1 | //roarvumeter.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2012 |
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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, 51 Franklin Street, Fifth Floor, |
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22 | * Boston, MA 02110-1301, USA. |
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23 | * |
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24 | */ |
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25 | |
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26 | #include <roaraudio.h> |
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27 | #include <libroardsp/libroardsp.h> |
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28 | |
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29 | #ifdef ROAR_HAVE_LIBM |
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30 | |
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31 | #include <math.h> |
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32 | |
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33 | #define BUFSIZE 1024 |
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34 | |
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35 | #define LOWPASS_ORDER 6 |
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36 | |
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37 | #define MODE_NONE 0x00 |
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38 | #define MODE_PC 0x01 |
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39 | #define MODE_DB 0x02 |
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40 | #define MODE_BEAT 0x04 |
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41 | |
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42 | void usage (void) { |
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43 | printf("roarvumeter [OPTIONS]...\n"); |
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44 | |
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45 | printf("\nOptions:\n\n"); |
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46 | |
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47 | printf(" --server SERVER - Set server hostname\n" |
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48 | " --rate RATE - Set sample rate\n" |
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49 | " --bits BITS - Set bits per sample\n" |
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50 | " --chans CHANNELS - Set number of channels\n" |
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51 | " --samples SAMPLES - Set number of input samples per block\n" |
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52 | " --pc - Use percent scale\n" |
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53 | " --db - Use dB scale\n" |
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54 | " --beat - Enable beat detection\n" |
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55 | " --lowpass FREQ - Use lowpass to filter input (-%idB/dec)\n" |
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56 | " --help - Show this help\n", |
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57 | LOWPASS_ORDER * 20 |
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58 | ); |
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59 | |
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60 | } |
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61 | |
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62 | int vumeter16bit2ch (struct roar_vio_calls * vio, int samples, int16_t * buf, int mode, struct roardsp_filterchain * fc) { |
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63 | struct roar_stream beat_stream[1]; |
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64 | struct roardsp_filter beat_lp[1]; |
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65 | float beat_lpfreq = 1; |
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66 | int i; |
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67 | int samples_half = samples/2; |
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68 | int64_t suml, sumr; |
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69 | double rmsl, rmsr; |
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70 | int run_filters = roardsp_fchain_num(fc); |
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71 | int beat_detection = mode & MODE_BEAT; |
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72 | char * beat[2] = {" ", "Beat!"}; |
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73 | char * dbeat = beat[0]; |
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74 | int have_beat = 0; |
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75 | int16_t beat_val, beat_old; |
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76 | |
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77 | if ( beat_detection ) { |
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78 | mode -= MODE_BEAT; |
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79 | |
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80 | roar_stream_new(beat_stream, 10, 1, 16, ROAR_CODEC_PCM); |
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81 | roardsp_filter_init(beat_lp, beat_stream, ROARDSP_FILTER_LOWP); |
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82 | roardsp_filter_ctl(beat_lp, ROARDSP_FCTL_FREQ, &beat_lpfreq); |
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83 | } |
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84 | |
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85 | printf("\e[s"); |
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86 | fflush(stdout); |
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87 | |
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88 | while (roar_vio_read(vio, buf, samples * 2) > 0) { |
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89 | suml = sumr = 0; |
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90 | |
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91 | if ( run_filters ) { |
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92 | roardsp_fchain_calc(fc, buf, samples * 2); |
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93 | } |
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94 | |
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95 | for (i = 0; i < samples; i += 2) { |
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96 | suml += (int64_t) buf[i ] * (int64_t) buf[i ]; |
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97 | sumr += (int64_t) buf[i+1] * (int64_t) buf[i+1]; |
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98 | } |
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99 | |
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100 | rmsl = sqrt((double)suml/(double)samples_half); |
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101 | rmsr = sqrt((double)sumr/(double)samples_half); |
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102 | |
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103 | if ( beat_detection ) { |
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104 | beat_old = beat_val = (rmsl + rmsr) / 2; |
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105 | roardsp_filter_calc(beat_lp, &beat_val, 2); |
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106 | if ( (float)beat_old > (float)beat_val*1.1f ) { |
