image_p image_load_jpg_buf(const char* mbuf,int bsize, int displaymode)
{
image_p pimage = NULL;
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
uint8 *rawdata,*scanline, *p,*data = NULL;
int rawsize,texw,texh,width,height,bpb=2,size;
int r,g,b,x;
uint32* p32;
uint16* p16;
uint16 color16;
uint32 color32;
if(mbuf == NULL||bsize==0)
return 0;
memset(&cinfo,0,sizeof(struct jpeg_decompress_struct));
memset(&jerr,0,sizeof(struct jpeg_error_mgr));
rawsize = bsize;
rawdata = (uint8*)mbuf;
if (rawdata[6] != 'J' || rawdata[7] != 'F' || rawdata[8] != 'I' || rawdata[9] != 'F')
{
return 0;
}
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_decompress(&cinfo);
jpeg_mem_src(&cinfo, rawdata, rawsize);
jpeg_read_header(&cinfo, 1);
jpeg_start_decompress(&cinfo);
if(cinfo.output_components != 3 && cinfo.output_components != 4)
{
jpeg_destroy_decompress(&cinfo);
return 0;
}
texw = roundpower2(cinfo.output_width);
texh = roundpower2(cinfo.output_height);
width = cinfo.output_width;
height = cinfo.output_height;
if(displaymode == DISPLAY_PIXEL_FORMAT_8888){
bpb = 4;
}
size = texw * texh * bpb;
data = (uint8*)malloc(size);
memset(data,0,size);
scanline = (uint8*)malloc(cinfo.output_width * 3);
if(!scanline){
jpeg_destroy_decompress(&cinfo);
SAFE_FREE (data);
return 0;
}
p32 = (uint32*)data;
p16 = (uint16*) p32;
while(cinfo.output_scanline < cinfo.output_height){
jpeg_read_scanlines(&cinfo, &scanline, 1);
p = (uint8*)scanline;
for(x=0; x<(int)cinfo.output_width; x++){
r = p[0];
g = p[1];
b = p[2];
switch (displaymode){
case DISPLAY_PIXEL_FORMAT_565:
color16 = MAKE_RGBA_565(r,g,b,0xff);
*(p16+x) = color16;
break;
case DISPLAY_PIXEL_FORMAT_5551:
color16 = MAKE_RGBA_5551(r,g,b,0xff);
*(p16+x) = color16;
break;
case DISPLAY_PIXEL_FORMAT_4444:
color16 = MAKE_RGBA_4444(r,g,b,0xff);
*(p16+x) = color16;
break;
case DISPLAY_PIXEL_FORMAT_8888:
color32 = MAKE_RGBA_8888(r,g,b,0xff);
*(p32+x) = color32;
break;
}
p+=3;
}
p32 += texw;
p16 += texw;
}
SAFE_FREE(scanline);
jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
pimage = (image_p)malloc(sizeof(image_t));
memset(pimage,0,sizeof(image_t));
pimage->data = (uint8 *)data;
pimage->w = width;
pimage->h = height;
pimage->texw = texw;
pimage->texh = texh;
pimage->bpb = bpb;
pimage->dtype = displaymode;
pimage->rcentrex = pimage->w*1.0f/2;
pimage->rcentrey = pimage->h*1.0f/2;
pimage->mode = GET_PSM_COLOR_MODE(displaymode);
pimage->mask = CreateColor(255,255,255,255,displaymode);
pimage->texid = image_tid++;
return pimage;
}
image_p image_load_bmp_buf(const char* mbuf,int bsize, int displaymode)
{
image_p pimage = NULL;
uint8_t *pdata,*data,*line;
int dsize,w,h,texw,texh,bpb,size,x,y,done = 0;
uint32_t* p32;
uint16_t* p16;
uint16_t color16;
uint32_t color32;
PBITMAPFILEHEADER pbfh = (PBITMAPFILEHEADER)mbuf;
PBITMAPINFOHEADER pbih;
if(pbfh->bfType !=0x4d42){
nge_print("not bmp file\n");
return 0;
}
pbih = (PBITMAPINFOHEADER)(mbuf+sizeof(BITMAPFILEHEADER));
dsize = sizeof(BITMAPFILEHEADER)+pbih->biSize;
pdata = (uint8_t*)mbuf+dsize;
w = pbih->biWidth;
h = pbih->biHeight;
texw = roundpower2(w);
texh = roundpower2(h);
bpb = 4;
if(displaymode != DISPLAY_PIXEL_FORMAT_8888){
bpb = 2;
}
//int biSizeImage = ((((pbih->biWidth * pbih->biBitCount) + 31) & ~31) / 8) * pbih->biHeight;
size = texw * texh * bpb;
data = (uint8_t*)malloc(size);
memset(data,0,size);
p32 = (uint32_t*)data;
p16 = (uint16_t*) p32;
line = NULL;
if(pbih->biBitCount == 24){
for (y = h;y>0;y--){
line = pdata+(y-1)*w*3;
for (x=0;x<w;x++){
switch(displaymode)
{
case DISPLAY_PIXEL_FORMAT_8888:
color32 = MAKE_RGBA_8888(line[2],line[1],line[0],0xff);
*(p32+x) = color32;
break;
case DISPLAY_PIXEL_FORMAT_565:
color16 = MAKE_RGBA_565(line[2],line[1],line[0],0xff);
*(p16+x) = color16;
break;
case DISPLAY_PIXEL_FORMAT_5551:
color16 = MAKE_RGBA_5551(line[2],line[1],line[0],0xff);
*(p16+x) = color16;
break;
case DISPLAY_PIXEL_FORMAT_4444:
color16 = MAKE_RGBA_4444(line[2],line[1],line[0],0xff);
*(p16+x) = color16;
break;
}
line+=3;
}
p32 += texw;
p16 += texw;
}
done = 1;
}
else if(pbih->biBitCount == 32){
for (y = h;y>0;y--){
line = pdata+(y-1)*w*4;
for (x=0;x<w;x++){
switch(displaymode)
{
case DISPLAY_PIXEL_FORMAT_8888:
color32 = MAKE_RGBA_8888(line[2],line[1],line[0],0xff);
*(p32+x) = color32;
break;
case DISPLAY_PIXEL_FORMAT_565:
color16 = MAKE_RGBA_565(line[2],line[1],line[0],0xff);
*(p16+x) = color16;
break;
case DISPLAY_PIXEL_FORMAT_5551:
color16 = MAKE_RGBA_5551(line[2],line[1],line[0],0xff);
*(p16+x) = color16;
break;
case DISPLAY_PIXEL_FORMAT_4444:
color16 = MAKE_RGBA_4444(line[2],line[1],line[0],0xff);
*(p16+x) = color16;
break;
}
line+=4;
}
p32 += texw;
p16 += texw;
}
done = 1;
}
if (done){
pimage = (image_p)malloc(sizeof(image_t));
memset(pimage,0,sizeof(image_t));
pimage->data = (uint8_t *)data;
pimage->w = w;
pimage->h = h;
pimage->texw = texw;
pimage->texh = texh;
pimage->bpb = bpb;
pimage->dtype = displaymode;
pimage->rcentrex = pimage->w*1.0f/2;
pimage->rcentrey = pimage->h*1.0f/2;
pimage->mode = GET_PSM_COLOR_MODE(displaymode);
pimage->mask = CreateColor(255,255,255,255,displaymode);
pimage->texid = image_tid++;
}
return pimage;
}
