image_p image_scale(image_p src, int w, int h,int mode)
{
image_p dst;
uint8 * temp;
uint8 recover = 0;
uint32 spitch, dpitch;
filter_base* filter = create_filter(mode);
dst = image_create(w,h,src->dtype);
dst->dontswizzle = 1;
if(src->swizzle ==1){
unswizzle_swap(src);
recover = 1;
}
temp = malloc(dst->w*src->h*src->bpb);
memset(temp,0,dst->w*src->h*src->bpb);
spitch = src->texw;
dpitch = dst->texw;
horiz_scale(filter,src->data,src->w,src->h,temp,dst->w,src->h,spitch,src->dtype);
vert_scale (filter,temp,dst->w,src->h,dst->data,dst->w,dst->h,dpitch,src->dtype);
free(temp);
destroy_filter(filter);
if(recover)
swizzle_swap(src);
return dst;
}
/**
* 建立 src 图像的亮度，饱和度版本
*
* @param src 源图像
* @param saturation 饱合度 -100(灰度图像) 至 100(高彩色比图像)
* @param brightness 亮度 -100(全黑) 至 100(全白)
*/
image_p create_saturation_brightness_image(image_p src, int saturation, int brightness)
{
uint32 y,x;
uint8 recover = 0;
image_p pimg;
uint16 *p16,*psrc16;
uint32 *p32,*psrc32;
if(saturation<-100 || saturation>100)
{
nge_print("create_gray_image arg 'saturation' must between -100 to 100!");
return NULL;
}
if(brightness<-100 || brightness>100)
{
nge_print("create_gray_image arg 'brightness' must between -100 to 100!");
return NULL;
}
if(src->swizzle ==1){
unswizzle_swap(src);
recover = 1;
}
pimg = image_create(src->w, src->h, src->dtype);
for(y=0;y<src->h;y++)
{
if(src->dtype == DISPLAY_PIXEL_FORMAT_8888)
{
p32 = (uint32 *)pimg->data + y*src->texw;
psrc32 = (uint32 *)src->data + y*src->texw;
}
else
{
p16 = (uint16 *)pimg->data + y*src->texw;
psrc16 = (uint16 *)src->data + y*src->texw;
}
for(x=0;x<src->w;x++)
{
if(src->dtype == DISPLAY_PIXEL_FORMAT_8888)
{
*(p32 + x) = (uint32)get_saturation_brightness_color(pimg->dtype, *(psrc32 + x), saturation, brightness);
}
else
{
*(p16 + x) = (uint16)get_saturation_brightness_color(pimg->dtype, *(psrc16 + x), saturation, brightness);
}
}
}
if(recover)
swizzle_swap(src);
return pimg;
}
/**
* 建立 src 图像的灰度版本
*
* @param src 源图像
* @param gray 灰度 0 到 100, 0 为源图像, 100 为纯灰色图像
*/
image_p create_gray_image(image_p src, int gray)
{
uint32 y,x;
uint8 recover = 0;
image_p pimg;
uint16 *p16,*psrc16;
uint32 *p32,*psrc32;
if(gray<0 || gray>100)
{
nge_print("create_gray_image arg 'gray' must between 0 to 100！");
return NULL;
}
if(src->swizzle ==1){
unswizzle_swap(src);
recover = 1;
}
pimg = image_create(src->w, src->h, src->dtype);
for(y=0;y<src->h;y++)
{
if(src->dtype == DISPLAY_PIXEL_FORMAT_8888)
{
p32 = (uint32 *)pimg->data + y*src->texw;
psrc32 = (uint32 *)src->data + y*src->texw;
}
else
{
p16 = (uint16 *)pimg->data + y*src->texw;
psrc16 = (uint16 *)src->data + y*src->texw;
}
for(x=0;x<src->w;x++)
{
if(src->dtype == DISPLAY_PIXEL_FORMAT_8888)
{
*(p32 + x) = (uint32)get_gray_color(pimg->dtype, *(psrc32 + x), gray);
}
else
{
*(p16 + x) = (uint16)get_gray_color(pimg->dtype, *(psrc16 + x), gray);
}
}
}
if(recover)
swizzle_swap(src);
return pimg;
}
static void freetype2_drawtext(PFont pfont, image_p pimage, int x, int y,
