aiff.c

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/*
** Copyright (C) 1999-2004 Erik de Castro Lopo <[e-mail]>
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU Lesser General Public License as published by
** the Free Software Foundation; either version 2.1 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU Lesser General Public License for more details.
**
** You should have received a copy of the GNU Lesser General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/

#include "config.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <ctype.h>

#include "sndfile.h"
#include "sfendian.h"
#include "common.h"

/*------------------------------------------------------------------------------
 * Macros to handle big/little endian issues.
 */

#define FORM_MARKER	(MAKE_MARKER ('F', 'O', 'R', 'M'))
#define AIFF_MARKER	(MAKE_MARKER ('A', 'I', 'F', 'F'))
#define AIFC_MARKER	(MAKE_MARKER ('A', 'I', 'F', 'C'))
#define COMM_MARKER	(MAKE_MARKER ('C', 'O', 'M', 'M'))
#define SSND_MARKER	(MAKE_MARKER ('S', 'S', 'N', 'D'))
#define MARK_MARKER	(MAKE_MARKER ('M', 'A', 'R', 'K'))
#define INST_MARKER	(MAKE_MARKER ('I', 'N', 'S', 'T'))
#define APPL_MARKER	(MAKE_MARKER ('A', 'P', 'P', 'L'))

#define c_MARKER	(MAKE_MARKER ('(', 'c', ')', ' '))
#define NAME_MARKER	(MAKE_MARKER ('N', 'A', 'M', 'E'))
#define AUTH_MARKER	(MAKE_MARKER ('A', 'U', 'T', 'H'))
#define ANNO_MARKER	(MAKE_MARKER ('A', 'N', 'N', 'O'))
#define COMT_MARKER	(MAKE_MARKER ('C', 'O', 'M', 'T'))
#define FVER_MARKER	(MAKE_MARKER ('F', 'V', 'E', 'R'))
#define SFX_MARKER	(MAKE_MARKER ('S', 'F', 'X', '!'))

#define PEAK_MARKER	(MAKE_MARKER ('P', 'E', 'A', 'K'))
#define basc_MARKER	(MAKE_MARKER ('b', 'a', 's', 'c'))

/* Supported AIFC encodings.*/
#define NONE_MARKER	(MAKE_MARKER ('N', 'O', 'N', 'E'))
#define sowt_MARKER	(MAKE_MARKER ('s', 'o', 'w', 't'))
#define twos_MARKER	(MAKE_MARKER ('t', 'w', 'o', 's'))
#define raw_MARKER	(MAKE_MARKER ('r', 'a', 'w', ' '))
#define in32_MARKER	(MAKE_MARKER ('i', 'n', '3', '2'))
#define ni32_MARKER	(MAKE_MARKER ('2', '3', 'n', 'i'))

#define fl32_MARKER	(MAKE_MARKER ('f', 'l', '3', '2'))
#define FL32_MARKER	(MAKE_MARKER ('F', 'L', '3', '2'))
#define fl64_MARKER	(MAKE_MARKER ('f', 'l', '6', '4'))
#define FL64_MARKER	(MAKE_MARKER ('F', 'L', '6', '4'))

#define ulaw_MARKER	(MAKE_MARKER ('u', 'l', 'a', 'w'))
#define ULAW_MARKER	(MAKE_MARKER ('U', 'L', 'A', 'W'))
#define alaw_MARKER	(MAKE_MARKER ('a', 'l', 'a', 'w'))
#define ALAW_MARKER	(MAKE_MARKER ('A', 'L', 'A', 'W'))

#define DWVW_MARKER	(MAKE_MARKER ('D', 'W', 'V', 'W'))
#define GSM_MARKER	(MAKE_MARKER ('G', 'S', 'M', ' '))
#define ima4_MARKER	(MAKE_MARKER ('i', 'm', 'a', '4'))

/* Unsupported AIFC encodings.*/

#define MAC3_MARKER	(MAKE_MARKER ('M', 'A', 'C', '3'))
#define MAC6_MARKER	(MAKE_MARKER ('M', 'A', 'C', '6'))
#define ADP4_MARKER	(MAKE_MARKER ('A', 'D', 'P', '4'))

/* Predfined chunk sizes. */
#define SIZEOF_AIFF_COMM		18
#define SIZEOF_AIFC_COMM_MIN	22
#define SIZEOF_AIFC_COMM		24
#define SIZEOF_SSND_CHUNK		8
#define SIZEOF_INST_CHUNK		20

/* Is it constant? */
#define SIZEOF_basc_CHUNK				0x54
#define SIZEOF_basc_CHUNK_PADDING		66

