mirror of
https://github.com/NVIDIA/cuda-samples.git
synced 2024-11-28 14:59:19 +08:00
424 lines
14 KiB
C++
424 lines
14 KiB
C++
/* Copyright (c) 2019, 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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// This sample needs at least CUDA 10.1.
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// It demonstrates usages of the nvJPEG library
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#ifndef NV_JPEG_EXAMPLE
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#define NV_JPEG_EXAMPLE
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#ifdef _WIN64
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#include <windows.h>
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#endif
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#include "cuda_runtime.h"
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#include "nvjpeg.h"
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#include "helper_cuda.h"
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#include "helper_timer.h"
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#include <cstdlib>
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#include <fstream>
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#include <iostream>
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#include <sstream>
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#include <string>
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#include <vector>
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#include <string.h> // strcmpi
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#ifndef _WIN64
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#include <sys/time.h> // timings
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#include <dirent.h> // linux dir traverse
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#include <unistd.h>
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#endif
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#include <sys/stat.h>
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#include <sys/types.h>
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// write bmp, input - RGB, device
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int writeBMP(const char *filename, const unsigned char *d_chanR, int pitchR,
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const unsigned char *d_chanG, int pitchG,
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const unsigned char *d_chanB, int pitchB, int width, int height) {
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unsigned int headers[13];
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FILE *outfile;
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int extrabytes;
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int paddedsize;
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int x;
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int y;
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int n;
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int red, green, blue;
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std::vector<unsigned char> vchanR(height * width);
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std::vector<unsigned char> vchanG(height * width);
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std::vector<unsigned char> vchanB(height * width);
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unsigned char *chanR = vchanR.data();
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unsigned char *chanG = vchanG.data();
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unsigned char *chanB = vchanB.data();
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checkCudaErrors(cudaMemcpy2D(chanR, (size_t)width, d_chanR, (size_t)pitchR,
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width, height, cudaMemcpyDeviceToHost));
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checkCudaErrors(cudaMemcpy2D(chanG, (size_t)width, d_chanG, (size_t)pitchR,
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width, height, cudaMemcpyDeviceToHost));
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checkCudaErrors(cudaMemcpy2D(chanB, (size_t)width, d_chanB, (size_t)pitchR,
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width, height, cudaMemcpyDeviceToHost));
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extrabytes =
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4 - ((width * 3) % 4); // How many bytes of padding to add to each
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// horizontal line - the size of which must
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// be a multiple of 4 bytes.
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if (extrabytes == 4) extrabytes = 0;
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paddedsize = ((width * 3) + extrabytes) * height;
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// Headers...
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// Note that the "BM" identifier in bytes 0 and 1 is NOT included in these
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// "headers".
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headers[0] = paddedsize + 54; // bfSize (whole file size)
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headers[1] = 0; // bfReserved (both)
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headers[2] = 54; // bfOffbits
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headers[3] = 40; // biSize
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headers[4] = width; // biWidth
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headers[5] = height; // biHeight
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// Would have biPlanes and biBitCount in position 6, but they're shorts.
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// It's easier to write them out separately (see below) than pretend
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// they're a single int, especially with endian issues...
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headers[7] = 0; // biCompression
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headers[8] = paddedsize; // biSizeImage
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headers[9] = 0; // biXPelsPerMeter
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headers[10] = 0; // biYPelsPerMeter
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headers[11] = 0; // biClrUsed
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headers[12] = 0; // biClrImportant
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if (!(outfile = fopen(filename, "wb"))) {
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std::cerr << "Cannot open file: " << filename << std::endl;
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return 1;
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}
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//
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// Headers begin...
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// When printing ints and shorts, we write out 1 character at a time to avoid
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// endian issues.
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//
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fprintf(outfile, "BM");
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for (n = 0; n <= 5; n++) {
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fprintf(outfile, "%c", headers[n] & 0x000000FF);
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fprintf(outfile, "%c", (headers[n] & 0x0000FF00) >> 8);
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fprintf(outfile, "%c", (headers[n] & 0x00FF0000) >> 16);
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fprintf(outfile, "%c", (headers[n] & (unsigned int)0xFF000000) >> 24);
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}
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// These next 4 characters are for the biPlanes and biBitCount fields.
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fprintf(outfile, "%c", 1);
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fprintf(outfile, "%c", 0);
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fprintf(outfile, "%c", 24);
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fprintf(outfile, "%c", 0);
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for (n = 7; n <= 12; n++) {
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fprintf(outfile, "%c", headers[n] & 0x000000FF);
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fprintf(outfile, "%c", (headers[n] & 0x0000FF00) >> 8);
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fprintf(outfile, "%c", (headers[n] & 0x00FF0000) >> 16);
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fprintf(outfile, "%c", (headers[n] & (unsigned int)0xFF000000) >> 24);
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}
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//
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// Headers done, now write the data...
