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/*

** Copyright (C) 2005-2012 Erik de Castro Lopo <erikd@mega-nerd.com>

**

** All rights reserved.

**

** Redistribution and use in source and binary forms, with or without

** modification, are permitted provided that the following conditions are

** met:

**

**     * Redistributions of source code must retain the above copyright

**       notice, this list of conditions and the following disclaimer.

**     * Redistributions in binary form must reproduce the above copyright

**       notice, this list of conditions and the following disclaimer in

**       the documentation and/or other materials provided with the

**       distribution.

**     * Neither the author nor the names of any contributors may be used

**       to endorse or promote products derived from this software without

**       specific prior written permission.

**

** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED

** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR

** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;

** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF

** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

/*

** The above modified BSD style license (GPL and LGPL compatible) applies to

** this file. It does not apply to libsndfile itself which is released under

** the GNU LGPL or the libsndfile test suite which is released under the GNU

** GPL.

** This means that this header file can be used under this modified BSD style

** license, but the LGPL still holds for the libsndfile library itself.

*/

/*

** sndfile.hh -- A lightweight C++ wrapper for the libsndfile API.

**

** All the methods are inlines and all functionality is contained in this

** file. There is no separate implementation file.

**

** API documentation is in the doc/ directory of the source code tarball

** and at http://www.mega-nerd.com/libsndfile/api.html.

*/

#ifndef SNDFILE_HH

#define SNDFILE_HH

#include "sndfile.h"

#include <string>

#include <new> // for std::nothrow

class SndfileHandle

{	private :

		struct SNDFILE_ref

		{	SNDFILE_ref (void) ;

			~SNDFILE_ref (void) ;

			SNDFILE *sf ;

			SF_INFO sfinfo ;

			int ref ;

			} ;

		SNDFILE_ref *p ;

	public :

			/* Default constructor */

			SndfileHandle (void) : p (NULL) {} ;

			SndfileHandle (const char *path, int mode = SFM_READ,

							int format = 0, int channels = 0, int samplerate = 0) ;

			SndfileHandle (std::string const & path, int mode = SFM_READ,

							int format = 0, int channels = 0, int samplerate = 0) ;

			SndfileHandle (int fd, bool close_desc, int mode = SFM_READ,

							int format = 0, int channels = 0, int samplerate = 0) ;

			SndfileHandle (SF_VIRTUAL_IO &sfvirtual, void *user_data, int mode = SFM_READ,

							int format = 0, int channels = 0, int samplerate = 0) ;

#ifdef ENABLE_SNDFILE_WINDOWS_PROTOTYPES

			SndfileHandle (LPCWSTR wpath, int mode = SFM_READ,

							int format = 0, int channels = 0, int samplerate = 0) ;

#endif

			~SndfileHandle (void) ;

			SndfileHandle (const SndfileHandle &orig) ;

			SndfileHandle & operator = (const SndfileHandle &rhs) ;

		/* Mainly for debugging/testing. */

		int refCount (void) const { return (p == NULL) ? 0 : p->ref ; }

		operator bool () const { return (p != NULL) ; }

		bool operator == (const SndfileHandle &rhs) const { return (p == rhs.p) ; }

		sf_count_t	frames (void) const		{ return p ? p->sfinfo.frames : 0 ; }

		int			format (void) const		{ return p ? p->sfinfo.format : 0 ; }

		int			channels (void) const	{ return p ? p->sfinfo.channels : 0 ; }

		int			samplerate (void) const { return p ? p->sfinfo.samplerate : 0 ; }

		int error (void) const ;

		const char * strError (void) const ;

		int command (int cmd, void *data, int datasize) ;

		sf_count_t	seek (sf_count_t frames, int whence) ;

		void writeSync (void) ;

		int setString (int str_type, const char* str) ;

		const char* getString (int str_type) const ;

		static int formatCheck (int format, int channels, int samplerate) ;

		sf_count_t read (short *ptr, sf_count_t items) ;

		sf_count_t read (int *ptr, sf_count_t items) ;

		sf_count_t read (float *ptr, sf_count_t items) ;

		sf_count_t read (double *ptr, sf_count_t items) ;

		sf_count_t write (const short *ptr, sf_count_t items) ;

		sf_count_t write (const int *ptr, sf_count_t items) ;

		sf_count_t write (const float *ptr, sf_count_t items) ;

		sf_count_t write (const double *ptr, sf_count_t items) ;

		sf_count_t readf (short *ptr, sf_count_t frames) ;

		sf_count_t readf (int *ptr, sf_count_t frames) ;

		sf_count_t readf (float *ptr, sf_count_t frames) ;

		sf_count_t readf (double *ptr, sf_count_t frames) ;

		sf_count_t writef (const short *ptr, sf_count_t frames) ;

		sf_count_t writef (const int *ptr, sf_count_t frames) ;

		sf_count_t writef (const float *ptr, sf_count_t frames) ;

		sf_count_t writef (const double *ptr, sf_count_t frames) ;

		sf_count_t	readRaw		(void *ptr, sf_count_t bytes) ;

		sf_count_t	writeRaw	(const void *ptr, sf_count_t bytes) ;

