92 lines
2.7 KiB
Ruby
92 lines
2.7 KiB
Ruby
class Libltc < Formula
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desc "POSIX-C Library for handling Linear/Logitudinal Time Code (LTC)"
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homepage "https://x42.github.io/libltc/"
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url "https://github.com/x42/libltc/releases/download/v1.3.1/libltc-1.3.1.tar.gz"
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sha256 "50e63eb3b767151bc0159a3cc5d426d03a42fd69029bc9b3b7c346555f4b709c"
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bottle do
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cellar :any
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sha256 "aecfd413335e0981c5ac452bc0b81bee57d3a4e5974237f5b6a64aae734369cf" => :mojave
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sha256 "30f7ddada1d191c63214d44d9acec4862e71bca2ee67368c8546ec7240f65a9a" => :high_sierra
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sha256 "1c51db3447916e208601775d43fb248bdc76f3b29b6f309ccc74eddc0a11c9c6" => :sierra
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end
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def install
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system "./configure", "--prefix=#{prefix}"
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system "make", "install"
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end
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test do
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(testpath/"test.c").write <<~EOS
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// stripped-down copy of:
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// https://raw.githubusercontent.com/x42/libltc/87d45b3/tests/example_encode.c
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ltc.h>
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int main(int argc, char **argv) {
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FILE* file;
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double length = 2;
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double fps = 25;
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double sample_rate = 48000;
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char *filename = "#{testpath}/foobar";
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int vframe_cnt;
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int vframe_last;
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int total = 0;
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ltcsnd_sample_t *buf;
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LTCEncoder *encoder;
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SMPTETimecode st;
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const char timezone[6] = "+0100";
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strcpy(st.timezone, timezone);
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st.years = 8;
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st.months = 12;
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st.days = 31;
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st.hours = 23;
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st.mins = 59;
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st.secs = 59;
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st.frame = 0;
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file = fopen(filename, "wb");
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if (!file) {
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fprintf(stderr, "Error: can not open file '%s' for writing.\\n", filename);
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return 1;
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}
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encoder = ltc_encoder_create(sample_rate, fps,
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fps==25?LTC_TV_625_50:LTC_TV_525_60, LTC_USE_DATE);
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ltc_encoder_set_timecode(encoder, &st);
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vframe_cnt = 0;
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vframe_last = length * fps;
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while (vframe_cnt++ < vframe_last) {
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int byte_cnt;
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for (byte_cnt = 0 ; byte_cnt < 10 ; byte_cnt++) {
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ltc_encoder_encode_byte(encoder, byte_cnt, 1.0);
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int len;
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buf = ltc_encoder_get_bufptr(encoder, &len, 1);
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if (len > 0) {
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fwrite(buf, sizeof(ltcsnd_sample_t), len, file);
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total+=len;
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}
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}
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ltc_encoder_inc_timecode(encoder);
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}
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fclose(file);
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ltc_encoder_free(encoder);
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printf("Done: wrote %d samples to '%s'\\n", total, filename);
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return 0;
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}
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EOS
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system ENV.cc, "test.c", "-L#{lib}", "-lltc", "-lm", "-o", "test"
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system "./test"
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assert (testpath/"foobar").file?
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end
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end
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