41 static	int		htk_close		(SF_PRIVATE *psf) ;
43 static int		htk_write_header (SF_PRIVATE *psf, int calc_length) ;
44 static int		htk_read_header (SF_PRIVATE *psf) ;
51 htk_open	(SF_PRIVATE *psf)  in htk_open()  argument
55 	if (psf->is_pipe)  in htk_open()
58 	if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0))  in htk_open()
59 	{	if ((error = htk_read_header (psf)))  in htk_open()
63 	subformat = SF_CODEC (psf->sf.format) ;  in htk_open()
65 	if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)  in htk_open()
66 	{	if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_HTK)  in htk_open()
69 		psf->endian = SF_ENDIAN_BIG ;  in htk_open()
71 		if (htk_write_header (psf, SF_FALSE))  in htk_open()
72 			return psf->error ;  in htk_open()
74 		psf->write_header = htk_write_header ;  in htk_open()
77 	psf->container_close = htk_close ;  in htk_open()
79 	psf->blockwidth = psf->bytewidth * psf->sf.channels ;  in htk_open()
83 				error = pcm_init (psf) ;  in htk_open()
96 htk_close	(SF_PRIVATE *psf)  in htk_close()  argument
98 	if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)  in htk_close()
99 		htk_write_header (psf, SF_TRUE) ;  in htk_close()
105 htk_write_header (SF_PRIVATE *psf, int calc_length)  in htk_write_header()  argument
109 	current = psf_ftell (psf) ;  in htk_write_header()
112 		psf->filelength = psf_get_filelen (psf) ;  in htk_write_header()
115 	psf->header.ptr [0] = 0 ;  in htk_write_header()
116 	psf->header.indx = 0 ;  in htk_write_header()
117 	psf_fseek (psf, 0, SEEK_SET) ;  in htk_write_header()
119 	if (psf->filelength > 12)  in htk_write_header()
120 		sample_count = (psf->filelength - 12) / 2 ;  in htk_write_header()
124 	sample_period = 10000000 / psf->sf.samplerate ;  in htk_write_header()
126 	psf_binheader_writef (psf, "E444", BHW4 (sample_count), BHW4 (sample_period), BHW4 (0x20000)) ;  in htk_write_header()
129 	psf_fwrite (psf->header.ptr, psf->header.indx, 1, psf) ;  in htk_write_header()
131 	if (psf->error)  in htk_write_header()
132 		return psf->error ;  in htk_write_header()
134 	psf->dataoffset = psf->header.indx ;  in htk_write_header()
137 		psf_fseek (psf, current, SEEK_SET) ;  in htk_write_header()
139 	return psf->error ;  in htk_write_header()
186 htk_read_header (SF_PRIVATE *psf)  in htk_read_header()  argument
189 	psf_binheader_readf (psf, "pE444", 0, &sample_count, &sample_period, &marker) ;  in htk_read_header()
191 	if (2 * sample_count + 12 != psf->filelength)  in htk_read_header()
197 	psf->sf.channels = 1 ;  in htk_read_header()
200 	{	psf->sf.samplerate = 10000000 / sample_period ;  in htk_read_header()
201 		psf_log_printf (psf, "HTK Waveform file\n  Sample Count  : %d\n  Sample Period : %d => %d Hz\n",  in htk_read_header()
202 					sample_count, sample_period, psf->sf.samplerate) ;  in htk_read_header()
205 	{	psf->sf.samplerate = 16000 ;  in htk_read_header()
206 …psf_log_printf (psf, "HTK Waveform file\n  Sample Count  : %d\n  Sample Period : %d (should be > 0…  in htk_read_header()
207 					sample_count, sample_period, psf->sf.samplerate) ;  in htk_read_header()
210 	psf->sf.format = SF_FORMAT_HTK | SF_FORMAT_PCM_16 ;  in htk_read_header()
211 	psf->bytewidth = 2 ;  in htk_read_header()
214 	psf->dataoffset = 12 ;  in htk_read_header()
215 	psf->endian = SF_ENDIAN_BIG ;  in htk_read_header()
217 	psf->datalength = psf->filelength - psf->dataoffset ;  in htk_read_header()
219 	psf->blockwidth = psf->sf.channels * psf->bytewidth ;  in htk_read_header()
221 	if (! psf->sf.frames && psf->blockwidth)  in htk_read_header()
222 		psf->sf.frames = (psf->filelength - psf->dataoffset) / psf->blockwidth ;  in htk_read_header()