/*
- 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 DCP-o-matic.
+
+ DCP-o-matic 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,
+ DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
+
/** @file src/lib/audio_buffers.h
* @brief AudioBuffers class.
*/
+
#ifndef DCPOMATIC_AUDIO_BUFFERS_H
#define DCPOMATIC_AUDIO_BUFFERS_H
-#include <boost/shared_ptr.hpp>
+
+#include <stdint.h>
+#include <memory>
+
/** @class AudioBuffers
* @brief A class to hold multi-channel audio data in float format.
+ *
+ * The use of int32_t for frame counts in this class is due to the
+ * round-up to the next power-of-2 code in ensure_size(); if that
+ * were changed the frame count could use any integer type.
*/
class AudioBuffers
{
public:
- AudioBuffers (int channels, int frames);
+ AudioBuffers (int channels, int32_t frames);
AudioBuffers (AudioBuffers const &);
- AudioBuffers (boost::shared_ptr<const AudioBuffers>);
+ explicit AudioBuffers (std::shared_ptr<const AudioBuffers>);
+ AudioBuffers (std::shared_ptr<const AudioBuffers> other, int32_t frames_to_copy, int32_t read_offset);
~AudioBuffers ();
AudioBuffers & operator= (AudioBuffers const &);
- void ensure_size (int);
+ std::shared_ptr<AudioBuffers> clone () const;
+ std::shared_ptr<AudioBuffers> channel (int) const;
+
+ void ensure_size (int32_t);
float** data () const {
return _data;
}
-
+
float* data (int) const;
int channels () const {
return _frames;
}
- void set_frames (int f);
+ void set_frames (int32_t f);
void make_silent ();
void make_silent (int c);
- void make_silent (int from, int frames);
+ void make_silent (int32_t from, int32_t frames);
void apply_gain (float);
- void copy_from (AudioBuffers const * from, int frames_to_copy, int read_offset, int write_offset);
- void move (int from, int to, int frames);
+ void copy_from (AudioBuffers const * from, int32_t frames_to_copy, int32_t read_offset, int32_t write_offset);
+ void copy_channel_from (AudioBuffers const * from, int from_channel, int to_channel);
+ void move (int32_t frames, int32_t from, int32_t to);
void accumulate_channel (AudioBuffers const * from, int from_channel, int to_channel, float gain = 1);
- void accumulate_frames (AudioBuffers const *, int read_offset, int write_offset, int frames);
+ void accumulate_frames (AudioBuffers const * from, int32_t frames, int32_t read_offset, int32_t write_offset);
+ void append (std::shared_ptr<const AudioBuffers> other);
+ void trim_start (int32_t frames);
private:
- void allocate (int, int);
+ void allocate (int channels, int32_t frames);
void deallocate ();
-
+
/** Number of channels */
int _channels;
/** Number of frames (where a frame is one sample across all channels) */
- int _frames;
+ int32_t _frames;
/** Number of frames that _data can hold */
- int _allocated_frames;
+ int32_t _allocated_frames;
/** Audio data (so that, e.g. _data[2][6] is channel 2, sample 6) */
float** _data;
};
+
#endif