wav.c

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		case SF_FORMAT_ALAW :
			wavex_write_guid (psf, &MSGUID_SUBTYPE_ALAW) ;
			add_fact_chunk = SF_TRUE ;
			break ;

		case SF_FORMAT_MS_ADPCM : /* todo, GUID exists */

		default : return SFE_UNIMPLEMENTED ;
		} ;


	if (add_fact_chunk)
		psf_binheader_writef (psf, "etm48", fact_MARKER, 4, psf->sf.frames) ;

	if (psf->str_flags & SF_STR_LOCATE_START)
		wav_write_strings (psf, SF_STR_LOCATE_START) ;

	if (psf->has_peak && psf->peak_loc == SF_PEAK_START)
	{	psf_binheader_writef (psf, "em4", PEAK_MARKER,
			sizeof (PEAK_CHUNK) + psf->sf.channels * sizeof (PEAK_POS)) ;
		psf_binheader_writef (psf, "e44", 1, time (NULL)) ;
		for (k = 0 ; k < psf->sf.channels ; k++)
			psf_binheader_writef (psf, "ef4", psf->pchunk->peaks [k].value, psf->pchunk->peaks [k].position) ;
		} ;

	psf_binheader_writef (psf, "etm8", data_MARKER, psf->datalength) ;
	psf_fwrite (psf->header, psf->headindex, 1, psf) ;
	if (psf->error)
		return psf->error ;

	psf->dataoffset = psf->headindex ;

	if (current < psf->dataoffset)
		psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
	else if (current > 0)
		psf_fseek (psf, current, SEEK_SET) ;

	return psf->error ;
} /* wavex_write_header */



static int
wav_write_tailer (SF_PRIVATE *psf)
{	int		k ;

	/* Reset the current header buffer length to zero. */
	psf->header [0] = 0 ;
	psf->headindex = 0 ;

	psf->dataend = psf_fseek (psf, 0, SEEK_END) ;

	/* Add a PEAK chunk if requested. */
	if (psf->has_peak && psf->peak_loc == SF_PEAK_END)
	{	psf_binheader_writef (psf, "em4", PEAK_MARKER,
			sizeof (PEAK_CHUNK) + psf->sf.channels * sizeof (PEAK_POS)) ;
		psf_binheader_writef (psf, "e44", 1, time (NULL)) ;
		for (k = 0 ; k < psf->sf.channels ; k++)
			psf_binheader_writef (psf, "ef4", psf->pchunk->peaks [k].value, psf->pchunk->peaks [k].position) ;
		} ;

	if (psf->str_flags & SF_STR_LOCATE_END)
		wav_write_strings (psf, SF_STR_LOCATE_END) ;

	/* Write the tailer. */
	if (psf->headindex > 0)
		psf_fwrite (psf->header, psf->headindex, 1, psf) ;

	return 0 ;
} /* wav_write_tailer */

static void
wav_write_strings (SF_PRIVATE *psf, int location)
{	int	k, prev_head_index, saved_head_index ;

	prev_head_index = psf->headindex + 4 ;

	psf_binheader_writef (psf, "em4m", LIST_MARKER, 0xBADBAD, INFO_MARKER) ;

	for (k = 0 ; k < SF_MAX_STRINGS ; k++)
	{	if (psf->strings [k].type == 0)
			break ;
		if (psf->strings [k].flags != location)
			continue ;

		switch (psf->strings [k].type)
		{	case SF_STR_SOFTWARE :
				psf_binheader_writef (psf, "ems", ISFT_MARKER, psf->strings [k].str) ;
				break ;

			case SF_STR_TITLE :
				psf_binheader_writef (psf, "ems", INAM_MARKER, psf->strings [k].str) ;
				break ;

			case SF_STR_COPYRIGHT :
				psf_binheader_writef (psf, "ems", ICOP_MARKER, psf->strings [k].str) ;
				break ;

			case SF_STR_ARTIST :
				psf_binheader_writef (psf, "ems", IART_MARKER, psf->strings [k].str) ;
				break ;

			case SF_STR_COMMENT :
				psf_binheader_writef (psf, "ems", ICMT_MARKER, psf->strings [k].str) ;
				break ;

			case SF_STR_DATE :
				psf_binheader_writef (psf, "ems", ICRD_MARKER, psf->strings [k].str) ;
				break ;
			} ;
		} ;

	saved_head_index = psf->headindex ;
	psf->headindex = prev_head_index ;
	psf_binheader_writef (psf, "e4", saved_head_index - prev_head_index - 4) ;
	psf->headindex = saved_head_index ;