const void *text, int cc, int flags)
{
PFontFreetype pf = (PFontFreetype) pfont;
uint16_t* value;
FT_Glyph glyph;
int pen_x = x;
int pen_y = y + pf->size;
int i;
FT_BitmapGlyph bitmap_glyph;
FT_Bitmap* bitmap;
value = _nge_ft_conv_encoding(pfont, text, &cc);
if (cc <= 0)
return;
if(pimage->swizzle ==1){
unswizzle_swap(pimage);
pimage->dontswizzle = 1;
}
pimage->modified =1;
for (i =0;i<cc;i++) {
FT_Load_Glyph( pf->face, FT_Get_Char_Index( pf->face, value[i] ), FT_LOAD_DEFAULT );
if(pf->flags & FLAGS_FREETYPE_BOLD)
FT_GlyphSlot_Embolden(pf->face->glyph);
if(pf->flags & FLAGS_FREETYPE_ITALICS)
FT_GlyphSlot_Oblique(pf->face->glyph);
FT_Get_Glyph( pf->face->glyph, &glyph );
FT_Render_Glyph( pf->face->glyph, ft_render_mode_normal );
FT_Glyph_To_Bitmap( &glyph, ft_render_mode_normal, 0, 1 );
bitmap_glyph = (FT_BitmapGlyph)glyph;
bitmap=&bitmap_glyph->bitmap;
draw_one_word(pf,bitmap,pimage,pen_x + pf->face->glyph->bitmap_left,pen_y - pf->face->glyph->bitmap_top );
pen_x +=(pf->face->glyph->advance.x+pf->fix_width*72) >> 6 ;
FT_Done_Glyph( glyph );
}
}
image_p create_contrast_image(image_p src, int contrast){
uint32 y,x;
uint8 recover = 0;
image_p pimg;
uint16 *p16,*psrc16;
uint32 *p32,*psrc32;
sint16 r,g,b,a;
sint32 col;
uint8 colmap[255];
if(contrast<-100 || contrast>100)
{
nge_print("create_contrast_image arg 'contrast' must between -100 to 100!");
return NULL;
}
contrast+=100;
if(contrast == 100)
return image_clone(src);
if(src->swizzle ==1){
unswizzle_swap(src);
recover = 1;
}
for(x=0;x<256;x++){
if(contrast < 100){
colmap[x] = max(0, min((int)(x - 128) * (contrast / 100) + 128, 255));
}
else{
colmap[x] = max(0, min((int)(x - 128) * ((contrast - 100) * 1.28) + 128, 255));
}
}
pimg = image_create(src->w, src->h, src->dtype);
for(y=0;y<src->h;y++)
{
for(x=0;x<src->w;x++){
if(src->dtype == DISPLAY_PIXEL_FORMAT_8888)
{
p32 = (uint32 *)pimg->data + y*src->texw;
psrc32 = (uint32 *)src->data + y*src->texw;
}
else
{
p16 = (uint16 *)pimg->data + y*src->texw;
psrc16 = (uint16 *)src->data + y*src->texw;
}
if(src->dtype == DISPLAY_PIXEL_FORMAT_4444){
col = *(psrc16 + x);
GET_RGBA_4444(col, r,g,b,a);
if(a > 0)
{
r = colmap[r];
g = colmap[g];
b = colmap[b];
}
*(p16 + x) = MAKE_RGBA_4444(r,g,b,a);
}
}
}
if(recover)
swizzle_swap(src);
return pimg;
}
image_p image_conv(image_p src, int dtype)
{
image_p dst;
uint8 recover = 0;
uint32 i,j;
uint32 *src32, *dst32;
uint16 *src16, *dst16;
uint8 r,g,b,a;
if(src->dtype == dtype)
return image_clone(src);
if(src->swizzle ==1){
unswizzle_swap(src);
recover = 1;
}
dst = image_create(src->w, src->h, dtype);
src32 = (uint32*)src->data;
dst32 = (uint32*)dst->data;
src16 = (uint16*)src->data;
dst16 = (uint16*)dst->data;
for(i = 0; i < src->h; i++)
{
for (j = 0; j<src->w; j++)
{
if(dtype == DISPLAY_PIXEL_FORMAT_8888){
if(src->dtype == DISPLAY_PIXEL_FORMAT_4444){
GET_RGBA_4444(src16[i*src->texw+j],r,g,b,a);
