c通过jpeglib进行jpeg编码 C++通过jpeglib进行jpeg编码 C++通过jpeglib进行jpeg编码，输入格式为rgb、yuv422、yuv444 #include stdio.h extern C { #include ../../src/jpeg_8c/jpeglib.h brief jpeg编码，输入格式为uyvy void write_YUV_JPEG_file (char * filename, unsigned char* yuvData, int quality, ...
C++通过jpeglib进行jpeg编码,输入格式为rgb、yuv422、yuv444 #include <stdio.h> extern "C"{ #include "../../src/jpeg_8c/jpeglib.h" } /** brief jpeg编码,输入格式为uyvy */ void write_YUV_JPEG_file (char * filename, unsigned char* yuvData, int quality, int image_width,int image_heigh...
jpeg_stdio_dest(&cinfo, outfile); cinfo.image_width = width; /* image width and height, in pixels */ cinfo.image_height = height; cinfo.input_components = 3; /* # of color components per pixel */ cinfo.in_color_space = JCS_RGB; /* colorspace of input image */ jpeg_set_def...
data = new BYTE cinfo.image_width*cinfo.image_height*cinfo.num_components]; 5、开始解压缩 jpeg_start_decompress(&cinfo); JSAMPROW row_pointer[1]; while (cinfo.output_scanline < cinfo.output_height) { row_pointer[0] = &data[(cinfo.output_height - cinfo.output_scanline-1)*cinfo.im...
Python envelope for the popular C library libjpeg for handling JPEG files. - martinbenes1996/jpeglib
jversion.h jmorecfg.h jpeglib.h 建立一个Win32空工程,然后加入以上文件,并在头部加入下面语句以便链接jpeglib #pragma comment(lib, "jpeg.lib") 即可编译通过。 而Cjpeg可以被改造成很多有用的工具,为我们免去了很多繁杂的工作。可谓是一举两得。
**/ #include "Jpeg.h" int DecodeJpeg2Bmp(const char* filename,void* outbuf,int bufsize,int* nBits,int* width,int* height) { if(filename == NULL) return -1; //声明并初始化解压缩对象,同时制定错误信息管理器 jpeg_decompress_struct cinfo = {0}; jpeg_error_mgr error = {0}; c...
JPEGlib是一个用于处理JPEG图像的开源库。JPEG是一种常见的图像压缩格式,在Web应用和数字摄影领域得到广泛应用。JPEGlib使开发者可以在他们的应用程序中读取、编辑和处理JPEG图像。本文将深入探讨JPEGlib的用法,逐步回答如何使用这个库来处理JPEG图像。 第一步:安装JPEGlib库 要开始使用JPEGlib,首先需要将它安装在计算机上。
extern "C" { #endif #endif /* Various constants determining the sizes of things.* All of these are specified by the JPEG standard, so don't change them * if you want to be compatible.*/ #define DCTSIZE 8 /* The basic DCT block is 8x8 samples */ ...
void write_bmp_header(j_decompress_ptr cinfo, FILE *output_file) { //cinfo已经转换为小端模式了 char bmpfileheader[14]; char bmpinfoheader[40]; long headersize, bfSize; int bits_per_pixel, cmap_entries; int step; /* Compute colormap size and total file size */ ...