/* AIFC/IMA4 defines. */
#define AIFC_IMA4_BLOCK_LEN				34
#define	AIFC_IMA4_SAMPLES_PER_BLOCK		64

/*------------------------------------------------------------------------------
 * Typedefs for file chunks.
 */

enum
{	HAVE_FORM	= 0x01,
	HAVE_AIFF	= 0x02,
	HAVE_COMM	= 0x04,
	HAVE_SSND	= 0x08
} ;

typedef struct
{	unsigned int	size ;
	short			numChannels ;
	unsigned int	numSampleFrames ;
	short			sampleSize ;
	unsigned char	sampleRate [10] ;
	unsigned int	encoding ;
	char			zero_bytes [2] ;
} COMM_CHUNK ;

typedef struct
{	unsigned int	offset ;
	unsigned int	blocksize ;
} SSND_CHUNK ;

typedef struct
{	short			playMode ;
    unsigned short	beginLoop ;
	unsigned short	endLoop ;
} INST_LOOP ;

typedef struct
{	char		baseNote ;		/* all notes are MIDI note numbers */
	char		detune ;		/* cents off, only -50 to +50 are significant */
	char		lowNote ;
	char		highNote ;
	char		lowVelocity ;	/* 1 to 127 */
	char		highVelocity ;	/* 1 to 127 */
	short		gain ;			/* in dB, 0 is normal */
	INST_LOOP	sustain_loop ;
	INST_LOOP	release_loop ;
} INST_CHUNK ;


enum
{	basc_SCALE_MINOR = 1,
	basc_SCALE_MAJOR,
	basc_SCALE_NEITHER,
	basc_SCALE_BOTH,
} ;

enum
{	basc_TYPE_LOOP = 0,
	basc_TYPE_ONE_SHOT,
} ;


typedef struct
{	unsigned int	version ;
	unsigned int	numBeats ;
	unsigned short	rootNote ;
	unsigned short	scaleType ;
	unsigned short	sigNumerator ;
	unsigned short	sigDenominator ;
	unsigned short	loopType ;
	char			zero_bytes [SIZEOF_basc_CHUNK_PADDING] ;
} basc_CHUNK ;

/*------------------------------------------------------------------------------
 * Private static functions.
 */

static int	aiff_close	(SF_PRIVATE *psf) ;

static int	tenbytefloat2int (unsigned char *bytes) ;
static void	uint2tenbytefloat (unsigned int num, unsigned char *bytes) ;

static int	aiff_read_comm_chunk (SF_PRIVATE *psf, COMM_CHUNK *comm_fmt) ;

static int	aiff_read_header (SF_PRIVATE *psf, COMM_CHUNK *comm_fmt) ;

static int	aiff_write_header (SF_PRIVATE *psf, int calc_length) ;
static int	aiff_write_tailer (SF_PRIVATE *psf) ;
static void aiff_write_strings (SF_PRIVATE *psf, int location) ;

static int	aiff_command (SF_PRIVATE *psf, int command, void *data, int datasize) ;

static const char *get_loop_mode_str (short mode) ;

static int aiff_read_basc_chunk (SF_PRIVATE * psf) ;

/*------------------------------------------------------------------------------
** Public function.
*/

int
aiff_open	(SF_PRIVATE *psf)
{	COMM_CHUNK comm_fmt ;
	int error, subformat ;

	subformat = psf->sf.format & SF_FORMAT_SUBMASK ;

	if (psf->mode == SFM_READ || (psf->mode == SFM_RDWR && psf->filelength > 0))
	{	if ((error = aiff_read_header (psf, &comm_fmt)))
			return error ;

		psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
		} ;

	if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR)
	{	if (psf->is_pipe)
			return SFE_NO_PIPE_WRITE ;

		if ((psf->sf.format & SF_FORMAT_TYPEMASK) != SF_FORMAT_AIFF)
			return	SFE_BAD_OPEN_FORMAT ;

		if (psf->mode == SFM_WRITE && (subformat == SF_FORMAT_FLOAT || subformat == SF_FORMAT_DOUBLE))
		{	psf->pchunk = calloc (1, sizeof (PEAK_CHUNK) * psf->sf.channels * sizeof (PEAK_POS)) ;
			if (psf->pchunk == NULL)
				return SFE_MALLOC_FAILED ;
			psf->has_peak = SF_TRUE ;
			psf->peak_loc = SF_PEAK_START ;
			} ;