		/**< Raw access to the handle. SndfileHandle keeps ownership. */

		SNDFILE * rawHandle (void) ;

		/**< Take ownership of handle, if reference count is 1. */

		SNDFILE * takeOwnership (void) ;

} ;

/*==============================================================================

**	Nothing but implementation below.

*/

inline

SndfileHandle::SNDFILE_ref::SNDFILE_ref (void)

: sf (NULL), sfinfo (), ref (1)

{}

inline

SndfileHandle::SNDFILE_ref::~SNDFILE_ref (void)

{	if (sf != NULL) sf_close (sf) ; }

inline

SndfileHandle::SndfileHandle (const char *path, int mode, int fmt, int chans, int srate)

: p (NULL)

{

	p = new (std::nothrow) SNDFILE_ref () ;

	if (p != NULL)

	{	p->ref = 1 ;

		p->sfinfo.frames = 0 ;

		p->sfinfo.channels = chans ;

		p->sfinfo.format = fmt ;

		p->sfinfo.samplerate = srate ;

		p->sfinfo.sections = 0 ;

		p->sfinfo.seekable = 0 ;

		p->sf = sf_open (path, mode, &p->sfinfo) ;

		} ;

	return ;

} /* SndfileHandle const char * constructor */

inline

SndfileHandle::SndfileHandle (std::string const & path, int mode, int fmt, int chans, int srate)

: p (NULL)

{

	p = new (std::nothrow) SNDFILE_ref () ;

	if (p != NULL)

	{	p->ref = 1 ;

		p->sfinfo.frames = 0 ;

		p->sfinfo.channels = chans ;

		p->sfinfo.format = fmt ;

		p->sfinfo.samplerate = srate ;

		p->sfinfo.sections = 0 ;

		p->sfinfo.seekable = 0 ;

		p->sf = sf_open (path.c_str (), mode, &p->sfinfo) ;

		} ;

	return ;

} /* SndfileHandle std::string constructor */

inline

SndfileHandle::SndfileHandle (int fd, bool close_desc, int mode, int fmt, int chans, int srate)

: p (NULL)

{

	if (fd < 0)

		return ;

	p = new (std::nothrow) SNDFILE_ref () ;

	if (p != NULL)

	{	p->ref = 1 ;

		p->sfinfo.frames = 0 ;

		p->sfinfo.channels = chans ;

		p->sfinfo.format = fmt ;

		p->sfinfo.samplerate = srate ;

		p->sfinfo.sections = 0 ;

		p->sfinfo.seekable = 0 ;

		p->sf = sf_open_fd (fd, mode, &p->sfinfo, close_desc) ;

		} ;

	return ;

} /* SndfileHandle fd constructor */

inline

SndfileHandle::SndfileHandle (SF_VIRTUAL_IO &sfvirtual, void *user_data, int mode, int fmt, int chans, int srate)

: p (NULL)

{

	p = new (std::nothrow) SNDFILE_ref () ;

	if (p != NULL)

	{	p->ref = 1 ;

		p->sfinfo.frames = 0 ;

		p->sfinfo.channels = chans ;

		p->sfinfo.format = fmt ;

		p->sfinfo.samplerate = srate ;

		p->sfinfo.sections = 0 ;

		p->sfinfo.seekable = 0 ;

		p->sf = sf_open_virtual (&sfvirtual, mode, &p->sfinfo, user_data) ;

		} ;

	return ;

} /* SndfileHandle std::string constructor */

inline

SndfileHandle::~SndfileHandle (void)

{	if (p != NULL && --p->ref == 0)

		delete p ;

} /* SndfileHandle destructor */

inline

SndfileHandle::SndfileHandle (const SndfileHandle &orig)

: p (orig.p)

{	if (p != NULL)

		++p->ref ;

} /* SndfileHandle copy constructor */

inline SndfileHandle &

SndfileHandle::operator = (const SndfileHandle &rhs)

{

	if (&rhs == this)

		return *this ;

	if (p != NULL && --p->ref == 0)

		delete p ;

	p = rhs.p ;

	if (p != NULL)

		++p->ref ;

	return *this ;

} /* SndfileHandle assignment operator */

inline int

SndfileHandle::error (void) const

{	return sf_error (p->sf) ; }

inline const char *

SndfileHandle::strError (void) const

{	return sf_strerror (p->sf) ; }

inline int

SndfileHandle::command (int cmd, void *data, int datasize)

{	return sf_command (p->sf, cmd, data, datasize) ; }

inline sf_count_t

SndfileHandle::seek (sf_count_t frame_count, int whence)

{	return sf_seek (p->sf, frame_count, whence) ; }

inline void

SndfileHandle::writeSync (void)