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//
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for (y = height - 1; y >= 0;
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y--) // BMP image format is written from bottom to top...
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{
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for (x = 0; x <= width - 1; x++) {
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red = chanR[y * width + x];
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green = chanG[y * width + x];
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blue = chanB[y * width + x];
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if (red > 255) red = 255;
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if (red < 0) red = 0;
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if (green > 255) green = 255;
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if (green < 0) green = 0;
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if (blue > 255) blue = 255;
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if (blue < 0) blue = 0;
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// Also, it's written in (b,g,r) format...
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fprintf(outfile, "%c", blue);
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fprintf(outfile, "%c", green);
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fprintf(outfile, "%c", red);
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}
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if (extrabytes) // See above - BMP lines must be of lengths divisible by 4.
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{
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for (n = 1; n <= extrabytes; n++) {
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fprintf(outfile, "%c", 0);
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}
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}
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}
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fclose(outfile);
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return 0;
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}
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// write bmp, input - RGB, device
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int writeBMPi(const char *filename, const unsigned char *d_RGB, int pitch,
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int width, int height) {
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unsigned int headers[13];
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FILE *outfile;
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int extrabytes;
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int paddedsize;
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int x;
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int y;
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int n;
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int red, green, blue;
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std::vector<unsigned char> vchanRGB(height * width * 3);
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unsigned char *chanRGB = vchanRGB.data();
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checkCudaErrors(cudaMemcpy2D(chanRGB, (size_t)width * 3, d_RGB, (size_t)pitch,
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width * 3, height, cudaMemcpyDeviceToHost));
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extrabytes =
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4 - ((width * 3) % 4); // How many bytes of padding to add to each
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// horizontal line - the size of which must
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// be a multiple of 4 bytes.
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if (extrabytes == 4) extrabytes = 0;
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paddedsize = ((width * 3) + extrabytes) * height;
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// Headers...
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// Note that the "BM" identifier in bytes 0 and 1 is NOT included in these
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// "headers".
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headers[0] = paddedsize + 54; // bfSize (whole file size)
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headers[1] = 0; // bfReserved (both)
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headers[2] = 54; // bfOffbits
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headers[3] = 40; // biSize
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headers[4] = width; // biWidth
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headers[5] = height; // biHeight
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// Would have biPlanes and biBitCount in position 6, but they're shorts.
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// It's easier to write them out separately (see below) than pretend
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// they're a single int, especially with endian issues...
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headers[7] = 0; // biCompression
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headers[8] = paddedsize; // biSizeImage
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headers[9] = 0; // biXPelsPerMeter
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headers[10] = 0; // biYPelsPerMeter
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headers[11] = 0; // biClrUsed
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headers[12] = 0; // biClrImportant
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if (!(outfile = fopen(filename, "wb"))) {
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std::cerr << "Cannot open file: " << filename << std::endl;
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return 1;
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}
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//
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// Headers begin...
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// When printing ints and shorts, we write out 1 character at a time to avoid
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// endian issues.
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//
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fprintf(outfile, "BM");
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for (n = 0; n <= 5; n++) {
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fprintf(outfile, "%c", headers[n] & 0x000000FF);
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fprintf(outfile, "%c", (headers[n] & 0x0000FF00) >> 8);
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fprintf(outfile, "%c", (headers[n] & 0x00FF0000) >> 16);
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fprintf(outfile, "%c", (headers[n] & (unsigned int)0xFF000000) >> 24);
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}
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// These next 4 characters are for the biPlanes and biBitCount fields.
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fprintf(outfile, "%c", 1);
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fprintf(outfile, "%c", 0);
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fprintf(outfile, "%c", 24);
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fprintf(outfile, "%c", 0);
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for (n = 7; n <= 12; n++) {
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fprintf(outfile, "%c", headers[n] & 0x000000FF);
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fprintf(outfile, "%c", (headers[n] & 0x0000FF00) >> 8);
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fprintf(outfile, "%c", (headers[n] & 0x00FF0000) >> 16);
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fprintf(outfile, "%c", (headers[n] & (unsigned int)0xFF000000) >> 24);
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}
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//
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// Headers done, now write the data...
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//
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for (y = height - 1; y >= 0;
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y--) // BMP image format is written from bottom to top...
