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test/PcmFormat: add Float/32 bit test

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This commit is contained in:
Max Kellermann
2018-10-29 22:41:48 +01:00
parent 8463441afe
commit c92f0a1336
1 changed files with 46 additions and 0 deletions
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46
test/test_pcm_format.cxx
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@@ -115,3 +115,49 @@ TEST(PcmTest, FormatFloat16)
for (size_t i = 4; i < N; ++i)
EXPECT_EQ(src[i], d[i]);
}
TEST(PcmTest, FormatFloat32)
{
constexpr size_t N = 509;
const auto src = TestDataBuffer<int32_t, N>();
PcmBuffer buffer1, buffer2;
auto f = pcm_convert_to_float(buffer1, SampleFormat::S32, src);
EXPECT_EQ(N, f.size);
for (size_t i = 0; i != f.size; ++i) {
EXPECT_GE(f[i], -1.);
EXPECT_LE(f[i], 1.);
}
auto d = pcm_convert_to_32(buffer2,
SampleFormat::FLOAT,
f.ToVoid());
EXPECT_EQ(N, d.size);
constexpr int error = 64;
for (size_t i = 0; i < N; ++i)
EXPECT_NEAR(src[i], d[i], error);
/* 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_32(buffer2,
SampleFormat::FLOAT,
f.ToVoid());
EXPECT_EQ(N, d.size);
EXPECT_EQ(2147483647, int(d[0]));
EXPECT_EQ(2147483647, int(d[1]));
EXPECT_EQ(-2147483648, int(d[2]));
EXPECT_EQ(-2147483648, int(d[3]));
for (size_t i = 4; i < N; ++i)
EXPECT_NEAR(src[i], d[i], error);
}