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test/test_pcm_format: add unit test for float clamping

This commit is contained in:
Max Kellermann 2014-03-15 09:50:44 +01:00
parent 40cce050e7
commit 729304aef5
1 changed files with 20 additions and 0 deletions
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20
test/test_pcm_format.cxx
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@ -97,4 +97,24 @@ PcmFormatTest::TestFormatFloat()
for (size_t i = 0; i < N; ++i)
CPPUNIT_ASSERT_EQUAL(src[i], d[i]);
/* check if clamping works */
float *writable = const_cast<float *>(f.data);
*writable++ = 1.01;
*writable++ = 10;
*writable++ = -1.01;
*writable++ = -10;
d = pcm_convert_to_16(buffer2, dither,
SampleFormat::FLOAT,
f.ToVoid());
CPPUNIT_ASSERT_EQUAL(N, d.size);
CPPUNIT_ASSERT_EQUAL(32767, int(d[0]));
CPPUNIT_ASSERT_EQUAL(32767, int(d[1]));
CPPUNIT_ASSERT_EQUAL(-32768, int(d[2]));
CPPUNIT_ASSERT_EQUAL(-32768, int(d[3]));
for (size_t i = 4; i < N; ++i)
CPPUNIT_ASSERT_EQUAL(src[i], d[i]);
}