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/*
* Copyright (C) 2003-2014 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, 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 General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "test_pcm_all.hxx"
#include "test_pcm_util.hxx"
#include "pcm/PcmFormat.hxx"
#include "pcm/PcmDither.hxx"
#include "pcm/PcmUtils.hxx"
#include "pcm/PcmBuffer.hxx"
#include "AudioFormat.hxx"
void
PcmFormatTest::TestFormat8to16()
{
constexpr size_t N = 256;
const auto src = TestDataBuffer<int8_t, N>();
PcmBuffer buffer;
PcmDither dither;
auto d = pcm_convert_to_16(buffer, dither, SampleFormat::S8, src);
CPPUNIT_ASSERT_EQUAL(N, d.size);
for (size_t i = 0; i < N; ++i)
CPPUNIT_ASSERT_EQUAL(int(src[i]), d[i] >> 8);
}
void
PcmFormatTest::TestFormat16to24()
{
constexpr size_t N = 256;
const auto src = TestDataBuffer<int16_t, N>();
PcmBuffer buffer;
auto d = pcm_convert_to_24(buffer, SampleFormat::S16, src);
CPPUNIT_ASSERT_EQUAL(N, d.size);
for (size_t i = 0; i < N; ++i)
CPPUNIT_ASSERT_EQUAL(int(src[i]), d[i] >> 8);
}
void
PcmFormatTest::TestFormat16to32()
{
constexpr size_t N = 256;
const auto src = TestDataBuffer<int16_t, N>();
PcmBuffer buffer;
auto d = pcm_convert_to_32(buffer, SampleFormat::S16, src);
CPPUNIT_ASSERT_EQUAL(N, d.size);
for (size_t i = 0; i < N; ++i)
CPPUNIT_ASSERT_EQUAL(int(src[i]), d[i] >> 16);
}
void
PcmFormatTest::TestFormatFloat()
{
constexpr size_t N = 256;
const auto src = TestDataBuffer<int16_t, N>();
PcmBuffer buffer1, buffer2;
auto f = pcm_convert_to_float(buffer1, SampleFormat::S16, src);
CPPUNIT_ASSERT_EQUAL(N, f.size);
for (size_t i = 0; i != f.size; ++i) {
CPPUNIT_ASSERT(f[i] >= -1.);
CPPUNIT_ASSERT(f[i] <= 1.);
}
PcmDither dither;
auto d = pcm_convert_to_16(buffer2, dither,
SampleFormat::FLOAT,
f.ToVoid());
CPPUNIT_ASSERT_EQUAL(N, d.size);
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]);
}
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