cannam@125: /* cannam@125: ** Copyright (C) 2009-2014 Erik de Castro Lopo cannam@125: ** cannam@125: ** All rights reserved. cannam@125: ** cannam@125: ** Redistribution and use in source and binary forms, with or without cannam@125: ** modification, are permitted provided that the following conditions are cannam@125: ** met: cannam@125: ** cannam@125: ** * Redistributions of source code must retain the above copyright cannam@125: ** notice, this list of conditions and the following disclaimer. cannam@125: ** * Redistributions in binary form must reproduce the above copyright cannam@125: ** notice, this list of conditions and the following disclaimer in cannam@125: ** the documentation and/or other materials provided with the cannam@125: ** distribution. cannam@125: ** * Neither the author nor the names of any contributors may be used cannam@125: ** to endorse or promote products derived from this software without cannam@125: ** specific prior written permission. cannam@125: ** cannam@125: ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS cannam@125: ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED cannam@125: ** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR cannam@125: ** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR cannam@125: ** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, cannam@125: ** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, cannam@125: ** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; cannam@125: ** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, cannam@125: ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR cannam@125: ** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF cannam@125: ** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. cannam@125: */ cannam@125: cannam@125: #include cannam@125: #include cannam@125: #include cannam@125: #include cannam@125: cannam@125: #include "common.h" cannam@125: cannam@125: #define BUFFER_LEN 4096 cannam@125: #define MAX_CHANNELS 16 cannam@125: cannam@125: cannam@125: typedef struct cannam@125: { SNDFILE * infile ; cannam@125: SNDFILE * outfile [MAX_CHANNELS] ; cannam@125: cannam@125: union cannam@125: { double d [MAX_CHANNELS * BUFFER_LEN] ; cannam@125: int i [MAX_CHANNELS * BUFFER_LEN] ; cannam@125: } din ; cannam@125: cannam@125: union cannam@125: { double d [BUFFER_LEN] ; cannam@125: int i [BUFFER_LEN] ; cannam@125: } dout ; cannam@125: cannam@125: int channels ; cannam@125: } STATE ; cannam@125: cannam@125: static void usage_exit (void) ; cannam@125: cannam@125: static void deinterleave_int (STATE * state) ; cannam@125: static void deinterleave_double (STATE * state) ; cannam@125: cannam@125: int cannam@125: main (int argc, char **argv) cannam@125: { STATE state ; cannam@125: SF_INFO sfinfo ; cannam@125: char pathname [512], ext [32], *cptr ; cannam@125: int ch, double_split ; cannam@125: cannam@125: if (argc != 2) cannam@125: { if (argc != 1) cannam@125: puts ("\nError : need a single input file.\n") ; cannam@125: usage_exit () ; cannam@125: } ; cannam@125: cannam@125: memset (&state, 0, sizeof (state)) ; cannam@125: memset (&sfinfo, 0, sizeof (sfinfo)) ; cannam@125: cannam@125: if ((state.infile = sf_open (argv [1], SFM_READ, &sfinfo)) == NULL) cannam@125: { printf ("\nError : Not able to open input file '%s'\n%s\n", argv [1], sf_strerror (NULL)) ; cannam@125: exit (1) ; cannam@125: } ; cannam@125: cannam@125: if (sfinfo.channels < 2) cannam@125: { printf ("\nError : Input file '%s' only has one channel.