129 lines
3.6 KiB
C++
129 lines
3.6 KiB
C++
/*
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* Copyright 2015 The Etc2Comp Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "EtcConfig.h"
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#include "Etc.h"
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#include "EtcFilter.h"
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#include <string.h>
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namespace Etc
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{
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// ----------------------------------------------------------------------------------------------------
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// C-style inteface to the encoder
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//
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void Encode(float *a_pafSourceRGBA,
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unsigned int a_uiSourceWidth,
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unsigned int a_uiSourceHeight,
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Image::Format a_format,
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ErrorMetric a_eErrMetric,
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float a_fEffort,
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unsigned int a_uiJobs,
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unsigned int a_uiMaxJobs,
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unsigned char **a_ppaucEncodingBits,
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unsigned int *a_puiEncodingBitsBytes,
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unsigned int *a_puiExtendedWidth,
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unsigned int *a_puiExtendedHeight,
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int *a_piEncodingTime_ms, bool a_bVerboseOutput)
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{
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Image image(a_pafSourceRGBA, a_uiSourceWidth,
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a_uiSourceHeight,
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a_eErrMetric);
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image.m_bVerboseOutput = a_bVerboseOutput;
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image.Encode(a_format, a_eErrMetric, a_fEffort, a_uiJobs, a_uiMaxJobs);
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*a_ppaucEncodingBits = image.GetEncodingBits();
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*a_puiEncodingBitsBytes = image.GetEncodingBitsBytes();
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*a_puiExtendedWidth = image.GetExtendedWidth();
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*a_puiExtendedHeight = image.GetExtendedHeight();
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*a_piEncodingTime_ms = image.GetEncodingTimeMs();
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}
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void EncodeMipmaps(float *a_pafSourceRGBA,
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unsigned int a_uiSourceWidth,
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unsigned int a_uiSourceHeight,
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Image::Format a_format,
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ErrorMetric a_eErrMetric,
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float a_fEffort,
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unsigned int a_uiJobs,
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unsigned int a_uiMaxJobs,
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unsigned int a_uiMaxMipmaps,
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unsigned int a_uiMipFilterFlags,
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RawImage* a_pMipmapImages,
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int *a_piEncodingTime_ms,
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bool a_bVerboseOutput)
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{
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auto mipWidth = a_uiSourceWidth;
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auto mipHeight = a_uiSourceHeight;
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int totalEncodingTime = 0;
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for(unsigned int mip = 0; mip < a_uiMaxMipmaps && mipWidth >= 1 && mipHeight >= 1; mip++)
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{
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float* pImageData = nullptr;
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float* pMipImage = nullptr;
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if(mip == 0)
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{
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pImageData = a_pafSourceRGBA;
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}
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else
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{
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pMipImage = new float[mipWidth*mipHeight*4];
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if(FilterTwoPass(a_pafSourceRGBA, a_uiSourceWidth, a_uiSourceHeight, pMipImage, mipWidth, mipHeight, a_uiMipFilterFlags, Etc::FilterLanczos3) )
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{
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pImageData = pMipImage;
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}
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}
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if ( pImageData )
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{
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Image image(pImageData, mipWidth, mipHeight, a_eErrMetric);
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image.m_bVerboseOutput = a_bVerboseOutput;
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image.Encode(a_format, a_eErrMetric, a_fEffort, a_uiJobs, a_uiMaxJobs);
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a_pMipmapImages[mip].paucEncodingBits = std::shared_ptr<unsigned char>(image.GetEncodingBits(), [](unsigned char *p) { delete[] p; });
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a_pMipmapImages[mip].uiEncodingBitsBytes = image.GetEncodingBitsBytes();
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a_pMipmapImages[mip].uiExtendedWidth = image.GetExtendedWidth();
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a_pMipmapImages[mip].uiExtendedHeight = image.GetExtendedHeight();
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totalEncodingTime += image.GetEncodingTimeMs();
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}
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if(pMipImage)
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{
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delete[] pMipImage;
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}
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if (!pImageData)
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{
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break;
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}
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mipWidth >>= 1;
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mipHeight >>= 1;
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}
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*a_piEncodingTime_ms = totalEncodingTime;
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}
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// ----------------------------------------------------------------------------------------------------
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//
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}
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