dst32[i*dst->texw+j] = MAKE_RGBA_8888(r,g,b,a);
}
else if(src->dtype == DISPLAY_PIXEL_FORMAT_5551){
GET_RGBA_5551(src16[i*src->texw+j],r,g,b,a);
dst32[i*dst->texw+j] = MAKE_RGBA_8888(r,g,b,a);
}
else if(src->dtype == DISPLAY_PIXEL_FORMAT_565){
GET_RGBA_565(src16[i*src->texw+j],r,g,b,a);
dst32[i*dst->texw+j] = MAKE_RGBA_8888(r,g,b,a);
}
}
else if(dtype == DISPLAY_PIXEL_FORMAT_4444){
if(src->dtype == DISPLAY_PIXEL_FORMAT_8888){
GET_RGBA_8888(src32[i*src->texw+j],r,g,b,a);
dst16[i*dst->texw+j] = MAKE_RGBA_4444(r,g,b,a);
}
else if(src->dtype == DISPLAY_PIXEL_FORMAT_5551){
GET_RGBA_5551(src16[i*src->texw+j],r,g,b,a);
dst16[i*dst->texw+j] = MAKE_RGBA_4444(r,g,b,a);
}
else if(src->dtype == DISPLAY_PIXEL_FORMAT_565){
GET_RGBA_565(src16[i*src->texw+j],r,g,b,a);
dst16[i*dst->texw+j] = MAKE_RGBA_4444(r,g,b,a);
}
}
else if(dtype == DISPLAY_PIXEL_FORMAT_5551){
if(src->dtype == DISPLAY_PIXEL_FORMAT_8888){
GET_RGBA_8888(src32[i*src->texw+j],r,g,b,a);
dst16[i*dst->texw+j] = MAKE_RGBA_5551(r,g,b,a);
}
else if(src->dtype == DISPLAY_PIXEL_FORMAT_4444){
GET_RGBA_4444(src16[i*src->texw+j],r,g,b,a);
dst16[i*dst->texw+j] = MAKE_RGBA_5551(r,g,b,a);
}
else if(src->dtype == DISPLAY_PIXEL_FORMAT_565){
GET_RGBA_565(src16[i*src->texw+j],r,g,b,a);
dst16[i*dst->texw+j] = MAKE_RGBA_5551(r,g,b,a);
}
}
else if(dtype == DISPLAY_PIXEL_FORMAT_565){
if(src->dtype == DISPLAY_PIXEL_FORMAT_8888){
GET_RGBA_8888(src32[i*src->texh+j],r,g,b,a);
dst16[i*dst->texh+j] = MAKE_RGBA_565(r,g,b,a);
}
else if(src->dtype == DISPLAY_PIXEL_FORMAT_4444){
GET_RGBA_4444(src16[i*src->texh+j],r,g,b,a);
dst16[i*dst->texh+j] = MAKE_RGBA_565(r,g,b,a);
}
else if(src->dtype == DISPLAY_PIXEL_FORMAT_5551){
GET_RGBA_5551(src16[i*src->texh+j],r,g,b,a);
dst16[i*dst->texh+j] = MAKE_RGBA_565(r,g,b,a);
}
}
}
}
swizzle_swap(dst);
if(recover)
swizzle_swap(src);
return dst;
}
image_p image_rot(image_p src,float angel)
{
image_p dst;
uint8 recover = 0;
double sx,rs0,rs1,sy;
double rangel;
pointf d0,d1,d2,d3,d4;
float x1,x2,y1,y2;
sint16 xo, yo, wo, ho;
uint32 i,j;
uint32 *src32, *dst32;
uint16 *src16, *dst16;
uint16 r,g,b,a;
uint16 r2,g2,b2,a2;
uint8 smc;
float xbx;
while(angel > 360.0f)
angel-=360.0f;
while(angel<0)
angel+=360.0f;
if(angel == 0)
return image_clone(src);
if(src->swizzle ==1){
unswizzle_swap(src);
recover = 1;
}
rangel = angel*3.1415926f/180.0f;
sx = cos(rangel);
rs0 = sin(rangel);
rs1 = -sin(rangel);
sy = cos(rangel);
d0.x = 0;
d0.y = 0;
d1 = image_rot_pointf(d0, sx, sy, rs0, rs1);
d0.x = src->w;
d2 = image_rot_pointf(d0, sx, sy, rs0, rs1);
d0.y = src->h;
d3 = image_rot_pointf(d0, sx, sy, rs0, rs1);
d0.x = 0;
d4 = image_rot_pointf(d0, sx, sy, rs0, rs1);
x1 = min(d1.x, min(d2.x, min(d3.x, d4.x)));
x2 = max(d1.x, max(d2.x, max(d3.x, d4.x)));
y1 = min(d1.y, min(d2.y, min(d3.y, d4.y)));
y2 = max(d1.y, max(d2.y, max(d3.y, d4.y)));
xo = x1;
yo = y1;
wo = x2 - xo;
ho = y2 - yo;
dst = image_create(wo, ho, src->dtype);
src32 = (uint32*)src->data;
dst32 = (uint32*)dst->data;