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107 | dbeat = beat[1]; |
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108 | have_beat = 1; |
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109 | } else { |
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110 | dbeat = beat[0]; |
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111 | have_beat = 0; |
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112 | } |
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113 | } |
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114 | |
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115 | switch (mode) { |
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116 | case MODE_NONE: // beat only |
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117 | if ( have_beat ) |
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118 | printf("%s\n", dbeat); |
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119 | break; |
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120 | case MODE_PC: |
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121 | printf("L: %3i%% R: %3i%% %s \e[u", (int)(rmsl/327.68), (int)(rmsr/327.68), dbeat); |
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122 | break; |
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123 | case MODE_DB: |
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124 | printf("L: %6.2fdB R: %6.2fdB %s \e[u", 20*log10(rmsl/32768.), 20*log10(rmsr/32768.), dbeat); |
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125 | break; |
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126 | } |
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127 | |
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128 | fflush(stdout); |
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129 | } |
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130 | |
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131 | if ( beat_detection ) { |
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132 | roardsp_filter_uninit(beat_lp); |
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133 | } |
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134 | |
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135 | return 0; |
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136 | } |
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137 | |
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138 | int vumeter (struct roar_vio_calls * vio, int samples, int bits, int channels, int mode, struct roardsp_filterchain * fc) { |
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139 | void * buf = roar_mm_malloc((samples*bits*channels)/8); |
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140 | |
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141 | if ( buf == NULL ) |
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142 | return -1; |
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143 | |
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144 | if ( bits == 16 ) { |
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145 | if ( channels == 2 ) { |
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146 | vumeter16bit2ch(vio, samples, (int16_t *) buf, mode, fc); |
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147 | roar_mm_free(buf); |
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148 | return 0; |
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149 | } else { |
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150 | roar_mm_free(buf); |
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151 | return -1; |
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152 | } |
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153 | } else { |
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154 | roar_mm_free(buf); |
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155 | return -1; |
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156 | } |
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157 | } |
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158 | |
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159 | int main (int argc, char * argv[]) { |
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160 | struct roar_connection con; |
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161 | struct roar_stream s; |
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162 | struct roardsp_filterchain fchain; |
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163 | struct roardsp_filter * filter; |
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164 | float lowpass_freq = 0; |
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165 | int rate = ROAR_RATE_DEFAULT; |
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166 | int bits = 16; |
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167 | int channels = 2; |
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168 | int codec = ROAR_CODEC_DEFAULT; |
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169 | int samples = -1; |
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170 | char * server = NULL; |
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171 | char * k; |
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172 | struct roar_vio_calls stream, re; |
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173 | int i; |
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174 | int mode = 0; |
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175 | |
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176 | for (i = 1; i < argc; i++) { |
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177 | k = argv[i]; |
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178 | |
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179 | if ( strcmp(k, "--server") == 0 ) { |
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180 | server = argv[++i]; |
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181 | } else if ( strcmp(k, "--rate") == 0 ) { |
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182 | rate = roar_str2rate(argv[++i]); |
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183 | } else if ( strcmp(k, "--bits") == 0 ) { |
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184 | bits = roar_str2bits(argv[++i]); |
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185 | } else if ( strcmp(k, "--channels") == 0 || strcmp(k, "--chans") == 0) { |
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186 | channels = roar_str2channels(argv[++i]); |
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187 | } else if ( strcmp(k, "--samples") == 0 ) { |
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188 | samples = atoi(argv[++i]); |
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189 | } else if ( strcmp(k, "--db") == 0 ) { |
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190 | mode |= MODE_PC; |
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191 | mode -= MODE_PC; |
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192 | mode |= MODE_DB; |
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193 | } else if ( strcmp(k, "--pc") == 0 ) { |
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194 | mode |= MODE_DB; |
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195 | mode -= MODE_DB; |
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196 | mode |= MODE_PC; |
