X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=src%2Ftest_streams%2Fmain.c;h=28a14685ad24185665acd7072d550bca1387fb1a;hb=1f0daccf2b58994879ffa627a5e6000e3c321139;hp=fe1173cfcd72b37ad43f102acabbd0190ebfbf9b;hpb=fc360735ce4d1aa88a94bfccdd3bea5bdd19a8d6;p=platform%2Fupstream%2Fflac.git

diff --git a/src/test_streams/main.c b/src/test_streams/main.c
index fe1173c..28a1468 100644
--- a/src/test_streams/main.c
+++ b/src/test_streams/main.c
@@ -869,6 +869,51 @@ foo:
 	return false;
 }
 
+static FLAC__bool generate_noisy_sine(void)
+{
+	FILE *f;
+	FLAC__byte wav[] = {
+		'R', 'I', 'F', 'F',  76,   0,   0,   0,
+		'W', 'A', 'V', 'E', 'f', 'm', 't', ' ',
+		 16,   0,   0,   0,   1,   0,   1,   0,
+		0x44,0xAC,  0,   0,0x88,0x58,0x01,   0,
+		  2,   0,  16,   0, 'd', 'a', 't', 'a',
+		0xa8,   0xba,   0x6,   0
+	};
+	int32_t randstate = 0x1243456;
+	double sample, last_val = 0.0;
+	int k;
+
+	if(0 == (f = fopen("noisy-sine.wav", "wb")))
+		return false;
+	if(fwrite(wav, 1, sizeof (wav), f) < sizeof (wav))
+		goto foo;
+
+	for (k = 0 ; k < 5 * 44100 ; k++) {
+		/* Obvioulsy not a crypto quality RNG. */
+		randstate = 11117 * randstate + 211231;
+		randstate = 11117 * randstate + 211231;
+		randstate = 11117 * randstate + 211231;
+
+		sample = randstate / (0x7fffffff * 1.000001);
+		sample = 0.2 * sample - 0.9 * last_val;
+
+		last_val = sample;
+
+		sample += sin (2.0 * k * M_PI * 1.0 / 32.0);
+		sample *= 0.4;
+
+		write_little_endian_int16(f, lrintf(sample * 32700.0));
+	};
+
+	fclose(f);
+
+	return true;
+foo:
+	fclose(f);
+	return false;
+}
+
 static FLAC__bool generate_wackywav64s(void)
 {
 	FILE *f;
@@ -1078,6 +1123,7 @@ int main(int argc, char *argv[])
 	if(!generate_wackywavs()) return 1;
 	if(!generate_wackywav64s()) return 1;
 	if(!generate_wackyrf64s()) return 1;
+	if(!generate_noisy_sine()) return 1;
 	for(channels = 1; channels <= 8; channels *= 2) {
 		unsigned bits_per_sample;
 		for(bits_per_sample = 8; bits_per_sample <= 24; bits_per_sample += 4) {