| 1 | /* |
| 2 | * This file is part of DisOrder. |
| 3 | * Copyright (C) 2009 Richard Kettlewell |
| 4 | * |
| 5 | * This program is free software: you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation, either version 3 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | */ |
| 18 | /** @file clients/resample.c |
| 19 | * @brief Audio resampler |
| 20 | */ |
| 21 | #include "common.h" |
| 22 | |
| 23 | #include <unistd.h> |
| 24 | #include <locale.h> |
| 25 | #include <errno.h> |
| 26 | #include <getopt.h> |
| 27 | |
| 28 | #include "resample.h" |
| 29 | #include "mem.h" |
| 30 | #include "syscalls.h" |
| 31 | #include "log.h" |
| 32 | |
| 33 | static int input_bits = 16; |
| 34 | static int input_channels = 2; |
| 35 | static int input_rate = 44100; |
| 36 | static int input_signed = 1; |
| 37 | static int input_endian = ENDIAN_NATIVE; |
| 38 | static int output_bits = 16; |
| 39 | static int output_channels = 2; |
| 40 | static int output_rate = 44100; |
| 41 | static int output_signed = 1; |
| 42 | static int output_endian = ENDIAN_NATIVE; |
| 43 | |
| 44 | static const struct option options[] = { |
| 45 | { "help", no_argument, 0, 'h' }, |
| 46 | { "input-bits", required_argument, 0, 'b' }, |
| 47 | { "input-channels", required_argument, 0, 'c' }, |
| 48 | { "input-rate", required_argument, 0, 'r' }, |
| 49 | { "input-signed", no_argument, 0, 's' }, |
| 50 | { "input-unsigned", no_argument, 0, 'u' }, |
| 51 | { "input-endian", required_argument, 0, 'e' }, |
| 52 | { "output-bits", required_argument, 0, 'B' }, |
| 53 | { "output-channels", required_argument, 0, 'C' }, |
| 54 | { "output-rate", required_argument, 0, 'R' }, |
| 55 | { "output-signed", no_argument, 0, 'S' }, |
| 56 | { "output-unsigned", no_argument, 0, 'U' }, |
| 57 | { "output-endian", required_argument, 0, 'E' }, |
| 58 | { 0, 0, 0, 0 } |
| 59 | }; |
| 60 | |
| 61 | /* display usage message and terminate */ |
| 62 | static void help(void) { |
| 63 | xprintf("Usage:\n" |
| 64 | " resample [OPTIONS] < INPUT > OUTPUT\n" |
| 65 | "Options:\n" |
| 66 | " --help, -h Display usage message\n" |
| 67 | "Input format:\n" |
| 68 | " --input-bits, -b N Bits/sample (16)\n" |
| 69 | " --input-channels, -c N Samples/frame (2)\n" |
| 70 | " --input-rate, -r N Frames/second (44100)\n" |
| 71 | " --input-signed, -s Signed samples (yes)\n" |
| 72 | " --input-unsigned, -u Unsigned samples\n" |
| 73 | " --input-endian, -e big|little Sample endianness (native)\n" |
| 74 | "Output format:\n" |
| 75 | " --output-bits, -B N Bits/sample (16)\n" |
| 76 | " --output-channels, -C N Samples/frame (2)\n" |
| 77 | " --output-rate, -R N Frames/second (44100)\n" |
| 78 | " --output-signed, -S Signed samples (yes)\n" |
| 79 | " --output-unsigned, -U Unsigned samples\n" |
| 80 | " --output-endian, -E big|little Sample endianness (native)\n" |
| 81 | "Defaults are in brackets.\n" |
| 82 | "\n" |
| 83 | "Feeds raw sample data through resample_convert().\n"); |
| 84 | xfclose(stdout); |
| 85 | exit(0); |
| 86 | } |
| 87 | |
| 88 | static void converted(uint8_t *bytes, |
