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113 lines
4.8 KiB
Plaintext
113 lines
4.8 KiB
Plaintext
/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of NVIDIA CORPORATION nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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// Implements interlace NV12 frames batch resize
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#include <cuda.h>
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#include <cuda_runtime.h>
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#include "resize_convert.h"
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__global__ static void resizeNV12BatchKernel(cudaTextureObject_t texSrcLuma,
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cudaTextureObject_t texSrcChroma,
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uint8_t *pDstNv12, int nSrcWidth,
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int nSrcHeight, int nDstPitch,
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int nDstWidth, int nDstHeight,
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int nBatchSize) {
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int x = threadIdx.x + blockIdx.x * blockDim.x;
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int y = threadIdx.y + blockIdx.y * blockDim.y;
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int px = x * 2, py = y * 2;
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if ((px + 1) >= nDstWidth || (py + 1) >= nDstHeight) return;
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float fxScale = 1.0f * nSrcWidth / nDstWidth;
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float fyScale = 1.0f * nSrcHeight / nDstHeight;
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uint8_t *p = pDstNv12 + px + py * nDstPitch;
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int hh = nDstHeight * 3 / 2;
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int nByte = nDstPitch * hh;
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int px_fxScale = px * fxScale;
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int px_fxScale_1 = (px + 1) * fxScale;
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int py_fyScale = py * fyScale;
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int py_fyScale_1 = (py + 1) * fyScale;
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for (int i = blockIdx.z; i < nBatchSize; i+=gridDim.z) {
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*(uchar2 *)p = make_uchar2(tex2D<uint8_t>(texSrcLuma, px_fxScale, py_fyScale),
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tex2D<uint8_t>(texSrcLuma, px_fxScale_1, py_fyScale));
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*(uchar2 *)(p + nDstPitch) =
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make_uchar2(tex2D<uint8_t>(texSrcLuma, px_fxScale, py_fyScale_1),
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tex2D<uint8_t>(texSrcLuma, px_fxScale_1, py_fyScale_1));
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*(uchar2 *)(p + (nDstHeight - y) * nDstPitch) = tex2D<uchar2>(
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texSrcChroma, x * fxScale, (hh * i + nDstHeight + y) * fyScale);
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p += nByte;
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py += hh;
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}
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}
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void resizeNV12Batch(uint8_t *dpSrc, int nSrcPitch, int nSrcWidth,
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int nSrcHeight, uint8_t *dpDst, int nDstPitch,
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int nDstWidth, int nDstHeight, int nBatchSize,
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cudaStream_t stream) {
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int hhSrc = ceilf(nSrcHeight * 3.0f / 2.0f);
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cudaResourceDesc resDesc = {};
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resDesc.resType = cudaResourceTypePitch2D;
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resDesc.res.pitch2D.devPtr = dpSrc;
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resDesc.res.pitch2D.desc = cudaCreateChannelDesc<uint8_t>();
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resDesc.res.pitch2D.width = nSrcWidth;
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resDesc.res.pitch2D.height = hhSrc * nBatchSize;
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resDesc.res.pitch2D.pitchInBytes = nSrcPitch;
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cudaTextureDesc texDesc = {};
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texDesc.filterMode = cudaFilterModePoint;
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texDesc.readMode = cudaReadModeElementType;
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cudaTextureObject_t texLuma = 0;
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checkCudaErrors(cudaCreateTextureObject(&texLuma, &resDesc, &texDesc, NULL));
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resDesc.res.pitch2D.desc = cudaCreateChannelDesc<uchar2>();
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resDesc.res.pitch2D.width /= 2;
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cudaTextureObject_t texChroma = 0;
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checkCudaErrors(cudaCreateTextureObject(&texChroma, &resDesc, &texDesc, NULL));
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dim3 block(32, 32, 1);
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size_t blockDimZ = nBatchSize;
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// Restricting blocks in Z-dim till 32 to not launch too many blocks
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blockDimZ = (blockDimZ > 32) ? 32 : blockDimZ;
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dim3 grid((nDstWidth / 2 + block.x) / block.x,
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(nDstHeight / 2 + block.y) / block.y, blockDimZ);
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resizeNV12BatchKernel<<<grid, block, 0, stream>>>(
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texLuma, texChroma, dpDst, nSrcWidth, nSrcHeight, nDstPitch, nDstWidth,
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nDstHeight, nBatchSize);
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checkCudaErrors(cudaDestroyTextureObject(texLuma));
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checkCudaErrors(cudaDestroyTextureObject(texChroma));
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}
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