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197 | } else if ( strcmp(k, "--beat") == 0 ) { |
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198 | mode |= MODE_BEAT; |
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199 | } else if ( strcmp(k, "--lowpass") == 0 ) { |
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200 | lowpass_freq = atof(argv[++i]); |
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201 | } else if ( strcmp(k, "--help") == 0 ) { |
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202 | usage(); |
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203 | return 0; |
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204 | } else { |
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205 | fprintf(stderr, "Error: unknown argument: %s\n", k); |
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206 | usage(); |
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207 | return 1; |
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208 | } |
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209 | } |
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210 | |
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211 | if ( !mode ) |
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212 | mode = MODE_PC; |
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213 | |
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214 | if ( samples == -1 ) |
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215 | samples = rate/10; |
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216 | |
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217 | if ( roar_simple_connect(&con, server, "roarvumeter") == -1 ) { |
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218 | fprintf(stderr, "Error: can not connect to server!\n"); |
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219 | return 1; |
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220 | } |
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221 | |
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222 | if ( roar_vio_simple_new_stream_obj(&stream, &con, &s, rate, channels, bits, codec, ROAR_DIR_MONITOR, -1) == -1) { |
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223 | fprintf(stderr, "Error: can not start monetoring\n"); |
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224 | return 1; |
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225 | } |
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226 | |
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227 | if ( roar_vio_open_re(&re, &stream) == -1 ) { |
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228 | roar_vio_close(&stream); |
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229 | fprintf(stderr, "Error: can not open RE VIO layer\n"); |
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230 | return 1; |
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231 | } |
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232 | |
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233 | if ( roardsp_fchain_init(&fchain) == -1 ) { |
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234 | roar_vio_close(&re); |
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235 | fprintf(stderr, "Error: can not init filterchain\n"); |
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236 | return 1; |
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237 | } |
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238 | |
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239 | if ( lowpass_freq > 1 ) { |
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240 | for (i = 0; i < LOWPASS_ORDER; i++) { |
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241 | if ( roardsp_filter_new(&filter, &s, ROARDSP_FILTER_LOWP) == -1 ) { |
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242 | fprintf(stderr, "Error: can not open lowpass\n"); |
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243 | roar_vio_close(&re); |
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244 | roardsp_fchain_uninit(&fchain); |
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245 | return 1; |
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246 | } |
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247 | |
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248 | if ( roardsp_filter_ctl(filter, ROARDSP_FCTL_FREQ, &lowpass_freq) == -1 ) { |
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249 | fprintf(stderr, "Error: can not set filter frequency\n"); |
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250 | roar_vio_close(&re); |
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251 | roardsp_fchain_uninit(&fchain); |
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252 | return 1; |
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253 | } |
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254 | |
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255 | if ( roardsp_fchain_add(&fchain, filter) == -1 ) { |
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256 | fprintf(stderr, "Error: can not set filter frequency\n"); |
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257 | roar_vio_close(&re); |
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258 | roardsp_fchain_uninit(&fchain); |
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259 | return 1; |
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260 | } |
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261 | } |
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262 | } |
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263 | |
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264 | vumeter(&re, samples*channels, bits, channels, mode, &fchain); |
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265 | |
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266 | printf("\n"); // if the reach this then roard has quited and we should print a newline |
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267 | |
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268 | roar_vio_close(&re); |
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269 | |
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270 | roar_disconnect(&con); |
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271 | |
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272 | roardsp_fchain_uninit(&fchain); |
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273 | |
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274 | return 0; |
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275 | } |
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276 | |
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277 | #else |
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278 | int main (void) { |
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279 | fprintf(stderr, "Error: No Math library support compiled in.\n"); |
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280 | return 1; |
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281 | } |
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282 | #endif |
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283 | |
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284 | //ll |
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