{	sf_write_sync (p->sf) ; }

inline int

SndfileHandle::setString (int str_type, const char* str)

{	return sf_set_string (p->sf, str_type, str) ; }

inline const char*

SndfileHandle::getString (int str_type) const

{	return sf_get_string (p->sf, str_type) ; }

inline int

SndfileHandle::formatCheck (int fmt, int chans, int srate)

{

	SF_INFO sfinfo ;

	sfinfo.frames = 0 ;

	sfinfo.channels = chans ;

	sfinfo.format = fmt ;

	sfinfo.samplerate = srate ;

	sfinfo.sections = 0 ;

	sfinfo.seekable = 0 ;

	return sf_format_check (&sfinfo) ;

}

/*---------------------------------------------------------------------*/

inline sf_count_t

SndfileHandle::read (short *ptr, sf_count_t items)

{	return sf_read_short (p->sf, ptr, items) ; }

inline sf_count_t

SndfileHandle::read (int *ptr, sf_count_t items)

{	return sf_read_int (p->sf, ptr, items) ; }

inline sf_count_t

SndfileHandle::read (float *ptr, sf_count_t items)

{	return sf_read_float (p->sf, ptr, items) ; }

inline sf_count_t

SndfileHandle::read (double *ptr, sf_count_t items)

{	return sf_read_double (p->sf, ptr, items) ; }

inline sf_count_t

SndfileHandle::write (const short *ptr, sf_count_t items)

{	return sf_write_short (p->sf, ptr, items) ; }

inline sf_count_t

SndfileHandle::write (const int *ptr, sf_count_t items)

{	return sf_write_int (p->sf, ptr, items) ; }

inline sf_count_t

SndfileHandle::write (const float *ptr, sf_count_t items)

{	return sf_write_float (p->sf, ptr, items) ; }

inline sf_count_t

SndfileHandle::write (const double *ptr, sf_count_t items)

{	return sf_write_double (p->sf, ptr, items) ; }

inline sf_count_t

SndfileHandle::readf (short *ptr, sf_count_t frame_count)

{	return sf_readf_short (p->sf, ptr, frame_count) ; }

inline sf_count_t

SndfileHandle::readf (int *ptr, sf_count_t frame_count)

{	return sf_readf_int (p->sf, ptr, frame_count) ; }

inline sf_count_t

SndfileHandle::readf (float *ptr, sf_count_t frame_count)

{	return sf_readf_float (p->sf, ptr, frame_count) ; }

inline sf_count_t

SndfileHandle::readf (double *ptr, sf_count_t frame_count)

{	return sf_readf_double (p->sf, ptr, frame_count) ; }

inline sf_count_t

SndfileHandle::writef (const short *ptr, sf_count_t frame_count)

{	return sf_writef_short (p->sf, ptr, frame_count) ; }

inline sf_count_t

SndfileHandle::writef (const int *ptr, sf_count_t frame_count)

{	return sf_writef_int (p->sf, ptr, frame_count) ; }

inline sf_count_t

SndfileHandle::writef (const float *ptr, sf_count_t frame_count)

{	return sf_writef_float (p->sf, ptr, frame_count) ; }

inline sf_count_t

SndfileHandle::writef (const double *ptr, sf_count_t frame_count)

{	return sf_writef_double (p->sf, ptr, frame_count) ; }

inline sf_count_t

SndfileHandle::readRaw (void *ptr, sf_count_t bytes)

{	return sf_read_raw (p->sf, ptr, bytes) ; }

inline sf_count_t

SndfileHandle::writeRaw (const void *ptr, sf_count_t bytes)

{	return sf_write_raw (p->sf, ptr, bytes) ; }

inline SNDFILE *

SndfileHandle::rawHandle (void)

{	return (p ? p->sf : NULL) ; }

inline SNDFILE *

SndfileHandle::takeOwnership (void)

{

	if (p == NULL || (p->ref != 1))

		return NULL ;

	SNDFILE * sf = p->sf ;

	p->sf = NULL ;

	delete p ;

	p = NULL ;

	return sf ;

}

#ifdef ENABLE_SNDFILE_WINDOWS_PROTOTYPES

inline

SndfileHandle::SndfileHandle (LPCWSTR wpath, int mode, int fmt, int chans, int srate)

: p (NULL)

{

	p = new (std::nothrow) SNDFILE_ref () ;

	if (p != NULL)

	{	p->ref = 1 ;

		p->sfinfo.frames = 0 ;

		p->sfinfo.channels = chans ;

		p->sfinfo.format = fmt ;

		p->sfinfo.samplerate = srate ;

		p->sfinfo.sections = 0 ;

		p->sfinfo.seekable = 0 ;

		p->sf = sf_wchar_open (wpath, mode, &p->sfinfo) ;

		} ;

	return ;

} /* SndfileHandle const wchar_t * constructor */

#endif

#endif	/* SNDFILE_HH */