2 Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
4 This file is part of libdcp.
6 libdcp is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 libdcp is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with libdcp. If not, see <http://www.gnu.org/licenses/>.
19 In addition, as a special exception, the copyright holders give
20 permission to link the code of portions of this program with the
21 OpenSSL library under certain conditions as described in each
22 individual source file, and distribute linked combinations
25 You must obey the GNU General Public License in all respects
26 for all of the code used other than OpenSSL. If you modify
27 file(s) with this exception, you may extend this exception to your
28 version of the file(s), but you are not obligated to do so. If you
29 do not wish to do so, delete this exception statement from your
30 version. If you delete this exception statement from all source
31 files in the program, then also delete it here.
34 /** @file src/sound_mxf.cc
35 * @brief SoundAsset class.
38 #include "sound_asset.h"
40 #include "exceptions.h"
41 #include "sound_frame.h"
42 #include "sound_asset_writer.h"
43 #include "sound_asset_reader.h"
44 #include "compose.hpp"
45 #include "dcp_assert.h"
46 #include <asdcp/KM_fileio.h>
47 #include <asdcp/AS_DCP.h>
48 #include <libxml++/nodes/element.h>
49 #include <boost/filesystem.hpp>
55 using boost::shared_ptr;
56 using boost::dynamic_pointer_cast;
59 SoundAsset::SoundAsset (boost::filesystem::path file)
62 ASDCP::PCM::MXFReader reader;
63 Kumu::Result_t r = reader.OpenRead (file.string().c_str());
64 if (ASDCP_FAILURE (r)) {
65 boost::throw_exception (MXFFileError ("could not open MXF file for reading", file.string(), r));
68 ASDCP::PCM::AudioDescriptor desc;
69 if (ASDCP_FAILURE (reader.FillAudioDescriptor (desc))) {
70 boost::throw_exception (DCPReadError ("could not read audio MXF information"));
73 _sampling_rate = desc.AudioSamplingRate.Numerator / desc.AudioSamplingRate.Denominator;
74 _channels = desc.ChannelCount;
75 _edit_rate = Fraction (desc.EditRate.Numerator, desc.EditRate.Denominator);
77 _intrinsic_duration = desc.ContainerDuration;
79 ASDCP::WriterInfo info;
80 if (ASDCP_FAILURE (reader.FillWriterInfo (info))) {
81 boost::throw_exception (DCPReadError ("could not read audio MXF information"));
84 _id = read_writer_info (info);
87 SoundAsset::SoundAsset (Fraction edit_rate, int sampling_rate, int channels)
88 : _edit_rate (edit_rate)
89 , _intrinsic_duration (0)
90 , _channels (channels)
91 , _sampling_rate (sampling_rate)
97 SoundAsset::equals (shared_ptr<const Asset> other, EqualityOptions opt, NoteHandler note) const
99 ASDCP::PCM::MXFReader reader_A;
100 Kumu::Result_t r = reader_A.OpenRead (file().string().c_str());
101 if (ASDCP_FAILURE (r)) {
102 boost::throw_exception (MXFFileError ("could not open MXF file for reading", file().string(), r));
105 ASDCP::PCM::MXFReader reader_B;
106 r = reader_B.OpenRead (other->file().string().c_str());
107 if (ASDCP_FAILURE (r)) {
108 boost::throw_exception (MXFFileError ("could not open MXF file for reading", file().string(), r));
111 ASDCP::PCM::AudioDescriptor desc_A;
112 if (ASDCP_FAILURE (reader_A.FillAudioDescriptor (desc_A))) {
113 boost::throw_exception (DCPReadError ("could not read audio MXF information"));
115 ASDCP::PCM::AudioDescriptor desc_B;
116 if (ASDCP_FAILURE (reader_B.FillAudioDescriptor (desc_B))) {
