diff src/libsndfile-1.0.25/programs/sndfile-interleave.c @ 85:545efbb81310

Import initial set of sources

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/libsndfile-1.0.25/programs/sndfile-interleave.c	Mon Mar 18 14:12:14 2013 +0000
@@ -0,0 +1,202 @@
+/*
+** Copyright (C) 2009-2011 Erik de Castro Lopo <[e-mail]>
+**
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in
+**       the documentation and/or other materials provided with the
+**       distribution.
+**     * Neither the author nor the names of any contributors may be used
+**       to endorse or promote products derived from this software without
+**       specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sndfile.h>
+
+#include "common.h"
+
+#define	BUFFER_LEN	4096
+#define	MAX_INPUTS	16
+
+
+typedef struct
+{	SNDFILE * infile [MAX_INPUTS] ;
+	SNDFILE * outfile ;
+
+	union
+	{	double	d [BUFFER_LEN] ;
+		int		i [BUFFER_LEN] ;
+	} din ;
+
+	union
+
+	{	double	d [MAX_INPUTS * BUFFER_LEN] ;
+		int		i [MAX_INPUTS * BUFFER_LEN] ;
+	} dout ;
+
+	int channels ;
+} STATE ;
+
+
+static void usage_exit (void) ;
+static void interleave_int (STATE * state) ;
+static void interleave_double (STATE * state) ;
+
+
+int
+main (int argc, char **argv)
+{	STATE state ;
+	SF_INFO sfinfo ;
+	int k, double_merge = 0 ;
+
+	if (argc < 5)
+	{	if (argc > 1)
+			puts ("\nError : need at least 2 input files.") ;
+		usage_exit () ;
+		} ;
+
+	if (strcmp (argv [argc - 2], "-o") != 0)
+	{	puts ("\nError : second last command line parameter should be '-o'.\n") ;
+		usage_exit () ;
+		} ;
+
+	if (argc - 3 > MAX_INPUTS)
+	{	printf ("\nError : Cannot handle more than %d input channels.\n\n", MAX_INPUTS) ;
+		exit (1) ;
+		} ;
+
+	memset (&state, 0, sizeof (state)) ;
+	memset (&sfinfo, 0, sizeof (sfinfo)) ;
+
+	for (k = 1 ; k < argc - 2 ; k++)
+	{
+		if ((state.infile [k - 1] = sf_open (argv [k], SFM_READ, &sfinfo)) == NULL)
+		{	printf ("\nError : Not able to open input file '%s'\n%s\n", argv [k], sf_strerror (NULL)) ;
+			exit (1) ;
+			} ;
+
+		if (sfinfo.channels != 1)
+		{	printf ("\bError : Input file '%s' should be mono (has %d channels).\n", argv [k], sfinfo.channels) ;
+			exit (1) ;
+			} ;
+
+		switch (sfinfo.format & SF_FORMAT_SUBMASK)
+		{	case SF_FORMAT_FLOAT :
+			case SF_FORMAT_DOUBLE :
+			case SF_FORMAT_VORBIS :
+				double_merge = 1 ;
+				break ;
+
+			default :
+				break ;
+			} ;
+
+		state.channels ++ ;
+		} ;
+
+	sfinfo.channels = state.channels ;
+	sfinfo.format = sfe_file_type_of_ext (argv [argc - 1], sfinfo.format) ;
+
+	if ((state.outfile = sf_open (argv [argc - 1], SFM_WRITE, &sfinfo)) == NULL)
+	{	printf ("Not able to open output file '%s'\n%s\n", argv [argc - 1], sf_strerror (NULL)) ;
+		exit (1) ;
+		} ;
+
+	if (double_merge)
+		interleave_double (&state) ;
+	else
+		interleave_int (&state) ;
+
+	for (k = 0 ; k < MAX_INPUTS ; k++)
+		if (state.infile [k] != NULL)
+			sf_close (state.infile [k]) ;
+	sf_close (state.outfile) ;
+
+	return 0 ;
+} /* main */
+
+/*------------------------------------------------------------------------------
+*/
+
+
+static void
+usage_exit (void)
+{	puts ("\nUsage : sndfile-interleave <input 1> <input 2> ... -o <output file>\n") ;
+	puts ("Merge two or more mono files into a single multi-channel file.\n") ;
+	printf ("Using %s.\n\n", sf_version_string ()) ;
+	exit (0) ;
+} /* usage_exit */
+
+
+static void
+interleave_int (STATE * state)
+{	int max_read_len, read_len ;
+	int ch, k ;
+
+	do
+	{	max_read_len = 0 ;
+
+		for (ch = 0 ; ch < state->channels ; ch ++)
+		{	read_len = sf_read_int (state->infile [ch], state->din.i, BUFFER_LEN) ;
+			if (read_len < BUFFER_LEN)
+				memset (state->din.i + read_len, 0, sizeof (state->din.i [0]) * (BUFFER_LEN - read_len)) ;
+
+			for (k = 0 ; k < read_len ; k++)
+				state->dout.i [k * state->channels + ch] = state->din.i [k] ;
+
+			max_read_len = MAX (max_read_len, read_len) ;
+			} ;
+
+		sf_writef_int (state->outfile, state->dout.i, max_read_len) ;
+		}
+	while (max_read_len > 0) ;
+
+} /* interleave_int */
+
+
+static void
+interleave_double (STATE * state)
+{	int max_read_len, read_len ;
+	int ch, k ;
+
+	do
+	{	max_read_len = 0 ;
+
+		for (ch = 0 ; ch < state->channels ; ch ++)
+		{	read_len = sf_read_double (state->infile [ch], state->din.d, BUFFER_LEN) ;
+			if (read_len < BUFFER_LEN)
+				memset (state->din.d + read_len, 0, sizeof (state->din.d [0]) * (BUFFER_LEN - read_len)) ;
+
+			for (k = 0 ; k < read_len ; k++)
+				state->dout.d [k * state->channels + ch] = state->din.d [k] ;
+
+			max_read_len = MAX (max_read_len, read_len) ;
+			} ;
+
+		sf_writef_double (state->outfile, state->dout.d, max_read_len) ;
+		}
+	while (max_read_len > 0) ;
+
+} /* interleave_double */