之前用点陈字库做过3515,3520a的字库,现在为新需求,要用矢量字库做osd。决定用SDL_tff库做。
配置freetype:
xy@xy-pc:~/aaa/freetype-2.4.10$ CC=arm-hisiv200-linux-gcc ./configure --prefix=/home/xy/aaa/bin --host=arm-linux编译安装:make ,make install。
配置SDL:
xy@xy-pc:~/aaa/SDL-1.2.15$ CC=arm-hisiv200-linux-gcc CXX=arm-hisiv200-linux-cpp ./configure --prefix=/home/xy/aaa/bin --host=arm-linux --disable-alsa --disable-pulseaudio
编译安装。
配置SDL_tff:
xy@xy-pc:~/aaa/SDL_ttf-2.0.11$CC=arm-hisiv200-linux-gcc ./configure --with-freetype-prefix=/home/xy/aaa/bin --host=arm-linux
编译安装.
/*
* main.c
*
* Created on: 2013-1-22
* Author: xy
*/
#include
#include
#include "SDL/SDL.h"
#include "SDL/SDL_ttf.h"
int main(int argc,char **argv)
{
TTF_Font *font;
SDL_Surface *text, *temp;
/* Initialize the TTF library */
if ( TTF_Init() < 0 ) {
fprintf(stderr, "Couldn't initialize TTF: %s\n",SDL_GetError());
SDL_Quit();
return(2);
}
font = TTF_OpenFont("cu.ttf", 48);
if ( font == NULL ) {
fprintf(stderr, "Couldn't load %d pt font from %s: %s\n",
"ptsize", 18, SDL_GetError());
}
// TTF_SetFontStyle(font, 0);
// TTF_SetFontOutline(font, 0);
// TTF_SetFontKerning(font, 1);
// TTF_SetFontHinting(font, 0);
//SDL_Color forecol= { 0xFF, 0xFF, 0xFF, 0 };
SDL_Color forecol= { 0x00, 0x00, 0x00, 0 };
char *string="你好啊";
text = TTF_RenderUTF8_Solid(font, string, forecol);
//SDL_LoadBMP
SDL_SaveBMP(text, "1.bmp");
SDL_FreeSurface(text);
TTF_CloseFont(font);
TTF_Quit();
}
对于海思3520a用的是rgb1555格式,所以应该转成那种格式:
/* Convert to 16 bits per pixel */
SDL_Surface *temp = SDL_CreateRGBSurface(SDL_SWSURFACE,
text->w, text->h, 16,\
0x00FF0000, 0x0000FF00, 0x000000FF,/*0x00FF0000, 0x0000FF00, 0x000000FF*/
0);
SDL_Rect bounds;
if (temp != NULL)
{
bounds.x = 0;
bounds.y = 0;
bounds.w = text->w;
bounds.h = text->h;
if (SDL_LowerBlit(text, &bounds, temp, &bounds) < 0) {
SDL_FreeSurface(text);
SDL_SetError("Couldn't convert image to 16 bpp");
text = NULL;
}
}
stBitmap.u32Width = temp->w;
stBitmap.u32Height = temp->h;
stBitmap.pData= temp->pixels;
stBitmap.enPixelFormat= PIXEL_FORMAT_RGB_1555 ;
SDL_FreeSurface(text);
SDL_FreeSurface(temp);
因为自己的不细心,调试了大半天。真是不应该啊。其实早知道这样做,但是思维上总是背道而驰。
以后编程应该更细心,至少节省时间啊。。。。