} /* wav_write_strings */

static int
wav_close (SF_PRIVATE *psf)
{
	if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR)
	{	wav_write_tailer (psf) ;

		if ((psf->sf.format & SF_FORMAT_TYPEMASK) == SF_FORMAT_WAV)
			wav_write_header (psf, SF_TRUE) ;
		else
			wavex_write_header (psf, SF_TRUE) ;
		} ;

	return 0 ;
} /* wav_close */

static int
wav_command (SF_PRIVATE *psf, int command, void *data, int datasize)
{
	/* Avoid compiler warnings. */
	psf = psf ;
	data = data ;
	datasize = datasize ;

	switch (command)
	{	default : break ;
		} ;

	return 0 ;
} /* wav_command */

static int
wav_subchunk_parse (SF_PRIVATE *psf, int chunk)
{	sf_count_t	current_pos ;
	char		*cptr ;
	int 		dword, bytesread, length ;

	current_pos = psf_fseek (psf, 0, SEEK_CUR) ;

	bytesread = psf_binheader_readf (psf, "e4", &length) ;

	if (current_pos + length > psf->filelength)
	{	psf_log_printf (psf, "%M : %d (should be %d)\n", chunk, length, (int) (psf->filelength - current_pos)) ;
		length = psf->filelength - current_pos ;
		}
	else
		psf_log_printf (psf, "%M : %d\n", chunk, length) ;


	while (bytesread < length)
	{	bytesread += psf_binheader_readf (psf, "m", &chunk) ;

		switch (chunk)
		{	case adtl_MARKER :
			case INFO_MARKER :
					/* These markers don't contain anything. */
					psf_log_printf (psf, "  %M\n", chunk) ;
					break ;

			case data_MARKER:
					psf_log_printf (psf, "  %M inside a LIST block??? Backing out.\n", chunk) ;
					/* Jump back four bytes and return to caller. */
					psf_binheader_readf (psf, "j", -4) ;
					return 0 ;

			case ISFT_MARKER :
			case ICOP_MARKER :
			case IARL_MARKER :
			case IART_MARKER :
			case ICMT_MARKER :
			case ICRD_MARKER :
			case IENG_MARKER :

			case INAM_MARKER :
			case IPRD_MARKER :
			case ISBJ_MARKER :
			case ISRC_MARKER :
					bytesread += psf_binheader_readf (psf, "e4", &dword) ;
					dword += (dword & 1) ;
					if (dword > SIGNED_SIZEOF (psf->u.cbuf))
					{	psf_log_printf (psf, "  *** %M : %d (too big)\n", chunk, dword) ;
						return SFE_INTERNAL ;
						} ;

					cptr = psf->u.cbuf ;
					psf_binheader_readf (psf, "b", cptr, dword) ;
					bytesread += dword ;
					cptr [dword - 1] = 0 ;
					psf_log_printf (psf, "    %M : %s\n", chunk, cptr) ;
					break ;

			case labl_MARKER :
					{	int mark_id ;

						bytesread += psf_binheader_readf (psf, "e44", &dword, &mark_id) ;
						dword -= 4 ;
						dword += (dword & 1) ;
						if (dword > SIGNED_SIZEOF (psf->u.cbuf))
						{	psf_log_printf (psf, "  *** %M : %d (too big)\n", chunk, dword) ;
							return SFE_INTERNAL ;
							} ;

						cptr = psf->u.cbuf ;
						psf_binheader_readf (psf, "b", cptr, dword) ;
						bytesread += dword ;
						cptr [dword - 1] = 0 ;
						psf_log_printf (psf, "    %M : %d : %s\n", chunk, mark_id, cptr) ;
						} ;
					break ;


			case DISP_MARKER :
			case ltxt_MARKER :
			case note_MARKER :
					bytesread += psf_binheader_readf (psf, "e4", &dword) ;
					dword += (dword & 1) ;
					psf_binheader_readf (psf, "j", dword) ;
					bytesread += dword ;
					psf_log_printf (psf, "    %M : %d\n", chunk, dword) ;
					break ;

			default :
					psf_binheader_readf (psf, "e4", &dword) ;
					bytesread += sizeof (dword) ;
					dword += (dword & 1) ;
					psf_binheader_readf (psf, "j", dword) ;
					bytesread += dword ;
					psf_log_printf (psf, "    *** %M : %d\n", chunk, dword) ;
					if (dword > length)
						return 0 ;
					break ;
			} ;

