[224] | 1 | //roarcat.c: |
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| 2 | |
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| 3 | #include <roaraudio.h> |
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| 4 | #include <math.h> |
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| 5 | |
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| 6 | #define BUFSIZE 1024 |
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| 7 | |
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| 8 | void usage (void) { |
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| 9 | printf("roarvumeter [OPTIONS]...\n"); |
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| 10 | |
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| 11 | printf("\nOptions:\n\n"); |
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| 12 | |
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| 13 | printf(" --server SERVER - Set server hostname\n" |
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| 14 | " --rate RATE - Set sample rate\n" |
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| 15 | " --bits BITS - Set bits per sample\n" |
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| 16 | " --chans CHANNELS - Set number of channels\n" |
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| 17 | " --samples SAMPLES - Set number of samples\n" |
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| 18 | " --help - Show this help\n" |
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| 19 | ); |
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| 20 | |
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| 21 | } |
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| 22 | |
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| 23 | int vumeter16bit2ch (int fh, int samples, int16_t * buf) { |
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| 24 | int i; |
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| 25 | int samples_half = samples/2; |
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| 26 | double suml, sumr; |
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| 27 | |
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| 28 | printf("\e[s"); |
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| 29 | fflush(stdout); |
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| 30 | |
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| 31 | while (read(fh, buf, samples * 2)) { |
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| 32 | suml = sumr = 0; |
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| 33 | |
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| 34 | for (i = 0; i < samples; i += 2) { |
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| 35 | suml += (double) buf[i ] * (double) buf[i ]; |
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| 36 | sumr += (double) buf[i+1] * (double) buf[i+1]; |
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| 37 | } |
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| 38 | |
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| 39 | suml = sqrt(suml/samples_half)/327.68; |
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| 40 | sumr = sqrt(sumr/samples_half)/327.68; |
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| 41 | |
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[226] | 42 | printf("L: %3i%% R: %3i%% \e[u", (int)suml, (int)sumr); |
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[224] | 43 | fflush(stdout); |
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| 44 | } |
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| 45 | return 0; |
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| 46 | } |
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| 47 | |
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| 48 | int vumeter (int fh, int samples, int bits, int channels) { |
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| 49 | void * buf = malloc(samples*bits*2); |
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| 50 | |
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| 51 | if ( !buf ) |
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| 52 | return -1; |
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| 53 | |
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| 54 | if ( bits == 16 ) { |
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| 55 | if ( channels == 2 ) { |
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| 56 | vumeter16bit2ch(fh, samples, (int16_t *) buf); |
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| 57 | free(buf); |
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| 58 | return 0; |
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| 59 | } else { |
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| 60 | return -1; |
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| 61 | } |
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| 62 | } else { |
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| 63 | return -1; |
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| 64 | } |
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| 65 | } |
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| 66 | |
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| 67 | int main (int argc, char * argv[]) { |
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| 68 | int rate = 44100; |
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| 69 | int bits = 16; |
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| 70 | int channels = 2; |
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| 71 | int codec = ROAR_CODEC_DEFAULT; |
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| 72 | int samples = 441; |
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| 73 | char * server = NULL; |
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| 74 | char * k; |
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| 75 | int fh; |
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| 76 | int i; |
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| 77 | |
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| 78 | for (i = 1; i < argc; i++) { |
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| 79 | k = argv[i]; |
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| 80 | |
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| 81 | if ( strcmp(k, "--server") == 0 ) { |
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| 82 | server = argv[++i]; |
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| 83 | } else if ( strcmp(k, "--rate") == 0 ) { |
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| 84 | rate = atoi(argv[++i]); |
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| 85 | } else if ( strcmp(k, "--bits") == 0 ) { |
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| 86 | bits = atoi(argv[++i]); |
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| 87 | } else if ( strcmp(k, "--channels") == 0 ) { |
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| 88 | channels = atoi(argv[++i]); |
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| 89 | } else if ( strcmp(k, "--samples") == 0 ) { |
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| 90 | samples = atoi(argv[++i]); |
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| 91 | } else if ( strcmp(k, "--help") == 0 ) { |
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| 92 | usage(); |
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| 93 | return 0; |
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| 94 | } else { |
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| 95 | fprintf(stderr, "Error: unknown argument: %s\n", k); |
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| 96 | usage(); |
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| 97 | return 1; |
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| 98 | } |
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| 99 | } |
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| 100 | |
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| 101 | if ( (fh = roar_simple_monitor(rate, channels, bits, codec, server, "roarvumeter")) == -1 ) { |
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| 102 | fprintf(stderr, "Error: can not start playback\n"); |
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| 103 | return 1; |
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| 104 | } |
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| 105 | |
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| 106 | vumeter(fh, samples*channels, bits, channels); |
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| 107 | |
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[225] | 108 | printf("\n"); // if the reach this then roard has quited and we should print a newline |
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| 109 | |
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[224] | 110 | roar_simple_close(fh); |
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| 111 | |
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| 112 | return 0; |
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| 113 | } |
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| 114 | |
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| 115 | //ll |
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