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More Octave module hacking.

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This commit is contained in:
Erik de Castro Lopo 2007-08-25 13:20:00 +10:00
parent 24ac5c75e0
commit 5ecea5a8d1
4 changed files with 88 additions and 6 deletions
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2
Octave/Makefile.am
View File

@ -9,7 +9,7 @@ octconfig_DATA = sndfile_load.m sndfile_save.m sndfile_play.m
all : sfread.oct sfwrite.oct
sfread.oct : sfread.cc
sfread.oct : format.o sfread.cc
$(MKOCTFILE) $+ -lsndfile -o $@
sfwrite.oct : format.o sfwrite.cc

70
Octave/format.cc
View File

@ -142,3 +142,73 @@ format_of_str (const std::string & fmt)
return major_fmt | minor_fmt ;
} /* format_of_str */
static const char *
string_of_major_format (int format)
{
switch (format & SF_FORMAT_TYPEMASK)
{
case SF_FORMAT_WAV : return "wav" ;
case SF_FORMAT_AIFF : return "aiff" ;
case SF_FORMAT_AU : return "au" ;
case SF_FORMAT_PAF : return "paf" ;
case SF_FORMAT_SVX : return "svx" ;
case SF_FORMAT_NIST : return "nist" ;
case SF_FORMAT_VOC : return "voc" ;
case SF_FORMAT_IRCAM : return "ircam" ;
case SF_FORMAT_W64 : return "w64" ;
case SF_FORMAT_MAT4 : return "mat4" ;
case SF_FORMAT_MAT5 : return "mat5" ;
case SF_FORMAT_PVF : return "pvf" ;
case SF_FORMAT_XI : return "xi" ;
case SF_FORMAT_HTK : return "htk" ;
case SF_FORMAT_SDS : return "sds" ;
case SF_FORMAT_AVR : return "avr" ;
case SF_FORMAT_WAVEX : return "wavx" ;
case SF_FORMAT_SD2 : return "sd2" ;
case SF_FORMAT_FLAC : return "flac" ;
case SF_FORMAT_CAF : return "caf" ;
case SF_FORMAT_WVE : return "wfe" ;
default : break ;
} ;
return "unknown" ;
} /* string_of_major_format */
static const char *
string_of_minor_format (int format)
{
switch (format & SF_FORMAT_SUBMASK)
{
case SF_FORMAT_PCM_S8 : return "int8" ;
case SF_FORMAT_PCM_U8 : return "uint8" ;
case SF_FORMAT_PCM_16 : return "int16" ;
case SF_FORMAT_PCM_24 : return "int24" ;
case SF_FORMAT_PCM_32 : return "int32" ;
case SF_FORMAT_FLOAT : return "float" ;
case SF_FORMAT_DOUBLE : return "double" ;
case SF_FORMAT_ULAW : return "ulaw" ;
case SF_FORMAT_ALAW : return "alaw" ;
case SF_FORMAT_IMA_ADPCM : return "ima_adpcm" ;
case SF_FORMAT_MS_ADPCM : return "ms_adpcm" ;
case SF_FORMAT_GSM610 : return "gsm610" ;
case SF_FORMAT_G721_32 : return "g721_32" ;
case SF_FORMAT_G723_24 : return "g723_24" ;
case SF_FORMAT_G723_40 : return "g723_40" ;
default : break ;
} ;
return "unknown" ;
} /* string_of_minor_format */
void
string_of_format (std::string & fmt, int format)
{
char buffer [64] ;
snprintf (buffer, sizeof (buffer), "%s-%s", string_of_major_format (format), string_of_minor_format (format)) ;
fmt = buffer ;
return ;
} /* string_of_format */

2
Octave/format.h
View File

@ -17,3 +17,5 @@
*/
int format_of_str (const std::string & fmt) ;
void string_of_format (std::string & fmt, int format) ;

20
Octave/sfread.cc
View File

@ -20,12 +20,14 @@
#include "sndfile.h"
#include "format.h"
#define FOUR_GIG (0x100000000LL)
#define BUFFER_FRAMES 8192
DEFUN_DLD (sfread, args, nargout , "\
-*- texinfo -*-\n\
@deftypefn {Function File} {@var{I} =} sfread (@var{filename})\n\
@deftypefn {Function File} {@var{I},@var{srate},@var{format} =} sfread (@var{filename})\n\
Read a sound file from disk using libsndfile.\n\
\n\
@seealso{wavread}\n\
@ -39,7 +41,7 @@ Read a sound file from disk using libsndfile.\n\
int nargin = args.length () ;
/* Bail out if the input parameters are bad. */
if ((nargin != 1) || !args (0) .is_string () || (nargout < 1))
if ((nargin != 1) || !args (0) .is_string () || nargout < 1 || nargout > 3)
{ print_usage () ;
return retval ;
} ;
@ -61,9 +63,8 @@ Read a sound file from disk using libsndfile.\n\
dim (0) = sfinfo.frames ;
dim (1) = sfinfo.channels ;
puts ("Should probably be using Matrix instead.") ;
NDArray out = NDArray (dim, 0.0) ;
/* Should I be using Matrix instead? */
NDArray out (dim, 0.0) ;
float buffer [BUFFER_FRAMES * sfinfo.channels] ;
int readcount ;
@ -86,6 +87,15 @@ Read a sound file from disk using libsndfile.\n\
retval.append (out.squeeze ()) ;
if (nargout >= 2)
retval.append ((octave_uint32) sfinfo.samplerate) ;
if (nargout >= 3)
{ std::string fmt ("") ;
string_of_format (fmt, sfinfo.format) ;
retval.append (fmt) ;
} ;
/* Clean up. */
sf_close (file) ;