		if (psf->mode != SFM_RDWR || psf->filelength < 40)
		{	psf->filelength = 0 ;
			psf->datalength = 0 ;
			psf->dataoffset = 0 ;
			psf->sf.frames = 0 ;
			} ;

		psf->str_flags = SF_STR_ALLOW_START | SF_STR_ALLOW_END ;

		if ((error = aiff_write_header (psf, SF_FALSE)))
			return error ;

		psf->write_header = aiff_write_header ;
		} ;

	psf->close = aiff_close ;
	psf->command = aiff_command ;

	psf->blockwidth = psf->sf.channels * psf->bytewidth ;

	switch (psf->sf.format & SF_FORMAT_SUBMASK)
	{	case SF_FORMAT_PCM_U8 :
				error = pcm_init (psf) ;
				break ;

		case SF_FORMAT_PCM_S8 :
				error = pcm_init (psf) ;
				break ;

		case SF_FORMAT_PCM_16 :
		case SF_FORMAT_PCM_24 :
		case SF_FORMAT_PCM_32 :
				error = pcm_init (psf) ;
				break ;

		case SF_FORMAT_ULAW :
				error = ulaw_init (psf) ;
				break ;

		case SF_FORMAT_ALAW :
				error = alaw_init (psf) ;
				break ;

		/* Lite remove start */
		case SF_FORMAT_FLOAT :
				error = float32_init (psf) ;
				break ;

		case SF_FORMAT_DOUBLE :
				error = double64_init (psf) ;
				break ;

		case SF_FORMAT_DWVW_12 :
				error = dwvw_init (psf, 12) ;
				break ;

		case SF_FORMAT_DWVW_16 :
				error = dwvw_init (psf, 16) ;
				break ;

		case SF_FORMAT_DWVW_24 :
				error = dwvw_init (psf, 24) ;
				break ;

		case SF_FORMAT_DWVW_N :
				if (psf->mode != SFM_READ)
				{	error = SFE_DWVW_BAD_BITWIDTH ;
					break ;
					} ;
				if (comm_fmt.sampleSize >= 8 && comm_fmt.sampleSize < 24)
				{	error = dwvw_init (psf, comm_fmt.sampleSize) ;
					psf->sf.frames = comm_fmt.numSampleFrames ;
					break ;
					} ;
				psf_log_printf (psf, "AIFC/DWVW : Bad bitwidth %d\n", comm_fmt.sampleSize) ;
				error = SFE_DWVW_BAD_BITWIDTH ;
				break ;

		case SF_FORMAT_IMA_ADPCM :
				/*
				**	IMA ADPCM encoded AIFF files always have a block length
				**	of 34 which decodes to 64 samples.
				*/
				error = aiff_ima_init (psf, AIFC_IMA4_BLOCK_LEN, AIFC_IMA4_SAMPLES_PER_BLOCK) ;
				break ;
		/* Lite remove end */

		case SF_FORMAT_GSM610 :
				error = gsm610_init (psf) ;
				break ;

		default : return SFE_UNIMPLEMENTED ;
		} ;

	if (psf->mode == SFM_READ)
		psf->blockwidth = psf->sf.channels * psf->bytewidth ;

	return error ;
} /* aiff_open */

/*==========================================================================================
** Private functions.
*/

static int
aiff_read_header (SF_PRIVATE *psf, COMM_CHUNK *comm_fmt)
{	SSND_CHUNK	ssnd_fmt ;
	int			marker, dword, bytesread, k ;
	int			FORMsize, SSNDsize ;
	int			filetype, found_chunk = 0, done = 0, error = 0 ;
	char		*cptr, byte ;

	/* Set position to start of file to begin reading header. */
	psf_binheader_readf (psf, "p", 0) ;

	memset (comm_fmt, 0, sizeof (COMM_CHUNK)) ;

	/* Until recently AIF* file were all BIG endian. */
	psf->endian = SF_ENDIAN_BIG ;

	/* 	AIFF files can apparently have their chunks in any order. However, they
	**	must have a FORM chunk. Approach here is to read all the chunks one by
	**  one and then check for the mandatory chunks at the end.
	*/
	while (! done)
	{	psf_binheader_readf (psf, "m", &marker) ;

		if (psf->mode == SFM_RDWR && (found_chunk & HAVE_SSND))
			return SFE_AIFF_RW_SSND_NOT_LAST ;

		switch (marker)
		{	case FORM_MARKER :
					if (found_chunk)
						return SFE_AIFF_NO_FORM ;

					psf_binheader_readf (psf, "E4", &FORMsize) ;

