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/*
* Copyright 2015 The Etc2Comp Authors.
*
* 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.
*/
#include "EtcConfig.h"
#include "Etc.h"
#include "EtcFilter.h"
#include <string.h>
namespace Etc
{
// ----------------------------------------------------------------------------------------------------
// C-style inteface to the encoder
//
void Encode(float *a_pafSourceRGBA,
unsigned int a_uiSourceWidth,
unsigned int a_uiSourceHeight,
Image::Format a_format,
ErrorMetric a_eErrMetric,
float a_fEffort,
unsigned int a_uiJobs,
unsigned int a_uiMaxJobs,
unsigned char **a_ppaucEncodingBits,
unsigned int *a_puiEncodingBitsBytes,
unsigned int *a_puiExtendedWidth,
unsigned int *a_puiExtendedHeight,
int *a_piEncodingTime_ms, bool a_bVerboseOutput)
{
Image image(a_pafSourceRGBA, a_uiSourceWidth,
a_uiSourceHeight,
a_eErrMetric);
image.m_bVerboseOutput = a_bVerboseOutput;
image.Encode(a_format, a_eErrMetric, a_fEffort, a_uiJobs, a_uiMaxJobs);
*a_ppaucEncodingBits = image.GetEncodingBits();
*a_puiEncodingBitsBytes = image.GetEncodingBitsBytes();
*a_puiExtendedWidth = image.GetExtendedWidth();
*a_puiExtendedHeight = image.GetExtendedHeight();
*a_piEncodingTime_ms = image.GetEncodingTimeMs();
}
void EncodeMipmaps(float *a_pafSourceRGBA,
unsigned int a_uiSourceWidth,
unsigned int a_uiSourceHeight,
Image::Format a_format,
ErrorMetric a_eErrMetric,
float a_fEffort,
unsigned int a_uiJobs,
unsigned int a_uiMaxJobs,
unsigned int a_uiMaxMipmaps,
unsigned int a_uiMipFilterFlags,
RawImage* a_pMipmapImages,
int *a_piEncodingTime_ms,
bool a_bVerboseOutput)
{
auto mipWidth = a_uiSourceWidth;
auto mipHeight = a_uiSourceHeight;
int totalEncodingTime = 0;
for(unsigned int mip = 0; mip < a_uiMaxMipmaps && mipWidth >= 1 && mipHeight >= 1; mip++)
{
float* pImageData = nullptr;
float* pMipImage = nullptr;
if(mip == 0)
{
pImageData = a_pafSourceRGBA;
}
else
{
pMipImage = new float[mipWidth*mipHeight*4];
if(FilterTwoPass(a_pafSourceRGBA, a_uiSourceWidth, a_uiSourceHeight, pMipImage, mipWidth, mipHeight, a_uiMipFilterFlags, Etc::FilterLanczos3) )
{
pImageData = pMipImage;
}
}
if ( pImageData )
{
Image image(pImageData, mipWidth, mipHeight, a_eErrMetric);
image.m_bVerboseOutput = a_bVerboseOutput;
image.Encode(a_format, a_eErrMetric, a_fEffort, a_uiJobs, a_uiMaxJobs);
a_pMipmapImages[mip].paucEncodingBits = std::shared_ptr<unsigned char>(image.GetEncodingBits(), [](unsigned char *p) { delete[] p; });
a_pMipmapImages[mip].uiEncodingBitsBytes = image.GetEncodingBitsBytes();
a_pMipmapImages[mip].uiExtendedWidth = image.GetExtendedWidth();
a_pMipmapImages[mip].uiExtendedHeight = image.GetExtendedHeight();
totalEncodingTime += image.GetEncodingTimeMs();
}
if(pMipImage)
{
delete[] pMipImage;
}
if (!pImageData)
{
break;
}
mipWidth >>= 1;
mipHeight >>= 1;
}
*a_piEncodingTime_ms = totalEncodingTime;
}
// ----------------------------------------------------------------------------------------------------
//
}
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