static int
mat4_close (SF_PRIVATE *psf)
{
if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
mat4_write_header (psf, SF_TRUE) ;
return 0 ;
} /* mat4_close */
int
mat4_open (SF_PRIVATE *psf)
{ int subformat, error = 0 ;
if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0))
{ if ((error = mat4_read_header (psf)))
return error ;
} ;
if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_MAT4)
return SFE_BAD_OPEN_FORMAT ;
subformat = SF_CODEC (psf->sf.format) ;
if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
{ if (psf->is_pipe)
return SFE_NO_PIPE_WRITE ;
psf->endian = SF_ENDIAN (psf->sf.format) ;
if (CPU_IS_LITTLE_ENDIAN && (psf->endian == SF_ENDIAN_CPU || psf->endian == 0))
psf->endian = SF_ENDIAN_LITTLE ;
else if (CPU_IS_BIG_ENDIAN && (psf->endian == SF_ENDIAN_CPU || psf->endian == 0))
psf->endian = SF_ENDIAN_BIG ;
if ((error = mat4_write_header (psf, SF_FALSE)))
return error ;
psf->write_header = mat4_write_header ;
} ;
psf->container_close = mat4_close ;
psf->blockwidth = psf->bytewidth * psf->sf.channels ;
switch (subformat)
{ case SF_FORMAT_PCM_16 :
case SF_FORMAT_PCM_32 :
error = pcm_init (psf) ;
break ;
case SF_FORMAT_FLOAT :
error = float32_init (psf) ;
break ;
case SF_FORMAT_DOUBLE :
error = double64_init (psf) ;
break ;
default : break ;
} ;
if (error)
return error ;
return error ;
} /* mat4_open */
static int
mat4_close (SF_PRIVATE *psf)
{
if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR)
{ /* Now we know for certain the length of the file we can
* re-write correct values for the datasize header element.
*/
psf_fseek (psf->filedes, 0, SEEK_END) ;
psf->filelength = psf_ftell (psf->filedes) ;
psf->datalength = psf->filelength - psf->dataoffset ;
psf_fseek (psf->filedes, 0, SEEK_SET) ;
psf->sf.frames = psf->datalength / psf->blockwidth ;
mat4_write_header (psf, SF_FALSE) ;
} ;
if (psf->fdata)
free (psf->fdata) ;
psf->fdata = NULL ;
return 0 ;
} /* mat4_close */
