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55 lines
2.2 KiB
Plaintext
55 lines
2.2 KiB
Plaintext
/*
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* Copyright 2017-2020 NVIDIA Corporation. All rights reserved.
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*
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* Please refer to the NVIDIA end user license agreement (EULA) associated
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* with this source code for terms and conditions that govern your use of
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* this software. Any use, reproduction, disclosure, or distribution of
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* this software and related documentation outside the terms of the EULA
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* is strictly prohibited.
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*
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*/
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#include <cuda_runtime.h>
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#include <stdint.h>
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#include <stdio.h>
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static __global__ void ConvertUInt8ToUInt16Kernel(uint8_t *dpUInt8, uint16_t *dpUInt16, int nSrcPitch, int nDestPitch, int nWidth, int nHeight)
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{
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int x = blockIdx.x * blockDim.x + threadIdx.x,
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y = blockIdx.y * blockDim.y + threadIdx.y;
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if (x >= nWidth || y >= nHeight)
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{
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return;
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}
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int destStrideInPixels = nDestPitch / (sizeof(uint16_t));
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*(uchar2 *)&dpUInt16[y * destStrideInPixels + x] = uchar2{ 0, dpUInt8[y * nSrcPitch + x] };
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}
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static __global__ void ConvertUInt16ToUInt8Kernel(uint16_t *dpUInt16, uint8_t *dpUInt8, int nSrcPitch, int nDestPitch, int nWidth, int nHeight)
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{
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int x = blockIdx.x * blockDim.x + threadIdx.x,
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y = blockIdx.y * blockDim.y + threadIdx.y;
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if (x >= nWidth || y >= nHeight)
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{
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return;
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}
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int srcStrideInPixels = nSrcPitch / (sizeof(uint16_t));
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dpUInt8[y * nDestPitch + x] = ((uchar2 *)&dpUInt16[y * srcStrideInPixels + x])->y;
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}
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void ConvertUInt8ToUInt16(uint8_t *dpUInt8, uint16_t *dpUInt16, int nSrcPitch, int nDestPitch, int nWidth, int nHeight)
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{
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dim3 blockSize(16, 16, 1);
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dim3 gridSize(((uint32_t)nWidth + blockSize.x - 1) / blockSize.x, ((uint32_t)nHeight + blockSize.y - 1) / blockSize.y, 1);
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ConvertUInt8ToUInt16Kernel <<< gridSize, blockSize >>>(dpUInt8, dpUInt16, nSrcPitch, nDestPitch, nWidth, nHeight);
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}
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void ConvertUInt16ToUInt8(uint16_t *dpUInt16, uint8_t *dpUInt8, int nSrcPitch, int nDestPitch, int nWidth, int nHeight)
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{
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dim3 blockSize(16, 16, 1);
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dim3 gridSize(((uint32_t)nWidth + blockSize.x - 1) / blockSize.x, ((uint32_t)nHeight + blockSize.y - 1) / blockSize.y, 1);
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ConvertUInt16ToUInt8Kernel <<<gridSize, blockSize >>>(dpUInt16, dpUInt8, nSrcPitch, nDestPitch, nWidth, nHeight);
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}
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