/*-------------------------------------------------------------------------
 * drawElements Quality Program Tester Core
 * ----------------------------------------
 *
 * Copyright 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 *//*!
 * \file
 * \brief Test Log C++ Wrapper.
 *//*--------------------------------------------------------------------*/

#include "tcuTestLog.hpp"
#include "tcuTextureUtil.hpp"
#include "tcuSurface.hpp"
#include "deMath.h"

#include <limits>

namespace tcu
{

class LogWriteFailedError : public ResourceError
{
public:
	LogWriteFailedError (void) : ResourceError("Writing to test log failed") {}
};

enum
{
	MAX_IMAGE_SIZE_2D		= 4096,
	MAX_IMAGE_SIZE_3D		= 128
};

// LogImage

LogImage::LogImage (const std::string& name, const std::string& description, const Surface& surface, qpImageCompressionMode compression)
	: m_name		(name)
	, m_description	(description)
	, m_access		(surface.getAccess())
	, m_scale		(1.0f, 1.0f, 1.0f, 1.0f)
	, m_bias		(0.0f, 0.0f, 0.0f, 0.0f)
	, m_compression	(compression)
{
}

LogImage::LogImage (const std::string& name, const std::string& description, const ConstPixelBufferAccess& access, qpImageCompressionMode compression)
	: m_name		(name)
	, m_description	(description)
	, m_access		(access)
	, m_scale		(1.0f, 1.0f, 1.0f, 1.0f)
	, m_bias		(0.0f, 0.0f, 0.0f, 0.0f)
	, m_compression	(compression)
{
	computePixelScaleBias(access, m_scale, m_bias);
}

// MessageBuilder

MessageBuilder::MessageBuilder (const MessageBuilder& other)
	: m_log(other.m_log)
{
	m_str.str(other.m_str.str());
}

MessageBuilder& MessageBuilder::operator= (const MessageBuilder& other)
{
	m_log = other.m_log;
	m_str.str(other.m_str.str());
	return *this;
}

TestLog& MessageBuilder::operator<< (const TestLog::EndMessageToken&)
{
	m_log->writeMessage(m_str.str().c_str());
	return *m_log;
}

// SampleBuilder

TestLog& SampleBuilder::operator<< (const TestLog::EndSampleToken&)
{
	m_log->startSample();

	for (std::vector<Value>::const_iterator val = m_values.begin(); val != m_values.end(); ++val)
	{
		if (val->type == Value::TYPE_FLOAT64)
			m_log->writeSampleValue(val->value.float64);
		else if (val->type == Value::TYPE_INT64)
			m_log->writeSampleValue(val->value.int64);
		else
			DE_ASSERT(false);
	}

	m_log->endSample();

	return *m_log;
}

// TestLog

TestLog::TestLog (const char* fileName, deUint32 flags)
	: m_log(qpTestLog_createFileLog(fileName, flags))
{
	if (!m_log)
		throw ResourceError(std::string("Failed to open test log file '") + fileName + "'");
}

TestLog::~TestLog (void)
{
	qpTestLog_destroy(m_log);
}

void TestLog::writeMessage (const char* msgStr)
{
	if (qpTestLog_writeText(m_log, DE_NULL, DE_NULL, QP_KEY_TAG_LAST, msgStr) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::startImageSet (const char* name, const char* description)
{
	if (qpTestLog_startImageSet(m_log, name, description) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::endImageSet (void)
{
	if (qpTestLog_endImageSet(m_log) == DE_FALSE)
		throw LogWriteFailedError();
}

template <int Size>
static Vector<int, Size> computeScaledSize (const Vector<int, Size>& imageSize, int maxSize)
{
	bool allInRange = true;
	for (int i = 0; i < Size; i++)
		allInRange = allInRange && (imageSize[i] <= maxSize);

	if (allInRange)
		return imageSize;
	else
	{
		float d = 1.0f;
		for (int i = 0; i < Size; i++)
			d = de::max(d, (float)imageSize[i] / (float)maxSize);

		Vector<int, Size> res;
		for (int i = 0; i < Size; i++)
			res[i] = deRoundFloatToInt32((float)imageSize[i] / d);

		return res;
	}
}

void TestLog::writeImage (const char* name, const char* description, const ConstPixelBufferAccess& access, const Vec4& pixelScale, const Vec4& pixelBias, qpImageCompressionMode compressionMode)
{
	const TextureFormat&	format		= access.getFormat();
	int						width		= access.getWidth();
	int						height		= access.getHeight();
	int						depth		= access.getDepth();

