Add a regresion test for compression levels.

[platform/upstream/flac.git] / src / test_streams / main.c

diff --git a/src/test_streams/main.c b/src/test_streams/main.c
index fe1173c..28a1468 100644 (file)
--- 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) {