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{
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for (x = 0; x <= width - 1; x++) {
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red = chanRGB[(y * width + x) * 3];
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green = chanRGB[(y * width + x) * 3 + 1];
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blue = chanRGB[(y * width + x) * 3 + 2];
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if (red > 255) red = 255;
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if (red < 0) red = 0;
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if (green > 255) green = 255;
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if (green < 0) green = 0;
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if (blue > 255) blue = 255;
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if (blue < 0) blue = 0;
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// Also, it's written in (b,g,r) format...
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fprintf(outfile, "%c", blue);
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fprintf(outfile, "%c", green);
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fprintf(outfile, "%c", red);
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}
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if (extrabytes) // See above - BMP lines must be of lengths divisible by 4.
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{
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for (n = 1; n <= extrabytes; n++) {
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fprintf(outfile, "%c", 0);
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}
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}
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}
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fclose(outfile);
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return 0;
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}
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int readInput(const std::string &sInputPath,
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std::vector<std::string> &filelist) {
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int error_code = 1;
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#ifndef _WIN64
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struct stat s;
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if (stat(sInputPath.c_str(), &s) == 0) {
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if (s.st_mode & S_IFREG) {
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filelist.push_back(sInputPath);
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} else if (s.st_mode & S_IFDIR) {
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// processing each file in directory
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DIR *dir_handle;
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struct dirent *dir;
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dir_handle = opendir(sInputPath.c_str());
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std::vector<std::string> filenames;
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if (dir_handle) {
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error_code = 0;
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while ((dir = readdir(dir_handle)) != NULL) {
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if (dir->d_type == DT_REG) {
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std::string sFileName = sInputPath + dir->d_name;
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filelist.push_back(sFileName);
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} else if (dir->d_type == DT_DIR) {
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std::string sname = dir->d_name;
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if (sname != "." && sname != "..") {
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readInput(sInputPath + sname + "/", filelist);
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}
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}
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}
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closedir(dir_handle);
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} else {
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std::cout << "Cannot open input directory: " << sInputPath << std::endl;
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return error_code;
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}
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} else {
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std::cout << "Cannot open input: " << sInputPath << std::endl;
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return error_code;
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}
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} else {
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std::cout << "Cannot find input path " << sInputPath << std::endl;
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return error_code;
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}
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#else
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std::string search_path = sInputPath + "/*.*";
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WIN32_FIND_DATA fd;
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HANDLE hFind = ::FindFirstFile(search_path.c_str(), &fd);
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if (hFind != INVALID_HANDLE_VALUE) {
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do {
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// read all (real) files in current folder
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// , delete '!' read other 2 default folder . and ..
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if (!(fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {
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std::string temp(sInputPath + "\\" + fd.cFileName);
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filelist.push_back(temp);
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}
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} while (::FindNextFile(hFind, &fd));
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::FindClose(hFind);
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} else {
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std::cout << "Cannot open input directory: " << sInputPath << std::endl;
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return error_code;
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}
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#endif
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return 0;
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}
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int inputDirExists(const char *pathname) {
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struct stat info;
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if (stat(pathname, &info) != 0) {
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return 0; // Directory does not exists
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} else if (info.st_mode & S_IFDIR) {
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// is a directory
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return 1;
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} else {
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// is not a directory
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return 0;
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}
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}
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int getInputDir(std::string &input_dir, const char *executable_path) {
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int found = 0;
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if (executable_path != 0) {
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std::string executable_name = std::string(executable_path);
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#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
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// Windows path delimiter
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size_t delimiter_pos = executable_name.find_last_of('\\');
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executable_name.erase(0, delimiter_pos + 1);
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if (executable_name.rfind(".exe") != std::string::npos) {
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// we strip .exe, only if the .exe is found
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executable_name.resize(executable_name.size() - 4);
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}
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#else
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// Linux & OSX path delimiter
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size_t delimiter_pos = executable_name.find_last_of('/');
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executable_name.erase(0, delimiter_pos + 1);
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#endif
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// Search in default paths for input images.
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std::string pathname = "";
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const char *searchPath[] = {
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"./images", "../../../../Samples/<executable_name>/images",
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"../../../Samples/<executable_name>/images",
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"../../Samples/<executable_name>/images"};
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for (unsigned int i = 0; i < sizeof(searchPath) / sizeof(char *); ++i) {
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std::string pathname(searchPath[i]);
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size_t executable_name_pos = pathname.find("<executable_name>");
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// If there is executable_name variable in the searchPath
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// replace it with the value
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if (executable_name_pos != std::string::npos) {
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pathname.replace(executable_name_pos, strlen("<executable_name>"),
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executable_name);
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}
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if (inputDirExists(pathname.c_str())) {
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input_dir = pathname + "/";
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found = 1;
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break;
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}
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}
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}
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return found;
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}
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#endif
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