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Octave/sfread.cc : Tweaks.

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This commit is contained in:
Erik de Castro Lopo 2007-08-24 20:20:03 +10:00
parent 210fa2ced1
commit 4996cb91a7
1 changed files with 24 additions and 24 deletions
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48
Octave/sfread.cc
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@ -16,12 +16,12 @@
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
//#include <cstdio>
#include <octave/oct.h>
#include "sndfile.h"
#define FOUR_GIG (0x100000000LL)
#define FOUR_GIG (0x100000000LL)
#define BUFFER_FRAMES 8192
DEFUN_DLD (sfread, args, nargout , "\
-*- texinfo -*-\n\
@ -30,44 +30,44 @@ Read a sound file from disk using libsndfile.\n\
\n\
@seealso{wavread}\n\
@end deftypefn\n\
") {
SNDFILE * file ;
")
{ SNDFILE * file ;
SF_INFO sfinfo ;
octave_value_list retval ;
octave_value_list retval ;
int nargin = args.length () ;
int nargin = args.length () ;
/* Bail out if the input parameters are bad. */
if ((nargin != 1) || !args (0) .is_string () || (nargout < 1))
/* Bail out if the input parameters are bad. */
if ((nargin != 1) || !args (0) .is_string () || (nargout < 1))
{ print_usage () ;
return retval ;
} ;
} ;
memset (&sfinfo, 0, sizeof (sfinfo)) ;
std::string filename = args (0) .string_value () ;
std::string filename = args (0).string_value () ;
if ((file = sf_open (filename.c_str (), SFM_READ, &sfinfo)) == NULL)
if ((file = sf_open (filename.c_str (), SFM_READ, &sfinfo)) == NULL)
{ error ("sfread: couldn't open file %s : %s", filename.c_str (), sf_strerror (NULL)) ;
return retval ;
} ;
} ;
if (sfinfo.frames > FOUR_GIG)
printf ("This is a really huge file (%d Meg).\nYou may run out of memory trying to load it.\n", sfinfo.frames / (1024 * 1024)) ;
printf ("This is a really huge file (%lld frames).\nYou may run out of memory trying to load it.\n", sfinfo.frames) ;
dim_vector dim = dim_vector () ;
dim.resize (2) ;
dim (0) = sfinfo.frames ;
dim (1) = sfinfo.channels ;
NDArray out = NDArray (dim, 0.0) ;
dim_vector dim = dim_vector () ;
dim.resize (2) ;
dim (0) = sfinfo.frames ;
dim (1) = sfinfo.channels ;
NDArray out = NDArray (dim, 0.0) ;
float buffer [4096 * sfinfo.channels] ;
float buffer [BUFFER_FRAMES * sfinfo.channels] ;
int readcount ;
sf_count_t total = 0 ;
do
{ readcount = sf_read_float (file, buffer, 4096) ;
{ readcount = sf_read_float (file, buffer, BUFFER_FRAMES) ;
/* Make sure we don't read more frames than we allocated. */
if (total + readcount > sfinfo.frames)
@ -81,10 +81,10 @@ Read a sound file from disk using libsndfile.\n\
total += readcount ;
} while (readcount > 0 && total < sfinfo.frames) ;
retval.append (out.squeeze ()) ;
retval.append (out.squeeze ()) ;
/* Clean up. */
sf_close (file) ;
/* Clean up. */
sf_close (file) ;
return retval ;
return retval ;
} /* sfread */