117 boost::throw_exception (DCPReadError ("could not read audio MXF information"));
120 if (desc_A.EditRate != desc_B.EditRate) {
124 "audio edit rates differ: %1/%2 cf %3/%4",
125 desc_A.EditRate.Numerator, desc_A.EditRate.Denominator, desc_B.EditRate.Numerator, desc_B.EditRate.Denominator
129 } else if (desc_A.AudioSamplingRate != desc_B.AudioSamplingRate) {
133 "audio sampling rates differ: %1 cf %2",
134 desc_A.AudioSamplingRate.Numerator, desc_A.AudioSamplingRate.Denominator,
135 desc_B.AudioSamplingRate.Numerator, desc_B.AudioSamplingRate.Numerator
139 } else if (desc_A.Locked != desc_B.Locked) {
140 note (DCP_ERROR, String::compose ("audio locked flags differ: %1 cf %2", desc_A.Locked, desc_B.Locked));
142 } else if (desc_A.ChannelCount != desc_B.ChannelCount) {
143 note (DCP_ERROR, String::compose ("audio channel counts differ: %1 cf %2", desc_A.ChannelCount, desc_B.ChannelCount));
145 } else if (desc_A.QuantizationBits != desc_B.QuantizationBits) {
146 note (DCP_ERROR, String::compose ("audio bits per sample differ: %1 cf %2", desc_A.QuantizationBits, desc_B.QuantizationBits));
148 } else if (desc_A.BlockAlign != desc_B.BlockAlign) {
149 note (DCP_ERROR, String::compose ("audio bytes per sample differ: %1 cf %2", desc_A.BlockAlign, desc_B.BlockAlign));
151 } else if (desc_A.AvgBps != desc_B.AvgBps) {
152 note (DCP_ERROR, String::compose ("audio average bps differ: %1 cf %2", desc_A.AvgBps, desc_B.AvgBps));
154 } else if (desc_A.LinkedTrackID != desc_B.LinkedTrackID) {
155 note (DCP_ERROR, String::compose ("audio linked track IDs differ: %1 cf %2", desc_A.LinkedTrackID, desc_B.LinkedTrackID));
157 } else if (desc_A.ContainerDuration != desc_B.ContainerDuration) {
158 note (DCP_ERROR, String::compose ("audio container durations differ: %1 cf %2", desc_A.ContainerDuration, desc_B.ContainerDuration));
160 } else if (desc_A.ChannelFormat != desc_B.ChannelFormat) {
164 shared_ptr<const SoundAsset> other_sound = dynamic_pointer_cast<const SoundAsset> (other);
166 shared_ptr<const SoundAssetReader> reader = start_read ();
167 shared_ptr<const SoundAssetReader> other_reader = other_sound->start_read ();
169 for (int i = 0; i < _intrinsic_duration; ++i) {
171 shared_ptr<const SoundFrame> frame_A = reader->get_frame (i);
172 shared_ptr<const SoundFrame> frame_B = other_reader->get_frame (i);
174 if (frame_A->size() != frame_B->size()) {
175 note (DCP_ERROR, String::compose ("sizes of audio data for frame %1 differ", i));
179 if (memcmp (frame_A->data(), frame_B->data(), frame_A->size()) != 0) {
180 for (int i = 0; i < frame_A->size(); ++i) {
181 int const d = abs (frame_A->data()[i] - frame_B->data()[i]);
182 if (d > opt.max_audio_sample_error) {
183 note (DCP_ERROR, String::compose ("PCM data difference of %1", d));
193 shared_ptr<SoundAssetWriter>
194 SoundAsset::start_write (boost::filesystem::path file, Standard standard)
196 /* XXX: can't we use a shared_ptr here? */
197 return shared_ptr<SoundAssetWriter> (new SoundAssetWriter (this, file, standard));
200 shared_ptr<SoundAssetReader>
201 SoundAsset::start_read () const
203 return shared_ptr<SoundAssetReader> (new SoundAssetReader (this));
207 SoundAsset::pkl_type (Standard standard) const
211 return "application/x-smpte-mxf;asdcpKind=Sound";
213 return "application/mxf";
220 SoundAsset::valid_mxf (boost::filesystem::path file)
222 ASDCP::PCM::MXFReader reader;
223 Kumu::Result_t r = reader.OpenRead (file.string().c_str ());
224 return !ASDCP_FAILURE (r);