		switch (chunk)
		{	case ISFT_MARKER :
					psf_store_string (psf, SF_STR_SOFTWARE, psf->u.cbuf) ;
					break ;
			case ICOP_MARKER :
					psf_store_string (psf, SF_STR_COPYRIGHT, psf->u.cbuf) ;
					break ;
			case INAM_MARKER :
					psf_store_string (psf, SF_STR_TITLE, psf->u.cbuf) ;
					break ;
			case IART_MARKER :
					psf_store_string (psf, SF_STR_ARTIST, psf->u.cbuf) ;
					break ;
			case ICMT_MARKER :
					psf_store_string (psf, SF_STR_COMMENT, psf->u.cbuf) ;
					break ;
			case ICRD_MARKER :
					psf_store_string (psf, SF_STR_DATE, psf->u.cbuf) ;
					break ;
			} ;

		if (psf->logindex >= SIGNED_SIZEOF (psf->logbuffer) - 2)
			return SFE_LOG_OVERRUN ;
		} ;

	current_pos = psf_fseek (psf, 0, SEEK_CUR) - current_pos ;

	if (current_pos - 4 != length)
		psf_log_printf (psf, "**** Bad chunk length %d sbould be %D\n", length, current_pos - 4) ;

	return 0 ;
} /* wav_subchunk_parse */

static int
wav_read_smpl_chunk (SF_PRIVATE *psf, unsigned int chunklen)
{	unsigned int bytesread = 0, dword, sampler_data, loop_count ;
	int k ;

	chunklen += (chunklen & 1) ;

	bytesread += psf_binheader_readf (psf, "e4", &dword) ;
	psf_log_printf (psf, "  Manufacturer : %X\n", dword) ;

	bytesread += psf_binheader_readf (psf, "e4", &dword) ;
	psf_log_printf (psf, "  Product      : %u\n", dword) ;

	bytesread += psf_binheader_readf (psf, "e4", &dword) ;
	psf_log_printf (psf, "  Period       : %u nsec\n", dword) ;

	bytesread += psf_binheader_readf (psf, "e4", &dword) ;
	psf_log_printf (psf, "  Midi Note    : %u\n", dword) ;

	bytesread += psf_binheader_readf (psf, "e4", &dword) ;
	if (dword != 0)
	{	LSF_SNPRINTF (psf->u.cbuf, sizeof (psf->u.cbuf), "%f",
				 (1.0 * 0x80000000) / ((unsigned int) dword)) ;
		psf_log_printf (psf, "  Pitch Fract. : %s\n", psf->u.cbuf) ;
		}
	else
		psf_log_printf (psf, "  Pitch Fract. : 0\n") ;

	bytesread += psf_binheader_readf (psf, "e4", &dword) ;
	psf_log_printf (psf, "  SMPTE Format : %u\n", dword) ;

	bytesread += psf_binheader_readf (psf, "e4", &dword) ;
	LSF_SNPRINTF (psf->u.cbuf, sizeof (psf->u.cbuf), "%02d:%02d:%02d %02d",
		 (dword >> 24) & 0x7F, (dword >> 16) & 0x7F, (dword >> 8) & 0x7F, dword & 0x7F) ;
	psf_log_printf (psf, "  SMPTE Offset : %s\n", psf->u.cbuf) ;

	bytesread += psf_binheader_readf (psf, "e4", &loop_count) ;
	psf_log_printf (psf, "  Loop Count   : %u\n", loop_count) ;

	/* Sampler Data holds the number of data bytes after the CUE chunks which
	** is not actually CUE data. Display value after CUE data.
	*/
	bytesread += psf_binheader_readf (psf, "e4", &sampler_data) ;

	while (loop_count > 0 && chunklen - bytesread >= 24)
	{
		bytesread += psf_binheader_readf (psf, "e4", &dword) ;
		psf_log_printf (psf, "    Cue ID : %2u", dword) ;

		bytesread += psf_binheader_readf (psf, "e4", &dword) ;
		psf_log_printf (psf, "  Type : %2u", dword) ;

		bytesread += psf_binheader_readf (psf, "e4", &dword) ;
		psf_log_printf (psf, "  Start : %5u", dword) ;

		bytesread += psf_binheader_readf (psf, "e4", &dword) ;
		psf_log_printf (psf, "  End : %5u", dword) ;

		bytesread += psf_binheader_readf (psf, "e4", &dword) ;
		psf_log_printf (psf, "  Fraction : %5u", dword) ;

		bytesread += psf_binheader_readf (psf, "e4", &dword) ;
		psf_log_printf (psf, "  Count : %5u\n", dword) ;

		loop_count -- ;
		} ;

	if (chunklen - bytesread == 0)
	{	if (sampler_data != 0)
			psf_log_printf (psf, "  Sampler Data : %u (should be 0)\n", sampler_data) ;
		else
			psf_log_printf (psf, "  Sampler Data : %u\n", sampler_data) ;
		}
	else
	{	if (sampler_data != chunklen - bytesread)
		{	psf_log_printf (psf, "  Sampler Data : %u (should have been %u)\n", sampler_data, chunklen - bytesread) ;
			sampler_data = chunklen - bytesread ;
			}
		else
			psf_log_printf (psf, "  Sampler Data : %u\n", sampler_data) ;

