/*
- Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of libdcp.
+
+ libdcp 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,
+ libdcp 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.
+ along with libdcp. If not, see <http://www.gnu.org/licenses/>.
+
+ In addition, as a special exception, the copyright holders give
+ permission to link the code of portions of this program with the
+ OpenSSL library under certain conditions as described in each
+ individual source file, and distribute linked combinations
+ including the two.
+ You must obey the GNU General Public License in all respects
+ for all of the code used other than OpenSSL. If you modify
+ file(s) with this exception, you may extend this exception to your
+ version of the file(s), but you are not obligated to do so. If you
+ do not wish to do so, delete this exception statement from your
+ version. If you delete this exception statement from all source
+ files in the program, then also delete it here.
*/
+
/** @file src/sound_frame.cc
- * @brief SoundFrame class.
+ * @brief SoundFrame class
*/
+
#include "sound_frame.h"
-#include "exceptions.h"
-#include "AS_DCP.h"
-#include "KM_fileio.h"
+#include <asdcp/AS_DCP.h>
+#include <iostream>
+
-using namespace std;
+using std::cout;
using namespace dcp;
-SoundFrame::SoundFrame (boost::filesystem::path mxf_path, int n, ASDCP::AESDecContext* c)
+
+SoundFrame::SoundFrame (ASDCP::PCM::MXFReader* reader, int n, std::shared_ptr<const DecryptionContext> c)
+ : Frame<ASDCP::PCM::MXFReader, ASDCP::PCM::FrameBuffer> (reader, n, c)
{
- ASDCP::PCM::MXFReader reader;
- Kumu::Result_t r = reader.OpenRead (mxf_path.string().c_str());
- if (ASDCP_FAILURE (r)) {
- boost::throw_exception (FileError ("could not open MXF file for reading", mxf_path, r));
- }
-
- /* XXX: unfortunate guesswork on this buffer size */
- _buffer = new ASDCP::PCM::FrameBuffer (1 * Kumu::Megabyte);
-
- if (ASDCP_FAILURE (reader.ReadFrame (n, *_buffer, c))) {
- boost::throw_exception (DCPReadError ("could not read audio frame"));
- }
+ ASDCP::PCM::AudioDescriptor desc;
+ reader->FillAudioDescriptor (desc);
+ _channels = desc.ChannelCount;
}
-SoundFrame::~SoundFrame ()
+
+int32_t
+SoundFrame::get (int channel, int frame) const
{
- delete _buffer;
+ uint8_t const * d = data() + (frame * _channels * 3) + (channel * 3);
+ /* This is slightly dubious I think */
+ return (d[0] << 8 | (d[1] << 16) | (d[2] << 24)) >> 8;
}
-uint8_t const *
-SoundFrame::data () const
+
+int
+SoundFrame::channels () const
{
- return _buffer->RoData();
+ return _channels;
}
+
int
-SoundFrame::size () const
+SoundFrame::samples () const
{
- return _buffer->Size ();
+ return size() / (_channels * 3);
}