| 89 | size_t nbytes, |
| 90 | void attribute((unused)) *cd) { |
| 91 | while(nbytes > 0) { |
| 92 | ssize_t n = write(1, bytes, nbytes); |
| 93 | if(n < 0) |
| 94 | disorder_fatal(errno, "writing to stdout"); |
| 95 | bytes += n; |
| 96 | nbytes -= n; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | int main(int argc, char **argv) { |
| 101 | int n; |
| 102 | |
| 103 | mem_init(); |
| 104 | if(!setlocale(LC_CTYPE, "")) |
| 105 | disorder_fatal(errno, "error calling setlocale"); |
| 106 | while((n = getopt_long(argc, argv, "+hb:c:r:sue:B:C:R:SUE:", |
| 107 | options, 0)) >= 0) { |
| 108 | switch(n) { |
| 109 | case 'h': help(); |
| 110 | case 'b': input_bits = atoi(optarg); break; |
| 111 | case 'c': input_channels = atoi(optarg); break; |
| 112 | case 'r': input_rate = atoi(optarg); break; |
| 113 | case 's': input_signed = 1; break; |
| 114 | case 'u': input_signed = 1; break; |
| 115 | case 'e': |
| 116 | switch(optarg[0]) { |
| 117 | case 'b': case 'B': input_endian = ENDIAN_BIG; break; |
| 118 | case 'l': case 'L': input_endian = ENDIAN_LITTLE; break; |
| 119 | case 'n': case 'N': input_endian = ENDIAN_NATIVE; break; |
| 120 | default: disorder_fatal(0, "unknown endianness '%s'", optarg); |
| 121 | } |
| 122 | break; |
| 123 | case 'B': output_bits = atoi(optarg); break; |
| 124 | case 'C': output_channels = atoi(optarg); break; |
| 125 | case 'R': output_rate = atoi(optarg); break; |
| 126 | case 'S': output_signed = 1; break; |
| 127 | case 'U': output_signed = 1; break; |
| 128 | case 'E': |
| 129 | switch(optarg[0]) { |
| 130 | case 'b': case 'B': output_endian = ENDIAN_BIG; break; |
| 131 | case 'l': case 'L': output_endian = ENDIAN_LITTLE; break; |
| 132 | case 'n': case 'N': output_endian = ENDIAN_NATIVE; break; |
| 133 | default: disorder_fatal(0, "unknown endianness '%s'", optarg); |
| 134 | } |
| 135 | break; |
| 136 | default: disorder_fatal(0, "invalid option"); |
| 137 | } |
| 138 | } |
| 139 | struct resampler rs[1]; |
| 140 | resample_init(rs, input_bits, input_channels, input_rate, input_signed, |
| 141 | input_endian, output_bits, output_channels, output_rate, |
| 142 | output_signed, output_endian); |
| 143 | #define BUFFER_SIZE (1024 * 1024) |
| 144 | uint8_t *buffer = xmalloc_noptr(BUFFER_SIZE); |
| 145 | size_t used = 0; |
| 146 | int eof = 0; |
| 147 | |
| 148 | while(used || !eof) { |
| 149 | if(!eof) { |
| 150 | ssize_t r = read(0, buffer + used, BUFFER_SIZE - used); |
| 151 | if(r < 0) |
| 152 | disorder_fatal(errno, "reading from stdin"); |
| 153 | if(r == 0) |
| 154 | eof = 1; |
| 155 | used += r; |
| 156 | } |
| 157 | size_t consumed = resample_convert(rs, buffer, used, eof, converted, 0); |
| 158 | memmove(buffer, buffer + consumed, used - consumed); |
| 159 | used -= consumed; |
| 160 | } |
| 161 | if(close(1) < 0) |
| 162 | disorder_fatal(errno, "closing stdout"); |
| 163 | return 0; |
| 164 | } |
| 165 | |
| 166 | /* |
| 167 | Local Variables: |
| 168 | c-basic-offset:2 |
| 169 | comment-column:40 |
| 170 | fill-column:79 |
| 171 | indent-tabs-mode:nil |
| 172 | End: |
| 173 | */ |