	// Do not bother with preprocessing if images are not stored
	if ((qpTestLog_getLogFlags(m_log) & QP_TEST_LOG_EXCLUDE_IMAGES) != 0)
		return;

	if (depth == 1 && format.type == TextureFormat::UNORM_INT8
		&& width <= MAX_IMAGE_SIZE_2D && height <= MAX_IMAGE_SIZE_2D
		&& (format.order == TextureFormat::RGB || format.order == TextureFormat::RGBA)
		&& access.getPixelPitch() == access.getFormat().getPixelSize()
		&& pixelBias[0] == 0.0f && pixelBias[1] == 0.0f && pixelBias[2] == 0.0f && pixelBias[3] == 0.0f
		&& pixelScale[0] == 1.0f && pixelScale[1] == 1.0f && pixelScale[2] == 1.0f && pixelScale[3] == 1.0f)
	{
		// Fast-path.
		bool isRGBA = format.order == TextureFormat::RGBA;

		writeImage(name, description, compressionMode,
				   isRGBA ? QP_IMAGE_FORMAT_RGBA8888 : QP_IMAGE_FORMAT_RGB888,
				   width, height, access.getRowPitch(), access.getDataPtr());
	}
	else if (depth == 1)
	{
		Sampler				sampler			(Sampler::CLAMP_TO_EDGE, Sampler::CLAMP_TO_EDGE, Sampler::CLAMP_TO_EDGE, Sampler::LINEAR, Sampler::NEAREST);
		IVec2				logImageSize	= computeScaledSize(IVec2(width, height), MAX_IMAGE_SIZE_2D);
		tcu::TextureLevel	logImage		(TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8), logImageSize.x(), logImageSize.y(), 1);
		PixelBufferAccess	logImageAccess	= logImage.getAccess();
		std::ostringstream	longDesc;

		longDesc << description << " (p' = p * " << pixelScale << " + " << pixelBias << ")";

		for (int y = 0; y < logImage.getHeight(); y++)
		{
			for (int x = 0; x < logImage.getWidth(); x++)
			{
				float	yf	= ((float)y + 0.5f) / (float)logImage.getHeight();
				float	xf	= ((float)x + 0.5f) / (float)logImage.getWidth();
				Vec4	s	= access.sample2D(sampler, sampler.minFilter, xf, yf, 0)*pixelScale + pixelBias;

				logImageAccess.setPixel(s, x, y);
			}
		}

		writeImage(name, longDesc.str().c_str(), compressionMode, QP_IMAGE_FORMAT_RGBA8888,
				   logImageAccess.getWidth(), logImageAccess.getHeight(), logImageAccess.getRowPitch(),
				   logImageAccess.getDataPtr());
	}
	else
	{
		// Isometric splat volume rendering.
		const float			blendFactor			= 0.85f;
		IVec3				scaledSize			= computeScaledSize(IVec3(width, height, depth), MAX_IMAGE_SIZE_3D);
		int					w					= scaledSize.x();
		int					h					= scaledSize.y();
		int					d					= scaledSize.z();
		int					logImageW			= w+d - 1;
		int					logImageH			= w+d+h;
		std::vector<float>	blendImage			(logImageW*logImageH*4, 0.0f);
		PixelBufferAccess	blendImageAccess	(TextureFormat(TextureFormat::RGBA, TextureFormat::FLOAT), logImageW, logImageH, 1, &blendImage[0]);
		tcu::TextureLevel	logImage			(TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8), logImageW, logImageH, 1);
		PixelBufferAccess	logImageAccess		= logImage.getAccess();
		Sampler				sampler				(Sampler::CLAMP_TO_EDGE, Sampler::CLAMP_TO_EDGE, Sampler::CLAMP_TO_EDGE, Sampler::NEAREST, Sampler::NEAREST);
		std::ostringstream	longDesc;

		// \note Back-to-front.
		for (int z = d-1; z >= 0; z--)
		{
			for (int y = 0; y < h; y++)
			{
				for (int x = 0; x < w; x++)
				{
					int		px	= w - (x + 1) + z;
					int		py	= (w + d + h) - (x + y + z + 1);

					float	xf	= ((float)x + 0.5f) / (float)w;
					float	yf	= ((float)y + 0.5f) / (float)h;
					float	zf	= ((float)z + 0.5f) / (float)d;

					Vec4	p	= blendImageAccess.getPixel(px, py);
					Vec4	s	= access.sample3D(sampler, sampler.minFilter, xf, yf, zf);
					Vec4	b	= s + p*blendFactor;

					blendImageAccess.setPixel(b, px, py);
				}
			}
		}

		// Scale blend image nicely.
		longDesc << description << " (p' = p * " << pixelScale << " + " << pixelBias << ")";

