[2292] | 1 | //roarvumeter.c: |
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[224] | 2 | |
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[669] | 3 | /* |
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[2292] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008, 2009 |
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[669] | 5 | * |
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| 6 | * This file is part of roarclients a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * RoarAudio is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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| 21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 22 | * |
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| 23 | */ |
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| 24 | |
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[224] | 25 | #include <roaraudio.h> |
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[1103] | 26 | |
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| 27 | #ifdef ROAR_HAVE_LIBM |
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| 28 | |
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[224] | 29 | #include <math.h> |
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| 30 | |
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| 31 | #define BUFSIZE 1024 |
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| 32 | |
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[1633] | 33 | #define MODE_PC 1 |
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| 34 | #define MODE_DB 2 |
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| 35 | |
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[224] | 36 | void usage (void) { |
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| 37 | printf("roarvumeter [OPTIONS]...\n"); |
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| 38 | |
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| 39 | printf("\nOptions:\n\n"); |
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| 40 | |
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| 41 | printf(" --server SERVER - Set server hostname\n" |
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| 42 | " --rate RATE - Set sample rate\n" |
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| 43 | " --bits BITS - Set bits per sample\n" |
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| 44 | " --chans CHANNELS - Set number of channels\n" |
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| 45 | " --samples SAMPLES - Set number of samples\n" |
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| 46 | " --help - Show this help\n" |
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| 47 | ); |
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| 48 | |
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| 49 | } |
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| 50 | |
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[1633] | 51 | int vumeter16bit2ch (int fh, int samples, int16_t * buf, int mode) { |
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[224] | 52 | int i; |
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| 53 | int samples_half = samples/2; |
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| 54 | double suml, sumr; |
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| 55 | |
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| 56 | printf("\e[s"); |
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| 57 | fflush(stdout); |
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| 58 | |
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| 59 | while (read(fh, buf, samples * 2)) { |
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| 60 | suml = sumr = 0; |
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| 61 | |
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| 62 | for (i = 0; i < samples; i += 2) { |
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| 63 | suml += (double) buf[i ] * (double) buf[i ]; |
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| 64 | sumr += (double) buf[i+1] * (double) buf[i+1]; |
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| 65 | } |
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| 66 | |
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[1633] | 67 | suml = sqrt(suml/samples_half); |
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| 68 | sumr = sqrt(sumr/samples_half); |
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[224] | 69 | |
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[1633] | 70 | switch (mode) { |
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| 71 | case MODE_PC: |
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| 72 | printf("L: %3i%% R: %3i%% \e[u", (int)(suml/327.68), (int)(sumr/327.68)); |
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| 73 | break; |
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| 74 | case MODE_DB: |
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| 75 | printf("L: %6.2fdB R: %6.2fdB \e[u", 20*log10(suml/32768), 20*log10(sumr/32768)); |
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| 76 | break; |
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| 77 | } |
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| 78 | |
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[224] | 79 | fflush(stdout); |
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| 80 | } |
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| 81 | return 0; |
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| 82 | } |
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| 83 | |
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[1633] | 84 | int vumeter (int fh, int samples, int bits, int channels, int mode) { |
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[224] | 85 | void * buf = malloc(samples*bits*2); |
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| 86 | |
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| 87 | if ( !buf ) |
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| 88 | return -1; |
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| 89 | |
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| 90 | if ( bits == 16 ) { |
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| 91 | if ( channels == 2 ) { |
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[1633] | 92 | vumeter16bit2ch(fh, samples, (int16_t *) buf, mode); |
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[224] | 93 | free(buf); |
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| 94 | return 0; |
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| 95 | } else { |
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| 96 | return -1; |
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| 97 | } |
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| 98 | } else { |
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| 99 | return -1; |
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| 100 | } |
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| 101 | } |
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| 102 | |
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| 103 | int main (int argc, char * argv[]) { |
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| 104 | int rate = 44100; |
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| 105 | int bits = 16; |
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| 106 | int channels = 2; |
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| 107 | int codec = ROAR_CODEC_DEFAULT; |
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| 108 | int samples = 441; |
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| 109 | char * server = NULL; |
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| 110 | char * k; |
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| 111 | int fh; |
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| 112 | int i; |
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[1633] | 113 | int mode = MODE_PC; |
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[224] | 114 | |
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| 115 | for (i = 1; i < argc; i++) { |
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| 116 | k = argv[i]; |
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| 117 | |
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| 118 | if ( strcmp(k, "--server") == 0 ) { |
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| 119 | server = argv[++i]; |
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| 120 | } else if ( strcmp(k, "--rate") == 0 ) { |
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| 121 | rate = atoi(argv[++i]); |
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| 122 | } else if ( strcmp(k, "--bits") == 0 ) { |
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| 123 | bits = atoi(argv[++i]); |
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| 124 | } else if ( strcmp(k, "--channels") == 0 ) { |
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| 125 | channels = atoi(argv[++i]); |
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| 126 | } else if ( strcmp(k, "--samples") == 0 ) { |
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| 127 | samples = atoi(argv[++i]); |
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[1633] | 128 | } else if ( strcmp(k, "--db") == 0 ) { |
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| 129 | mode = MODE_DB; |
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[224] | 130 | } else if ( strcmp(k, "--help") == 0 ) { |
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| 131 | usage(); |
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| 132 | return 0; |
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| 133 | } else { |
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| 134 | fprintf(stderr, "Error: unknown argument: %s\n", k); |
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| 135 | usage(); |
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| 136 | return 1; |
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| 137 | } |
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| 138 | } |
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| 139 | |
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| 140 | if ( (fh = roar_simple_monitor(rate, channels, bits, codec, server, "roarvumeter")) == -1 ) { |
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| 141 | fprintf(stderr, "Error: can not start playback\n"); |
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| 142 | return 1; |
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| 143 | } |
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| 144 | |
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[1633] | 145 | vumeter(fh, samples*channels, bits, channels, mode); |
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[224] | 146 | |
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[225] | 147 | printf("\n"); // if the reach this then roard has quited and we should print a newline |
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| 148 | |
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[224] | 149 | roar_simple_close(fh); |
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| 150 | |
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| 151 | return 0; |
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| 152 | } |
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| 153 | |
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[1103] | 154 | #else |
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| 155 | int main (void) { |
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| 156 | fprintf(stderr, "Error: No Math library support compiled in.\n"); |
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| 157 | return 1; |
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| 158 | } |
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| 159 | #endif |
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| 160 | |
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[224] | 161 | //ll |
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