src16 = (uint16*)src->data;
dst16 = (uint16*)dst->data;
for(i = 0; i < dst->h; i++)
{
for (j = 0; j<dst->w; j++)
{
d0.x = j;
d0.y = i;
d0 = image_rot_pointf(d0, sx, sy, rs0, rs1);
// easy way
smc = 1;
r2 = 0; g2 = 0; b2 = 0; a2 = 0;
if(src->dtype == DISPLAY_PIXEL_FORMAT_8888){
if((int)d0.y-yo < src->texh && (int)d0.x-xo < src->texw){
//dst16[i*dst->texw+j] = src16[((int)d0.y-yo)*src->texw+(int)d0.x-xo];
GET_RGBA_8888(src32[((int)d0.y-yo)*src->texw+(int)d0.x-xo], r, g, b, a);
xbx = 1.0f - ((d0.y-yo) - (int)(d0.y-yo));
r2 = r * xbx;
g2 = g * xbx;
b2 = b * xbx;
a2 = a * xbx;
if((int)d0.y-yo+1 < src->texh){
smc++;
xbx = 1.0f - xbx;
GET_RGBA_8888(src32[((int)d0.y-yo+1)*src->texw+(int)d0.x-xo], r, g, b, a);
r2 += r * xbx;
g2 += g * xbx;
b2 += b * xbx;
a2 += a * xbx;
}
r = min(r2, 255);
g = min(g2, 255);
b = min(b2, 255);
a = min(a2, 255);
dst32[i*dst->texw+j] = MAKE_RGBA_8888(r,g,b,a);
}
}
else if(src->dtype == DISPLAY_PIXEL_FORMAT_4444){
if((int)d0.y-yo < src->texh && (int)d0.x-xo < src->texw){
//dst16[i*dst->texw+j] = src16[((int)d0.y-yo)*src->texw+(int)d0.x-xo];
GET_RGBA_4444(src16[((int)d0.y-yo)*src->texw+(int)d0.x-xo], r, g, b, a);
xbx = 1.0f - ((d0.y-yo) - (int)(d0.y-yo));
r2 = r * xbx;
g2 = g * xbx;
b2 = b * xbx;
a2 = a * xbx;
if((int)d0.y-yo+1 < src->texh){
smc++;
xbx = 1.0f - xbx;
GET_RGBA_4444(src16[((int)d0.y-yo+1)*src->texw+(int)d0.x-xo], r, g, b, a);
r2 += r * xbx;
g2 += g * xbx;
b2 += b * xbx;
a2 += a * xbx;
}
r = min(r2, 255);
g = min(g2, 255);
b = min(b2, 255);
a = min(a2, 255);
dst16[i*dst->texw+j] = MAKE_RGBA_4444(r,g,b,a);
}
}
else if(src->dtype == DISPLAY_PIXEL_FORMAT_5551){
if((int)d0.y-yo < src->texh && (int)d0.x-xo < src->texw){
//dst16[i*dst->texw+j] = src16[((int)d0.y-yo)*src->texw+(int)d0.x-xo];
GET_RGBA_5551(src16[((int)d0.y-yo)*src->texw+(int)d0.x-xo], r, g, b, a);
xbx = 1.0f - ((d0.y-yo) - (int)(d0.y-yo));
r2 = r * xbx;
g2 = g * xbx;
b2 = b * xbx;
a2 = a * xbx;
if((int)d0.y-yo+1 < src->texh){
smc++;
xbx = 1.0f - xbx;
GET_RGBA_5551(src16[((int)d0.y-yo+1)*src->texw+(int)d0.x-xo], r, g, b, a);
r2 += r * xbx;
g2 += g * xbx;
b2 += b * xbx;
a2 += a * xbx;
}
r = min(r2, 255);
g = min(g2, 255);
b = min(b2, 255);
a = min(a2, 255);
dst16[i*dst->texw+j] = MAKE_RGBA_5551(r,g,b,a);
}
}
else{
if((int)d0.y-yo < src->texh && (int)d0.x-xo < src->texw){
//dst16[i*dst->texw+j] = src16[((int)d0.y-yo)*src->texw+(int)d0.x-xo];
GET_RGBA_565(src16[((int)d0.y-yo)*src->texw+(int)d0.x-xo], r, g, b, a);
xbx = 1.0f - ((d0.y-yo) - (int)(d0.y-yo));
r2 = r * xbx;
g2 = g * xbx;
b2 = b * xbx;
a2 = a * xbx;
if((int)d0.y-yo+1 < src->texh){
smc++;
xbx = 1.0f - xbx;
GET_RGBA_565(src16[((int)d0.y-yo+1)*src->texw+(int)d0.x-xo], r, g, b, a);
r2 += r * xbx;
g2 += g * xbx;
b2 += b * xbx;
a2 += a * xbx;
}
r = min(r2, 255);
g = min(g2, 255);
b = min(b2, 255);
a = min(a2, 255);
dst16[i*dst->texw+j] = MAKE_RGBA_565(r,g,b,a);
}
}
}
}
swizzle_swap(dst);
if(recover)
swizzle_swap(src);
return dst;
}
