blob: 0c90581a29a0d6f8184d787cf027bc4260ddf71b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
/*
Copyright (C) 2007 Paul Davis
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 __ardour_resampled_source_h__
#define __ardour_resampled_source_h__
#include <samplerate.h>
#include "ardour/libardour_visibility.h"
#include "ardour/types.h"
#include "ardour/importable_source.h"
namespace ARDOUR {
class LIBARDOUR_API ResampledImportableSource : public ImportableSource
{
public:
ResampledImportableSource (boost::shared_ptr<ImportableSource>, framecnt_t rate, SrcQuality);
~ResampledImportableSource ();
framecnt_t read (Sample* buffer, framecnt_t nframes);
float ratio() const { return _src_data.src_ratio; }
uint32_t channels() const { return source->channels(); }
framecnt_t length() const { return source->length(); }
framecnt_t samplerate() const { return source->samplerate(); }
void seek (framepos_t);
framepos_t natural_position() const;
bool clamped_at_unity () const {
/* resampling may generate inter-sample peaks with magnitude > 1 */
return false;
}
static const uint32_t blocksize;
private:
boost::shared_ptr<ImportableSource> source;
float* _input;
int _src_type;
SRC_STATE* _src_state;
SRC_DATA _src_data;
bool _end_of_input;
};
}
#endif /* __ardour_resampled_source_h__ */
|