		// Write to final image.
		tcu::clear(logImageAccess, tcu::IVec4(0x33, 0x66, 0x99, 0xff));

		for (int z = 0; z < d; z++)
		{
			for (int y = 0; y < h; y++)
			{
				for (int x = 0; x < w; x++)
				{
					if (z != 0 && !(x == 0 || y == h-1 || y == h-2))
						continue;

					int		px	= w - (x + 1) + z;
					int		py	= (w + d + h) - (x + y + z + 1);
					Vec4	s	= blendImageAccess.getPixel(px, py)*pixelScale + pixelBias;

					logImageAccess.setPixel(s, px, py);
				}
			}
		}

		writeImage(name, longDesc.str().c_str(), compressionMode, QP_IMAGE_FORMAT_RGBA8888,
				   logImageAccess.getWidth(), logImageAccess.getHeight(), logImageAccess.getRowPitch(),
				   logImageAccess.getDataPtr());
	}
}

void TestLog::writeImage (const char* name, const char* description, qpImageCompressionMode compressionMode, qpImageFormat format, int width, int height, int stride, const void* data)
{
	if (qpTestLog_writeImage(m_log, name, description, compressionMode, format, width, height, stride, data) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::startSection (const char* name, const char* description)
{
	if (qpTestLog_startSection(m_log, name, description) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::endSection (void)
{
	if (qpTestLog_endSection(m_log) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::startShaderProgram (bool linkOk, const char* linkInfoLog)
{
	if (qpTestLog_startShaderProgram(m_log, linkOk?DE_TRUE:DE_FALSE, linkInfoLog) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::endShaderProgram (void)
{
	if (qpTestLog_endShaderProgram(m_log) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::writeShader (qpShaderType type, const char* source, bool compileOk, const char* infoLog)
{
	if (qpTestLog_writeShader(m_log, type, source, compileOk?DE_TRUE:DE_FALSE, infoLog) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::writeKernelSource (const char* source)
{
	if (qpTestLog_writeKernelSource(m_log, source) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::writeCompileInfo (const char* name, const char* description, bool compileOk, const char* infoLog)
{
	if (qpTestLog_writeCompileInfo(m_log, name, description, compileOk ? DE_TRUE : DE_FALSE, infoLog) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::writeFloat (const char* name, const char* description, const char* unit, qpKeyValueTag tag, float value)
{
	if (qpTestLog_writeFloat(m_log, name, description, unit, tag, value) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::writeInteger (const char* name, const char* description, const char* unit, qpKeyValueTag tag, deInt64 value)
{
	if (qpTestLog_writeInteger(m_log, name, description, unit, tag, value) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::startEglConfigSet (const char* name, const char* description)
{
	if (qpTestLog_startEglConfigSet(m_log, name, description) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::writeEglConfig (const qpEglConfigInfo* config)
{
	if (qpTestLog_writeEglConfig(m_log, config) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::endEglConfigSet (void)
{
	if (qpTestLog_endEglConfigSet(m_log) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::startCase (const char* testCasePath, qpTestCaseType testCaseType)
{
	if (qpTestLog_startCase(m_log, testCasePath, testCaseType) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::endCase (qpTestResult result, const char* description)
{
	if (qpTestLog_endCase(m_log, result, description) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::terminateCase (qpTestResult result)
{
	if (qpTestLog_terminateCase(m_log, result) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::startSampleList (const std::string& name, const std::string& description)
{
	if (qpTestLog_startSampleList(m_log, name.c_str(), description.c_str()) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::startSampleInfo (void)
{
	if (qpTestLog_startSampleInfo(m_log) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::writeValueInfo (const std::string& name, const std::string& description, const std::string& unit, qpSampleValueTag tag)
{
	if (qpTestLog_writeValueInfo(m_log, name.c_str(), description.c_str(), unit.empty() ? DE_NULL : unit.c_str(), tag) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::endSampleInfo (void)
{
	if (qpTestLog_endSampleInfo(m_log) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::startSample (void)
{
	if (qpTestLog_startSample(m_log) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::writeSampleValue (double value)
{
	if (qpTestLog_writeValueFloat(m_log, value) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::writeSampleValue (deInt64 value)
{
	if (qpTestLog_writeValueInteger(m_log, value) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::endSample (void)
{
	if (qpTestLog_endSample(m_log) == DE_FALSE)
		throw LogWriteFailedError();
}

void TestLog::endSampleList (void)
{
	if (qpTestLog_endSampleList(m_log) == DE_FALSE)
		throw LogWriteFailedError();
}

const TestLog::BeginMessageToken		TestLog::Message			= TestLog::BeginMessageToken();
const TestLog::EndMessageToken			TestLog::EndMessage			= TestLog::EndMessageToken();
const TestLog::EndImageSetToken			TestLog::EndImageSet		= TestLog::EndImageSetToken();
const TestLog::EndSectionToken			TestLog::EndSection			= TestLog::EndSectionToken();
const TestLog::EndShaderProgramToken	TestLog::EndShaderProgram	= TestLog::EndShaderProgramToken();
const TestLog::SampleInfoToken			TestLog::SampleInfo			= TestLog::SampleInfoToken();
const TestLog::EndSampleInfoToken		TestLog::EndSampleInfo		= TestLog::EndSampleInfoToken();
const TestLog::BeginSampleToken			TestLog::Sample				= TestLog::BeginSampleToken();
const TestLog::EndSampleToken			TestLog::EndSample			= TestLog::EndSampleToken();
const TestLog::EndSampleListToken		TestLog::EndSampleList		= TestLog::EndSampleListToken();

} // tcu