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/*
Copyright (C) 2012 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.
*/
#ifndef LIBDCP_SOUND_ASSET_H
#define LIBDCP_SOUND_ASSET_H
/** @file src/sound_asset.h
* @brief An asset made up of PCM audio data files
*/
#include "mxf_asset.h"
#include "types.h"
#include "metadata.h"
namespace libdcp
{
class SoundFrame;
class SoundAsset;
class SoundAssetWriter
{
public:
void write (float const * const *, int);
void finalize ();
private:
friend class SoundAsset;
SoundAssetWriter (SoundAsset *, MXFMetadata const &);
/* no copy construction */
SoundAssetWriter (SoundAssetWriter const &);
SoundAssetWriter& operator= (SoundAssetWriter const &);
void write_current_frame ();
/* do this with an opaque pointer so we don't have to include
ASDCP headers
*/
struct ASDCPState;
boost::shared_ptr<ASDCPState> _state;
SoundAsset* _asset;
bool _finalized;
int _frames_written;
int _frame_buffer_offset;
MXFMetadata _metadata;
};
/** @brief An asset made up of WAV files */
class SoundAsset : public MXFAsset
{
public:
/** Construct a SoundAsset, generating the MXF from some WAV files.
* This may take some time; progress is indicated by emission of the Progress signal.
* @param files Pathnames of sound files, in the order Left, Right, Centre, Lfe (sub), Left surround, Right surround.
* @param directory Directory in which to create MXF file.
* @param mxf_name Name of MXF file to create.
* @param progress Signal to inform of progress.
* @param fps Frames per second.
* @param length Length in frames.
* @param start_frame Frame in the source to start writing from.
* @param intrinsic_duration Length of the whole asset in frames.
* @param encrypted true if asset should be encrypted.
* Note that this is different to entry_point in that the asset will contain no data before start_frame.
*/
SoundAsset (
std::vector<std::string> const & files,
std::string directory,
std::string mxf_name,
boost::signals2::signal<void (float)>* progress,
int fps,
int intrinsic_duration,
bool encrypted,
MXFMetadata const & metadata = MXFMetadata ()
);
/** Construct a SoundAsset, generating the MXF from some WAV files.
* This may take some time; progress is indicated by emission of the Progress signal.
* @param get_path Functor which returns a WAV file path for a given channel.
* @param directory Directory in which to create MXF file.
* @param mxf_name Name of MXF file to create.
* @param progress Signal to inform of progress.
* @param fps Frames per second.
* @param intrinsic_duration Length of the whole asset in frames.
* @param channels Number of audio channels.
* @param encrypted true if asset should be encrypted.
*/
SoundAsset (
boost::function<std::string (Channel)> get_path,
std::string directory,
std::string mxf_name,
boost::signals2::signal<void (float)>* progress,
int fps,
int intrinsic_duration,
int channels,
bool encrypted,
MXFMetadata const & metadata = MXFMetadata ()
);
SoundAsset (
std::string directory,
std::string mxf_name
);
SoundAsset (
std::string directory,
std::string mxf_name,
int fps,
int channels,
int sampling_rate
);
boost::shared_ptr<SoundAssetWriter> start_write (MXFMetadata const & metadata = MXFMetadata ());
bool equals (boost::shared_ptr<const Asset> other, EqualityOptions opt, boost::function<void (NoteType, std::string)> note) const;
boost::shared_ptr<const SoundFrame> get_frame (int n) const;
int channels () const {
return _channels;
}
int sampling_rate () const {
return _sampling_rate;
}
private:
std::string key_type () const;
void construct (boost::function<std::string (Channel)> get_path, MXFMetadata const &);
std::string path_from_channel (Channel channel, std::vector<std::string> const & files);
std::string cpl_node_name () const;
/** Number of channels in the asset */
int _channels;
int _sampling_rate;
};
}
#endif
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