\n", argv [1]) ; cannam@125: exit (1) ; cannam@125: } ; cannam@125: cannam@125: state.channels = sfinfo.channels ; cannam@125: sfinfo.channels = 1 ; cannam@125: cannam@125: snprintf (pathname, sizeof (pathname), "%s", argv [1]) ; cannam@125: if ((cptr = strrchr (pathname, '.')) == NULL) cannam@125: ext [0] = 0 ; cannam@125: else cannam@125: { snprintf (ext, sizeof (ext), "%s", cptr) ; cannam@125: cptr [0] = 0 ; cannam@125: } ; cannam@125: cannam@125: printf ("Input file : %s\n", pathname) ; cannam@125: puts ("Output files :") ; cannam@125: cannam@125: for (ch = 0 ; ch < state.channels ; ch++) cannam@125: { char filename [520] ; cannam@125: cannam@125: snprintf (filename, sizeof (filename), "%s_%02d%s", pathname, ch, ext) ; cannam@125: cannam@125: if ((state.outfile [ch] = sf_open (filename, SFM_WRITE, &sfinfo)) == NULL) cannam@125: { printf ("Not able to open output file '%s'\n%s\n", filename, sf_strerror (NULL)) ; cannam@125: exit (1) ; cannam@125: } ; cannam@125: cannam@125: printf (" %s\n", filename) ; cannam@125: } ; cannam@125: cannam@125: switch (sfinfo.format & SF_FORMAT_SUBMASK) cannam@125: { case SF_FORMAT_FLOAT : cannam@125: case SF_FORMAT_DOUBLE : cannam@125: case SF_FORMAT_VORBIS : cannam@125: double_split = 1 ; cannam@125: break ; cannam@125: cannam@125: default : cannam@125: double_split = 0 ; cannam@125: break ; cannam@125: } ; cannam@125: cannam@125: if (double_split) cannam@125: deinterleave_double (&state) ; cannam@125: else cannam@125: deinterleave_int (&state) ; cannam@125: cannam@125: sf_close (state.infile) ; cannam@125: for (ch = 0 ; ch < MAX_CHANNELS ; ch++) cannam@125: if (state.outfile [ch] != NULL) cannam@125: sf_close (state.outfile [ch]) ; cannam@125: cannam@125: return 0 ; cannam@125: } /* main */ cannam@125: cannam@125: /*------------------------------------------------------------------------------ cannam@125: */ cannam@125: cannam@125: static void cannam@125: usage_exit (void) cannam@125: { puts ("\nUsage : sndfile-deinterleave \n") ; cannam@125: puts ( cannam@125: "Split a mutli-channel file into a set of mono files.\n" cannam@125: "\n" cannam@125: "If the input file is named 'a.wav', the output files will be named\n" cannam@125: "a_00.wav, a_01.wav and so on.\n" cannam@125: ) ; cannam@125: printf ("Using %s.\n\n", sf_version_string ()) ; cannam@125: exit (1) ; cannam@125: } /* usage_exit */ cannam@125: cannam@125: static void cannam@125: deinterleave_int (STATE * state) cannam@125: { int read_len ; cannam@125: int ch, k ; cannam@125: cannam@125: do cannam@125: { read_len = sf_readf_int (state->infile, state->din.i, BUFFER_LEN) ; cannam@125: cannam@125: for (ch = 0 ; ch < state->channels ; ch ++) cannam@125: { for (k = 0 ; k < read_len ; k++) cannam@125: state->dout.i [k] = state->din.i [k * state->channels + ch] ; cannam@125: sf_write_int (state->outfile [ch], state->dout.i, read_len) ; cannam@125: } ; cannam@125: } cannam@125: while (read_len > 0) ; cannam@125: cannam@125: } /* deinterleave_int */ cannam@125: cannam@125: static void cannam@125: deinterleave_double (STATE * state) cannam@125: { int read_len ; cannam@125: int ch, k ; cannam@125: cannam@125: do cannam@125: { read_len = sf_readf_double (state->infile, state->din.d, BUFFER_LEN) ; cannam@125: cannam@125: for (ch = 0 ; ch < state->channels ; ch ++) cannam@125: { for (k = 0 ; k < read_len ; k++) cannam@125: state->dout.d [k] = state->din.d [k * state->channels + ch] ; cannam@125: sf_write_double (state->outfile [ch], state->dout.d, read_len) ; cannam@125: } ; cannam@125: } cannam@125: while (read_len > 0) ; cannam@125: cannam@125: } /* deinterleave_double */