Add self-test encode -> decode, test ltc_encoder_end_encode()

.gitignore

@@ -16,6 +16,7 @@ config.*
 *.swp
 tests/ltcdecode
 tests/ltcencode
+tests/ltcloop
 tests/output.raw
 
 doc/html/

tests/Makefile.am

@@ -1,4 +1,4 @@
-check_PROGRAMS = ltcencode ltcdecode
+check_PROGRAMS = ltcencode ltcdecode ltcloop
 
 CLEANFILES = output.raw atconfig
 
@@ -18,6 +18,11 @@ ltcencode_SOURCES = ltcencode.c
 ltcencode_CFLAGS=-g -Wall
 ltcencode_LDADD = $(LIBLTCDIR)/libltc.la -lm
 
+ltcloop_SOURCES = ltcloop.c
+ltcloop_CFLAGS=-g -Wall
+ltcloop_LDADD = $(LIBLTCDIR)/libltc.la -lm
+
+
 check: $(check_PROGRAMS)
 	 date
 	 uname -a
@@ -30,5 +35,7 @@ check: $(check_PROGRAMS)
 	 @echo "-----------------------------------------------------------------"
 	 ./ltcdecode $(srcdir)/timecode.raw 882 | diff -q $(srcdir)/timecode.txt -
 	 @echo "-----------------------------------------------------------------"
+	 ./ltcloop
+	 @echo "-----------------------------------------------------------------"
 	 @echo "  ${PACKAGE}-${VERSION} passed all tests."
 	 @echo "-----------------------------------------------------------------"

tests/ltcloop.c

@@ -0,0 +1,98 @@
+/**
+   @brief self-test encode and decode LTC
+   @file ltcloop.c
+   @author Robin Gareus <[email protected]>
+
+   Copyright (C) 2006-2022 Robin Gareus <[email protected]>
+   Copyright (C) 2008-2009 Jan <[email protected]>
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU Lesser Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <ltc.h>
+
+
+int main(int argc, char **argv) {
+	double fps = 25;
+	double samplerate = 48000;
+	int    vframe_cnt = 0;
+	int    vframe_end = 1;
+
+	LTCEncoder* encoder = ltc_encoder_create (samplerate, fps, 0, 0);
+	ltc_encoder_set_filter(encoder, 0);
+	ltc_encoder_set_volume(encoder, -3.0);
+
+	int frame_size = ltc_encoder_get_buffersize (encoder) * sizeof (ltcsnd_sample_t);
+
+	ltcsnd_sample_t* buf = malloc ((1 + vframe_end) * frame_size);
+
+	/* Encode */
+	int off = 0;
+	for (vframe_cnt = 0; vframe_cnt < vframe_end; ++ vframe_cnt) {
+		ltc_encoder_encode_frame (encoder);
+		off += ltc_encoder_copy_buffer (encoder, &buf[off]);
+		ltc_encoder_inc_timecode (encoder);
+	}
+
+	/* finish frame */
+	ltc_encoder_end_encode (encoder);
+	off += ltc_encoder_copy_buffer (encoder, &buf[off]);
+	ltc_encoder_free(encoder);
+
+#if 0
+	printf ("Encoded: %d [bytes]\n", off);
+	ltcsnd_sample_t last = 0;
+	for (int i = 0; i < off; ++i) {
+		if (buf[i] != last) {
+			printf ("%3d : %d\n", i, buf[i]);
+			last = buf[i];
+		}
+	}
+#endif
+
+	/* Decode */
+	LTCDecoder* decoder = ltc_decoder_create(samplerate / fps, vframe_end);
+	LTCFrameExt frame;
+	ltc_decoder_write (decoder, buf, off, 0);
+
+	while (ltc_decoder_read (decoder, &frame)) {
+		SMPTETimecode stime;
+		ltc_frame_to_time (&stime, &frame.ltc, 0);
+		--vframe_cnt;
+
+#if 0
+		printf("%02d:%02d:%02d%c%02d | %8lld %8lld%s\n",
+				stime.hours,
+				stime.mins,
+				stime.secs,
+				(frame.ltc.dfbit) ? '.' : ':',
+				stime.frame,
+				frame.off_start,
+				frame.off_end,
+				frame.reverse ? "  R" : ""
+				);
+#endif
+	}
+
+	ltc_decoder_free (decoder);
+	free (buf);
+
+	return vframe_cnt == 0 ? 0 : -1;
+}