open audio MXF for writing", path().string(), r));
}
+
+ for (int i = 0; i < _intrinsic_duration; ++i) {
- 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]))) {
+ boost::throw_exception (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]);
+ byte_t sample_size = ASDCP::PCM::CalcSampleSize (*audio_desc_channel[0]);
int offset = 0;
- for (list<string>::size_type j = 0; j < files.size(); ++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 runtime_error ("could not read audio frame");
- }
-
- if (frame_buffer_channel[j].Size() != frame_buffer_channel[j].Capacity()) {
- throw runtime_error ("short audio frame");
- }
- }
-
while (data_s < data_e) {
- for (list<string>::size_type j = 0; j < files.size(); ++j) {
- byte_t* frame = frame_buffer_channel[j].Data() + offset;
+ 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 runtime_error ("could not write audio MXF frame");
+ 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);
+
+ 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;
}
+ _frame_buffer_offset += 3 * _asset->channels();
+
+ assert (_frame_buffer_offset <= int (_state->frame_buffer.Capacity()));
- Progress (float (i) / _length);
+ /* Finish the MXF frame if required */
+ if (_frame_buffer_offset == int (_state->frame_buffer.Capacity())) {
+ write_current_frame ();
+ _frame_buffer_offset = 0;
+ memset (_state->frame_buffer.Data(), 0, _state->frame_buffer.Capacity());
+ }
}
+}
- if (ASDCP_FAILURE (mxf_writer.Finalize())) {
- throw runtime_error ("could not finalise audio MXF");
+void
+SoundAssetWriter::write_current_frame ()
+{
+ ASDCP::Result_t const r = _state->mxf_writer.WriteFrame (_state->frame_buffer, _state->encryption_context, 0);
+ if (ASDCP_FAILURE (r)) {
+ boost::throw_exception (MiscError ("could not write audio MXF frame (" + lexical_cast<string> (int (r)) + ")"));
}
- _digest = make_digest (_mxf_path);
+ ++_frames_written;
}
void
-SoundAsset::write_to_cpl (ostream& s) const
+SoundAssetWriter::finalize ()
{
- s << " <MainSound>\n"
- << " <Id>" << _uuid << "</Id>\n"
- << " <AnnotationText>" << filesystem::path(_mxf_path).filename() << "</AnnotationText>\n"
- << " <EditRate>" << _fps << "</EditRate>\n"
- << " <IntrinsicDuration>" << _length << "</IntrinsicDuration>\n"
- << " <EntryPoint>0</EntryPoint>\n"
- << " <Duration>" << _length << "</Duration>\n"
- << " </MainSound>\n";
+ if (_frame_buffer_offset > 0) {
+ write_current_frame ();
+ }
+
+ if (ASDCP_FAILURE (_state->mxf_writer.Finalize())) {
+ boost::throw_exception (MiscError ("could not finalise audio MXF"));
+ }
+
+ _finalized = true;
+ _asset->set_intrinsic_duration (_frames_written);
+ _asset->set_duration (_frames_written);
}
+string
+SoundAsset::key_type () const
+{
+ return "MDAK";
+}
projects / libdcp.git / blobdiff