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/*
* This file is part of AtracDEnc.
*
* AtracDEnc is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* AtracDEnc 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with AtracDEnc; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "encode.h"
#include <gtest/gtest.h>
#include <cmath>
#include <memory>
#include <bitstream/bitstream.h>
using namespace NAtracDEnc;
static size_t SomeBitFn1(float lambda) {
return sqrt(lambda * (-1.0f)) * 300;
}
static size_t SomeBitFn2(float lambda) {
return 1 + (SomeBitFn1(lambda) & (~(size_t)7));
}
class TPartEncoder1 : public IBitStreamPartEncoder {
public:
explicit TPartEncoder1(size_t expCalls)
: ExpCalls(expCalls)
{}
EStatus Encode(void* frameData, TBitAllocHandler& ba) override {
EncCalls++;
ba.Start(1000, -15, -1);
return EStatus::Ok;
}
void Dump(NBitStream::TBitStream& bs) override {
EXPECT_EQ(EncCalls, ExpCalls);
}
uint32_t GetConsumption() const noexcept override {
return 0;
}
private:
const size_t ExpCalls;
size_t EncCalls = 0;
};
template<size_t (*F)(float)>
class TPartEncoder2 : public IBitStreamPartEncoder {
public:
explicit TPartEncoder2(size_t expCalls)
: ExpCalls(expCalls)
{}
EStatus Encode(void* frameData, TBitAllocHandler& ba) override {
EncCalls++;
auto lambda = ba.Continue();
auto bits = F(lambda);
ba.Submit(bits);
Bits = bits;
return EStatus::Ok;
}
void Dump(NBitStream::TBitStream& bs) override {
EXPECT_EQ(EncCalls, ExpCalls);
for (size_t i = 0; i < Bits; i++) {
bs.Write(1, 1);
}
}
uint32_t GetConsumption() const noexcept override {
return 1 * Bits;
}
private:
const size_t ExpCalls;
size_t EncCalls = 0;
size_t Bits = 0;
};
class TPartEncoder3 : public IBitStreamPartEncoder {
public:
explicit TPartEncoder3(size_t expCalls)
: ExpCalls(expCalls)
{}
EStatus Encode(void* frameData, TBitAllocHandler& ba) override {
EncCalls++;
return EStatus::Ok;
}
void Dump(NBitStream::TBitStream& bs) override {
EXPECT_EQ(EncCalls, ExpCalls);
}
uint32_t GetConsumption() const noexcept override {
return 0;
}
private:
const size_t ExpCalls;
size_t EncCalls = 0;
};
class TPartEncoder4 : public IBitStreamPartEncoder {
public:
TPartEncoder4() = default;
EStatus Encode(void* frameData, TBitAllocHandler& ba) override {
if (EncCalls == 0) {
EncCalls++;
return EStatus::Repeat;
}
return EStatus::Ok;
}
void Dump(NBitStream::TBitStream& bs) override {
EXPECT_EQ(EncCalls, 1);
}
uint32_t GetConsumption() const noexcept override {
return 0;
}
private:
size_t EncCalls = 0;
};
TEST(BsEncode, SimpleAlloc) {
std::vector<IBitStreamPartEncoder::TPtr> encoders;
encoders.emplace_back(std::make_unique<TPartEncoder1>(1));
encoders.emplace_back(std::make_unique<TPartEncoder2<SomeBitFn1>>(8));
encoders.emplace_back(std::make_unique<TPartEncoder3>(1));
NBitStream::TBitStream bs;
TBitStreamEncoder encoder(std::move(encoders));
encoder.Do(nullptr, bs);
EXPECT_EQ(bs.GetSizeInBits(), 1000);
}
TEST(BsEncode, AllocWithRepeat) {
std::vector<IBitStreamPartEncoder::TPtr> encoders;
encoders.emplace_back(std::make_unique<TPartEncoder1>(2));
encoders.emplace_back(std::make_unique<TPartEncoder2<SomeBitFn1>>(16));
encoders.emplace_back(std::make_unique<TPartEncoder3>(2));
encoders.emplace_back(std::make_unique<TPartEncoder4>());
NBitStream::TBitStream bs;
TBitStreamEncoder encoder(std::move(encoders));
encoder.Do(nullptr, bs);
EXPECT_EQ(bs.GetSizeInBits(), 1000);
}
TEST(BsEncode, NotExactAlloc) {
std::vector<IBitStreamPartEncoder::TPtr> encoders;
encoders.emplace_back(std::make_unique<TPartEncoder1>(1));
encoders.emplace_back(std::make_unique<TPartEncoder2<SomeBitFn2>>(11));
encoders.emplace_back(std::make_unique<TPartEncoder3>(1));
NBitStream::TBitStream bs;
TBitStreamEncoder encoder(std::move(encoders));
encoder.Do(nullptr, bs);
EXPECT_EQ(bs.GetSizeInBits(), 993);
}
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