Alexandre Lision | 7c6f4a6 | 2013-09-05 13:27:01 -0400 | [diff] [blame] | 1 | /* |
| 2 | ** Copyright (C) 2009-2011 Erik de Castro Lopo <erikd@mega-nerd.com> |
| 3 | ** |
| 4 | ** All rights reserved. |
| 5 | ** |
| 6 | ** Redistribution and use in source and binary forms, with or without |
| 7 | ** modification, are permitted provided that the following conditions are |
| 8 | ** met: |
| 9 | ** |
| 10 | ** * Redistributions of source code must retain the above copyright |
| 11 | ** notice, this list of conditions and the following disclaimer. |
| 12 | ** * Redistributions in binary form must reproduce the above copyright |
| 13 | ** notice, this list of conditions and the following disclaimer in |
| 14 | ** the documentation and/or other materials provided with the |
| 15 | ** distribution. |
| 16 | ** * Neither the author nor the names of any contributors may be used |
| 17 | ** to endorse or promote products derived from this software without |
| 18 | ** specific prior written permission. |
| 19 | ** |
| 20 | ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 22 | ** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 23 | ** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| 24 | ** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 25 | ** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 26 | ** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 27 | ** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 28 | ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 29 | ** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 30 | ** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | #include <stdio.h> |
| 34 | #include <stdlib.h> |
| 35 | #include <string.h> |
| 36 | #include <sndfile.h> |
| 37 | |
| 38 | #include "common.h" |
| 39 | |
| 40 | #define BUFFER_LEN 4096 |
| 41 | #define MAX_CHANNELS 16 |
| 42 | |
| 43 | |
| 44 | typedef struct |
| 45 | { SNDFILE * infile ; |
| 46 | SNDFILE * outfile [MAX_CHANNELS] ; |
| 47 | |
| 48 | union |
| 49 | { double d [MAX_CHANNELS * BUFFER_LEN] ; |
| 50 | int i [MAX_CHANNELS * BUFFER_LEN] ; |
| 51 | } din ; |
| 52 | |
| 53 | union |
| 54 | { double d [BUFFER_LEN] ; |
| 55 | int i [BUFFER_LEN] ; |
| 56 | } dout ; |
| 57 | |
| 58 | int channels ; |
| 59 | } STATE ; |
| 60 | |
| 61 | static void usage_exit (void) ; |
| 62 | |
| 63 | static void deinterleave_int (STATE * state) ; |
| 64 | static void deinterleave_double (STATE * state) ; |
| 65 | |
| 66 | int |
| 67 | main (int argc, char **argv) |
| 68 | { STATE state ; |
| 69 | SF_INFO sfinfo ; |
| 70 | char pathname [512], ext [32], *cptr ; |
| 71 | int ch, double_split ; |
| 72 | |
| 73 | if (argc != 2) |
| 74 | { if (argc != 1) |
| 75 | puts ("\nError : need a single input file.\n") ; |
| 76 | usage_exit () ; |
| 77 | } ; |
| 78 | |
| 79 | memset (&state, 0, sizeof (state)) ; |
| 80 | memset (&sfinfo, 0, sizeof (sfinfo)) ; |
| 81 | |
| 82 | if ((state.infile = sf_open (argv [1], SFM_READ, &sfinfo)) == NULL) |
| 83 | { printf ("\nError : Not able to open input file '%s'\n%s\n", argv [1], sf_strerror (NULL)) ; |
| 84 | exit (1) ; |
| 85 | } ; |
| 86 | |
| 87 | if (sfinfo.channels < 2) |
| 88 | { printf ("\nError : Input file '%s' only has one channel.\n", argv [1]) ; |
| 89 | exit (1) ; |
| 90 | } ; |
| 91 | |
| 92 | state.channels = sfinfo.channels ; |
