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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 "pcm/Volume.hxx"
#include "pcm/Traits.hxx"
#include "util/ConstBuffer.hxx"
#include "util/Error.hxx"
#include "test_pcm_util.hxx"
#include <algorithm>
#include <string.h>
template<SampleFormat F, class Traits=SampleTraits<F>,
typename G=RandomInt<typename Traits::value_type>>
static void
TestVolume(G g=G())
{
typedef typename Traits::value_type value_type;
PcmVolume pv;
CPPUNIT_ASSERT(pv.Open(F, IgnoreError()));
constexpr size_t N = 256;
static value_type zero[N];
const auto _src = TestDataBuffer<value_type, N>(g);
const ConstBuffer<void> src(_src, sizeof(_src));
pv.SetVolume(0);
auto dest = pv.Apply(src);
CPPUNIT_ASSERT_EQUAL(src.size, dest.size);
CPPUNIT_ASSERT_EQUAL(0, memcmp(dest.data, zero, sizeof(zero)));
pv.SetVolume(PCM_VOLUME_1);
dest = pv.Apply(src);
CPPUNIT_ASSERT_EQUAL(src.size, dest.size);
CPPUNIT_ASSERT_EQUAL(0, memcmp(dest.data, src.data, src.size));
pv.SetVolume(PCM_VOLUME_1 / 2);
dest = pv.Apply(src);
CPPUNIT_ASSERT_EQUAL(src.size, dest.size);
const auto _dest = ConstBuffer<value_type>::FromVoid(dest);
for (unsigned i = 0; i < N; ++i) {
const auto expected = (_src[i] + 1) / 2;
CPPUNIT_ASSERT(_dest[i] >= expected - 4);
CPPUNIT_ASSERT(_dest[i] <= expected + 4);
}
pv.Close();
}
void
PcmVolumeTest::TestVolume8()
{
TestVolume<SampleFormat::S8>();
}
void
PcmVolumeTest::TestVolume16()
{
TestVolume<SampleFormat::S16>();
}
void
PcmVolumeTest::TestVolume24()
{
TestVolume<SampleFormat::S24_P32>(RandomInt24());
}
void
PcmVolumeTest::TestVolume32()
{
TestVolume<SampleFormat::S32>();
}
void
PcmVolumeTest::TestVolumeFloat()
{
PcmVolume pv;
CPPUNIT_ASSERT(pv.Open(SampleFormat::FLOAT, IgnoreError()));
constexpr size_t N = 256;
static float zero[N];
const auto _src = TestDataBuffer<float, N>(RandomFloat());
const ConstBuffer<void> src(_src, sizeof(_src));
pv.SetVolume(0);
auto dest = pv.Apply(src);
CPPUNIT_ASSERT_EQUAL(src.size, dest.size);
CPPUNIT_ASSERT_EQUAL(0, memcmp(dest.data, zero, sizeof(zero)));
pv.SetVolume(PCM_VOLUME_1);
dest = pv.Apply(src);
CPPUNIT_ASSERT_EQUAL(src.size, dest.size);
CPPUNIT_ASSERT_EQUAL(0, memcmp(dest.data, src.data, src.size));
pv.SetVolume(PCM_VOLUME_1 / 2);
dest = pv.Apply(src);
CPPUNIT_ASSERT_EQUAL(src.size, dest.size);
const auto _dest = ConstBuffer<float>::FromVoid(dest);
for (unsigned i = 0; i < N; ++i)
CPPUNIT_ASSERT_DOUBLES_EQUAL(_src[i] / 2, _dest[i], 1);
pv.Close();
}
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