nothing

bmp.c

@@ -5,15 +5,19 @@
 #include <malloc.h>
 
 #include "sal_debug.h"
+#include "sal_util.h"
+#include "bmp.h"
 
-#if 0
+#if 1
 void CreateRGBData(unsigned char *rgbout,int width,int height)
 {
     unsigned long  idx=0;
-    for(int j=0;j<height;j++) 
+    int j = 0;
+    int i = 0;
+    for(j=0;j<height;j++) 
     {
         idx=(height-j-1)*width*3;//该值保证所生成的rgb数据逆序存放在rgbbuf中
-        for(int i=0;i<width;i++)
+        for(i=0;i<width;i++)
         {           
             unsigned char r,g,b;
             //生成一个包含红，蓝，绿，黄四种颜色的条纹图案吧
@@ -48,10 +52,13 @@ void CreateRGBData(unsigned char *rgbout,int width,int height)
     }
 }
 
-void MySaveBmp(string  filename,unsigned char *rgbbuf,int width,int height)
+int bmp_create(unsigned char* bgrbuf,int width,int height, unsigned char** outbuffer, unsigned int* outsize)
 {
     MyBITMAPFILEHEADER bfh;
+    memset(&bfh, 0, sizeof(bfh));
     MyBITMAPINFOHEADER bih;
+    memset(&bih, 0, sizeof(bih));
+
     /* Magic number for file. It does not fit in the header structure due to alignment requirements, so put it outside */
     unsigned short bfType=0x4d42;           
     bfh.bfReserved1 = 0;
@@ -70,31 +77,42 @@ void MySaveBmp(string  filename,unsigned char *rgbbuf,int width,int height)
     bih.biYPelsPerMeter =0;
     bih.biClrUsed = 0;
     bih.biClrImportant = 0;
+
+    unsigned int size = sizeof(bfType) + sizeof(bfh) + sizeof(bih) + width*height*3;
+    unsigned char* bmp_buffer = (unsigned char*)malloc(size);
+    CHECK(bmp_buffer, -1, "malloc %d bytes failed.\n", size);
+    memset(bmp_buffer, 0, size);
+
+    int offset = 0;
+    memcpy(bmp_buffer+offset, &bfType, sizeof(bfType));
+    offset += sizeof(bfType);
+    memcpy(bmp_buffer+offset, &bfh, sizeof(bfh));
+    offset += sizeof(bfh);
+    memcpy(bmp_buffer+offset, &bih, sizeof(bih));
+    offset += sizeof(bih);
 
-    FILE *file=NULL;
-    fopen_s(&file,"c:\\MyTest.bmp", "wb");
-    if (!file)
-    {
-        printf("Could not write file\n");
-        return;
-    }
-
-    fwrite(&bfType,sizeof(bfType),1,file);
-    fwrite(&bfh, sizeof(bfh),1 , file);
-    fwrite(&bih, sizeof(bih),1 , file);
-
-    fwrite(rgbbuf,width*height*3,1,file);
-    fclose(file);
+    memcpy(bmp_buffer+offset, bgrbuf, width*height*3);
+    offset += width*height*3;
+
+    *outbuffer = bmp_buffer;
+    *outsize = size;
+
+    return 0;
 }
 
-int main()
+int bmp_demo()
 {
     unsigned char* rgbbuffer;
     rgbbuffer=(unsigned char*)malloc(400*400*3);
     memset(rgbbuffer,0,400*400*3);
     CreateRGBData(rgbbuffer,400,400);
-    MySaveBmp("C;\\MyTest.bmp",rgbbuffer,400,400);
+
+    unsigned char* bmp = NULL;
+    int size = 0;
+    bmp_create(rgbbuffer,400,400, &bmp, &size);
+    util_file_write("test.bmp", bmp, size);
     free(rgbbuffer);
+    free(bmp);
     return 0;
 }
 

bmp.h

@@ -7,33 +7,39 @@ extern "C"{
 #endif
 #endif
 
-#include<iostream>
-    using namespace std;
-
-    typedef struct                       /**** BMP file header structure ****/
-        {
-        unsigned int   bfSize;           /* Size of file */
-        unsigned short bfReserved1;      /* Reserved */
-        unsigned short bfReserved2;      /* ... */
-        unsigned int   bfOffBits;        /* Offset to bitmap data */
-        } MyBITMAPFILEHEADER;
-
-    typedef struct                       /**** BMP file info structure ****/
-        {
-        unsigned int   biSize;           /* Size of info header */
-        int            biWidth;          /* Width of image */
-        int            biHeight;         /* Height of image */
-        unsigned short biPlanes;         /* Number of color planes */
-        unsigned short biBitCount;       /* Number of bits per pixel */
-        unsigned int   biCompression;    /* Type of compression to use */
-        unsigned int   biSizeImage;      /* Size of image data */
-        int            biXPelsPerMeter;  /* X pixels per meter */
-        int            biYPelsPerMeter;  /* Y pixels per meter */
-        unsigned int   biClrUsed;        /* Number of colors used */
-        unsigned int   biClrImportant;   /* Number of important colors */
-        } MyBITMAPINFOHEADER;
-
-
+
+typedef struct                       /**** BMP file header structure ****/
+{
+    unsigned int   bfSize;           /* Size of file */
+    unsigned short bfReserved1;      /* Reserved */
+    unsigned short bfReserved2;      /* ... */
+    unsigned int   bfOffBits;        /* Offset to bitmap data */
+} MyBITMAPFILEHEADER;
+
+typedef struct                       /**** BMP file info structure ****/
+{
+    unsigned int   biSize;           /* Size of info header */
+    int            biWidth;          /* Width of image */
+    int            biHeight;         /* Height of image */
+    unsigned short biPlanes;         /* Number of color planes */
+    unsigned short biBitCount;       /* Number of bits per pixel */
+    unsigned int   biCompression;    /* Type of compression to use */
+    unsigned int   biSizeImage;      /* Size of image data */
+    int            biXPelsPerMeter;  /* X pixels per meter */
+    int            biYPelsPerMeter;  /* Y pixels per meter */
+    unsigned int   biClrUsed;        /* Number of colors used */
+    unsigned int   biClrImportant;   /* Number of important colors */
+}MyBITMAPINFOHEADER;
+
+typedef struct tagRGBQUAD
+{  
+    unsigned char rgbBlue;//蓝色的亮度（值范围为0-255)  
+    unsigned char rgbGreen;//绿色的亮度（值范围为0-255)  
+    unsigned char rgbRed;//红色的亮度（值范围为0-255)  
+    unsigned char rgbReserved;//保留，必须为0  
+}RGBQUAD;
+
+
 
 
 #ifdef __cplusplus