		psf_log_printf (psf, "      ") ;
		for (k = 0 ; k < (int) sampler_data ; k++)
		{	char ch ;

			if (k > 0 && (k % 20) == 0)
				psf_log_printf (psf, "\n      ") ;

			bytesread += psf_binheader_readf (psf, "1", &ch) ;
			psf_log_printf (psf, "%02X ", ch & 0xFF) ;
			} ;

		psf_log_printf (psf, "\n") ;
		} ;

	return 0 ;
} /* wav_read_smpl_chunk */

/*
** The acid chunk goes a little something like this:
**
** 4 bytes          'acid'
** 4 bytes (int)     length of chunk starting at next byte
**
** 4 bytes (int)     type of file:
**        this appears to be a bit mask,however some combinations
**        are probably impossible and/or qualified as "errors"
**
**        0x01 On: One Shot         Off: Loop
**        0x02 On: Root note is Set Off: No root
**        0x04 On: Stretch is On,   Off: Strech is OFF
**        0x08 On: Disk Based       Off: Ram based
**        0x10 On: ??????????       Off: ????????? (Acidizer puts that ON)
**
** 2 bytes (short)      root note
**        if type 0x10 is OFF : [C,C#,(...),B] -> [0x30 to 0x3B]
**        if type 0x10 is ON  : [C,C#,(...),B] -> [0x3C to 0x47]
**         (both types fit on same MIDI pitch albeit different octaves, so who cares)
**
** 2 bytes (short)      ??? always set to 0x8000
** 4 bytes (float)      ??? seems to be always 0
** 4 bytes (int)        number of beats
** 2 bytes (short)      meter denominator   //always 4 in SF/ACID
** 2 bytes (short)      meter numerator     //always 4 in SF/ACID
**                      //are we sure about the order?? usually its num/denom
** 4 bytes (float)      tempo
**
*/

static int
wav_read_acid_chunk (SF_PRIVATE *psf, unsigned int chunklen)
{	unsigned int bytesread = 0 ;
	int	beats, flags ;
	short rootnote, q1, meter_denom, meter_numer ;
	float q2, tempo ;

	chunklen += (chunklen & 1) ;

	bytesread += psf_binheader_readf (psf, "e422f", &flags, &rootnote, &q1, &q2) ;

	LSF_SNPRINTF (psf->u.cbuf, sizeof (psf->u.cbuf), "%f", q2) ;

	psf_log_printf (psf, "  Flags     : 0x%04x (%s,%s,%s,%s,%s)\n", flags,
			(flags & 0x01) ? "OneShot" : "Loop",
			(flags & 0x02) ? "RootNoteValid" : "RootNoteInvalid",
			(flags & 0x04) ? "StretchOn" : "StretchOff",
			(flags & 0x08) ? "DiskBased" : "RAMBased",
			(flags & 0x10) ? "??On" : "??Off") ;

	psf_log_printf (psf, "  Root note : 0x%x\n  ????      : 0x%04x\n  ????      : %s\n",
				rootnote, q1, psf->u.cbuf) ;

	bytesread += psf_binheader_readf (psf, "e422f", &beats, &meter_denom, &meter_numer, &tempo) ;
	LSF_SNPRINTF (psf->u.cbuf, sizeof (psf->u.cbuf), "%f", tempo) ;
	psf_log_printf (psf, "  Beats     : %d\n  Meter     : %d/%d\n  Tempo     : %s\n",
				beats, meter_numer, meter_denom, psf->u.cbuf) ;

	psf_binheader_readf (psf, "j", chunklen - bytesread) ;

	if ((psf->loop_info = calloc (1, sizeof (SF_LOOP_INFO))) == NULL)
		return SFE_MALLOC_FAILED ;

	psf->loop_info->time_sig_num	= meter_numer ;
	psf->loop_info->time_sig_den	= meter_denom ;
	psf->loop_info->loop_mode		= (flags & 0x01) ? SF_LOOP_NONE : SF_LOOP_FORWARD ;
	psf->loop_info->num_beats		= beats ;
	psf->loop_info->bpm				= tempo ;
	psf->loop_info->root_key		= (flags & 0x02) ? rootnote : -1 ;

	return 0 ;
} /* wav_read_acid_chunk */

/*
** Do not edit or modify anything in this comment block.
** The arch-tag line is a file identity tag for the GNU Arch
** revision control system.
**
** arch-tag: 9c551689-a1d8-4905-9f56-26a204374f18
*/