Tarball conversion

1 files changed, 204 insertions, 0 deletions

diff --git a/src/mpc2k.c b/src/mpc2k.c
new file mode 100644
index 0000000..0170f7c
--- /dev/null
+++ b/src/mpc2k.c
@@ -0,0 +1,204 @@
+/*
+** Copyright (C) 2008-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** 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 "sfconfig.h"
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "sndfile.h"
+#include "sfendian.h"
+#include "common.h"
+
+/*
+**	Info from Olivier Tristan <o.tristan@ultimatesoundbank.com>
+**
+**	HEADER
+**	2 magic bytes: 1 and 4.
+**	17 char for the name of the sample.
+**	3 bytes: level, tune and channels (0 for channels is mono while 1 is stereo)
+**	4 uint32: sampleStart, loopEnd, sampleFrames and loopLength
+**	1 byte: loopMode (0 no loop, 1 forward looping)
+**	1 byte: number of beat in loop
+**	1 uint16: sampleRate
+**
+**	DATA
+**	Data are always non compressed 16 bits interleaved
+*/
+
+#define HEADER_LENGTH		42	/* Sum of above data fields. */
+#define HEADER_NAME_LEN		17	/* Length of name string. */
+
+#define	SFE_MPC_NO_MARKER	666
+
+/*------------------------------------------------------------------------------
+** Private static functions.
+*/
+
+static	int		mpc2k_close		(SF_PRIVATE *psf) ;
+
+static int		mpc2k_write_header (SF_PRIVATE *psf, int calc_length) ;
+static int		mpc2k_read_header (SF_PRIVATE *psf) ;
+
+/*------------------------------------------------------------------------------
+** Public function.
+*/
+
+int
+mpc2k_open	(SF_PRIVATE *psf)
+{	int		error = 0 ;
+
+	if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0))
+	{	if ((error = mpc2k_read_header (psf)))
+			return error ;
+		} ;
+
+	if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_MPC2K)
+		return	SFE_BAD_OPEN_FORMAT ;
+
+	if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
+	{	if (mpc2k_write_header (psf, SF_FALSE))
+			return psf->error ;
+
+		psf->write_header = mpc2k_write_header ;
+		} ;
+
+	psf->container_close = mpc2k_close ;
+
+	psf->blockwidth = psf->bytewidth * psf->sf.channels ;
+
+	error = pcm_init (psf) ;
+
+	return error ;
+} /* mpc2k_open */
+
+/*------------------------------------------------------------------------------
+*/
+
+static int
+mpc2k_close	(SF_PRIVATE *psf)
+{
+	if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
+		mpc2k_write_header (psf, SF_TRUE) ;
+
+	return 0 ;
+} /* mpc2k_close */
+
+static int
+mpc2k_write_header (SF_PRIVATE *psf, int calc_length)
+{	char sample_name [HEADER_NAME_LEN + 1] ;
+	sf_count_t	current ;
+
+	if (psf->pipeoffset > 0)
+		return 0 ;
+
+	current = psf_ftell (psf) ;
+
+	if (calc_length)
+	{	psf->filelength = psf_get_filelen (psf) ;
+
+		psf->dataoffset = HEADER_LENGTH ;
+		psf->datalength = psf->filelength - psf->dataoffset ;
+
+		psf->sf.frames = psf->datalength / (psf->bytewidth * psf->sf.channels) ;
+		} ;
+
+	/* Reset the current header length to zero. */
+	psf->header [0] = 0 ;
+	psf->headindex = 0 ;
+
+	/*
+	** Only attempt to seek if we are not writng to a pipe. If we are
+	** writing to a pipe we shouldn't be here anyway.
+	*/
+	if (psf->is_pipe == SF_FALSE)
+		psf_fseek (psf, 0, SEEK_SET) ;
+
+	snprintf (sample_name, sizeof (sample_name), "%s                    ", psf->file.name.c) ;
+
+	psf_binheader_writef (psf, "e11b", 1, 4, sample_name, make_size_t (HEADER_NAME_LEN)) ;
+	psf_binheader_writef (psf, "e111", 100, 0, (psf->sf.channels - 1) & 1) ;
+	psf_binheader_writef (psf, "et4888", 0, psf->sf.frames, psf->sf.frames, psf->sf.frames) ;
+	psf_binheader_writef (psf, "e112", 0, 1, (uint16_t) psf->sf.samplerate) ;
+
+	/* Always 16 bit little endian data. */
+	psf->bytewidth = 2 ;
+	psf->endian = SF_ENDIAN_LITTLE ;
+
+	psf_fwrite (psf->header, psf->headindex, 1, psf) ;
+
+	if (psf->error)
+		return psf->error ;
+
+	psf->dataoffset = psf->headindex ;
+
+	if (current > 0)
+		psf_fseek (psf, current, SEEK_SET) ;
+
+	return psf->error ;
+} /* mpc2k_write_header */
+
+static int
+mpc2k_read_header (SF_PRIVATE *psf)
+{	char sample_name [HEADER_NAME_LEN + 1] ;
+	unsigned char bytes [4] ;
+	uint32_t sample_start, loop_end, sample_frames, loop_length ;
+	uint16_t sample_rate ;
+
+	psf_binheader_readf (psf, "pebb", 0, bytes, 2, sample_name, make_size_t (HEADER_NAME_LEN)) ;
+
+	if (bytes [0] != 1 || bytes [1] != 4)
+		return SFE_MPC_NO_MARKER ;
+
+	sample_name [HEADER_NAME_LEN] = 0 ;
+
+	psf_log_printf (psf, "MPC2000\n  Name         : %s\n", sample_name) ;
+
+	psf_binheader_readf (psf, "eb4444", bytes, 3, &sample_start, &loop_end, &sample_frames, &loop_length) ;
+
+	psf->sf.channels = bytes [2] ? 2 : 1 ;
+
+	psf_log_printf (psf, "  Level        : %d\n  Tune         : %d\n  Stereo       : %s\n", bytes [0], bytes [1], bytes [2] ? "Yes" : "No") ;
+
+	psf_log_printf (psf, "  Sample start : %d\n  Loop end     : %d\n  Frames       : %d\n  Length       : %d\n", sample_start, loop_end, sample_frames, loop_length) ;
+
+	psf_binheader_readf (psf, "eb2", bytes, 2, &sample_rate) ;
+
+	psf_log_printf (psf, "  Loop mode    : %s\n  Beats        : %d\n  Sample rate  : %d\nEnd\n", bytes [0] ? "None" : "Fwd", bytes [1], sample_rate) ;
+
+	psf->sf.samplerate = sample_rate ;
+
+	psf->sf.format = SF_FORMAT_MPC2K | SF_FORMAT_PCM_16 ;
+
+	psf->dataoffset = psf_ftell (psf) ;
+
+	/* Always 16 bit little endian data. */
+	psf->bytewidth = 2 ;
+	psf->endian = SF_ENDIAN_LITTLE ;
+
+	psf->datalength = psf->filelength - psf->dataoffset ;
+	psf->blockwidth = psf->sf.channels * psf->bytewidth ;
+	psf->sf.frames = psf->datalength / psf->blockwidth ;
+
+	psf->sf.frames = (psf->filelength - psf->dataoffset) / psf->blockwidth ;
+
+	return 0 ;
+} /* mpc2k_read_header */
+