MXF -> Asset in lots of places.

1 files changed, 180 insertions, 0 deletions

diff --git a/src/sound_asset.cc b/src/sound_asset.cc
new file mode 100644
index 00000000..3d23b426
--- /dev/null
+++ b/src/sound_asset.cc
@@ -0,0 +1,180 @@
+/*
+    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
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+/** @file  src/sound_mxf.cc
+ *  @brief SoundAsset class.
+ */
+
+#include "sound_asset.h"
+#include "util.h"
+#include "exceptions.h"
+#include "sound_frame.h"
+#include "sound_asset_writer.h"
+#include "compose.hpp"
+#include "KM_fileio.h"
+#include "AS_DCP.h"
+#include "dcp_assert.h"
+#include <libxml++/nodes/element.h>
+#include <boost/filesystem.hpp>
+#include <iostream>
+#include <stdexcept>
+
+using std::string;
+using std::stringstream;
+using std::ostream;
+using std::vector;
+using std::list;
+using boost::shared_ptr;
+using namespace dcp;
+
+SoundAsset::SoundAsset (boost::filesystem::path file)
+	: Asset (file)
+{
+	ASDCP::PCM::MXFReader reader;
+	Kumu::Result_t r = reader.OpenRead (file.string().c_str());
+	if (ASDCP_FAILURE (r)) {
+		boost::throw_exception (MXFFileError ("could not open MXF file for reading", file.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 = Fraction (desc.EditRate.Numerator, desc.EditRate.Denominator);
+
+	_intrinsic_duration = desc.ContainerDuration;
+
+	ASDCP::WriterInfo info;
+	if (ASDCP_FAILURE (reader.FillWriterInfo (info))) {
+		boost::throw_exception (DCPReadError ("could not read audio MXF information"));
+	}
+
+	_id = read_writer_info (info);
+}
+
+SoundAsset::SoundAsset (Fraction edit_rate, int sampling_rate, int channels)
+	: _edit_rate (edit_rate)
+	, _intrinsic_duration (0)
+	, _channels (channels)
+	, _sampling_rate (sampling_rate)
+{
+
+}
+
+bool
+SoundAsset::equals (shared_ptr<const Asset> other, EqualityOptions opt, NoteHandler note) const
+{
+	ASDCP::PCM::MXFReader reader_A;
+	Kumu::Result_t r = reader_A.OpenRead (file().string().c_str());
+	if (ASDCP_FAILURE (r)) {
+		boost::throw_exception (MXFFileError ("could not open MXF file for reading", file().string(), r));
+	}
+
+	ASDCP::PCM::MXFReader reader_B;
+	r = reader_B.OpenRead (other->file().string().c_str());
+	if (ASDCP_FAILURE (r)) {
+		boost::throw_exception (MXFFileError ("could not open MXF file for reading", file().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 (DCP_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 (DCP_ERROR, String::compose ("sizes of audio data for frame %1 differ", i));
+			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 (DCP_ERROR, String::compose ("PCM data difference of %1", 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 (file(), n, _decryption_context));
+}
+
+shared_ptr<SoundAssetWriter>
+SoundAsset::start_write (boost::filesystem::path file, Standard standard)
+{
+	/* XXX: can't we use a shared_ptr here? */
+	return shared_ptr<SoundAssetWriter> (new SoundAssetWriter (this, file, standard));
+}
+
+string
+SoundAsset::pkl_type (Standard standard) const
+{
+	switch (standard) {
+	case INTEROP:
+		return "application/x-smpte-mxf;asdcpKind=Sound";
+	case SMPTE:
+		return "application/mxf";
+	default:
+		DCP_ASSERT (false);
+	}
+}