| 93 | sfinfo.channels = 1 ; |
| 94 | |
| 95 | snprintf (pathname, sizeof (pathname), "%s", argv [1]) ; |
| 96 | if ((cptr = strrchr (pathname, '.')) == NULL) |
| 97 | ext [0] = 0 ; |
| 98 | else |
| 99 | { snprintf (ext, sizeof (ext), "%s", cptr) ; |
| 100 | cptr [0] = 0 ; |
| 101 | } ; |
| 102 | |
| 103 | printf ("Input file : %s\n", pathname) ; |
| 104 | puts ("Output files :") ; |
| 105 | |
| 106 | for (ch = 0 ; ch < state.channels ; ch++) |
| 107 | { char filename [520] ; |
| 108 | |
| 109 | snprintf (filename, sizeof (filename), "%s_%02d%s", pathname, ch, ext) ; |
| 110 | |
| 111 | if ((state.outfile [ch] = sf_open (filename, SFM_WRITE, &sfinfo)) == NULL) |
| 112 | { printf ("Not able to open output file '%s'\n%s\n", filename, sf_strerror (NULL)) ; |
| 113 | exit (1) ; |
| 114 | } ; |
| 115 | |
| 116 | printf (" %s\n", filename) ; |
| 117 | } ; |
| 118 | |
| 119 | switch (sfinfo.format & SF_FORMAT_SUBMASK) |
| 120 | { case SF_FORMAT_FLOAT : |
| 121 | case SF_FORMAT_DOUBLE : |
| 122 | case SF_FORMAT_VORBIS : |
| 123 | double_split = 1 ; |
| 124 | break ; |
| 125 | |
| 126 | default : |
| 127 | double_split = 0 ; |
| 128 | break ; |
| 129 | } ; |
| 130 | |
| 131 | if (double_split) |
| 132 | deinterleave_double (&state) ; |
| 133 | else |
| 134 | deinterleave_int (&state) ; |
| 135 | |
| 136 | sf_close (state.infile) ; |
| 137 | for (ch = 0 ; ch < MAX_CHANNELS ; ch++) |
| 138 | if (state.outfile [ch] != NULL) |
| 139 | sf_close (state.outfile [ch]) ; |
| 140 | |
| 141 | return 0 ; |
| 142 | } /* main */ |
| 143 | |
| 144 | /*------------------------------------------------------------------------------ |
| 145 | */ |
| 146 | |
| 147 | static void |
| 148 | usage_exit (void) |
| 149 | { puts ("\nUsage : sndfile-deinterleave <filename>\n") ; |
| 150 | puts ( |
| 151 | "Split a mutli-channel file into a set of mono files.\n" |
| 152 | "\n" |
| 153 | "If the input file is named 'a.wav', the output files will be named\n" |
| 154 | "a_00.wav, a_01.wav and so on.\n" |
| 155 | ) ; |
| 156 | printf ("Using %s.\n\n", sf_version_string ()) ; |
| 157 | exit (0) ; |
| 158 | } /* usage_exit */ |
| 159 | |
| 160 | static void |
| 161 | deinterleave_int (STATE * state) |
| 162 | { int read_len ; |
| 163 | int ch, k ; |
| 164 | |
| 165 | do |
| 166 | { read_len = sf_readf_int (state->infile, state->din.i, BUFFER_LEN) ; |
| 167 | |
| 168 | for (ch = 0 ; ch < state->channels ; ch ++) |
| 169 | { for (k = 0 ; k < read_len ; k++) |
| 170 | state->dout.i [k] = state->din.i [k * state->channels + ch] ; |
| 171 | sf_write_int (state->outfile [ch], state->dout.i, read_len) ; |
| 172 | } ; |
| 173 | } |
| 174 | while (read_len > 0) ; |
| 175 | |
| 176 | } /* deinterleave_int */ |
| 177 | |
| 178 | static void |
| 179 | deinterleave_double (STATE * state) |
| 180 | { int read_len ; |
| 181 | int ch, k ; |
| 182 | |
| 183 | do |
| 184 | { read_len = sf_readf_double (state->infile, state->din.d, BUFFER_LEN) ; |
| 185 | |
| 186 | for (ch = 0 ; ch < state->channels ; ch ++) |
| 187 | { for (k = 0 ; k < read_len ; k++) |
| 188 | state->dout.d [k] = state->din.d [k * state->channels + ch] ; |
| 189 | sf_write_double (state->outfile [ch], state->dout.d, read_len) ; |
| 190 | } ; |
| 191 | } |
| 192 | while (read_len > 0) ; |
| 193 | |
| 194 | } /* deinterleave_double */ |