engines/common/SampleFile.h

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003 - 2009 Christian Schoenebeck                       *
 *   Copyright (C) 2009 Grigor Iliev                                       *
 *                                                                         *
 *   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., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#ifndef __LS_SAMPLEFILE_H__
#define __LS_SAMPLEFILE_H__

#include "Sample.h"

#include <sndfile.h>
#include "../../common/global.h"


namespace LinuxSampler {
    class SampleFile : public Sample {
        public:
            SampleFile(String File, bool DontClose = false);
            virtual ~SampleFile();

            String GetFile() { return File; }

            virtual String  GetName() { return File; }
            virtual int     GetSampleRate() { return SampleRate; }
            virtual int     GetChannelCount() { return ChannelCount; }
            virtual long    GetTotalFrameCount() { return TotalFrameCount; }
            virtual int     GetFrameSize() { return FrameSize; }

            virtual buffer_t  LoadSampleData();
            virtual buffer_t  LoadSampleData(unsigned long FrameCount);
            virtual buffer_t  LoadSampleDataWithNullSamplesExtension(uint NullFrameCount);
            virtual buffer_t  LoadSampleDataWithNullSamplesExtension(unsigned long FrameCount, uint NullFramesCount);
            virtual void      ReleaseSampleData();
            virtual buffer_t  GetCache();
            virtual long      Read(void* pBuffer, unsigned long FrameCount);

            virtual unsigned long ReadAndLoop (
                void*           pBuffer,
                unsigned long   FrameCount,
                PlaybackState*  pPlaybackState
            );

            virtual long SetPos(unsigned long FrameOffset);
            virtual long GetPos();

            void Open();
            void Close();

        private:
            String File;
            int    SampleRate;
            int    ChannelCount;
            int    Format;
            int    FrameSize;         ///< In bytes
            long   TotalFrameCount;

            SNDFILE* pSndFile;

            buffer_t RAMCache;        ///< Buffers samples (already uncompressed) in RAM.
            long SetPos(unsigned long FrameCount, int Whence);
    };
} // namespace LinuxSampler

#endif // __LS_SAMPLEFILE_H__
1	/***************************************************************************
2	* *
3	* LinuxSampler - modular, streaming capable sampler *
4	* *
5	* Copyright (C) 2003 - 2009 Christian Schoenebeck *
6	* Copyright (C) 2009 Grigor Iliev *
7	* *
8	* This program is free software; you can redistribute it and/or modify *
9	* it under the terms of the GNU General Public License as published by *
10	* the Free Software Foundation; either version 2 of the License, or *
11	* (at your option) any later version. *
12	* *
13	* This program is distributed in the hope that it will be useful, *
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16	* GNU General Public License for more details. *
17	* *
18	* You should have received a copy of the GNU General Public License *
19	* along with this program; if not, write to the Free Software *
20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21	* MA 02111-1307 USA *
22	***************************************************************************/
23
24	#ifndef __LS_SAMPLEFILE_H__
25	#define __LS_SAMPLEFILE_H__
26
27	#include "Sample.h"
28
29	#include <sndfile.h>
30	#include "../../common/global.h"
31
32
33	namespace LinuxSampler {
34	class SampleFile : public Sample {
35	public:
36	SampleFile(String File, bool DontClose = false);
37	virtual ~SampleFile();
38
39	String GetFile() { return File; }
40
41	virtual String GetName() { return File; }
42	virtual int GetSampleRate() { return SampleRate; }
43	virtual int GetChannelCount() { return ChannelCount; }
44	virtual long GetTotalFrameCount() { return TotalFrameCount; }
45	virtual int GetFrameSize() { return FrameSize; }
46
47	virtual buffer_t LoadSampleData();
48	virtual buffer_t LoadSampleData(unsigned long FrameCount);
49	virtual buffer_t LoadSampleDataWithNullSamplesExtension(uint NullFrameCount);
50	virtual buffer_t LoadSampleDataWithNullSamplesExtension(unsigned long FrameCount, uint NullFramesCount);
51	virtual void ReleaseSampleData();
52	virtual buffer_t GetCache();
53	virtual long Read(void* pBuffer, unsigned long FrameCount);
54
55	virtual unsigned long ReadAndLoop (
56	void* pBuffer,
57	unsigned long FrameCount,
58	PlaybackState* pPlaybackState
59	);
60
61	virtual long SetPos(unsigned long FrameOffset);
62	virtual long GetPos();
63
64	void Open();
65	void Close();
66
67	private:
68	String File;
69	int SampleRate;
70	int ChannelCount;
71	int Format;
72	int FrameSize; ///< In bytes
73	long TotalFrameCount;
74
75	SNDFILE* pSndFile;
76
77	buffer_t RAMCache; ///< Buffers samples (already uncompressed) in RAM.
78	long SetPos(unsigned long FrameCount, int Whence);
79	};
80	} // namespace LinuxSampler
81
82	#endif // __LS_SAMPLEFILE_H__