					if (psf->fileoffset > 0 && psf->filelength > FORMsize + 8)
					{	/* Set file length. */
						psf->filelength = FORMsize + 8 ;
						psf_log_printf (psf, "FORM : %u\n", FORMsize) ;
						}
					else if (FORMsize != psf->filelength - 2 * SIGNED_SIZEOF (dword))
					{	dword = psf->filelength - 2 * sizeof (dword) ;
						psf_log_printf (psf, "FORM : %u (should be %u)\n", FORMsize, dword) ;
						FORMsize = dword ;
						}
					else
						psf_log_printf (psf, "FORM : %u\n", FORMsize) ;
					found_chunk |= HAVE_FORM ;
					break ;

			case AIFC_MARKER :
			case AIFF_MARKER :
					if (! (found_chunk & HAVE_FORM))
						return SFE_AIFF_AIFF_NO_FORM ;
					filetype = marker ;
					psf_log_printf (psf, " %M\n", marker) ;
					found_chunk |= HAVE_AIFF ;
					break ;

			case COMM_MARKER :
					error = aiff_read_comm_chunk (psf, comm_fmt) ;

					psf->sf.samplerate 	= tenbytefloat2int (comm_fmt->sampleRate) ;
					psf->sf.frames 	= comm_fmt->numSampleFrames ;
					psf->sf.channels 	= comm_fmt->numChannels ;
					psf->bytewidth 		= BITWIDTH2BYTES (comm_fmt->sampleSize) ;

					if (error)
						return error ;

					found_chunk |= HAVE_COMM ;
					break ;

			case PEAK_MARKER :
					/* Must have COMM chunk before PEAK chunk. */
					if ((found_chunk & (HAVE_FORM | HAVE_AIFF | HAVE_COMM)) != (HAVE_FORM | HAVE_AIFF | HAVE_COMM))
						return SFE_AIFF_PEAK_B4_COMM ;

					psf_binheader_readf (psf, "E4", &dword) ;

					psf_log_printf (psf, "%M : %d\n", marker, dword) ;
					if (dword != SIGNED_SIZEOF (PEAK_CHUNK) + psf->sf.channels * SIGNED_SIZEOF (PEAK_POS))
					{	psf_binheader_readf (psf, "j", dword) ;
						psf_log_printf (psf, "*** File PEAK chunk bigger than sizeof (PEAK_CHUNK).\n") ;
						return SFE_WAV_BAD_PEAK ;
						} ;

					psf->pchunk = calloc (1, sizeof (PEAK_CHUNK) * psf->sf.channels * sizeof (PEAK_POS)) ;
					if (psf->pchunk == NULL)
						return SFE_MALLOC_FAILED ;

					/* read in rest of PEAK chunk. */
					psf_binheader_readf (psf, "E44", &(psf->pchunk->version), &(psf->pchunk->timestamp)) ;

					if (psf->pchunk->version != 1)
						psf_log_printf (psf, "  version    : %d *** (should be version 1)\n", psf->pchunk->version) ;
					else
						psf_log_printf (psf, "  version    : %d\n", psf->pchunk->version) ;

					psf_log_printf (psf, "  time stamp : %d\n", psf->pchunk->timestamp) ;
					psf_log_printf (psf, "    Ch   Position       Value\n") ;

					cptr = psf->u.scbuf ;
					for (dword = 0 ; dword < psf->sf.channels ; dword++)
					{	psf_binheader_readf (psf, "Ef4", &(psf->pchunk->peaks [dword].value),
														&(psf->pchunk->peaks [dword].position)) ;

						LSF_SNPRINTF (cptr, sizeof (psf->u.scbuf), "    %2d   %-12d   %g\n",
								dword, psf->pchunk->peaks [dword].position, psf->pchunk->peaks [dword].value) ;
						cptr [sizeof (psf->u.scbuf) - 1] = 0 ;
						psf_log_printf (psf, cptr) ;
						} ;

					psf->has_peak = SF_TRUE ; /* Found PEAK chunk. */
					break ;

			case SSND_MARKER :
					psf_binheader_readf (psf, "E444", &SSNDsize, &(ssnd_fmt.offset), &(ssnd_fmt.blocksize)) ;

					psf->datalength = SSNDsize - sizeof (ssnd_fmt) ;
					psf->dataoffset = psf_ftell (psf) ;

					if (psf->datalength > psf->filelength - psf->dataoffset || psf->datalength < 0)
					{	psf_log_printf (psf, " SSND : %u (should be %D)\n", SSNDsize, psf->filelength - psf->dataoffset + sizeof (SSND_CHUNK)) ;
						psf->datalength = psf->filelength - psf->dataoffset ;